diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2018-03-07 21:21:59 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2018-03-09 23:19:58 +0100 |
| commit | fd8773f9f544955f6f47dc2ac3ab85ad64376b7f (patch) | |
| tree | 2eedaf10b5a4b62df0d3b514cec9614a6af6b563 /arch/frv/kernel | |
| parent | 739d875dd6982618020d30f58f8acf10f6076e6d (diff) | |
arch: remove frv port
The Fujitsu FRV kernel port has been around for a long time, but has not
seen regular updates in several years and instead was marked 'Orphaned'
in 2016 by long-time maintainer David Howells.
The SoC product line apparently is apparently still around in the form
of the Socionext Milbeaut image processor, but this one no longer uses
the FRV CPU cores.
This removes all FRV specific files from the kernel.
Link: http://www.socionext.com/en/products/assp/milbeaut/
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/frv/kernel')
41 files changed, 0 insertions, 13795 deletions
diff --git a/arch/frv/kernel/.gitignore b/arch/frv/kernel/.gitignore deleted file mode 100644 index c5f676c3c224..000000000000 --- a/arch/frv/kernel/.gitignore +++ /dev/null @@ -1 +0,0 @@ -vmlinux.lds diff --git a/arch/frv/kernel/Makefile b/arch/frv/kernel/Makefile deleted file mode 100644 index 216ddf30c3c1..000000000000 --- a/arch/frv/kernel/Makefile +++ /dev/null @@ -1,24 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# -# Makefile for the linux kernel. -# - -heads-y := head-uc-fr401.o head-uc-fr451.o head-uc-fr555.o -heads-$(CONFIG_MMU) := head-mmu-fr451.o - -extra-y:= head.o vmlinux.lds - -obj-y := $(heads-y) entry.o entry-table.o break.o switch_to.o \ - process.o traps.o ptrace.o signal.o dma.o \ - sys_frv.o time.o setup.o frv_ksyms.o \ - debug-stub.o irq.o sleep.o uaccess.o - -obj-$(CONFIG_GDBSTUB) += gdb-stub.o gdb-io.o - -obj-$(CONFIG_MB93091_VDK) += irq-mb93091.o -obj-$(CONFIG_PM) += pm.o cmode.o -obj-$(CONFIG_MB93093_PDK) += pm-mb93093.o -obj-$(CONFIG_FUJITSU_MB93493) += irq-mb93493.o -obj-$(CONFIG_SYSCTL) += sysctl.o -obj-$(CONFIG_FUTEX) += futex.o -obj-$(CONFIG_MODULES) += module.o diff --git a/arch/frv/kernel/asm-offsets.c b/arch/frv/kernel/asm-offsets.c deleted file mode 100644 index 0a468e9b51ad..000000000000 --- a/arch/frv/kernel/asm-offsets.c +++ /dev/null @@ -1,96 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Generate definitions needed by assembly language modules. - * This code generates raw asm output which is post-processed - * to extract and format the required data. - */ - -#include <linux/sched.h> -#include <linux/signal.h> -#include <linux/personality.h> -#include <linux/kbuild.h> -#include <asm/registers.h> -#include <asm/ucontext.h> -#include <asm/processor.h> -#include <asm/thread_info.h> -#include <asm/gdb-stub.h> - -#define DEF_PTREG(sym, reg) OFFSET(sym, pt_regs, reg) -#define DEF_IREG(sym, reg) OFFSET(sym, user_context, reg) -#define DEF_FREG(sym, reg) OFFSET(sym, user_context, reg) -#define DEF_0REG(sym, reg) OFFSET(sym, frv_frame0, reg) - -void foo(void) -{ - /* offsets into the thread_info structure */ - OFFSET(TI_TASK, thread_info, task); - OFFSET(TI_FLAGS, thread_info, flags); - OFFSET(TI_STATUS, thread_info, status); - OFFSET(TI_CPU, thread_info, cpu); - OFFSET(TI_PREEMPT_COUNT, thread_info, preempt_count); - OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit); - BLANK(); - - /* offsets into register file storage */ - DEF_PTREG(REG_PSR, psr); - DEF_PTREG(REG_ISR, isr); - DEF_PTREG(REG_CCR, ccr); - DEF_PTREG(REG_CCCR, cccr); - DEF_PTREG(REG_LR, lr); - DEF_PTREG(REG_LCR, lcr); - DEF_PTREG(REG_PC, pc); - DEF_PTREG(REG__STATUS, __status); - DEF_PTREG(REG_SYSCALLNO, syscallno); - DEF_PTREG(REG_ORIG_GR8, orig_gr8); - DEF_PTREG(REG_GNER0, gner0); - DEF_PTREG(REG_GNER1, gner1); - DEF_PTREG(REG_IACC0, iacc0); - DEF_PTREG(REG_TBR, tbr); - DEF_PTREG(REG_GR0, tbr); - DEFINE(REG__END, sizeof(struct pt_regs)); - BLANK(); - - DEF_0REG(REG_DCR, debug.dcr); - DEF_0REG(REG_IBAR0, debug.ibar[0]); - DEF_0REG(REG_DBAR0, debug.dbar[0]); - DEF_0REG(REG_DBDR00, debug.dbdr[0][0]); - DEF_0REG(REG_DBMR00, debug.dbmr[0][0]); - BLANK(); - - DEF_IREG(__INT_GR0, i.gr[0]); - DEF_FREG(__USER_FPMEDIA, f); - DEF_FREG(__FPMEDIA_FR0, f.fr[0]); - DEF_FREG(__FPMEDIA_FNER0, f.fner[0]); - DEF_FREG(__FPMEDIA_MSR0, f.msr[0]); - DEF_FREG(__FPMEDIA_ACC0, f.acc[0]); - DEF_FREG(__FPMEDIA_ACCG0, f.accg[0]); - DEF_FREG(__FPMEDIA_FSR0, f.fsr[0]); - BLANK(); - - DEFINE(NR_PT_REGS, sizeof(struct pt_regs) / 4); - DEFINE(NR_USER_INT_REGS, sizeof(struct user_int_regs) / 4); - DEFINE(NR_USER_FPMEDIA_REGS, sizeof(struct user_fpmedia_regs) / 4); - DEFINE(NR_USER_CONTEXT, sizeof(struct user_context) / 4); - DEFINE(FRV_FRAME0_SIZE, sizeof(struct frv_frame0)); - BLANK(); - - /* offsets into thread_struct */ - OFFSET(__THREAD_FRAME, thread_struct, frame); - OFFSET(__THREAD_CURR, thread_struct, curr); - OFFSET(__THREAD_SP, thread_struct, sp); - OFFSET(__THREAD_FP, thread_struct, fp); - OFFSET(__THREAD_LR, thread_struct, lr); - OFFSET(__THREAD_PC, thread_struct, pc); - OFFSET(__THREAD_GR16, thread_struct, gr[0]); - OFFSET(__THREAD_SCHED_LR, thread_struct, sched_lr); - OFFSET(__THREAD_FRAME0, thread_struct, frame0); - OFFSET(__THREAD_USER, thread_struct, user); - BLANK(); - - /* offsets into frv_debug_status */ - OFFSET(DEBUG_BPSR, frv_debug_status, bpsr); - OFFSET(DEBUG_DCR, frv_debug_status, dcr); - OFFSET(DEBUG_BRR, frv_debug_status, brr); - OFFSET(DEBUG_NMAR, frv_debug_status, nmar); - BLANK(); -} diff --git a/arch/frv/kernel/break.S b/arch/frv/kernel/break.S deleted file mode 100644 index cbb6958a3147..000000000000 --- a/arch/frv/kernel/break.S +++ /dev/null @@ -1,792 +0,0 @@ -/* break.S: Break interrupt handling (kept separate from entry.S) - * - * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/linkage.h> -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/ptrace.h> -#include <asm/thread_info.h> -#include <asm/spr-regs.h> - -#include <asm/errno.h> - -# -# the break handler has its own stack -# - .section .bss..stack - .globl __break_user_context - .balign THREAD_SIZE -__break_stack: - .space THREAD_SIZE - FRV_FRAME0_SIZE -__break_frame_0: - .space FRV_FRAME0_SIZE - -# -# miscellaneous variables -# - .section .bss -#ifdef CONFIG_MMU - .globl __break_tlb_miss_real_return_info -__break_tlb_miss_real_return_info: - .balign 8 - .space 2*4 /* saved PCSR, PSR for TLB-miss handler fixup */ -#endif - -__break_trace_through_exceptions: - .space 4 - -#define CS2_ECS1 0xe1200000 -#define CS2_USERLED 0x4 - -.macro LEDS val,reg -# sethi.p %hi(CS2_ECS1+CS2_USERLED),gr30 -# setlo %lo(CS2_ECS1+CS2_USERLED),gr30 -# setlos #~\val,\reg -# st \reg,@(gr30,gr0) -# setlos #0x5555,\reg -# sethi.p %hi(0xffc00100),gr30 -# setlo %lo(0xffc00100),gr30 -# sth \reg,@(gr30,gr0) -# membar -.endm - -############################################################################### -# -# entry point for Break Exceptions/Interrupts -# -############################################################################### - .section .text..break - .balign 4 - .globl __entry_break -__entry_break: -#ifdef CONFIG_MMU - movgs gr31,scr3 -#endif - LEDS 0x1001,gr31 - - sethi.p %hi(__break_frame_0),gr31 - setlo %lo(__break_frame_0),gr31 - - stdi gr2,@(gr31,#REG_GR(2)) - movsg ccr,gr3 - sti gr3,@(gr31,#REG_CCR) - - # catch the return from a TLB-miss handler that had single-step disabled - # traps will be enabled, so we have to do this now -#ifdef CONFIG_MMU - movsg bpcsr,gr3 - sethi.p %hi(__break_tlb_miss_return_breaks_here),gr2 - setlo %lo(__break_tlb_miss_return_breaks_here),gr2 - subcc gr2,gr3,gr0,icc0 - beq icc0,#2,__break_return_singlestep_tlbmiss -#endif - - # determine whether we have stepped through into an exception - # - we need to take special action to suspend h/w single stepping if we've done - # that, so that the gdbstub doesn't get bogged down endlessly stepping through - # external interrupt handling - movsg bpsr,gr3 - andicc gr3,#BPSR_BET,gr0,icc0 - bne icc0,#2,__break_maybe_userspace /* jump if PSR.ET was 1 */ - - LEDS 0x1003,gr2 - - movsg brr,gr3 - andicc gr3,#BRR_ST,gr0,icc0 - andicc.p gr3,#BRR_SB,gr0,icc1 - bne icc0,#2,__break_step /* jump if single-step caused break */ - beq icc1,#2,__break_continue /* jump if BREAK didn't cause break */ - - LEDS 0x1007,gr2 - - # handle special breaks - movsg bpcsr,gr3 - - sethi.p %hi(__entry_return_singlestep_breaks_here),gr2 - setlo %lo(__entry_return_singlestep_breaks_here),gr2 - subcc gr2,gr3,gr0,icc0 - beq icc0,#2,__break_return_singlestep - - bra __break_continue - - -############################################################################### -# -# handle BREAK instruction in kernel-mode exception epilogue -# -############################################################################### -__break_return_singlestep: - LEDS 0x100f,gr2 - - # special break insn requests single-stepping to be turned back on - # HERE RETT - # PSR.ET 0 0 - # PSR.PS old PSR.S ? - # PSR.S 1 1 - # BPSR.ET 0 1 (can't have caused orig excep otherwise) - # BPSR.BS 1 old PSR.S - movsg dcr,gr2 - sethi.p %hi(DCR_SE),gr3 - setlo %lo(DCR_SE),gr3 - or gr2,gr3,gr2 - movgs gr2,dcr - - movsg psr,gr2 - andi gr2,#PSR_PS,gr2 - slli gr2,#11,gr2 /* PSR.PS -> BPSR.BS */ - ori gr2,#BPSR_BET,gr2 /* 1 -> BPSR.BET */ - movgs gr2,bpsr - - # return to the invoker of the original kernel exception - movsg pcsr,gr2 - movgs gr2,bpcsr - - LEDS 0x101f,gr2 - - ldi @(gr31,#REG_CCR),gr3 - movgs gr3,ccr - lddi.p @(gr31,#REG_GR(2)),gr2 - xor gr31,gr31,gr31 - movgs gr0,brr -#ifdef CONFIG_MMU - movsg scr3,gr31 -#endif - rett #1 - -############################################################################### -# -# handle BREAK instruction in TLB-miss handler return path -# -############################################################################### -#ifdef CONFIG_MMU -__break_return_singlestep_tlbmiss: - LEDS 0x1100,gr2 - - sethi.p %hi(__break_tlb_miss_real_return_info),gr3 - setlo %lo(__break_tlb_miss_real_return_info),gr3 - lddi @(gr3,#0),gr2 - movgs gr2,pcsr - movgs gr3,psr - - bra __break_return_singlestep -#endif - - -############################################################################### -# -# handle single stepping into an exception prologue from kernel mode -# - we try and catch it whilst it is still in the main vector table -# - if we catch it there, we have to jump to the fixup handler -# - there is a fixup table that has a pointer for every 16b slot in the trap -# table -# -############################################################################### -__break_step: - LEDS 0x2003,gr2 - - # external interrupts seem to escape from the trap table before single - # step catches up with them - movsg bpcsr,gr2 - sethi.p %hi(__entry_kernel_external_interrupt),gr3 - setlo %lo(__entry_kernel_external_interrupt),gr3 - subcc.p gr2,gr3,gr0,icc0 - sethi %hi(__entry_uspace_external_interrupt),gr3 - setlo.p %lo(__entry_uspace_external_interrupt),gr3 - beq icc0,#2,__break_step_kernel_external_interrupt - subcc.p gr2,gr3,gr0,icc0 - sethi %hi(__entry_kernel_external_interrupt_virtually_disabled),gr3 - setlo.p %lo(__entry_kernel_external_interrupt_virtually_disabled),gr3 - beq icc0,#2,__break_step_uspace_external_interrupt - subcc.p gr2,gr3,gr0,icc0 - sethi %hi(__entry_kernel_external_interrupt_virtual_reenable),gr3 - setlo.p %lo(__entry_kernel_external_interrupt_virtual_reenable),gr3 - beq icc0,#2,__break_step_kernel_external_interrupt_virtually_disabled - subcc gr2,gr3,gr0,icc0 - beq icc0,#2,__break_step_kernel_external_interrupt_virtual_reenable - - LEDS 0x2007,gr2 - - # the two main vector tables are adjacent on one 8Kb slab - movsg bpcsr,gr2 - setlos #0xffffe000,gr3 - and gr2,gr3,gr2 - sethi.p %hi(__trap_tables),gr3 - setlo %lo(__trap_tables),gr3 - subcc gr2,gr3,gr0,icc0 - bne icc0,#2,__break_continue - - LEDS 0x200f,gr2 - - # skip workaround if so requested by GDB - sethi.p %hi(__break_trace_through_exceptions),gr3 - setlo %lo(__break_trace_through_exceptions),gr3 - ld @(gr3,gr0),gr3 - subcc gr3,gr0,gr0,icc0 - bne icc0,#0,__break_continue - - LEDS 0x201f,gr2 - - # access the fixup table - there's a 1:1 mapping between the slots in the trap tables and - # the slots in the trap fixup tables allowing us to simply divide the offset into the - # former by 4 to access the latter - sethi.p %hi(__trap_tables),gr3 - setlo %lo(__trap_tables),gr3 - movsg bpcsr,gr2 - sub gr2,gr3,gr2 - srli.p gr2,#2,gr2 - - sethi %hi(__trap_fixup_tables),gr3 - setlo.p %lo(__trap_fixup_tables),gr3 - andi gr2,#~3,gr2 - ld @(gr2,gr3),gr2 - jmpil @(gr2,#0) - -# step through an internal exception from kernel mode - .globl __break_step_kernel_softprog_interrupt -__break_step_kernel_softprog_interrupt: - sethi.p %hi(__entry_kernel_softprog_interrupt_reentry),gr3 - setlo %lo(__entry_kernel_softprog_interrupt_reentry),gr3 - bra __break_return_as_kernel_prologue - -# step through an external interrupt from kernel mode - .globl __break_step_kernel_external_interrupt -__break_step_kernel_external_interrupt: - # deal with virtual interrupt disablement - beq icc2,#0,__break_step_kernel_external_interrupt_virtually_disabled - - sethi.p %hi(__entry_kernel_external_interrupt_reentry),gr3 - setlo %lo(__entry_kernel_external_interrupt_reentry),gr3 - -__break_return_as_kernel_prologue: - LEDS 0x203f,gr2 - - movgs gr3,bpcsr - - # do the bit we had to skip -#ifdef CONFIG_MMU - movsg ear0,gr2 /* EAR0 can get clobbered by gdb-stub (ICI/ICEI) */ - movgs gr2,scr2 -#endif - - or.p sp,gr0,gr2 /* set up the stack pointer */ - subi sp,#REG__END,sp - sti.p gr2,@(sp,#REG_SP) - - setlos #REG__STATUS_STEP,gr2 - sti gr2,@(sp,#REG__STATUS) /* record single step status */ - - # cancel single-stepping mode - movsg dcr,gr2 - sethi.p %hi(~DCR_SE),gr3 - setlo %lo(~DCR_SE),gr3 - and gr2,gr3,gr2 - movgs gr2,dcr - - LEDS 0x207f,gr2 - - ldi @(gr31,#REG_CCR),gr3 - movgs gr3,ccr - lddi.p @(gr31,#REG_GR(2)),gr2 - xor gr31,gr31,gr31 - movgs gr0,brr -#ifdef CONFIG_MMU - movsg scr3,gr31 -#endif - rett #1 - -# we single-stepped into an interrupt handler whilst interrupts were merely virtually disabled -# need to really disable interrupts, set flag, fix up and return -__break_step_kernel_external_interrupt_virtually_disabled: - movsg psr,gr2 - andi gr2,#~PSR_PIL,gr2 - ori gr2,#PSR_PIL_14,gr2 /* debugging interrupts only */ - movgs gr2,psr - - ldi @(gr31,#REG_CCR),gr3 - movgs gr3,ccr - subcc.p gr0,gr0,gr0,icc2 /* leave Z set, clear C */ - - # exceptions must've been enabled and we must've been in supervisor mode - setlos BPSR_BET|BPSR_BS,gr3 - movgs gr3,bpsr - - # return to where the interrupt happened - movsg pcsr,gr2 - movgs gr2,bpcsr - - lddi.p @(gr31,#REG_GR(2)),gr2 - - xor gr31,gr31,gr31 - movgs gr0,brr -#ifdef CONFIG_MMU - movsg scr3,gr31 -#endif - rett #1 - -# we stepped through into the virtual interrupt reenablement trap -# -# we also want to single step anyway, but after fixing up so that we get an event on the -# instruction after the broken-into exception returns - .globl __break_step_kernel_external_interrupt_virtual_reenable -__break_step_kernel_external_interrupt_virtual_reenable: - movsg psr,gr2 - andi gr2,#~PSR_PIL,gr2 - movgs gr2,psr - - ldi @(gr31,#REG_CCR),gr3 - movgs gr3,ccr - subicc gr0,#1,gr0,icc2 /* clear Z, set C */ - - # save the adjusted ICC2 - movsg ccr,gr3 - sti gr3,@(gr31,#REG_CCR) - - # exceptions must've been enabled and we must've been in supervisor mode - setlos BPSR_BET|BPSR_BS,gr3 - movgs gr3,bpsr - - # return to where the trap happened - movsg pcsr,gr2 - movgs gr2,bpcsr - - # and then process the single step - bra __break_continue - -# step through an internal exception from uspace mode - .globl __break_step_uspace_softprog_interrupt -__break_step_uspace_softprog_interrupt: - sethi.p %hi(__entry_uspace_softprog_interrupt_reentry),gr3 - setlo %lo(__entry_uspace_softprog_interrupt_reentry),gr3 - bra __break_return_as_uspace_prologue - -# step through an external interrupt from kernel mode - .globl __break_step_uspace_external_interrupt -__break_step_uspace_external_interrupt: - sethi.p %hi(__entry_uspace_external_interrupt_reentry),gr3 - setlo %lo(__entry_uspace_external_interrupt_reentry),gr3 - -__break_return_as_uspace_prologue: - LEDS 0x20ff,gr2 - - movgs gr3,bpcsr - - # do the bit we had to skip - sethi.p %hi(__kernel_frame0_ptr),gr28 - setlo %lo(__kernel_frame0_ptr),gr28 - ldi.p @(gr28,#0),gr28 - - setlos #REG__STATUS_STEP,gr2 - sti gr2,@(gr28,#REG__STATUS) /* record single step status */ - - # cancel single-stepping mode - movsg dcr,gr2 - sethi.p %hi(~DCR_SE),gr3 - setlo %lo(~DCR_SE),gr3 - and gr2,gr3,gr2 - movgs gr2,dcr - - LEDS 0x20fe,gr2 - - ldi @(gr31,#REG_CCR),gr3 - movgs gr3,ccr - lddi.p @(gr31,#REG_GR(2)),gr2 - xor gr31,gr31,gr31 - movgs gr0,brr -#ifdef CONFIG_MMU - movsg scr3,gr31 -#endif - rett #1 - -#ifdef CONFIG_MMU -# step through an ITLB-miss handler from user mode - .globl __break_user_insn_tlb_miss -__break_user_insn_tlb_miss: - # we'll want to try the trap stub again - sethi.p %hi(__trap_user_insn_tlb_miss),gr2 - setlo %lo(__trap_user_insn_tlb_miss),gr2 - movgs gr2,bpcsr - -__break_tlb_miss_common: - LEDS 0x2101,gr2 - - # cancel single-stepping mode - movsg dcr,gr2 - sethi.p %hi(~DCR_SE),gr3 - setlo %lo(~DCR_SE),gr3 - and gr2,gr3,gr2 - movgs gr2,dcr - - # we'll swap the real return address for one with a BREAK insn so that we can re-enable - # single stepping on return - movsg pcsr,gr2 - sethi.p %hi(__break_tlb_miss_real_return_info),gr3 - setlo %lo(__break_tlb_miss_real_return_info),gr3 - sti gr2,@(gr3,#0) - - sethi.p %hi(__break_tlb_miss_return_break),gr2 - setlo %lo(__break_tlb_miss_return_break),gr2 - movgs gr2,pcsr - - # we also have to fudge PSR because the return BREAK is in kernel space and we want - # to get a BREAK fault not an access violation should the return be to userspace - movsg psr,gr2 - sti.p gr2,@(gr3,#4) - ori gr2,#PSR_PS,gr2 - movgs gr2,psr - - LEDS 0x2102,gr2 - - ldi @(gr31,#REG_CCR),gr3 - movgs gr3,ccr - lddi @(gr31,#REG_GR(2)),gr2 - movsg scr3,gr31 - movgs gr0,brr - rett #1 - -# step through a DTLB-miss handler from user mode - .globl __break_user_data_tlb_miss -__break_user_data_tlb_miss: - # we'll want to try the trap stub again - sethi.p %hi(__trap_user_data_tlb_miss),gr2 - setlo %lo(__trap_user_data_tlb_miss),gr2 - movgs gr2,bpcsr - bra __break_tlb_miss_common - -# step through an ITLB-miss handler from kernel mode - .globl __break_kernel_insn_tlb_miss -__break_kernel_insn_tlb_miss: - # we'll want to try the trap stub again - sethi.p %hi(__trap_kernel_insn_tlb_miss),gr2 - setlo %lo(__trap_kernel_insn_tlb_miss),gr2 - movgs gr2,bpcsr - bra __break_tlb_miss_common - -# step through a DTLB-miss handler from kernel mode - .globl __break_kernel_data_tlb_miss -__break_kernel_data_tlb_miss: - # we'll want to try the trap stub again - sethi.p %hi(__trap_kernel_data_tlb_miss),gr2 - setlo %lo(__trap_kernel_data_tlb_miss),gr2 - movgs gr2,bpcsr - bra __break_tlb_miss_common -#endif - -############################################################################### -# -# handle debug events originating with userspace -# -############################################################################### -__break_maybe_userspace: - LEDS 0x3003,gr2 - - setlos #BPSR_BS,gr2 - andcc gr3,gr2,gr0,icc0 - bne icc0,#0,__break_continue /* skip if PSR.S was 1 */ - - movsg brr,gr2 - andicc gr2,#BRR_ST|BRR_SB,gr0,icc0 - beq icc0,#0,__break_continue /* jump if not BREAK or single-step */ - - LEDS 0x3007,gr2 - - # do the first part of the exception prologue here - sethi.p %hi(__kernel_frame0_ptr),gr28 - setlo %lo(__kernel_frame0_ptr),gr28 - ldi @(gr28,#0),gr28 - andi gr28,#~7,gr28 - - # set up the kernel stack pointer - sti sp ,@(gr28,#REG_SP) - ori gr28,0,sp - sti gr0 ,@(gr28,#REG_GR(28)) - - stdi gr20,@(gr28,#REG_GR(20)) - stdi gr22,@(gr28,#REG_GR(22)) - - movsg tbr,gr20 - movsg bpcsr,gr21 - movsg psr,gr22 - - # determine the exception type and cancel single-stepping mode - or gr0,gr0,gr23 - - movsg dcr,gr2 - sethi.p %hi(DCR_SE),gr3 - setlo %lo(DCR_SE),gr3 - andcc gr2,gr3,gr0,icc0 - beq icc0,#0,__break_no_user_sstep /* must have been a BREAK insn */ - - not gr3,gr3 - and gr2,gr3,gr2 - movgs gr2,dcr - ori gr23,#REG__STATUS_STEP,gr23 - -__break_no_user_sstep: - LEDS 0x300f,gr2 - - movsg brr,gr2 - andi gr2,#BRR_ST|BRR_SB,gr2 - slli gr2,#1,gr2 - or gr23,gr2,gr23 - sti.p gr23,@(gr28,#REG__STATUS) /* record single step status */ - - # adjust the value acquired from TBR - this indicates the exception - setlos #~TBR_TT,gr2 - and.p gr20,gr2,gr20 - setlos #TBR_TT_BREAK,gr2 - or.p gr20,gr2,gr20 - - # fudge PSR.PS and BPSR.BS to return to kernel mode through the trap - # table as trap 126 - andi gr22,#~PSR_PS,gr22 /* PSR.PS should be 0 */ - movgs gr22,psr - - setlos #BPSR_BS,gr2 /* BPSR.BS should be 1 and BPSR.BET 0 */ - movgs gr2,bpsr - - # return through remainder of the exception prologue - # - need to load gr23 with return handler address - sethi.p %hi(__entry_return_from_user_exception),gr23 - setlo %lo(__entry_return_from_user_exception),gr23 - sethi.p %hi(__entry_common),gr3 - setlo %lo(__entry_common),gr3 - movgs gr3,bpcsr - - LEDS 0x301f,gr2 - - ldi @(gr31,#REG_CCR),gr3 - movgs gr3,ccr - lddi.p @(gr31,#REG_GR(2)),gr2 - xor gr31,gr31,gr31 - movgs gr0,brr -#ifdef CONFIG_MMU - movsg scr3,gr31 -#endif - rett #1 - -############################################################################### -# -# resume normal debug-mode entry -# -############################################################################### -__break_continue: - LEDS 0x4003,gr2 - - # set up the kernel stack pointer - sti sp,@(gr31,#REG_SP) - - sethi.p %hi(__break_frame_0),sp - setlo %lo(__break_frame_0),sp - - # finish building the exception frame - stdi gr4 ,@(gr31,#REG_GR(4)) - stdi gr6 ,@(gr31,#REG_GR(6)) - stdi gr8 ,@(gr31,#REG_GR(8)) - stdi gr10,@(gr31,#REG_GR(10)) - stdi gr12,@(gr31,#REG_GR(12)) - stdi gr14,@(gr31,#REG_GR(14)) - stdi gr16,@(gr31,#REG_GR(16)) - stdi gr18,@(gr31,#REG_GR(18)) - stdi gr20,@(gr31,#REG_GR(20)) - stdi gr22,@(gr31,#REG_GR(22)) - stdi gr24,@(gr31,#REG_GR(24)) - stdi gr26,@(gr31,#REG_GR(26)) - sti gr0 ,@(gr31,#REG_GR(28)) /* NULL frame pointer */ - sti gr29,@(gr31,#REG_GR(29)) - sti gr30,@(gr31,#REG_GR(30)) - sti gr8 ,@(gr31,#REG_ORIG_GR8) - -#ifdef CONFIG_MMU - movsg scr3,gr19 - sti gr19,@(gr31,#REG_GR(31)) -#endif - - movsg bpsr ,gr19 - movsg tbr ,gr20 - movsg bpcsr,gr21 - movsg psr ,gr22 - movsg isr ,gr23 - movsg cccr ,gr25 - movsg lr ,gr26 - movsg lcr ,gr27 - - andi.p gr22,#~(PSR_S|PSR_ET),gr5 /* rebuild PSR */ - andi gr19,#PSR_ET,gr4 - or.p gr4,gr5,gr5 - srli gr19,#10,gr4 - andi gr4,#PSR_S,gr4 - or.p gr4,gr5,gr5 - - setlos #-1,gr6 - sti gr20,@(gr31,#REG_TBR) - sti gr21,@(gr31,#REG_PC) - sti gr5 ,@(gr31,#REG_PSR) - sti gr23,@(gr31,#REG_ISR) - sti gr25,@(gr31,#REG_CCCR) - stdi gr26,@(gr31,#REG_LR) - sti gr6 ,@(gr31,#REG_SYSCALLNO) - - # store CPU-specific regs - movsg iacc0h,gr4 - movsg iacc0l,gr5 - stdi gr4,@(gr31,#REG_IACC0) - - movsg gner0,gr4 - movsg gner1,gr5 - stdi gr4,@(gr31,#REG_GNER0) - - # build the debug register frame - movsg brr,gr4 - movgs gr0,brr - movsg nmar,gr5 - movsg dcr,gr6 - - sethi.p %hi(__debug_status),gr7 - setlo %lo(__debug_status),gr7 - - stdi gr4 ,@(gr7,#DEBUG_BRR) - sti gr19,@(gr7,#DEBUG_BPSR) - sti.p gr6 ,@(gr7,#DEBUG_DCR) - - # trap exceptions during break handling and disable h/w breakpoints/watchpoints - sethi %hi(DCR_EBE),gr5 - setlo.p %lo(DCR_EBE),gr5 - sethi %hi(__entry_breaktrap_table),gr4 - setlo %lo(__entry_breaktrap_table),gr4 - movgs gr5,dcr - movgs gr4,tbr - - # set up kernel global registers - sethi.p %hi(__kernel_current_task),gr5 - setlo %lo(__kernel_current_task),gr5 - ld @(gr5,gr0),gr29 - ldi.p @(gr29,#4),gr15 ; __current_thread_info = current->thread_info - - sethi %hi(_gp),gr16 - setlo.p %lo(_gp),gr16 - - # make sure we (the kernel) get div-zero and misalignment exceptions - setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5 - movgs gr5,isr - - # enter the GDB stub - LEDS 0x4007,gr2 - - or.p gr0,gr0,fp - call debug_stub - - LEDS 0x403f,gr2 - - # return from break - lddi @(gr31,#REG_IACC0),gr4 - movgs gr4,iacc0h - movgs gr5,iacc0l - - lddi @(gr31,#REG_GNER0),gr4 - movgs gr4,gner0 - movgs gr5,gner1 - - lddi @(gr31,#REG_LR) ,gr26 - lddi @(gr31,#REG_CCR) ,gr24 - lddi @(gr31,#REG_PSR) ,gr22 - ldi @(gr31,#REG_PC) ,gr21 - ldi @(gr31,#REG_TBR) ,gr20 - - sethi.p %hi(__debug_status),gr6 - setlo %lo(__debug_status),gr6 - ldi.p @(gr6,#DEBUG_DCR) ,gr6 - - andi gr22,#PSR_S,gr19 /* rebuild BPSR */ - andi.p gr22,#PSR_ET,gr5 - slli gr19,#10,gr19 - or gr5,gr19,gr19 - - movgs gr6 ,dcr - movgs gr19,bpsr - movgs gr20,tbr - movgs gr21,bpcsr - movgs gr23,isr - movgs gr24,ccr - movgs gr25,cccr - movgs gr26,lr - movgs gr27,lcr - - LEDS 0x407f,gr2 - -#ifdef CONFIG_MMU - ldi @(gr31,#REG_GR(31)),gr2 - movgs gr2,scr3 -#endif - - ldi @(gr31,#REG_GR(30)),gr30 - ldi @(gr31,#REG_GR(29)),gr29 - lddi @(gr31,#REG_GR(26)),gr26 - lddi @(gr31,#REG_GR(24)),gr24 - lddi @(gr31,#REG_GR(22)),gr22 - lddi @(gr31,#REG_GR(20)),gr20 - lddi @(gr31,#REG_GR(18)),gr18 - lddi @(gr31,#REG_GR(16)),gr16 - lddi @(gr31,#REG_GR(14)),gr14 - lddi @(gr31,#REG_GR(12)),gr12 - lddi @(gr31,#REG_GR(10)),gr10 - lddi @(gr31,#REG_GR(8)) ,gr8 - lddi @(gr31,#REG_GR(6)) ,gr6 - lddi @(gr31,#REG_GR(4)) ,gr4 - lddi @(gr31,#REG_GR(2)) ,gr2 - ldi.p @(gr31,#REG_SP) ,sp - - xor gr31,gr31,gr31 - movgs gr0,brr -#ifdef CONFIG_MMU - movsg scr3,gr31 -#endif - rett #1 - -################################################################################################### -# -# GDB stub "system calls" -# -################################################################################################### - -#ifdef CONFIG_GDBSTUB - # void gdbstub_console_write(struct console *con, const char *p, unsigned n) - .globl gdbstub_console_write -gdbstub_console_write: - break - bralr -#endif - - # GDB stub BUG() trap - # GR8 is the proposed signal number - .globl __debug_bug_trap -__debug_bug_trap: - break - bralr - - # transfer kernel exeception to GDB for handling - .globl __break_hijack_kernel_event -__break_hijack_kernel_event: - break - .globl __break_hijack_kernel_event_breaks_here -__break_hijack_kernel_event_breaks_here: - nop - -#ifdef CONFIG_MMU - # handle a return from TLB-miss that requires single-step reactivation - .globl __break_tlb_miss_return_break -__break_tlb_miss_return_break: - break -__break_tlb_miss_return_breaks_here: - nop -#endif - - # guard the first .text label in the next file from confusion - nop diff --git a/arch/frv/kernel/cmode.S b/arch/frv/kernel/cmode.S deleted file mode 100644 index 53deeb5d7e87..000000000000 --- a/arch/frv/kernel/cmode.S +++ /dev/null @@ -1,189 +0,0 @@ -/* cmode.S: clock mode management - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Woodhouse (dwmw2@infradead.org) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include <linux/sys.h> -#include <linux/linkage.h> -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/ptrace.h> -#include <asm/errno.h> -#include <asm/cache.h> -#include <asm/spr-regs.h> - -#define __addr_MASK 0xfeff9820 /* interrupt controller mask */ - -#define __addr_SDRAMC 0xfe000400 /* SDRAM controller regs */ -#define SDRAMC_DSTS 0x28 /* SDRAM status */ -#define SDRAMC_DSTS_SSI 0x00000001 /* indicates that the SDRAM is in self-refresh mode */ -#define SDRAMC_DRCN 0x30 /* SDRAM refresh control */ -#define SDRAMC_DRCN_SR 0x00000001 /* transition SDRAM into self-refresh mode */ -#define __addr_CLKC 0xfeff9a00 -#define CLKC_SWCMODE 0x00000008 -#define __addr_LEDS 0xe1200004 - -.macro li v r - sethi.p %hi(\v),\r - setlo %lo(\v),\r -.endm - - .text - .balign 4 - - -############################################################################### -# -# Change CMODE -# - void frv_change_cmode(int cmode) -# -############################################################################### - .globl frv_change_cmode - .type frv_change_cmode,@function - -.macro LEDS v -#ifdef DEBUG_CMODE - setlos #~\v,gr10 - sti gr10,@(gr11,#0) - membar -#endif -.endm - -frv_change_cmode: - movsg lr,gr9 -#ifdef DEBUG_CMODE - li __addr_LEDS,gr11 -#endif - dcef @(gr0,gr0),#1 - - # Shift argument left by 24 bits to fit in SWCMODE register later. - slli gr8,#24,gr8 - - # (1) Set '0' in the PSR.ET bit, and prohibit interrupts. - movsg psr,gr14 - andi gr14,#~PSR_ET,gr3 - movgs gr3,psr - -#if 0 // Fujitsu recommend to skip this and will update docs. - # (2) Set '0' to all bits of the MASK register of the interrupt - # controller, and mask interrupts. - li __addr_MASK,gr12 - ldi @(gr12,#0),gr13 - li 0xffff0000,gr4 - sti gr4,@(gr12,#0) -#endif - - # (3) Stop the transfer function of DMAC. Stop all the bus masters - # to access SDRAM and the internal resources. - - # (already done by caller) - - # (4) Preload a series of following instructions to the instruction - # cache. - li #__cmode_icache_lock_start,gr3 - li #__cmode_icache_lock_end,gr4 - -1: icpl gr3,gr0,#1 - addi gr3,#L1_CACHE_BYTES,gr3 - cmp gr4,gr3,icc0 - bhi icc0,#0,1b - - # Set up addresses in regs for later steps. - setlos SDRAMC_DRCN_SR,gr3 - li __addr_SDRAMC,gr4 - li __addr_CLKC,gr5 - ldi @(gr5,#0),gr6 - li #0x80000000,gr7 - or gr6,gr7,gr6 - - bra __cmode_icache_lock_start - - .balign L1_CACHE_BYTES -__cmode_icache_lock_start: - - # (5) Flush the content of all caches by the DCEF instruction. - dcef @(gr0,gr0),#1 - - # (6) Execute loading the dummy for SDRAM. - ldi @(gr9,#0),gr0 - - # (7) Set '1' to the DRCN.SR bit, and change SDRAM to the - # self-refresh mode. Execute the dummy load to all memory - # devices set to cacheable on the external bus side in parallel - # with this. - sti gr3,@(gr4,#SDRAMC_DRCN) - - # (8) Execute memory barrier instruction (MEMBAR). - membar - - # (9) Read the DSTS register repeatedly until '1' stands in the - # DSTS.SSI field. -1: ldi @(gr4,#SDRAMC_DSTS),gr3 - andicc gr3,#SDRAMC_DSTS_SSI,gr3,icc0 - beq icc0,#0,1b - - # (10) Execute memory barrier instruction (MEMBAR). - membar - -#if 1 - # (11) Set the value of CMODE that you want to change to - # SWCMODE.SWCM[3:0]. - sti gr8,@(gr5,#CLKC_SWCMODE) - - # (12) Set '1' to the CLKC.SWEN bit. In that case, do not change - # fields other than SWEN of the CLKC register. - sti gr6,@(gr5,#0) -#endif - # (13) Execute the instruction just after the memory barrier - # instruction that executes the self-loop 256 times. (Meanwhile, - # the CMODE switch is done.) - membar - setlos #256,gr7 -2: subicc gr7,#1,gr7,icc0 - bne icc0,#2,2b - - LEDS 0x36 - - # (14) Release the self-refresh of SDRAM. - sti gr0,@(gr4,#SDRAMC_DRCN) - - # Wait for it... -3: ldi @(gr4,#SDRAMC_DSTS),gr3 - andicc gr3,#SDRAMC_DSTS_SSI,gr3,icc0 - bne icc0,#2,3b - -#if 0 - li 0x0100000,gr10 -4: subicc gr10,#1,gr10,icc0 - - bne icc0,#0,4b -#endif - -__cmode_icache_lock_end: - - li #__cmode_icache_lock_start,gr3 - li #__cmode_icache_lock_end,gr4 - -4: icul gr3 - addi gr3,#L1_CACHE_BYTES,gr3 - cmp gr4,gr3,icc0 - bhi icc0,#0,4b - -#if 0 // Fujitsu recommend to skip this and will update docs. - # (15) Release the interrupt mask setting of the MASK register of - # the interrupt controller if necessary. - sti gr13,@(gr12,#0) -#endif - # (16) Set 1' in the PSR.ET bit, and permit interrupt. - movgs gr14,psr - - bralr - - .size frv_change_cmode, .-frv_change_cmode diff --git a/arch/frv/kernel/debug-stub.c b/arch/frv/kernel/debug-stub.c deleted file mode 100644 index a0228f717ef2..000000000000 --- a/arch/frv/kernel/debug-stub.c +++ /dev/null @@ -1,258 +0,0 @@ -/* debug-stub.c: debug-mode stub - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/serial_reg.h> -#include <linux/start_kernel.h> - -#include <asm/serial-regs.h> -#include <asm/timer-regs.h> -#include <asm/irc-regs.h> -#include <asm/gdb-stub.h> -#include "gdb-io.h" - -/* CPU board CON5 */ -#define __UART0(X) (*(volatile uint8_t *)(UART0_BASE + (UART_##X))) - -#define LSR_WAIT_FOR0(STATE) \ -do { \ -} while (!(__UART0(LSR) & UART_LSR_##STATE)) - -#define FLOWCTL_QUERY0(LINE) ({ __UART0(MSR) & UART_MSR_##LINE; }) -#define FLOWCTL_CLEAR0(LINE) do { __UART0(MCR) &= ~UART_MCR_##LINE; } while (0) -#define FLOWCTL_SET0(LINE) do { __UART0(MCR) |= UART_MCR_##LINE; } while (0) - -#define FLOWCTL_WAIT_FOR0(LINE) \ -do { \ - gdbstub_do_rx(); \ -} while(!FLOWCTL_QUERY(LINE)) - -struct frv_debug_status __debug_status; - -static void __init debug_stub_init(void); - -/*****************************************************************************/ -/* - * debug mode handler stub - * - we come here with the CPU in debug mode and with exceptions disabled - * - handle debugging services for userspace - */ -asmlinkage void debug_stub(void) -{ - unsigned long hsr0; - int type = 0; - - static u8 inited = 0; - if (!inited) { - debug_stub_init(); - type = -1; - inited = 1; - } - - hsr0 = __get_HSR(0); - if (hsr0 & HSR0_ETMD) - __set_HSR(0, hsr0 & ~HSR0_ETMD); - - /* disable single stepping */ - __debug_status.dcr &= ~DCR_SE; - - /* kernel mode can propose an exception be handled in debug mode by jumping to a special - * location */ - if (__debug_frame->pc == (unsigned long) __break_hijack_kernel_event_breaks_here) { - /* replace the debug frame with the kernel frame and discard - * the top kernel context */ - *__debug_frame = *__frame; - __frame = __debug_frame->next_frame; - __debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12; - __debug_status.brr |= BRR_EB; - } - - if (__debug_frame->pc == (unsigned long) __debug_bug_trap + 4) { - __debug_frame->pc = __debug_frame->lr; - type = __debug_frame->gr8; - } - -#ifdef CONFIG_GDBSTUB - gdbstub(type); -#endif - - if (hsr0 & HSR0_ETMD) - __set_HSR(0, __get_HSR(0) | HSR0_ETMD); - -} /* end debug_stub() */ - -/*****************************************************************************/ -/* - * debug stub initialisation - */ -static void __init debug_stub_init(void) -{ - __set_IRR(6, 0xff000000); /* map ERRs to NMI */ - __set_IITMR(1, 0x20000000); /* ERR0/1, UART0/1 IRQ detect levels */ - - asm volatile(" movgs gr0,ibar0 \n" - " movgs gr0,ibar1 \n" - " movgs gr0,ibar2 \n" - " movgs gr0,ibar3 \n" - " movgs gr0,dbar0 \n" - " movgs gr0,dbmr00 \n" - " movgs gr0,dbmr01 \n" - " movgs gr0,dbdr00 \n" - " movgs gr0,dbdr01 \n" - " movgs gr0,dbar1 \n" - " movgs gr0,dbmr10 \n" - " movgs gr0,dbmr11 \n" - " movgs gr0,dbdr10 \n" - " movgs gr0,dbdr11 \n" - ); - - /* deal with debugging stub initialisation and initial pause */ - if (__debug_frame->pc == (unsigned long) __debug_stub_init_break) - __debug_frame->pc = (unsigned long) start_kernel; - - /* enable the debug events we want to trap */ - __debug_status.dcr = DCR_EBE; - -#ifdef CONFIG_GDBSTUB - gdbstub_init(); -#endif - - __clr_MASK_all(); - __clr_MASK(15); - __clr_RC(15); - -} /* end debug_stub_init() */ - -/*****************************************************************************/ -/* - * kernel "exit" trap for gdb stub - */ -void debug_stub_exit(int status) -{ - -#ifdef CONFIG_GDBSTUB - gdbstub_exit(status); -#endif - -} /* end debug_stub_exit() */ - -/*****************************************************************************/ -/* - * send string to serial port - */ -void debug_to_serial(const char *p, int n) -{ - char ch; - - for (; n > 0; n--) { - ch = *p++; - FLOWCTL_SET0(DTR); - LSR_WAIT_FOR0(THRE); - // FLOWCTL_WAIT_FOR(CTS); - - if (ch == 0x0a) { - __UART0(TX) = 0x0d; - mb(); - LSR_WAIT_FOR0(THRE); - // FLOWCTL_WAIT_FOR(CTS); - } - __UART0(TX) = ch; - mb(); - - FLOWCTL_CLEAR0(DTR); - } - -} /* end debug_to_serial() */ - -/*****************************************************************************/ -/* - * send string to serial port - */ -void debug_to_serial2(const char *fmt, ...) -{ - va_list va; - char buf[64]; - int n; - - va_start(va, fmt); - n = vsprintf(buf, fmt, va); - va_end(va); - - debug_to_serial(buf, n); - -} /* end debug_to_serial2() */ - -/*****************************************************************************/ -/* - * set up the ttyS0 serial port baud rate timers - */ -void __init console_set_baud(unsigned baud) -{ - unsigned value, high, low; - u8 lcr; - - /* work out the divisor to give us the nearest higher baud rate */ - value = __serial_clock_speed_HZ / 16 / baud; - - /* determine the baud rate range */ - high = __serial_clock_speed_HZ / 16 / value; - low = __serial_clock_speed_HZ / 16 / (value + 1); - - /* pick the nearest bound */ - if (low + (high - low) / 2 > baud) - value++; - - lcr = __UART0(LCR); - __UART0(LCR) |= UART_LCR_DLAB; - mb(); - __UART0(DLL) = value & 0xff; - __UART0(DLM) = (value >> 8) & 0xff; - mb(); - __UART0(LCR) = lcr; - mb(); - -} /* end console_set_baud() */ - -/*****************************************************************************/ -/* - * - */ -int __init console_get_baud(void) -{ - unsigned value; - u8 lcr; - - lcr = __UART0(LCR); - __UART0(LCR) |= UART_LCR_DLAB; - mb(); - value = __UART0(DLM) << 8; - value |= __UART0(DLL); - __UART0(LCR) = lcr; - mb(); - - return value; -} /* end console_get_baud() */ - -/*****************************************************************************/ -/* - * display BUG() info - */ -#ifndef CONFIG_NO_KERNEL_MSG -void __debug_bug_printk(const char *file, unsigned line) -{ - printk("kernel BUG at %s:%d!\n", file, line); - -} /* end __debug_bug_printk() */ -#endif diff --git a/arch/frv/kernel/dma.c b/arch/frv/kernel/dma.c deleted file mode 100644 index 370dc9fa0b11..000000000000 --- a/arch/frv/kernel/dma.c +++ /dev/null @@ -1,463 +0,0 @@ -/* dma.c: DMA controller management on FR401 and the like - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/spinlock.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <asm/dma.h> -#include <asm/gpio-regs.h> -#include <asm/irc-regs.h> -#include <asm/cpu-irqs.h> - -struct frv_dma_channel { - uint8_t flags; -#define FRV_DMA_FLAGS_RESERVED 0x01 -#define FRV_DMA_FLAGS_INUSE 0x02 -#define FRV_DMA_FLAGS_PAUSED 0x04 - uint8_t cap; /* capabilities available */ - int irq; /* completion IRQ */ - uint32_t dreqbit; - uint32_t dackbit; - uint32_t donebit; - const unsigned long ioaddr; /* DMA controller regs addr */ - const char *devname; - dma_irq_handler_t handler; - void *data; -}; - - -#define __get_DMAC(IO,X) ({ *(volatile unsigned long *)((IO) + DMAC_##X##x); }) - -#define __set_DMAC(IO,X,V) \ -do { \ - *(volatile unsigned long *)((IO) + DMAC_##X##x) = (V); \ - mb(); \ -} while(0) - -#define ___set_DMAC(IO,X,V) \ -do { \ - *(volatile unsigned long *)((IO) + DMAC_##X##x) = (V); \ -} while(0) - - -static struct frv_dma_channel frv_dma_channels[FRV_DMA_NCHANS] = { - [0] = { - .cap = FRV_DMA_CAP_DREQ | FRV_DMA_CAP_DACK | FRV_DMA_CAP_DONE, - .irq = IRQ_CPU_DMA0, - .dreqbit = SIR_DREQ0_INPUT, - .dackbit = SOR_DACK0_OUTPUT, - .donebit = SOR_DONE0_OUTPUT, - .ioaddr = 0xfe000900, - }, - [1] = { - .cap = FRV_DMA_CAP_DREQ | FRV_DMA_CAP_DACK | FRV_DMA_CAP_DONE, - .irq = IRQ_CPU_DMA1, - .dreqbit = SIR_DREQ1_INPUT, - .dackbit = SOR_DACK1_OUTPUT, - .donebit = SOR_DONE1_OUTPUT, - .ioaddr = 0xfe000980, - }, - [2] = { - .cap = FRV_DMA_CAP_DREQ | FRV_DMA_CAP_DACK, - .irq = IRQ_CPU_DMA2, - .dreqbit = SIR_DREQ2_INPUT, - .dackbit = SOR_DACK2_OUTPUT, - .ioaddr = 0xfe000a00, - }, - [3] = { - .cap = FRV_DMA_CAP_DREQ | FRV_DMA_CAP_DACK, - .irq = IRQ_CPU_DMA3, - .dreqbit = SIR_DREQ3_INPUT, - .dackbit = SOR_DACK3_OUTPUT, - .ioaddr = 0xfe000a80, - }, - [4] = { - .cap = FRV_DMA_CAP_DREQ, - .irq = IRQ_CPU_DMA4, - .dreqbit = SIR_DREQ4_INPUT, - .ioaddr = 0xfe001000, - }, - [5] = { - .cap = FRV_DMA_CAP_DREQ, - .irq = IRQ_CPU_DMA5, - .dreqbit = SIR_DREQ5_INPUT, - .ioaddr = 0xfe001080, - }, - [6] = { - .cap = FRV_DMA_CAP_DREQ, - .irq = IRQ_CPU_DMA6, - .dreqbit = SIR_DREQ6_INPUT, - .ioaddr = 0xfe001100, - }, - [7] = { - .cap = FRV_DMA_CAP_DREQ, - .irq = IRQ_CPU_DMA7, - .dreqbit = SIR_DREQ7_INPUT, - .ioaddr = 0xfe001180, - }, -}; - -static DEFINE_RWLOCK(frv_dma_channels_lock); - -unsigned int frv_dma_inprogress; - -#define frv_clear_dma_inprogress(channel) \ - (void)__atomic32_fetch_and(~(1 << (channel)), &frv_dma_inprogress); - -#define frv_set_dma_inprogress(channel) \ - (void)__atomic32_fetch_or(1 << (channel), &frv_dma_inprogress); - -/*****************************************************************************/ -/* - * DMA irq handler - determine channel involved, grab status and call real handler - */ -static irqreturn_t dma_irq_handler(int irq, void *_channel) -{ - struct frv_dma_channel *channel = _channel; - - frv_clear_dma_inprogress(channel - frv_dma_channels); - return channel->handler(channel - frv_dma_channels, - __get_DMAC(channel->ioaddr, CSTR), - channel->data); - -} /* end dma_irq_handler() */ - -/*****************************************************************************/ -/* - * Determine which DMA controllers are present on this CPU - */ -void __init frv_dma_init(void) -{ - unsigned long psr = __get_PSR(); - int num_dma, i; - - /* First, determine how many DMA channels are available */ - switch (PSR_IMPLE(psr)) { - case PSR_IMPLE_FR405: - case PSR_IMPLE_FR451: - case PSR_IMPLE_FR501: - case PSR_IMPLE_FR551: - num_dma = FRV_DMA_8CHANS; - break; - - case PSR_IMPLE_FR401: - default: - num_dma = FRV_DMA_4CHANS; - break; - } - - /* Now mark all of the non-existent channels as reserved */ - for(i = num_dma; i < FRV_DMA_NCHANS; i++) - frv_dma_channels[i].flags = FRV_DMA_FLAGS_RESERVED; - -} /* end frv_dma_init() */ - -/*****************************************************************************/ -/* - * allocate a DMA controller channel and the IRQ associated with it - */ -int frv_dma_open(const char *devname, - unsigned long dmamask, - int dmacap, - dma_irq_handler_t handler, - unsigned long irq_flags, - void *data) -{ - struct frv_dma_channel *channel; - int dma, ret; - uint32_t val; - - write_lock(&frv_dma_channels_lock); - - ret = -ENOSPC; - - for (dma = FRV_DMA_NCHANS - 1; dma >= 0; dma--) { - channel = &frv_dma_channels[dma]; - - if (!test_bit(dma, &dmamask)) - continue; - - if ((channel->cap & dmacap) != dmacap) - continue; - - if (!frv_dma_channels[dma].flags) - goto found; - } - - goto out; - - found: - ret = request_irq(channel->irq, dma_irq_handler, irq_flags, devname, channel); - if (ret < 0) - goto out; - - /* okay, we've allocated all the resources */ - channel = &frv_dma_channels[dma]; - - channel->flags |= FRV_DMA_FLAGS_INUSE; - channel->devname = devname; - channel->handler = handler; - channel->data = data; - - /* Now make sure we are set up for DMA and not GPIO */ - /* SIR bit must be set for DMA to work */ - __set_SIR(channel->dreqbit | __get_SIR()); - /* SOR bits depend on what the caller requests */ - val = __get_SOR(); - if(dmacap & FRV_DMA_CAP_DACK) - val |= channel->dackbit; - else - val &= ~channel->dackbit; - if(dmacap & FRV_DMA_CAP_DONE) - val |= channel->donebit; - else - val &= ~channel->donebit; - __set_SOR(val); - - ret = dma; - out: - write_unlock(&frv_dma_channels_lock); - return ret; -} /* end frv_dma_open() */ - -EXPORT_SYMBOL(frv_dma_open); - -/*****************************************************************************/ -/* - * close a DMA channel and its associated interrupt - */ -void frv_dma_close(int dma) -{ - struct frv_dma_channel *channel = &frv_dma_channels[dma]; - unsigned long flags; - - write_lock_irqsave(&frv_dma_channels_lock, flags); - - free_irq(channel->irq, channel); - frv_dma_stop(dma); - - channel->flags &= ~FRV_DMA_FLAGS_INUSE; - - write_unlock_irqrestore(&frv_dma_channels_lock, flags); -} /* end frv_dma_close() */ - -EXPORT_SYMBOL(frv_dma_close); - -/*****************************************************************************/ -/* - * set static configuration on a DMA channel - */ -void frv_dma_config(int dma, unsigned long ccfr, unsigned long cctr, unsigned long apr) -{ - unsigned long ioaddr = frv_dma_channels[dma].ioaddr; - - ___set_DMAC(ioaddr, CCFR, ccfr); - ___set_DMAC(ioaddr, CCTR, cctr); - ___set_DMAC(ioaddr, APR, apr); - mb(); - -} /* end frv_dma_config() */ - -EXPORT_SYMBOL(frv_dma_config); - -/*****************************************************************************/ -/* - * start a DMA channel - */ -void frv_dma_start(int dma, - unsigned long sba, unsigned long dba, - unsigned long pix, unsigned long six, unsigned long bcl) -{ - unsigned long ioaddr = frv_dma_channels[dma].ioaddr; - - ___set_DMAC(ioaddr, SBA, sba); - ___set_DMAC(ioaddr, DBA, dba); - ___set_DMAC(ioaddr, PIX, pix); - ___set_DMAC(ioaddr, SIX, six); - ___set_DMAC(ioaddr, BCL, bcl); - ___set_DMAC(ioaddr, CSTR, 0); - mb(); - - __set_DMAC(ioaddr, CCTR, __get_DMAC(ioaddr, CCTR) | DMAC_CCTRx_ACT); - frv_set_dma_inprogress(dma); - -} /* end frv_dma_start() */ - -EXPORT_SYMBOL(frv_dma_start); - -/*****************************************************************************/ -/* - * restart a DMA channel that's been stopped in circular addressing mode by comparison-end - */ -void frv_dma_restart_circular(int dma, unsigned long six) -{ - unsigned long ioaddr = frv_dma_channels[dma].ioaddr; - - ___set_DMAC(ioaddr, SIX, six); - ___set_DMAC(ioaddr, CSTR, __get_DMAC(ioaddr, CSTR) & ~DMAC_CSTRx_CE); - mb(); - - __set_DMAC(ioaddr, CCTR, __get_DMAC(ioaddr, CCTR) | DMAC_CCTRx_ACT); - frv_set_dma_inprogress(dma); - -} /* end frv_dma_restart_circular() */ - -EXPORT_SYMBOL(frv_dma_restart_circular); - -/*****************************************************************************/ -/* - * stop a DMA channel - */ -void frv_dma_stop(int dma) -{ - unsigned long ioaddr = frv_dma_channels[dma].ioaddr; - uint32_t cctr; - - ___set_DMAC(ioaddr, CSTR, 0); - cctr = __get_DMAC(ioaddr, CCTR); - cctr &= ~(DMAC_CCTRx_IE | DMAC_CCTRx_ACT); - cctr |= DMAC_CCTRx_FC; /* fifo clear */ - __set_DMAC(ioaddr, CCTR, cctr); - __set_DMAC(ioaddr, BCL, 0); - frv_clear_dma_inprogress(dma); -} /* end frv_dma_stop() */ - -EXPORT_SYMBOL(frv_dma_stop); - -/*****************************************************************************/ -/* - * test interrupt status of DMA channel - */ -int is_frv_dma_interrupting(int dma) -{ - unsigned long ioaddr = frv_dma_channels[dma].ioaddr; - - return __get_DMAC(ioaddr, CSTR) & (1 << 23); - -} /* end is_frv_dma_interrupting() */ - -EXPORT_SYMBOL(is_frv_dma_interrupting); - -/*****************************************************************************/ -/* - * dump data about a DMA channel - */ -void frv_dma_dump(int dma) -{ - unsigned long ioaddr = frv_dma_channels[dma].ioaddr; - unsigned long cstr, pix, six, bcl; - - cstr = __get_DMAC(ioaddr, CSTR); - pix = __get_DMAC(ioaddr, PIX); - six = __get_DMAC(ioaddr, SIX); - bcl = __get_DMAC(ioaddr, BCL); - - printk("DMA[%d] cstr=%lx pix=%lx six=%lx bcl=%lx\n", dma, cstr, pix, six, bcl); - -} /* end frv_dma_dump() */ - -EXPORT_SYMBOL(frv_dma_dump); - -/*****************************************************************************/ -/* - * pause all DMA controllers - * - called by clock mangling routines - * - caller must be holding interrupts disabled - */ -void frv_dma_pause_all(void) -{ - struct frv_dma_channel *channel; - unsigned long ioaddr; - unsigned long cstr, cctr; - int dma; - - write_lock(&frv_dma_channels_lock); - - for (dma = FRV_DMA_NCHANS - 1; dma >= 0; dma--) { - channel = &frv_dma_channels[dma]; - - if (!