diff options
Diffstat (limited to 'arch/c6x/kernel')
| -rw-r--r-- | arch/c6x/kernel/Makefile | 13 | ||||
| -rw-r--r-- | arch/c6x/kernel/asm-offsets.c | 122 | ||||
| -rw-r--r-- | arch/c6x/kernel/c6x_ksyms.c | 62 | ||||
| -rw-r--r-- | arch/c6x/kernel/devicetree.c | 14 | ||||
| -rw-r--r-- | arch/c6x/kernel/entry.S | 736 | ||||
| -rw-r--r-- | arch/c6x/kernel/head.S | 81 | ||||
| -rw-r--r-- | arch/c6x/kernel/irq.c | 127 | ||||
| -rw-r--r-- | arch/c6x/kernel/module.c | 119 | ||||
| -rw-r--r-- | arch/c6x/kernel/process.c | 151 | ||||
| -rw-r--r-- | arch/c6x/kernel/ptrace.c | 144 | ||||
| -rw-r--r-- | arch/c6x/kernel/setup.c | 475 | ||||
| -rw-r--r-- | arch/c6x/kernel/signal.c | 323 | ||||
| -rw-r--r-- | arch/c6x/kernel/soc.c | 87 | ||||
| -rw-r--r-- | arch/c6x/kernel/switch_to.S | 71 | ||||
| -rw-r--r-- | arch/c6x/kernel/sys_c6x.c | 71 | ||||
| -rw-r--r-- | arch/c6x/kernel/time.c | 63 | ||||
| -rw-r--r-- | arch/c6x/kernel/traps.c | 407 | ||||
| -rw-r--r-- | arch/c6x/kernel/vectors.S | 78 | ||||
| -rw-r--r-- | arch/c6x/kernel/vmlinux.lds.S | 151 |
19 files changed, 0 insertions, 3295 deletions
diff --git a/arch/c6x/kernel/Makefile b/arch/c6x/kernel/Makefile deleted file mode 100644 index fbe74174de87..000000000000 --- a/arch/c6x/kernel/Makefile +++ /dev/null @@ -1,13 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# -# Makefile for arch/c6x/kernel/ -# - -extra-y := head.o vmlinux.lds - -obj-y := process.o traps.o irq.o signal.o ptrace.o -obj-y += setup.o sys_c6x.o time.o devicetree.o -obj-y += switch_to.o entry.o vectors.o c6x_ksyms.o -obj-y += soc.o - -obj-$(CONFIG_MODULES) += module.o diff --git a/arch/c6x/kernel/asm-offsets.c b/arch/c6x/kernel/asm-offsets.c deleted file mode 100644 index 0f8fde494875..000000000000 --- a/arch/c6x/kernel/asm-offsets.c +++ /dev/null @@ -1,122 +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/thread_info.h> -#include <asm/procinfo.h> -#include <linux/kbuild.h> -#include <linux/unistd.h> - -void foo(void) -{ - OFFSET(REGS_A16, pt_regs, a16); - OFFSET(REGS_A17, pt_regs, a17); - OFFSET(REGS_A18, pt_regs, a18); - OFFSET(REGS_A19, pt_regs, a19); - OFFSET(REGS_A20, pt_regs, a20); - OFFSET(REGS_A21, pt_regs, a21); - OFFSET(REGS_A22, pt_regs, a22); - OFFSET(REGS_A23, pt_regs, a23); - OFFSET(REGS_A24, pt_regs, a24); - OFFSET(REGS_A25, pt_regs, a25); - OFFSET(REGS_A26, pt_regs, a26); - OFFSET(REGS_A27, pt_regs, a27); - OFFSET(REGS_A28, pt_regs, a28); - OFFSET(REGS_A29, pt_regs, a29); - OFFSET(REGS_A30, pt_regs, a30); - OFFSET(REGS_A31, pt_regs, a31); - - OFFSET(REGS_B16, pt_regs, b