(channel->flags & FRV_DMA_FLAGS_INUSE)) - continue; - - ioaddr = channel->ioaddr; - cctr = __get_DMAC(ioaddr, CCTR); - if (cctr & DMAC_CCTRx_ACT) { - cctr &= ~DMAC_CCTRx_ACT; - __set_DMAC(ioaddr, CCTR, cctr); - - do { - cstr = __get_DMAC(ioaddr, CSTR); - } while (cstr & DMAC_CSTRx_BUSY); - - if (cstr & DMAC_CSTRx_FED) - channel->flags |= FRV_DMA_FLAGS_PAUSED; - frv_clear_dma_inprogress(dma); - } - } - -} /* end frv_dma_pause_all() */ - -EXPORT_SYMBOL(frv_dma_pause_all); - -/*****************************************************************************/ -/* - * resume paused DMA controllers - * - called by clock mangling routines - * - caller must be holding interrupts disabled - */ -void frv_dma_resume_all(void) -{ - struct frv_dma_channel *channel; - unsigned long ioaddr; - unsigned long cstr, cctr; - int dma; - - for (dma = FRV_DMA_NCHANS - 1; dma >= 0; dma--) { - channel = &frv_dma_channels[dma]; - - if (!(channel->flags & FRV_DMA_FLAGS_PAUSED)) - continue; - - ioaddr = channel->ioaddr; - cstr = __get_DMAC(ioaddr, CSTR); - cstr &= ~(DMAC_CSTRx_FED | DMAC_CSTRx_INT); - __set_DMAC(ioaddr, CSTR, cstr); - - cctr = __get_DMAC(ioaddr, CCTR); - cctr |= DMAC_CCTRx_ACT; - __set_DMAC(ioaddr, CCTR, cctr); - - channel->flags &= ~FRV_DMA_FLAGS_PAUSED; - frv_set_dma_inprogress(dma); - } - - write_unlock(&frv_dma_channels_lock); - -} /* end frv_dma_resume_all() */ - -EXPORT_SYMBOL(frv_dma_resume_all); - -/*****************************************************************************/ -/* - * dma status clear - */ -void frv_dma_status_clear(int dma) -{ - unsigned long ioaddr = frv_dma_channels[dma].ioaddr; - uint32_t cctr; - ___set_DMAC(ioaddr, CSTR, 0); - - cctr = __get_DMAC(ioaddr, CCTR); -} /* end frv_dma_status_clear() */ - -EXPORT_SYMBOL(frv_dma_status_clear); diff --git a/arch/frv/kernel/entry-table.S b/arch/frv/kernel/entry-table.S deleted file mode 100644 index 06c5ae191e59..000000000000 --- a/arch/frv/kernel/entry-table.S +++ /dev/null @@ -1,329 +0,0 @@ -/* entry-table.S: main trap vector tables and exception jump table - * - * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include <linux/sys.h> -#include <linux/linkage.h> -#include <asm/spr-regs.h> - -############################################################################### -# -# Declare the main trap and vector tables -# -# There are six tables: -# -# (1) The trap table for debug mode -# (2) The trap table for kernel mode -# (3) The trap table for user mode -# -# The CPU jumps to an appropriate slot in the appropriate table to perform -# exception processing. We have three different tables for the three -# different CPU modes because there is no hardware differentiation between -# stack pointers for these three modes, and so we have to invent one when -# crossing mode boundaries. -# -# (4) The exception handler vector table -# -# The user and kernel trap tables use the same prologue for normal -# exception processing. The prologue then jumps to the handler in this -# table, as indexed by the exception ID from the TBR. -# -# (5) The fixup table for kernel-trap single-step -# (6) The fixup table for user-trap single-step -# -# Due to the way single-stepping works on this CPU (single-step is not -# disabled when crossing exception boundaries, only when in debug mode), -# we have to catch the single-step event in break.S and jump to the fixup -# routine pointed to by this table. -# -# The linker script places the user mode and kernel mode trap tables on to -# the same 8Kb page, so that break.S can be more efficient when performing -# single-step bypass management -# -############################################################################### - - # trap table for entry from debug mode - .section .trap.break,"ax" - .balign 256*16 - .globl __entry_breaktrap_table -__entry_breaktrap_table: - - # trap table for entry from user mode - .section .trap.user,"ax" - .balign 256*16 - .globl __entry_usertrap_table -__entry_usertrap_table: - - # trap table for entry from kernel mode - .section .trap.kernel,"ax" - .balign 256*16 - .globl __entry_kerneltrap_table -__entry_kerneltrap_table: - - # exception handler jump table - .section .trap.vector,"ax" - .balign 256*4 - .globl __entry_vector_table -__entry_vector_table: - - # trap fixup table for single-stepping in user mode - .section .trap.fixup.user,"a" - .balign 256*4 - .globl __break_usertrap_fixup_table -__break_usertrap_fixup_table: - - # trap fixup table for single-stepping in user mode - .section .trap.fixup.kernel,"a" - .balign 256*4 - .globl __break_kerneltrap_fixup_table -__break_kerneltrap_fixup_table: - - # handler declaration for a software or program interrupt -.macro VECTOR_SOFTPROG tbr_tt, vec - .section .trap.user - .org \tbr_tt - bra __entry_uspace_softprog_interrupt - .section .trap.fixup.user - .org \tbr_tt >> 2 - .long __break_step_uspace_softprog_interrupt - .section .trap.kernel - .org \tbr_tt - bra __entry_kernel_softprog_interrupt - .section .trap.fixup.kernel - .org \tbr_tt >> 2 - .long __break_step_kernel_softprog_interrupt - .section .trap.vector - .org \tbr_tt >> 2 - .long \vec -.endm - - # handler declaration for a maskable external interrupt -.macro VECTOR_IRQ tbr_tt, vec - .section .trap.user - .org \tbr_tt - bra __entry_uspace_external_interrupt - .section .trap.fixup.user - .org \tbr_tt >> 2 - .long __break_step_uspace_external_interrupt - .section .trap.kernel - .org \tbr_tt - # deal with virtual interrupt disablement - beq icc2,#0,__entry_kernel_external_interrupt_virtually_disabled - bra __entry_kernel_external_interrupt - .section .trap.fixup.kernel - .org \tbr_tt >> 2 - .long __break_step_kernel_external_interrupt - .section .trap.vector - .org \tbr_tt >> 2 - .long \vec -.endm - - # handler declaration for an NMI external interrupt -.macro VECTOR_NMI tbr_tt, vec - .section .trap.user - .org \tbr_tt - break - break - break - break - .section .trap.kernel - .org \tbr_tt - break - break - break - break - .section .trap.vector - .org \tbr_tt >> 2 - .long \vec -.endm - - # handler declaration for an MMU only software or program interrupt -.macro VECTOR_SP_MMU tbr_tt, vec -#ifdef CONFIG_MMU - VECTOR_SOFTPROG \tbr_tt, \vec -#else - VECTOR_NMI \tbr_tt, 0 -#endif -.endm - - -############################################################################### -# -# specification of the vectors -# - note: each macro inserts code into multiple sections -# -############################################################################### - VECTOR_SP_MMU TBR_TT_INSTR_MMU_MISS, __entry_insn_mmu_miss - VECTOR_SOFTPROG TBR_TT_INSTR_ACC_ERROR, __entry_insn_access_error - VECTOR_SOFTPROG TBR_TT_INSTR_ACC_EXCEP, __entry_insn_access_exception - VECTOR_SOFTPROG TBR_TT_PRIV_INSTR, __entry_privileged_instruction - VECTOR_SOFTPROG TBR_TT_ILLEGAL_INSTR, __entry_illegal_instruction - VECTOR_SOFTPROG TBR_TT_FP_EXCEPTION, __entry_media_exception - VECTOR_SOFTPROG TBR_TT_MP_EXCEPTION, __entry_media_exception - VECTOR_SOFTPROG TBR_TT_DATA_ACC_ERROR, __entry_data_access_error - VECTOR_SP_MMU TBR_TT_DATA_MMU_MISS, __entry_data_mmu_miss - VECTOR_SOFTPROG TBR_TT_DATA_ACC_EXCEP, __entry_data_access_exception - VECTOR_SOFTPROG TBR_TT_DATA_STR_ERROR, __entry_data_store_error - VECTOR_SOFTPROG TBR_TT_DIVISION_EXCEP, __entry_division_exception - -#ifdef CONFIG_MMU - .section .trap.user - .org TBR_TT_INSTR_TLB_MISS - .globl __trap_user_insn_tlb_miss -__trap_user_insn_tlb_miss: - movsg ear0,gr28 /* faulting address */ - movsg scr0,gr31 /* get mapped PTD coverage start address */ - xor.p gr28,gr31,gr31 /* compare addresses */ - bra __entry_user_insn_tlb_miss - - .org TBR_TT_DATA_TLB_MISS - .globl __trap_user_data_tlb_miss -__trap_user_data_tlb_miss: - movsg ear0,gr28 /* faulting address */ - movsg scr1,gr31 /* get mapped PTD coverage start address */ - xor.p gr28,gr31,gr31 /* compare addresses */ - bra __entry_user_data_tlb_miss - - .section .trap.kernel - .org TBR_TT_INSTR_TLB_MISS - .globl __trap_kernel_insn_tlb_miss -__trap_kernel_insn_tlb_miss: - movsg ear0,gr29 /* faulting address */ - movsg scr0,gr31 /* get mapped PTD coverage start address */ - xor.p gr29,gr31,gr31 /* compare addresses */ - bra __entry_kernel_insn_tlb_miss - - .org TBR_TT_DATA_TLB_MISS - .globl __trap_kernel_data_tlb_miss -__trap_kernel_data_tlb_miss: - movsg ear0,gr29 /* faulting address */ - movsg scr1,gr31 /* get mapped PTD coverage start address */ - xor.p gr29,gr31,gr31 /* compare addresses */ - bra __entry_kernel_data_tlb_miss - - .section .trap.fixup.user - .org TBR_TT_INSTR_TLB_MISS >> 2 - .globl __trap_fixup_user_insn_tlb_miss -__trap_fixup_user_insn_tlb_miss: - .long __break_user_insn_tlb_miss - .org TBR_TT_DATA_TLB_MISS >> 2 - .globl __trap_fixup_user_data_tlb_miss -__trap_fixup_user_data_tlb_miss: - .long __break_user_data_tlb_miss - - .section .trap.fixup.kernel - .org TBR_TT_INSTR_TLB_MISS >> 2 - .globl __trap_fixup_kernel_insn_tlb_miss -__trap_fixup_kernel_insn_tlb_miss: - .long __break_kernel_insn_tlb_miss - .org TBR_TT_DATA_TLB_MISS >> 2 - .globl __trap_fixup_kernel_data_tlb_miss -__trap_fixup_kernel_data_tlb_miss: - .long __break_kernel_data_tlb_miss - - .section .trap.vector - .org TBR_TT_INSTR_TLB_MISS >> 2 - .long __entry_insn_mmu_fault - .org TBR_TT_DATA_TLB_MISS >> 2 - .long __entry_data_mmu_fault -#endif - - VECTOR_SP_MMU TBR_TT_DATA_DAT_EXCEP, __entry_data_dat_fault - VECTOR_NMI TBR_TT_DECREMENT_TIMER, __entry_do_NMI - VECTOR_SOFTPROG TBR_TT_COMPOUND_EXCEP, __entry_compound_exception - VECTOR_IRQ TBR_TT_INTERRUPT_1, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_2, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_3, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_4, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_5, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_6, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_7, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_8, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_9, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_10, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_11, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_12, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_13, __entry_do_IRQ - VECTOR_IRQ TBR_TT_INTERRUPT_14, __entry_do_IRQ - VECTOR_NMI TBR_TT_INTERRUPT_15, __entry_do_NMI - - # miscellaneous user mode entry points - .section .trap.user - .org TBR_TT_TRAP0 - .rept 127 - bra __entry_uspace_softprog_interrupt - .long 0,0,0 - .endr - .org TBR_TT_BREAK - bra __entry_break - .long 0,0,0 - - .section .trap.fixup.user - .org TBR_TT_TRAP0 >> 2 - .rept 127 - .long __break_step_uspace_softprog_interrupt - .endr - .org TBR_TT_BREAK >> 2 - .long 0 - - # miscellaneous kernel mode entry points - .section .trap.kernel - .org TBR_TT_TRAP0 - bra __entry_kernel_softprog_interrupt - .org TBR_TT_TRAP1 - bra __entry_kernel_softprog_interrupt - - # trap #2 in kernel - reenable interrupts - .org TBR_TT_TRAP2 - bra __entry_kernel_external_interrupt_virtual_reenable - - # miscellaneous kernel traps - .org TBR_TT_TRAP3 - .rept 124 - bra __entry_kernel_softprog_interrupt - .long 0,0,0 - .endr - .org TBR_TT_BREAK - bra __entry_break - .long 0,0,0 - - .section .trap.fixup.kernel - .org TBR_TT_TRAP0 >> 2 - .long __break_step_kernel_softprog_interrupt - .long __break_step_kernel_softprog_interrupt - .long __break_step_kernel_external_interrupt_virtual_reenable - .rept 124 - .long __break_step_kernel_softprog_interrupt - .endr - .org TBR_TT_BREAK >> 2 - .long 0 - - # miscellaneous debug mode entry points - .section .trap.break - .org TBR_TT_BREAK - movsg bpcsr,gr30 - jmpl @(gr30,gr0) - - # miscellaneous vectors - .section .trap.vector - .org TBR_TT_TRAP0 >> 2 - .long system_call - .rept 119 - .long __entry_unsupported_trap - .endr - - # userspace atomic op emulation, traps 120-126 - .rept 7 - .long __entry_atomic_op - .endr - - .org TBR_TT_BREAK >> 2 - .long __entry_debug_exception diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S deleted file mode 100644 index dfcd263c0517..000000000000 --- a/arch/frv/kernel/entry.S +++ /dev/null @@ -1,1519 +0,0 @@ -/* entry.S: FR-V entry - * - * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * - * Entry to the kernel is "interesting": - * (1) There are no stack pointers, not even for the kernel - * (2) General Registers should not be clobbered - * (3) There are no kernel-only data registers - * (4) Since all addressing modes are wrt to a General Register, no global - * variables can be reached - * - * We deal with this by declaring that we shall kill GR28 on entering the - * kernel from userspace - * - * However, since break interrupts can interrupt the CPU even when PSR.ET==0, - * they can't rely on GR28 to be anything useful, and so need to clobber a - * separate register (GR31). Break interrupts are managed in break.S - * - * GR29 _is_ saved, and holds the current task pointer globally - * - */ - -#include <linux/linkage.h> -#include <asm/thread_info.h> -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/ptrace.h> -#include <asm/errno.h> -#include <asm/cache.h> -#include <asm/spr-regs.h> - -#define nr_syscalls ((syscall_table_size)/4) - - .section .text..entry - .balign 4 - -.macro LEDS val -# sethi.p %hi(0xe1200004),gr30 -# setlo %lo(0xe1200004),gr30 -# setlos #~\val,gr31 -# st gr31,@(gr30,gr0) -# sethi.p %hi(0xffc00100),gr30 -# setlo %lo(0xffc00100),gr30 -# sth gr0,@(gr30,gr0) -# membar -.endm - -.macro LEDS32 -# not gr31,gr31 -# sethi.p %hi(0xe1200004),gr30 -# setlo %lo(0xe1200004),gr30 -# st.p gr31,@(gr30,gr0) -# srli gr31,#16,gr31 -# sethi.p %hi(0xffc00100),gr30 -# setlo %lo(0xffc00100),gr30 -# sth gr31,@(gr30,gr0) -# membar -.endm - -############################################################################### -# -# entry point for External interrupts received whilst executing userspace code -# -############################################################################### - .globl __entry_uspace_external_interrupt - .type __entry_uspace_external_interrupt,@function -__entry_uspace_external_interrupt: - LEDS 0x6200 - sethi.p %hi(__kernel_frame0_ptr),gr28 - setlo %lo(__kernel_frame0_ptr),gr28 - ldi @(gr28,#0),gr28 - - # handle h/w single-step through exceptions - sti gr0,@(gr28,#REG__STATUS) - - .globl __entry_uspace_external_interrupt_reentry -__entry_uspace_external_interrupt_reentry: - LEDS 0x6201 - - setlos #REG__END,gr30 - dcpl gr28,gr30,#0 - - # finish building the exception frame - sti sp, @(gr28,#REG_SP) - stdi gr2, @(gr28,#REG_GR(2)) - stdi gr4, @(gr28,#REG_GR(4)) - stdi gr6, @(gr28,#REG_GR(6)) - stdi gr8, @(gr28,#REG_GR(8)) - stdi gr10,@(gr28,#REG_GR(10)) - stdi gr12,@(gr28,#REG_GR(12)) - stdi gr14,@(gr28,#REG_GR(14)) - stdi gr16,@(gr28,#REG_GR(16)) - stdi gr18,@(gr28,#REG_GR(18)) - stdi gr20,@(gr28,#REG_GR(20)) - stdi gr22,@(gr28,#REG_GR(22)) - stdi gr24,@(gr28,#REG_GR(24)) - stdi gr26,@(gr28,#REG_GR(26)) - sti gr0, @(gr28,#REG_GR(28)) - sti gr29,@(gr28,#REG_GR(29)) - stdi.p gr30,@(gr28,#REG_GR(30)) - - # set up the kernel stack pointer - ori gr28,0,sp - - movsg tbr ,gr20 - movsg psr ,gr22 - movsg pcsr,gr21 - movsg isr ,gr23 - movsg ccr ,gr24 - movsg cccr,gr25 - movsg lr ,gr26 - movsg lcr ,gr27 - - setlos.p #-1,gr4 - andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */ - andi.p gr22,#~(PSR_PS|PSR_S),gr6 - slli gr5,#1,gr5 - or gr6,gr5,gr5 - andi gr5,#~PSR_ET,gr5 - - sti gr20,@(gr28,#REG_TBR) - sti gr21,@(gr28,#REG_PC) - sti gr5 ,@(gr28,#REG_PSR) - sti gr23,@(gr28,#REG_ISR) - stdi gr24,@(gr28,#REG_CCR) - stdi gr26,@(gr28,#REG_LR) - sti gr4 ,@(gr28,#REG_SYSCALLNO) - - movsg iacc0h,gr4 - movsg iacc0l,gr5 - stdi gr4,@(gr28,#REG_IACC0) - - movsg gner0,gr4 - movsg gner1,gr5 - stdi.p gr4,@(gr28,#REG_GNER0) - - # interrupts start off fully disabled in the interrupt handler - subcc gr0,gr0,gr0,icc2 /* set Z and clear C */ - - # set up kernel global registers - sethi.p %hi(__kernel_current_task),gr5 - setlo %lo(__kernel_current_task),gr5 - sethi.p %hi(_gp),gr16 - setlo %lo(_gp),gr16 - ldi @(gr5,#0),gr29 - ldi.p @(gr29,#4),gr15 ; __current_thread_info = current->thread_info - - # make sure we (the kernel) get div-zero and misalignment exceptions - setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5 - movgs gr5,isr - - # switch to the kernel trap table - sethi.p %hi(__entry_kerneltrap_table),gr6 - setlo %lo(__entry_kerneltrap_table),gr6 - movgs gr6,tbr - - # set the return address - sethi.p %hi(__entry_return_from_user_interrupt),gr4 - setlo %lo(__entry_return_from_user_interrupt),gr4 - movgs gr4,lr - - # raise the minimum interrupt priority to 15 (NMI only) and enable exceptions - movsg psr,gr4 - - ori gr4,#PSR_PIL_14,gr4 - movgs gr4,psr - ori gr4,#PSR_PIL_14|PSR_ET,gr4 - movgs gr4,psr - - LEDS 0x6202 - bra do_IRQ - - .size __entry_uspace_external_interrupt,.-__entry_uspace_external_interrupt - -############################################################################### -# -# entry point for External interrupts received whilst executing kernel code -# - on arriving here, the following registers should already be set up: -# GR15 - current thread_info struct pointer -# GR16 - kernel GP-REL pointer -# GR29 - current task struct pointer -# TBR - kernel trap vector table -# ISR - kernel's preferred integer controls -# -############################################################################### - .globl __entry_kernel_external_interrupt - .type __entry_kernel_external_interrupt,@function -__entry_kernel_external_interrupt: - LEDS 0x6210 -// sub sp,gr15,gr31 -// LEDS32 - - # set up the stack pointer - or.p sp,gr0,gr30 - subi sp,#REG__END,sp - sti gr30,@(sp,#REG_SP) - - # handle h/w single-step through exceptions - sti gr0,@(sp,#REG__STATUS) - - .globl __entry_kernel_external_interrupt_reentry -__entry_kernel_external_interrupt_reentry: - LEDS 0x6211 - - # set up the exception frame - setlos #REG__END,gr30 - dcpl sp,gr30,#0 - - sti.p gr28,@(sp,#REG_GR(28)) - ori sp,0,gr28 - - # finish building the exception frame - stdi gr2,@(gr28,#REG_GR(2)) - stdi gr4,@(gr28,#REG_GR(4)) - stdi gr6,@(gr28,#REG_GR(6)) - stdi gr8,@(gr28,#REG_GR(8)) - stdi gr10,@(gr28,#REG_GR(10)) - stdi gr12,@(gr28,#REG_GR(12)) - stdi gr14,@(gr28,#REG_GR(14)) - stdi gr16,@(gr28,#REG_GR(16)) - stdi gr18,@(gr28,#REG_GR(18)) - stdi gr20,@(gr28,#REG_GR(20)) - stdi gr22,@(gr28,#REG_GR(22)) - stdi gr24,@(gr28,#REG_GR(24)) - stdi gr26,@(gr28,#REG_GR(26)) - sti gr29,@(gr28,#REG_GR(29)) - stdi.p gr30,@(gr28,#REG_GR(30)) - - # note virtual interrupts will be fully enabled upon return - subicc gr0,#1,gr0,icc2 /* clear Z, set C */ - - movsg tbr ,gr20 - movsg psr ,gr22 - movsg pcsr,gr21 - movsg isr ,gr23 - movsg ccr ,gr24 - movsg cccr,gr25 - movsg lr ,gr26 - movsg lcr ,gr27 - - setlos.p #-1,gr4 - andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */ - andi.p gr22,#~(PSR_PS|PSR_S),gr6 - slli gr5,#1,gr5 - or gr6,gr5,gr5 - andi.p gr5,#~PSR_ET,gr5 - - # set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel - # - for an explanation of how it works, see: Documentation/frv/atomic-ops.txt - andi gr25,#~0xc0,gr25 - - sti gr20,@(gr28,#REG_TBR) - sti gr21,@(gr28,#REG_PC) - sti gr5 ,@(gr28,#REG_PSR) - sti gr23,@(gr28,#REG_ISR) - stdi gr24,@(gr28,#REG_CCR) - stdi gr26,@(gr28,#REG_LR) - sti gr4 ,@(gr28,#REG_SYSCALLNO) - - movsg iacc0h,gr4 - movsg iacc0l,gr5 - stdi gr4,@(gr28,#REG_IACC0) - - movsg gner0,gr4 - movsg gner1,gr5 - stdi.p gr4,@(gr28,#REG_GNER0) - - # interrupts start off fully disabled in the interrupt handler - subcc gr0,gr0,gr0,icc2 /* set Z and clear C */ - - # set the return address - sethi.p %hi(__entry_return_from_kernel_interrupt),gr4 - setlo %lo(__entry_return_from_kernel_interrupt),gr4 - movgs gr4,lr - - # clear power-saving mode flags - movsg hsr0,gr4 - andi gr4,#~HSR0_PDM,gr4 - movgs gr4,hsr0 - - # raise the minimum interrupt priority to 15 (NMI only) and enable exceptions - movsg psr,gr4 - ori gr4,#PSR_PIL_14,gr4 - movgs gr4,psr - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - - LEDS 0x6212 - bra do_IRQ - - .size __entry_kernel_external_interrupt,.-__entry_kernel_external_interrupt - -############################################################################### -# -# deal with interrupts that were actually virtually disabled -# - we need to really disable them, flag the fact and return immediately -# - if you change this, you must alter break.S also -# -############################################################################### - .balign L1_CACHE_BYTES - .globl __entry_kernel_external_interrupt_virtually_disabled - .type __entry_kernel_external_interrupt_virtually_disabled,@function -__entry_kernel_external_interrupt_virtually_disabled: - movsg psr,gr30 - andi gr30,#~PSR_PIL,gr30 - ori gr30,#PSR_PIL_14,gr30 ; debugging interrupts only - movgs gr30,psr - subcc gr0,gr0,gr0,icc2 ; leave Z set, clear C - rett #0 - - .size __entry_kernel_external_interrupt_virtually_disabled,.-__entry_kernel_external_interrupt_virtually_disabled - -############################################################################### -# -# deal with re-enablement of interrupts that were pending when virtually re-enabled -# - set ICC2.C, re-enable the real interrupts and return -# - we can clear ICC2.Z because we shouldn't be here if it's not 0 [due to TIHI] -# - if you change this, you must alter break.S also -# -############################################################################### - .balign L1_CACHE_BYTES - .globl __entry_kernel_external_interrupt_virtual_reenable - .type __entry_kernel_external_interrupt_virtual_reenable,@function -__entry_kernel_external_interrupt_virtual_reenable: - movsg psr,gr30 - andi gr30,#~PSR_PIL,gr30 ; re-enable interrupts - movgs gr30,psr - subicc gr0,#1,gr0,icc2 ; clear Z, set C - rett #0 - - .size __entry_kernel_external_interrupt_virtual_reenable,.-__entry_kernel_external_interrupt_virtual_reenable - -############################################################################### -# -# entry point for Software and Progam interrupts generated whilst executing userspace code -# -############################################################################### - .globl __entry_uspace_softprog_interrupt - .type __entry_uspace_softprog_interrupt,@function - .globl __entry_uspace_handle_mmu_fault -__entry_uspace_softprog_interrupt: - LEDS 0x6000 -#ifdef CONFIG_MMU - movsg ear0,gr28 -__entry_uspace_handle_mmu_fault: - movgs gr28,scr2 -#endif - sethi.p %hi(__kernel_frame0_ptr),gr28 - setlo %lo(__kernel_frame0_ptr),gr28 - ldi @(gr28,#0),gr28 - - # handle h/w single-step through exceptions - sti gr0,@(gr28,#REG__STATUS) - - .globl __entry_uspace_softprog_interrupt_reentry -__entry_uspace_softprog_interrupt_reentry: - LEDS 0x6001 - - setlos #REG__END,gr30 - dcpl gr28,gr30,#0 - - # set up the kernel stack pointer - sti.p sp,@(gr28,#REG_SP) - ori gr28,0,sp - sti gr0,@(gr28,#REG_GR(28)) - - stdi gr20,@(gr28,#REG_GR(20)) - stdi gr22,@(gr28,#REG_GR(22)) - - movsg tbr,gr20 - movsg pcsr,gr21 - movsg psr,gr22 - - sethi.p %hi(__entry_return_from_user_exception),gr23 - setlo %lo(__entry_return_from_user_exception),gr23 - - bra __entry_common - - .size __entry_uspace_softprog_interrupt,.-__entry_uspace_softprog_interrupt - - # single-stepping was disabled on entry to a TLB handler that then faulted -#ifdef CONFIG_MMU - .globl __entry_uspace_handle_mmu_fault_sstep -__entry_uspace_handle_mmu_fault_sstep: - movgs gr28,scr2 - sethi.p %hi(__kernel_frame0_ptr),gr28 - setlo %lo(__kernel_frame0_ptr),gr28 - ldi @(gr28,#0),gr28 - - # flag single-step re-enablement - sti gr0,@(gr28,#REG__STATUS) - bra __entry_uspace_softprog_interrupt_reentry -#endif - - -############################################################################### -# -# entry point for Software and Progam interrupts generated whilst executing kernel code -# -############################################################################### - .globl __entry_kernel_softprog_interrupt - .type __entry_kernel_softprog_interrupt,@function -__entry_kernel_softprog_interrupt: - LEDS 0x6004 - -#ifdef CONFIG_MMU - movsg ear0,gr30 - movgs gr30,scr2 -#endif - - .globl __entry_kernel_handle_mmu_fault -__entry_kernel_handle_mmu_fault: - # set up the stack pointer - subi sp,#REG__END,sp - sti sp,@(sp,#REG_SP) - sti sp,@(sp,#REG_SP-4) - andi sp,#~7,sp - - # handle h/w single-step through exceptions - sti gr0,@(sp,#REG__STATUS) - - .globl __entry_kernel_softprog_interrupt_reentry -__entry_kernel_softprog_interrupt_reentry: - LEDS 0x6005 - - setlos #REG__END,gr30 - dcpl sp,gr30,#0 - - # set up the exception frame - sti.p gr28,@(sp,#REG_GR(28)) - ori sp,0,gr28 - - stdi gr20,@(gr28,#REG_GR(20)) - stdi gr22,@(gr28,#REG_GR(22)) - - ldi @(sp,#REG_SP),gr22 /* reconstruct the old SP */ - addi gr22,#REG__END,gr22 - sti gr22,@(sp,#REG_SP) - - # set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel - # - for an explanation of how it works, see: Documentation/frv/atomic-ops.txt - movsg cccr,gr20 - andi gr20,#~0xc0,gr20 - movgs gr20,cccr - - movsg tbr,gr20 - movsg pcsr,gr21 - movsg psr,gr22 - - sethi.p %hi(__entry_return_from_kernel_exception),gr23 - setlo %lo(__entry_return_from_kernel_exception),gr23 - bra __entry_common - - .size __entry_kernel_softprog_interrupt,.-__entry_kernel_softprog_interrupt - - # single-stepping was disabled on entry to a TLB handler that then faulted -#ifdef CONFIG_MMU - .globl __entry_kernel_handle_mmu_fault_sstep -__entry_kernel_handle_mmu_fault_sstep: - # set up the stack pointer - subi sp,#REG__END,sp - sti sp,@(sp,#REG_SP) - sti sp,@(sp,#REG_SP-4) - andi sp,#~7,sp - - # flag single-step re-enablement - sethi #REG__STATUS_STEP,gr30 - sti gr30,@(sp,#REG__STATUS) - bra __entry_kernel_softprog_interrupt_reentry -#endif - - -############################################################################### -# -# the rest of the kernel entry point code -# - on arriving here, the following registers should be set up: -# GR1 - kernel stack pointer -# GR7 - syscall number (trap 0 only) -# GR8-13 - syscall args (trap 0 only) -# GR20 - saved TBR -# GR21 - saved PC -# GR22 - saved PSR -# GR23 - return handler address -# GR28 - exception frame on stack -# SCR2 - saved EAR0 where applicable (clobbered by ICI & ICEF insns on FR451) -# PSR - PSR.S 1, PSR.ET 0 -# -############################################################################### - .globl __entry_common - .type __entry_common,@function -__entry_common: - LEDS 0x6008 - - # finish building the exception frame - stdi gr2,@(gr28,#REG_GR(2)) - stdi gr4,@(gr28,#REG_GR(4)) - stdi gr6,@(gr28,#REG_GR(6)) - stdi gr8,@(gr28,#REG_GR(8)) - stdi gr10,@(gr28,#REG_GR(10)) - stdi gr12,@(gr28,#REG_GR(12)) - stdi gr14,@(gr28,#REG_GR(14)) - stdi gr16,@(gr28,#REG_GR(16)) - stdi gr18,@(gr28,#REG_GR(18)) - stdi gr24,@(gr28,#REG_GR(24)) - stdi gr26,@(gr28,#REG_GR(26)) - sti gr29,@(gr28,#REG_GR(29)) - stdi gr30,@(gr28,#REG_GR(30)) - - movsg lcr ,gr27 - movsg lr ,gr26 - movgs gr23,lr - movsg cccr,gr25 - movsg ccr ,gr24 - movsg isr ,gr23 - - setlos.p #-1,gr4 - andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */ - andi.p gr22,#~(PSR_PS|PSR_S),gr6 - slli gr5,#1,gr5 - or gr6,gr5,gr5 - andi gr5,#~PSR_ET,gr5 - - sti gr20,@(gr28,#REG_TBR) - sti gr21,@(gr28,#REG_PC) - sti gr5 ,@(gr28,#REG_PSR) - sti gr23,@(gr28,#REG_ISR) - stdi gr24,@(gr28,#REG_CCR) - stdi gr26,@(gr28,#REG_LR) - sti gr4 ,@(gr28,#REG_SYSCALLNO) - - movsg iacc0h,gr4 - movsg iacc0l,gr5 - stdi gr4,@(gr28,#REG_IACC0) - - movsg gner0,gr4 - movsg gner1,gr5 - stdi.p gr4,@(gr28,#REG_GNER0) - - # set up virtual interrupt disablement - subicc gr0,#1,gr0,icc2 /* clear Z flag, set C flag */ - - # set up kernel global registers - sethi.p %hi(__kernel_current_task),gr5 - setlo %lo(__kernel_current_task),gr5 - sethi.p %hi(_gp),gr16 - setlo %lo(_gp),gr16 - ldi @(gr5,#0),gr29 - ldi @(gr29,#4),gr15 ; __current_thread_info = current->thread_info - - # switch to the kernel trap table - sethi.p %hi(__entry_kerneltrap_table),gr6 - setlo %lo(__entry_kerneltrap_table),gr6 - movgs gr6,tbr - - # make sure we (the kernel) get div-zero and misalignment exceptions - setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5 - movgs gr5,isr - - # clear power-saving mode flags - movsg hsr0,gr4 - andi gr4,#~HSR0_PDM,gr4 - movgs gr4,hsr0 - - # multiplex again using old TBR as a guide - setlos.p #TBR_TT,gr3 - sethi %hi(__entry_vector_table),gr6 - and.p gr20,gr3,gr5 - setlo %lo(__entry_vector_table),gr6 - srli gr5,#2,gr5 - ld @(gr5,gr6),gr5 - - LEDS 0x6009 - jmpl @(gr5,gr0) - - - .size __entry_common,.-__entry_common - -############################################################################### -# -# handle instruction MMU fault -# -############################################################################### -#ifdef CONFIG_MMU - .globl __entry_insn_mmu_fault -__entry_insn_mmu_fault: - LEDS 0x6010 - setlos #0,gr8 - movsg esr0,gr9 - movsg scr2,gr10 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - - sethi.p %hi(do_page_fault),gr5 - setlo %lo(do_page_fault),gr5 - jmpl @(gr5,gr0) ; call do_page_fault(0,esr0,ear0) -#endif - - -############################################################################### -# -# handle instruction access error -# -############################################################################### - .globl __entry_insn_access_error -__entry_insn_access_error: - LEDS 0x6011 - sethi.p %hi(insn_access_error),gr5 - setlo %lo(insn_access_error),gr5 - movsg esfr1,gr8 - movsg epcr0,gr9 - movsg esr0,gr10 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call insn_access_error(esfr1,epcr0,esr0) - -############################################################################### -# -# handle various instructions of dubious legality -# -############################################################################### - .globl __entry_unsupported_trap - .globl __entry_illegal_instruction - .globl __entry_privileged_instruction - .globl __entry_debug_exception -__entry_unsupported_trap: - subi gr21,#4,gr21 - sti gr21,@(gr28,#REG_PC) -__entry_illegal_instruction: -__entry_privileged_instruction: -__entry_debug_exception: - LEDS 0x6012 - sethi.p %hi(illegal_instruction),gr5 - setlo %lo(illegal_instruction),gr5 - movsg esfr1,gr8 - movsg epcr0,gr9 - movsg esr0,gr10 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call ill_insn(esfr1,epcr0,esr0) - -############################################################################### -# -# handle atomic operation emulation for userspace -# -############################################################################### - .globl __entry_atomic_op -__entry_atomic_op: - LEDS 0x6012 - sethi.p %hi(atomic_operation),gr5 - setlo %lo(atomic_operation),gr5 - movsg esfr1,gr8 - movsg epcr0,gr9 - movsg esr0,gr10 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call atomic_operation(esfr1,epcr0,esr0) - -############################################################################### -# -# handle media exception -# -############################################################################### - .globl __entry_media_exception -__entry_media_exception: - LEDS 0x6013 - sethi.p %hi(media_exception),gr5 - setlo %lo(media_exception),gr5 - movsg msr0,gr8 - movsg msr1,gr9 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call media_excep(msr0,msr1) - -############################################################################### -# -# handle data MMU fault -# handle data DAT fault (write-protect exception) -# -############################################################################### -#ifdef CONFIG_MMU - .globl __entry_data_mmu_fault -__entry_data_mmu_fault: - .globl __entry_data_dat_fault -__entry_data_dat_fault: - LEDS 0x6014 - setlos #1,gr8 - movsg esr0,gr9 - movsg scr2,gr10 ; saved EAR0 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - - sethi.p %hi(do_page_fault),gr5 - setlo %lo(do_page_fault),gr5 - jmpl @(gr5,gr0) ; call do_page_fault(1,esr0,ear0) -#endif - -############################################################################### -# -# handle data and instruction access exceptions -# -############################################################################### - .globl __entry_insn_access_exception - .globl __entry_data_access_exception -__entry_insn_access_exception: -__entry_data_access_exception: - LEDS 0x6016 - sethi.p %hi(memory_access_exception),gr5 - setlo %lo(memory_access_exception),gr5 - movsg esr0,gr8 - movsg scr2,gr9 ; saved EAR0 - movsg epcr0,gr10 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call memory_access_error(esr0,ear0,epcr0) - -############################################################################### -# -# handle data access error -# -############################################################################### - .globl __entry_data_access_error -__entry_data_access_error: - LEDS 0x6016 - sethi.p %hi(data_access_error),gr5 - setlo %lo(data_access_error),gr5 - movsg esfr1,gr8 - movsg esr15,gr9 - movsg ear15,gr10 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call data_access_error(esfr1,esr15,ear15) - -############################################################################### -# -# handle data store error -# -############################################################################### - .globl __entry_data_store_error -__entry_data_store_error: - LEDS 0x6017 - sethi.p %hi(data_store_error),gr5 - setlo %lo(data_store_error),gr5 - movsg esfr1,gr8 - movsg esr14,gr9 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call data_store_error(esfr1,esr14) - -############################################################################### -# -# handle division exception -# -############################################################################### - .globl __entry_division_exception -__entry_division_exception: - LEDS 0x6018 - sethi.p %hi(division_exception),gr5 - setlo %lo(division_exception),gr5 - movsg esfr1,gr8 - movsg esr0,gr9 - movsg isr,gr10 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call div_excep(esfr1,esr0,isr) - -############################################################################### -# -# handle compound exception -# -############################################################################### - .globl __entry_compound_exception -__entry_compound_exception: - LEDS 0x6019 - sethi.p %hi(compound_exception),gr5 - setlo %lo(compound_exception),gr5 - movsg esfr1,gr8 - movsg esr0,gr9 - movsg esr14,gr10 - movsg esr15,gr11 - movsg msr0,gr12 - movsg msr1,gr13 - - # now that we've accessed the exception regs, we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - jmpl @(gr5,gr0) ; call comp_excep(esfr1,esr0,esr14,esr15,msr0,msr1) - -############################################################################### -# -# handle interrupts and NMIs -# -############################################################################### - .globl __entry_do_IRQ -__entry_do_IRQ: - LEDS 0x6020 - - # we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - bra do_IRQ - - .globl __entry_do_NMI -__entry_do_NMI: - LEDS 0x6021 - - # we can enable exceptions - movsg psr,gr4 - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - bra do_NMI - -############################################################################### -# -# the return path for a newly forked child process -# - __switch_to() saved the old current pointer in GR8 for us -# -############################################################################### - .globl ret_from_fork -ret_from_fork: - LEDS 0x6100 - call schedule_tail - - # fork & co. return 0 to child - setlos.p #0,gr8 - bra __syscall_exit - - .globl ret_from_kernel_thread -ret_from_kernel_thread: - lddi.p @(gr28,#REG_GR(8)),gr20 - call schedule_tail - calll.p @(gr21,gr0) - or gr20,gr20,gr8 - bra __syscall_exit - -################################################################################################### -# -# Return to user mode is not as complex as all this looks, -# but we want the default path for a system call return to -# go as quickly as possible which is why some of this is -# less clear than it otherwise should be. -# -################################################################################################### - .balign L1_CACHE_BYTES - .globl system_call -system_call: - LEDS 0x6101 - movsg psr,gr4 ; enable exceptions - ori gr4,#PSR_ET,gr4 - movgs gr4,psr - - sti gr7,@(gr28,#REG_SYSCALLNO) - sti.p gr8,@(gr28,#REG_ORIG_GR8) - - subicc gr7,#nr_syscalls,gr0,icc0 - bnc icc0,#0,__syscall_badsys - - ldi @(gr15,#TI_FLAGS),gr4 - andicc gr4,#_TIF_SYSCALL_TRACE,gr0,icc0 - bne icc0,#0,__syscall_trace_entry - -__syscall_call: - slli.p gr7,#2,gr7 - sethi %hi(sys_call_table),gr5 - setlo %lo(sys_call_table),gr5 - ld @(gr5,gr7),gr4 - calll @(gr4,gr0) - - -############################################################################### -# -# return to interrupted process -# -############################################################################### -__syscall_exit: - LEDS 0x6300 - - # keep current PSR in GR23 - movsg psr,gr23 - - ldi @(gr28,#REG_PSR),gr22 - - sti.p gr8,@(gr28,#REG_GR(8)) ; save return value - - # rebuild saved psr - execve will change it for init/main.c - srli gr22,#1,gr5 - andi.p gr22,#~PSR_PS,gr22 - andi gr5,#PSR_PS,gr5 - or gr5,gr22,gr22 - ori.p gr22,#PSR_S,gr22 - - # make sure we don't miss an interrupt setting need_resched or sigpending between - # sampling and the RETT - ori gr23,#PSR_PIL_14,gr23 - movgs gr23,psr - - ldi @(gr15,#TI_FLAGS),gr4 - andicc gr4,#_TIF_ALLWORK_MASK,gr0,icc0 - bne icc0,#0,__syscall_exit_work - - # restore all registers and return -__entry_return_direct: - LEDS 0x6301 - - andi gr22,#~PSR_ET,gr22 - movgs gr22,psr - - ldi @(gr28,#REG_ISR),gr23 - lddi @(gr28,#REG_CCR),gr24 - lddi @(gr28,#REG_LR) ,gr26 - ldi @(gr28,#REG_PC) ,gr21 - ldi @(gr28,#REG_TBR),gr20 - - movgs gr20,tbr - movgs gr21,pcsr - movgs gr23,isr - movgs gr24,ccr - movgs gr25,cccr - movgs gr26,lr - movgs gr27,lcr - - lddi @(gr28,#REG_GNER0),gr4 - movgs gr4,gner0 - movgs gr5,gner1 - - lddi @(gr28,#REG_IACC0),gr4 - movgs gr4,iacc0h - movgs gr5,iacc0l - - lddi @(gr28,#REG_GR(4)) ,gr4 - lddi @(gr28,#REG_GR(6)) ,gr6 - lddi @(gr28,#REG_GR(8)) ,gr8 - lddi @(gr28,#REG_GR(10)),gr10 - lddi @(gr28,#REG_GR(12)),gr12 - lddi @(gr28,#REG_GR(14)),gr14 - lddi @(gr28,#REG_GR(16)),gr16 - lddi @(gr28,#REG_GR(18)),gr18 - lddi @(gr28,#REG_GR(20)),gr20 - lddi @(gr28,#REG_GR(22)),gr22 - lddi @(gr28,#REG_GR(24)),gr24 - lddi @(gr28,#REG_GR(26)),gr26 - ldi @(gr28,#REG_GR(29)),gr29 - lddi @(gr28,#REG_GR(30)),gr30 - - # check to see if a debugging return is required - LEDS 0x67f0 - movsg ccr,gr2 - ldi @(gr28,#REG__STATUS),gr3 - andicc gr3,#REG__STATUS_STEP,gr0,icc0 - bne icc0,#0,__entry_return_singlestep - movgs gr2,ccr - - ldi @(gr28,#REG_SP) ,sp - lddi @(gr28,#REG_GR(2)) ,gr2 - ldi @(gr28,#REG_GR(28)),gr28 - - LEDS 0x67fe -// movsg pcsr,gr31 -// LEDS32 - -#if 0 - # store the current frame in the workram on the FR451 - movgs gr28,scr2 - sethi.p %hi(0xfe800000),gr28 - setlo %lo(0xfe800000),gr28 - - stdi gr2,@(gr28,#REG_GR(2)) - stdi gr4,@(gr28,#REG_GR(4)) - stdi gr6,@(gr28,#REG_GR(6)) - stdi gr8,@(gr28,#REG_GR(8)) - stdi gr10,@(gr28,#REG_GR(10)) - stdi gr12,@(gr28,#REG_GR(12)) - stdi gr14,@(gr28,#REG_GR(14)) - stdi gr16,@(gr28,#REG_GR(16)) - stdi gr18,@(gr28,#REG_GR(18)) - stdi gr24,@(gr28,#REG_GR(24)) - stdi gr26,@(gr28,#REG_GR(26)) - sti gr29,@(gr28,#REG_GR(29)) - stdi gr30,@(gr28,#REG_GR(30)) - - movsg tbr ,gr30 - sti gr30,@(gr28,#REG_TBR) - movsg pcsr,gr30 - sti gr30,@(gr28,#REG_PC) - movsg psr ,gr30 - sti gr30,@(gr28,#REG_PSR) - movsg isr ,gr30 - sti gr30,@(gr28,#REG_ISR) - movsg ccr ,gr30 - movsg cccr,gr31 - stdi gr30,@(gr28,#REG_CCR) - movsg lr ,gr30 - movsg lcr ,gr31 - stdi gr30,@(gr28,#REG_LR) - sti gr0 ,@(gr28,#REG_SYSCALLNO) - movsg scr2,gr28 -#endif - - rett #0 - - # return via break.S -__entry_return_singlestep: - movgs gr2,ccr - lddi @(gr28,#REG_GR(2)) ,gr2 - ldi @(gr28,#REG_SP) ,sp - ldi @(gr28,#REG_GR(28)),gr28 - LEDS 0x67ff - break - .globl __entry_return_singlestep_breaks_here -__entry_return_singlestep_breaks_here: - nop - - -############################################################################### -# -# return to a process interrupted in kernel space -# - we need to consider preemption if that is enabled -# -############################################################################### - .balign L1_CACHE_BYTES -__entry_return_from_kernel_exception: - LEDS 0x6302 - movsg psr,gr23 - ori gr23,#PSR_PIL_14,gr23 - movgs gr23,psr - bra __entry_return_direct - - .balign L1_CACHE_BYTES -__entry_return_from_kernel_interrupt: - LEDS 0x6303 - movsg psr,gr23 - ori gr23,#PSR_PIL_14,gr23 - movgs gr23,psr - -#ifdef CONFIG_PREEMPT - ldi @(gr15,#TI_PRE_COUNT),gr5 - subicc gr5,#0,gr0,icc0 - beq icc0,#0,__entry_return_direct - - subcc gr0,gr0,gr0,icc2 /* set Z and clear C */ - call preempt_schedule_irq -#endif - bra __entry_return_direct - - -############################################################################### -# -# perform work that needs to be done immediately before resumption -# -############################################################################### - .globl __entry_return_from_user_exception - .balign L1_CACHE_BYTES -__entry_return_from_user_exception: - LEDS 0x6501 - -__entry_resume_userspace: - # make sure we don't miss an interrupt setting need_resched or sigpending between - # sampling and the RETT - movsg psr,gr23 - ori gr23,#PSR_PIL_14,gr23 - movgs gr23,psr - -__entry_return_from_user_interrupt: - LEDS 0x6402 - ldi @(gr15,#TI_FLAGS),gr4 - andicc gr4,#_TIF_WORK_MASK,gr0,icc0 - beq icc0,#1,__entry_return_direct - -__entry_work_pending: - LEDS 0x6404 - andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0 - beq icc0,#1,__entry_work_notifysig - -__entry_work_resched: - LEDS 0x6408 - movsg psr,gr23 - andi gr23,#~PSR_PIL,gr23 - movgs gr23,psr - call schedule - movsg psr,gr23 - ori gr23,#PSR_PIL_14,gr23 - movgs gr23,psr - - LEDS 0x6401 - ldi @(gr15,#TI_FLAGS),gr4 - andicc gr4,#_TIF_WORK_MASK,gr0,icc0 - beq icc0,#1,__entry_return_direct - andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0 - bne icc0,#1,__entry_work_resched - -__entry_work_notifysig: - LEDS 0x6410 - ori.p gr4,#0,gr8 - call do_notify_resume - bra __entry_resume_userspace - - # perform syscall entry tracing -__syscall_trace_entry: - LEDS 0x6320 - call syscall_trace_entry - - lddi.p @(gr28,#REG_GR(8)) ,gr8 - ori gr8,#0,gr7 ; syscall_trace_entry() returned new syscallno - lddi @(gr28,#REG_GR(10)),gr10 - lddi.p @(gr28,#REG_GR(12)),gr12 - - subicc gr7,#nr_syscalls,gr0,icc0 - bnc icc0,#0,__syscall_badsys - bra __syscall_call - - # perform syscall exit tracing -__syscall_exit_work: - LEDS 0x6340 - andicc gr22,#PSR_PS,gr0,icc1 ; don't handle on return to kernel mode - andicc.p gr4,#_TIF_SYSCALL_TRACE,gr0,icc0 - bne icc1,#0,__entry_return_direct - beq icc0,#1,__entry_work_pending - - movsg psr,gr23 - andi gr23,#~PSR_PIL,gr23 ; could let syscall_trace_exit() call schedule() - movgs gr23,psr - - call syscall_trace_exit - bra __entry_resume_userspace - -__syscall_badsys: - LEDS 0x6380 - setlos #-ENOSYS,gr8 - sti gr8,@(gr28,#REG_GR(8)) ; save return value - bra __entry_resume_userspace - - -############################################################################### -# -# syscall vector table -# -############################################################################### - .section .rodata -ALIGN - .globl sys_call_table -sys_call_table: - .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */ - .long sys_exit - .long sys_fork - .long sys_read - .long sys_write - .long sys_open /* 5 */ - .long sys_close - .long sys_waitpid - .long sys_creat - .long sys_link - .long sys_unlink /* 10 */ - .long sys_execve - .long sys_chdir - .long sys_time - .long sys_mknod - .long sys_chmod /* 15 */ - .long sys_lchown16 - .long sys_ni_syscall /* old break syscall holder */ - .long sys_stat - .long sys_lseek - .long sys_getpid /* 20 */ - .long sys_mount - .long sys_oldumount - .long sys_setuid16 - .long sys_getuid16 - .long sys_ni_syscall // sys_stime /* 25 */ - .long sys_ptrace - .long sys_alarm - .long sys_fstat - .long sys_pause - .long sys_utime /* 30 */ - .long sys_ni_syscall /* old stty syscall holder */ - .long sys_ni_syscall /* old gtty syscall holder */ - .long sys_access - .long sys_nice - .long sys_ni_syscall /* 35 */ /* old ftime syscall holder */ - .long sys_sync - .long sys_kill - .long sys_rename - .long sys_mkdir - .long sys_rmdir /* 40 */ - .long sys_dup - .long sys_pipe - .long sys_times - .long sys_ni_syscall /* old prof syscall holder */ - .long sys_brk /* 45 */ - .long sys_setgid16 - .long sys_getgid16 - .long sys_ni_syscall // sys_signal - .long sys_geteuid16 - .long sys_getegid16 /* 50 */ - .long sys_acct - .long sys_umount /* recycled never used phys( */ - .long sys_ni_syscall /* old lock syscall holder */ - .long sys_ioctl - .long sys_fcntl /* 55 */ - .long sys_ni_syscall /* old mpx syscall holder */ - .long sys_setpgid - .long sys_ni_syscall /* old ulimit syscall holder */ - .long sys_ni_syscall /* old old uname syscall */ - .long sys_umask /* 60 */ - .long sys_chroot - .long sys_ustat - .long sys_dup2 - .long sys_getppid - .long sys_getpgrp /* 65 */ - .long sys_setsid - .long sys_sigaction - .long sys_ni_syscall // sys_sgetmask - .long sys_ni_syscall // sys_ssetmask - .long sys_setreuid16 /* 70 */ - .long sys_setregid16 - .long sys_sigsuspend - .long sys_ni_syscall // sys_sigpending - .long sys_sethostname - .long sys_setrlimit /* 75 */ - .long sys_ni_syscall // sys_old_getrlimit - .long sys_getrusage - .long sys_gettimeofday - .long sys_settimeofday - .long sys_getgroups16 /* 80 */ - .long sys_setgroups16 - .long sys_ni_syscall /* old_select slot */ - .long sys_symlink - .long sys_lstat - .long sys_readlink /* 85 */ - .long sys_uselib - .long sys_swapon - .long sys_reboot - .long sys_ni_syscall // old_readdir - .long sys_ni_syscall /* 90 */ /* old_mmap slot */ - .long sys_munmap - .long sys_truncate - .long sys_ftruncate - .long sys_fchmod - .long sys_fchown16 /* 95 */ - .long sys_getpriority - .long sys_setpriority - .long sys_ni_syscall /* old profil syscall holder */ - .long sys_statfs - .long sys_fstatfs /* 100 */ - .long sys_ni_syscall /* ioperm for i386 */ - .long sys_socketcall - .long sys_syslog - .long sys_setitimer - .long sys_getitimer /* 105 */ - .long sys_newstat - .long sys_newlstat - .long sys_newfstat - .long sys_ni_syscall /* obsolete olduname( syscall */ - .long sys_ni_syscall /* iopl for i386 */ /* 110 */ - .long sys_vhangup - .long sys_ni_syscall /* obsolete idle( syscall */ - .long sys_ni_syscall /* vm86old for i386 */ - .long sys_wait4 - .long sys_swapoff /* 115 */ - .long sys_sysinfo - .long sys_ipc - .long sys_fsync - .long sys_sigreturn - .long sys_clone /* 120 */ - .long sys_setdomainname - .long sys_newuname - .long sys_ni_syscall /* old "cacheflush" */ - .long sys_adjtimex - .long sys_mprotect /* 125 */ - .long sys_sigprocmask - .long sys_ni_syscall /* old "create_module" */ - .long sys_init_module - .long sys_delete_module - .long sys_ni_syscall /* old "get_kernel_syms" */ - .long sys_quotactl - .long sys_getpgid - .long sys_fchdir - .long sys_bdflush - .long sys_sysfs /* 135 */ - .long sys_personality - .long sys_ni_syscall /* for afs_syscall */ - .long sys_setfsuid16 - .long sys_setfsgid16 - .long sys_llseek /* 140 */ - .long sys_getdents - .long sys_select - .long sys_flock - .long sys_msync - .long sys_readv /* 145 */ - .long sys_writev - .long sys_getsid - .long sys_fdatasync - .long sys_sysctl - .long sys_mlock /* 150 */ - .long sys_munlock - .long sys_mlockall - .long sys_munlockall - .long sys_sched_setparam - .long sys_sched_getparam /* 155 */ - .long sys_sched_setscheduler - .long sys_sched_getscheduler - .long sys_sched_yield - .long sys_sched_get_priority_max - .long sys_sched_get_priority_min /* 160 */ - .long sys_sched_rr_get_interval - .long sys_nanosleep - .long sys_mremap - .long sys_setresuid16 - .long sys_getresuid16 /* 165 */ - .long sys_ni_syscall /* for vm86 */ - .long sys_ni_syscall /* Old sys_query_module */ - .long sys_poll - .long sys_ni_syscall /* Old nfsservctl */ - .long sys_setresgid16 /* 170 */ - .long sys_getresgid16 - .long sys_prctl - .long sys_rt_sigreturn - .long sys_rt_sigaction - .long sys_rt_sigprocmask /* 175 */ - .long sys_rt_sigpending - .long sys_rt_sigtimedwait - .long sys_rt_sigqueueinfo - .long sys_rt_sigsuspend - .long sys_pread64 /* 180 */ - .long sys_pwrite64 - .long sys_chown16 - .long sys_getcwd - .long sys_capget - .long sys_capset /* 185 */ - .long sys_sigaltstack - .long sys_sendfile - .long sys_ni_syscall /* streams1 */ - .long sys_ni_syscall /* streams2 */ - .long sys_vfork /* 190 */ - .long sys_getrlimit - .long sys_mmap2 - .long sys_truncate64 - .long sys_ftruncate64 - .long sys_stat64 /* 195 */ - .long sys_lstat64 - .long sys_fstat64 - .long sys_lchown - .long sys_getuid - .long sys_getgid /* 200 */ - .long sys_geteuid - .long sys_getegid - .long sys_setreuid - .long sys_setregid - .long sys_getgroups /* 205 */ - .long sys_setgroups - .long sys_fchown - .long sys_setresuid - .long sys_getresuid - .long sys_setresgid /* 210 */ - .long sys_getresgid - .long sys_chown - .long sys_setuid - .long sys_setgid - .long sys_setfsuid /* 215 */ - .long sys_setfsgid - .long sys_pivot_root - .long sys_mincore - .long sys_madvise - .long sys_getdents64 /* 220 */ - .long sys_fcntl64 - .long sys_ni_syscall /* reserved for TUX */ - .long sys_ni_syscall /* Reserved for Security */ - .long sys_gettid - .long sys_readahead /* 225 */ - .long sys_setxattr - .long sys_lsetxattr - .long sys_fsetxattr - .long sys_getxattr - .long sys_lgetxattr /* 230 */ - .long sys_fgetxattr - .long sys_listxattr - .long sys_llistxattr - .long sys_flistxattr - .long sys_removexattr /* 235 */ - .long sys_lremovexattr - .long sys_fremovexattr - .long sys_tkill - .long sys_sendfile64 - .long sys_futex /* 240 */ - .long sys_sched_setaffinity - .long sys_sched_getaffinity - .long sys_ni_syscall //sys_set_thread_area - .long sys_ni_syscall //sys_get_thread_area - .long sys_io_setup /* 245 */ - .long sys_io_destroy - .long sys_io_getevents - .long sys_io_submit - .long sys_io_cancel - .long sys_fadvise64 /* 250 */ - .long sys_ni_syscall - .long sys_exit_group - .long sys_lookup_dcookie - .long sys_epoll_create - .long sys_epoll_ctl /* 255 */ - .long sys_epoll_wait - .long sys_remap_file_pages - .long sys_set_tid_address - .long sys_timer_create - .long sys_timer_settime /* 260 */ - .long sys_timer_gettime - .long sys_timer_getoverrun - .long sys_timer_delete - .long sys_clock_settime - .long sys_clock_gettime /* 265 */ - .long sys_clock_getres - .long sys_clock_nanosleep - .long sys_statfs64 - .long sys_fstatfs64 - .long sys_tgkill /* 270 */ - .long sys_utimes - .long sys_fadvise64_64 - .long sys_ni_syscall /* sys_vserver */ - .long sys_mbind - .long sys_get_mempolicy - .long sys_set_mempolicy - .long sys_mq_open - .long sys_mq_unlink - .long sys_mq_timedsend - .long sys_mq_timedreceive /* 280 */ - .long sys_mq_notify - .long sys_mq_getsetattr - .long sys_ni_syscall /* reserved for kexec */ - .long sys_waitid - .long sys_ni_syscall /* 285 */ /* available */ - .long sys_add_key - .long sys_request_key - .long sys_keyctl - .long sys_ioprio_set - .long sys_ioprio_get /* 290 */ - .long sys_inotify_init - .long sys_inotify_add_watch - .long sys_inotify_rm_watch - .long sys_migrate_pages - .long sys_openat /* 295 */ - .long sys_mkdirat - .long sys_mknodat - .long sys_fchownat - .long sys_futimesat - .long sys_fstatat64 /* 300 */ - .long sys_unlinkat - .long sys_renameat - .long sys_linkat - .long sys_symlinkat - .long sys_readlinkat /* 305 */ - .long sys_fchmodat - .long sys_faccessat - .long sys_pselect6 - .long sys_ppoll - .long sys_unshare /* 310 */ - .long sys_set_robust_list - .long sys_get_robust_list - .long sys_splice - .long sys_sync_file_range - .long sys_tee /* 315 */ - .long sys_vmsplice - .long sys_move_pages - .long sys_getcpu - .long sys_epoll_pwait - .long sys_utimensat /* 320 */ - .long sys_signalfd - .long sys_timerfd_create - .long sys_eventfd - .long sys_fallocate - .long sys_timerfd_settime /* 325 */ - .long sys_timerfd_gettime - .long sys_signalfd4 - .long sys_eventfd2 - .long sys_epoll_create1 - .long sys_dup3 /* 330 */ - .long sys_pipe2 - .long sys_inotify_init1 - .long sys_preadv - .long sys_pwritev - .long sys_rt_tgsigqueueinfo /* 335 */ - .long sys_perf_event_open - .long sys_setns - -syscall_table_size = (. - sys_call_table) diff --git a/arch/frv/kernel/frv_ksyms.c b/arch/frv/kernel/frv_ksyms.c deleted file mode 100644 index 6ea430d58149..000000000000 --- a/arch/frv/kernel/frv_ksyms.c +++ /dev/null @@ -1,109 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/module.h> -#include <linux/linkage.h> -#include <linux/sched.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/user.h> -#include <linux/elfcore.h> -#include <linux/in6.h> -#include <linux/interrupt.h> - -#include <asm/setup.h> -#include <asm/pgalloc.h> -#include <asm/irq.h> -#include <asm/io.h> -#include <asm/checksum.h> -#include <asm/hardirq.h> -#include <asm/cacheflush.h> - -extern long __memcpy_user(void *dst, const void *src, size_t count); -extern long __memset_user(void *dst, const void *src, size_t count); - -/* platform dependent support */ - -EXPORT_SYMBOL(__ioremap); -EXPORT_SYMBOL(iounmap); - -EXPORT_SYMBOL(ip_fast_csum); - -#if 0 -EXPORT_SYMBOL(local_irq_count); -EXPORT_SYMBOL(local_bh_count); -#endif - -EXPORT_SYMBOL(__res_bus_clock_speed_HZ); -EXPORT_SYMBOL(__page_offset); -EXPORT_SYMBOL(__memcpy_user); -EXPORT_SYMBOL(__memset_user); -EXPORT_SYMBOL(frv_dcache_writeback); -EXPORT_SYMBOL(frv_cache_invalidate); -EXPORT_SYMBOL(frv_icache_invalidate); -EXPORT_SYMBOL(frv_cache_wback_inv); - -#ifndef CONFIG_MMU -EXPORT_SYMBOL(memory_start); -EXPORT_SYMBOL(memory_end); -#endif - -EXPORT_SYMBOL(__debug_bug_trap); - -/* The following are special because they're not called - explicitly (the C compiler generates them). Fortunately, - their interface isn't gonna change any time soon now, so - it's OK to leave it out of version control. */ -EXPORT_SYMBOL(memcpy); -EXPORT_SYMBOL(memset); - -EXPORT_SYMBOL(__outsl_ns); -EXPORT_SYMBOL(__insl_ns); - -#ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS -EXPORT_SYMBOL(__xchg_32); -EXPORT_SYMBOL(__cmpxchg_32); -#endif -EXPORT_SYMBOL(atomic64_add_return); -EXPORT_SYMBOL(atomic64_sub_return); -EXPORT_SYMBOL(__xchg_64); -EXPORT_SYMBOL(__cmpxchg_64); - -EXPORT_SYMBOL(__debug_bug_printk); -EXPORT_SYMBOL(__delay_loops_MHz); - -/* - * libgcc functions - functions that are used internally by the - * compiler... (prototypes are not correct though, but that - * doesn't really matter since they're not versioned). - */ -extern void __gcc_bcmp(void); -extern void __ashldi3(void); -extern void __ashrdi3(void); -extern void __cmpdi2(void); -extern void __divdi3(void); -extern void __lshrdi3(void); -extern void __moddi3(void); -extern void __muldi3(void); -extern void __mulll(void); -extern void __umulll(void); -extern void __negdi2(void); -extern void __ucmpdi2(void); -extern void __udivdi3(void); -extern void __udivmoddi4(void); -extern void __umoddi3(void); - - /* gcc lib functions */ -//EXPORT_SYMBOL(__gcc_bcmp); -EXPORT_SYMBOL(__ashldi3); -EXPORT_SYMBOL(__ashrdi3); -//EXPORT_SYMBOL(__cmpdi2); -//EXPORT_SYMBOL(__divdi3); -EXPORT_SYMBOL(__lshrdi3); -//EXPORT_SYMBOL(__moddi3); -EXPORT_SYMBOL(__muldi3); -EXPORT_SYMBOL(__mulll); -EXPORT_SYMBOL(__umulll); -EXPORT_SYMBOL(__negdi2); -EXPORT_SYMBOL(__ucmpdi2); -//EXPORT_SYMBOL(__udivdi3); -//EXPORT_SYMBOL(__udivmoddi4); -//EXPORT_SYMBOL(__umoddi3); diff --git a/arch/frv/kernel/futex.c b/arch/frv/kernel/futex.c deleted file mode 100644 index 37f7b2bf7f73..000000000000 --- a/arch/frv/kernel/futex.c +++ /dev/null @@ -1,223 +0,0 @@ -/* futex.c: futex operations - * - * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/futex.h> -#include <linux/uaccess.h> -#include <asm/futex.h> -#include <asm/errno.h> - -/* - * the various futex operations; MMU fault checking is ignored under no-MMU - * conditions - */ -static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr, int *_oldval) -{ - int oldval, ret; - - asm("0: \n" - " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */ - " ckeq icc3,cc7 \n" - "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */ - " orcr cc7,cc7,cc3 \n" /* set CC3 to true */ - "2: cst.p %3,%M0 ,cc3,#1 \n" - " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */ - " beq icc3,#0,0b \n" - " setlos 0,%2 \n" - "3: \n" - ".subsection 2 \n" - "4: setlos %5,%2 \n" - " bra 3b \n" - ".previous \n" - ".section __ex_table,\"a\" \n" - " .balign 8 \n" - " .long 1b,4b \n" - " .long 2b,4b \n" - ".previous" - : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg) - : "3"(oparg), "i"(-EFAULT) - : "memory", "cc7", "cc3", "icc3" - ); - - *_oldval = oldval; - return ret; -} - -static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr, int *_oldval) -{ - int oldval, ret; - - asm("0: \n" - " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */ - " ckeq icc3,cc7 \n" - "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */ - " orcr cc7,cc7,cc3 \n" /* set CC3 to true */ - " add %1,%3,%3 \n" - "2: cst.p %3,%M0 ,cc3,#1 \n" - " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */ - " beq icc3,#0,0b \n" - " setlos 0,%2 \n" - "3: \n" - ".subsection 2 \n" - "4: setlos %5,%2 \n" - " bra 3b \n" - ".previous \n" - ".section __ex_table,\"a\" \n" - " .balign 8 \n" - " .long 1b,4b \n" - " .long 2b,4b \n" - ".previous" - : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg) - : "3"(oparg), "i"(-EFAULT) - : "memory", "cc7", "cc3", "icc3" - ); - - *_oldval = oldval; - return ret; -} - -static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr, int *_oldval) -{ - int oldval, ret; - - asm("0: \n" - " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */ - " ckeq icc3,cc7 \n" - "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */ - " orcr cc7,cc7,cc3 \n" /* set CC3 to true */ - " or %1,%3,%3 \n" - "2: cst.p %3,%M0 ,cc3,#1 \n" - " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */ - " beq icc3,#0,0b \n" - " setlos 0,%2 \n" - "3: \n" - ".subsection 2 \n" - "4: setlos %5,%2 \n" - " bra 3b \n" - ".previous \n" - ".section __ex_table,\"a\" \n" - " .balign 8 \n" - " .long 1b,4b \n" - " .long 2b,4b \n" - ".previous" - : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg) - : "3"(oparg), "i"(-EFAULT) - : "memory", "cc7", "cc3", "icc3" - ); - - *_oldval = oldval; - return ret; -} - -static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr, int *_oldval) -{ - int oldval, ret; - - asm("0: \n" - " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */ - " ckeq icc3,cc7 \n" - "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */ - " orcr cc7,cc7,cc3 \n" /* set CC3 to true */ - " and %1,%3,%3 \n" - "2: cst.p %3,%M0 ,cc3,#1 \n" - " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */ - " beq icc3,#0,0b \n" - " setlos 0,%2 \n" - "3: \n" - ".subsection 2 \n" - "4: setlos %5,%2 \n" - " bra 3b \n" - ".previous \n" - ".section __ex_table,\"a\" \n" - " .balign 8 \n" - " .long 1b,4b \n" - " .long 2b,4b \n" - ".previous" - : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg) - : "3"(oparg), "i"(-EFAULT) - : "memory", "cc7", "cc3", "icc3" - ); - - *_oldval = oldval; - return ret; -} - -static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr, int *_oldval) -{ - int oldval, ret; - - asm("0: \n" - " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */ - " ckeq icc3,cc7 \n" - "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */ - " orcr cc7,cc7,cc3 \n" /* set CC3 to true */ - " xor %1,%3,%3 \n" - "2: cst.p %3,%M0 ,cc3,#1 \n" - " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */ - " beq icc3,#0,0b \n" - " setlos 0,%2 \n" - "3: \n" - ".subsection 2 \n" - "4: setlos %5,%2 \n" - " bra 3b \n" - ".previous \n" - ".section __ex_table,\"a\" \n" - " .balign 8 \n" - " .long 1b,4b \n" - " .long 2b,4b \n" - ".previous" - : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg) - : "3"(oparg), "i"(-EFAULT) - : "memory", "cc7", "cc3", "icc3" - ); - - *_oldval = oldval; - return ret; -} - -/*****************************************************************************/ -/* - * do the futex operations - */ -int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr) -{ - int oldval = 0, ret; - - pagefault_disable(); - - switch (op) { - case FUTEX_OP_SET: - ret = atomic_futex_op_xchg_set(oparg, uaddr, &oldval); - break; - case FUTEX_OP_ADD: - ret = atomic_futex_op_xchg_add(oparg, uaddr, &oldval); - break; - case FUTEX_OP_OR: - ret = atomic_futex_op_xchg_or(oparg, uaddr, &oldval); - break; - case FUTEX_OP_ANDN: - ret = atomic_futex_op_xchg_and(~oparg, uaddr, &oldval); - break; - case FUTEX_OP_XOR: - ret = atomic_futex_op_xchg_xor(oparg, uaddr, &oldval); - break; - default: - ret = -ENOSYS; - break; - } - - pagefault_enable(); - - if (!ret) - *oval = oldval; - - return ret; - -} /* end arch_futex_atomic_op_inuser() */ diff --git a/arch/frv/kernel/gdb-io.c b/arch/frv/kernel/gdb-io.c deleted file mode 100644 index 0707d35079ba..000000000000 --- a/arch/frv/kernel/gdb-io.c +++ /dev/null @@ -1,215 +0,0 @@ -/* gdb-io.c: FR403 GDB stub I/O - * - * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/console.h> -#include <linux/init.h> -#include <linux/serial_reg.h> - -#include <asm/pgtable.h> -#include <asm/irc-regs.h> -#include <asm/timer-regs.h> -#include <asm/gdb-stub.h> -#include "gdb-io.h" - -#ifdef CONFIG_GDBSTUB_UART0 -#define __UART(X) (*(volatile uint8_t *)(UART0_BASE + (UART_##X))) -#define __UART_IRR_NMI 0xff0f0000 -#else /* CONFIG_GDBSTUB_UART1 */ -#define __UART(X) (*(volatile uint8_t *)(UART1_BASE + (UART_##X))) -#define __UART_IRR_NMI 0xfff00000 -#endif - -#define LSR_WAIT_FOR(STATE) \ -do { \ - gdbstub_do_rx(); \ -} while (!(__UART(LSR) & UART_LSR_##STATE)) - -#define FLOWCTL_QUERY(LINE) ({ __UART(MSR) & UART_MSR_##LINE; }) -#define FLOWCTL_CLEAR(LINE) do { __UART(MCR) &= ~UART_MCR_##LINE; mb(); } while (0) -#define FLOWCTL_SET(LINE) do { __UART(MCR) |= UART_MCR_##LINE; mb(); } while (0) - -#define FLOWCTL_WAIT_FOR(LINE) \ -do { \ - gdbstub_do_rx(); \ -} while(!FLOWCTL_QUERY(LINE)) - -/*****************************************************************************/ -/* - * initialise the GDB stub - * - called with PSR.ET==0, so can't incur external interrupts - */ -void gdbstub_io_init(void) -{ - /* set up the serial port */ - __UART(LCR) = UART_LCR_WLEN8; /* 1N8 */ - __UART(FCR) = - UART_FCR_ENABLE_FIFO | - UART_FCR_CLEAR_RCVR | - UART_FCR_CLEAR_XMIT | - UART_FCR_TRIGGER_1; - - FLOWCTL_CLEAR(DTR); - FLOWCTL_SET(RTS); - -// gdbstub_set_baud(115200); - - /* we want to get serial receive interrupts */ - __UART(IER) = UART_IER_RDI | UART_IER_RLSI; - mb(); - - __set_IRR(6, __UART_IRR_NMI); /* map ERRs and UARTx to NMI */ - -} /* end gdbstub_io_init() */ - -/*****************************************************************************/ -/* - * set up the GDB stub serial port baud rate timers - */ -void gdbstub_set_baud(unsigned baud) -{ - unsigned value, high, low; - u8 lcr; - - /* work out the divisor to give us the nearest higher baud rate */ - value = __serial_clock_speed_HZ / 16 / baud; - - /* determine the baud rate range */ - high = __serial_clock_speed_HZ / 16 / value; - low = __serial_clock_speed_HZ / 16 / (value + 1); - - /* pick the nearest bound */ - if (low + (high - low) / 2 > baud) - value++; - - lcr = __UART(LCR); - __UART(LCR) |= UART_LCR_DLAB; - mb(); - __UART(DLL) = value & 0xff; - __UART(DLM) = (value >> 8) & 0xff; - mb(); - __UART(LCR) = lcr; - mb(); - -} /* end gdbstub_set_baud() */ - -/*****************************************************************************/ -/* - * receive characters into the receive FIFO - */ -void gdbstub_do_rx(void) -{ - unsigned ix, nix; - - ix = gdbstub_rx_inp; - - while (__UART(LSR) & UART_LSR_DR) { - nix = (ix + 2) & 0xfff; - if (nix == gdbstub_rx_outp) - break; - - gdbstub_rx_buffer[ix++] = __UART(LSR); - gdbstub_rx_buffer[ix++] = __UART(RX); - ix = nix; - } - - gdbstub_rx_inp = ix; - - __clr_RC(15); - __clr_IRL(); - -} /* end gdbstub_do_rx() */ - -/*****************************************************************************/ -/* - * wait for a character to come from the debugger - */ -int gdbstub_rx_char(unsigned char *_ch, int nonblock) -{ - unsigned ix; - u8 ch, st; - - *_ch = 0xff; - - if (gdbstub_rx_unget) { - *_ch = gdbstub_rx_unget; - gdbstub_rx_unget = 0; - return 0; - } - - try_again: - gdbstub_do_rx(); - - /* pull chars out of the buffer */ - ix = gdbstub_rx_outp; - if (ix == gdbstub_rx_inp) { - if (nonblock) - return -EAGAIN; - //watchdog_alert_counter = 0; - goto try_again; - } - - st = gdbstub_rx_buffer[ix++]; - ch = gdbstub_rx_buffer[ix++]; - gdbstub_rx_outp = ix & 0x00000fff; - - if (st & UART_LSR_BI) { - gdbstub_proto("### GDB Rx Break Detected ###\n"); - return -EINTR; - } - else if (st & (UART_LSR_FE|UART_LSR_OE|UART_LSR_PE)) { - gdbstub_io("### GDB Rx Error (st=%02x) ###\n",st); - return -EIO; - } - else { - gdbstub_io("### GDB Rx %02x (st=%02x) ###\n",ch,st); - *_ch = ch & 0x7f; - return 0; - } - -} /* end gdbstub_rx_char() */ - -/*****************************************************************************/ -/* - * send a character to the debugger - */ -void gdbstub_tx_char(unsigned char ch) -{ - FLOWCTL_SET(DTR); - LSR_WAIT_FOR(THRE); -// FLOWCTL_WAIT_FOR(CTS); - - if (ch == 0x0a) { - __UART(TX) = 0x0d; - mb(); - LSR_WAIT_FOR(THRE); -// FLOWCTL_WAIT_FOR(CTS); - } - __UART(TX) = ch; - mb(); - - FLOWCTL_CLEAR(DTR); -} /* end gdbstub_tx_char() */ - -/*****************************************************************************/ -/* - * send a character to the debugger - */ -void gdbstub_tx_flush(void) -{ - LSR_WAIT_FOR(TEMT); - LSR_WAIT_FOR(THRE); - FLOWCTL_CLEAR(DTR); -} /* end gdbstub_tx_flush() */ diff --git a/arch/frv/kernel/gdb-io.h b/arch/frv/kernel/gdb-io.h deleted file mode 100644 index 138714bacc40..000000000000 --- a/arch/frv/kernel/gdb-io.h +++ /dev/null @@ -1,55 +0,0 @@ -/* gdb-io.h: FR403 GDB I/O port defs - * - * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#ifndef _GDB_IO_H -#define _GDB_IO_H - -#include <asm/serial-regs.h> - -#undef UART_RX -#undef UART_TX -#undef UART_DLL -#undef UART_DLM -#undef UART_IER -#undef UART_IIR -#undef UART_FCR -#undef UART_LCR -#undef UART_MCR -#undef UART_LSR -#undef UART_MSR -#undef UART_SCR - -#define UART_RX 0*8 /* In: Receive buffer (DLAB=0) */ -#define UART_TX 0*8 /* Out: Transmit buffer (DLAB=0) */ -#define UART_DLL 0*8 /* Out: Divisor Latch Low (DLAB=1) */ -#define UART_DLM 1*8 /* Out: Divisor Latch High (DLAB=1) */ -#define UART_IER 1*8 /* Out: Interrupt Enable Register */ -#define UART_IIR 2*8 /* In: Interrupt ID Register */ -#define UART_FCR 2*8 /* Out: FIFO Control Register */ -#define UART_LCR 3*8 /* Out: Line Control Register */ -#define UART_MCR 4*8 /* Out: Modem Control Register */ -#define UART_LSR 5*8 /* In: Line Status Register */ -#define UART_MSR 6*8 /* In: Modem Status Register */ -#define UART_SCR 7*8 /* I/O: Scratch Register */ - -#define UART_LCR_DLAB 0x80 /* Divisor latch access bit */ -#define UART_LCR_SBC 0x40 /* Set break control */ -#define UART_LCR_SPAR 0x20 /* Stick parity (?) */ -#define UART_LCR_EPAR 0x10 /* Even parity select */ -#define UART_LCR_PARITY 0x08 /* Parity Enable */ -#define UART_LCR_STOP 0x04 /* Stop bits: 0=1 stop bit, 1= 2 stop bits */ -#define UART_LCR_WLEN5 0x00 /* Wordlength: 5 bits */ -#define UART_LCR_WLEN6 0x01 /* Wordlength: 6 bits */ -#define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */ -#define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */ - - -#endif /* _GDB_IO_H */ diff --git a/arch/frv/kernel/gdb-stub.c b/arch/frv/kernel/gdb-stub.c deleted file mode 100644 index bbe78b0bffec..000000000000 --- a/arch/frv/kernel/gdb-stub.c +++ /dev/null @@ -1,2149 +0,0 @@ -/* gdb-stub.c: FRV GDB stub - * - * Copyright (C) 2003,4 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from Linux/MIPS version, Copyright (C) 1995 Andreas Busse - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -/* - * To enable debugger support, two things need to happen. One, a - * call to set_debug_traps() is necessary in order to allow any breakpoints - * or error conditions to be properly intercepted and reported to gdb. - * Two, a breakpoint needs to be generated to begin communication. This - * is most easily accomplished by a call to breakpoint(). Breakpoint() - * simulates a breakpoint by executing a BREAK instruction. - * - * - * The following gdb commands are supported: - * - * command function Return value - * - * g return the value of the CPU registers hex data or ENN - * G set the value of the CPU registers OK or ENN - * - * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN - * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN - * - * c Resume at current address SNN ( signal NN) - * cAA..AA Continue at address AA..AA SNN - * - * s Step one instruction SNN - * sAA..AA Step one instruction from AA..AA SNN - * - * k kill - * - * ? What was the last sigval ? SNN (signal NN) - * - * bBB..BB Set baud rate to BB..BB OK or BNN, then sets - * baud rate - * - * All commands and responses are sent with a packet which includes a - * checksum. A packet consists of - * - * $<packet info>#<checksum>. - * - * where - * <packet info> :: <characters representing the command or response> - * <checksum> :: < two hex digits computed as modulo 256 sum of <packetinfo>> - * - * When a packet is received, it is first acknowledged with either '+' or '-'. - * '+' indicates a successful transfer. '-' indicates a failed transfer. - * - * Example: - * - * Host: Reply: - * $m0,10#2a +$00010203040506070809101112131415#42 - * - * - * ============== - * MORE EXAMPLES: - * ============== - * - * For reference -- the following are the steps that one - * company took (RidgeRun Inc) to get remote gdb debugging - * going. In this scenario the host machine was a PC and the - * target platform was a Galileo EVB64120A MIPS evaluation - * board. - * - * Step 1: - * First download gdb-5.0.tar.gz from the internet. - * and then build/install the package. - * - * Example: - * $ tar zxf gdb-5.0.tar.gz - * $ cd gdb-5.0 - * $ ./configure --target=frv-elf-gdb - * $ make - * $ frv-elf-gdb - * - * Step 2: - * Configure linux for remote debugging and build it. - * - * Example: - * $ cd ~/linux - * $ make menuconfig <go to "Kernel Hacking" and turn on remote debugging> - * $ make vmlinux - * - * Step 3: - * Download the kernel to the remote target and start - * the kernel running. It will promptly halt and wait - * for the host gdb session to connect. It does this - * since the "Kernel Hacking" option has defined - * CONFIG_REMOTE_DEBUG which in turn enables your calls - * to: - * set_debug_traps(); - * breakpoint(); - * - * Step 4: - * Start the gdb session on the host. - * - * Example: - * $ frv-elf-gdb vmlinux - * (gdb) set remotebaud 115200 - * (gdb) target remote /dev/ttyS1 - * ...at this point you are connected to - * the remote target and can use gdb - * in the normal fasion. Setting - * breakpoints, single stepping, - * printing variables, etc. - * - */ - -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/console.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/nmi.h> - -#include <asm/asm-offsets.h> -#include <asm/pgtable.h> -#include <asm/gdb-stub.h> - -#define LEDS(x) do { /* *(u32*)0xe1200004 = ~(x); mb(); */ } while(0) - -#undef GDBSTUB_DEBUG_PROTOCOL - -extern void debug_to_serial(const char *p, int n); -extern void gdbstub_console_write(struct console *co, const char *p, unsigned n); - -extern volatile uint32_t __break_error_detect[3]; /* ESFR1, ESR15, EAR15 */ - -struct __debug_amr { - unsigned long L, P; -} __attribute__((aligned(8))); - -struct __debug_mmu { - struct { - unsigned long hsr0, pcsr, esr0, ear0, epcr0; -#ifdef CONFIG_MMU - unsigned long tplr, tppr, tpxr, cxnr; -#endif - } regs; - - struct __debug_amr iamr[16]; - struct __debug_amr damr[16]; - -#ifdef CONFIG_MMU - struct __debug_amr tlb[64*2]; -#endif -}; - -static struct __debug_mmu __debug_mmu; - -/* - * BUFMAX defines the maximum number of characters in inbound/outbound buffers - * at least NUMREGBYTES*2 are needed for register packets - */ -#define BUFMAX 2048 - -#define BREAK_INSN 0x801000c0 /* use "break" as bkpt */ - -static const char gdbstub_banner[] = "Linux/FR-V GDB Stub (c) RedHat 2003\n"; - -volatile u8 gdbstub_rx_buffer[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE))); -volatile u32 gdbstub_rx_inp = 0; -volatile u32 gdbstub_rx_outp = 0; -volatile u8 gdbstub_rx_overflow = 0; -u8 gdbstub_rx_unget = 0; - -/* set with GDB whilst running to permit step through exceptions */ -extern volatile u32 __attribute__((section(".bss"))) gdbstub_trace_through_exceptions; - -static char input_buffer[BUFMAX]; -static char output_buffer[BUFMAX]; - -static const char *regnames[] = { - "PSR ", "ISR ", "CCR ", "CCCR", - "LR ", "LCR ", "PC ", "_stt", - "sys ", "GR8*", "GNE0", "GNE1", - "IACH", "IACL", - "TBR ", "SP ", "FP ", "GR3 ", - "GR4 ", "GR5 ", "GR6 ", "GR7 ", - "GR8 ", "GR9 ", "GR10", "GR11", - "GR12", "GR13", "GR14", "GR15", - "GR16", "GR17", "GR18", "GR19", - "GR20", "GR21", "GR22", "GR23", - "GR24", "GR25", "GR26", "GR27", - "EFRM", "CURR", "GR30", "BFRM" -}; - -struct gdbstub_bkpt { - unsigned long addr; /* address of breakpoint */ - unsigned len; /* size of breakpoint */ - uint32_t originsns[7]; /* original instructions */ -}; - -static struct gdbstub_bkpt gdbstub_bkpts[256]; - -/* - * local prototypes - */ - -static void gdbstub_recv_packet(char *buffer); -static int gdbstub_send_packet(char *buffer); -static int gdbstub_compute_signal(unsigned long tbr); -static int hex(unsigned char ch); -static int hexToInt(char **ptr, unsigned long *intValue); -static unsigned char *mem2hex(const void *mem, char *buf, int count, int may_fault); -static char *hex2mem(const char *buf, void *_mem, int count); - -/* - * Convert ch from a hex digit to an int - */ -static int hex(unsigned char ch) -{ - if (ch >= 'a' && ch <= 'f') - return ch-'a'+10; - if (ch >= '0' && ch <= '9') - return ch-'0'; - if (ch >= 'A' && ch <= 'F') - return ch-'A'+10; - return -1; -} - -void gdbstub_printk(const char *fmt, ...) -{ - static char buf[1024]; - va_list args; - int len; - - /* Emit the output into the temporary buffer */ - va_start(args, fmt); - len = vsnprintf(buf, sizeof(buf), fmt, args); - va_end(args); - debug_to_serial(buf, len); -} - -static inline char *gdbstub_strcpy(char *dst, const char *src) -{ - int loop = 0; - while ((dst[loop] = src[loop])) - loop++; - return dst; -} - -static void gdbstub_purge_cache(void) -{ - asm volatile(" dcef @(gr0,gr0),#1 \n" - " icei @(gr0,gr0),#1 \n" - " membar \n" - " bar \n" - ); -} - -/*****************************************************************************/ -/* - * scan for the sequence $<data>#<checksum> - */ -static void gdbstub_recv_packet(char *buffer) -{ - unsigned char checksum; - unsigned char xmitcsum; - unsigned char ch; - int count, i, ret, error; - - for (;;) { - /* wait around for the start character, ignore all other characters */ - do { - gdbstub_rx_char(&ch, 0); - } while (ch != '$'); - - checksum = 0; - xmitcsum = -1; - count = 0; - error = 0; - - /* now, read until a # or end of buffer is found */ - while (count < BUFMAX) { - ret = gdbstub_rx_char(&ch, 0); - if (ret < 0) - error = ret; - - if (ch == '#') - break; - checksum += ch; - buffer[count] = ch; - count++; - } - - if (error == -EIO) { - gdbstub_proto("### GDB Rx Error - Skipping packet ###\n"); - gdbstub_proto("### GDB Tx NAK\n"); - gdbstub_tx_char('-'); - continue; - } - - if (count >= BUFMAX || error) - continue; - - buffer[count] = 0; - - /* read the checksum */ - ret = gdbstub_rx_char(&ch, 0); - if (ret < 0) - error = ret; - xmitcsum = hex(ch) << 4; - - ret = gdbstub_rx_char(&ch, 0); - if (ret < 0) - error = ret; - xmitcsum |= hex(ch); - - if (error) { - if (error == -EIO) - gdbstub_proto("### GDB Rx Error - Skipping packet\n"); - gdbstub_proto("### GDB Tx NAK\n"); - gdbstub_tx_char('-'); - continue; - } - - /* check the checksum */ - if (checksum != xmitcsum) { - gdbstub_proto("### GDB Tx NAK\n"); - gdbstub_tx_char('-'); /* failed checksum */ - continue; - } - - gdbstub_proto("### GDB Rx '$%s#%02x' ###\n", buffer, checksum); - gdbstub_proto("### GDB Tx ACK\n"); - gdbstub_tx_char('+'); /* successful transfer */ - - /* if a sequence char is present, reply the sequence ID */ - if (buffer[2] == ':') { - gdbstub_tx_char(buffer[0]); - gdbstub_tx_char(buffer[1]); - - /* remove sequence chars from buffer */ - count = 0; - while (buffer[count]) count++; - for (i=3; i <= count; i++) - buffer[i - 3] = buffer[i]; - } - - break; - } -} /* end gdbstub_recv_packet() */ - -/*****************************************************************************/ -/* - * send the packet in buffer. - * - return 0 if successfully ACK'd - * - return 1 if abandoned due to new incoming packet - */ -static int gdbstub_send_packet(char *buffer) -{ - unsigned char checksum; - int count; - unsigned char ch; - - /* $<packet info>#<checksum> */ - gdbstub_proto("### GDB Tx '%s' ###\n", buffer); - - do { - gdbstub_tx_char('$'); - checksum = 0; - count = 0; - - while ((ch = buffer[count]) != 0) { - gdbstub_tx_char(ch); - checksum += ch; - count += 1; - } - - gdbstub_tx_char('#'); - gdbstub_tx_char(hex_asc_hi(checksum)); - gdbstub_tx_char(hex_asc_lo(checksum)); - - } while (gdbstub_rx_char(&ch,0), -#ifdef GDBSTUB_DEBUG_PROTOCOL - ch=='-' && (gdbstub_proto("### GDB Rx NAK\n"),0), - ch!='-' && ch!='+' && (gdbstub_proto("### GDB Rx ??? %02x\n",ch),0), -#endif - ch!='+' && ch!='$'); - - if (ch=='+') { - gdbstub_proto("### GDB Rx ACK\n"); - return 0; - } - - gdbstub_proto("### GDB Tx Abandoned\n"); - gdbstub_rx_unget = ch; - return 1; -} /* end gdbstub_send_packet() */ - -/* - * While we find nice hex chars, build an int. - * Return number of chars processed. - */ -static int hexToInt(char **ptr, unsigned long *_value) -{ - int count = 0, ch; - - *_value = 0; - while (**ptr) { - ch = hex(**ptr); - if (ch < 0) - break; - - *_value = (*_value << 4) | ((uint8_t) ch & 0xf); - count++; - - (*ptr)++; - } - - return count; -} - -/*****************************************************************************/ -/* - * probe an address to see whether it maps to anything - */ -static inline int gdbstub_addr_probe(const void *vaddr) -{ -#ifdef CONFIG_MMU - unsigned long paddr; - - asm("lrad %1,%0,#1,#0,#0" : "=r"(paddr) : "r"(vaddr)); - if (!(paddr & xAMPRx_V)) - return 0; -#endif - - return 1; -} /* end gdbstub_addr_probe() */ - -#ifdef CONFIG_MMU -static unsigned long __saved_dampr, __saved_damlr; - -static inline unsigned long gdbstub_virt_to_pte(unsigned long vaddr) -{ - pgd_t *pgd; - pud_t *pud; - pmd_t *pmd; - pte_t *pte; - unsigned long val, dampr5; - - pgd = (pgd_t *) __get_DAMLR(3) + pgd_index(vaddr); - pud = pud_offset(pgd, vaddr); - pmd = pmd_offset(pud, vaddr); - - if (pmd_bad(*pmd) || !pmd_present(*pmd)) - return 0; - - /* make sure dampr5 maps to the correct pmd */ - dampr5 = __get_DAMPR(5); - val = pmd_val(*pmd); - __set_DAMPR(5, val | xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C | xAMPRx_V); - - /* now its safe to access pmd */ - pte = (pte_t *)__get_DAMLR(5) + __pte_index(vaddr); - if (pte_present(*pte)) - val = pte_val(*pte); - else - val = 0; - - /* restore original dampr5 */ - __set_DAMPR(5, dampr5); - - return val; -} -#endif - -static inline int gdbstub_addr_map(const void *vaddr) -{ -#ifdef CONFIG_MMU - unsigned long pte; - - __saved_dampr = __get_DAMPR(2); - __saved_damlr = __get_DAMLR(2); -#endif - if (gdbstub_addr_probe(vaddr)) - return 1; -#ifdef CONFIG_MMU - pte = gdbstub_virt_to_pte((unsigned long) vaddr); - if (pte) { - __set_DAMPR(2, pte); - __set_DAMLR(2, (unsigned long) vaddr & PAGE_MASK); - return 1; - } -#endif - return 0; -} - -static inline void gdbstub_addr_unmap(void) -{ -#ifdef CONFIG_MMU - __set_DAMPR(2, __saved_dampr); - __set_DAMLR(2, __saved_damlr); -#endif -} - -/* - * access potentially dodgy memory through a potentially dodgy pointer - */ -static inline int gdbstub_read_dword(const void *addr, uint32_t *_res) -{ - unsigned long brr; - uint32_t res; - - if (!gdbstub_addr_map(addr)) - return 0; - - asm volatile(" movgs gr0,brr \n" - " ld%I2 %M2,%0 \n" - " movsg brr,%1 \n" - : "=r"(res), "=r"(brr) - : "m"(*(uint32_t *) addr)); - *_res = res; - gdbstub_addr_unmap(); - return likely(!brr); -} - -static inline int gdbstub_write_dword(void *addr, uint32_t val) -{ - unsigned long brr; - - if (!gdbstub_addr_map(addr)) - return 0; - - asm volatile(" movgs gr0,brr \n" - " st%I2 %1,%M2 \n" - " movsg brr,%0 \n" - : "=r"(brr) - : "r"(val), "m"(*(uint32_t *) addr)); - gdbstub_addr_unmap(); - return likely(!brr); -} - -static inline int gdbstub_read_word(const void *addr, uint16_t *_res) -{ - unsigned long brr; - uint16_t res; - - if (!gdbstub_addr_map(addr)) - return 0; - - asm volatile(" movgs gr0,brr \n" - " lduh%I2 %M2,%0 \n" - " movsg brr,%1 \n" - : "=r"(res), "=r"(brr) - : "m"(*(uint16_t *) addr)); - *_res = res; - gdbstub_addr_unmap(); - return likely(!brr); -} - -static inline int gdbstub_write_word(void *addr, uint16_t val) -{ - unsigned long brr; - - if (!gdbstub_addr_map(addr)) - return 0; - - asm volatile(" movgs gr0,brr \n" - " sth%I2 %1,%M2 \n" - " movsg brr,%0 \n" - : "=r"(brr) - : "r"(val), "m"(*(uint16_t *) addr)); - gdbstub_addr_unmap(); - return likely(!brr); -} - -static inline int gdbstub_read_byte(const void *addr, uint8_t *_res) -{ - unsigned long brr; - uint8_t res; - - if (!gdbstub_addr_map(addr)) - return 0; - - asm volatile(" movgs gr0,brr \n" - " ldub%I2 %M2,%0 \n" - " movsg brr,%1 \n" - : "=r"(res), "=r"(brr) - : "m"(*(uint8_t *) addr)); - *_res = res; - gdbstub_addr_unmap(); - return likely(!brr); -} - -static inline int gdbstub_write_byte(void *addr, uint8_t val) -{ - unsigned long brr; - - if (!gdbstub_addr_map(addr)) - return 0; - - asm volatile(" movgs gr0,brr \n" - " stb%I2 %1,%M2 \n" - " movsg brr,%0 \n" - : "=r"(brr) - : "r"(val), "m"(*(uint8_t *) addr)); - gdbstub_addr_unmap(); - return likely(!brr); -} - -static void __gdbstub_console_write(struct console *co, const char *p, unsigned n) -{ - char outbuf[26]; - int qty; - - outbuf[0] = 'O'; - - while (n > 0) { - qty = 1; - - while (n > 0 && qty < 20) { - mem2hex(p, outbuf + qty, 2, 0); - qty += 2; - if (*p == 0x0a) { - outbuf[qty++] = '0'; - outbuf[qty++] = 'd'; - } - p++; - n--; - } - - outbuf[qty] = 0; - gdbstub_send_packet(outbuf); - } -} - -#if 0 -void debug_to_serial(const char *p, int n) -{ - gdbstub_console_write(NULL,p,n); -} -#endif - -#ifdef CONFIG_GDB_CONSOLE - -static struct console gdbstub_console = { - .name = "gdb", - .write = gdbstub_console_write, /* in break.S */ - .flags = CON_PRINTBUFFER, - .index = -1, -}; - -#endif - -/*****************************************************************************/ -/* - * Convert the memory pointed to by mem into hex, placing result in buf. - * - if successful, return a pointer to the last char put in buf (NUL) - * - in case of mem fault, return NULL - * may_fault is non-zero if we are reading from arbitrary memory, but is currently - * not used. - */ -static unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault) -{ - const uint8_t *mem = _mem; - uint8_t ch[4] __attribute__((aligned(4))); - - if ((uint32_t)mem&1 && count>=1) { - if (!gdbstub_read_byte(mem,ch)) - return NULL; - buf = hex_byte_pack(buf, ch[0]); - mem++; - count--; - } - - if ((uint32_t)mem&3 && count>=2) { - if (!gdbstub_read_word(mem,(uint16_t *)ch)) - return NULL; - buf = hex_byte_pack(buf, ch[0]); - buf = hex_byte_pack(buf, ch[1]); - mem += 2; - count -= 2; - } - - while (count>=4) { - if (!gdbstub_read_dword(mem,(uint32_t *)ch)) - return NULL; - buf = hex_byte_pack(buf, ch[0]); - buf = hex_byte_pack(buf, ch[1]); - buf = hex_byte_pack(buf, ch[2]); - buf = hex_byte_pack(buf, ch[3]); - mem += 4; - count -= 4; - } - - if (count>=2) { - if (!gdbstub_read_word(mem,(uint16_t *)ch)) - return NULL; - buf = hex_byte_pack(buf, ch[0]); - buf = hex_byte_pack(buf, ch[1]); - mem += 2; - count -= 2; - } - - if (count>=1) { - if (!gdbstub_read_byte(mem,ch)) - return NULL; - buf = hex_byte_pack(buf, ch[0]); - } - - *buf = 0; - - return buf; -} /* end mem2hex() */ - -/*****************************************************************************/ -/* - * convert the hex array pointed to by buf into binary to be placed in mem - * return a pointer to the character AFTER the last byte of buffer consumed - */ -static char *hex2mem(const char *buf, void *_mem, int count) -{ - uint8_t *mem = _mem; - union { - uint32_t l; - uint16_t w; - uint8_t b[4]; - } ch; - - if ((u32)mem&1 && count>=1) { - ch.b[0] = hex(*buf++) << 4; - ch.b[0] |= hex(*buf++); - if (!gdbstub_write_byte(mem,ch.b[0])) - return NULL; - mem++; - count--; - } - - if ((u32)mem&3 && count>=2) { - ch.b[0] = hex(*buf++) << 4; - ch.b[0] |= hex(*buf++); - ch.b[1] = hex(*buf++) << 4; - ch.b[1] |= hex(*buf++); - if (!gdbstub_write_word(mem,ch.w)) - return NULL; - mem += 2; - count -= 2; - } - - while (count>=4) { - ch.b[0] = hex(*buf++) << 4; - ch.b[0] |= hex(*buf++); - ch.b[1] = hex(*buf++) << 4; - ch.b[1] |= hex(*buf++); - ch.b[2] = hex(*buf++) << 4; - ch.b[2] |= hex(*buf++); - ch.b[3] = hex(*buf++) << 4; - ch.b[3] |= hex(*buf++); - if (!gdbstub_write_dword(mem,ch.l)) - return NULL; - mem += 4; - count -= 4; - } - - if (count>=2) { - ch.b[0] = hex(*buf++) << 4; - ch.b[0] |= hex(*buf++); - ch.b[1] = hex(*buf++) << 4; - ch.b[1] |= hex(*buf++); - if (!gdbstub_write_word(mem,ch.w)) - return NULL; - mem += 2; - count -= 2; - } - - if (count>=1) { - ch.b[0] = hex(*buf++) << 4; - ch.b[0] |= hex(*buf++); - if (!gdbstub_write_byte(mem,ch.b[0])) - return NULL; - } - - return (char *) buf; -} /* end hex2mem() */ - -/*****************************************************************************/ -/* - * This table contains the mapping between FRV TBR.TT exception codes, - * and signals, which are primarily what GDB understands. It also - * indicates which hardware traps we need to commandeer when - * initializing the stub. - */ -static const struct brr_to_sig_map { - unsigned long brr_mask; /* BRR bitmask */ - unsigned long tbr_tt; /* TBR.TT code (in BRR.EBTT) */ - unsigned int signo; /* Signal that we map this into */ -} brr_to_sig_map[] = { - { BRR_EB, TBR_TT_INSTR_ACC_ERROR, SIGSEGV }, - { BRR_EB, TBR_TT_ILLEGAL_INSTR, SIGILL }, - { BRR_EB, TBR_TT_PRIV_INSTR, SIGILL }, - { BRR_EB, TBR_TT_MP_EXCEPTION, SIGFPE }, - { BRR_EB, TBR_TT_DATA_ACC_ERROR, SIGSEGV }, - { BRR_EB, TBR_TT_DATA_STR_ERROR, SIGSEGV }, - { BRR_EB, TBR_TT_DIVISION_EXCEP, SIGFPE }, - { BRR_EB, TBR_TT_COMPOUND_EXCEP, SIGSEGV }, - { BRR_EB, TBR_TT_INTERRUPT_13, SIGALRM }, /* watchdog */ - { BRR_EB, TBR_TT_INTERRUPT_14, SIGINT }, /* GDB serial */ - { BRR_EB, TBR_TT_INTERRUPT_15, SIGQUIT }, /* NMI */ - { BRR_CB, 0, SIGUSR1 }, - { BRR_TB, 0, SIGUSR2 }, - { BRR_DBNEx, 0, SIGTRAP }, - { BRR_DBx, 0, SIGTRAP }, /* h/w watchpoint */ - { BRR_IBx, 0, SIGTRAP }, /* h/w breakpoint */ - { BRR_CBB, 0, SIGTRAP }, - { BRR_SB, 0, SIGTRAP }, - { BRR_ST, 0, SIGTRAP }, /* single step */ - { 0, 0, SIGHUP } /* default */ -}; - -/*****************************************************************************/ -/* - * convert the FRV BRR register contents into a UNIX signal number - */ -static inline int gdbstub_compute_signal(unsigned long brr) -{ - const struct brr_to_sig_map *map; - unsigned long tbr = (brr & BRR_EBTT) >> 12; - - for (map = brr_to_sig_map; map->brr_mask; map++) - if (map->brr_mask & brr) - if (!map->tbr_tt || map->tbr_tt == tbr) - break; - - return map->signo; -} /* end gdbstub_compute_signal() */ - -/*****************************************************************************/ -/* - * set a software breakpoint or a hardware breakpoint or watchpoint - */ -static int gdbstub_set_breakpoint(unsigned long type, unsigned long addr, unsigned long len) -{ - unsigned long tmp; - int bkpt, loop, xloop; - - union { - struct { - unsigned long mask0, mask1; - }; - uint8_t bytes[8]; - } dbmr; - - //gdbstub_printk("setbkpt(%ld,%08lx,%ld)\n", type, addr, len); - - switch (type) { - /* set software breakpoint */ - case 0: - if (addr & 3 || len > 7*4) - return -EINVAL; - - for (bkpt = 255; bkpt >= 0; bkpt--) - if (!gdbstub_bkpts[bkpt].addr) - break; - if (bkpt < 0) - return -ENOSPC; - - for (loop = 0; loop < len/4; loop++) - if (!gdbstub_read_dword(&((uint32_t *) addr)[loop], - &gdbstub_bkpts[bkpt].originsns[loop])) - return -EFAULT; - - for (loop = 0; loop < len/4; loop++) - if (!gdbstub_write_dword(&((uint32_t *) addr)[loop], - BREAK_INSN) - ) { - /* need to undo the changes if possible */ - for (xloop = 0; xloop < loop; xloop++) - gdbstub_write_dword(&((uint32_t *) addr)[xloop], - gdbstub_bkpts[bkpt].originsns[xloop]); - return -EFAULT; - } - - gdbstub_bkpts[bkpt].addr = addr; - gdbstub_bkpts[bkpt].len = len; - -#if 0 - gdbstub_printk("Set BKPT[%02x]: %08lx #%d {%04x, %04x} -> { %04x, %04x }\n", - bkpt, - gdbstub_bkpts[bkpt].addr, - gdbstub_bkpts[bkpt].len, - gdbstub_bkpts[bkpt].originsns[0], - gdbstub_bkpts[bkpt].originsns[1], - ((uint32_t *) addr)[0], - ((uint32_t *) addr)[1] - ); -#endif - return 0; - - /* set hardware breakpoint */ - case 1: - if (addr & 3 || len != 4) - return -EINVAL; - - if (!