16); - OFFSET(REGS_B17, pt_regs, b17); - OFFSET(REGS_B18, pt_regs, b18); - OFFSET(REGS_B19, pt_regs, b19); - OFFSET(REGS_B20, pt_regs, b20); - OFFSET(REGS_B21, pt_regs, b21); - OFFSET(REGS_B22, pt_regs, b22); - OFFSET(REGS_B23, pt_regs, b23); - OFFSET(REGS_B24, pt_regs, b24); - OFFSET(REGS_B25, pt_regs, b25); - OFFSET(REGS_B26, pt_regs, b26); - OFFSET(REGS_B27, pt_regs, b27); - OFFSET(REGS_B28, pt_regs, b28); - OFFSET(REGS_B29, pt_regs, b29); - OFFSET(REGS_B30, pt_regs, b30); - OFFSET(REGS_B31, pt_regs, b31); - - OFFSET(REGS_A0, pt_regs, a0); - OFFSET(REGS_A1, pt_regs, a1); - OFFSET(REGS_A2, pt_regs, a2); - OFFSET(REGS_A3, pt_regs, a3); - OFFSET(REGS_A4, pt_regs, a4); - OFFSET(REGS_A5, pt_regs, a5); - OFFSET(REGS_A6, pt_regs, a6); - OFFSET(REGS_A7, pt_regs, a7); - OFFSET(REGS_A8, pt_regs, a8); - OFFSET(REGS_A9, pt_regs, a9); - OFFSET(REGS_A10, pt_regs, a10); - OFFSET(REGS_A11, pt_regs, a11); - OFFSET(REGS_A12, pt_regs, a12); - OFFSET(REGS_A13, pt_regs, a13); - OFFSET(REGS_A14, pt_regs, a14); - OFFSET(REGS_A15, pt_regs, a15); - - OFFSET(REGS_B0, pt_regs, b0); - OFFSET(REGS_B1, pt_regs, b1); - OFFSET(REGS_B2, pt_regs, b2); - OFFSET(REGS_B3, pt_regs, b3); - OFFSET(REGS_B4, pt_regs, b4); - OFFSET(REGS_B5, pt_regs, b5); - OFFSET(REGS_B6, pt_regs, b6); - OFFSET(REGS_B7, pt_regs, b7); - OFFSET(REGS_B8, pt_regs, b8); - OFFSET(REGS_B9, pt_regs, b9); - OFFSET(REGS_B10, pt_regs, b10); - OFFSET(REGS_B11, pt_regs, b11); - OFFSET(REGS_B12, pt_regs, b12); - OFFSET(REGS_B13, pt_regs, b13); - OFFSET(REGS_DP, pt_regs, dp); - OFFSET(REGS_SP, pt_regs, sp); - - OFFSET(REGS_TSR, pt_regs, tsr); - OFFSET(REGS_ORIG_A4, pt_regs, orig_a4); - - DEFINE(REGS__END, sizeof(struct pt_regs)); - BLANK(); - - OFFSET(THREAD_PC, thread_struct, pc); - OFFSET(THREAD_B15_14, thread_struct, b15_14); - OFFSET(THREAD_A15_14, thread_struct, a15_14); - OFFSET(THREAD_B13_12, thread_struct, b13_12); - OFFSET(THREAD_A13_12, thread_struct, a13_12); - OFFSET(THREAD_B11_10, thread_struct, b11_10); - OFFSET(THREAD_A11_10, thread_struct, a11_10); - OFFSET(THREAD_RICL_ICL, thread_struct, ricl_icl); - BLANK(); - - OFFSET(TASK_STATE, task_struct, state); - BLANK(); - - OFFSET(THREAD_INFO_FLAGS, thread_info, flags); - OFFSET(THREAD_INFO_PREEMPT_COUNT, thread_info, preempt_count); - BLANK(); - - /* These would be unneccessary if we ran asm files - * through the preprocessor. - */ - DEFINE(KTHREAD_SHIFT, THREAD_SHIFT); - DEFINE(KTHREAD_START_SP, THREAD_START_SP); - DEFINE(ENOSYS_, ENOSYS); - DEFINE(NR_SYSCALLS_, __NR_syscalls); - - DEFINE(_TIF_SYSCALL_TRACE, (1<<TIF_SYSCALL_TRACE)); - DEFINE(_TIF_NOTIFY_RESUME, (1<<TIF_NOTIFY_RESUME)); - DEFINE(_TIF_SIGPENDING, (1<<TIF_SIGPENDING)); - DEFINE(_TIF_NEED_RESCHED, (1<<TIF_NEED_RESCHED)); - - DEFINE(_TIF_ALLWORK_MASK, TIF_ALLWORK_MASK); - DEFINE(_TIF_WORK_MASK, TIF_WORK_MASK); -} diff --git a/arch/c6x/kernel/c6x_ksyms.c b/arch/c6x/kernel/c6x_ksyms.c deleted file mode 100644 index 5a39f52f9db4..000000000000 --- a/arch/c6x/kernel/c6x_ksyms.c +++ /dev/null @@ -1,62 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - */ -#include <linux/module.h> -#include <asm/checksum.h> -#include <linux/io.h> - -/* - * libgcc functions - used internally by the compiler... - */ -extern int __c6xabi_divi(int dividend, int divisor); -EXPORT_SYMBOL(__c6xabi_divi); - -extern unsigned __c6xabi_divu(unsigned dividend, unsigned divisor); -EXPORT_SYMBOL(__c6xabi_divu); - -extern int __c6xabi_remi(int dividend, int divisor); -EXPORT_SYMBOL(__c6xabi_remi); - -extern unsigned __c6xabi_remu(unsigned dividend, unsigned divisor); -EXPORT_SYMBOL(__c6xabi_remu); - -extern int __c6xabi_divremi(int dividend, int divisor); -EXPORT_SYMBOL(__c6xabi_divremi); - -extern unsigned __c6xabi_divremu(unsigned dividend, unsigned divisor); -EXPORT_SYMBOL(__c6xabi_divremu); - -extern unsigned long long __c6xabi_mpyll(unsigned long long src1, - unsigned long long src2); -EXPORT_SYMBOL(__c6xabi_mpyll); - -extern long long __c6xabi_negll(long long src); -EXPORT_SYMBOL(__c6xabi_negll); - -extern unsigned long long __c6xabi_llshl(unsigned long long src1, uint src2); -EXPORT_SYMBOL(__c6xabi_llshl); - -extern long long __c6xabi_llshr(long long src1, uint src2); -EXPORT_SYMBOL(__c6xabi_llshr); - -extern unsigned long long __c6xabi_llshru(unsigned long long src1, uint src2); -EXPORT_SYMBOL(__c6xabi_llshru); - -extern void __c6xabi_strasgi(int *dst, const int *src, unsigned cnt); -EXPORT_SYMBOL(__c6xabi_strasgi); - -extern void __c6xabi_push_rts(void); -EXPORT_SYMBOL(__c6xabi_push_rts); - -extern void __c6xabi_pop_rts(void); -EXPORT_SYMBOL(__c6xabi_pop_rts); - -extern void __c6xabi_strasgi_64plus(int *dst, const int *src, unsigned cnt); -EXPORT_SYMBOL(__c6xabi_strasgi_64plus); - -/* lib functions */ -EXPORT_SYMBOL(memcpy); diff --git a/arch/c6x/kernel/devicetree.c b/arch/c6x/kernel/devicetree.c deleted file mode 100644 index a0c73f0545b2..000000000000 --- a/arch/c6x/kernel/devicetree.c +++ /dev/null @@ -1,14 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Architecture specific OF callbacks. - * - * Copyright (C) 2011 Texas Instruments Incorporated - * Author: Mark Salter <msalter@redhat.com> - */ -#include <linux/init.h> -#include <linux/memblock.h> - -void __init early_init_dt_add_memory_arch(u64 base, u64 size) -{ - c6x_add_memory(base, size); -} diff --git a/arch/c6x/kernel/entry.S b/arch/c6x/kernel/entry.S deleted file mode 100644 index 4332a10aec6c..000000000000 --- a/arch/c6x/kernel/entry.S +++ /dev/null @@ -1,736 +0,0 @@ -; SPDX-License-Identifier: GPL-2.0-only -; -; Port on Texas Instruments TMS320C6x architecture -; -; Copyright (C) 2004-2011 Texas Instruments Incorporated -; Author: Aurelien Jacquiot (aurelien.jacquiot@virtuallogix.com) -; Updated for 2.6.34: Mark Salter <msalter@redhat.com> -; - -#include <linux/sys.h> -#include <linux/linkage.h> -#include <asm/thread_info.h> -#include <asm/asm-offsets.h> -#include <asm/unistd.h> -#include <asm/errno.h> - -; Registers naming -#define DP B14 -#define SP B15 - -#ifndef CONFIG_PREEMPT -#define resume_kernel restore_all -#endif - - .altmacro - - .macro MASK_INT reg - MVC .S2 CSR,reg - CLR .S2 reg,0,0,reg - MVC .S2 reg,CSR - .endm - - .macro UNMASK_INT reg - MVC .S2 CSR,reg - SET .S2 reg,0,0,reg - MVC .S2 reg,CSR - .endm - - .macro GET_THREAD_INFO reg - SHR .S1X SP,THREAD_SHIFT,reg - SHL .S1 reg,THREAD_SHIFT,reg - .endm - - ;; - ;; This defines the normal kernel pt_regs layout. - ;; - .macro SAVE_ALL __rp __tsr - STW .D2T2 B0,*SP--[2] ; save original B0 - MVKL .S2 current_ksp,B0 - MVKH .S2 current_ksp,B0 - LDW .D2T2 *B0,B1 ; KSP - - NOP 3 - STW .D2T2 B1,*+SP[1] ; save original B1 - XOR .D2 SP,B1,B0 ; (SP ^ KSP) - LDW .D2T2 *+SP[1],B1 ; restore B0/B1 - LDW .D2T2 *++SP[2],B0 - SHR .S2 B0,THREAD_SHIFT,B0 ; 0 if already using kstack - [B0] STDW .D2T2 SP:DP,*--B1[1] ; user: save user sp/dp kstack - [B0] MV .S2 B1,SP ; and switch to kstack -||[!B0] STDW .D2T2 SP:DP,*--SP[1] ; kernel: save on current stack - - SUBAW .D2 SP,2,SP - - ADD .D1X SP,-8,A15 - || STDW .D2T1 A15:A14,*SP--[16] ; save A15:A14 - - STDW .D2T2 B13:B12,*SP--[1] - || STDW .D1T1 A13:A12,*A15--[1] - || MVC .S2 __rp,B13 - - STDW .D2T2 B11:B10,*SP--[1] - || STDW .D1T1 A11:A10,*A15--[1] - || MVC .S2 CSR,B12 - - STDW .D2T2 B9:B8,*SP--[1] - || STDW .D1T1 A9:A8,*A15--[1] - || MVC .S2 RILC,B11 - STDW .D2T2 B7:B6,*SP--[1] - || STDW .D1T1 A7:A6,*A15--[1] - || MVC .S2 ILC,B10 - - STDW .D2T2 B5:B4,*SP--[1] - || STDW .D1T1 A5:A4,*A15--[1] - - STDW .D2T2 B3:B2,*SP--[1] - || STDW .D1T1 A3:A2,*A15--[1] - || MVC .S2 __tsr,B5 - - STDW .D2T2 B1:B0,*SP--[1] - || STDW .D1T1 A1:A0,*A15--[1] - || MV .S1X B5,A5 - - STDW .D2T2 B31:B30,*SP--[1] - || STDW .D1T1 A31:A30,*A15--[1] - STDW .D2T2 B29:B28,*SP--[1] - || STDW .D1T1 A29:A28,*A15--[1] - STDW .D2T2 B27:B26,*SP--[1] - || STDW .D1T1 A27:A26,*A15--[1] - STDW .D2T2 B25:B24,*SP--[1] - || STDW .D1T1 A25:A24,*A15--[1] - STDW .D2T2 B23:B22,*SP--[1] - || STDW .D1T1 A23:A22,*A15--[1] - STDW .D2T2 B21:B20,*SP--[1] - || STDW .D1T1 A21:A20,*A15--[1] - STDW .D2T2 B19:B18,*SP--[1] - || STDW .D1T1 A19:A18,*A15--[1] - STDW .D2T2 B17:B16,*SP--[1] - || STDW .D1T1 A17:A16,*A15--[1] - - STDW .D2T2 B13:B12,*SP--[1] ; save PC and CSR - - STDW .D2T2 B11:B10,*SP--[1] ; save RILC and ILC - STDW .D2T1 A5:A4,*SP--[1] ; save TSR and orig A4 - - ;; We left an unused word on the stack just above pt_regs. - ;; It is used to save whether or not this frame is due to - ;; a syscall. It is cleared here, but the syscall handler - ;; sets it to a non-zero value. - MVK .L2 0,B1 - STW .D2T2 B1,*+SP(REGS__END+8) ; clear syscall flag - .endm - - .macro RESTORE_ALL __rp __tsr - LDDW .D2T2 *++SP[1],B9:B8 ; get TSR (B9) - LDDW .D2T2 *++SP[1],B11:B10 ; get RILC (B11) and ILC (B10) - LDDW .D2T2 *++SP[1],B13:B12 ; get PC (B13) and CSR (B12) - - ADDAW .D1X SP,30,A15 - - LDDW .D1T1 *++A15[1],A17:A16 - || LDDW .D2T2 *++SP[1],B17:B16 - LDDW .D1T1 *++A15[1],A19:A18 - || LDDW .D2T2 *++SP[1],B19:B18 - LDDW .D1T1 *++A15[1],A21:A20 - || LDDW .D2T2 *++SP[1],B21:B20 - LDDW .D1T1 *++A15[1],A23:A22 - || LDDW .D2T2 *++SP[1],B23:B22 - LDDW .D1T1 *++A15[1],A25:A24 - || LDDW .D2T2 *++SP[1],B25:B24 - LDDW .D1T1 *++A15[1],A27:A26 - || LDDW .D2T2 *++SP[1],B27:B26 - LDDW .D1T1 *++A15[1],A29:A28 - || LDDW .D2T2 *++SP[1],B29:B28 - LDDW .D1T1 *++A15[1],A31:A30 - || LDDW .D2T2 *++SP[1],B31:B30 - - LDDW .D1T1 *++A15[1],A1:A0 - || LDDW .D2T2 *++SP[1],B1:B0 - - LDDW .D1T1 *++A15[1],A3:A2 - || LDDW .D2T2 *++SP[1],B3:B2 - || MVC .S2 B9,__tsr - LDDW .D1T1 *++A15[1],A5:A4 - || LDDW .D2T2 *++SP[1],B5:B4 - || MVC .S2 B11,RILC - LDDW .D1T1 *++A15[1],A7:A6 - || LDDW .D2T2 *++SP[1],B7:B6 - || MVC .S2 B10,ILC - - LDDW .D1T1 *++A15[1],A9:A8 - || LDDW .D2T2 *++SP[1],B9:B8 - || MVC .S2 B13,__rp - - LDDW .D1T1 *++A15[1],A11:A10 - || LDDW .D2T2 *++SP[1],B11:B10 - || MVC .S2 B12,CSR - - LDDW .D1T1 *++A15[1],A13:A12 - || LDDW .D2T2 *++SP[1],B13:B12 - - MV .D2X A15,SP - || MVKL .S1 current_ksp,A15 - MVKH .S1 current_ksp,A15 - || ADDAW .D1X SP,6,A14 - STW .D1T1 A14,*A15 ; save kernel stack pointer - - LDDW .D2T1 *++SP[1],A15:A14 - - B .S2 __rp ; return from interruption - LDDW .D2T2 *+SP[1],SP:DP - NOP 4 - .endm - - .section .text - - ;; - ;; Jump to schedule() then return to ret_from_exception - ;; -_reschedule: -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 schedule,A0 - MVKH .S1 schedule,A0 - B .S2X A0 -#else - B .S1 schedule -#endif - ADDKPC .S2 ret_from_exception,B3,4 - - ;; - ;; Called before syscall handler when process is being debugged - ;; -tracesys_on: -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 syscall_trace_entry,A0 - MVKH .S1 syscall_trace_entry,A0 - B .S2X A0 -#else - B .S1 syscall_trace_entry -#endif - ADDKPC .S2 ret_from_syscall_trace,B3,3 - ADD .S1X 8,SP,A4 - -ret_from_syscall_trace: - ;; tracing returns (possibly new) syscall number - MV .D2X A4,B0 - || MVK .S2 __NR_syscalls,B1 - CMPLTU .L2 B0,B1,B1 - - [!B1] BNOP .S2 ret_from_syscall_function,5 - || MVK .S1 -ENOSYS,A4 - - ;; reload syscall args from (possibly modified) stack frame - ;; and get syscall handler addr from sys_call_table: - LDW .D2T2 *+SP(REGS_B4+8),B4 - || MVKL .S2 sys_call_table,B1 - LDW .D2T1 *+SP(REGS_A6+8),A6 - || MVKH .S2 sys_call_table,B1 - LDW .D2T2 *+B1[B0],B0 - || MVKL .S2 ret_from_syscall_function,B3 - LDW .D2T2 *+SP(REGS_B6+8),B6 - || MVKH .S2 ret_from_syscall_function,B3 - LDW .D2T1 *+SP(REGS_A8+8),A8 - LDW .D2T2 *+SP(REGS_B8+8),B8 - NOP - ; B0 = sys_call_table[__NR_*] - BNOP .S2 B0,5 ; branch to syscall handler - || LDW .D2T1 *+SP(REGS_ORIG_A4+8),A4 - -syscall_exit_work: - AND .D1 _TIF_SYSCALL_TRACE,A2,A0 - [!A0] BNOP .S1 work_pending,5 - [A0] B .S2 syscall_trace_exit - ADDKPC .S2 resume_userspace,B3,1 - MVC .S2 CSR,B1 - SET .S2 B1,0,0,B1 - MVC .S2 B1,CSR ; enable ints - -work_pending: - AND .D1 _TIF_NEED_RESCHED,A2,A0 - [!A0] BNOP .S1 work_notifysig,5 - -work_resched: -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 schedule,A1 - MVKH .S1 schedule,A1 - B .S2X A1 -#else - B .S2 schedule -#endif - ADDKPC .S2 work_rescheduled,B3,4 -work_rescheduled: - ;; make sure we don't miss an interrupt setting need_resched or - ;; sigpending between sampling and the rti - MASK_INT B2 - GET_THREAD_INFO A12 - LDW .D1T1 *+A12(THREAD_INFO_FLAGS),A2 - MVK .S1 _TIF_WORK_MASK,A1 - MVK .S1 _TIF_NEED_RESCHED,A3 - NOP 2 - AND .D1 A1,A2,A0 - || AND .S1 A3,A2,A1 - [!A0] BNOP .S1 restore_all,5 - [A1] BNOP .S1 work_resched,5 - -work_notifysig: - ;; enable interrupts for do_notify_resume() - UNMASK_INT B2 - B .S2 do_notify_resume - LDW .D2T1 *+SP(REGS__END+8),A6 ; syscall flag - ADDKPC .S2 resume_userspace,B3,1 - ADD .S1X 8,SP,A4 ; pt_regs pointer is first arg - MV .D2X A2,B4 ; thread_info flags is second arg - - ;; - ;; On C64x+, the return way from exception and interrupt - ;; is a little bit different - ;; -ENTRY(ret_from_exception) -#ifdef