(__debug_regs->dcr & DCR_IBE0)) { - //gdbstub_printk("set h/w break 0: %08lx\n", addr); - __debug_regs->dcr |= DCR_IBE0; - __debug_regs->ibar[0] = addr; - asm volatile("movgs %0,ibar0" : : "r"(addr)); - return 0; - } - - if (!(__debug_regs->dcr & DCR_IBE1)) { - //gdbstub_printk("set h/w break 1: %08lx\n", addr); - __debug_regs->dcr |= DCR_IBE1; - __debug_regs->ibar[1] = addr; - asm volatile("movgs %0,ibar1" : : "r"(addr)); - return 0; - } - - if (!(__debug_regs->dcr & DCR_IBE2)) { - //gdbstub_printk("set h/w break 2: %08lx\n", addr); - __debug_regs->dcr |= DCR_IBE2; - __debug_regs->ibar[2] = addr; - asm volatile("movgs %0,ibar2" : : "r"(addr)); - return 0; - } - - if (!(__debug_regs->dcr & DCR_IBE3)) { - //gdbstub_printk("set h/w break 3: %08lx\n", addr); - __debug_regs->dcr |= DCR_IBE3; - __debug_regs->ibar[3] = addr; - asm volatile("movgs %0,ibar3" : : "r"(addr)); - return 0; - } - - return -ENOSPC; - - /* set data read/write/access watchpoint */ - case 2: - case 3: - case 4: - if ((addr & ~7) != ((addr + len - 1) & ~7)) - return -EINVAL; - - tmp = addr & 7; - - memset(dbmr.bytes, 0xff, sizeof(dbmr.bytes)); - for (loop = 0; loop < len; loop++) - dbmr.bytes[tmp + loop] = 0; - - addr &= ~7; - - if (!(__debug_regs->dcr & (DCR_DRBE0|DCR_DWBE0))) { - //gdbstub_printk("set h/w watchpoint 0 type %ld: %08lx\n", type, addr); - tmp = type==2 ? DCR_DWBE0 : type==3 ? DCR_DRBE0 : DCR_DRBE0|DCR_DWBE0; - - __debug_regs->dcr |= tmp; - __debug_regs->dbar[0] = addr; - __debug_regs->dbmr[0][0] = dbmr.mask0; - __debug_regs->dbmr[0][1] = dbmr.mask1; - __debug_regs->dbdr[0][0] = 0; - __debug_regs->dbdr[0][1] = 0; - - asm volatile(" movgs %0,dbar0 \n" - " movgs %1,dbmr00 \n" - " movgs %2,dbmr01 \n" - " movgs gr0,dbdr00 \n" - " movgs gr0,dbdr01 \n" - : : "r"(addr), "r"(dbmr.mask0), "r"(dbmr.mask1)); - return 0; - } - - if (!(__debug_regs->dcr & (DCR_DRBE1|DCR_DWBE1))) { - //gdbstub_printk("set h/w watchpoint 1 type %ld: %08lx\n", type, addr); - tmp = type==2 ? DCR_DWBE1 : type==3 ? DCR_DRBE1 : DCR_DRBE1|DCR_DWBE1; - - __debug_regs->dcr |= tmp; - __debug_regs->dbar[1] = addr; - __debug_regs->dbmr[1][0] = dbmr.mask0; - __debug_regs->dbmr[1][1] = dbmr.mask1; - __debug_regs->dbdr[1][0] = 0; - __debug_regs->dbdr[1][1] = 0; - - asm volatile(" movgs %0,dbar1 \n" - " movgs %1,dbmr10 \n" - " movgs %2,dbmr11 \n" - " movgs gr0,dbdr10 \n" - " movgs gr0,dbdr11 \n" - : : "r"(addr), "r"(dbmr.mask0), "r"(dbmr.mask1)); - return 0; - } - - return -ENOSPC; - - default: - return -EINVAL; - } - -} /* end gdbstub_set_breakpoint() */ - -/*****************************************************************************/ -/* - * clear a breakpoint or watchpoint - */ -int gdbstub_clear_breakpoint(unsigned long type, unsigned long addr, unsigned long len) -{ - unsigned long tmp; - int bkpt, loop; - - union { - struct { - unsigned long mask0, mask1; - }; - uint8_t bytes[8]; - } dbmr; - - //gdbstub_printk("clearbkpt(%ld,%08lx,%ld)\n", type, addr, len); - - switch (type) { - /* clear software breakpoint */ - case 0: - for (bkpt = 255; bkpt >= 0; bkpt--) - if (gdbstub_bkpts[bkpt].addr == addr && gdbstub_bkpts[bkpt].len == len) - break; - if (bkpt < 0) - return -ENOENT; - - gdbstub_bkpts[bkpt].addr = 0; - - for (loop = 0; loop < len/4; loop++) - if (!gdbstub_write_dword(&((uint32_t *) addr)[loop], - gdbstub_bkpts[bkpt].originsns[loop])) - return -EFAULT; - return 0; - - /* clear hardware breakpoint */ - case 1: - if (addr & 3 || len != 4) - return -EINVAL; - -#define __get_ibar(X) ({ unsigned long x; asm volatile("movsg ibar"#X",%0" : "=r"(x)); x; }) - - if (__debug_regs->dcr & DCR_IBE0 && __get_ibar(0) == addr) { - //gdbstub_printk("clear h/w break 0: %08lx\n", addr); - __debug_regs->dcr &= ~DCR_IBE0; - __debug_regs->ibar[0] = 0; - asm volatile("movgs gr0,ibar0"); - return 0; - } - - if (__debug_regs->dcr & DCR_IBE1 && __get_ibar(1) == addr) { - //gdbstub_printk("clear h/w break 1: %08lx\n", addr); - __debug_regs->dcr &= ~DCR_IBE1; - __debug_regs->ibar[1] = 0; - asm volatile("movgs gr0,ibar1"); - return 0; - } - - if (__debug_regs->dcr & DCR_IBE2 && __get_ibar(2) == addr) { - //gdbstub_printk("clear h/w break 2: %08lx\n", addr); - __debug_regs->dcr &= ~DCR_IBE2; - __debug_regs->ibar[2] = 0; - asm volatile("movgs gr0,ibar2"); - return 0; - } - - if (__debug_regs->dcr & DCR_IBE3 && __get_ibar(3) == addr) { - //gdbstub_printk("clear h/w break 3: %08lx\n", addr); - __debug_regs->dcr &= ~DCR_IBE3; - __debug_regs->ibar[3] = 0; - asm volatile("movgs gr0,ibar3"); - return 0; - } - - return -EINVAL; - - /* clear data read/write/access watchpoint */ - case 2: - case 3: - case 4: - if ((addr & ~7) != ((addr + len - 1) & ~7)) - return -EINVAL; - - tmp = addr & 7; - - memset(dbmr.bytes, 0xff, sizeof(dbmr.bytes)); - for (loop = 0; loop < len; loop++) - dbmr.bytes[tmp + loop] = 0; - - addr &= ~7; - -#define __get_dbar(X) ({ unsigned long x; asm volatile("movsg dbar"#X",%0" : "=r"(x)); x; }) -#define __get_dbmr0(X) ({ unsigned long x; asm volatile("movsg dbmr"#X"0,%0" : "=r"(x)); x; }) -#define __get_dbmr1(X) ({ unsigned long x; asm volatile("movsg dbmr"#X"1,%0" : "=r"(x)); x; }) - - /* consider DBAR 0 */ - tmp = type==2 ? DCR_DWBE0 : type==3 ? DCR_DRBE0 : DCR_DRBE0|DCR_DWBE0; - - if ((__debug_regs->dcr & (DCR_DRBE0|DCR_DWBE0)) != tmp || - __get_dbar(0) != addr || - __get_dbmr0(0) != dbmr.mask0 || - __get_dbmr1(0) != dbmr.mask1) - goto skip_dbar0; - - //gdbstub_printk("clear h/w watchpoint 0 type %ld: %08lx\n", type, addr); - __debug_regs->dcr &= ~(DCR_DRBE0|DCR_DWBE0); - __debug_regs->dbar[0] = 0; - __debug_regs->dbmr[0][0] = 0; - __debug_regs->dbmr[0][1] = 0; - __debug_regs->dbdr[0][0] = 0; - __debug_regs->dbdr[0][1] = 0; - - asm volatile(" movgs gr0,dbar0 \n" - " movgs gr0,dbmr00 \n" - " movgs gr0,dbmr01 \n" - " movgs gr0,dbdr00 \n" - " movgs gr0,dbdr01 \n"); - return 0; - - skip_dbar0: - /* consider DBAR 0 */ - tmp = type==2 ? DCR_DWBE1 : type==3 ? DCR_DRBE1 : DCR_DRBE1|DCR_DWBE1; - - if ((__debug_regs->dcr & (DCR_DRBE1|DCR_DWBE1)) != tmp || - __get_dbar(1) != addr || - __get_dbmr0(1) != dbmr.mask0 || - __get_dbmr1(1) != dbmr.mask1) - goto skip_dbar1; - - //gdbstub_printk("clear h/w watchpoint 1 type %ld: %08lx\n", type, addr); - __debug_regs->dcr &= ~(DCR_DRBE1|DCR_DWBE1); - __debug_regs->dbar[1] = 0; - __debug_regs->dbmr[1][0] = 0; - __debug_regs->dbmr[1][1] = 0; - __debug_regs->dbdr[1][0] = 0; - __debug_regs->dbdr[1][1] = 0; - - asm volatile(" movgs gr0,dbar1 \n" - " movgs gr0,dbmr10 \n" - " movgs gr0,dbmr11 \n" - " movgs gr0,dbdr10 \n" - " movgs gr0,dbdr11 \n"); - return 0; - - skip_dbar1: - return -ENOSPC; - - default: - return -EINVAL; - } -} /* end gdbstub_clear_breakpoint() */ - -/*****************************************************************************/ -/* - * check a for an internal software breakpoint, and wind the PC back if necessary - */ -static void gdbstub_check_breakpoint(void) -{ - unsigned long addr = __debug_frame->pc - 4; - int bkpt; - - for (bkpt = 255; bkpt >= 0; bkpt--) - if (gdbstub_bkpts[bkpt].addr == addr) - break; - if (bkpt >= 0) - __debug_frame->pc = addr; - - //gdbstub_printk("alter pc [%d] %08lx\n", bkpt, __debug_frame->pc); - -} /* end gdbstub_check_breakpoint() */ - -/*****************************************************************************/ -/* - * - */ -static void __maybe_unused gdbstub_show_regs(void) -{ - unsigned long *reg; - int loop; - - gdbstub_printk("\n"); - - gdbstub_printk("Frame: @%p [%s]\n", - __debug_frame, - __debug_frame->psr & PSR_S ? "kernel" : "user"); - - reg = (unsigned long *) __debug_frame; - for (loop = 0; loop < NR_PT_REGS; loop++) { - printk("%s %08lx", regnames[loop + 0], reg[loop + 0]); - - if (loop == NR_PT_REGS - 1 || loop % 5 == 4) - printk("\n"); - else - printk(" | "); - } - - gdbstub_printk("Process %s (pid: %d)\n", current->comm, current->pid); -} /* end gdbstub_show_regs() */ - -/*****************************************************************************/ -/* - * dump debugging regs - */ -static void __maybe_unused gdbstub_dump_debugregs(void) -{ - gdbstub_printk("DCR %08lx ", __debug_status.dcr); - gdbstub_printk("BRR %08lx\n", __debug_status.brr); - - gdbstub_printk("IBAR0 %08lx ", __get_ibar(0)); - gdbstub_printk("IBAR1 %08lx ", __get_ibar(1)); - gdbstub_printk("IBAR2 %08lx ", __get_ibar(2)); - gdbstub_printk("IBAR3 %08lx\n", __get_ibar(3)); - - gdbstub_printk("DBAR0 %08lx ", __get_dbar(0)); - gdbstub_printk("DBMR00 %08lx ", __get_dbmr0(0)); - gdbstub_printk("DBMR01 %08lx\n", __get_dbmr1(0)); - - gdbstub_printk("DBAR1 %08lx ", __get_dbar(1)); - gdbstub_printk("DBMR10 %08lx ", __get_dbmr0(1)); - gdbstub_printk("DBMR11 %08lx\n", __get_dbmr1(1)); - - gdbstub_printk("\n"); -} /* end gdbstub_dump_debugregs() */ - -/*****************************************************************************/ -/* - * dump the MMU state into a structure so that it can be accessed with GDB - */ -void gdbstub_get_mmu_state(void) -{ - asm volatile("movsg hsr0,%0" : "=r"(__debug_mmu.regs.hsr0)); - asm volatile("movsg pcsr,%0" : "=r"(__debug_mmu.regs.pcsr)); - asm volatile("movsg esr0,%0" : "=r"(__debug_mmu.regs.esr0)); - asm volatile("movsg ear0,%0" : "=r"(__debug_mmu.regs.ear0)); - asm volatile("movsg epcr0,%0" : "=r"(__debug_mmu.regs.epcr0)); - - /* read the protection / SAT registers */ - __debug_mmu.iamr[0].L = __get_IAMLR(0); - __debug_mmu.iamr[0].P = __get_IAMPR(0); - __debug_mmu.iamr[1].L = __get_IAMLR(1); - __debug_mmu.iamr[1].P = __get_IAMPR(1); - __debug_mmu.iamr[2].L = __get_IAMLR(2); - __debug_mmu.iamr[2].P = __get_IAMPR(2); - __debug_mmu.iamr[3].L = __get_IAMLR(3); - __debug_mmu.iamr[3].P = __get_IAMPR(3); - __debug_mmu.iamr[4].L = __get_IAMLR(4); - __debug_mmu.iamr[4].P = __get_IAMPR(4); - __debug_mmu.iamr[5].L = __get_IAMLR(5); - __debug_mmu.iamr[5].P = __get_IAMPR(5); - __debug_mmu.iamr[6].L = __get_IAMLR(6); - __debug_mmu.iamr[6].P = __get_IAMPR(6); - __debug_mmu.iamr[7].L = __get_IAMLR(7); - __debug_mmu.iamr[7].P = __get_IAMPR(7); - __debug_mmu.iamr[8].L = __get_IAMLR(8); - __debug_mmu.iamr[8].P = __get_IAMPR(8); - __debug_mmu.iamr[9].L = __get_IAMLR(9); - __debug_mmu.iamr[9].P = __get_IAMPR(9); - __debug_mmu.iamr[10].L = __get_IAMLR(10); - __debug_mmu.iamr[10].P = __get_IAMPR(10); - __debug_mmu.iamr[11].L = __get_IAMLR(11); - __debug_mmu.iamr[11].P = __get_IAMPR(11); - __debug_mmu.iamr[12].L = __get_IAMLR(12); - __debug_mmu.iamr[12].P = __get_IAMPR(12); - __debug_mmu.iamr[13].L = __get_IAMLR(13); - __debug_mmu.iamr[13].P = __get_IAMPR(13); - __debug_mmu.iamr[14].L = __get_IAMLR(14); - __debug_mmu.iamr[14].P = __get_IAMPR(14); - __debug_mmu.iamr[15].L = __get_IAMLR(15); - __debug_mmu.iamr[15].P = __get_IAMPR(15); - - __debug_mmu.damr[0].L = __get_DAMLR(0); - __debug_mmu.damr[0].P = __get_DAMPR(0); - __debug_mmu.damr[1].L = __get_DAMLR(1); - __debug_mmu.damr[1].P = __get_DAMPR(1); - __debug_mmu.damr[2].L = __get_DAMLR(2); - __debug_mmu.damr[2].P = __get_DAMPR(2); - __debug_mmu.damr[3].L = __get_DAMLR(3); - __debug_mmu.damr[3].P = __get_DAMPR(3); - __debug_mmu.damr[4].L = __get_DAMLR(4); - __debug_mmu.damr[4].P = __get_DAMPR(4); - __debug_mmu.damr[5].L = __get_DAMLR(5); - __debug_mmu.damr[5].P = __get_DAMPR(5); - __debug_mmu.damr[6].L = __get_DAMLR(6); - __debug_mmu.damr[6].P = __get_DAMPR(6); - __debug_mmu.damr[7].L = __get_DAMLR(7); - __debug_mmu.damr[7].P = __get_DAMPR(7); - __debug_mmu.damr[8].L = __get_DAMLR(8); - __debug_mmu.damr[8].P = __get_DAMPR(8); - __debug_mmu.damr[9].L = __get_DAMLR(9); - __debug_mmu.damr[9].P = __get_DAMPR(9); - __debug_mmu.damr[10].L = __get_DAMLR(10); - __debug_mmu.damr[10].P = __get_DAMPR(10); - __debug_mmu.damr[11].L = __get_DAMLR(11); - __debug_mmu.damr[11].P = __get_DAMPR(11); - __debug_mmu.damr[12].L = __get_DAMLR(12); - __debug_mmu.damr[12].P = __get_DAMPR(12); - __debug_mmu.damr[13].L = __get_DAMLR(13); - __debug_mmu.damr[13].P = __get_DAMPR(13); - __debug_mmu.damr[14].L = __get_DAMLR(14); - __debug_mmu.damr[14].P = __get_DAMPR(14); - __debug_mmu.damr[15].L = __get_DAMLR(15); - __debug_mmu.damr[15].P = __get_DAMPR(15); - -#ifdef CONFIG_MMU - do { - /* read the DAT entries from the TLB */ - struct __debug_amr *p; - int loop; - - asm volatile("movsg tplr,%0" : "=r"(__debug_mmu.regs.tplr)); - asm volatile("movsg tppr,%0" : "=r"(__debug_mmu.regs.tppr)); - asm volatile("movsg tpxr,%0" : "=r"(__debug_mmu.regs.tpxr)); - asm volatile("movsg cxnr,%0" : "=r"(__debug_mmu.regs.cxnr)); - - p = __debug_mmu.tlb; - - /* way 0 */ - asm volatile("movgs %0,tpxr" :: "r"(0 << TPXR_WAY_SHIFT)); - for (loop = 0; loop < 64; loop++) { - asm volatile("tlbpr %0,gr0,#1,#0" :: "r"(loop << PAGE_SHIFT)); - asm volatile("movsg tplr,%0" : "=r"(p->L)); - asm volatile("movsg tppr,%0" : "=r"(p->P)); - p++; - } - - /* way 1 */ - asm volatile("movgs %0,tpxr" :: "r"(1 << TPXR_WAY_SHIFT)); - for (loop = 0; loop < 64; loop++) { - asm volatile("tlbpr %0,gr0,#1,#0" :: "r"(loop << PAGE_SHIFT)); - asm volatile("movsg tplr,%0" : "=r"(p->L)); - asm volatile("movsg tppr,%0" : "=r"(p->P)); - p++; - } - - asm volatile("movgs %0,tplr" :: "r"(__debug_mmu.regs.tplr)); - asm volatile("movgs %0,tppr" :: "r"(__debug_mmu.regs.tppr)); - asm volatile("movgs %0,tpxr" :: "r"(__debug_mmu.regs.tpxr)); - } while(0); -#endif - -} /* end gdbstub_get_mmu_state() */ - -/* - * handle general query commands of the form 'qXXXXX' - */ -static void gdbstub_handle_query(void) -{ - if (strcmp(input_buffer, "qAttached") == 0) { - /* return current thread ID */ - sprintf(output_buffer, "1"); - return; - } - - if (strcmp(input_buffer, "qC") == 0) { - /* return current thread ID */ - sprintf(output_buffer, "QC 0"); - return; - } - - if (strcmp(input_buffer, "qOffsets") == 0) { - /* return relocation offset of text and data segments */ - sprintf(output_buffer, "Text=0;Data=0;Bss=0"); - return; - } - - if (strcmp(input_buffer, "qSymbol::") == 0) { - sprintf(output_buffer, "OK"); - return; - } - - if (strcmp(input_buffer, "qSupported") == 0) { - /* query of supported features */ - sprintf(output_buffer, "PacketSize=%u;ReverseContinue-;ReverseStep-", - sizeof(input_buffer)); - return; - } - - gdbstub_strcpy(output_buffer,"E01"); -} - -/*****************************************************************************/ -/* - * handle event interception and GDB remote protocol processing - * - on entry: - * PSR.ET==0, PSR.S==1 and the CPU is in debug mode - * __debug_frame points to the saved registers - * __frame points to the kernel mode exception frame, if it was in kernel - * mode when the break happened - */ -void gdbstub(int sigval) -{ - unsigned long addr, length, loop, dbar, temp, temp2, temp3; - uint32_t zero; - char *ptr; - int flush_cache = 0; - - LEDS(0x5000); - - if (sigval < 0) { -#ifndef CONFIG_GDBSTUB_IMMEDIATE - /* return immediately if GDB immediate activation option not set */ - return; -#else - sigval = SIGINT; -#endif - } - - save_user_regs(&__debug_frame0->uc); - -#if 0 - gdbstub_printk("--> gdbstub() %08x %p %08x %08x\n", - __debug_frame->pc, - __debug_frame, - __debug_regs->brr, - __debug_regs->bpsr); -// gdbstub_show_regs(); -#endif - - LEDS(0x5001); - - /* if we were interrupted by input on the serial gdbstub serial port, - * restore the context prior to the interrupt so that we return to that - * directly - */ - temp = (unsigned long) __entry_kerneltrap_table; - temp2 = (unsigned long) __entry_usertrap_table; - temp3 = __debug_frame->pc & ~15; - - if (temp3 == temp + TBR_TT_INTERRUPT_15 || - temp3 == temp2 + TBR_TT_INTERRUPT_15 - ) { - asm volatile("movsg pcsr,%0" : "=r"(__debug_frame->pc)); - __debug_frame->psr |= PSR_ET; - __debug_frame->psr &= ~PSR_S; - if (__debug_frame->psr & PSR_PS) - __debug_frame->psr |= PSR_S; - __debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12; - __debug_status.brr |= BRR_EB; - sigval = SIGINT; - } - - /* handle the decrement timer going off (FR451 only) */ - if (temp3 == temp + TBR_TT_DECREMENT_TIMER || - temp3 == temp2 + TBR_TT_DECREMENT_TIMER - ) { - asm volatile("movgs %0,timerd" :: "r"(10000000)); - asm volatile("movsg pcsr,%0" : "=r"(__debug_frame->pc)); - __debug_frame->psr |= PSR_ET; - __debug_frame->psr &= ~PSR_S; - if (__debug_frame->psr & PSR_PS) - __debug_frame->psr |= PSR_S; - __debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12; - __debug_status.brr |= BRR_EB; - sigval = SIGXCPU; - } - - LEDS(0x5002); - - /* after a BREAK insn, the PC lands on the far side of it */ - if (__debug_status.brr & BRR_SB) - gdbstub_check_breakpoint(); - - LEDS(0x5003); - - /* handle attempts to write console data via GDB "O" commands */ - if (__debug_frame->pc == (unsigned long) gdbstub_console_write + 4) { - __gdbstub_console_write((struct console *) __debug_frame->gr8, - (const char *) __debug_frame->gr9, - (unsigned) __debug_frame->gr10); - goto done; - } - - if (gdbstub_rx_unget) { - sigval = SIGINT; - goto packet_waiting; - } - - if (!sigval) - sigval = gdbstub_compute_signal(__debug_status.brr); - - LEDS(0x5004); - - /* send a message to the debugger's user saying what happened if it may - * not be clear cut (we can't map exceptions onto signals properly) - */ - if (sigval != SIGINT && sigval != SIGTRAP && sigval != SIGILL) { - static const char title[] = "Break "; - static const char crlf[] = "\r\n"; - unsigned long brr = __debug_status.brr; - char hx; - - ptr = output_buffer; - *ptr++ = 'O'; - ptr = mem2hex(title, ptr, sizeof(title) - 1,0); - - hx = hex_asc_hi(brr >> 24); - ptr = hex_byte_pack(ptr, hx); - hx = hex_asc_lo(brr >> 24); - ptr = hex_byte_pack(ptr, hx); - hx = hex_asc_hi(brr >> 16); - ptr = hex_byte_pack(ptr, hx); - hx = hex_asc_lo(brr >> 16); - ptr = hex_byte_pack(ptr, hx); - hx = hex_asc_hi(brr >> 8); - ptr = hex_byte_pack(ptr, hx); - hx = hex_asc_lo(brr >> 8); - ptr = hex_byte_pack(ptr, hx); - hx = hex_asc_hi(brr); - ptr = hex_byte_pack(ptr, hx); - hx = hex_asc_lo(brr); - ptr = hex_byte_pack(ptr, hx); - - ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0); - *ptr = 0; - gdbstub_send_packet(output_buffer); /* send it off... */ - } - - LEDS(0x5005); - - /* tell the debugger that an exception has occurred */ - ptr = output_buffer; - - /* Send trap type (converted to signal) */ - *ptr++ = 'T'; - ptr = hex_byte_pack(ptr, sigval); - - /* Send Error PC */ - ptr = hex_byte_pack(ptr, GDB_REG_PC); - *ptr++ = ':'; - ptr = mem2hex(&__debug_frame->pc, ptr, 4, 0); - *ptr++ = ';'; - - /* - * Send frame pointer - */ - ptr = hex_byte_pack(ptr, GDB_REG_FP); - *ptr++ = ':'; - ptr = mem2hex(&__debug_frame->fp, ptr, 4, 0); - *ptr++ = ';'; - - /* - * Send stack pointer - */ - ptr = hex_byte_pack(ptr, GDB_REG_SP); - *ptr++ = ':'; - ptr = mem2hex(&__debug_frame->sp, ptr, 4, 0); - *ptr++ = ';'; - - *ptr++ = 0; - gdbstub_send_packet(output_buffer); /* send it off... */ - - LEDS(0x5006); - - packet_waiting: - gdbstub_get_mmu_state(); - - /* wait for input from remote GDB */ - while (1) { - output_buffer[0] = 0; - - LEDS(0x5007); - gdbstub_recv_packet(input_buffer); - LEDS(0x5600 | input_buffer[0]); - - switch (input_buffer[0]) { - /* request repeat of last signal number */ - case '?': - output_buffer[0] = 'S'; - output_buffer[1] = hex_asc_hi(sigval); - output_buffer[2] = hex_asc_lo(sigval); - output_buffer[3] = 0; - break; - - case 'd': - /* toggle debug flag */ - break; - - /* return the value of the CPU registers - * - GR0, GR1, GR2, GR3, GR4, GR5, GR6, GR7, - * - GR8, GR9, GR10, GR11, GR12, GR13, GR14, GR15, - * - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23, - * - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31, - * - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39, - * - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47, - * - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55, - * - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63, - * - FP0, FP1, FP2, FP3, FP4, FP5, FP6, FP7, - * - FP8, FP9, FP10, FP11, FP12, FP13, FP14, FP15, - * - FP16, FP17, FP18, FP19, FP20, FP21, FP22, FP23, - * - FP24, FP25, FP26, FP27, FP28, FP29, FP30, FP31, - * - FP32, FP33, FP34, FP35, FP36, FP37, FP38, FP39, - * - FP40, FP41, FP42, FP43, FP44, FP45, FP46, FP47, - * - FP48, FP49, FP50, FP51, FP52, FP53, FP54, FP55, - * - FP56, FP57, FP58, FP59, FP60, FP61, FP62, FP63, - * - PC, PSR, CCR, CCCR, - * - _X132, _X133, _X134 - * - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3, - * - _X141, _X142, _X143, _X144, - * - LR, LCR - */ - case 'g': - zero = 0; - ptr = output_buffer; - - /* deal with GR0, GR1-GR27, GR28-GR31, GR32-GR63 */ - ptr = mem2hex(&zero, ptr, 4, 0); - - for (loop = 1; loop <= 27; loop++) - ptr = mem2hex(&__debug_user_context->i.gr[loop], ptr, 4, 0); - temp = (unsigned long) __frame; - ptr = mem2hex(&temp, ptr, 4, 0); - ptr = mem2hex(&__debug_user_context->i.gr[29], ptr, 4, 0); - ptr = mem2hex(&__debug_user_context->i.gr[30], ptr, 4, 0); -#ifdef CONFIG_MMU - ptr = mem2hex(&__debug_user_context->i.gr[31], ptr, 4, 0); -#else - temp = (unsigned long) __debug_frame; - ptr = mem2hex(&temp, ptr, 4, 0); -#endif - - for (loop = 32; loop <= 63; loop++) - ptr = mem2hex(&__debug_user_context->i.gr[loop], ptr, 4, 0); - - /* deal with FR0-FR63 */ - for (loop = 0; loop <= 63; loop++) - ptr = mem2hex(&__debug_user_context->f.fr[loop], ptr, 4, 0); - - /* deal with special registers */ - ptr = mem2hex(&__debug_frame->pc, ptr, 4, 0); - ptr = mem2hex(&__debug_frame->psr, ptr, 4, 0); - ptr = mem2hex(&__debug_frame->ccr, ptr, 4, 0); - ptr = mem2hex(&__debug_frame->cccr, ptr, 4, 0); - ptr = mem2hex(&zero, ptr, 4, 0); - ptr = mem2hex(&zero, ptr, 4, 0); - ptr = mem2hex(&zero, ptr, 4, 0); - ptr = mem2hex(&__debug_frame->tbr, ptr, 4, 0); - ptr = mem2hex(&__debug_status.brr , ptr, 4, 0); - - asm volatile("movsg dbar0,%0" : "=r"(dbar)); - ptr = mem2hex(&dbar, ptr, 4, 0); - asm volatile("movsg dbar1,%0" : "=r"(dbar)); - ptr = mem2hex(&dbar, ptr, 4, 0); - asm volatile("movsg dbar2,%0" : "=r"(dbar)); - ptr = mem2hex(&dbar, ptr, 4, 0); - asm volatile("movsg dbar3,%0" : "=r"(dbar)); - ptr = mem2hex(&dbar, ptr, 4, 0); - - asm volatile("movsg scr0,%0" : "=r"(dbar)); - ptr = mem2hex(&dbar, ptr, 4, 0); - asm volatile("movsg scr1,%0" : "=r"(dbar)); - ptr = mem2hex(&dbar, ptr, 4, 0); - asm volatile("movsg scr2,%0" : "=r"(dbar)); - ptr = mem2hex(&dbar, ptr, 4, 0); - asm volatile("movsg scr3,%0" : "=r"(dbar)); - ptr = mem2hex(&dbar, ptr, 4, 0); - - ptr = mem2hex(&__debug_frame->lr, ptr, 4, 0); - ptr = mem2hex(&__debug_frame->lcr, ptr, 4, 0); - - ptr = mem2hex(&__debug_frame->iacc0, ptr, 8, 0); - - ptr = mem2hex(&__debug_user_context->f.fsr[0], ptr, 4, 0); - - for (loop = 0; loop <= 7; loop++) - ptr = mem2hex(&__debug_user_context->f.acc[loop], ptr, 4, 0); - - ptr = mem2hex(&__debug_user_context->f.accg, ptr, 8, 0); - - for (loop = 0; loop <= 1; loop++) - ptr = mem2hex(&__debug_user_context->f.msr[loop], ptr, 4, 0); - - ptr = mem2hex(&__debug_frame->gner0, ptr, 4, 0); - ptr = mem2hex(&__debug_frame->gner1, ptr, 4, 0); - - ptr = mem2hex(&__debug_user_context->f.fner[0], ptr, 4, 0); - ptr = mem2hex(&__debug_user_context->f.fner[1], ptr, 4, 0); - - break; - - /* set the values of the CPU registers */ - case 'G': - ptr = &input_buffer[1]; - - /* deal with GR0, GR1-GR27, GR28-GR31, GR32-GR63 */ - ptr = hex2mem(ptr, &temp, 4); - - for (loop = 1; loop <= 27; loop++) - ptr = hex2mem(ptr, &__debug_user_context->i.gr[loop], 4); - - ptr = hex2mem(ptr, &temp, 4); - __frame = (struct pt_regs *) temp; - ptr = hex2mem(ptr, &__debug_frame->gr29, 4); - ptr = hex2mem(ptr, &__debug_frame->gr30, 4); -#ifdef CONFIG_MMU - ptr = hex2mem(ptr, &__debug_frame->gr31, 4); -#else - ptr = hex2mem(ptr, &temp, 4); -#endif - - for (loop = 32; loop <= 63; loop++) - ptr = hex2mem(ptr, &__debug_user_context->i.gr[loop], 4); - - /* deal with FR0-FR63 */ - for (loop = 0; loop <= 63; loop++) - ptr = mem2hex(&__debug_user_context->f.fr[loop], ptr, 4, 0); - - /* deal with special registers */ - ptr = hex2mem(ptr, &__debug_frame->pc, 4); - ptr = hex2mem(ptr, &__debug_frame->psr, 4); - ptr = hex2mem(ptr, &__debug_frame->ccr, 4); - ptr = hex2mem(ptr, &__debug_frame->cccr,4); - - for (loop = 132; loop <= 140; loop++) - ptr = hex2mem(ptr, &temp, 4); - - ptr = hex2mem(ptr, &temp, 4); - asm volatile("movgs %0,scr0" :: "r"(temp)); - ptr = hex2mem(ptr, &temp, 4); - asm volatile("movgs %0,scr1" :: "r"(temp)); - ptr = hex2mem(ptr, &temp, 4); - asm volatile("movgs %0,scr2" :: "r"(temp)); - ptr = hex2mem(ptr, &temp, 4); - asm volatile("movgs %0,scr3" :: "r"(temp)); - - ptr = hex2mem(ptr, &__debug_frame->lr, 4); - ptr = hex2mem(ptr, &__debug_frame->lcr, 4); - - ptr = hex2mem(ptr, &__debug_frame->iacc0, 8); - - ptr = hex2mem(ptr, &__debug_user_context->f.fsr[0], 4); - - for (loop = 0; loop <= 7; loop++) - ptr = hex2mem(ptr, &__debug_user_context->f.acc[loop], 4); - - ptr = hex2mem(ptr, &__debug_user_context->f.accg, 8); - - for (loop = 0; loop <= 1; loop++) - ptr = hex2mem(ptr, &__debug_user_context->f.msr[loop], 4); - - ptr = hex2mem(ptr, &__debug_frame->gner0, 4); - ptr = hex2mem(ptr, &__debug_frame->gner1, 4); - - ptr = hex2mem(ptr, &__debug_user_context->f.fner[0], 4); - ptr = hex2mem(ptr, &__debug_user_context->f.fner[1], 4); - - gdbstub_strcpy(output_buffer,"OK"); - break; - - /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */ - case 'm': - ptr = &input_buffer[1]; - - if (hexToInt(&ptr, &addr) && - *ptr++ == ',' && - hexToInt(&ptr, &length) - ) { - if (mem2hex((char *)addr, output_buffer, length, 1)) - break; - gdbstub_strcpy (output_buffer, "E03"); - } - else { - gdbstub_strcpy(output_buffer,"E01"); - } - break; - - /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */ - case 'M': - ptr = &input_buffer[1]; - - if (hexToInt(&ptr, &addr) && - *ptr++ == ',' && - hexToInt(&ptr, &length) && - *ptr++ == ':' - ) { - if (hex2mem(ptr, (char *)addr, length)) { - gdbstub_strcpy(output_buffer, "OK"); - } - else { - gdbstub_strcpy(output_buffer, "E03"); - } - } - else - gdbstub_strcpy(output_buffer, "E02"); - - flush_cache = 1; - break; - - /* pNN: Read value of reg N and return it */ - case 'p': - /* return no value, indicating that we don't support - * this command and that gdb should use 'g' instead */ - break; - - /* PNN,=RRRRRRRR: Write value R to reg N return OK */ - case 'P': - ptr = &input_buffer[1]; - - if (!hexToInt(&ptr, &addr) || - *ptr++ != '=' || - !hexToInt(&ptr, &temp) - ) { - gdbstub_strcpy(output_buffer, "E01"); - break; - } - - temp2 = 1; - switch (addr) { - case GDB_REG_GR(0): - break; - case GDB_REG_GR(1) ... GDB_REG_GR(63): - __debug_user_context->i.gr[addr - GDB_REG_GR(0)] = temp; - break; - case GDB_REG_FR(0) ... GDB_REG_FR(63): - __debug_user_context->f.fr[addr - GDB_REG_FR(0)] = temp; - break; - case GDB_REG_PC: - __debug_user_context->i.pc = temp; - break; - case GDB_REG_PSR: - __debug_user_context->i.psr = temp; - break; - case GDB_REG_CCR: - __debug_user_context->i.ccr = temp; - break; - case GDB_REG_CCCR: - __debug_user_context->i.cccr = temp; - break; - case GDB_REG_BRR: - __debug_status.brr = temp; - break; - case GDB_REG_LR: - __debug_user_context->i.lr = temp; - break; - case GDB_REG_LCR: - __debug_user_context->i.lcr = temp; - break; - case GDB_REG_FSR0: - __debug_user_context->f.fsr[0] = temp; - break; - case GDB_REG_ACC(0) ... GDB_REG_ACC(7): - __debug_user_context->f.acc[addr - GDB_REG_ACC(0)] = temp; - break; - case GDB_REG_ACCG(0): - *(uint32_t *) &__debug_user_context->f.accg[0] = temp; - break; - case GDB_REG_ACCG(4): - *(uint32_t *) &__debug_user_context->f.accg[4] = temp; - break; - case GDB_REG_MSR(0) ... GDB_REG_MSR(1): - __debug_user_context->f.msr[addr - GDB_REG_MSR(0)] = temp; - break; - case GDB_REG_GNER(0) ... GDB_REG_GNER(1): - __debug_user_context->i.gner[addr - GDB_REG_GNER(0)] = temp; - break; - case GDB_REG_FNER(0) ... GDB_REG_FNER(1): - __debug_user_context->f.fner[addr - GDB_REG_FNER(0)] = temp; - break; - default: - temp2 = 0; - break; - } - - if (temp2) { - gdbstub_strcpy(output_buffer, "OK"); - } - else { - gdbstub_strcpy(output_buffer, "E02"); - } - break; - - /* cAA..AA Continue at address AA..AA(optional) */ - case 'c': - /* try to read optional parameter, pc unchanged if no parm */ - ptr = &input_buffer[1]; - if (hexToInt(&ptr, &addr)) - __debug_frame->pc = addr; - goto done; - - /* kill the program */ - case 'k' : - goto done; /* just continue */ - - /* detach */ - case 'D': - gdbstub_strcpy(output_buffer, "OK"); - break; - - /* reset the whole machine (FIXME: system dependent) */ - case 'r': - break; - - - /* step to next instruction */ - case 's': - __debug_regs->dcr |= DCR_SE; - __debug_status.dcr |= DCR_SE; - goto done; - - /* extended command */ - case 'v': - if (strcmp(input_buffer, "vCont?") == 0) { - output_buffer[0] = 0; - break; - } - goto unsupported_cmd; - - /* set baud rate (bBB) */ - case 'b': - ptr = &input_buffer[1]; - if (!hexToInt(&ptr, &temp)) { - gdbstub_strcpy(output_buffer,"B01"); - break; - } - - if (temp) { - /* ack before changing speed */ - gdbstub_send_packet("OK"); - gdbstub_set_baud(temp); - } - break; - - /* set breakpoint */ - case 'Z': - ptr = &input_buffer[1]; - - if (!hexToInt(&ptr,&temp) || *ptr++ != ',' || - !hexToInt(&ptr,&addr) || *ptr++ != ',' || - !hexToInt(&ptr,&length) - ) { - gdbstub_strcpy(output_buffer,"E01"); - break; - } - - if (temp >= 5) { - gdbstub_strcpy(output_buffer,"E03"); - break; - } - - if (gdbstub_set_breakpoint(temp, addr, length) < 0) { - gdbstub_strcpy(output_buffer,"E03"); - break; - } - - if (temp == 0) - flush_cache = 1; /* soft bkpt by modified memory */ - - gdbstub_strcpy(output_buffer,"OK"); - break; - - /* clear breakpoint */ - case 'z': - ptr = &input_buffer[1]; - - if (!hexToInt(&ptr,&temp) || *ptr++ != ',' || - !hexToInt(&ptr,&addr) || *ptr++ != ',' || - !hexToInt(&ptr,&length) - ) { - gdbstub_strcpy(output_buffer,"E01"); - break; - } - - if (temp >= 5) { - gdbstub_strcpy(output_buffer,"E03"); - break; - } - - if (gdbstub_clear_breakpoint(temp, addr, length) < 0) { - gdbstub_strcpy(output_buffer,"E03"); - break; - } - - if (temp == 0) - flush_cache = 1; /* soft bkpt by modified memory */ - - gdbstub_strcpy(output_buffer,"OK"); - break; - - /* Thread-setting packet */ - case 'H': - gdbstub_strcpy(output_buffer, "OK"); - break; - - case 'q': - gdbstub_handle_query(); - break; - - default: - unsupported_cmd: - gdbstub_proto("### GDB Unsupported Cmd '%s'\n",input_buffer); - gdbstub_strcpy(output_buffer,"E01"); - break; - } - - /* reply to the request */ - LEDS(0x5009); - gdbstub_send_packet(output_buffer); - } - - done: - restore_user_regs(&__debug_frame0->uc); - - //gdbstub_dump_debugregs(); - //gdbstub_printk("<-- gdbstub() %08x\n", __debug_frame->pc); - - /* need to flush the instruction cache before resuming, as we may have - * deposited a breakpoint, and the icache probably has no way of - * knowing that a data ref to some location may have changed something - * that is in the instruction cache. NB: We flush both caches, just to - * be sure... - */ - - /* note: flushing the icache will clobber EAR0 on the FR451 */ - if (flush_cache) - gdbstub_purge_cache(); - - LEDS(0x5666); - -} /* end gdbstub() */ - -/*****************************************************************************/ -/* - * initialise the GDB stub - */ -void __init gdbstub_init(void) -{ -#ifdef CONFIG_GDBSTUB_IMMEDIATE - unsigned char ch; - int ret; -#endif - - gdbstub_printk("%s", gdbstub_banner); - - gdbstub_io_init(); - - /* try to talk to GDB (or anyone insane enough to want to type GDB protocol by hand) */ - gdbstub_proto("### GDB Tx ACK\n"); - gdbstub_tx_char('+'); /* 'hello world' */ - -#ifdef CONFIG_GDBSTUB_IMMEDIATE - gdbstub_printk("GDB Stub waiting for packet\n"); - - /* - * In case GDB is started before us, ack any packets - * (presumably "$?#xx") sitting there. - */ - do { gdbstub_rx_char(&ch, 0); } while (ch != '$'); - do { gdbstub_rx_char(&ch, 0); } while (ch != '#'); - do { ret = gdbstub_rx_char(&ch, 0); } while (ret != 0); /* eat first csum byte */ - do { ret = gdbstub_rx_char(&ch, 0); } while (ret != 0); /* eat second csum byte */ - - gdbstub_proto("### GDB Tx NAK\n"); - gdbstub_tx_char('-'); /* nak it */ - -#else - gdbstub_printk("GDB Stub set\n"); -#endif - -#if 0 - /* send banner */ - ptr = output_buffer; - *ptr++ = 'O'; - ptr = mem2hex(gdbstub_banner, ptr, sizeof(gdbstub_banner) - 1, 0); - gdbstub_send_packet(output_buffer); -#endif -#if defined(CONFIG_GDB_CONSOLE) && defined(CONFIG_GDBSTUB_IMMEDIATE) - register_console(&gdbstub_console); -#endif - -} /* end gdbstub_init() */ - -/*****************************************************************************/ -/* - * register the console at a more appropriate time - */ -#if defined (CONFIG_GDB_CONSOLE) && !defined(CONFIG_GDBSTUB_IMMEDIATE) -static int __init gdbstub_postinit(void) -{ - printk("registering console\n"); - register_console(&gdbstub_console); - return 0; -} /* end gdbstub_postinit() */ - -__initcall(gdbstub_postinit); -#endif - -/*****************************************************************************/ -/* - * send an exit message to GDB - */ -void gdbstub_exit(int status) -{ - unsigned char checksum; - int count; - unsigned char ch; - - sprintf(output_buffer,"W%02x",status&0xff); - - gdbstub_tx_char('$'); - checksum = 0; - count = 0; - - while ((ch = output_buffer[count]) != 0) { - gdbstub_tx_char(ch); - checksum += ch; - count += 1; - } - - gdbstub_tx_char('#'); - gdbstub_tx_char(hex_asc_hi(checksum)); - gdbstub_tx_char(hex_asc_lo(checksum)); - - /* make sure the output is flushed, or else RedBoot might clobber it */ - gdbstub_tx_char('-'); - gdbstub_tx_flush(); - -} /* end gdbstub_exit() */ - -/*****************************************************************************/ -/* - * GDB wants to call malloc() and free() to allocate memory for calling kernel - * functions directly from its command line - */ -static void *malloc(size_t size) __maybe_unused; -static void *malloc(size_t size) -{ - return kmalloc(size, GFP_ATOMIC); -} - -static void free(void *p) __maybe_unused; -static void free(void *p) -{ - kfree(p); -} - -static uint32_t ___get_HSR0(void) __maybe_unused; -static uint32_t ___get_HSR0(void) -{ - return __get_HSR(0); -} - -static uint32_t ___set_HSR0(uint32_t x) __maybe_unused; -static uint32_t ___set_HSR0(uint32_t x) -{ - __set_HSR(0, x); - return __get_HSR(0); -} diff --git a/arch/frv/kernel/head-mmu-fr451.S b/arch/frv/kernel/head-mmu-fr451.S deleted file mode 100644 index 98f87d586e59..000000000000 --- a/arch/frv/kernel/head-mmu-fr451.S +++ /dev/null @@ -1,374 +0,0 @@ -/* head-mmu-fr451.S: FR451 mmu-linux specific bits of initialisation - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/init.h> -#include <linux/threads.h> -#include <linux/linkage.h> -#include <asm/ptrace.h> -#include <asm/page.h> -#include <asm/mem-layout.h> -#include <asm/spr-regs.h> -#include <asm/mb86943a.h> -#include "head.inc" - - -#define __400_DBR0 0xfe000e00 -#define __400_DBR1 0xfe000e08 -#define __400_DBR2 0xfe000e10 -#define __400_DBR3 0xfe000e18 -#define __400_DAM0 0xfe000f00 -#define __400_DAM1 0xfe000f08 -#define __400_DAM2 0xfe000f10 -#define __400_DAM3 0xfe000f18 -#define __400_LGCR 0xfe000010 -#define __400_LCR 0xfe000100 -#define __400_LSBR 0xfe000c00 - - __INIT - .balign 4 - -############################################################################### -# -# describe the position and layout of the SDRAM controller registers -# -# ENTRY: EXIT: -# GR5 - cacheline size -# GR11 - displacement of 2nd SDRAM addr reg from GR14 -# GR12 - displacement of 3rd SDRAM addr reg from GR14 -# GR13 - displacement of 4th SDRAM addr reg from GR14 -# GR14 - address of 1st SDRAM addr reg -# GR15 - amount to shift address by to match SDRAM addr reg -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# CC0 - T if DBR0 is present -# CC1 - T if DBR1 is present -# CC2 - T if DBR2 is present -# CC3 - T if DBR3 is present -# -############################################################################### - .globl __head_fr451_describe_sdram -__head_fr451_describe_sdram: - sethi.p %hi(__400_DBR0),gr14 - setlo %lo(__400_DBR0),gr14 - setlos.p #__400_DBR1-__400_DBR0,gr11 - setlos #__400_DBR2-__400_DBR0,gr12 - setlos.p #__400_DBR3-__400_DBR0,gr13 - setlos #32,gr5 ; cacheline size - setlos.p #0,gr15 ; amount to shift addr reg by - setlos #0x00ff,gr4 - movgs gr4,cccr ; extant DARS/DAMK regs - bralr - -############################################################################### -# -# rearrange the bus controller registers -# -# ENTRY: EXIT: -# GR26 &__head_reference [saved] -# GR30 LED address revised LED address -# -############################################################################### - .globl __head_fr451_set_busctl -__head_fr451_set_busctl: - sethi.p %hi(__400_LGCR),gr4 - setlo %lo(__400_LGCR),gr4 - sethi.p %hi(__400_LSBR),gr10 - setlo %lo(__400_LSBR),gr10 - sethi.p %hi(__400_LCR),gr11 - setlo %lo(__400_LCR),gr11 - - # set the bus controller - ldi @(gr4,#0),gr5 - ori gr5,#0xff,gr5 ; make sure all chip-selects are enabled - sti gr5,@(gr4,#0) - - sethi.p %hi(__region_CS1),gr4 - setlo %lo(__region_CS1),gr4 - sethi.p %hi(__region_CS1_M),gr5 - setlo %lo(__region_CS1_M),gr5 - sethi.p %hi(__region_CS1_C),gr6 - setlo %lo(__region_CS1_C),gr6 - sti gr4,@(gr10,#1*0x08) - sti gr5,@(gr10,#1*0x08+0x100) - sti gr6,@(gr11,#1*0x08) - sethi.p %hi(__region_CS2),gr4 - setlo %lo(__region_CS2),gr4 - sethi.p %hi(__region_CS2_M),gr5 - setlo %lo(__region_CS2_M),gr5 - sethi.p %hi(__region_CS2_C),gr6 - setlo %lo(__region_CS2_C),gr6 - sti gr4,@(gr10,#2*0x08) - sti gr5,@(gr10,#2*0x08+0x100) - sti gr6,@(gr11,#2*0x08) - sethi.p %hi(__region_CS3),gr4 - setlo %lo(__region_CS3),gr4 - sethi.p %hi(__region_CS3_M),gr5 - setlo %lo(__region_CS3_M),gr5 - sethi.p %hi(__region_CS3_C),gr6 - setlo %lo(__region_CS3_C),gr6 - sti gr4,@(gr10,#3*0x08) - sti gr5,@(gr10,#3*0x08+0x100) - sti gr6,@(gr11,#3*0x08) - sethi.p %hi(__region_CS4),gr4 - setlo %lo(__region_CS4),gr4 - sethi.p %hi(__region_CS4_M),gr5 - setlo %lo(__region_CS4_M),gr5 - sethi.p %hi(__region_CS4_C),gr6 - setlo %lo(__region_CS4_C),gr6 - sti gr4,@(gr10,#4*0x08) - sti gr5,@(gr10,#4*0x08+0x100) - sti gr6,@(gr11,#4*0x08) - sethi.p %hi(__region_CS5),gr4 - setlo %lo(__region_CS5),gr4 - sethi.p %hi(__region_CS5_M),gr5 - setlo %lo(__region_CS5_M),gr5 - sethi.p %hi(__region_CS5_C),gr6 - setlo %lo(__region_CS5_C),gr6 - sti gr4,@(gr10,#5*0x08) - sti gr5,@(gr10,#5*0x08+0x100) - sti gr6,@(gr11,#5*0x08) - sethi.p %hi(__region_CS6),gr4 - setlo %lo(__region_CS6),gr4 - sethi.p %hi(__region_CS6_M),gr5 - setlo %lo(__region_CS6_M),gr5 - sethi.p %hi(__region_CS6_C),gr6 - setlo %lo(__region_CS6_C),gr6 - sti gr4,@(gr10,#6*0x08) - sti gr5,@(gr10,#6*0x08+0x100) - sti gr6,@(gr11,#6*0x08) - sethi.p %hi(__region_CS7),gr4 - setlo %lo(__region_CS7),gr4 - sethi.p %hi(__region_CS7_M),gr5 - setlo %lo(__region_CS7_M),gr5 - sethi.p %hi(__region_CS7_C),gr6 - setlo %lo(__region_CS7_C),gr6 - sti gr4,@(gr10,#7*0x08) - sti gr5,@(gr10,#7*0x08+0x100) - sti gr6,@(gr11,#7*0x08) - membar - bar - - # adjust LED bank address -#ifdef CONFIG_MB93091_VDK - sethi.p %hi(__region_CS2 + 0x01200004),gr30 - setlo %lo(__region_CS2 + 0x01200004),gr30 -#endif - bralr - -############################################################################### -# -# determine the total SDRAM size -# -# ENTRY: EXIT: -# GR25 - SDRAM size -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# -############################################################################### - .globl __head_fr451_survey_sdram -__head_fr451_survey_sdram: - sethi.p %hi(__400_DAM0),gr11 - setlo %lo(__400_DAM0),gr11 - sethi.p %hi(__400_DBR0),gr12 - setlo %lo(__400_DBR0),gr12 - - sethi.p %hi(0xfe000000),gr17 ; unused SDRAM DBR value - setlo %lo(0xfe000000),gr17 - setlos #0,gr25 - - ldi @(gr12,#0x00),gr4 ; DAR0 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS0 - ldi @(gr11,#0x00),gr6 ; DAM0: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS0: - - ldi @(gr12,#0x08),gr4 ; DAR1 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS1 - ldi @(gr11,#0x08),gr6 ; DAM1: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS1: - - ldi @(gr12,#0x10),gr4 ; DAR2 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS2 - ldi @(gr11,#0x10),gr6 ; DAM2: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS2: - - ldi @(gr12,#0x18),gr4 ; DAR3 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS3 - ldi @(gr11,#0x18),gr6 ; DAM3: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS3: - bralr - -############################################################################### -# -# set the protection map with the I/DAMPR registers -# -# ENTRY: EXIT: -# GR25 SDRAM size [saved] -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# -# -# Using this map: -# REGISTERS ADDRESS RANGE VIEW -# =============== ====================== =============================== -# IAMPR0/DAMPR0 0xC0000000-0xCFFFFFFF Cached kernel RAM Window -# DAMPR11 0xE0000000-0xFFFFFFFF Uncached I/O -# -############################################################################### - .globl __head_fr451_set_protection -__head_fr451_set_protection: - movsg lr,gr27 - - # set the I/O region protection registers for FR451 in MMU mode -#define PGPROT_IO xAMPRx_L|xAMPRx_M|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V - - sethi.p %hi(__region_IO),gr5 - setlo %lo(__region_IO),gr5 - setlos #PGPROT_IO|xAMPRx_SS_512Mb,gr4 - or gr4,gr5,gr4 - movgs gr5,damlr11 ; General I/O tile - movgs gr4,dampr11 - - # need to open a window onto at least part of the RAM for the kernel's use - sethi.p %hi(__sdram_base),gr8 - setlo %lo(__sdram_base),gr8 ; physical address - sethi.p %hi(__page_offset),gr9 - setlo %lo(__page_offset),gr9 ; virtual address - - setlos #xAMPRx_L|xAMPRx_M|xAMPRx_SS_256Mb|xAMPRx_S_KERNEL|xAMPRx_V,gr11 - or gr8,gr11,gr8 - - movgs gr9,iamlr0 ; mapped from real address 0 - movgs gr8,iampr0 ; cached kernel memory at 0xC0000000 - movgs gr9,damlr0 - movgs gr8,dampr0 - - # set a temporary mapping for the kernel running at address 0 until we've turned on the MMU - sethi.p %hi(__sdram_base),gr9 - setlo %lo(__sdram_base),gr9 ; virtual address - - and.p gr4,gr11,gr4 - and gr5,gr11,gr5 - or.p gr4,gr11,gr4 - or gr5,gr11,gr5 - - movgs gr9,iamlr1 ; mapped from real address 0 - movgs gr8,iampr1 ; cached kernel memory at 0x00000000 - movgs gr9,damlr1 - movgs gr8,dampr1 - - # we use DAMR2-10 for kmap_atomic(), cache flush and TLB management - # since the DAMLR regs are not going to change, we can set them now - # also set up IAMLR2 to the same as DAMLR5 - sethi.p %hi(KMAP_ATOMIC_PRIMARY_FRAME),gr4 - setlo %lo(KMAP_ATOMIC_PRIMARY_FRAME),gr4 - sethi.p %hi(PAGE_SIZE),gr5 - setlo %lo(PAGE_SIZE),gr5 - - movgs gr4,damlr2 - movgs gr4,iamlr2 - add gr4,gr5,gr4 - movgs gr4,damlr3 - add gr4,gr5,gr4 - movgs gr4,damlr4 - add gr4,gr5,gr4 - movgs gr4,damlr5 - add gr4,gr5,gr4 - movgs gr4,damlr6 - add gr4,gr5,gr4 - movgs gr4,damlr7 - add gr4,gr5,gr4 - movgs gr4,damlr8 - add gr4,gr5,gr4 - movgs gr4,damlr9 - add gr4,gr5,gr4 - movgs gr4,damlr10 - - movgs gr0,dampr2 - movgs gr0,dampr4 - movgs gr0,dampr5 - movgs gr0,dampr6 - movgs gr0,dampr7 - movgs gr0,dampr8 - movgs gr0,dampr9 - movgs gr0,dampr10 - - movgs gr0,iamlr3 - movgs gr0,iamlr4 - movgs gr0,iamlr5 - movgs gr0,iamlr6 - movgs gr0,iamlr7 - - movgs gr0,iampr2 - movgs gr0,iampr3 - movgs gr0,iampr4 - movgs gr0,iampr5 - movgs gr0,iampr6 - movgs gr0,iampr7 - - # start in TLB context 0 with the swapper's page tables - movgs gr0,cxnr - - sethi.p %hi(swapper_pg_dir),gr4 - setlo %lo(swapper_pg_dir),gr4 - sethi.p %hi(__page_offset),gr5 - setlo %lo(__page_offset),gr5 - sub gr4,gr5,gr4 - movgs gr4,ttbr - setlos #xAMPRx_L|xAMPRx_M|xAMPRx_SS_16Kb|xAMPRx_S|xAMPRx_C|xAMPRx_V,gr5 - or gr4,gr5,gr4 - movgs gr4,dampr3 - - # the FR451 also has an extra trap base register - movsg tbr,gr4 - movgs gr4,btbr - - LEDS 0x3300 - jmpl @(gr27,gr0) - -############################################################################### -# -# finish setting up the protection registers -# -############################################################################### - .globl __head_fr451_finalise_protection -__head_fr451_finalise_protection: - # turn on the timers as appropriate - movgs gr0,timerh - movgs gr0,timerl - movgs gr0,timerd - movsg hsr0,gr4 - sethi.p %hi(HSR0_ETMI),gr5 - setlo %lo(HSR0_ETMI),gr5 - or gr4,gr5,gr4 - movgs gr4,hsr0 - - # clear the TLB entry cache - movgs gr0,iamlr1 - movgs gr0,iampr1 - movgs gr0,damlr1 - movgs gr0,dampr1 - - # clear the PGE cache - sethi.p %hi(__flush_tlb_all),gr4 - setlo %lo(__flush_tlb_all),gr4 - jmpl @(gr4,gr0) diff --git a/arch/frv/kernel/head-uc-fr401.S b/arch/frv/kernel/head-uc-fr401.S deleted file mode 100644 index 438643cfa38e..000000000000 --- a/arch/frv/kernel/head-uc-fr401.S +++ /dev/null @@ -1,311 +0,0 @@ -/* head-uc-fr401.S: FR401/3/5 uc-linux specific bits of initialisation - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/init.h> -#include <linux/threads.h> -#include <linux/linkage.h> -#include <asm/ptrace.h> -#include <asm/page.h> -#include <asm/spr-regs.h> -#include <asm/mb86943a.h> -#include "head.inc" - - -#define __400_DBR0 0xfe000e00 -#define __400_DBR1 0xfe000e08 -#define __400_DBR2 0xfe000e10 /* not on FR401 */ -#define __400_DBR3 0xfe000e18 /* not on FR401 */ -#define __400_DAM0 0xfe000f00 -#define __400_DAM1 0xfe000f08 -#define __400_DAM2 0xfe000f10 /* not on FR401 */ -#define __400_DAM3 0xfe000f18 /* not on FR401 */ -#define __400_LGCR 0xfe000010 -#define __400_LCR 0xfe000100 -#define __400_LSBR 0xfe000c00 - - __INIT - .balign 4 - -############################################################################### -# -# describe the position and layout of the SDRAM controller registers -# -# ENTRY: EXIT: -# GR5 - cacheline size -# GR11 - displacement of 2nd SDRAM addr reg from GR14 -# GR12 - displacement of 3rd SDRAM addr reg from GR14 -# GR13 - displacement of 4th SDRAM addr reg from GR14 -# GR14 - address of 1st SDRAM addr reg -# GR15 - amount to shift address by to match SDRAM addr reg -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# CC0 - T if DBR0 is present -# CC1 - T if DBR1 is present -# CC2 - T if DBR2 is present (not FR401/FR401A) -# CC3 - T if DBR3 is present (not FR401/FR401A) -# -############################################################################### - .globl __head_fr401_describe_sdram -__head_fr401_describe_sdram: - sethi.p %hi(__400_DBR0),gr14 - setlo %lo(__400_DBR0),gr14 - setlos.p #__400_DBR1-__400_DBR0,gr11 - setlos #__400_DBR2-__400_DBR0,gr12 - setlos.p #__400_DBR3-__400_DBR0,gr13 - setlos #32,gr5 ; cacheline size - setlos.p #0,gr15 ; amount to shift addr reg by - - # specify which DBR regs are present - setlos #0x00ff,gr4 - movgs gr4,cccr - movsg psr,gr3 ; check for FR401/FR401A - srli gr3,#25,gr3 - subicc gr3,#0x20>>1,gr0,icc0 - bnelr icc0,#1 - setlos #0x000f,gr4 - movgs gr4,cccr - bralr - -############################################################################### -# -# rearrange the bus controller registers -# -# ENTRY: EXIT: -# GR26 &__head_reference [saved] -# GR30 LED address revised LED address -# -############################################################################### - .globl __head_fr401_set_busctl -__head_fr401_set_busctl: - sethi.p %hi(__400_LGCR),gr4 - setlo %lo(__400_LGCR),gr4 - sethi.p %hi(__400_LSBR),gr10 - setlo %lo(__400_LSBR),gr10 - sethi.p %hi(__400_LCR),gr11 - setlo %lo(__400_LCR),gr11 - - # set the bus controller - ldi @(gr4,#0),gr5 - ori gr5,#0xff,gr5 ; make sure all chip-selects are enabled - sti gr5,@(gr4,#0) - - sethi.p %hi(__region_CS1),gr4 - setlo %lo(__region_CS1),gr4 - sethi.p %hi(__region_CS1_M),gr5 - setlo %lo(__region_CS1_M),gr5 - sethi.p %hi(__region_CS1_C),gr6 - setlo %lo(__region_CS1_C),gr6 - sti gr4,@(gr10,#1*0x08) - sti gr5,@(gr10,#1*0x08+0x100) - sti gr6,@(gr11,#1*0x08) - sethi.p %hi(__region_CS2),gr4 - setlo %lo(__region_CS2),gr4 - sethi.p %hi(__region_CS2_M),gr5 - setlo %lo(__region_CS2_M),gr5 - sethi.p %hi(__region_CS2_C),gr6 - setlo %lo(__region_CS2_C),gr6 - sti gr4,@(gr10,#2*0x08) - sti gr5,@(gr10,#2*0x08+0x100) - sti gr6,@(gr11,#2*0x08) - sethi.p %hi(__region_CS3),gr4 - setlo %lo(__region_CS3),gr4 - sethi.p %hi(__region_CS3_M),gr5 - setlo %lo(__region_CS3_M),gr5 - sethi.p %hi(__region_CS3_C),gr6 - setlo %lo(__region_CS3_C),gr6 - sti gr4,@(gr10,#3*0x08) - sti gr5,@(gr10,#3*0x08+0x100) - sti gr6,@(gr11,#3*0x08) - sethi.p %hi(__region_CS4),gr4 - setlo %lo(__region_CS4),gr4 - sethi.p %hi(__region_CS4_M),gr5 - setlo %lo(__region_CS4_M),gr5 - sethi.p %hi(__region_CS4_C),gr6 - setlo %lo(__region_CS4_C),gr6 - sti gr4,@(gr10,#4*0x08) - sti gr5,@(gr10,#4*0x08+0x100) - sti gr6,@(gr11,#4*0x08) - sethi.p %hi(__region_CS5),gr4 - setlo %lo(__region_CS5),gr4 - sethi.p %hi(__region_CS5_M),gr5 - setlo %lo(__region_CS5_M),gr5 - sethi.p %hi(__region_CS5_C),gr6 - setlo %lo(__region_CS5_C),gr6 - sti gr4,@(gr10,#5*0x08) - sti gr5,@(gr10,#5*0x08+0x100) - sti gr6,@(gr11,#5*0x08) - sethi.p %hi(__region_CS6),gr4 - setlo %lo(__region_CS6),gr4 - sethi.p %hi(__region_CS6_M),gr5 - setlo %lo(__region_CS6_M),gr5 - sethi.p %hi(__region_CS6_C),gr6 - setlo %lo(__region_CS6_C),gr6 - sti gr4,@(gr10,#6*0x08) - sti gr5,@(gr10,#6*0x08+0x100) - sti gr6,@(gr11,#6*0x08) - sethi.p %hi(__region_CS7),gr4 - setlo %lo(__region_CS7),gr4 - sethi.p %hi(__region_CS7_M),gr5 - setlo %lo(__region_CS7_M),gr5 - sethi.p %hi(__region_CS7_C),gr6 - setlo %lo(__region_CS7_C),gr6 - sti gr4,@(gr10,#7*0x08) - sti gr5,@(gr10,#7*0x08+0x100) - sti gr6,@(gr11,#7*0x08) - membar - bar - - # adjust LED bank address - sethi.p %hi(LED_ADDR - 0x20000000 +__region_CS2),gr30 - setlo %lo(LED_ADDR - 0x20000000 +__region_CS2),gr30 - bralr - -############################################################################### -# -# determine the total SDRAM size -# -# ENTRY: EXIT: -# GR25 - SDRAM size -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# -############################################################################### - .globl __head_fr401_survey_sdram -__head_fr401_survey_sdram: - sethi.p %hi(__400_DAM0),gr11 - setlo %lo(__400_DAM0),gr11 - sethi.p %hi(__400_DBR0),gr12 - setlo %lo(__400_DBR0),gr12 - - sethi.p %hi(0xfe000000),gr17 ; unused SDRAM DBR value - setlo %lo(0xfe000000),gr17 - setlos #0,gr25 - - ldi @(gr12,#0x00),gr4 ; DAR0 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS0 - ldi @(gr11,#0x00),gr6 ; DAM0: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS0: - - ldi @(gr12,#0x08),gr4 ; DAR1 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS1 - ldi @(gr11,#0x08),gr6 ; DAM1: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS1: - - # FR401/FR401A does not have DCS2/3 - movsg psr,gr3 - srli gr3,#25,gr3 - subicc gr3,#0x20>>1,gr0,icc0 - beq icc0,#0,__head_no_DCS3 - - ldi @(gr12,#0x10),gr4 ; DAR2 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS2 - ldi @(gr11,#0x10),gr6 ; DAM2: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS2: - - ldi @(gr12,#0x18),gr4 ; DAR3 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS3 - ldi @(gr11,#0x18),gr6 ; DAM3: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS3: - bralr - -############################################################################### -# -# set the protection map with the I/DAMPR registers -# -# ENTRY: EXIT: -# GR25 SDRAM size [saved] -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# -############################################################################### - .globl __head_fr401_set_protection -__head_fr401_set_protection: - movsg lr,gr27 - - # set the I/O region protection registers for FR401/3/5 - sethi.p %hi(__region_IO),gr5 - setlo %lo(__region_IO),gr5 - ori gr5,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5 - movgs gr0,iampr7 - movgs gr5,dampr7 ; General I/O tile - - # need to tile the remaining IAMPR/DAMPR registers to cover as much of the RAM as possible - # - start with the highest numbered registers - sethi.p %hi(__kernel_image_end),gr8 - setlo %lo(__kernel_image_end),gr8 - sethi.p %hi(32768),gr4 ; allow for a maximal allocator bitmap - setlo %lo(32768),gr4 - add gr8,gr4,gr8 - sethi.p %hi(1024*2048-1),gr4 ; round up to nearest 2MiB - setlo %lo(1024*2048-1),gr4 - add.p gr8,gr4,gr8 - not gr4,gr4 - and gr8,gr4,gr8 - - sethi.p %hi(__page_offset),gr9 - setlo %lo(__page_offset),gr9 - add gr9,gr25,gr9 - - # GR8 = base of uncovered RAM - # GR9 = top of uncovered RAM - -#ifdef CONFIG_MB93093_PDK - sethi.p %hi(__region_CS2),gr4 - setlo %lo(__region_CS2),gr4 - ori gr4,#xAMPRx_SS_1Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr4 - movgs gr4,dampr6 - movgs gr0,iampr6 -#else - call __head_split_region - movgs gr4,iampr6 - movgs gr5,dampr6 -#endif - call __head_split_region - movgs gr4,iampr5 - movgs gr5,dampr5 - call __head_split_region - movgs gr4,iampr4 - movgs gr5,dampr4 - call __head_split_region - movgs gr4,iampr3 - movgs gr5,dampr3 - call __head_split_region - movgs gr4,iampr2 - movgs gr5,dampr2 - call __head_split_region - movgs gr4,iampr1 - movgs gr5,dampr1 - - # cover kernel core image with kernel-only segment - sethi.p %hi(__page_offset),gr8 - setlo %lo(__page_offset),gr8 - call __head_split_region - -#ifdef CONFIG_PROTECT_KERNEL - ori.p gr4,#xAMPRx_S_KERNEL,gr4 - ori gr5,#xAMPRx_S_KERNEL,gr5 -#endif - - movgs gr4,iampr0 - movgs gr5,dampr0 - jmpl @(gr27,gr0) diff --git a/arch/frv/kernel/head-uc-fr451.S b/arch/frv/kernel/head-uc-fr451.S deleted file mode 100644 index b2a76c4a1786..000000000000 --- a/arch/frv/kernel/head-uc-fr451.S +++ /dev/null @@ -1,174 +0,0 @@ -/* head-uc-fr451.S: FR451 uc-linux specific bits of initialisation - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/init.h> -#include <linux/threads.h> -#include <linux/linkage.h> -#include <asm/ptrace.h> -#include <asm/page.h> -#include <asm/spr-regs.h> -#include <asm/mb86943a.h> -#include "head.inc" - - -#define __400_DBR0 0xfe000e00 -#define __400_DBR1 0xfe000e08 -#define __400_DBR2 0xfe000e10 -#define __400_DBR3 0xfe000e18 -#define __400_DAM0 0xfe000f00 -#define __400_DAM1 0xfe000f08 -#define __400_DAM2 0xfe000f10 -#define __400_DAM3 0xfe000f18 -#define __400_LGCR 0xfe000010 -#define __400_LCR 0xfe000100 -#define __400_LSBR 0xfe000c00 - - __INIT - .balign 4 - -############################################################################### -# -# set the protection map with the I/DAMPR registers -# -# ENTRY: EXIT: -# GR25 SDRAM size [saved] -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# -############################################################################### - .globl __head_fr451_set_protection -__head_fr451_set_protection: - movsg lr,gr27 - - movgs gr0,dampr10 - movgs gr0,damlr10 - movgs gr0,dampr9 - movgs gr0,damlr9 - movgs gr0,dampr8 - movgs gr0,damlr8 - - # set the I/O region protection registers for FR401/3/5 - sethi.p %hi(__region_IO),gr5 - setlo %lo(__region_IO),gr5 - sethi.p %hi(0x1fffffff),gr7 - setlo %lo(0x1fffffff),gr7 - ori gr5,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5 - movgs gr5,dampr11 ; General I/O tile - movgs gr7,damlr11 - - # need to tile the remaining IAMPR/DAMPR registers to cover as much of the RAM as possible - # - start with the highest numbered registers - sethi.p %hi(__kernel_image_end),gr8 - setlo %lo(__kernel_image_end),gr8 - sethi.p %hi(32768),gr4 ; allow for a maximal allocator bitmap - setlo %lo(32768),gr4 - add gr8,gr4,gr8 - sethi.p %hi(1024*2048-1),gr4 ; round up to nearest 2MiB - setlo %lo(1024*2048-1),gr4 - add.p gr8,gr4,gr8 - not gr4,gr4 - and gr8,gr4,gr8 - - sethi.p %hi(__page_offset),gr9 - setlo %lo(__page_offset),gr9 - add gr9,gr25,gr9 - - sethi.p %hi(0xffffc000),gr11 - setlo %lo(0xffffc000),gr11 - - # GR8 = base of uncovered RAM - # GR9 = top of uncovered RAM - # GR11 = xAMLR mask - LEDS 0x3317 - call __head_split_region - movgs gr4,iampr7 - movgs gr6,iamlr7 - movgs gr5,dampr7 - movgs gr7,damlr7 - - LEDS 0x3316 - call __head_split_region - movgs gr4,iampr6 - movgs gr6,iamlr6 - movgs gr5,dampr6 - movgs gr7,damlr6 - - LEDS 0x3315 - call __head_split_region - movgs gr4,iampr5 - movgs gr6,iamlr5 - movgs gr5,dampr5 - movgs gr7,damlr5 - - LEDS 0x3314 - call __head_split_region - movgs gr4,iampr4 - movgs gr6,iamlr4 - movgs gr5,dampr4 - movgs gr7,damlr4 - - LEDS 0x3313 - call __head_split_region - movgs gr4,iampr3 - movgs gr6,iamlr3 - movgs gr5,dampr3 - movgs gr7,damlr3 - - LEDS 0x3312 - call __head_split_region - movgs gr4,iampr2 - movgs gr6,iamlr2 - movgs gr5,dampr2 - movgs gr7,damlr2 - - LEDS 0x3311 - call __head_split_region - movgs gr4,iampr1 - movgs gr6,iamlr1 - movgs gr5,dampr1 - movgs gr7,damlr1 - - # cover kernel core image with kernel-only segment - LEDS 0x3310 - sethi.p %hi(__page_offset),gr8 - setlo %lo(__page_offset),gr8 - call __head_split_region - -#ifdef CONFIG_PROTECT_KERNEL - ori.p gr4,#xAMPRx_S_KERNEL,gr4 - ori gr5,#xAMPRx_S_KERNEL,gr5 -#endif - - movgs gr4,iampr0 - movgs gr6,iamlr0 - movgs gr5,dampr0 - movgs gr7,damlr0 - - # start in TLB context 0 with no page tables - movgs gr0,cxnr - movgs gr0,ttbr - - # the FR451 also has an extra trap base register - movsg tbr,gr4 - movgs gr4,btbr - - # turn on the timers as appropriate - movgs gr0,timerh - movgs gr0,timerl - movgs gr0,timerd - movsg hsr0,gr4 - sethi.p %hi(HSR0_ETMI),gr5 - setlo %lo(HSR0_ETMI),gr5 - or gr4,gr5,gr4 - movgs gr4,hsr0 - - LEDS 0x3300 - jmpl @(gr27,gr0) diff --git a/arch/frv/kernel/head-uc-fr555.S b/arch/frv/kernel/head-uc-fr555.S deleted file mode 100644 index 5497aaf34f77..000000000000 --- a/arch/frv/kernel/head-uc-fr555.S +++ /dev/null @@ -1,347 +0,0 @@ -/* head-uc-fr555.S: FR555 uc-linux specific bits of initialisation - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/init.h> -#include <linux/threads.h> -#include <linux/linkage.h> -#include <asm/ptrace.h> -#include <asm/page.h> -#include <asm/spr-regs.h> -#include <asm/mb86943a.h> -#include "head.inc" - - -#define __551_DARS0 0xfeff0100 -#define __551_DARS1 0xfeff0104 -#define __551_DARS2 0xfeff0108 -#define __551_DARS3 0xfeff010c -#define __551_DAMK0 0xfeff0110 -#define __551_DAMK1 0xfeff0114 -#define __551_DAMK2 0xfeff0118 -#define __551_DAMK3 0xfeff011c -#define __551_LCR 0xfeff1100 -#define __551_LSBR 0xfeff1c00 - - __INIT - .balign 4 - -############################################################################### -# -# describe the position and layout of the SDRAM controller registers -# -# ENTRY: EXIT: -# GR5 - cacheline size -# GR11 - displacement of 2nd SDRAM addr reg from GR14 -# GR12 - displacement of 3rd SDRAM addr reg from GR14 -# GR13 - displacement of 4th SDRAM addr reg from GR14 -# GR14 - address of 1st SDRAM addr reg -# GR15 - amount to shift address by to match SDRAM addr reg -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# CC0 - T if DARS0 is present -# CC1 - T if DARS1 is present -# CC2 - T if DARS2 is present -# CC3 - T if DARS3 is present -# -############################################################################### - .globl __head_fr555_describe_sdram -__head_fr555_describe_sdram: - sethi.p %hi(__551_DARS0),gr14 - setlo %lo(__551_DARS0),gr14 - setlos.p #__551_DARS1-__551_DARS0,gr11 - setlos #__551_DARS2-__551_DARS0,gr12 - setlos.p #__551_DARS3-__551_DARS0,gr13 - setlos #64,gr5 ; cacheline size - setlos #20,gr15 ; amount to shift addr by - setlos #0x00ff,gr4 - movgs gr4,cccr ; extant DARS/DAMK regs - bralr - -############################################################################### -# -# rearrange the bus controller registers -# -# ENTRY: EXIT: -# GR26 &__head_reference [saved] -# GR30 LED address revised LED address -# -############################################################################### - .globl __head_fr555_set_busctl -__head_fr555_set_busctl: - LEDS 0x100f - sethi.p %hi(__551_LSBR),gr10 - setlo %lo(__551_LSBR),gr10 - sethi.p %hi(__551_LCR),gr11 - setlo %lo(__551_LCR),gr11 - - # set the bus controller - sethi.p %hi(__region_CS1),gr4 - setlo %lo(__region_CS1),gr4 - sethi.p %hi(__region_CS1_M),gr5 - setlo %lo(__region_CS1_M),gr5 - sethi.p %hi(__region_CS1_C),gr6 - setlo %lo(__region_CS1_C),gr6 - sti gr4,@(gr10,#1*0x08) - sti gr5,@(gr10,#1*0x08+0x100) - sti gr6,@(gr11,#1*0x08) - sethi.p %hi(__region_CS2),gr4 - setlo %lo(__region_CS2),gr4 - sethi.p %hi(__region_CS2_M),gr5 - setlo %lo(__region_CS2_M),gr5 - sethi.p %hi(__region_CS2_C),gr6 - setlo %lo(__region_CS2_C),gr6 - sti gr4,@(gr10,#2*0x08) - sti gr5,@(gr10,#2*0x08+0x100) - sti gr6,@(gr11,#2*0x08) - sethi.p %hi(__region_CS3),gr4 - setlo %lo(__region_CS3),gr4 - sethi.p %hi(__region_CS3_M),gr5 - setlo %lo(__region_CS3_M),gr5 - sethi.p %hi(__region_CS3_C),gr6 - setlo %lo(__region_CS3_C),gr6 - sti gr4,@(gr10,#3*0x08) - sti gr5,@(gr10,#3*0x08+0x100) - sti gr6,@(gr11,#3*0x08) - sethi.p %hi(__region_CS4),gr4 - setlo %lo(__region_CS4),gr4 - sethi.p %hi(__region_CS4_M),gr5 - setlo %lo(__region_CS4_M),gr5 - sethi.p %hi(__region_CS4_C),gr6 - setlo %lo(__region_CS4_C),gr6 - sti gr4,@(gr10,#4*0x08) - sti gr5,@(gr10,#4*0x08+0x100) - sti gr6,@(gr11,#4*0x08) - sethi.p %hi(__region_CS5),gr4 - setlo %lo(__region_CS5),gr4 - sethi.p %hi(__region_CS5_M),gr5 - setlo %lo(__region_CS5_M),gr5 - sethi.p %hi(__region_CS5_C),gr6 - setlo %lo(__region_CS5_C),gr6 - sti gr4,@(gr10,#5*0x08) - sti gr5,@(gr10,#5*0x08+0x100) - sti gr6,@(gr11,#5*0x08) - sethi.p %hi(__region_CS6),gr4 - setlo %lo(__region_CS6),gr4 - sethi.p %hi(__region_CS6_M),gr5 - setlo %lo(__region_CS6_M),gr5 - sethi.p %hi(__region_CS6_C),gr6 - setlo %lo(__region_CS6_C),gr6 - sti gr4,@(gr10,#6*0x08) - sti gr5,@(gr10,#6*0x08+0x100) - sti gr6,@(gr11,#6*0x08) - sethi.p %hi(__region_CS7),gr4 - setlo %lo(__region_CS7),gr4 - sethi.p %hi(__region_CS7_M),gr5 - setlo %lo(__region_CS7_M),gr5 - sethi.p %hi(__region_CS7_C),gr6 - setlo %lo(__region_CS7_C),gr6 - sti gr4,@(gr10,#7*0x08) - sti gr5,@(gr10,#7*0x08+0x100) - sti gr6,@(gr11,#7*0x08) - membar - bar - - # adjust LED bank address -#ifdef CONFIG_MB93091_VDK - sethi.p %hi(LED_ADDR - 0x20000000 +__region_CS2),gr30 - setlo %lo(LED_ADDR - 0x20000000 +__region_CS2),gr30 -#endif - bralr - -############################################################################### -# -# determine the total SDRAM size -# -# ENTRY: EXIT: -# GR25 - SDRAM size -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# -############################################################################### - .globl __head_fr555_survey_sdram -__head_fr555_survey_sdram: - sethi.p %hi(__551_DAMK0),gr11 - setlo %lo(__551_DAMK0),gr11 - sethi.p %hi(__551_DARS0),gr12 - setlo %lo(__551_DARS0),gr12 - - sethi.p %hi(0xfff),gr17 ; unused SDRAM AMK value - setlo %lo(0xfff),gr17 - setlos #0,gr25 - - ldi @(gr11,#0x00),gr6 ; DAMK0: bits 11:0 match addr 11:0 - subcc gr6,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS0 - ldi @(gr12,#0x00),gr4 ; DARS0 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS0: - - ldi @(gr11,#0x04),gr6 ; DAMK1: bits 11:0 match addr 11:0 - subcc gr6,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS1 - ldi @(gr12,#0x04),gr4 ; DARS1 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS1: - - ldi @(gr11,#0x8),gr6 ; DAMK2: bits 11:0 match addr 11:0 - subcc gr6,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS2 - ldi @(gr12,#0x8),gr4 ; DARS2 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS2: - - ldi @(gr11,#0xc),gr6 ; DAMK3: bits 11:0 match addr 11:0 - subcc gr6,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS3 - ldi @(gr12,#0xc),gr4 ; DARS3 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS3: - - slli gr25,#20,gr25 ; shift [11:0] -> [31:20] - bralr - -############################################################################### -# -# set the protection map with the I/DAMPR registers -# -# ENTRY: EXIT: -# GR25 SDRAM size saved -# GR30 LED address saved -# -############################################################################### - .globl __head_fr555_set_protection -__head_fr555_set_protection: - movsg lr,gr27 - - sethi.p %hi(0xfff00000),gr11 - setlo %lo(0xfff00000),gr11 - - # set the I/O region protection registers for FR555 - sethi.p %hi(__region_IO),gr7 - setlo %lo(__region_IO),gr7 - ori gr7,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5 - movgs gr0,iampr15 - movgs gr0,iamlr15 - movgs gr5,dampr15 - movgs gr7,damlr15 - - # need to tile the remaining IAMPR/DAMPR registers to cover as much of the RAM as possible - # - start with the highest numbered registers - sethi.p %hi(__kernel_image_end),gr8 - setlo %lo(__kernel_image_end),gr8 - sethi.p %hi(32768),gr4 ; allow for a maximal allocator bitmap - setlo %lo(32768),gr4 - add gr8,gr4,gr8 - sethi.p %hi(1024*2048-1),gr4 ; round up to nearest 2MiB - setlo %lo(1024*2048-1),gr4 - add.p gr8,gr4,gr8 - not gr4,gr4 - and gr8,gr4,gr8 - - sethi.p %hi(__page_offset),gr9 - setlo %lo(__page_offset),gr9 - add gr9,gr25,gr9 - - # GR8 = base of uncovered RAM - # GR9 = top of uncovered RAM - # GR11 - mask for DAMLR/IAMLR regs - # - call __head_split_region - movgs gr4,iampr14 - movgs gr6,iamlr14 - movgs gr5,dampr14 - movgs gr7,damlr14 - call __head_split_region - movgs gr4,iampr13 - movgs gr6,iamlr13 - movgs gr5,dampr13 - movgs gr7,damlr13 - call __head_split_region - movgs gr4,iampr12 - movgs gr6,iamlr12 - movgs gr5,dampr12 - movgs gr7,damlr12 - call __head_split_region - movgs gr4,iampr11 - movgs gr6,iamlr11 - movgs gr5,dampr11 - movgs gr7,damlr11 - call __head_split_region - movgs gr4,iampr10 - movgs gr6,iamlr10 - movgs gr5,dampr10 - movgs gr7,damlr10 - call __head_split_region - movgs gr4,iampr9 - movgs gr6,iamlr9 - movgs gr5,dampr9 - movgs gr7,damlr9 - call __head_split_region - movgs gr4,iampr8 - movgs gr6,iamlr8 - movgs gr5,dampr8 - movgs gr7,damlr8 - - call __head_split_region - movgs gr4,iampr7 - movgs gr6,iamlr7 - movgs gr5,dampr7 - movgs gr7,damlr7 - call __head_split_region - movgs gr4,iampr6 - movgs gr6,iamlr6 - movgs gr5,dampr6 - movgs gr7,damlr6 - call __head_split_region - movgs gr4,iampr5 - movgs gr6,iamlr5 - movgs gr5,dampr5 - movgs gr7,damlr5 - call __head_split_region - movgs gr4,iampr4 - movgs gr6,iamlr4 - movgs gr5,dampr4 - movgs gr7,damlr4 - call __head_split_region - movgs gr4,iampr3 - movgs gr6,iamlr3 - movgs gr5,dampr3 - movgs gr7,damlr3 - call __head_split_region - movgs gr4,iampr2 - movgs gr6,iamlr2 - movgs gr5,dampr2 - movgs gr7,damlr2 - call __head_split_region - movgs gr4,iampr1 - movgs gr6,iamlr1 - movgs gr5,dampr1 - movgs gr7,damlr1 - - # cover kernel core image with kernel-only segment - sethi.p %hi(__page_offset),gr8 - setlo %lo(__page_offset),gr8 - call __head_split_region - -#ifdef CONFIG_PROTECT_KERNEL - ori.p gr4,#xAMPRx_S_KERNEL,gr4 - ori gr5,#xAMPRx_S_KERNEL,gr5 -#endif - - movgs gr4,iampr0 - movgs gr6,iamlr0 - movgs gr5,dampr0 - movgs gr7,damlr0 - jmpl @(gr27,gr0) diff --git a/arch/frv/kernel/head.S b/arch/frv/kernel/head.S deleted file mode 100644 index a7d0bea9c036..000000000000 --- a/arch/frv/kernel/head.S +++ /dev/null @@ -1,638 +0,0 @@ -/* head.S: kernel entry point for FR-V kernel - * - * Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/init.h> -#include <linux/threads.h> -#include <linux/linkage.h> -#include <asm/thread_info.h> -#include <asm/ptrace.h> -#include <asm/page.h> -#include <asm/spr-regs.h> -#include <asm/mb86943a.h> -#include <asm/cache.h> -#include "head.inc" - -############################################################################### -# -# void _boot(unsigned long magic, char *command_line) __attribute__((noreturn)) -# -# - if magic is 0xdead1eaf, then command_line is assumed to point to the kernel -# command line string -# -############################################################################### - __HEAD - .balign 4 - - .globl _boot, __head_reference - .type _boot,@function -_boot: -__head_reference: - sethi.p %hi(LED_ADDR),gr30 - setlo %lo(LED_ADDR),gr30 - - LEDS 0x0000 - - # calculate reference address for PC-relative stuff - call 0f -0: movsg lr,gr26 - addi gr26,#__head_reference-0b,gr26 - - # invalidate and disable both of the caches and turn off the memory access checking - dcef @(gr0,gr0),1 - bar - - sethi.p %hi(~(HSR0_ICE|HSR0_DCE|HSR0_CBM|HSR0_EIMMU|HSR0_EDMMU)),gr4 - setlo %lo(~(HSR0_ICE|HSR0_DCE|HSR0_CBM|HSR0_EIMMU|HSR0_EDMMU)),gr4 - movsg hsr0,gr5 - and gr4,gr5,gr5 - movgs gr5,hsr0 - movsg hsr0,gr5 - - LEDS 0x0001 - - icei @(gr0,gr0),1 - dcei @(gr0,gr0),1 - bar - - # turn the instruction cache back on - sethi.p %hi(HSR0_ICE),gr4 - setlo %lo(HSR0_ICE),gr4 - movsg hsr0,gr5 - or gr4,gr5,gr5 - movgs gr5,hsr0 - movsg hsr0,gr5 - - bar - - LEDS 0x0002 - - # retrieve the parameters (including command line) before we overwrite them - sethi.p %hi(0xdead1eaf),gr7 - setlo %lo(0xdead1eaf),gr7 - subcc gr7,gr8,gr0,icc0 - bne icc0,#0,__head_no_parameters - - sethi.p %hi(redboot_command_line-1),gr6 - setlo %lo(redboot_command_line-1),gr6 - sethi.p %hi(__head_reference),gr4 - setlo %lo(__head_reference),gr4 - sub gr6,gr4,gr6 - add.p gr6,gr26,gr6 - subi gr9,#1,gr9 - setlos.p #511,gr4 - setlos #1,gr5 - -__head_copy_cmdline: - ldubu.p @(gr9,gr5),gr16 - subicc gr4,#1,gr4,icc0 - stbu.p gr16,@(gr6,gr5) - subicc gr16,#0,gr0,icc1 - bls icc0,#0,__head_end_cmdline - bne icc1,#1,__head_copy_cmdline -__head_end_cmdline: - stbu gr0,@(gr6,gr5) -__head_no_parameters: - -############################################################################### -# -# we need to relocate the SDRAM to 0x00000000 (linux) or 0xC0000000 (uClinux) -# - note that we're going to have to run entirely out of the icache whilst -# fiddling with the SDRAM controller registers -# -############################################################################### -#ifdef CONFIG_MMU - call __head_fr451_describe_sdram - -#else - movsg psr,gr5 - srli gr5,#28,gr5 - subicc gr5,#3,gr0,icc0 - beq icc0,#0,__head_fr551_sdram - - call __head_fr401_describe_sdram - bra __head_do_sdram - -__head_fr551_sdram: - call __head_fr555_describe_sdram - LEDS 0x000d - -__head_do_sdram: -#endif - - # preload the registers with invalid values in case any DBR/DARS are marked not present - sethi.p %hi(0xfe000000),gr17 ; unused SDRAM DBR value - setlo %lo(0xfe000000),gr17 - or.p gr17,gr0,gr20 - or gr17,gr0,gr21 - or.p gr17,gr0,gr22 - or gr17,gr0,gr23 - - # consult the SDRAM controller CS address registers - cld @(gr14,gr0 ),gr20, cc0,#1 ; DBR0 / DARS0 - cld @(gr14,gr11),gr21, cc1,#1 ; DBR1 / DARS1 - cld @(gr14,gr12),gr22, cc2,#1 ; DBR2 / DARS2 - cld.p @(gr14,gr13),gr23, cc3,#1 ; DBR3 / DARS3 - - sll gr20,gr15,gr20 ; shift values up for FR551 - sll gr21,gr15,gr21 - sll gr22,gr15,gr22 - sll gr23,gr15,gr23 - - LEDS 0x0003 - - # assume the lowest valid CS line to be the SDRAM base and get its address - subcc gr20,gr17,gr0,icc0 - subcc.p gr21,gr17,gr0,icc1 - subcc gr22,gr17,gr0,icc2 - subcc.p gr23,gr17,gr0,icc3 - ckne icc0,cc4 ; T if DBR0 != 0xfe000000 - ckne icc1,cc5 - ckne icc2,cc6 - ckne icc3,cc7 - cor gr23,gr0,gr24, cc7,#1 ; GR24 = SDRAM base - cor gr22,gr0,gr24, cc6,#1 - cor gr21,gr0,gr24, cc5,#1 - cor gr20,gr0,gr24, cc4,#1 - - # calculate the displacement required to get the SDRAM into the right place in memory - sethi.p %hi(__sdram_base),gr16 - setlo %lo(__sdram_base),gr16 - sub gr16,gr24,gr16 ; delta = __sdram_base - DBRx - - # calculate the new values to go in the controller regs - cadd.p gr20,gr16,gr20, cc4,#1 ; DCS#0 (new) = DCS#0 (old) + delta - cadd gr21,gr16,gr21, cc5,#1 - cadd.p gr22,gr16,gr22, cc6,#1 - cadd gr23,gr16,gr23, cc7,#1 - - srl gr20,gr15,gr20 ; shift values down for FR551 - srl gr21,gr15,gr21 - srl gr22,gr15,gr22 - srl gr23,gr15,gr23 - - # work out the address at which the reg updater resides and lock it into icache - # also work out the address the updater will jump to when finished - sethi.p %hi(__head_move_sdram-__head_reference),gr18 - setlo %lo(__head_move_sdram-__head_reference),gr18 - sethi.p %hi(__head_sdram_moved-__head_reference),gr19 - setlo %lo(__head_sdram_moved-__head_reference),gr19 - add.p gr18,gr26,gr18 - add gr19,gr26,gr19 - add.p gr19,gr16,gr19 ; moved = addr + (__sdram_base - DBRx) - add gr18,gr5,gr4 ; two cachelines probably required - - icpl gr18,gr0,#1 ; load and lock the cachelines - icpl gr4,gr0,#1 - LEDS 0x0004 - membar - bar - jmpl @(gr18,gr0) - - .balign L1_CACHE_BYTES -__head_move_sdram: - cst gr20,@(gr14,gr0 ), cc4,#1 - cst gr21,@(gr14,gr11), cc5,#1 - cst gr22,@(gr14,gr12), cc6,#1 - cst gr23,@(gr14,gr13), cc7,#1 - cld @(gr14,gr0 ),gr20, cc4,#1 - cld @(gr14,gr11),gr21, cc5,#1 - cld @(gr14,gr12),gr22, cc4,#1 - cld @(gr14,gr13),gr23, cc7,#1 - bar - membar - jmpl @(gr19,gr0) - - .balign L1_CACHE_BYTES -__head_sdram_moved: - icul gr18 - add gr18,gr5,gr4 - icul gr4 - icei @(gr0,gr0),1 - dcei @(gr0,gr0),1 - - LEDS 0x0005 - - # recalculate reference address - call 0f -0: movsg lr,gr26 - addi gr26,#__head_reference-0b,gr26 - - -############################################################################### -# -# move the kernel image down to the bottom of the SDRAM -# -############################################################################### - sethi.p %hi(__kernel_image_size_no_bss+15),gr4 - setlo %lo(__kernel_image_size_no_bss+15),gr4 - srli.p gr4,#4,gr4 ; count - or gr26,gr26,gr16 ; source - - sethi.p %hi(__sdram_base),gr17 ; destination - setlo %lo(__sdram_base),gr17 - - setlos #8,gr5 - sub.p gr16,gr5,gr16 ; adjust src for LDDU - sub gr17,gr5,gr17 ; adjust dst for LDDU - - sethi.p %hi(__head_move_kernel-__head_reference),gr18 - setlo %lo(__head_move_kernel-__head_reference),gr18 - sethi.p %hi(__head_kernel_moved-__head_reference+__sdram_base),gr19 - setlo %lo(__head_kernel_moved-__head_reference+__sdram_base),gr19 - add gr18,gr26,gr18 - icpl gr18,gr0,#1 - jmpl @(gr18,gr0) - - .balign 32 -__head_move_kernel: - lddu @(gr16,gr5),gr10 - lddu @(gr16,gr5),gr12 - stdu.p gr10,@(gr17,gr5) - subicc gr4,#1,gr4,icc0 - stdu.p gr12,@(gr17,gr5) - bhi icc0,#0,__head_move_kernel - jmpl @(gr19,gr0) - - .balign 32 -__head_kernel_moved: - icul gr18 - icei @(gr0,gr0),1 - dcei @(gr0,gr0),1 - - LEDS 0x0006 - - # recalculate reference address - call 0f -0: movsg lr,gr26 - addi gr26,#__head_reference-0b,gr26 - - -############################################################################### -# -# rearrange the iomem map and set the protection registers -# -############################################################################### - -#ifdef CONFIG_MMU - LEDS 0x3301 - call __head_fr451_set_busctl - LEDS 0x3303 - call __head_fr451_survey_sdram - LEDS 0x3305 - call __head_fr451_set_protection - -#else - movsg psr,gr5 - srli gr5,#PSR_IMPLE_SHIFT,gr5 - subicc gr5,#PSR_IMPLE_FR551,gr0,icc0 - beq icc0,#0,__head_fr555_memmap - subicc gr5,#PSR_IMPLE_FR451,gr0,icc0 - beq icc0,#0,__head_fr451_memmap - - LEDS 0x3101 - call __head_fr401_set_busctl - LEDS 0x3103 - call __head_fr401_survey_sdram - LEDS 0x3105 - call __head_fr401_set_protection - bra __head_done_memmap - -__head_fr451_memmap: - LEDS 0x3301 - call __head_fr401_set_busctl - LEDS 0x3303 - call __head_fr401_survey_sdram - LEDS 0x3305 - call __head_fr451_set_protection - bra __head_done_memmap - -__head_fr555_memmap: - LEDS 0x3501 - call __head_fr555_set_busctl - LEDS 0x3503 - call __head_fr555_survey_sdram - LEDS 0x3505 - call __head_fr555_set_protection - -__head_done_memmap: -#endif - LEDS 0x0007 - -############################################################################### -# -# turn the data cache and MMU on -# - for the FR451 this'll mean that the window through which the kernel is -# viewed will change -# -############################################################################### - -#ifdef CONFIG_MMU -#define MMUMODE HSR0_EIMMU|HSR0_EDMMU|HSR0_EXMMU|HSR0_EDAT|HSR0_XEDAT -#else -#define MMUMODE HSR0_EIMMU|HSR0_EDMMU -#endif - - movsg hsr0,gr5 - - sethi.p %hi(MMUMODE),gr4 - setlo %lo(MMUMODE),gr4 - or gr4,gr5,gr5 - -#if defined(CONFIG_FRV_DEFL_CACHE_WTHRU) - sethi.p %hi(HSR0_DCE|HSR0_CBM_WRITE_THRU),gr4 - setlo %lo(HSR0_DCE|HSR0_CBM_WRITE_THRU),gr4 -#elif defined(CONFIG_FRV_DEFL_CACHE_WBACK) - sethi.p %hi(HSR0_DCE|HSR0_CBM_COPY_BACK),gr4 - setlo %lo(HSR0_DCE|HSR0_CBM_COPY_BACK),gr4 -#elif defined(CONFIG_FRV_DEFL_CACHE_WBEHIND) - sethi.p %hi(HSR0_DCE|HSR0_CBM_COPY_BACK),gr4 - setlo %lo(HSR0_DCE|HSR0_CBM_COPY_BACK),gr4 - - movsg psr,gr6 - srli gr6,#24,gr6 - cmpi gr6,#0x50,icc0 // FR451 - beq icc0,#0,0f - cmpi gr6,#0x40,icc0 // FR405 - bne icc0,#0,1f -0: - # turn off write-allocate - sethi.p %hi(HSR0_NWA),gr6 - setlo %lo(HSR0_NWA),gr6 - or gr4,gr6,gr4 -1: - -#else -#error No default cache configuration set -#endif - - or gr4,gr5,gr5 - movgs gr5,hsr0 - bar - - LEDS 0x0008 - - sethi.p %hi(__head_mmu_enabled),gr19 - setlo %lo(__head_mmu_enabled),gr19 - jmpl @(gr19,gr0) - -__head_mmu_enabled: - icei @(gr0,gr0),#1 - dcei @(gr0,gr0),#1 - - LEDS 0x0009 - -#ifdef CONFIG_MMU - call __head_fr451_finalise_protection -#endif - - LEDS 0x000a - -############################################################################### -# -# set up the runtime environment -# -############################################################################### - - # clear the BSS area - sethi.p %hi(__bss_start),gr4 - setlo %lo(__bss_start),gr4 - sethi.p %hi(_end),gr5 - setlo %lo(_end),gr5 - or.p gr0,gr0,gr18 - or gr0,gr0,gr19 - -0: - stdi gr18,@(gr4,#0) - stdi gr18,@(gr4,#8) - stdi gr18,@(gr4,#16) - stdi.p gr18,@(gr4,#24) - addi gr4,#24,gr4 - subcc gr5,gr4,gr0,icc0 - bhi icc0,#2,0b - - LEDS 0x000b - - # save the SDRAM details - sethi.p %hi(__sdram_old_base),gr4 - setlo %lo(__sdram_old_base),gr4 - st gr24,@(gr4,gr0) - - sethi.p %hi(__sdram_base),gr5 - setlo %lo(__sdram_base),gr5 - sethi.p %hi(memory_start),gr4 - setlo %lo(memory_start),gr4 - st gr5,@(gr4,gr0) - - add gr25,gr5,gr25 - sethi.p %hi(memory_end),gr4 - setlo %lo(memory_end),gr4 - st gr25,@(gr4,gr0) - - # point the TBR at the kernel trap table - sethi.p %hi(__entry_kerneltrap_table),gr4 - setlo %lo(__entry_kerneltrap_table),gr4 - movgs gr4,tbr - - # set up the exception frame for init - sethi.p %hi(__kernel_frame0_ptr),gr28 - setlo %lo(__kernel_frame0_ptr),gr28 - sethi.p %hi(_gp),gr16 - setlo %lo(_gp),gr16 - sethi.p %hi(__entry_usertrap_table),gr4 - setlo %lo(__entry_usertrap_table),gr4 - - lddi @(gr28,#0),gr28 ; load __frame & current - ldi.p @(gr29,#4),gr15 ; set current_thread - - or gr0,gr0,fp - or gr28,gr0,sp - - sti.p gr4,@(gr28,REG_TBR) - setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5 - movgs gr5,isr - - # turn on and off various CPU services - movsg psr,gr22 - sethi.p %hi(#PSR_EM|PSR_EF|PSR_CM|PSR_NEM),gr4 - setlo %lo(#PSR_EM|PSR_EF|PSR_CM|PSR_NEM),gr4 - or gr22,gr4,gr22 - movgs gr22,psr - - andi gr22,#~(PSR_PIL|PSR_PS|PSR_S),gr22 - ori gr22,#PSR_ET,gr22 - sti gr22,@(gr28,REG_PSR) - - -############################################################################### -# -# set up the registers and jump into the kernel -# -############################################################################### - - LEDS 0x000c - - sethi.p #0xe5e5,gr3 - setlo #0xe5e5,gr3 - or.p gr3,gr0,gr4 - or gr3,gr0,gr5 - or.p gr3,gr0,gr6 - or gr3,gr0,gr7 - or.p gr3,gr0,gr8 - or gr3,gr0,gr9 - or.p gr3,gr0,gr10 - or gr3,gr0,gr11 - or.p gr3,gr0,gr12 - or gr3,gr0,gr13 - or.p gr3,gr0,gr14 - or gr3,gr0,gr17 - or.p gr3,gr0,gr18 - or gr3,gr0,gr19 - or.p gr3,gr0,gr20 - or gr3,gr0,gr21 - or.p gr3,gr0,gr23 - or gr3,gr0,gr24 - or.p gr3,gr0,gr25 - or gr3,gr0,gr26 - or.p gr3,gr0,gr27 -# or gr3,gr0,gr30 - or gr3,gr0,gr31 - movgs gr0,lr - movgs gr0,lcr - movgs gr0,ccr - movgs gr0,cccr - - # initialise the virtual interrupt handling - subcc gr0,gr0,gr0,icc2 /* set Z, clear C */ - -#ifdef CONFIG_MMU - movgs gr3,scr2 - movgs gr3,scr3 -#endif - - LEDS 0x0fff - - # invoke the debugging stub if present - # - arch/frv/kernel/debug-stub.c will shift control directly to init/main.c - # (it will not return here) - break - .globl __debug_stub_init_break -__debug_stub_init_break: - - # however, if you need to use an ICE, and don't care about using any userspace - # debugging tools (such as the ptrace syscall), you can just step over the break - # above and get to the kernel this way - # look at arch/frv/kernel/debug-stub.c: debug_stub_init() to see what you've missed - call start_kernel - - .globl __head_end -__head_end: - .size _boot, .-_boot - - # provide a point for GDB to place a break - .section .text..start,"ax" - .globl _start - .balign 4 -_start: - call _boot - - .previous -############################################################################### -# -# split a tile off of the region defined by GR8-GR9 -# -# ENTRY: EXIT: -# GR4 - IAMPR value representing tile -# GR5 - DAMPR value representing tile -# GR6 - IAMLR value representing tile -# GR7 - DAMLR value representing tile -# GR8 region base pointer [saved] -# GR9 region top pointer updated to exclude new tile -# GR11 xAMLR mask [saved] -# GR25 SDRAM size [saved] -# GR30 LED address [saved] -# -# - GR8 and GR9 should be rounded up/down to the nearest megabyte before calling -# -############################################################################### - .globl __head_split_region - .type __head_split_region,@function -__head_split_region: - subcc.p gr9,gr8,gr4,icc0 - setlos #31,gr5 - scan.p gr4,gr0,gr6 - beq icc0,#0,__head_region_empty - sub.p gr5,gr6,gr6 ; bit number of highest set bit (1MB=>20) - setlos #1,gr4 - sll.p gr4,gr6,gr4 ; size of region (1 << bitno) - subi gr6,#17,gr6 ; 1MB => 0x03 - slli.p gr6,#4,gr6 ; 1MB => 0x30 - sub gr9,gr4,gr9 ; move uncovered top down - - or gr9,gr6,gr4 - ori gr4,#xAMPRx_S_USER|xAMPRx_C_CACHED|xAMPRx_V,gr4 - or.p gr4,gr0,gr5 - - and gr4,gr11,gr6 - and.p gr5,gr11,gr7 - bralr - -__head_region_empty: - or.p gr0,gr0,gr4 - or gr0,gr0,gr5 - or.p gr0,gr0,gr6 - or gr0,gr0,gr7 - bralr - .size __head_split_region, .-__head_split_region - -############################################################################### -# -# write the 32-bit hex number in GR8 to ttyS0 -# -############################################################################### -#if 0 - .globl __head_write_to_ttyS0 - .type __head_write_to_ttyS0,@function -__head_write_to_ttyS0: - sethi.p %hi(0xfeff9c00),gr31 - setlo %lo(0xfeff9c00),gr31 - setlos #8,gr20 - -0: ldubi @(gr31,#5*8),gr21 - andi gr21,#0x60,gr21 - subicc gr21,#0x60,gr21,icc0 - bne icc0,#0,0b - -1: srli gr8,#28,gr21 - slli gr8,#4,gr8 - - addi gr21,#'0',gr21 - subicc gr21,#'9',gr0,icc0 - bls icc0,#2,2f - addi gr21,#'A'-'0'-10,gr21 -2: - stbi gr21,@(gr31,#0*8) - subicc gr20,#1,gr20,icc0 - bhi icc0,#2,1b - - setlos #'\r',gr21 - stbi gr21,@(gr31,#0*8) - - setlos #'\n',gr21 - stbi gr21,@(gr31,#0*8) - -3: ldubi @(gr31,#5*8),gr21 - andi gr21,#0x60,gr21 - subicc gr21,#0x60,gr21,icc0 - bne icc0,#0,3b - bralr - - .size __head_write_to_ttyS0, .-__head_write_to_ttyS0 -#endif diff --git a/arch/frv/kernel/head.inc b/arch/frv/kernel/head.inc deleted file mode 100644 index bff66628b99a..000000000000 --- a/arch/frv/kernel/head.inc +++ /dev/null @@ -1,50 +0,0 @@ -/* head.inc: head common definitions -*- asm -*- - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - - -#if defined(CONFIG_MB93090_MB00) -#define LED_ADDR (0x21200000+4) - -.macro LEDS val - sethi.p %hi(0xFFC00030),gr3 - setlo %lo(0xFFC00030),gr3 - lduh @(gr3,gr0),gr3 - andicc gr3,#0x100,gr0,icc0 - bne icc0,0,999f - - setlos #~\val,gr3 - st gr3,@(gr30,gr0) - membar - dcf @(gr30,gr0) - 999: -.endm - -#elif defined(CONFIG_MB93093_PDK) -#define LED_ADDR (0x20000023) - -.macro LEDS val - setlos #\val,gr3 - stb gr3,@(gr30,gr0) - membar -.endm - -#else -#define LED_ADDR 0 - -.macro LEDS val -.endm -#endif - -#ifdef CONFIG_MMU -__sdram_base = 0x00000000 /* base address to which SDRAM relocated */ -#else -__sdram_base = __page_offset /* base address to which SDRAM relocated */ -#endif diff --git a/arch/frv/kernel/irq-mb93091.c b/arch/frv/kernel/irq-mb93091.c deleted file mode 100644 index 091b2839be90..000000000000 --- a/arch/frv/kernel/irq-mb93091.c +++ /dev/null @@ -1,157 +0,0 @@ -/* irq-mb93091.c: MB93091 FPGA interrupt handling - * - * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/ptrace.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/bitops.h> - -#include <asm/io.h> -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/irc-regs.h> - -#define __reg16(ADDR) (*(volatile unsigned short *)(ADDR)) - -#define __get_IMR() ({ __reg16(0xffc00004); }) -#define __set_IMR(M) do { __reg16(0xffc00004) = (M); wmb(); } while(0) -#define __get_IFR() ({ __reg16(0xffc0000c); }) -#define __clr_IFR(M) do { __reg16(0xffc0000c) = ~(M); wmb(); } while(0) - - -/* - * on-motherboard FPGA PIC operations - */ -static void frv_fpga_mask(struct irq_data *d) -{ - uint16_t imr = __get_IMR(); - - imr |= 1 << (d->irq - IRQ_BASE_FPGA); - - __set_IMR(imr); -} - -static void frv_fpga_ack(struct irq_data *d) -{ - __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA)); -} - -static void frv_fpga_mask_ack(struct irq_data *d) -{ - uint16_t imr = __get_IMR(); - - imr |= 1 << (d->irq - IRQ_BASE_FPGA); - __set_IMR(imr); - - __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA)); -} - -static void frv_fpga_unmask(struct irq_data *d) -{ - uint16_t imr = __get_IMR(); - - imr &= ~(1 << (d->irq - IRQ_BASE_FPGA)); - - __set_IMR(imr); -} - -static struct irq_chip frv_fpga_pic = { - .name = "mb93091", - .irq_ack = frv_fpga_ack, - .irq_mask = frv_fpga_mask, - .irq_mask_ack = frv_fpga_mask_ack, - .irq_unmask = frv_fpga_unmask, -}; - -/* - * FPGA PIC interrupt handler - */ -static irqreturn_t fpga_interrupt(int irq, void *_mask) -{ - uint16_t imr, mask = (unsigned long) _mask; - - imr = __get_IMR(); - mask = mask & ~imr & __get_IFR(); - - /* poll all the triggered IRQs */ - while (mask) { - int irq; - - asm("scan %1,gr0,%0" : "=r"(irq) : "r"(mask)); - irq = 31 - irq; - mask &= ~(1 << irq); - - generic_handle_irq(IRQ_BASE_FPGA + irq); - } - - return IRQ_HANDLED; -} - -/* - * define an interrupt action for each FPGA PIC output - * - use dev_id to indicate the FPGA PIC input to output mappings - */ -static struct irqaction fpga_irq[4] = { - [0] = { - .handler = fpga_interrupt, - .flags = IRQF_SHARED, - .name = "fpga.0", - .dev_id = (void *) 0x0028UL, - }, - [1] = { - .handler = fpga_interrupt, - .flags = IRQF_SHARED, - .name = "fpga.1", - .dev_id = (void *) 0x0050UL, - }, - [2] = { - .handler = fpga_interrupt, - .flags = IRQF_SHARED, - .name = "fpga.2", - .dev_id = (void *) 0x1c00UL, - }, - [3] = { - .handler = fpga_interrupt, - .flags = IRQF_SHARED, - .name = "fpga.3", - .dev_id = (void *) 0x6386UL, - } -}; - -/* - * initialise the motherboard FPGA's PIC - */ -void __init fpga_init(void) -{ - int irq; - - /* all PIC inputs are all set to be low-level driven, apart from the - * NMI button (15) which is fixed at falling-edge - */ - __set_IMR(0x7ffe); - __clr_IFR(0x0000); - - for (irq = IRQ_BASE_FPGA + 1; irq <= IRQ_BASE_FPGA + 14; irq++) - irq_set_chip_and_handler(irq, &frv_fpga_pic, handle_level_irq); - - irq_set_chip_and_handler(IRQ_FPGA_NMI, &frv_fpga_pic, handle_edge_irq); - - /* the FPGA drives the first four external IRQ inputs on the CPU PIC */ - setup_irq(IRQ_CPU_EXTERNAL0, &fpga_irq[0]); - setup_irq(IRQ_CPU_EXTERNAL1, &fpga_irq[1]); - setup_irq(IRQ_CPU_EXTERNAL2, &fpga_irq[2]); - setup_irq(IRQ_CPU_EXTERNAL3, &fpga_irq[3]); -} diff --git a/arch/frv/kernel/irq-mb93093.c b/arch/frv/kernel/irq-mb93093.c deleted file mode 100644 index 1f3015cf80f5..000000000000 --- a/arch/frv/kernel/irq-mb93093.c +++ /dev/null @@ -1,129 +0,0 @@ -/* irq-mb93093.c: MB93093 FPGA interrupt handling - * - * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/ptrace.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/bitops.h> - -#include <asm/io.h> -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/irc-regs.h> - -#define __reg16(ADDR) (*(volatile unsigned short *)(__region_CS2 + (ADDR))) - -#define __get_IMR() ({ __reg16(0x0a); }) -#define __set_IMR(M) do { __reg16(0x0a) = (M); wmb(); } while(0) -#define __get_IFR() ({ __reg16(0x02); }) -#define __clr_IFR(M) do { __reg16(0x02) = ~(M); wmb(); } while(0) - -/* - * off-CPU FPGA PIC operations - */ -static void frv_fpga_mask(struct irq_data *d) -{ - uint16_t imr = __get_IMR(); - - imr |= 1 << (d->irq - IRQ_BASE_FPGA); - __set_IMR(imr); -} - -static void frv_fpga_ack(struct irq_data *d) -{ - __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA)); -} - -static void frv_fpga_mask_ack(struct irq_data *d) -{ - uint16_t imr = __get_IMR(); - - imr |= 1 << (d->irq - IRQ_BASE_FPGA); - __set_IMR(imr); - - __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA)); -} - -static void frv_fpga_unmask(struct irq_data *d) -{ - uint16_t imr = __get_IMR(); - - imr &= ~(1 << (d->irq - IRQ_BASE_FPGA)); - - __set_IMR(imr); -} - -static struct irq_chip frv_fpga_pic = { - .name = "mb93093", - .irq_ack = frv_fpga_ack, - .irq_mask = frv_fpga_mask, - .irq_mask_ack = frv_fpga_mask_ack, - .irq_unmask = frv_fpga_unmask, -}; - -/* - * FPGA PIC interrupt handler - */ -static irqreturn_t fpga_interrupt(int irq, void *_mask) -{ - uint16_t imr, mask = (unsigned long) _mask; - - imr = __get_IMR(); - mask = mask & ~imr & __get_IFR(); - - /* poll all the triggered IRQs */ - while (mask) { - int irq; - - asm("scan %1,gr0,%0" : "=r"(irq) : "r"(mask)); - irq = 31 - irq; - mask &= ~(1 << irq); - - generic_handle_irq(IRQ_BASE_FPGA + irq); - } - - return IRQ_HANDLED; -} - -/* - * define an interrupt action for each FPGA PIC output - * - use dev_id to indicate the FPGA PIC input to output mappings - */ -static struct irqaction fpga_irq[1] = { - [0] = { - .handler = fpga_interrupt, - .name = "fpga.0", - .dev_id = (void *) 0x0700UL, - } -}; - -/* - * initialise the motherboard FPGA's PIC - */ -void __init fpga_init(void) -{ - int irq; - - /* all PIC inputs are all set to be edge triggered */ - __set_IMR(0x0700); - __clr_IFR(0x0000); - - for (irq = IRQ_BASE_FPGA + 8; irq <= IRQ_BASE_FPGA + 10; irq++) - irq_set_chip_and_handler(irq, &frv_fpga_pic, handle_edge_irq); - - /* the FPGA drives external IRQ input #2 on the CPU PIC */ - setup_irq(IRQ_CPU_EXTERNAL2, &fpga_irq[0]); -} diff --git a/arch/frv/kernel/irq-mb93493.c b/arch/frv/kernel/irq-mb93493.c deleted file mode 100644 index 8ca5aa4ff595..000000000000 --- a/arch/frv/kernel/irq-mb93493.c +++ /dev/null @@ -1,147 +0,0 @@ -/* irq-mb93493.c: MB93493 companion chip interrupt handler - * - * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/ptrace.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/bitops.h> - -#include <asm/io.h> -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/irc-regs.h> -#include <asm/mb93493-irqs.h> -#include <asm/mb93493-regs.h> - -#define IRQ_ROUTE_ONE(X) (X##_ROUTE << (X - IRQ_BASE_MB93493)) - -#define IRQ_ROUTING \ - (IRQ_ROUTE_ONE(IRQ_MB93493_VDC) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_VCC) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_OUT) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_I2C_0) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_I2C_1) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_USB) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_LOCAL_BUS) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_PCMCIA) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_GPIO) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_IN)) - -/* - * daughter board PIC operations - * - there is no way to ACK interrupts in the MB93493 chip - */ -static void frv_mb93493_mask(struct irq_data *d) -{ - uint32_t iqsr; - volatile void *piqsr; - - if (IRQ_ROUTING & (1 << (d->irq - IRQ_BASE_MB93493))) - piqsr = __addr_MB93493_IQSR(1); - else - piqsr = __addr_MB93493_IQSR(0); - - iqsr = readl(piqsr); - iqsr &= ~(1 << (d->irq - IRQ_BASE_MB93493 + 16)); - writel(iqsr, piqsr); -} - -static void frv_mb93493_ack(struct irq_data *d) -{ -} - -static void frv_mb93493_unmask(struct irq_data *d) -{ - uint32_t iqsr; - volatile void *piqsr; - - if (IRQ_ROUTING & (1 << (d->irq - IRQ_BASE_MB93493))) - piqsr = __addr_MB93493_IQSR(1); - else - piqsr = __addr_MB93493_IQSR(0); - - iqsr = readl(piqsr); - iqsr |= 1 << (d->irq - IRQ_BASE_MB93493 + 16); - writel(iqsr, piqsr); -} - -static struct irq_chip frv_mb93493_pic = { - .name = "mb93093", - .irq_ack = frv_mb93493_ack, - .irq_mask = frv_mb93493_mask, - .irq_mask_ack = frv_mb93493_mask, - .irq_unmask = frv_mb93493_unmask, -}; - -/* - * MB93493 PIC interrupt handler - */ -static irqreturn_t mb93493_interrupt(int irq, void *_piqsr) -{ - volatile void *piqsr = _piqsr; - uint32_t iqsr; - - iqsr = readl(piqsr); - iqsr = iqsr & (iqsr >> 16) & 0xffff; - - /* poll all the triggered IRQs */ - while (iqsr) { - int irq; - - asm("scan %1,gr0,%0" : "=r"(irq) : "r"(iqsr)); - irq = 31 - irq; - iqsr &= ~(1 << irq); - - generic_handle_irq(IRQ_BASE_MB93493 + irq); - } - - return IRQ_HANDLED; -} - -/* - * define an interrupt action for each MB93493 PIC output - * - use dev_id to indicate the MB93493 PIC input to output mappings - */ -static struct irqaction mb93493_irq[2] = { - [0] = { - .handler = mb93493_interrupt, - .flags = IRQF_SHARED, - .name = "mb93493.0", - .dev_id = (void *) __addr_MB93493_IQSR(0), - }, - [1] = { - .handler = mb93493_interrupt, - .flags = IRQF_SHARED, - .name = "mb93493.1", - .dev_id = (void *) __addr_MB93493_IQSR(1), - } -}; - -/* - * initialise the motherboard MB93493's PIC - */ -void __init mb93493_init(void) -{ - int irq; - - for (irq = IRQ_BASE_MB93493 + 0; irq <= IRQ_BASE_MB93493 + 10; irq++) - irq_set_chip_and_handler(irq, &frv_mb93493_pic, - handle_edge_irq); - - /* the MB93493 drives external IRQ inputs on the CPU PIC */ - setup_irq(IRQ_CPU_MB93493_0, &mb93493_irq[0]); - setup_irq(IRQ_CPU_MB93493_1, &mb93493_irq[1]); -} diff --git a/arch/frv/kernel/irq.c b/arch/frv/kernel/irq.c deleted file mode 100644 index 93513e4ccd2b..000000000000 --- a/arch/frv/kernel/irq.c +++ /dev/null @@ -1,159 +0,0 @@ -/* irq.c: FRV IRQ handling - * - * Copyright (C) 2003, 2004, 2006 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/ptrace.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/timex.h> -#include <linux/random.h> -#include <linux/init.h> -#include <linux/kernel_stat.h> -#include <linux/irq.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/module.h> -#include <linux/bitops.h> - -#include <linux/atomic.h> -#include <asm/io.h> -#include <asm/smp.h> -#include <linux/uaccess.h> -#include <asm/pgalloc.h> -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/irc-regs.h> -#include <asm/gdb-stub.h> - -#define set_IRR(N,A,B,C,D) __set_IRR(N, (A << 28) | (B << 24) | (C << 20) | (D << 16)) - -extern void __init fpga_init(void); -#ifdef CONFIG_FUJITSU_MB93493 -extern void __init mb93493_init(void); -#endif - -#define __reg16(ADDR) (*(volatile unsigned short *)(ADDR)) - -atomic_t irq_err_count; - -int arch_show_interrupts(struct seq_file *p, int prec) -{ - seq_printf(p, "%*s: ", prec, "ERR"); - seq_printf(p, "%10u\n", atomic_read(&irq_err_count)); - return 0; -} - -/* - * on-CPU PIC operations - */ -static void frv_cpupic_ack(struct irq_data *d) -{ - __clr_RC(d->irq); - __clr_IRL(); -} - -static void frv_cpupic_mask(struct irq_data *d) -{ - __set_MASK(d->irq); -} - -static void frv_cpupic_mask_ack(struct irq_data *d) -{ - __set_MASK(d->irq); - __clr_RC(d->irq); - __clr_IRL(); -} - -static void frv_cpupic_unmask(struct irq_data *d) -{ - __clr_MASK(d->irq); -} - -static struct irq_chip frv_cpu_pic = { - .name = "cpu", - .irq_ack = frv_cpupic_ack, - .irq_mask = frv_cpupic_mask, - .irq_mask_ack = frv_cpupic_mask_ack, - .irq_unmask = frv_cpupic_unmask, -}; - -/* - * handles all normal device IRQs - * - registers are referred to by the __frame variable (GR28) - * - IRQ distribution is complicated in this arch because of the many PICs, the - * way they work and the way they cascade - */ -asmlinkage void do_IRQ(void) -{ - irq_enter(); - generic_handle_irq(__get_IRL()); - irq_exit(); -} - -/* - * handles all NMIs when not co-opted by the debugger - * - registers are referred to by the __frame variable (GR28) - */ -asmlinkage void do_NMI(void) -{ -} - -/* - * initialise the interrupt system - */ -void __init init_IRQ(void) -{ - int level; - - for (level = 1; level <= 14; level++) - irq_set_chip_and_handler(level, &frv_cpu_pic, - handle_level_irq); - - irq_set_handler(IRQ_CPU_TIMER0, handle_edge_irq); - - /* set the trigger levels for internal interrupt sources - * - timers all falling-edge - * - ERR0 is rising-edge - * - all others are high-level - */ - __set_IITMR(0, 0x003f0000); /* DMA0-3, TIMER0-2 */ - __set_IITMR(1, 0x20000000); /* ERR0-1, UART0-1, DMA4-7 */ - - /* route internal interrupts */ - set_IRR(4, IRQ_DMA3_LEVEL, IRQ_DMA2_LEVEL, IRQ_DMA1_LEVEL, - IRQ_DMA0_LEVEL); - set_IRR(5, 0, IRQ_TIMER2_LEVEL, IRQ_TIMER1_LEVEL, IRQ_TIMER0_LEVEL); - set_IRR(6, IRQ_GDBSTUB_LEVEL, IRQ_GDBSTUB_LEVEL, - IRQ_UART1_LEVEL, IRQ_UART0_LEVEL); - set_IRR(7, IRQ_DMA7_LEVEL, IRQ_DMA6_LEVEL, IRQ_DMA5_LEVEL, - IRQ_DMA4_LEVEL); - - /* route external interrupts */ - set_IRR(2, IRQ_XIRQ7_LEVEL, IRQ_XIRQ6_LEVEL, IRQ_XIRQ5_LEVEL, - IRQ_XIRQ4_LEVEL); - set_IRR(3, IRQ_XIRQ3_LEVEL, IRQ_XIRQ2_LEVEL, IRQ_XIRQ1_LEVEL, - IRQ_XIRQ0_LEVEL); - -#if defined(CONFIG_MB93091_VDK) - __set_TM1(0x55550000); /* XIRQ7-0 all active low */ -#elif defined(CONFIG_MB93093_PDK) - __set_TM1(0x15550000); /* XIRQ7 active high, 6-0 all active low */ -#else -#error dont know external IRQ trigger levels for this setup -#endif - - fpga_init(); -#ifdef CONFIG_FUJITSU_MB93493 - mb93493_init(); -#endif -} diff --git a/arch/frv/kernel/local.h b/arch/frv/kernel/local.h deleted file mode 100644 index 76606d13b1aa..000000000000 --- a/arch/frv/kernel/local.h +++ /dev/null @@ -1,59 +0,0 @@ -/* local.h: local definitions - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#ifndef _FRV_LOCAL_H -#define _FRV_LOCAL_H - -#include <asm/sections.h> - -#ifndef __ASSEMBLY__ - -/* dma.c */ -extern unsigned long frv_dma_inprogress; - -extern void frv_dma_pause_all(void); -extern void frv_dma_resume_all(void); - -/* sleep.S */ -extern asmlinkage void frv_cpu_suspend(unsigned long); -extern asmlinkage void frv_cpu_core_sleep(void); - -/* setup.c */ -extern unsigned long __nongprelbss pdm_suspend_mode; -extern void determine_clocks(int verbose); -extern int __nongprelbss clock_p0_current; -extern int __nongprelbss clock_cm_current; -extern int __nongprelbss clock_cmode_current; - -#ifdef CONFIG_PM -extern int __nongprelbss clock_cmodes_permitted; -extern unsigned long __nongprelbss clock_bits_settable; -#define CLOCK_BIT_CM 0x0000000f -#define CLOCK_BIT_CM_H 0x00000001 /* CLKC.CM can be set to 0 */ -#define CLOCK_BIT_CM_M 0x00000002 /* CLKC.CM can be set to 1 */ -#define CLOCK_BIT_CM_L 0x00000004 /* CLKC.CM can be set to 2 */ -#define CLOCK_BIT_P0 0x00000010 /* CLKC.P0 can be changed */ -#define CLOCK_BIT_CMODE 0x00000020 /* CLKC.CMODE can be changed */ - -extern void (*__power_switch_wake_setup)(void); -extern int (*__power_switch_wake_check)(void); -extern void (*__power_switch_wake_cleanup)(void); -#endif - -/* time.c */ -extern void time_divisor_init(void); - -/* cmode.S */ -extern asmlinkage void frv_change_cmode(int); - - -#endif /* __ASSEMBLY__ */ -#endif /* _FRV_LOCAL_H */ diff --git a/arch/frv/kernel/local64.h b/arch/frv/kernel/local64.h deleted file mode 100644 index 36c93b5cc239..000000000000 --- a/arch/frv/kernel/local64.h +++ /dev/null @@ -1 +0,0 @@ -#include <asm-generic/local64.h> diff --git a/arch/frv/kernel/module.c b/arch/frv/kernel/module.c deleted file mode 100644 index 9d9835f1fe2b..000000000000 --- a/arch/frv/kernel/module.c +++ /dev/null @@ -1,27 +0,0 @@ -/* module.c: FRV specific module loading bits - * - * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from arch/i386/kernel/module.c, Copyright (C) 2001 Rusty Russell. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ -#include <linux/moduleloader.h> -#include <linux/elf.h> -#include <linux/vmalloc.h> -#include <linux/fs.h> -#include <linux/string.h> -#include <linux/kernel.h> - -#if 0 -#define DEBUGP printk -#else -#define DEBUGP(fmt...) -#endif - -/* TODO: At least one of apply_relocate or apply_relocate_add must be - * implemented in order to get working module support. - */ diff --git a/arch/frv/kernel/pm-mb93093.c b/arch/frv/kernel/pm-mb93093.c deleted file mode 100644 index 8358e34a3fad..000000000000 --- a/arch/frv/kernel/pm-mb93093.c +++ /dev/null @@ -1,65 +0,0 @@ -/* - * FR-V MB93093 Power Management Routines - * - * Copyright (c) 2004 Red Hat, Inc. - * - * Written by: msalter@redhat.com - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License. - * - */ - -#include <linux/init.h> -#include <linux/pm.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/sysctl.h> -#include <linux/errno.h> -#include <linux/delay.h> -#include <linux/uaccess.h> - -#include <asm/mb86943a.h> - -#include "local.h" - -static unsigned long imask; -/* - * Setup interrupt masks, etc to enable wakeup by power switch - */ -static void mb93093_power_switch_setup(void) -{ - /* mask all but FPGA interrupt sources. */ - imask = *(volatile unsigned long *)0xfeff9820; - *(volatile unsigned long *)0xfeff9820 = ~(1 << (IRQ_XIRQ2_LEVEL + 16)) & 0xfffe0000; -} - -/* - * Cleanup interrupt masks, etc after wakeup by power switch - */ -static void mb93093_power_switch_cleanup(void) -{ - *(volatile unsigned long *)0xfeff9820 = imask; -} - -/* - * Return non-zero if wakeup irq was caused by power switch - */ -static int mb93093_power_switch_check(void) -{ - return 1; -} - -/* - * Initialize power interface - */ -static int __init mb93093_pm_init(void) -{ - __power_switch_wake_setup = mb93093_power_switch_setup; - __power_switch_wake_check = mb93093_power_switch_check; - __power_switch_wake_cleanup = mb93093_power_switch_cleanup; - return 0; -} - -__initcall(mb93093_pm_init); - diff --git a/arch/frv/kernel/pm.c b/arch/frv/kernel/pm.c deleted file mode 100644 index 051ccecbf7f1..000000000000 --- a/arch/frv/kernel/pm.c +++ /dev/null @@ -1,352 +0,0 @@ -/* - * FR-V Power Management Routines - * - * Copyright (c) 2004 Red Hat, Inc. - * - * Based on SA1100 version: - * Copyright (c) 2001 Cliff Brake <cbrake@accelent.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License. - * - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/pm.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/sysctl.h> -#include <linux/errno.h> -#include <linux/delay.h> -#include <linux/uaccess.h> - -#include <asm/mb86943a.h> - -#include "local.h" - -/* - * Debug macros - */ -#define DEBUG - -int pm_do_suspend(void) -{ - local_irq_disable(); - - __set_LEDS(0xb1); - - /* go zzz */ - frv_cpu_suspend(pdm_suspend_mode); - - __set_LEDS(0xb2); - - local_irq_enable(); - - return 0; -} - -static unsigned long __irq_mask; - -/* - * Setup interrupt masks, etc to enable wakeup by power switch - */ -static void __default_power_switch_setup(void) -{ - /* default is to mask all interrupt sources. */ - __irq_mask = *(unsigned long *)0xfeff9820; - *(unsigned long *)0xfeff9820 = 0xfffe0000; -} - -/* - * Cleanup interrupt masks, etc after wakeup by power switch - */ -static void __default_power_switch_cleanup(void) -{ - *(unsigned long *)0xfeff9820 = __irq_mask; -} - -/* - * Return non-zero if wakeup irq was caused by power switch - */ -static int __default_power_switch_check(void) -{ - return 1; -} - -void (*__power_switch_wake_setup)(void) = __default_power_switch_setup; -int (*__power_switch_wake_check)(void) = __default_power_switch_check; -void (*__power_switch_wake_cleanup)(void) = __default_power_switch_cleanup; - -int pm_do_bus_sleep(void) -{ - local_irq_disable(); - - /* - * Here is where we need some platform-dependent setup - * of the interrupt state so that appropriate wakeup - * sources are allowed and all others are masked. - */ - __power_switch_wake_setup(); - - __set_LEDS(0xa1); - - /* go zzz - * - * This is in a loop in case power switch shares an irq with other - * devices. The wake_check() tells us if we need to finish waking - * or go back to sleep. - */ - do { - frv_cpu_suspend(HSR0_PDM_BUS_SLEEP); - } while (__power_switch_wake_check && !__power_switch_wake_check()); - - __set_LEDS(0xa2); - - /* - * Here is where we need some platform-dependent restore - * of the interrupt state prior to being called. - */ - __power_switch_wake_cleanup(); - - local_irq_enable(); - - return 0; -} - -unsigned long sleep_phys_sp(void *sp) -{ - return virt_to_phys(sp); -} - -#ifdef CONFIG_SYSCTL -/* - * Use a temporary sysctl number. Horrid, but will be cleaned up in 2.6 - * when all the PM interfaces exist nicely. - */ -#define CTL_PM_SUSPEND 1 -#define CTL_PM_CMODE 2 -#define CTL_PM_P0 4 -#define CTL_PM_CM 5 - -static int user_atoi(char __user *ubuf, size_t len) -{ - char buf[16]; - unsigned long ret; - - if (len > 15) - return -EINVAL; - - if (copy_from_user(buf, ubuf, len)) - return -EFAULT; - - buf[len] = 0; - ret = simple_strtoul(buf, NULL, 0); - if (ret > INT_MAX) - return -ERANGE; - return ret; -} - -/* - * Send us to sleep. - */ -static int sysctl_pm_do_suspend(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *fpos) -{ - int mode; - - if (*lenp <= 0) - return -EIO; - - mode = user_atoi(buffer, *lenp); - switch (mode) { - case 1: - return pm_do_suspend(); - - case 5: - return pm_do_bus_sleep(); - - default: - return -EINVAL; - } -} - -static int try_set_cmode(int new_cmode) -{ - if (new_cmode > 15) - return -EINVAL; - if (!(clock_cmodes_permitted & (1<<new_cmode))) - return -EINVAL; - - /* now change cmode */ - local_irq_disable(); - frv_dma_pause_all(); - - frv_change_cmode(new_cmode); - - determine_clocks(0); - time_divisor_init(); - -#ifdef DEBUG - determine_clocks(1); -#endif - frv_dma_resume_all(); - local_irq_enable(); - - return 0; -} - - -static int cmode_procctl(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *fpos) -{ - int new_cmode; - - if (!write) - return proc_dointvec(ctl, write, buffer, lenp, fpos); - - new_cmode = user_atoi(buffer, *lenp); - - return try_set_cmode(new_cmode)?:*lenp; -} - -static int try_set_p0(int new_p0) -{ - unsigned long flags, clkc; - - if (new_p0 < 0 || new_p0 > 1) - return -EINVAL; - - local_irq_save(flags); - __set_PSR(flags & ~PSR_ET); - - frv_dma_pause_all(); - - clkc = __get_CLKC(); - if (new_p0) - clkc |= CLKC_P0; - else - clkc &= ~CLKC_P0; - __set_CLKC(clkc); - - determine_clocks(0); - time_divisor_init(); - -#ifdef DEBUG - determine_clocks(1); -#endif - frv_dma_resume_all(); - local_irq_restore(flags); - return 0; -} - -static int try_set_cm(int new_cm) -{ - unsigned long flags, clkc; - - if (new_cm < 0 || new_cm > 1) - return -EINVAL; - - local_irq_save(flags); - __set_PSR(flags & ~PSR_ET); - - frv_dma_pause_all(); - - clkc = __get_CLKC(); - clkc &= ~CLKC_CM; - clkc |= new_cm; - __set_CLKC(clkc); - - determine_clocks(0); - time_divisor_init(); - -#if 1 //def DEBUG - determine_clocks(1); -#endif - - frv_dma_resume_all(); - local_irq_restore(flags); - return 0; -} - -static int p0_procctl(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *fpos) -{ - int new_p0; - - if (!write) - return proc_dointvec(ctl, write, buffer, lenp, fpos); - - new_p0 = user_atoi(buffer, *lenp); - - return try_set_p0(new_p0)?:*lenp; -} - -static int cm_procctl(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *fpos) -{ - int new_cm; - - if (!write) - return proc_dointvec(ctl, write, buffer, lenp, fpos); - - new_cm = user_atoi(buffer, *lenp); - - return try_set_cm(new_cm)?:*lenp; -} - -static struct ctl_table pm_table[] = -{ - { - .procname = "suspend", - .data = NULL, - .maxlen = 0, - .mode = 0200, - .proc_handler = sysctl_pm_do_suspend, - }, - { - .procname = "cmode", - .data = &clock_cmode_current, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = cmode_procctl, - }, - { - .procname = "p0", - .data = &clock_p0_current, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = p0_procctl, - }, - { - .procname = "cm", - .data = &clock_cm_current, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = cm_procctl, - }, - { } -}; - -static struct ctl_table pm_dir_table[] = -{ - { - .procname = "pm", - .mode = 0555, - .child = pm_table, - }, - { } -}; - -/* - * Initialize power interface - */ -static int __init pm_init(void) -{ - register_sysctl_table(pm_dir_table); - return 0; -} - -__initcall(pm_init); - -#endif diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c deleted file mode 100644 index a957b374e3a6..000000000000 --- a/arch/frv/kernel/process.c +++ /dev/null @@ -1,275 +0,0 @@ -/* process.c: FRV specific parts of process handling - * - * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from arch/m68k/kernel/process.c - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/sched/debug.h> -#include <linux/sched/task.h> -#include <linux/sched/task_stack.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/stddef.h> -#include <linux/unistd.h> -#include <linux/ptrace.h> -#include <linux/slab.h> -#include <linux/user.h> -#include <linux/elf.h> -#include <linux/reboot.h> -#include <linux/interrupt.h> -#include <linux/pagemap.h> -#include <linux/rcupdate.h> - -#include <asm/asm-offsets.h> -#include <linux/uaccess.h> -#include <asm/setup.h> -#include <asm/pgtable.h> -#include <asm/tlb.h> -#include <asm/gdb-stub.h> -#include <asm/mb-regs.h> - -#include "local.h" - -asmlinkage void ret_from_fork(void); -asmlinkage void ret_from_kernel_thread(void); - -#include <asm/pgalloc.h> - -void (*pm_power_off)(void); -EXPORT_SYMBOL(pm_power_off); - -static void core_sleep_idle(void) -{ -#ifdef LED_DEBUG_SLEEP - /* Show that we're sleeping... */ - __set_LEDS(0x55aa); -#endif - frv_cpu_core_sleep(); -#ifdef LED_DEBUG_SLEEP - /* ... and that we woke up */ - __set_LEDS(0); -#endif - mb(); -} - -void arch_cpu_idle(void) -{ - if (!frv_dma_inprogress) - core_sleep_idle(); - else - local_irq_enable(); -} - -void machine_restart(char * __unused) -{ - unsigned long reset_addr; -#ifdef CONFIG_GDBSTUB - gdbstub_exit(0); -#endif - - if (PSR_IMPLE(__get_PSR()) == PSR_IMPLE_FR551) - reset_addr = 0xfefff500; - else - reset_addr = 0xfeff0500; - - /* Software reset. */ - asm volatile(" dcef @(gr0,gr0),1 ! membar !" - " sti %1,@(%0,0) !" - " nop ! nop ! nop ! nop ! nop ! " - " nop ! nop ! nop ! nop ! nop ! " - " nop ! nop ! nop ! nop ! nop ! " - " nop ! nop ! nop ! nop ! nop ! " - : : "r" (reset_addr), "r" (1) ); - - for (;;) - ; -} - -void machine_halt(void) -{ -#ifdef CONFIG_GDBSTUB - gdbstub_exit(0); -#endif - - for (;;); -} - -void machine_power_off(void) -{ -#ifdef CONFIG_GDBSTUB - gdbstub_exit(0); -#endif - - for (;;); -} - -void flush_thread(void) -{ - /* nothing */ -} - -inline unsigned long user_stack(const struct pt_regs *regs) -{ - while (regs->next_frame) - regs = regs->next_frame; - return user_mode(regs) ? regs->sp : 0; -} - -/* - * set up the kernel stack and exception frames for a new process - */ -int copy_thread(unsigned long clone_flags, - unsigned long usp, unsigned long arg, - struct task_struct *p) -{ - struct pt_regs *childregs; - - childregs = (struct pt_regs *) - (task_stack_page(p) + THREAD_SIZE - FRV_FRAME0_SIZE); - - /* set up the userspace frame (the only place that the USP is stored) */ - *childregs = *current_pt_regs(); - - p->thread.frame = childregs; - p->thread.curr = p; - p->thread.sp = (unsigned long) childregs; - p->thread.fp = 0; - p->thread.lr = 0; - p->thread.frame0 = childregs; - - if (unlikely(p->flags & PF_KTHREAD)) { - childregs->gr9 = usp; /* function */ - childregs->gr8 = arg; - p->thread.pc = (unsigned long) ret_from_kernel_thread; - save_user_regs(p->thread.user); - return 0; - } - if (usp) - childregs->sp = usp; - childregs->next_frame = NULL; - - p->thread.pc = (unsigned long) ret_from_fork; - - /* the new TLS pointer is passed in as arg #5 to sys_clone() */ - if (clone_flags & CLONE_SETTLS) - childregs->gr29 = childregs->gr12; - - save_user_regs(p->thread.user); - - return 0; -} /* end copy_thread() */ - -unsigned long get_wchan(struct task_struct *p) -{ - struct pt_regs *regs0; - unsigned long fp, pc; - unsigned long stack_limit; - int count = 0; - if (!p || p == current || p->state == TASK_RUNNING) - return 0; - - stack_limit = (unsigned long) (p + 1); - fp = p->thread.fp; - regs0 = p->thread.frame0; - - do { - if (fp < stack_limit || fp >= (unsigned long) regs0 || fp & 3) - return 0; - - pc = ((unsigned long *) fp)[2]; - - /* FIXME: This depends on the order of these functions. */ - if (!in_sched_functions(pc)) - return pc; - - fp = *(unsigned long *) fp; - } while (count++ < 16); - - return 0; -} - -int elf_check_arch(const struct elf32_hdr *hdr) -{ - unsigned long hsr0 = __get_HSR(0); - unsigned long psr = __get_PSR(); - - if (hdr->e_machine != EM_FRV) - return 0; - - switch (hdr->e_flags & EF_FRV_GPR_MASK) { - case EF_FRV_GPR64: - if ((hsr0 & HSR0_GRN) == HSR0_GRN_32) - return 0; - case EF_FRV_GPR32: - case 0: - break; - default: - return 0; - } - - switch (hdr->e_flags & EF_FRV_FPR_MASK) { - case EF_FRV_FPR64: - if ((hsr0 & HSR0_FRN) == HSR0_FRN_32) - return 0; - case EF_FRV_FPR32: - case EF_FRV_FPR_NONE: - case 0: - break; - default: - return 0; - } - - if ((hdr->e_flags & EF_FRV_MULADD) == EF_FRV_MULADD) - if (PSR_IMPLE(psr) != PSR_IMPLE_FR405 && - PSR_IMPLE(psr) != PSR_IMPLE_FR451) - return 0; - - switch (hdr->e_flags & EF_FRV_CPU_MASK) { - case EF_FRV_CPU_GENERIC: - break; - case EF_FRV_CPU_FR300: - case EF_FRV_CPU_SIMPLE: - case EF_FRV_CPU_TOMCAT: - default: - return 0; - case EF_FRV_CPU_FR400: - if (PSR_IMPLE(psr) != PSR_IMPLE_FR401 && - PSR_IMPLE(psr) != PSR_IMPLE_FR405 && - PSR_IMPLE(psr) != PSR_IMPLE_FR451 && - PSR_IMPLE(psr) != PSR_IMPLE_FR551) - return 0; - break; - case EF_FRV_CPU_FR450: - if (PSR_IMPLE(psr) != PSR_IMPLE_FR451) - return 0; - break; - case EF_FRV_CPU_FR500: - if (PSR_IMPLE(psr) != PSR_IMPLE_FR501) - return 0; - break; - case EF_FRV_CPU_FR550: - if (PSR_IMPLE(psr) != PSR_IMPLE_FR551) - return 0; - break; - } - - return 1; -} - -int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpregs) -{ - memcpy(fpregs, - ¤t->thread.user->f, - sizeof(current->thread.user->f)); - return 1; -} diff --git a/arch/frv/kernel/ptrace.c b/arch/frv/kernel/ptrace.c deleted file mode 100644 index 49768401ce0f..000000000000 --- a/arch/frv/kernel/ptrace.c +++ /dev/null @@ -1,377 +0,0 @@ -/* ptrace.c: FRV specific parts of process tracing - * - * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from arch/m68k/kernel/ptrace.c - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/errno.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/security.h> -#include <linux/signal.h> -#include <linux/regset.h> -#include <linux/elf.h> -#include <linux/tracehook.h> - -#include <linux/uaccess.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/processor.h> -#include <asm/unistd.h> - -/* - * does not yet catch signals sent when the child dies. - * in exit.c or in signal.c. - */ - -/* - * retrieve the contents of FRV userspace general registers - */ -static int genregs_get(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - const struct user_int_regs *iregs = &target->thread.user->i; - int ret; - - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - iregs, 0, sizeof(*iregs)); - if (ret < 0) - return ret; - - return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - sizeof(*iregs), -1); -} - -/* - * update the contents of the FRV userspace general registers - */ -static int genregs_set(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - struct user_int_regs *iregs = &target->thread.user->i; - unsigned int offs_gr0, offs_gr1; - int ret; - - /* not allowed to set PSR or __status */ - if (pos < offsetof(struct user_int_regs, psr) + sizeof(long) && - pos + count > offsetof(struct user_int_regs, psr)) - return -EIO; - - if (pos < offsetof(struct user_int_regs, __status) + sizeof(long) && - pos + count > offsetof(struct user_int_regs, __status)) - return -EIO; - - /* set the control regs */ - offs_gr0 = offsetof(struct user_int_regs, gr[0]); - offs_gr1 = offsetof(struct user_int_regs, gr[1]); - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - iregs, 0, offs_gr0); - if (ret < 0) - return ret; - - /* skip GR0/TBR */ - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - offs_gr0, offs_gr1); - if (ret < 0) - return ret; - - /* set the general regs */ - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &iregs->gr[1], offs_gr1, sizeof(*iregs)); - if (ret < 0) - return ret; - - return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - sizeof(*iregs), -1); -} - -/* - * retrieve the contents of FRV userspace FP/Media registers - */ -static int fpmregs_get(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - const struct user_fpmedia_regs *fpregs = &target->thread.user->f; - int ret; - - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - fpregs, 0, sizeof(*fpregs)); - if (ret < 0) - return ret; - - return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - sizeof(*fpregs), -1); -} - -/* - * update the contents of the FRV userspace FP/Media registers - */ -static int fpmregs_set(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - struct user_fpmedia_regs *fpregs = &target->thread.user->f; - int ret; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - fpregs, 0, sizeof(*fpregs)); - if (ret < 0) - return ret; - - return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - sizeof(*fpregs), -1); -} - -/* - * determine if the FP/Media registers have actually been used - */ -static int fpmregs_active(struct task_struct *target, - const struct user_regset *regset) -{ - return tsk_used_math(target) ? regset->n : 0; -} - -/* - * Define the register sets available on the FRV under Linux - */ -enum frv_regset { - REGSET_GENERAL, - REGSET_FPMEDIA, -}; - -static const struct user_regset frv_regsets[] = { - /* - * General register format is: - * PSR, ISR, CCR, CCCR, LR, LCR, PC, (STATUS), SYSCALLNO, ORIG_G8 - * GNER0-1, IACC0, TBR, GR1-63 - */ - [REGSET_GENERAL] = { - .core_note_type = NT_PRSTATUS, - .n = ELF_NGREG, - .size = sizeof(long), - .align = sizeof(long), - .get = genregs_get, - .set = genregs_set, - }, - /* - * FPU/Media register format is: - * FR0-63, FNER0-1, MSR0-1, ACC0-7, ACCG0-8, FSR - */ - [REGSET_FPMEDIA] = { - .core_note_type = NT_PRFPREG, - .n = sizeof(struct user_fpmedia_regs) / sizeof(long), - .size = sizeof(long), - .align = sizeof(long), - .get = fpmregs_get, - .set = fpmregs_set, - .active = fpmregs_active, - }, -}; - -static const struct user_regset_view user_frv_native_view = { - .name = "frv", - .e_machine = EM_FRV, - .regsets = frv_regsets, - .n = ARRAY_SIZE(frv_regsets), -}; - -const struct user_regset_view *task_user_regset_view(struct task_struct *task) -{ - return &user_frv_native_view; -} - -/* - * Get contents of register REGNO in task TASK. - */ -static inline long get_reg(struct task_struct *task, int regno) -{ - struct user_context *user = task->thread.user; - - if (regno < 0 || regno >= PT__END) - return 0; - - return ((unsigned long *) user)[regno]; -} - -/* - * Write contents of register REGNO in task TASK. - */ -static inline int put_reg(struct task_struct *task, int regno, - unsigned long data) -{ - struct user_context *user = task->thread.user; - - if (regno < 0 || regno >= PT__END) - return -EIO; - - switch (regno) { - case PT_GR(0): - return 0; - case PT_PSR: - case PT__STATUS: - return -EIO; - default: - ((unsigned long *) user)[regno] = data; - return 0; - } -} - -/* - * Called by kernel/ptrace.c when detaching.. - * - * Control h/w single stepping - */ -void user_enable_single_step(struct task_struct *child) -{ - child->thread.frame0->__status |= REG__STATUS_STEP; -} - -void user_disable_single_step(struct task_struct *child) -{ - child->thread.frame0->__status &= ~REG__STATUS_STEP; -} - -void ptrace_disable(struct task_struct *child) -{ - user_disable_single_step(child); -} - -long arch_ptrace(struct task_struct *child, long request, - unsigned long addr, unsigned long data) -{ - unsigned long tmp; - int ret; - int regno = addr >> 2; - unsigned long __user *datap = (unsigned long __user *) data; - - switch (request) { - /* read the word at location addr in the USER area. */ - case PTRACE_PEEKUSR: { - tmp = 0; - ret = -EIO; - if (addr & 3) - break; - - ret = 0; - switch (regno) { - case 0 ... PT__END - 1: - tmp = get_reg(child, regno); - break; - - case PT__END + 0: - tmp = child->mm->end_code - child->mm->start_code; - break; - - case PT__END + 1: - tmp = child->mm->end_data - child->mm->start_data; - break; - - case PT__END + 2: - tmp = child->mm->start_stack - child->mm->start_brk; - break; - - case PT__END + 3: - tmp = child->mm->start_code; - break; - - case PT__END + 4: - tmp = child->mm->start_stack; - break; - - default: - ret = -EIO; - break; - } - - if (ret == 0) - ret = put_user(tmp, datap); - break; - } - - case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ - ret = -EIO; - if (addr & 3) - break; - - switch (regno) { - case 0 ... PT__END - 1: - ret = put_reg(child, regno, data); - break; - } - break; - - case PTRACE_GETREGS: /* Get all integer regs from the child. */ - return copy_regset_to_user(child, &user_frv_native_view, - REGSET_GENERAL, - 0, sizeof(child->thread.user->i), - datap); - - case PTRACE_SETREGS: /* Set all integer regs in the child. */ - return copy_regset_from_user(child, &user_frv_native_view, - REGSET_GENERAL, - 0, sizeof(child->thread.user->i), - datap); - - case PTRACE_GETFPREGS: /* Get the child FP/Media state. */ - return copy_regset_to_user(child, &user_frv_native_view, - REGSET_FPMEDIA, - 0, sizeof(child->thread.user->f), - datap); - - case PTRACE_SETFPREGS: /* Set the child FP/Media state. */ - return copy_regset_from_user(child, &user_frv_native_view, - REGSET_FPMEDIA, - 0, sizeof(child->thread.user->f), - datap); - - default: - ret = ptrace_request(child, request, addr, data); - break; - } - return ret; -} - -/* - * handle tracing of system call entry - * - return the revised system call number or ULONG_MAX to cause ENOSYS - */ -asmlinkage unsigned long syscall_trace_entry(void) -{ - __frame->__status |= REG__STATUS_SYSC_ENTRY; - if (tracehook_report_syscall_entry(__frame)) { - /* tracing decided this syscall should not happen, so - * We'll return a bogus call number to get an ENOSYS - * error, but leave the original number in - * __frame->syscallno - */ - return ULONG_MAX; - } - - return __frame->syscallno; -} - -/* - * handle tracing of system call exit - */ -asmlinkage void syscall_trace_exit(void) -{ - __frame->__status |= REG__STATUS_SYSC_EXIT; - tracehook_report_syscall_exit(__frame, 0); -} diff --git a/arch/frv/kernel/setup.c b/arch/frv/kernel/setup.c deleted file mode 100644 index 9f4a9a607dbe..000000000000 --- a/arch/frv/kernel/setup.c +++ /dev/null @@ -1,1178 +0,0 @@ -/* setup.c: FRV specific setup - * - * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from arch/m68k/kernel/setup.c - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <generated/utsrelease.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/fs.h> -#include <linux/mm.h> -#include <linux/fb.h> -#include <linux/console.h> -#include <linux/genhd.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/major.h> -#include <linux/bootmem.h> -#include <linux/highmem.h> -#include <linux/seq_file.h> -#include <linux/serial.h> -#include <linux/serial_core.h> -#include <linux/serial_reg.h> -#include <linux/serial_8250.h> - -#include <asm/setup.h> -#include <asm/irq.h> -#include <asm/sections.h> -#include <asm/pgalloc.h> -#include <asm/busctl-regs.h> -#include <asm/serial-regs.h> -#include <asm/timer-regs.h> -#include <asm/irc-regs.h> -#include <asm/spr-regs.h> -#include <asm/mb-regs.h> -#include <asm/mb93493-regs.h> -#include <asm/gdb-stub.h> -#include <asm/io.h> - -#ifdef CONFIG_BLK_DEV_INITRD -#include <asm/pgtable.h> -#endif - -#include "local.h" - -#ifdef CONFIG_MB93090_MB00 -static void __init mb93090_display(void); -#endif -#ifdef CONFIG_MMU -static void __init setup_linux_memory(void); -#else -static void __init setup_uclinux_memory(void); -#endif - -#ifdef CONFIG_MB93090_MB00 -static char __initdata mb93090_banner[] = "FJ/RH FR-V Linux"; -static char __initdata mb93090_version[] = UTS_RELEASE; - -int __nongprelbss mb93090_mb00_detected; -#endif - -const char __frv_unknown_system[] = "unknown"; -const char __frv_mb93091_cb10[] = "mb93091-cb10"; -const char __frv_mb93091_cb11[] = "mb93091-cb11"; -const char __frv_mb93091_cb30[] = "mb93091-cb30"; -const char __frv_mb93091_cb41[] = "mb93091-cb41"; -const char __frv_mb93091_cb60[] = "mb93091-cb60"; -const char __frv_mb93091_cb70[] = "mb93091-cb70"; -const char __frv_mb93091_cb451[] = "mb93091-cb451"; -const char __frv_mb93090_mb00[] = "mb93090-mb00"; - -const char __frv_mb93493[] = "mb93493"; - -const char __frv_mb93093[] = "mb93093"; - -static const char *__nongprelbss cpu_series; -static const char *__nongprelbss cpu_core; -static const char *__nongprelbss cpu_silicon; -static const char *__nongprelbss cpu_mmu; -static const char *__nongprelbss cpu_system; -static const char *__nongprelbss cpu_board1; -static const char *__nongprelbss cpu_board2; - -static unsigned long __nongprelbss cpu_psr_all; -static unsigned long __nongprelbss cpu_hsr0_all; - -unsigned long __nongprelbss pdm_suspend_mode; - -unsigned long __nongprelbss rom_length; -unsigned long __nongprelbss memory_start; -unsigned long __nongprelbss memory_end; - -unsigned long __nongprelbss dma_coherent_mem_start; -unsigned long __nongprelbss dma_coherent_mem_end; - -unsigned long __initdata __sdram_old_base; -unsigned long __initdata num_mappedpages; - -char __initdata command_line[COMMAND_LINE_SIZE]; -char __initdata redboot_command_line[COMMAND_LINE_SIZE]; - -#ifdef CONFIG_PM -#define __pminit -#define __pminitdata -#define __pminitconst -#else -#define __pminit __init -#define __pminitdata __initdata -#define __pminitconst __initconst -#endif - -struct clock_cmode { - uint8_t xbus, sdram, corebus, core, dsu; -}; - -#define _frac(N,D) ((N)<<4 | (D)) -#define _x0_16 _frac(1,6) -#define _x0_25 _frac(1,4) -#define _x0_33 _frac(1,3) -#define _x0_375 _frac(3,8) -#define _x0_5 _frac(1,2) -#define _x0_66 _frac(2,3) -#define _x0_75 _frac(3,4) -#define _x1 _frac(1,1) -#define _x1_5 _frac(3,2) -#define _x2 _frac(2,1) -#define _x3 _frac(3,1) -#define _x4 _frac(4,1) -#define _x4_5 _frac(9,2) -#define _x6 _frac(6,1) -#define _x8 _frac(8,1) -#define _x9 _frac(9,1) - -int __nongprelbss clock_p0_current; -int __nongprelbss clock_cm_current; -int __nongprelbss clock_cmode_current; -#ifdef CONFIG_PM -int __nongprelbss clock_cmodes_permitted; -unsigned long __nongprelbss clock_bits_settable; -#endif - -static struct clock_cmode __pminitdata undef_clock_cmode = { _x1, _x1, _x1, _x1, _x1 }; - -static struct clock_cmode __pminitdata clock_cmodes_fr401_fr403[16] = { - [4] = { _x1, _x1, _x2, _x2, _x0_25 }, - [5] = { _x1, _x2, _x4, _x4, _x0_5 }, - [8] = { _x1, _x1, _x1, _x2, _x0_25 }, - [9] = { _x1, _x2, _x2, _x4, _x0_5 }, - [11] = { _x1, _x4, _x4, _x8, _x1 }, - [12] = { _x1, _x1, _x2, _x4, _x0_5 }, - [13] = { _x1, _x2, _x4, _x8, _x1 }, -}; - -static struct clock_cmode __pminitdata clock_cmodes_fr405[16] = { - [0] = { _x1, _x1, _x1, _x1, _x0_5 }, - [1] = { _x1, _x1, _x1, _x3, _x0_25 }, - [2] = { _x1, _x1, _x2, _x6, _x0_5 }, - [3] = { _x1, _x2, _x2, _x6, _x0_5 }, - [4] = { _x1, _x1, _x2, _x2, _x0_16 }, - [8] = { _x1, _x1, _x1, _x2, _x0_16 }, - [9] = { _x1, _x2, _x2, _x4, _x0_33 }, - [12] = { _x1, _x1, _x2, _x4, _x0_33 }, - [14] = { _x1, _x3, _x3, _x9, _x0_75 }, - [15] = { _x1, _x1_5, _x1_5, _x4_5, _x0_375 }, - -#define CLOCK_CMODES_PERMITTED_FR405 0xd31f -}; - -static struct clock_cmode __pminitdata clock_cmodes_fr555[16] = { - [0] = { _x1, _x2, _x2, _x4, _x0_33 }, - [1] = { _x1, _x3, _x3, _x6, _x0_5 }, - [2] = { _x1, _x2, _x4, _x8, _x0_66 }, - [3] = { _x1, _x1_5, _x3, _x6, _x0_5 }, - [4] = { _x1, _x3, _x3, _x9, _x0_75 }, - [5] = { _x1, _x2, _x2, _x6, _x0_5 }, - [6] = { _x1, _x1_5, _x1_5, _x4_5, _x0_375 }, -}; - -static const struct clock_cmode __pminitconst *clock_cmodes; -static int __pminitdata clock_doubled; - -static struct uart_port __pminitdata __frv_uart0 = { - .uartclk = 0, - .membase = (char *) UART0_BASE, - .irq = IRQ_CPU_UART0, - .regshift = 3, - .iotype = UPIO_MEM, - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, -}; - -static struct uart_port __pminitdata __frv_uart1 = { - .uartclk = 0, - .membase = (char *) UART1_BASE, - .irq = IRQ_CPU_UART1, - .regshift = 3, - .iotype = UPIO_MEM, - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, -}; - -#if 0 -static void __init printk_xampr(unsigned long ampr, unsigned long amlr, char i_d, int n) -{ - unsigned long phys, virt, cxn, size; - -#ifdef CONFIG_MMU - virt = amlr & 0xffffc000; - cxn = amlr & 0x3fff; -#else - virt = ampr & 0xffffc000; - cxn = 0; -#endif - phys = ampr & xAMPRx_PPFN; - size = 1 << (((ampr & xAMPRx_SS) >> 4) + 17); - - printk("%cAMPR%d: va %08lx-%08lx [pa %08lx] %c%c%c%c [cxn:%04lx]\n", - i_d, n, - virt, virt + size - 1, - phys, - ampr & xAMPRx_S ? 