CONFIG_PREEMPT - MASK_INT B2 -#endif - -ENTRY(ret_from_interrupt) - ;; - ;; Check if we are comming from user mode. - ;; - LDW .D2T2 *+SP(REGS_TSR+8),B0 - MVK .S2 0x40,B1 - NOP 3 - AND .D2 B0,B1,B0 - [!B0] BNOP .S2 resume_kernel,5 - -resume_userspace: - ;; make sure we don't miss an interrupt setting need_resched or - ;; sigpending between sampling and the rti - MASK_INT B2 - GET_THREAD_INFO A12 - LDW .D1T1 *+A12(THREAD_INFO_FLAGS),A2 - MVK .S1 _TIF_WORK_MASK,A1 - MVK .S1 _TIF_NEED_RESCHED,A3 - NOP 2 - AND .D1 A1,A2,A0 - [A0] BNOP .S1 work_pending,5 - BNOP .S1 restore_all,5 - - ;; - ;; System call handling - ;; B0 = syscall number (in sys_call_table) - ;; A4,B4,A6,B6,A8,B8 = arguments of the syscall function - ;; A4 is the return value register - ;; -system_call_saved: - MVK .L2 1,B2 - STW .D2T2 B2,*+SP(REGS__END+8) ; set syscall flag - MVC .S2 B2,ECR ; ack the software exception - - UNMASK_INT B2 ; re-enable global IT - -system_call_saved_noack: - ;; Check system call number - MVK .S2 __NR_syscalls,B1 -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 sys_ni_syscall,A0 -#endif - CMPLTU .L2 B0,B1,B1 -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKH .S1 sys_ni_syscall,A0 -#endif - - ;; Check for ptrace - GET_THREAD_INFO A12 - -#ifdef CONFIG_C6X_BIG_KERNEL - [!B1] B .S2X A0 -#else - [!B1] B .S2 sys_ni_syscall -#endif - [!B1] ADDKPC .S2 ret_from_syscall_function,B3,4 - - ;; Get syscall handler addr from sys_call_table - ;; call tracesys_on or call syscall handler - LDW .D1T1 *+A12(THREAD_INFO_FLAGS),A2 - || MVKL .S2 sys_call_table,B1 - MVKH .S2 sys_call_table,B1 - LDW .D2T2 *+B1[B0],B0 - NOP 2 - ; A2 = thread_info flags - AND .D1 _TIF_SYSCALL_TRACE,A2,A2 - [A2] BNOP .S1 tracesys_on,5 - ;; B0 = _sys_call_table[__NR_*] - B .S2 B0 - ADDKPC .S2 ret_from_syscall_function,B3,4 - -ret_from_syscall_function: - STW .D2T1 A4,*+SP(REGS_A4+8) ; save return value in A4 - ; original A4 is in orig_A4 -syscall_exit: - ;; make sure we don't miss an interrupt setting need_resched or - ;; sigpending between sampling and the rti - MASK_INT B2 - LDW .D1T1 *+A12(THREAD_INFO_FLAGS),A2 - MVK .S1 _TIF_ALLWORK_MASK,A1 - NOP 3 - AND .D1 A1,A2,A2 ; check for work to do - [A2] BNOP .S1 syscall_exit_work,5 - -restore_all: - RESTORE_ALL NRP,NTSR - - ;; - ;; After a fork we jump here directly from resume, - ;; so that A4 contains the previous task structure. - ;; -ENTRY(ret_from_fork) -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 schedule_tail,A0 - MVKH .S1 schedule_tail,A0 - B .S2X A0 -#else - B .S2 