'S' : '-', - ampr & xAMPRx_C ? 'C' : '-', - ampr & DAMPRx_WP ? 'W' : '-', - ampr & xAMPRx_V ? 'V' : '-', - cxn - ); -} -#endif - -/*****************************************************************************/ -/* - * dump the memory map - */ -static void __init dump_memory_map(void) -{ - -#if 0 - /* dump the protection map */ - printk_xampr(__get_IAMPR(0), __get_IAMLR(0), 'I', 0); - printk_xampr(__get_IAMPR(1), __get_IAMLR(1), 'I', 1); - printk_xampr(__get_IAMPR(2), __get_IAMLR(2), 'I', 2); - printk_xampr(__get_IAMPR(3), __get_IAMLR(3), 'I', 3); - printk_xampr(__get_IAMPR(4), __get_IAMLR(4), 'I', 4); - printk_xampr(__get_IAMPR(5), __get_IAMLR(5), 'I', 5); - printk_xampr(__get_IAMPR(6), __get_IAMLR(6), 'I', 6); - printk_xampr(__get_IAMPR(7), __get_IAMLR(7), 'I', 7); - printk_xampr(__get_IAMPR(8), __get_IAMLR(8), 'I', 8); - printk_xampr(__get_IAMPR(9), __get_IAMLR(9), 'i', 9); - printk_xampr(__get_IAMPR(10), __get_IAMLR(10), 'I', 10); - printk_xampr(__get_IAMPR(11), __get_IAMLR(11), 'I', 11); - printk_xampr(__get_IAMPR(12), __get_IAMLR(12), 'I', 12); - printk_xampr(__get_IAMPR(13), __get_IAMLR(13), 'I', 13); - printk_xampr(__get_IAMPR(14), __get_IAMLR(14), 'I', 14); - printk_xampr(__get_IAMPR(15), __get_IAMLR(15), 'I', 15); - - printk_xampr(__get_DAMPR(0), __get_DAMLR(0), 'D', 0); - printk_xampr(__get_DAMPR(1), __get_DAMLR(1), 'D', 1); - printk_xampr(__get_DAMPR(2), __get_DAMLR(2), 'D', 2); - printk_xampr(__get_DAMPR(3), __get_DAMLR(3), 'D', 3); - printk_xampr(__get_DAMPR(4), __get_DAMLR(4), 'D', 4); - printk_xampr(__get_DAMPR(5), __get_DAMLR(5), 'D', 5); - printk_xampr(__get_DAMPR(6), __get_DAMLR(6), 'D', 6); - printk_xampr(__get_DAMPR(7), __get_DAMLR(7), 'D', 7); - printk_xampr(__get_DAMPR(8), __get_DAMLR(8), 'D', 8); - printk_xampr(__get_DAMPR(9), __get_DAMLR(9), 'D', 9); - printk_xampr(__get_DAMPR(10), __get_DAMLR(10), 'D', 10); - printk_xampr(__get_DAMPR(11), __get_DAMLR(11), 'D', 11); - printk_xampr(__get_DAMPR(12), __get_DAMLR(12), 'D', 12); - printk_xampr(__get_DAMPR(13), __get_DAMLR(13), 'D', 13); - printk_xampr(__get_DAMPR(14), __get_DAMLR(14), 'D', 14); - printk_xampr(__get_DAMPR(15), __get_DAMLR(15), 'D', 15); -#endif - -#if 0 - /* dump the bus controller registers */ - printk("LGCR: %08lx\n", __get_LGCR()); - printk("Master: %08lx-%08lx CR=%08lx\n", - __get_LEMBR(), __get_LEMBR() + __get_LEMAM(), - __get_LMAICR()); - - int loop; - for (loop = 1; loop <= 7; loop++) { - unsigned long lcr = __get_LCR(loop), lsbr = __get_LSBR(loop); - printk("CS#%d: %08lx-%08lx %c%c%c%c%c%c%c%c%c\n", - loop, - lsbr, lsbr + __get_LSAM(loop), - lcr & 0x80000000 ? 'r' : '-', - lcr & 0x40000000 ? 'w' : '-', - lcr & 0x08000000 ? 'b' : '-', - lcr & 0x04000000 ? 'B' : '-', - lcr & 0x02000000 ? 'C' : '-', - lcr & 0x01000000 ? 'D' : '-', - lcr & 0x00800000 ? 'W' : '-', - lcr & 0x00400000 ? 'R' : '-', - (lcr & 0x00030000) == 0x00000000 ? '4' : - (lcr & 0x00030000) == 0x00010000 ? '2' : - (lcr & 0x00030000) == 0x00020000 ? '1' : - '-' - ); - } -#endif - -#if 0 - printk("\n"); -#endif -} /* end dump_memory_map() */ - -/*****************************************************************************/ -/* - * attempt to detect a VDK motherboard and DAV daughter board on an MB93091 system - */ -#ifdef CONFIG_MB93091_VDK -static void __init detect_mb93091(void) -{ -#ifdef CONFIG_MB93090_MB00 - /* Detect CB70 without motherboard */ - if (!(cpu_system == __frv_mb93091_cb70 && ((*(unsigned short *)0xffc00030) & 0x100))) { - cpu_board1 = __frv_mb93090_mb00; - mb93090_mb00_detected = 1; - } -#endif - -#ifdef CONFIG_FUJITSU_MB93493 - cpu_board2 = __frv_mb93493; -#endif - -} /* end detect_mb93091() */ -#endif - -/*****************************************************************************/ -/* - * determine the CPU type and set appropriate parameters - * - * Family Series CPU Core Silicon Imple Vers - * ---------------------------------------------------------- - * FR-V --+-> FR400 --+-> FR401 --+-> MB93401 02 00 [1] - * | | | - * | | +-> MB93401/A 02 01 - * | | | - * | | +-> MB93403 02 02 - * | | - * | +-> FR405 ----> MB93405 04 00 - * | - * +-> FR450 ----> FR451 ----> MB93451 05 00 - * | - * +-> FR500 ----> FR501 --+-> MB93501 01 01 [2] - * | | - * | +-> MB93501/A 01 02 - * | - * +-> FR550 --+-> FR551 ----> MB93555 03 01 - * - * [1] The MB93401 is an obsolete CPU replaced by the MB93401A - * [2] The MB93501 is an obsolete CPU replaced by the MB93501A - * - * Imple is PSR(Processor Status Register)[31:28]. - * Vers is PSR(Processor Status Register)[27:24]. - * - * A "Silicon" consists of CPU core and some on-chip peripherals. - */ -static void __init determine_cpu(void) -{ - unsigned long hsr0 = __get_HSR(0); - unsigned long psr = __get_PSR(); - - /* work out what selectable services the CPU supports */ - __set_PSR(psr | PSR_EM | PSR_EF | PSR_CM | PSR_NEM); - cpu_psr_all = __get_PSR(); - __set_PSR(psr); - - __set_HSR(0, hsr0 | HSR0_GRLE | HSR0_GRHE | HSR0_FRLE | HSR0_FRHE); - cpu_hsr0_all = __get_HSR(0); - __set_HSR(0, hsr0); - - /* derive other service specs from the CPU type */ - cpu_series = "unknown"; - cpu_core = "unknown"; - cpu_silicon = "unknown"; - cpu_mmu = "Prot"; - cpu_system = __frv_unknown_system; - clock_cmodes = NULL; - clock_doubled = 0; -#ifdef CONFIG_PM - clock_bits_settable = CLOCK_BIT_CM_H | CLOCK_BIT_CM_M | CLOCK_BIT_P0; -#endif - - switch (PSR_IMPLE(psr)) { - case PSR_IMPLE_FR401: - cpu_series = "fr400"; - cpu_core = "fr401"; - pdm_suspend_mode = HSR0_PDM_PLL_RUN; - - switch (PSR_VERSION(psr)) { - case PSR_VERSION_FR401_MB93401: - cpu_silicon = "mb93401"; - cpu_system = __frv_mb93091_cb10; - clock_cmodes = clock_cmodes_fr401_fr403; - clock_doubled = 1; - break; - case PSR_VERSION_FR401_MB93401A: - cpu_silicon = "mb93401/A"; - cpu_system = __frv_mb93091_cb11; - clock_cmodes = clock_cmodes_fr401_fr403; - break; - case PSR_VERSION_FR401_MB93403: - cpu_silicon = "mb93403"; -#ifndef CONFIG_MB93093_PDK - cpu_system = __frv_mb93091_cb30; -#else - cpu_system = __frv_mb93093; -#endif - clock_cmodes = clock_cmodes_fr401_fr403; - break; - default: - break; - } - break; - - case PSR_IMPLE_FR405: - cpu_series = "fr400"; - cpu_core = "fr405"; - pdm_suspend_mode = HSR0_PDM_PLL_STOP; - - switch (PSR_VERSION(psr)) { - case PSR_VERSION_FR405_MB93405: - cpu_silicon = "mb93405"; - cpu_system = __frv_mb93091_cb60; - clock_cmodes = clock_cmodes_fr405; -#ifdef CONFIG_PM - clock_bits_settable |= CLOCK_BIT_CMODE; - clock_cmodes_permitted = CLOCK_CMODES_PERMITTED_FR405; -#endif - - /* the FPGA on the CB70 has extra registers - * - it has 0x0046 in the VDK_ID FPGA register at 0x1a0, which is - * how we tell the difference between it and a CB60 - */ - if (*(volatile unsigned short *) 0xffc001a0 == 0x0046) - cpu_system = __frv_mb93091_cb70; - break; - default: - break; - } - break; - - case PSR_IMPLE_FR451: - cpu_series = "fr450"; - cpu_core = "fr451"; - pdm_suspend_mode = HSR0_PDM_PLL_STOP; -#ifdef CONFIG_PM - clock_bits_settable |= CLOCK_BIT_CMODE; - clock_cmodes_permitted = CLOCK_CMODES_PERMITTED_FR405; -#endif - switch (PSR_VERSION(psr)) { - case PSR_VERSION_FR451_MB93451: - cpu_silicon = "mb93451"; - cpu_mmu = "Prot, SAT, xSAT, DAT"; - cpu_system = __frv_mb93091_cb451; - clock_cmodes = clock_cmodes_fr405; - break; - default: - break; - } - break; - - case PSR_IMPLE_FR501: - cpu_series = "fr500"; - cpu_core = "fr501"; - pdm_suspend_mode = HSR0_PDM_PLL_STOP; - - switch (PSR_VERSION(psr)) { - case PSR_VERSION_FR501_MB93501: cpu_silicon = "mb93501"; break; - case PSR_VERSION_FR501_MB93501A: cpu_silicon = "mb93501/A"; break; - default: - break; - } - break; - - case PSR_IMPLE_FR551: - cpu_series = "fr550"; - cpu_core = "fr551"; - pdm_suspend_mode = HSR0_PDM_PLL_RUN; - - switch (PSR_VERSION(psr)) { - case PSR_VERSION_FR551_MB93555: - cpu_silicon = "mb93555"; - cpu_mmu = "Prot, SAT"; - cpu_system = __frv_mb93091_cb41; - clock_cmodes = clock_cmodes_fr555; - clock_doubled = 1; - break; - default: - break; - } - break; - - default: - break; - } - - printk("- Series:%s CPU:%s Silicon:%s\n", - cpu_series, cpu_core, cpu_silicon); - -#ifdef CONFIG_MB93091_VDK - detect_mb93091(); -#endif - -#if defined(CONFIG_MB93093_PDK) && defined(CONFIG_FUJITSU_MB93493) - cpu_board2 = __frv_mb93493; -#endif - -} /* end determine_cpu() */ - -/*****************************************************************************/ -/* - * calculate the bus clock speed - */ -void __pminit determine_clocks(int verbose) -{ - const struct clock_cmode *mode, *tmode; - unsigned long clkc, psr, quot; - - clkc = __get_CLKC(); - psr = __get_PSR(); - - clock_p0_current = !!(clkc & CLKC_P0); - clock_cm_current = clkc & CLKC_CM; - clock_cmode_current = (clkc & CLKC_CMODE) >> CLKC_CMODE_s; - - if (verbose) - printk("psr=%08lx hsr0=%08lx clkc=%08lx\n", psr, __get_HSR(0), clkc); - - /* the CB70 has some alternative ways of setting the clock speed through switches accessed - * through the FPGA. */ - if (cpu_system == __frv_mb93091_cb70) { - unsigned short clkswr = *(volatile unsigned short *) 0xffc00104UL & 0x1fffUL; - - if (clkswr & 0x1000) - __clkin_clock_speed_HZ = 60000000UL; - else - __clkin_clock_speed_HZ = - ((clkswr >> 8) & 0xf) * 10000000 + - ((clkswr >> 4) & 0xf) * 1000000 + - ((clkswr ) & 0xf) * 100000; - } - /* the FR451 is currently fixed at 24MHz */ - else if (cpu_system == __frv_mb93091_cb451) { - //__clkin_clock_speed_HZ = 24000000UL; // CB451-FPGA - unsigned short clkswr = *(volatile unsigned short *) 0xffc00104UL & 0x1fffUL; - - if (clkswr & 0x1000) - __clkin_clock_speed_HZ = 60000000UL; - else - __clkin_clock_speed_HZ = - ((clkswr >> 8) & 0xf) * 10000000 + - ((clkswr >> 4) & 0xf) * 1000000 + - ((clkswr ) & 0xf) * 100000; - } - /* otherwise determine the clockspeed from VDK or other registers */ - else { - __clkin_clock_speed_HZ = __get_CLKIN(); - } - - /* look up the appropriate clock relationships table entry */ - mode = &undef_clock_cmode; - if (clock_cmodes) { - tmode = &clock_cmodes[(clkc & CLKC_CMODE) >> CLKC_CMODE_s]; - if (tmode->xbus) - mode = tmode; - } - -#define CLOCK(SRC,RATIO) ((SRC) * (((RATIO) >> 4) & 0x0f) / ((RATIO) & 0x0f)) - - if (clock_doubled) - __clkin_clock_speed_HZ <<= 1; - - __ext_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->xbus); - __sdram_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram); - __dsu_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->dsu); - - switch (clkc & CLKC_CM) { - case 0: /* High */ - __core_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->corebus); - __core_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->core); - break; - case 1: /* Medium */ - __core_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram); - __core_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram); - break; - case 2: /* Low; not supported */ - case 3: /* UNDEF */ - printk("Unsupported CLKC CM %ld\n", clkc & CLKC_CM); - panic("Bye"); - } - - __res_bus_clock_speed_HZ = __ext_bus_clock_speed_HZ; - if (clkc & CLKC_P0) - __res_bus_clock_speed_HZ >>= 1; - - if (verbose) { - printk("CLKIN: %lu.%3.3luMHz\n", - __clkin_clock_speed_HZ / 1000000, - (__clkin_clock_speed_HZ / 1000) % 1000); - - printk("CLKS:" - " ext=%luMHz res=%luMHz sdram=%luMHz cbus=%luMHz core=%luMHz dsu=%luMHz\n", - __ext_bus_clock_speed_HZ / 1000000, - __res_bus_clock_speed_HZ / 1000000, - __sdram_clock_speed_HZ / 1000000, - __core_bus_clock_speed_HZ / 1000000, - __core_clock_speed_HZ / 1000000, - __dsu_clock_speed_HZ / 1000000 - ); - } - - /* calculate the number of __delay() loop iterations per sec (2 insn loop) */ - __delay_loops_MHz = __core_clock_speed_HZ / (1000000 * 2); - - /* set the serial prescaler */ - __serial_clock_speed_HZ = __res_bus_clock_speed_HZ; - quot = 1; - while (__serial_clock_speed_HZ / quot / 16 / 65536 > 3000) - quot += 1; - - /* double the divisor if P0 is clear, so that if/when P0 is set, it's still achievable - * - we have to be careful - dividing too much can mean we can't get 115200 baud - */ - if (__serial_clock_speed_HZ > 32000000 && !(clkc & CLKC_P0)) - quot <<= 1; - - __serial_clock_speed_HZ /= quot; - __frv_uart0.uartclk = __serial_clock_speed_HZ; - __frv_uart1.uartclk = __serial_clock_speed_HZ; - - if (verbose) - printk(" uart=%luMHz\n", __serial_clock_speed_HZ / 1000000 * quot); - - while (!(__get_UART0_LSR() & UART_LSR_TEMT)) - continue; - - while (!(__get_UART1_LSR() & UART_LSR_TEMT)) - continue; - - __set_UCPVR(quot); - __set_UCPSR(0); -} /* end determine_clocks() */ - -/*****************************************************************************/ -/* - * reserve some DMA consistent memory - */ -#ifdef CONFIG_RESERVE_DMA_COHERENT -static void __init reserve_dma_coherent(void) -{ - unsigned long ampr; - - /* find the first non-kernel memory tile and steal it */ -#define __steal_AMPR(r) \ - if (__get_DAMPR(r) & xAMPRx_V) { \ - ampr = __get_DAMPR(r); \ - __set_DAMPR(r, ampr | xAMPRx_S | xAMPRx_C); \ - __set_IAMPR(r, 0); \ - goto found; \ - } - - __steal_AMPR(1); - __steal_AMPR(2); - __steal_AMPR(3); - __steal_AMPR(4); - __steal_AMPR(5); - __steal_AMPR(6); - - if (PSR_IMPLE(__get_PSR()) == PSR_IMPLE_FR551) { - __steal_AMPR(7); - __steal_AMPR(8); - __steal_AMPR(9); - __steal_AMPR(10); - __steal_AMPR(11); - __steal_AMPR(12); - __steal_AMPR(13); - __steal_AMPR(14); - } - - /* unable to grant any DMA consistent memory */ - printk("No DMA consistent memory reserved\n"); - return; - - found: - dma_coherent_mem_start = ampr & xAMPRx_PPFN; - ampr &= xAMPRx_SS; - ampr >>= 4; - ampr = 1 << (ampr - 3 + 20); - dma_coherent_mem_end = dma_coherent_mem_start + ampr; - - printk("DMA consistent memory reserved %lx-%lx\n", - dma_coherent_mem_start, dma_coherent_mem_end); - -} /* end reserve_dma_coherent() */ -#endif - -/*****************************************************************************/ -/* - * calibrate the delay loop - */ -void calibrate_delay(void) -{ - loops_per_jiffy = __delay_loops_MHz * (1000000 / HZ); - - printk("Calibrating delay loop... %lu.%02lu BogoMIPS\n", - loops_per_jiffy / (500000 / HZ), - (loops_per_jiffy / (5000 / HZ)) % 100); - -} /* end calibrate_delay() */ - -/*****************************************************************************/ -/* - * look through the command line for some things we need to know immediately - */ -static void __init parse_cmdline_early(char *cmdline) -{ - if (!cmdline) - return; - - while (*cmdline) { - if (*cmdline == ' ') - cmdline++; - - /* "mem=XXX[kKmM]" sets SDRAM size to <mem>, overriding the value we worked - * out from the SDRAM controller mask register - */ - if (!strncmp(cmdline, "mem=", 4)) { - unsigned long long mem_size; - - mem_size = memparse(cmdline + 4, &cmdline); - memory_end = memory_start + mem_size; - } - - while (*cmdline && *cmdline != ' ') - cmdline++; - } - -} /* end parse_cmdline_early() */ - -/*****************************************************************************/ -/* - * - */ -void __init setup_arch(char **cmdline_p) -{ -#ifdef CONFIG_MMU - printk("Linux FR-V port done by Red Hat Inc <dhowells@redhat.com>\n"); -#else - printk("uClinux FR-V port done by Red Hat Inc <dhowells@redhat.com>\n"); -#endif - - memcpy(boot_command_line, redboot_command_line, COMMAND_LINE_SIZE); - - determine_cpu(); - determine_clocks(1); - - /* For printk-directly-beats-on-serial-hardware hack */ - console_set_baud(115200); -#ifdef CONFIG_GDBSTUB - gdbstub_set_baud(115200); -#endif - -#ifdef CONFIG_RESERVE_DMA_COHERENT - reserve_dma_coherent(); -#endif - dump_memory_map(); - -#ifdef CONFIG_MB93090_MB00 - if (mb93090_mb00_detected) - mb93090_display(); -#endif - - /* register those serial ports that are available */ -#ifdef CONFIG_FRV_ONCPU_SERIAL -#ifndef CONFIG_GDBSTUB_UART0 - __reg(UART0_BASE + UART_IER * 8) = 0; - early_serial_setup(&__frv_uart0); -#endif -#ifndef CONFIG_GDBSTUB_UART1 - __reg(UART1_BASE + UART_IER * 8) = 0; - early_serial_setup(&__frv_uart1); -#endif -#endif - - /* deal with the command line - RedBoot may have passed one to the kernel */ - memcpy(command_line, boot_command_line, sizeof(command_line)); - *cmdline_p = &command_line[0]; - parse_cmdline_early(command_line); - - /* set up the memory description - * - by now the stack is part of the init task */ - printk("Memory %08lx-%08lx\n", memory_start, memory_end); - - BUG_ON(memory_start == memory_end); - - init_mm.start_code = (unsigned long) _stext; - init_mm.end_code = (unsigned long) _etext; - init_mm.end_data = (unsigned long) _edata; -#if 0 /* DAVIDM - don't set brk just incase someone decides to use it */ - init_mm.brk = (unsigned long) &_end; -#else - init_mm.brk = (unsigned long) 0; -#endif - -#ifdef DEBUG - printk("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n", - _stext, _etext, _sdata, _edata, __bss_start, __bss_stop); -#endif - -#ifdef CONFIG_VT -#if defined(CONFIG_VGA_CONSOLE) - conswitchp = &vga_con; -#elif defined(CONFIG_DUMMY_CONSOLE) - conswitchp = &dummy_con; -#endif -#endif - -#ifdef CONFIG_MMU - setup_linux_memory(); -#else - setup_uclinux_memory(); -#endif - - /* get kmalloc into gear */ - paging_init(); - - /* init DMA */ - frv_dma_init(); -#ifdef DEBUG - printk("Done setup_arch\n"); -#endif - - /* start the decrement timer running */ -// asm volatile("movgs %0,timerd" :: "r"(10000000)); -// __set_HSR(0, __get_HSR(0) | HSR0_ETMD); - -} /* end setup_arch() */ - -#if 0 -/*****************************************************************************/ -/* - * - */ -static int setup_arch_serial(void) -{ - /* register those serial ports that are available */ -#ifndef CONFIG_GDBSTUB_UART0 - early_serial_setup(&__frv_uart0); -#endif -#ifndef CONFIG_GDBSTUB_UART1 - early_serial_setup(&__frv_uart1); -#endif - - return 0; -} /* end setup_arch_serial() */ - -late_initcall(setup_arch_serial); -#endif - -/*****************************************************************************/ -/* - * set up the memory map for normal MMU linux - */ -#ifdef CONFIG_MMU -static void __init setup_linux_memory(void) -{ - unsigned long bootmap_size, low_top_pfn, kstart, kend, high_mem; - unsigned long physpages; - - kstart = (unsigned long) &__kernel_image_start - PAGE_OFFSET; - kend = (unsigned long) &__kernel_image_end - PAGE_OFFSET; - - kstart = kstart & PAGE_MASK; - kend = (kend + PAGE_SIZE - 1) & PAGE_MASK; - - /* give all the memory to the bootmap allocator, tell it to put the - * boot mem_map immediately following the kernel image - */ - bootmap_size = init_bootmem_node(NODE_DATA(0), - kend >> PAGE_SHIFT, /* map addr */ - memory_start >> PAGE_SHIFT, /* start of RAM */ - memory_end >> PAGE_SHIFT /* end of RAM */ - ); - - /* pass the memory that the kernel can immediately use over to the bootmem allocator */ - max_mapnr = physpages = (memory_end - memory_start) >> PAGE_SHIFT; - low_top_pfn = (KERNEL_LOWMEM_END - KERNEL_LOWMEM_START) >> PAGE_SHIFT; - high_mem = 0; - - if (physpages > low_top_pfn) { -#ifdef CONFIG_HIGHMEM - high_mem = physpages - low_top_pfn; -#else - max_mapnr = physpages = low_top_pfn; -#endif - } - else { - low_top_pfn = physpages; - } - - min_low_pfn = memory_start >> PAGE_SHIFT; - max_low_pfn = low_top_pfn; - max_pfn = memory_end >> PAGE_SHIFT; - - num_mappedpages = low_top_pfn; - - printk(KERN_NOTICE "%ldMB LOWMEM available.\n", low_top_pfn >> (20 - PAGE_SHIFT)); - - free_bootmem(memory_start, low_top_pfn << PAGE_SHIFT); - -#ifdef CONFIG_HIGHMEM - if (high_mem) - printk(KERN_NOTICE "%ldMB HIGHMEM available.\n", high_mem >> (20 - PAGE_SHIFT)); -#endif - - /* take back the memory occupied by the kernel image and the bootmem alloc map */ - reserve_bootmem(kstart, kend - kstart + bootmap_size, - BOOTMEM_DEFAULT); - - /* reserve the memory occupied by the initial ramdisk */ -#ifdef CONFIG_BLK_DEV_INITRD - if (LOADER_TYPE && INITRD_START) { - if (INITRD_START + INITRD_SIZE <= (low_top_pfn << PAGE_SHIFT)) { - reserve_bootmem(INITRD_START, INITRD_SIZE, - BOOTMEM_DEFAULT); - initrd_start = INITRD_START + PAGE_OFFSET; - initrd_end = initrd_start + INITRD_SIZE; - } - else { - printk(KERN_ERR - "initrd extends beyond end of memory (0x%08lx > 0x%08lx)\n" - "disabling initrd\n", - INITRD_START + INITRD_SIZE, - low_top_pfn << PAGE_SHIFT); - initrd_start = 0; - } - } -#endif - -} /* end setup_linux_memory() */ -#endif - -/*****************************************************************************/ -/* - * set up the memory map for uClinux - */ -#ifndef CONFIG_MMU -static void __init setup_uclinux_memory(void) -{ -#ifdef CONFIG_PROTECT_KERNEL - unsigned long dampr; -#endif - unsigned long kend; - int bootmap_size; - - kend = (unsigned long) &__kernel_image_end; - kend = (kend + PAGE_SIZE - 1) & PAGE_MASK; - - /* give all the memory to the bootmap allocator, tell it to put the - * boot mem_map immediately following the kernel image - */ - bootmap_size = init_bootmem_node(NODE_DATA(0), - kend >> PAGE_SHIFT, /* map addr */ - memory_start >> PAGE_SHIFT, /* start of RAM */ - memory_end >> PAGE_SHIFT /* end of RAM */ - ); - - /* free all the usable memory */ - free_bootmem(memory_start, memory_end - memory_start); - - high_memory = (void *) (memory_end & PAGE_MASK); - max_mapnr = ((unsigned long) high_memory - PAGE_OFFSET) >> PAGE_SHIFT; - - min_low_pfn = memory_start >> PAGE_SHIFT; - max_low_pfn = memory_end >> PAGE_SHIFT; - max_pfn = max_low_pfn; - - /* now take back the bits the core kernel is occupying */ -#ifndef CONFIG_PROTECT_KERNEL - reserve_bootmem(kend, bootmap_size, BOOTMEM_DEFAULT); - reserve_bootmem((unsigned long) &__kernel_image_start, - kend - (unsigned long) &__kernel_image_start, - BOOTMEM_DEFAULT); - -#else - dampr = __get_DAMPR(0); - dampr &= xAMPRx_SS; - dampr = (dampr >> 4) + 17; - dampr = 1 << dampr; - - reserve_bootmem(__get_DAMPR(0) & xAMPRx_PPFN, dampr, BOOTMEM_DEFAULT); -#endif - - /* reserve some memory to do uncached DMA through if requested */ -#ifdef CONFIG_RESERVE_DMA_COHERENT - if (dma_coherent_mem_start) - reserve_bootmem(dma_coherent_mem_start, - dma_coherent_mem_end - dma_coherent_mem_start, - BOOTMEM_DEFAULT); -#endif - -} /* end setup_uclinux_memory() */ -#endif - -/*****************************************************************************/ -/* - * get CPU information for use by procfs - */ -static int show_cpuinfo(struct seq_file *m, void *v) -{ - const char *gr, *fr, *fm, *fp, *cm, *nem, *ble; -#ifdef CONFIG_PM - const char *sep; -#endif - - gr = cpu_hsr0_all & HSR0_GRHE ? "gr0-63" : "gr0-31"; - fr = cpu_hsr0_all & HSR0_FRHE ? "fr0-63" : "fr0-31"; - fm = cpu_psr_all & PSR_EM ? ", Media" : ""; - fp = cpu_psr_all & PSR_EF ? ", FPU" : ""; - cm = cpu_psr_all & PSR_CM ? ", CCCR" : ""; - nem = cpu_psr_all & PSR_NEM ? ", NE" : ""; - ble = cpu_psr_all & PSR_BE ? "BE" : "LE"; - - seq_printf(m, - "CPU-Series:\t%s\n" - "CPU-Core:\t%s, %s, %s%s%s\n" - "CPU:\t\t%s\n" - "MMU:\t\t%s\n" - "FP-Media:\t%s%s%s\n" - "System:\t\t%s", - cpu_series, - cpu_core, gr, ble, cm, nem, - cpu_silicon, - cpu_mmu, - fr, fm, fp, - cpu_system); - - if (cpu_board1) - seq_printf(m, ", %s", cpu_board1); - - if (cpu_board2) - seq_printf(m, ", %s", cpu_board2); - - seq_printf(m, "\n"); - -#ifdef CONFIG_PM - seq_printf(m, "PM-Controls:"); - sep = "\t"; - - if (clock_bits_settable & CLOCK_BIT_CMODE) { - seq_printf(m, "%scmode=0x%04hx", sep, clock_cmodes_permitted); - sep = ", "; - } - - if (clock_bits_settable & CLOCK_BIT_CM) { - seq_printf(m, "%scm=0x%lx", sep, clock_bits_settable & CLOCK_BIT_CM); - sep = ", "; - } - - if (clock_bits_settable & CLOCK_BIT_P0) { - seq_printf(m, "%sp0=0x3", sep); - sep = ", "; - } - - seq_printf(m, "%ssuspend=0x22\n", sep); -#endif - - seq_printf(m, - "PM-Status:\tcmode=%d, cm=%d, p0=%d\n", - clock_cmode_current, clock_cm_current, clock_p0_current); - -#define print_clk(TAG, VAR) \ - seq_printf(m, "Clock-" TAG ":\t%lu.%2.2lu MHz\n", VAR / 1000000, (VAR / 10000) % 100) - - print_clk("In", __clkin_clock_speed_HZ); - print_clk("Core", __core_clock_speed_HZ); - print_clk("SDRAM", __sdram_clock_speed_HZ); - print_clk("CBus", __core_bus_clock_speed_HZ); - print_clk("Res", __res_bus_clock_speed_HZ); - print_clk("Ext", __ext_bus_clock_speed_HZ); - print_clk("DSU", __dsu_clock_speed_HZ); - - seq_printf(m, - "BogoMips:\t%lu.%02lu\n", - (loops_per_jiffy * HZ) / 500000, ((loops_per_jiffy * HZ) / 5000) % 100); - - return 0; -} /* end show_cpuinfo() */ - -static void *c_start(struct seq_file *m, loff_t *pos) -{ - return *pos < NR_CPUS ? (void *) 0x12345678 : NULL; -} - -static void *c_next(struct seq_file *m, void *v, loff_t *pos) -{ - ++*pos; - return c_start(m, pos); -} - -static void c_stop(struct seq_file *m, void *v) -{ -} - -const struct seq_operations cpuinfo_op = { - .start = c_start, - .next = c_next, - .stop = c_stop, - .show = show_cpuinfo, -}; - -void arch_gettod(int *year, int *mon, int *day, int *hour, - int *min, int *sec) -{ - *year = *mon = *day = *hour = *min = *sec = 0; -} - -/*****************************************************************************/ -/* - * - */ -#ifdef CONFIG_MB93090_MB00 -static void __init mb93090_sendlcdcmd(uint32_t cmd) -{ - unsigned long base = __addr_LCD(); - int loop; - - /* request reading of the busy flag */ - __set_LCD(base, LCD_CMD_READ_BUSY); - __set_LCD(base, LCD_CMD_READ_BUSY & ~LCD_E); - - /* wait for the busy flag to become clear */ - for (loop = 10000; loop > 0; loop--) - if (!(__get_LCD(base) & 0x80)) - break; - - /* send the command */ - __set_LCD(base, cmd); - __set_LCD(base, cmd & ~LCD_E); - -} /* end mb93090_sendlcdcmd() */ - -/*****************************************************************************/ -/* - * write to the MB93090 LEDs and LCD - */ -static void __init mb93090_display(void) -{ - const char *p; - - __set_LEDS(0); - - /* set up the LCD */ - mb93090_sendlcdcmd(LCD_CMD_CLEAR); - mb93090_sendlcdcmd(LCD_CMD_FUNCSET(1,1,0)); - mb93090_sendlcdcmd(LCD_CMD_ON(0,0)); - mb93090_sendlcdcmd(LCD_CMD_HOME); - - mb93090_sendlcdcmd(LCD_CMD_SET_DD_ADDR(0)); - for (p = mb93090_banner; *p; p++) - mb93090_sendlcdcmd(LCD_DATA_WRITE(*p)); - - mb93090_sendlcdcmd(LCD_CMD_SET_DD_ADDR(64)); - for (p = mb93090_version; *p; p++) - mb93090_sendlcdcmd(LCD_DATA_WRITE(*p)); - -} /* end mb93090_display() */ - -#endif // CONFIG_MB93090_MB00 diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c deleted file mode 100644 index bf6e07a7a1b1..000000000000 --- a/arch/frv/kernel/signal.c +++ /dev/null @@ -1,426 +0,0 @@ -/* signal.c: FRV specific bits of signal handling - * - * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from arch/m68k/kernel/signal.c - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/errno.h> -#include <linux/wait.h> -#include <linux/ptrace.h> -#include <linux/unistd.h> -#include <linux/personality.h> -#include <linux/tracehook.h> -#include <asm/ucontext.h> -#include <linux/uaccess.h> -#include <asm/cacheflush.h> - -#define DEBUG_SIG 0 - -struct fdpic_func_descriptor { - unsigned long text; - unsigned long GOT; -}; - -/* - * Do a signal return; undo the signal stack. - */ - -struct sigframe -{ - __sigrestore_t pretcode; - int sig; - struct sigcontext sc; - unsigned long extramask[_NSIG_WORDS-1]; - uint32_t retcode[2]; -}; - -struct rt_sigframe -{ - __sigrestore_t pretcode; - int sig; - struct siginfo __user *pinfo; - void __user *puc; - struct siginfo info; - struct ucontext uc; - uint32_t retcode[2]; -}; - -static int restore_sigcontext(struct sigcontext __user *sc, int *_gr8) -{ - struct user_context *user = current->thread.user; - unsigned long tbr, psr; - - /* Always make any pending restarted system calls return -EINTR */ - current->restart_block.fn = do_no_restart_syscall; - - tbr = user->i.tbr; - psr = user->i.psr; - if (copy_from_user(user, &sc->sc_context, sizeof(sc->sc_context))) - goto badframe; - user->i.tbr = tbr; - user->i.psr = psr; - - restore_user_regs(user); - - user->i.syscallno = -1; /* disable syscall checks */ - - *_gr8 = user->i.gr[8]; - return 0; - - badframe: - return 1; -} - -asmlinkage int sys_sigreturn(void) -{ - struct sigframe __user *frame = (struct sigframe __user *) __frame->sp; - sigset_t set; - int gr8; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__get_user(set.sig[0], &frame->sc.sc_oldmask)) - goto badframe; - - if (_NSIG_WORDS > 1 && - __copy_from_user(&set.sig[1], &frame->extramask, sizeof(frame->extramask))) - goto badframe; - - set_current_blocked(&set); - - if (restore_sigcontext(&frame->sc, &gr8)) - goto badframe; - return gr8; - - badframe: - force_sig(SIGSEGV, current); - return 0; -} - -asmlinkage int sys_rt_sigreturn(void) -{ - struct rt_sigframe __user *frame = (struct rt_sigframe __user *) __frame->sp; - sigset_t set; - int gr8; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) - goto badframe; - - set_current_blocked(&set); - - if (restore_sigcontext(&frame->uc.uc_mcontext, &gr8)) - goto badframe; - - if (restore_altstack(&frame->uc.uc_stack)) - goto badframe; - - return gr8; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -/* - * Set up a signal frame - */ -static int setup_sigcontext(struct sigcontext __user *sc, unsigned long mask) -{ - save_user_regs(current->thread.user); - - if (copy_to_user(&sc->sc_context, current->thread.user, sizeof(sc->sc_context)) != 0) - goto badframe; - - /* non-iBCS2 extensions.. */ - if (__put_user(mask, &sc->sc_oldmask) < 0) - goto badframe; - - return 0; - - badframe: - return 1; -} - -/*****************************************************************************/ -/* - * Determine which stack to use.. - */ -static inline void __user *get_sigframe(struct ksignal *ksig, - size_t frame_size) -{ - unsigned long sp = sigsp(__frame->sp, ksig); - - return (void __user *) ((sp - frame_size) & ~7UL); - -} /* end get_sigframe() */ - -/*****************************************************************************/ -/* - * - */ -static int setup_frame(struct ksignal *ksig, sigset_t *set) -{ - struct sigframe __user *frame; - int sig = ksig->sig; - - frame = get_sigframe(ksig, sizeof(*frame)); - - if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - return -EFAULT; - - if (__put_user(sig, &frame->sig) < 0) - return -EFAULT; - - if (setup_sigcontext(&frame->sc, set->sig[0])) - return -EFAULT; - - if (_NSIG_WORDS > 1) { - if (__copy_to_user(frame->extramask, &set->sig[1], - sizeof(frame->extramask))) - return -EFAULT; - } - - /* Set up to return from userspace. If provided, use a stub - * already in userspace. */ - if (ksig->ka.sa.sa_flags & SA_RESTORER) { - if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode) < 0) - return -EFAULT; - } - else { - /* Set up the following code on the stack: - * setlos #__NR_sigreturn,gr7 - * tira gr0,0 - */ - if (__put_user((__sigrestore_t)frame->retcode, &frame->pretcode) || - __put_user(0x8efc0000|__NR_sigreturn, &frame->retcode[0]) || - __put_user(0xc0700000, &frame->retcode[1])) - return -EFAULT; - - flush_icache_range((unsigned long) frame->retcode, - (unsigned long) (frame->retcode + 2)); - } - - /* Set up registers for the signal handler */ - if (current->personality & FDPIC_FUNCPTRS) { - struct fdpic_func_descriptor __user *funcptr = - (struct fdpic_func_descriptor __user *) ksig->ka.sa.sa_handler; - struct fdpic_func_descriptor desc; - if (copy_from_user(&desc, funcptr, sizeof(desc))) - return -EFAULT; - __frame->pc = desc.text; - __frame->gr15 = desc.GOT; - } else { - __frame->pc = (unsigned long) ksig->ka.sa.sa_handler; - __frame->gr15 = 0; - } - - __frame->sp = (unsigned long) frame; - __frame->lr = (unsigned long) &frame->retcode; - __frame->gr8 = sig; - -#if DEBUG_SIG - printk("SIG deliver %d (%s:%d): sp=%p pc=%lx ra=%p\n", - sig, current->comm, current->pid, frame, __frame->pc, - frame->pretcode); -#endif - - return 0; -} /* end setup_frame() */ - -/*****************************************************************************/ -/* - * - */ -static int setup_rt_frame(struct ksignal *ksig, sigset_t *set) -{ - struct rt_sigframe __user *frame; - int sig = ksig->sig; - - frame = get_sigframe(ksig, sizeof(*frame)); - - if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - return -EFAULT; - - if (__put_user(sig, &frame->sig) || - __put_user(&frame->info, &frame->pinfo) || - __put_user(&frame->uc, &frame->puc)) - return -EFAULT; - - if (copy_siginfo_to_user(&frame->info, &ksig->info)) - return -EFAULT; - - /* Create the ucontext. */ - if (__put_user(0, &frame->uc.uc_flags) || - __put_user(NULL, &frame->uc.uc_link) || - __save_altstack(&frame->uc.uc_stack, __frame->sp)) - return -EFAULT; - - if (setup_sigcontext(&frame->uc.uc_mcontext, set->sig[0])) - return -EFAULT; - - if (__copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set))) - return -EFAULT; - - /* Set up to return from userspace. If provided, use a stub - * already in userspace. */ - if (ksig->ka.sa.sa_flags & SA_RESTORER) { - if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode)) - return -EFAULT; - } - else { - /* Set up the following code on the stack: - * setlos #__NR_sigreturn,gr7 - * tira gr0,0 - */ - if (__put_user((__sigrestore_t)frame->retcode, &frame->pretcode) || - __put_user(0x8efc0000|__NR_rt_sigreturn, &frame->retcode[0]) || - __put_user(0xc0700000, &frame->retcode[1])) - return -EFAULT; - - flush_icache_range((unsigned long) frame->retcode, - (unsigned long) (frame->retcode + 2)); - } - - /* Set up registers for signal handler */ - if (current->personality & FDPIC_FUNCPTRS) { - struct fdpic_func_descriptor __user *funcptr = - (struct fdpic_func_descriptor __user *) ksig->ka.sa.sa_handler; - struct fdpic_func_descriptor desc; - if (copy_from_user(&desc, funcptr, sizeof(desc))) - return -EFAULT; - __frame->pc = desc.text; - __frame->gr15 = desc.GOT; - } else { - __frame->pc = (unsigned long) ksig->ka.sa.sa_handler; - __frame->gr15 = 0; - } - - __frame->sp = (unsigned long) frame; - __frame->lr = (unsigned long) &frame->retcode; - __frame->gr8 = sig; - __frame->gr9 = (unsigned long) &frame->info; - -#if DEBUG_SIG - printk("SIG deliver %d (%s:%d): sp=%p pc=%lx ra=%p\n", - sig, current->comm, current->pid, frame, __frame->pc, - frame->pretcode); -#endif - return 0; - -} /* end setup_rt_frame() */ - -/*****************************************************************************/ -/* - * OK, we're invoking a handler - */ -static void handle_signal(struct ksignal *ksig) -{ - sigset_t *oldset = sigmask_to_save(); - int ret; - - /* Are we from a system call? */ - if (__frame->syscallno != -1) { - /* If so, check system call restarting.. */ - switch (__frame->gr8) { - case -ERESTART_RESTARTBLOCK: - case -ERESTARTNOHAND: - __frame->gr8 = -EINTR; - break; - - case -ERESTARTSYS: - if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { - __frame->gr8 = -EINTR; - break; - } - - /* fallthrough */ - case -ERESTARTNOINTR: - __frame->gr8 = __frame->orig_gr8; - __frame->pc -= 4; - } - __frame->syscallno = -1; - } - - /* Set up the stack frame */ - if (ksig->ka.sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(ksig, oldset); - else - ret = setup_frame(ksig, oldset); - - signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); -} /* end handle_signal() */ - -/*****************************************************************************/ -/* - * Note that 'init' is a special process: it doesn't get signals it doesn't - * want to handle. Thus you cannot kill init even with a SIGKILL even by - * mistake. - */ -static void do_signal(void) -{ - struct ksignal ksig; - - if (get_signal(&ksig)) { - handle_signal(&ksig); - return; - } - - /* Did we come from a system call? */ - if (__frame->syscallno != -1) { - /* Restart the system call - no handlers present */ - switch (__frame->gr8) { - case -ERESTARTNOHAND: - case -ERESTARTSYS: - case -ERESTARTNOINTR: - __frame->gr8 = __frame->orig_gr8; - __frame->pc -= 4; - break; - - case -ERESTART_RESTARTBLOCK: - __frame->gr7 = __NR_restart_syscall; - __frame->pc -= 4; - break; - } - __frame->syscallno = -1; - } - - /* if there's no signal to deliver, we just put the saved sigmask - * back */ - restore_saved_sigmask(); -} /* end do_signal() */ - -/*****************************************************************************/ -/* - * notification of userspace execution resumption - * - triggered by the TIF_WORK_MASK flags - */ -asmlinkage void do_notify_resume(__u32 thread_info_flags) -{ - /* pending single-step? */ - if (thread_info_flags & _TIF_SINGLESTEP) - clear_thread_flag(TIF_SINGLESTEP); - - /* deal with pending signal delivery */ - if (thread_info_flags & _TIF_SIGPENDING) - do_signal(); - - /* deal with notification on about to resume userspace execution */ - if (thread_info_flags & _TIF_NOTIFY_RESUME) { - clear_thread_flag(TIF_NOTIFY_RESUME); - tracehook_notify_resume(__frame); - } - -} /* end do_notify_resume() */ diff --git a/arch/frv/kernel/sleep.S b/arch/frv/kernel/sleep.S deleted file mode 100644 index f67bf73cd2cc..000000000000 --- a/arch/frv/kernel/sleep.S +++ /dev/null @@ -1,373 +0,0 @@ -/* sleep.S: power saving mode entry - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Woodhouse (dwmw2@infradead.org) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include <linux/sys.h> -#include <linux/linkage.h> -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/page.h> -#include <asm/ptrace.h> -#include <asm/errno.h> -#include <asm/cache.h> -#include <asm/spr-regs.h> - -#define __addr_MASK 0xfeff9820 /* interrupt controller mask */ - -#define __addr_FR55X_DRCN 0xfeff0218 /* Address of DRCN register */ -#define FR55X_DSTS_OFFSET -4 /* Offset from DRCN to DSTS */ -#define FR55X_SDRAMC_DSTS_SSI 0x00000002 /* indicates that the SDRAM is in self-refresh mode */ - -#define __addr_FR4XX_DRCN 0xfe000430 /* Address of DRCN register */ -#define FR4XX_DSTS_OFFSET -8 /* Offset from DRCN to DSTS */ -#define FR4XX_SDRAMC_DSTS_SSI 0x00000001 /* indicates that the SDRAM is in self-refresh mode */ - -#define SDRAMC_DRCN_SR 0x00000001 /* transition SDRAM into self-refresh mode */ - - .section .bss - .balign 8 - .globl __sleep_save_area -__sleep_save_area: - .space 16 - - - .text - .balign 4 - -.macro li v r - sethi.p %hi(\v),\r - setlo %lo(\v),\r -.endm - -#ifdef CONFIG_PM -############################################################################### -# -# CPU suspension routine -# - void frv_cpu_suspend(unsigned long pdm_mode) -# -############################################################################### - .globl frv_cpu_suspend - .type frv_cpu_suspend,@function -frv_cpu_suspend: - - #---------------------------------------------------- - # save hsr0, psr, isr, and lr for resume code - #---------------------------------------------------- - li __sleep_save_area,gr11 - - movsg hsr0,gr4 - movsg psr,gr5 - movsg isr,gr6 - movsg lr,gr7 - stdi gr4,@(gr11,#0) - stdi gr6,@(gr11,#8) - - # store the return address from sleep in GR14, and its complement in GR13 as a check - li __ramboot_resume,gr14 -#ifdef CONFIG_MMU - # Resume via RAMBOOT# will turn MMU off, so bootloader needs a physical address. - sethi.p %hi(__page_offset),gr13 - setlo %lo(__page_offset),gr13 - sub gr14,gr13,gr14 -#endif - not gr14,gr13 - - #---------------------------------------------------- - # preload and lock into icache that code which may have to run - # when dram is in self-refresh state. - #---------------------------------------------------- - movsg hsr0, gr3 - li HSR0_ICE,gr4 - or gr3,gr4,gr3 - movgs gr3,hsr0 - or gr3,gr8,gr7 // add the sleep bits for later - - li #__icache_lock_start,gr3 - li #__icache_lock_end,gr4 -1: icpl gr3,gr0,#1 - addi gr3,#L1_CACHE_BYTES,gr3 - cmp gr4,gr3,icc0 - bhi icc0,#0,1b - - # disable exceptions - movsg psr,gr8 - andi.p gr8,#~PSR_PIL,gr8 - andi gr8,~PSR_ET,gr8 - movgs gr8,psr - ori gr8,#PSR_ET,gr8 - - srli gr8,#28,gr4 - subicc gr4,#3,gr0,icc0 - beq icc0,#0,1f - # FR4xx - li __addr_FR4XX_DRCN,gr4 - li FR4XX_SDRAMC_DSTS_SSI,gr5 - li FR4XX_DSTS_OFFSET,gr6 - bra __icache_lock_start -1: - # FR5xx - li __addr_FR55X_DRCN,gr4 - li FR55X_SDRAMC_DSTS_SSI,gr5 - li FR55X_DSTS_OFFSET,gr6 - bra __icache_lock_start - - .size frv_cpu_suspend, .-frv_cpu_suspend - -# -# the final part of the sleep sequence... -# - we want it to be be cacheline aligned so we can lock it into the icache easily -# On entry: gr7 holds desired hsr0 sleep value -# gr8 holds desired psr sleep value -# - .balign L1_CACHE_BYTES - .type __icache_lock_start,@function -__icache_lock_start: - - #---------------------------------------------------- - # put SDRAM in self-refresh mode - #---------------------------------------------------- - - # Flush all data in the cache using the DCEF instruction. - dcef @(gr0,gr0),#1 - - # Stop DMAC transfer - - # Execute dummy load from SDRAM - ldi @(gr11,#0),gr11 - - # put the SDRAM into self-refresh mode - ld @(gr4,gr0),gr11 - ori gr11,#SDRAMC_DRCN_SR,gr11 - st gr11,@(gr4,gr0) - membar - - # wait for SDRAM to reach self-refresh mode -1: ld @(gr4,gr6),gr11 - andcc gr11,gr5,gr11,icc0 - beq icc0,#0,1b - - # Set the GPIO register so that the IRQ[3:0] pins become valid, as required. - # Set the clock mode (CLKC register) as required. - # - At this time, also set the CLKC register P0 bit. - - # Set the HSR0 register PDM field. - movgs gr7,hsr0 - - # Execute NOP 32 times. - .rept 32 - nop - .endr - -#if 0 // Fujitsu recommend to skip this and will update docs. - # Release the interrupt mask setting of the MASK register of the - # interrupt controller if necessary. - sti gr10,@(gr9,#0) - membar -#endif - - # Set the PSR register ET bit to 1 to enable interrupts. - movgs gr8,psr - - ################################################### - # this is only reached if waking up via interrupt - ################################################### - - # Execute NOP 32 times. - .rept 32 - nop - .endr - - #---------------------------------------------------- - # wake SDRAM from self-refresh mode - #---------------------------------------------------- - ld @(gr4,gr0),gr11 - andi gr11,#~SDRAMC_DRCN_SR,gr11 - st gr11,@(gr4,gr0) - membar -2: - ld @(gr4,gr6),gr11 // Wait for it to come back... - andcc gr11,gr5,gr0,icc0 - bne icc0,0,2b - - # wait for the SDRAM to stabilise - li 0x0100000,gr3 -3: subicc gr3,#1,gr3,icc0 - bne icc0,#0,3b - - # now that DRAM is back, this is the end of the code which gets - # locked in icache. -__icache_lock_end: - .size __icache_lock_start, .-__icache_lock_start - - # Fall-through to the RAMBOOT# wakeup path - -############################################################################### -# -# resume from suspend re-entry point reached via RAMBOOT# and bootloader -# -############################################################################### -__ramboot_resume: - - #---------------------------------------------------- - # restore hsr0, psr, isr, and leave saved lr in gr7 - #---------------------------------------------------- - li __sleep_save_area,gr11 -#ifdef CONFIG_MMU - movsg hsr0,gr4 - sethi.p %hi(HSR0_EXMMU),gr3 - setlo %lo(HSR0_EXMMU),gr3 - andcc gr3,gr4,gr0,icc0 - bne icc0,#0,2f - - # need to use physical address - sethi.p %hi(__page_offset),gr3 - setlo %lo(__page_offset),gr3 - sub gr11,gr3,gr11 - - # flush all tlb entries - setlos #64,gr4 - setlos.p #PAGE_SIZE,gr5 - setlos #0,gr6 -1: - tlbpr gr6,gr0,#6,#0 - subicc.p gr4,#1,gr4,icc0 - add gr6,gr5,gr6 - bne icc0,#2,1b - - # need a temporary mapping for the current physical address we are - # using between time MMU is enabled and jump to virtual address is - # made. - sethi.p %hi(0x00000000),gr4 - setlo %lo(0x00000000),gr4 ; physical address - setlos #xAMPRx_L|xAMPRx_M|xAMPRx_SS_256Mb|xAMPRx_S_KERNEL|xAMPRx_V,gr5 - or gr4,gr5,gr5 - - movsg cxnr,gr13 - or gr4,gr13,gr4 - - movgs gr4,iamlr1 ; mapped from real address 0 - movgs gr5,iampr1 ; cached kernel memory at 0x00000000 -2: -#endif - - lddi @(gr11,#0),gr4 ; hsr0, psr - lddi @(gr11,#8),gr6 ; isr, lr - movgs gr4,hsr0 - bar - -#ifdef CONFIG_MMU - sethi.p %hi(1f),gr11 - setlo %lo(1f),gr11 - jmpl @(gr11,gr0) -1: - movgs gr0,iampr1 ; get rid of temporary mapping -#endif - movgs gr5,psr - movgs gr6,isr - - #---------------------------------------------------- - # unlock the icache which was locked before going to sleep - #---------------------------------------------------- - li __icache_lock_start,gr3 - li __icache_lock_end,gr4 -1: icul gr3 - addi gr3,#L1_CACHE_BYTES,gr3 - cmp gr4,gr3,icc0 - bhi icc0,#0,1b - - #---------------------------------------------------- - # back to business as usual - #---------------------------------------------------- - jmpl @(gr7,gr0) ; - -#endif /* CONFIG_PM */ - -############################################################################### -# -# CPU core sleep mode routine -# -############################################################################### - .globl frv_cpu_core_sleep - .type frv_cpu_core_sleep,@function -frv_cpu_core_sleep: - - # Preload into icache. - li #__core_sleep_icache_lock_start,gr3 - li #__core_sleep_icache_lock_end,gr4 - -1: icpl gr3,gr0,#1 - addi gr3,#L1_CACHE_BYTES,gr3 - cmp gr4,gr3,icc0 - bhi icc0,#0,1b - - bra __core_sleep_icache_lock_start - - .balign L1_CACHE_BYTES -__core_sleep_icache_lock_start: - - # (1) Set the PSR register ET bit to 0 to disable interrupts. - movsg psr,gr8 - andi.p gr8,#~(PSR_PIL),gr8 - andi gr8,#~(PSR_ET),gr4 - movgs gr4,psr - -#if 0 // Fujitsu recommend to skip this and will update docs. - # (2) Set '1' to all bits in the MASK register of the interrupt - # controller and mask interrupts. - sethi.p %hi(__addr_MASK),gr9 - setlo %lo(__addr_MASK),gr9 - sethi.p %hi(0xffff0000),gr4 - setlo %lo(0xffff0000),gr4 - ldi @(gr9,#0),gr10 - sti gr4,@(gr9,#0) -#endif - # (3) Flush all data in the cache using the DCEF instruction. - dcef @(gr0,gr0),#1 - - # (4) Execute the memory barrier instruction - membar - - # (5) Set the GPIO register so that the IRQ[3:0] pins become valid, as required. - # (6) Set the clock mode (CLKC register) as required. - # - At this time, also set the CLKC register P0 bit. - # (7) Set the HSR0 register PDM field to 001 . - movsg hsr0,gr4 - ori gr4,HSR0_PDM_CORE_SLEEP,gr4 - movgs gr4,hsr0 - - # (8) Execute NOP 32 times. - .rept 32 - nop - .endr - -#if 0 // Fujitsu recommend to skip this and will update docs. - # (9) Release the interrupt mask setting of the MASK register of the - # interrupt controller if necessary. - sti gr10,@(gr9,#0) - membar -#endif - - # (10) Set the PSR register ET bit to 1 to enable interrupts. - movgs gr8,psr - -__core_sleep_icache_lock_end: - - # Unlock from icache - li __core_sleep_icache_lock_start,gr3 - li __core_sleep_icache_lock_end,gr4 -1: icul gr3 - addi gr3,#L1_CACHE_BYTES,gr3 - cmp gr4,gr3,icc0 - bhi icc0,#0,1b - - bralr - - .size frv_cpu_core_sleep, .-frv_cpu_core_sleep diff --git a/arch/frv/kernel/switch_to.S b/arch/frv/kernel/switch_to.S deleted file mode 100644 index b06668670fcc..000000000000 --- a/arch/frv/kernel/switch_to.S +++ /dev/null @@ -1,489 +0,0 @@ -############################################################################### -# -# switch_to.S: context switch operation -# -# Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. -# Written by David Howells (dhowells@redhat.com) -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public License -# as published by the Free Software Foundation; either version -# 2 of the License, or (at your option) any later version. -# -############################################################################### - -#include <linux/linkage.h> -#include <asm/thread_info.h> -#include <asm/processor.h> -#include <asm/registers.h> -#include <asm/spr-regs.h> - -.macro LEDS val - setlos #~\val,gr27 - st gr27,@(gr30,gr0) - membar - dcf @(gr30,gr0) -.endm - - .section .sdata - .balign 8 - - # address of frame 0 (userspace) on current kernel stack - .globl __kernel_frame0_ptr -__kernel_frame0_ptr: - .long init_thread_union + THREAD_SIZE - FRV_FRAME0_SIZE - - # address of current task - .globl __kernel_current_task -__kernel_current_task: - .long init_task - - .section .text - .balign 4 - -############################################################################### -# -# struct task_struct *__switch_to(struct thread_struct *prev_thread, -# struct thread_struct *next_thread, -# struct task_struct *prev) -# -############################################################################### - .globl __switch_to -__switch_to: - # save outgoing process's context - sethi.p %hi(__switch_back),gr13 - setlo %lo(__switch_back),gr13 - movsg lr,gr12 - - stdi gr28,@(gr8,#__THREAD_FRAME) - sti sp ,@(gr8,#__THREAD_SP) - sti fp ,@(gr8,#__THREAD_FP) - stdi gr12,@(gr8,#__THREAD_LR) - stdi gr16,@(gr8,#__THREAD_GR(16)) - stdi gr18,@(gr8,#__THREAD_GR(18)) - stdi gr20,@(gr8,#__THREAD_GR(20)) - stdi gr22,@(gr8,#__THREAD_GR(22)) - stdi gr24,@(gr8,#__THREAD_GR(24)) - stdi.p gr26,@(gr8,#__THREAD_GR(26)) - - or gr8,gr8,gr22 - ldi.p @(gr8,#__THREAD_USER),gr8 - call save_user_regs - or gr22,gr22,gr8 - - # retrieve the new context - sethi.p %hi(__kernel_frame0_ptr),gr6 - setlo %lo(__kernel_frame0_ptr),gr6 - movsg psr,gr4 - - lddi.p @(gr9,#__THREAD_FRAME),gr10 - or gr10,gr10,gr27 ; save prev for the return value - - ldi @(gr11,#4),gr19 ; get new_current->thread_info - - lddi @(gr9,#__THREAD_SP),gr12 - ldi @(gr9,#__THREAD_LR),gr14 - ldi @(gr9,#__THREAD_PC),gr18 - ldi.p @(gr9,#__THREAD_FRAME0),gr7 - - # actually switch kernel contexts with ordinary exceptions disabled - andi gr4,#~PSR_ET,gr5 - movgs gr5,psr - - or.p gr10,gr0,gr28 ; set __frame - or gr11,gr0,gr29 ; set __current - or.p gr12,gr0,sp - or gr13,gr0,fp - or gr19,gr0,gr15 ; set __current_thread_info - - sti gr7,@(gr6,#0) ; set __kernel_frame0_ptr - sti gr29,@(gr6,#4) ; set __kernel_current_task - - movgs gr14,lr - bar - - # jump to __switch_back or ret_from_fork as appropriate - # - move prev to GR8 - movgs gr4,psr - jmpl.p @(gr18,gr0) - or gr27,gr27,gr8 - -############################################################################### -# -# restore incoming process's context -# - on entry: -# - SP, FP, LR, GR15, GR28 and GR29 will have been set up appropriately -# - GR8 will point to the outgoing task_struct -# - GR9 will point to the incoming thread_struct -# -############################################################################### -__switch_back: - lddi @(gr9,#__THREAD_GR(16)),gr16 - lddi @(gr9,#__THREAD_GR(18)),gr18 - lddi @(gr9,#__THREAD_GR(20)),gr20 - lddi @(gr9,#__THREAD_GR(22)),gr22 - lddi @(gr9,#__THREAD_GR(24)),gr24 - lddi @(gr9,#__THREAD_GR(26)),gr26 - - # fall through into restore_user_regs() - ldi.p @(gr9,#__THREAD_USER),gr8 - or gr8,gr8,gr9 - -############################################################################### -# -# restore extra general regs and FP/Media regs -# - void *restore_user_regs(const struct user_context *target, void *retval) -# - on entry: -# - GR8 will point to the user context to swap in -# - GR9 will contain the value to be returned in GR8 (prev task on context switch) -# -############################################################################### - .globl restore_user_regs -restore_user_regs: - movsg hsr0,gr6 - ori gr6,#HSR0_GRHE|HSR0_FRLE|HSR0_FRHE,gr6 - movgs gr6,hsr0 - movsg hsr0,gr6 - - movsg psr,gr7 - ori gr7,#PSR_EF|PSR_EM,gr7 - movgs gr7,psr - movsg psr,gr7 - srli gr7,#24,gr7 - bar - - lddi @(gr8,#__FPMEDIA_MSR(0)),gr4 - - movgs gr4,msr0 - movgs gr5,msr1 - - lddfi @(gr8,#__FPMEDIA_ACC(0)),fr16 - lddfi @(gr8,#__FPMEDIA_ACC(2)),fr18 - ldbfi @(gr8,#__FPMEDIA_ACCG(0)),fr20 - ldbfi @(gr8,#__FPMEDIA_ACCG(1)),fr21 - ldbfi @(gr8,#__FPMEDIA_ACCG(2)),fr22 - ldbfi @(gr8,#__FPMEDIA_ACCG(3)),fr23 - - mwtacc fr16,acc0 - mwtacc fr17,acc1 - mwtacc fr18,acc2 - mwtacc fr19,acc3 - mwtaccg fr20,accg0 - mwtaccg fr21,accg1 - mwtaccg fr22,accg2 - mwtaccg fr23,accg3 - - # some CPUs have extra ACCx and ACCGx regs and maybe FSRx regs - subicc.p gr7,#0x50,gr0,icc0 - subicc gr7,#0x31,gr0,icc1 - beq icc0,#0,__restore_acc_fr451 - beq icc1,#0,__restore_acc_fr555 -__restore_acc_cont: - - # some CPU's have GR32-GR63 - setlos #HSR0_FRHE,gr4 - andcc gr6,gr4,gr0,icc0 - beq icc0,#1,__restore_skip_gr32_gr63 - - lddi @(gr8,#__INT_GR(32)),gr32 - lddi @(gr8,#__INT_GR(34)),gr34 - lddi @(gr8,#__INT_GR(36)),gr36 - lddi @(gr8,#__INT_GR(38)),gr38 - lddi @(gr8,#__INT_GR(40)),gr40 - lddi @(gr8,#__INT_GR(42)),gr42 - lddi @(gr8,#__INT_GR(44)),gr44 - lddi @(gr8,#__INT_GR(46)),gr46 - lddi @(gr8,#__INT_GR(48)),gr48 - lddi @(gr8,#__INT_GR(50)),gr50 - lddi @(gr8,#__INT_GR(52)),gr52 - lddi @(gr8,#__INT_GR(54)),gr54 - lddi @(gr8,#__INT_GR(56)),gr56 - lddi @(gr8,#__INT_GR(58)),gr58 - lddi @(gr8,#__INT_GR(60)),gr60 - lddi @(gr8,#__INT_GR(62)),gr62 -__restore_skip_gr32_gr63: - - # all CPU's have FR0-FR31 - lddfi @(gr8,#__FPMEDIA_FR( 0)),fr0 - lddfi @(gr8,#__FPMEDIA_FR( 2)),fr2 - lddfi @(gr8,#__FPMEDIA_FR( 4)),fr4 - lddfi @(gr8,#__FPMEDIA_FR( 6)),fr6 - lddfi @(gr8,#__FPMEDIA_FR( 8)),fr8 - lddfi @(gr8,#__FPMEDIA_FR(10)),fr10 - lddfi @(gr8,#__FPMEDIA_FR(12)),fr12 - lddfi @(gr8,#__FPMEDIA_FR(14)),fr14 - lddfi @(gr8,#__FPMEDIA_FR(16)),fr16 - lddfi @(gr8,#__FPMEDIA_FR(18)),fr18 - lddfi @(gr8,#__FPMEDIA_FR(20)),fr20 - lddfi @(gr8,#__FPMEDIA_FR(22)),fr22 - lddfi @(gr8,#__FPMEDIA_FR(24)),fr24 - lddfi @(gr8,#__FPMEDIA_FR(26)),fr26 - lddfi @(gr8,#__FPMEDIA_FR(28)),fr28 - lddfi.p @(gr8,#__FPMEDIA_FR(30)),fr30 - - # some CPU's have FR32-FR63 - setlos #HSR0_FRHE,gr4 - andcc gr6,gr4,gr0,icc0 - beq icc0,#1,__restore_skip_fr32_fr63 - - lddfi @(gr8,#__FPMEDIA_FR(32)),fr32 - lddfi @(gr8,#__FPMEDIA_FR(34)),fr34 - lddfi @(gr8,#__FPMEDIA_FR(36)),fr36 - lddfi @(gr8,#__FPMEDIA_FR(38)),fr38 - lddfi @(gr8,#__FPMEDIA_FR(40)),fr40 - lddfi @(gr8,#__FPMEDIA_FR(42)),fr42 - lddfi @(gr8,#__FPMEDIA_FR(44)),fr44 - lddfi @(gr8,#__FPMEDIA_FR(46)),fr46 - lddfi @(gr8,#__FPMEDIA_FR(48)),fr48 - lddfi @(gr8,#__FPMEDIA_FR(50)),fr50 - lddfi @(gr8,#__FPMEDIA_FR(52)),fr52 - lddfi @(gr8,#__FPMEDIA_FR(54)),fr54 - lddfi @(gr8,#__FPMEDIA_FR(56)),fr56 - lddfi @(gr8,#__FPMEDIA_FR(58)),fr58 - lddfi @(gr8,#__FPMEDIA_FR(60)),fr60 - lddfi @(gr8,#__FPMEDIA_FR(62)),fr62 -__restore_skip_fr32_fr63: - - lddi @(gr8,#__FPMEDIA_FNER(0)),gr4 - movsg fner0,gr4 - movsg fner1,gr5 - or.p gr9,gr9,gr8 - bralr - - # the FR451 also has ACC8-11/ACCG8-11 regs (but not 4-7...) -__restore_acc_fr451: - lddfi @(gr8,#__FPMEDIA_ACC(4)),fr16 - lddfi @(gr8,#__FPMEDIA_ACC(6)),fr18 - ldbfi @(gr8,#__FPMEDIA_ACCG(4)),fr20 - ldbfi @(gr8,#__FPMEDIA_ACCG(5)),fr21 - ldbfi @(gr8,#__FPMEDIA_ACCG(6)),fr22 - ldbfi @(gr8,#__FPMEDIA_ACCG(7)),fr23 - - mwtacc fr16,acc8 - mwtacc fr17,acc9 - mwtacc fr18,acc10 - mwtacc fr19,acc11 - mwtaccg fr20,accg8 - mwtaccg fr21,accg9 - mwtaccg fr22,accg10 - mwtaccg fr23,accg11 - bra __restore_acc_cont - - # the FR555 also has ACC4-7/ACCG4-7 regs and an FSR0 reg -__restore_acc_fr555: - lddfi @(gr8,#__FPMEDIA_ACC(4)),fr16 - lddfi @(gr8,#__FPMEDIA_ACC(6)),fr18 - ldbfi @(gr8,#__FPMEDIA_ACCG(4)),fr20 - ldbfi @(gr8,#__FPMEDIA_ACCG(5)),fr21 - ldbfi @(gr8,#__FPMEDIA_ACCG(6)),fr22 - ldbfi @(gr8,#__FPMEDIA_ACCG(7)),fr23 - - mnop.p - mwtacc fr16,acc4 - mnop.p - mwtacc fr17,acc5 - mnop.p - mwtacc fr18,acc6 - mnop.p - mwtacc fr19,acc7 - mnop.p - mwtaccg fr20,accg4 - mnop.p - mwtaccg fr21,accg5 - mnop.p - mwtaccg fr22,accg6 - mnop.p - mwtaccg fr23,accg7 - - ldi @(gr8,#__FPMEDIA_FSR(0)),gr4 - movgs gr4,fsr0 - - bra __restore_acc_cont - - -############################################################################### -# -# save extra general regs and FP/Media regs -# - void save_user_regs(struct user_context *target) -# -############################################################################### - .globl save_user_regs -save_user_regs: - movsg hsr0,gr6 - ori gr6,#HSR0_GRHE|HSR0_FRLE|HSR0_FRHE,gr6 - movgs gr6,hsr0 - movsg hsr0,gr6 - - movsg psr,gr7 - ori gr7,#PSR_EF|PSR_EM,gr7 - movgs gr7,psr - movsg psr,gr7 - srli gr7,#24,gr7 - bar - - movsg fner0,gr4 - movsg fner1,gr5 - stdi.p gr4,@(gr8,#__FPMEDIA_FNER(0)) - - # some CPU's have GR32-GR63 - setlos #HSR0_GRHE,gr4 - andcc gr6,gr4,gr0,icc0 - beq icc0,#1,__save_skip_gr32_gr63 - - stdi gr32,@(gr8,#__INT_GR(32)) - stdi gr34,@(gr8,#__INT_GR(34)) - stdi gr36,@(gr8,#__INT_GR(36)) - stdi gr38,@(gr8,#__INT_GR(38)) - stdi gr40,@(gr8,#__INT_GR(40)) - stdi gr42,@(gr8,#__INT_GR(42)) - stdi gr44,@(gr8,#__INT_GR(44)) - stdi gr46,@(gr8,#__INT_GR(46)) - stdi gr48,@(gr8,#__INT_GR(48)) - stdi gr50,@(gr8,#__INT_GR(50)) - stdi gr52,@(gr8,#__INT_GR(52)) - stdi gr54,@(gr8,#__INT_GR(54)) - stdi gr56,@(gr8,#__INT_GR(56)) - stdi gr58,@(gr8,#__INT_GR(58)) - stdi gr60,@(gr8,#__INT_GR(60)) - stdi gr62,@(gr8,#__INT_GR(62)) -__save_skip_gr32_gr63: - - # all CPU's have FR0-FR31 - stdfi fr0 ,@(gr8,#__FPMEDIA_FR( 0)) - stdfi fr2 ,@(gr8,#__FPMEDIA_FR( 2)) - stdfi fr4 ,@(gr8,#__FPMEDIA_FR( 4)) - stdfi fr6 ,@(gr8,#__FPMEDIA_FR( 6)) - stdfi fr8 ,@(gr8,#__FPMEDIA_FR( 8)) - stdfi fr10,@(gr8,#__FPMEDIA_FR(10)) - stdfi fr12,@(gr8,#__FPMEDIA_FR(12)) - stdfi fr14,@(gr8,#__FPMEDIA_FR(14)) - stdfi fr16,@(gr8,#__FPMEDIA_FR(16)) - stdfi fr18,@(gr8,#__FPMEDIA_FR(18)) - stdfi fr20,@(gr8,#__FPMEDIA_FR(20)) - stdfi fr22,@(gr8,#__FPMEDIA_FR(22)) - stdfi fr24,@(gr8,#__FPMEDIA_FR(24)) - stdfi fr26,@(gr8,#__FPMEDIA_FR(26)) - stdfi fr28,@(gr8,#__FPMEDIA_FR(28)) - stdfi.p fr30,@(gr8,#__FPMEDIA_FR(30)) - - # some CPU's have FR32-FR63 - setlos #HSR0_FRHE,gr4 - andcc gr6,gr4,gr0,icc0 - beq icc0,#1,__save_skip_fr32_fr63 - - stdfi fr32,@(gr8,#__FPMEDIA_FR(32)) - stdfi fr34,@(gr8,#__FPMEDIA_FR(34)) - stdfi fr36,@(gr8,#__FPMEDIA_FR(36)) - stdfi fr38,@(gr8,#__FPMEDIA_FR(38)) - stdfi fr40,@(gr8,#__FPMEDIA_FR(40)) - stdfi fr42,@(gr8,#__FPMEDIA_FR(42)) - stdfi fr44,@(gr8,#__FPMEDIA_FR(44)) - stdfi fr46,@(gr8,#__FPMEDIA_FR(46)) - stdfi fr48,@(gr8,#__FPMEDIA_FR(48)) - stdfi fr50,@(gr8,#__FPMEDIA_FR(50)) - stdfi fr52,@(gr8,#__FPMEDIA_FR(52)) - stdfi fr54,@(gr8,#__FPMEDIA_FR(54)) - stdfi fr56,@(gr8,#__FPMEDIA_FR(56)) - stdfi fr58,@(gr8,#__FPMEDIA_FR(58)) - stdfi fr60,@(gr8,#__FPMEDIA_FR(60)) - stdfi fr62,@(gr8,#__FPMEDIA_FR(62)) -__save_skip_fr32_fr63: - - mrdacc acc0 ,fr4 - mrdacc acc1 ,fr5 - - stdfi.p fr4 ,@(gr8,#__FPMEDIA_ACC(0)) - - mrdacc acc2 ,fr6 - mrdacc acc3 ,fr7 - - stdfi.p fr6 ,@(gr8,#__FPMEDIA_ACC(2)) - - mrdaccg accg0,fr4 - stbfi.p fr4 ,@(gr8,#__FPMEDIA_ACCG(0)) - - mrdaccg accg1,fr5 - stbfi.p fr5 ,@(gr8,#__FPMEDIA_ACCG(1)) - - mrdaccg accg2,fr6 - stbfi.p fr6 ,@(gr8,#__FPMEDIA_ACCG(2)) - - mrdaccg accg3,fr7 - stbfi fr7 ,@(gr8,#__FPMEDIA_ACCG(3)) - - movsg msr0 ,gr4 - movsg msr1 ,gr5 - - stdi gr4 ,@(gr8,#__FPMEDIA_MSR(0)) - - # some CPUs have extra ACCx and ACCGx regs and maybe FSRx regs - subicc.p gr7,#0x50,gr0,icc0 - subicc gr7,#0x31,gr0,icc1 - beq icc0,#0,__save_acc_fr451 - beq icc1,#0,__save_acc_fr555 -__save_acc_cont: - - lddfi @(gr8,#__FPMEDIA_FR(4)),fr4 - lddfi.p @(gr8,#__FPMEDIA_FR(6)),fr6 - bralr - - # the FR451 also has ACC8-11/ACCG8-11 regs (but not 4-7...) -__save_acc_fr451: - mrdacc acc8 ,fr4 - mrdacc acc9 ,fr5 - - stdfi.p fr4 ,@(gr8,#__FPMEDIA_ACC(4)) - - mrdacc acc10,fr6 - mrdacc acc11,fr7 - - stdfi.p fr6 ,@(gr8,#__FPMEDIA_ACC(6)) - - mrdaccg accg8,fr4 - stbfi.p fr4 ,@(gr8,#__FPMEDIA_ACCG(4)) - - mrdaccg accg9,fr5 - stbfi.p fr5 ,@(gr8,#__FPMEDIA_ACCG(5)) - - mrdaccg accg10,fr6 - stbfi.p fr6 ,@(gr8,#__FPMEDIA_ACCG(6)) - - mrdaccg accg11,fr7 - stbfi fr7 ,@(gr8,#__FPMEDIA_ACCG(7)) - bra __save_acc_cont - - # the FR555 also has ACC4-7/ACCG4-7 regs and an FSR0 reg -__save_acc_fr555: - mnop.p - mrdacc acc4 ,fr4 - mnop.p - mrdacc acc5 ,fr5 - - stdfi fr4 ,@(gr8,#__FPMEDIA_ACC(4)) - - mnop.p - mrdacc acc6 ,fr6 - mnop.p - mrdacc acc7 ,fr7 - - stdfi fr6 ,@(gr8,#__FPMEDIA_ACC(6)) - - mnop.p - mrdaccg accg4,fr4 - stbfi fr4 ,@(gr8,#__FPMEDIA_ACCG(4)) - - mnop.p - mrdaccg accg5,fr5 - stbfi fr5 ,@(gr8,#__FPMEDIA_ACCG(5)) - - mnop.p - mrdaccg accg6,fr6 - stbfi fr6 ,@(gr8,#__FPMEDIA_ACCG(6)) - - mnop.p - mrdaccg accg7,fr7 - stbfi fr7 ,@(gr8,#__FPMEDIA_ACCG(7)) - - movsg fsr0 ,gr4 - sti gr4 ,@(gr8,#__FPMEDIA_FSR(0)) - bra __save_acc_cont diff --git a/arch/frv/kernel/sys_frv.c b/arch/frv/kernel/sys_frv.c deleted file mode 100644 index f80cc8b9bd45..000000000000 --- a/arch/frv/kernel/sys_frv.c +++ /dev/null @@ -1,44 +0,0 @@ -/* sys_frv.c: FRV arch-specific syscall wrappers - * - * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from arch/m68k/kernel/sys_m68k.c - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/fs.h> -#include <linux/smp.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/mman.h> -#include <linux/file.h> -#include <linux/syscalls.h> -#include <linux/ipc.h> - -#include <asm/setup.h> -#include <linux/uaccess.h> - -asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - /* As with sparc32, make sure the shift for mmap2 is constant - (12), no matter what PAGE_SIZE we have.... */ - - /* But unlike sparc32, don't just silently break if we're - trying to map something we can't */ - if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1)) - return -EINVAL; - - return sys_mmap_pgoff(addr, len, prot, flags, fd, - pgoff >> (PAGE_SHIFT - 12)); -} diff --git a/arch/frv/kernel/sysctl.c b/arch/frv/kernel/sysctl.c deleted file mode 100644 index b54a64971cf1..000000000000 --- a/arch/frv/kernel/sysctl.c +++ /dev/null @@ -1,221 +0,0 @@ -/* sysctl.c: implementation of /proc/sys files relating to FRV specifically - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/sysctl.h> -#include <linux/proc_fs.h> -#include <linux/init.h> -#include <linux/uaccess.h> - -static const char frv_cache_wback[] = "wback"; -static const char frv_cache_wthru[] = "wthru"; - -static void frv_change_dcache_mode(unsigned long newmode) -{ - unsigned long flags, hsr0; - - local_irq_save(flags); - - hsr0 = __get_HSR(0); - hsr0 &= ~HSR0_DCE; - __set_HSR(0, hsr0); - - asm volatile(" dcef @(gr0,gr0),#1 \n" - " membar \n" - : : : "memory" - ); - - hsr0 = (hsr0 & ~HSR0_CBM) | newmode; - __set_HSR(0, hsr0); - hsr0 |= HSR0_DCE; - __set_HSR(0, hsr0); - - local_irq_restore(flags); - - //printk("HSR0 now %08lx\n", hsr0); -} - -/*****************************************************************************/ -/* - * handle requests to dynamically switch the write caching mode delivered by /proc - */ -static int procctl_frv_cachemode(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) -{ - unsigned long hsr0; - char buff[8]; - int len; - - len = *lenp; - - if (write) { - /* potential state change */ - if (len <= 1 || len > sizeof(buff) - 1) - return -EINVAL; - - if (copy_from_user(buff, buffer, len) != 0) - return -EFAULT; - - if (buff[len - 1] == '\n') - buff[len - 1] = '\0'; - else - buff[len] = '\0'; - - if (strcmp(buff, frv_cache_wback) == 0) { - /* switch dcache into write-back mode */ - frv_change_dcache_mode(HSR0_CBM_COPY_BACK); - return 0; - } - - if (strcmp(buff, frv_cache_wthru) == 0) { - /* switch dcache into write-through mode */ - frv_change_dcache_mode(HSR0_CBM_WRITE_THRU); - return 0; - } - - return -EINVAL; - } - - /* read the state */ - if (*ppos > 0) { - *lenp = 0; - return 0; - } - - hsr0 = __get_HSR(0); - switch (hsr0 & HSR0_CBM) { - case HSR0_CBM_WRITE_THRU: - memcpy(buff, frv_cache_wthru, sizeof(frv_cache_wthru) - 1); - buff[sizeof(frv_cache_wthru) - 1] = '\n'; - len = sizeof(frv_cache_wthru); - break; - default: - memcpy(buff, frv_cache_wback, sizeof(frv_cache_wback) - 1); - buff[sizeof(frv_cache_wback) - 1] = '\n'; - len = sizeof(frv_cache_wback); - break; - } - - if (len > *lenp) - len = *lenp; - - if (copy_to_user(buffer, buff, len) != 0) - return -EFAULT; - - *lenp = len; - *ppos = len; - return 0; - -} /* end procctl_frv_cachemode() */ - -/*****************************************************************************/ -/* - * permit the mm_struct the nominated process is using have its MMU context ID pinned - */ -#ifdef CONFIG_MMU -static int procctl_frv_pin_cxnr(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) -{ - pid_t pid; - char buff[16], *p; - int len; - - len = *lenp; - - if (write) { - /* potential state change */ - if (len <= 1 || len > sizeof(buff) - 1) - return -EINVAL; - - if (copy_from_user(buff, buffer, len) != 0) - return -EFAULT; - - if (buff[len - 1] == '\n') - buff[len - 1] = '\0'; - else - buff[len] = '\0'; - - pid = simple_strtoul(buff, &p, 10); - if (*p) - return -EINVAL; - - return cxn_pin_by_pid(pid); - } - - /* read the currently pinned CXN */ - if (*ppos > 0) { - *lenp = 0; - return 0; - } - - len = snprintf(buff, sizeof(buff), "%d\n", cxn_pinned); - if (len > *lenp) - len = *lenp; - - if (copy_to_user(buffer, buff, len) != 0) - return -EFAULT; - - *lenp = len; - *ppos = len; - return 0; - -} /* end procctl_frv_pin_cxnr() */ -#endif - -/* - * FR-V specific sysctls - */ -static struct ctl_table frv_table[] = -{ - { - .procname = "cache-mode", - .data = NULL, - .maxlen = 0, - .mode = 0644, - .proc_handler = procctl_frv_cachemode, - }, -#ifdef CONFIG_MMU - { - .procname = "pin-cxnr", - .data = NULL, - .maxlen = 0, - .mode = 0644, - .proc_handler = procctl_frv_pin_cxnr - }, -#endif - {} -}; - -/* - * Use a temporary sysctl number. Horrid, but will be cleaned up in 2.6 - * when all the PM interfaces exist nicely. - */ -static struct ctl_table frv_dir_table[] = -{ - { - .procname = "frv", - .mode = 0555, - .child = frv_table - }, - {} -}; - -/* - * Initialize power interface - */ -static int __init frv_sysctl_init(void) -{ - register_sysctl_table(frv_dir_table); - return 0; -} - -__initcall(frv_sysctl_init); diff --git a/arch/frv/kernel/time.c b/arch/frv/kernel/time.c deleted file mode 100644 index 332e00bf9d06..000000000000 --- a/arch/frv/kernel/time.c +++ /dev/null @@ -1,122 +0,0 @@ -/* time.c: FRV arch-specific time handling - * - * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - Derived from arch/m68k/kernel/time.c - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/param.h> -#include <linux/string.h> -#include <linux/interrupt.h> -#include <linux/profile.h> -#include <linux/irq.h> -#include <linux/mm.h> - -#include <asm/io.h> -#include <asm/timer-regs.h> -#include <asm/mb-regs.h> -#include <asm/mb86943a.h> - -#include <linux/timex.h> - -#define TICK_SIZE (tick_nsec / 1000) - -unsigned long __nongprelbss __clkin_clock_speed_HZ; -unsigned long __nongprelbss __ext_bus_clock_speed_HZ; -unsigned long __nongprelbss __res_bus_clock_speed_HZ; -unsigned long __nongprelbss __sdram_clock_speed_HZ; -unsigned long __nongprelbss __core_bus_clock_speed_HZ; -unsigned long __nongprelbss __core_clock_speed_HZ; -unsigned long __nongprelbss __dsu_clock_speed_HZ; -unsigned long __nongprelbss __serial_clock_speed_HZ; -unsigned long __delay_loops_MHz; - -static irqreturn_t timer_interrupt(int irq, void *dummy); - -static struct irqaction timer_irq = { - .handler = timer_interrupt, - .name = "timer", -}; - -/* - * timer_interrupt() needs to keep up the real-time clock, - * as well as call the "xtime_update()" routine every clocktick - */ -static irqreturn_t timer_interrupt(int irq, void *dummy) -{ - profile_tick(CPU_PROFILING); - - xtime_update(1); - -#ifdef CONFIG_HEARTBEAT - static unsigned short n; - n++; - __set_LEDS(n); -#endif /* CONFIG_HEARTBEAT */ - - update_process_times(user_mode(get_irq_regs())); - - return IRQ_HANDLED; -} - -void time_divisor_init(void) -{ - unsigned short base, pre, prediv; - - /* set the scheduling timer going */ - pre = 1; - prediv = 4; - base = __res_bus_clock_speed_HZ / pre / HZ / (1 << prediv); - - __set_TPRV(pre); - __set_TxCKSL_DATA(0, prediv); - __set_TCTR(TCTR_SC_CTR0 | TCTR_RL_RW_LH8 | TCTR_MODE_2); - __set_TCSR_DATA(0, base & 0xff); - __set_TCSR_DATA(0, base >> 8); -} - - -void read_persistent_clock(struct timespec *ts) -{ - unsigned int year, mon, day, hour, min, sec; - - extern void arch_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec); - - /* FIX by dqg : Set to zero for platforms that don't have tod */ - /* without this time is undefined and can overflow time_t, causing */ - /* very strange errors */ - year = 1980; - mon = day = 1; - hour = min = sec = 0; - arch_gettod (&year, &mon, &day, &hour, &min, &sec); - - if ((year += 1900) < 1970) - year += 100; - ts->tv_sec = mktime(year, mon, day, hour, min, sec); - ts->tv_nsec = 0; -} - -void time_init(void) -{ - /* install scheduling interrupt handler */ - setup_irq(IRQ_CPU_TIMER0, &timer_irq); - - time_divisor_init(); -} - -/* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long sched_clock(void) -{ - return jiffies_64 * (1000000000 / HZ); -} diff --git a/arch/frv/kernel/traps.c b/arch/frv/kernel/traps.c deleted file mode 100644 index fb08ebe0dab4..000000000000 --- a/arch/frv/kernel/traps.c +++ /dev/null @@ -1,642 +0,0 @@ -/* traps.c: high-level exception handler for FR-V - * - * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/sched/signal.h> -#include <linux/sched/debug.h> -#include <linux/signal.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/types.h> -#include <linux/user.h> -#include <linux/string.h> -#include <linux/linkage.h> -#include <linux/init.h> -#include <linux/module.h> - -#include <asm/asm-offsets.h> -#include <asm/setup.h> -#include <asm/fpu.h> -#include <linux/uaccess.h> -#include <asm/pgtable.h> -#include <asm/siginfo.h> -#include <asm/unaligned.h> - -void show_backtrace(struct pt_regs *, unsigned long); - -extern asmlinkage void __break_hijack_kernel_event(void); - -/*****************************************************************************/ -/* - * instruction access error - */ -asmlinkage void insn_access_error(unsigned long esfr1, unsigned long epcr0, unsigned long esr0) -{ - siginfo_t info; - - die_if_kernel("-- Insn Access Error --\n" - "EPCR0 : %08lx\n" - "ESR0 : %08lx\n", - epcr0, esr0); - - info.si_signo = SIGSEGV; - info.si_code = SEGV_ACCERR; - info.si_errno = 0; - info.si_addr = (void __user *) ((epcr0 & EPCR0_V) ? (epcr0 & EPCR0_PC) : __frame->pc); - - force_sig_info(info.si_signo, &info, current); -} /* end insn_access_error() */ - -/*****************************************************************************/ -/* - * handler for: - * - illegal instruction - * - privileged instruction - * - unsupported trap - * - debug exceptions - */ -asmlinkage void illegal_instruction(unsigned long esfr1, unsigned long epcr0, unsigned long esr0) -{ - siginfo_t info; - - die_if_kernel("-- Illegal Instruction --\n" - "EPCR0 : %08lx\n" - "ESR0 : %08lx\n" - "ESFR1 : %08lx\n", - epcr0, esr0, esfr1); - - info.si_errno = 0; - info.si_addr = (void __user *) ((epcr0 & EPCR0_V) ? (epcr0 & EPCR0_PC) : __frame->pc); - - switch (__frame->tbr & TBR_TT) { - case TBR_TT_ILLEGAL_INSTR: - info.si_signo = SIGILL; - info.si_code = ILL_ILLOPC; - break; - case TBR_TT_PRIV_INSTR: - info.si_signo = SIGILL; - info.si_code = ILL_PRVOPC; - break; - case TBR_TT_TRAP2 ... TBR_TT_TRAP126: - info.si_signo = SIGILL; - info.si_code = ILL_ILLTRP; - break; - /* GDB uses "tira gr0, #1" as a breakpoint instruction. */ - case TBR_TT_TRAP1: - case TBR_TT_BREAK: - info.si_signo = SIGTRAP; - info.si_code = - (__frame->__status & REG__STATUS_STEPPED) ? TRAP_TRACE : TRAP_BRKPT; - break; - } - - force_sig_info(info.si_signo, &info, current); -} /* end illegal_instruction() */ - -/*****************************************************************************/ -/* - * handle atomic operations with errors - * - arguments in gr8, gr9, gr10 - * - original memory value placed in gr5 - * - replacement memory value placed in gr9 - */ -asmlinkage void atomic_operation(unsigned long esfr1, unsigned long epcr0, - unsigned long esr0) -{ - static DEFINE_SPINLOCK(atomic_op_lock); - unsigned long x, y, z; - unsigned long __user *p; - mm_segment_t oldfs; - siginfo_t info; - int ret; - - y = 0; - z = 0; - - oldfs = get_fs(); - if (!user_mode(__frame)) - set_fs(KERNEL_DS); - - switch (__frame->tbr & TBR_TT) { - /* TIRA gr0,#120 - * u32 __atomic_user_cmpxchg32(u32 *ptr, u32 test, u32 new) - */ - case TBR_TT_ATOMIC_CMPXCHG32: - p = (unsigned long __user *) __frame->gr8; - x = __frame->gr9; - y = __frame->gr10; - - for (;;) { - ret = get_user(z, p); - if (ret < 0) - goto error; - - if (z != x) - goto done; - - spin_lock_irq(&atomic_op_lock); - - if (__get_user(z, p) == 0) { - if (z != x) - goto done2; - - if (__put_user(y, p) == 0) - goto done2; - goto error2; - } - - spin_unlock_irq(&atomic_op_lock); - } - - /* TIRA gr0,#121 - * u32 __atomic_kernel_xchg32(void *v, u32 new) - */ - case TBR_TT_ATOMIC_XCHG32: - p = (unsigned long __user *) __frame->gr8; - y = __frame->gr9; - - for (;;) { - ret = get_user(z, p); - if (ret < 0) - goto error; - - spin_lock_irq(&atomic_op_lock); - - if (__get_user(z, p) == 0) { - if (__put_user(y, p) == 0) - goto done2; - goto error2; - } - - spin_unlock_irq(&atomic_op_lock); - } - - /* TIRA gr0,#122 - * ulong __atomic_kernel_XOR_return(ulong i, ulong *v) - */ - case TBR_TT_ATOMIC_XOR: - p = (unsigned long __user *) __frame->gr8; - x = __frame->gr9; - - for (;;) { - ret = get_user(z, p); - if (ret < 0) - goto error; - - spin_lock_irq(&atomic_op_lock); - - if (__get_user(z, p) == 0) { - y = x ^ z; - if (__put_user(y, p) == 0) - goto done2; - goto error2; - } - - spin_unlock_irq(&atomic_op_lock); - } - - /* TIRA gr0,#123 - * ulong __atomic_kernel_OR_return(ulong i, ulong *v) - */ - case TBR_TT_ATOMIC_OR: - p = (unsigned long __user *) __frame->gr8; - x = __frame->gr9; - - for (;;) { - ret = get_user(z, p); - if (ret < 0) - goto error; - - spin_lock_irq(&atomic_op_lock); - - if (__get_user(z, p) == 0) { - y = x ^ z; - if (__put_user(y, p) == 0) - goto done2; - goto error2; - } - - spin_unlock_irq(&atomic_op_lock); - } - - /* TIRA gr0,#124 - * ulong __atomic_kernel_AND_return(ulong i, ulong *v) - */ - case TBR_TT_ATOMIC_AND: - p = (unsigned long __user *) __frame->gr8; - x = __frame->gr9; - - for (;;) { - ret = get_user(z, p); - if (ret < 0) - goto error; - - spin_lock_irq(&atomic_op_lock); - - if (__get_user(z, p) == 0) { - y = x & z; - if (__put_user(y, p) == 0) - goto done2; - goto error2; - } - - spin_unlock_irq(&atomic_op_lock); - } - - /* TIRA gr0,#125 - * int __atomic_user_sub_return(atomic_t *v, int i) - */ - case TBR_TT_ATOMIC_SUB: - p = (unsigned long __user *) __frame->gr8; - x = __frame->gr9; - - for (;;) { - ret = get_user(z, p); - if (ret < 0) - goto error; - - spin_lock_irq(&atomic_op_lock); - - if (__get_user(z, p) == 0) { - y = z - x; - if (__put_user(y, p) == 0) - goto done2; - goto error2; - } - - spin_unlock_irq(&atomic_op_lock); - } - - /* TIRA gr0,#126 - * int __atomic_user_add_return(atomic_t *v, int i) - */ - case TBR_TT_ATOMIC_ADD: - p = (unsigned long __user *) __frame->gr8; - x = __frame->gr9; - - for (;;) { - ret = get_user(z, p); - if (ret < 0) - goto error; - - spin_lock_irq(&atomic_op_lock); - - if (__get_user(z, p) == 0) { - y = z + x; - if (__put_user(y, p) == 0) - goto done2; - goto error2; - } - - spin_unlock_irq(&atomic_op_lock); - } - - default: - BUG(); - } - -done2: - spin_unlock_irq(&atomic_op_lock); -done: - if (!user_mode(__frame)) - set_fs(oldfs); - __frame->gr5 = z; - __frame->gr9 = y; - return; - -error2: - spin_unlock_irq(&atomic_op_lock); -error: - if (!user_mode(__frame)) - set_fs(oldfs); - __frame->pc -= 4; - - die_if_kernel("-- Atomic Op Error --\n"); - - info.si_signo = SIGSEGV; - info.si_code = SEGV_ACCERR; - info.si_errno = 0; - info.si_addr = (void __user *) __frame->pc; - - force_sig_info(info.si_signo, &info, current); -} - -/*****************************************************************************/ -/* - * - */ -asmlinkage void media_exception(unsigned long msr0, unsigned long msr1) -{ - siginfo_t info; - - die_if_kernel("-- Media Exception --\n" - "MSR0 : %08lx\n" - "MSR1 : %08lx\n", - msr0, msr1); - - info.si_signo = SIGFPE; - info.si_code = FPE_MDAOVF; - info.si_errno = 0; - info.si_addr = (void __user *) __frame->pc; - - force_sig_info(info.si_signo, &info, current); -} /* end media_exception() */ - -/*****************************************************************************/ -/* - * instruction or data access exception - */ -asmlinkage void memory_access_exception(unsigned long esr0, - unsigned long ear0, - unsigned long epcr0) -{ - siginfo_t info; - -#ifdef CONFIG_MMU - if (fixup_exception(__frame)) - return; -#endif - - die_if_kernel("-- Memory Access Exception --\n" - "ESR0 : %08lx\n" - "EAR0 : %08lx\n" - "EPCR0 : %08lx\n", - esr0, ear0, epcr0); - - info.si_signo = SIGSEGV; - info.si_code = SEGV_ACCERR; - info.si_errno = 0; - info.si_addr = NULL; - - if ((esr0 & (ESRx_VALID | ESR0_EAV)) == (ESRx_VALID | ESR0_EAV)) - info.si_addr = (void __user *) ear0; - - force_sig_info(info.si_signo, &info, current); - -} /* end memory_access_exception() */ - -/*****************************************************************************/ -/* - * data access error - * - double-word data load from CPU control area (0xFExxxxxx) - * - read performed on inactive or self-refreshing SDRAM - * - error notification from slave device - * - misaligned address - * - access to out of bounds memory region - * - user mode accessing privileged memory region - * - write to R/O memory region - */ -asmlinkage void data_access_error(unsigned long esfr1, unsigned long esr15, unsigned long ear15) -{ - siginfo_t info; - - die_if_kernel("-- Data Access Error --\n" - "ESR15 : %08lx\n" - "EAR15 : %08lx\n", - esr15, ear15); - - info.si_signo = SIGSEGV; - info.si_code = SEGV_ACCERR; - info.si_errno = 0; - info.si_addr = (void __user *) - (((esr15 & (ESRx_VALID|ESR15_EAV)) == (ESRx_VALID|ESR15_EAV)) ? ear15 : 0); - - force_sig_info(info.si_signo, &info, current); -} /* end data_access_error() */ - -/*****************************************************************************/ -/* - * data store error - should only happen if accessing inactive or self-refreshing SDRAM - */ -asmlinkage void data_store_error(unsigned long esfr1, unsigned long esr15) -{ - die_if_kernel("-- Data Store Error --\n" - "ESR15 : %08lx\n", - esr15); - BUG(); -} /* end data_store_error() */ - -/*****************************************************************************/ -/* - * - */ -asmlinkage void division_exception(unsigned long esfr1, unsigned long esr0, unsigned long isr) -{ - siginfo_t info; - - die_if_kernel("-- Division Exception --\n" - "ESR0 : %08lx\n" - "ISR : %08lx\n", - esr0, isr); - - info.si_signo = SIGFPE; - info.si_code = FPE_INTDIV; - info.si_errno = 0; - info.si_addr = (void __user *) __frame->pc; - - force_sig_info(info.si_signo, &info, current); -} /* end division_exception() */ - -/*****************************************************************************/ -/* - * - */ -asmlinkage void compound_exception(unsigned long esfr1, - unsigned long esr0, unsigned long esr14, unsigned long esr15, - unsigned long msr0, unsigned long msr1) -{ - die_if_kernel("-- Compound Exception --\n" - "ESR0 : %08lx\n" - "ESR15 : %08lx\n" - "ESR15 : %08lx\n" - "MSR0 : %08lx\n" - "MSR1 : %08lx\n", - esr0, esr14, esr15, msr0, msr1); - BUG(); -} /* end compound_exception() */ - -void show_stack(struct task_struct *task, unsigned long *sp) -{ -} - -void show_trace_task(struct task_struct *tsk) -{ - printk("CONTEXT: stack=0x%lx frame=0x%p LR=0x%lx RET=0x%lx\n", - tsk->thread.sp, tsk->thread.frame, tsk->thread.lr, tsk->thread.sched_lr); -} - -static const char *regnames[] = { - "PSR ", "ISR ", "CCR ", "CCCR", - "LR ", "LCR ", "PC ", "_stt", - "sys ", "GR8*", "GNE0", "GNE1", - "IACH", "IACL", - "TBR ", "SP ", "FP ", "GR3 ", - "GR4 ", "GR5 ", "GR6 ", "GR7 ", - "GR8 ", "GR9 ", "GR10", "GR11", - "GR12", "GR13", "GR14", "GR15", - "GR16", "GR17", "GR18", "GR19", - "GR20", "GR21", "GR22", "GR23", - "GR24", "GR25", "GR26", "GR27", - "EFRM", "CURR", "GR30", "BFRM" -}; - -void show_regs(struct pt_regs *regs) -{ - unsigned long *reg; - int loop; - - printk("\n"); - show_regs_print_info(KERN_DEFAULT); - - printk("Frame: @%08lx [%s]\n", - (unsigned long) regs, - regs->psr & PSR_S ? "kernel" : "user"); - - reg = (unsigned long *) regs; - for (loop = 0; loop < NR_PT_REGS; loop++) { - printk("%s %08lx", regnames[loop + 0], reg[loop + 0]); - - if (loop == NR_PT_REGS - 1 || loop % 5 == 4) - printk("\n"); - else - printk(" | "); - } -} - -void die_if_kernel(const char *str, ...) -{ - char buffer[256]; - va_list va; - - if (user_mode(__frame)) - return; - - va_start(va, str); - vsnprintf(buffer, sizeof(buffer), str, va); - va_end(va); - - console_verbose(); - printk("\n===================================\n"); - printk("%s\n", buffer); - show_backtrace(__frame, 0); - - __break_hijack_kernel_event(); - do_exit(SIGSEGV); -} - -/*****************************************************************************/ -/* - * dump the contents of an exception frame - */ -static void show_backtrace_regs(struct pt_regs *frame) -{ - unsigned long *reg; - int loop; - - /* print the registers for this frame */ - printk("<-- %s Frame: @%p -->\n", - frame->psr & PSR_S ? "Kernel Mode" : "User Mode", - frame); - - reg = (unsigned long *) frame; - for (loop = 0; loop < NR_PT_REGS; loop++) { - printk("%s %08lx", regnames[loop + 0], reg[loop + 0]); - - if (loop == NR_PT_REGS - 1 || loop % 5 == 4) - printk("\n"); - else - printk(" | "); - } - - printk("--------\n"); -} /* end show_backtrace_regs() */ - -/*****************************************************************************/ -/* - * generate a backtrace of the kernel stack - */ -void show_backtrace(struct pt_regs *frame, unsigned long sp) -{ - struct pt_regs *frame0; - unsigned long tos = 0, stop = 0, base; - int format; - - base = ((((unsigned long) frame) + 8191) & ~8191) - sizeof(struct user_context); - frame0 = (struct pt_regs *) base; - - if (sp) { - tos = sp; - stop = (unsigned long) frame; - } - - printk("\nProcess %s (pid: %d)\n\n", current->comm, current->pid); - - for (;;) { - /* dump stack segment between frames */ - //printk("%08lx -> %08lx\n", tos, stop); - format = 0; - while (tos < stop) { - if (format == 0) - printk(" %04lx :", tos & 0xffff); - - printk(" %08lx", *(unsigned long *) tos); - - tos += 4; - format++; - if (format == 8) { - printk("\n"); - format = 0; - } - } - - if (format > 0) - printk("\n"); - - /* dump frame 0 outside of the loop */ - if (frame == frame0) - break; - - tos = frame->sp; - if (((unsigned long) frame) + sizeof(*frame) != tos) { - printk("-- TOS %08lx does not follow frame %p --\n", - tos, frame); - break; - } - - show_backtrace_regs(frame); - - /* dump the stack between this frame and the next */ - stop = (unsigned long) frame->next_frame; - if (stop != base && - (stop < tos || - stop > base || - (stop < base && stop + sizeof(*frame) > base) || - stop & 3)) { - printk("-- next_frame %08lx is invalid (range %08lx-%08lx) --\n", - stop, tos, base); - break; - } - - /* move to next frame */ - frame = frame->next_frame; - } - - /* we can always dump frame 0, even if the rest of the stack is corrupt */ - show_backtrace_regs(frame0); - -} /* end show_backtrace() */ - -/*****************************************************************************/ -/* - * initialise traps - */ -void __init trap_init (void) -{ -} /* end trap_init() */ diff --git a/arch/frv/kernel/uaccess.c b/arch/frv/kernel/uaccess.c deleted file mode 100644 index 8b360b4222a5..000000000000 --- a/arch/frv/kernel/uaccess.c +++ /dev/null @@ -1,100 +0,0 @@ -/* uaccess.c: userspace access functions - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/uaccess.h> - -/*****************************************************************************/ -/* - * copy a null terminated string from userspace - */ -long strncpy_from_user(char *dst, const char __user *src, long count) -{ - unsigned long max; - char *p, ch; - long err = -EFAULT; - - BUG_ON(count < 0); - - p = dst; - -#ifndef CONFIG_MMU - if ((unsigned long) src < memory_start) - goto error; -#endif - - if ((unsigned long) src >= get_addr_limit()) - goto error; - - max = get_addr_limit() - (unsigned long) src; - if ((unsigned long) count > max) { - memset(dst + max, 0, count - max); - count = max; - } - - err = 0; - for (; count > 0; count--, p++, src++) { - __get_user_asm(err, ch, src, "ub", "=r"); - if (err < 0) - goto error; - if (!ch) - break; - *p = ch; - } - - err = p - dst; /* return length excluding NUL */ - - error: - if (count > 0) - memset(p, 0, count); /* clear remainder of buffer [security] */ - - return err; - -} /* end strncpy_from_user() */ - -EXPORT_SYMBOL(strncpy_from_user); - -/*****************************************************************************/ -/* - * Return the size of a string (including the ending 0) - * - * Return 0 on exception, a value greater than N if too long - */ -long strnlen_user(const char __user *src, long count) -{ - const char __user *p; - long err = 0; - char ch; - - BUG_ON(count < 0); - -#ifndef CONFIG_MMU - if ((unsigned long) src < memory_start) - return 0; -#endif - - if ((unsigned long) src >= get_addr_limit()) - return 0; - - for (p = src; count > 0; count--, p++) { - __get_user_asm(err, ch, p, "ub", "=r"); - if (err < 0) - return 0; - if (!ch) - break; - } - - return p - src + 1; /* return length including NUL */ - -} /* end strnlen_user() */ - -EXPORT_SYMBOL(strnlen_user); diff --git a/arch/frv/kernel/vmlinux.lds.S b/arch/frv/kernel/vmlinux.lds.S deleted file mode 100644 index 42806c512758..000000000000 --- a/arch/frv/kernel/vmlinux.lds.S +++ /dev/null @@ -1,136 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* ld script to make FRV Linux kernel - * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>; - */ -OUTPUT_FORMAT("elf32-frv", "elf32-frv", "elf32-frv") -OUTPUT_ARCH(frv) -ENTRY(_start) - -#include <asm-generic/vmlinux.lds.h> -#include <asm/processor.h> -#include <asm/page.h> -#include <asm/cache.h> -#include <asm/thread_info.h> - -jiffies = jiffies_64 + 4; - -__page_offset = CONFIG_PAGE_OFFSET; /* start of area covered by struct pages */ -__kernel_image_start = __page_offset; /* address at which kernel image resides */ - -SECTIONS -{ - . = __kernel_image_start; - - /* discardable initialisation code and data */ - . = ALIGN(PAGE_SIZE); /* Init code and data */ - __init_begin = .; - - _sinittext = .; - .init.text : { - HEAD_TEXT -#ifndef CONFIG_DEBUG_INFO - INIT_TEXT - EXIT_TEXT - EXIT_DATA - *(.exitcall.exit) -#endif - } - _einittext = .; - - INIT_DATA_SECTION(8) - PERCPU_SECTION(L1_CACHE_BYTES) - - . = ALIGN(PAGE_SIZE); - __init_end = .; - - .trap : { - /* trap table management - read entry-table.S before modifying */ - . = ALIGN(8192); - __trap_tables = .; - *(.trap.user) - *(.trap.kernel) - . = ALIGN(4096); - *(.trap.break) - } - - /* Text and read-only data */ - . = ALIGN(4); - _text = .; - _stext = .; - .text : { - *(.text..start) - *(.text..entry) - *(.text..break) - *(.text..tlbmiss) - TEXT_TEXT - SCHED_TEXT - CPUIDLE_TEXT - LOCK_TEXT -#ifdef CONFIG_DEBUG_INFO - INIT_TEXT - EXIT_TEXT - *(.exitcall.exit) -#endif - *(.fixup) - *(.gnu.warning) - *(.exitcall.exit) - } = 0x9090 - - _etext = .; /* End of text section */ - - RODATA - - .rodata : { - *(.trap.vector) - - /* this clause must not be modified - the ordering and adjacency are imperative */ - __trap_fixup_tables = .; - *(.trap.fixup.user .trap.fixup.kernel) - - } - - EXCEPTION_TABLE(8) - - _sdata = .; - .data : { /* Data */ - INIT_TASK_DATA(THREAD_SIZE) - CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) - DATA_DATA - *(.data.*) - EXIT_DATA - CONSTRUCTORS - } - - _edata = .; /* End of data section */ - - BUG_TABLE - - /* GP section */ - . = ALIGN(L1_CACHE_BYTES); - _gp = . + 2048; - PROVIDE (gp = _gp); - - .sdata : { *(.sdata .sdata.*) } - - /* BSS */ - . = ALIGN(L1_CACHE_BYTES); - __bss_start = .; - - .sbss : { *(.sbss .sbss.*) } - .bss : { *(.bss .bss.*) } - .bss..stack : { *(.bss) } - - __bss_stop = .; - _end = . ; - . = ALIGN(PAGE_SIZE); - __kernel_image_end = .; - - STABS_DEBUG - DWARF_DEBUG - - .comment 0 : { *(.comment) } - - DISCARDS -} - -__kernel_image_size_no_bss = __bss_start - __kernel_image_start; |