schedule_tail -#endif - ADDKPC .S2 ret_from_fork_2,B3,4 -ret_from_fork_2: - ;; return 0 in A4 for child process - GET_THREAD_INFO A12 - BNOP .S2 syscall_exit,3 - MVK .L2 0,B0 - STW .D2T2 B0,*+SP(REGS_A4+8) -ENDPROC(ret_from_fork) - -ENTRY(ret_from_kernel_thread) -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 schedule_tail,A0 - MVKH .S1 schedule_tail,A0 - B .S2X A0 -#else - B .S2 schedule_tail -#endif - LDW .D2T2 *+SP(REGS_A0+8),B10 /* get fn */ - ADDKPC .S2 0f,B3,3 -0: - B .S2 B10 /* call fn */ - LDW .D2T1 *+SP(REGS_A1+8),A4 /* get arg */ - ADDKPC .S2 ret_from_fork_2,B3,3 -ENDPROC(ret_from_kernel_thread) - - ;; - ;; These are the interrupt handlers, responsible for calling c6x_do_IRQ() - ;; - .macro SAVE_ALL_INT - SAVE_ALL IRP,ITSR - .endm - - .macro CALL_INT int -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 c6x_do_IRQ,A0 - MVKH .S1 c6x_do_IRQ,A0 - BNOP .S2X A0,1 - MVK .S1 int,A4 - ADDAW .D2 SP,2,B4 - MVKL .S2 ret_from_interrupt,B3 - MVKH .S2 ret_from_interrupt,B3 -#else - CALLP .S2 c6x_do_IRQ,B3 - || MVK .S1 int,A4 - || ADDAW .D2 SP,2,B4 - B .S1 ret_from_interrupt - NOP 5 -#endif - .endm - -ENTRY(_int4_handler) - SAVE_ALL_INT - CALL_INT 4 -ENDPROC(_int4_handler) - -ENTRY(_int5_handler) - SAVE_ALL_INT - CALL_INT 5 -ENDPROC(_int5_handler) - -ENTRY(_int6_handler) - SAVE_ALL_INT - CALL_INT 6 -ENDPROC(_int6_handler) - -ENTRY(_int7_handler) - SAVE_ALL_INT - CALL_INT 7 -ENDPROC(_int7_handler) - -ENTRY(_int8_handler) - SAVE_ALL_INT - CALL_INT 8 -ENDPROC(_int8_handler) - -ENTRY(_int9_handler) - SAVE_ALL_INT - CALL_INT 9 -ENDPROC(_int9_handler) - -ENTRY(_int10_handler) - SAVE_ALL_INT - CALL_INT 10 -ENDPROC(_int10_handler) - -ENTRY(_int11_handler) - SAVE_ALL_INT - CALL_INT 11 -ENDPROC(_int11_handler) - -ENTRY(_int12_handler) - SAVE_ALL_INT - CALL_INT 12 -ENDPROC(_int12_handler) - -ENTRY(_int13_handler) - SAVE_ALL_INT - CALL_INT 13 -ENDPROC(_int13_handler) - -ENTRY(_int14_handler) - SAVE_ALL_INT - CALL_INT 14 -ENDPROC(_int14_handler) - -ENTRY(_int15_handler) - SAVE_ALL_INT - CALL_INT 15 -ENDPROC(_int15_handler) - - ;; - ;; Handler for uninitialized and spurious interrupts - ;; -ENTRY(_bad_interrupt) - B .S2 IRP - NOP 5 -ENDPROC(_bad_interrupt) - - ;; - ;; Entry for NMI/exceptions/syscall - ;; -ENTRY(_nmi_handler) - SAVE_ALL NRP,NTSR - - MVC .S2 EFR,B2 - CMPEQ .L2 1,B2,B2 - || MVC .S2 TSR,B1 - CLR .S2 B1,10,10,B1 - MVC .S2 B1,TSR -#ifdef CONFIG_C6X_BIG_KERNEL - [!B2] MVKL .S1 process_exception,A0 - [!B2] MVKH .S1 process_exception,A0 - [!B2] B .S2X A0 -#else - [!B2] B .S2 process_exception -#endif - [B2] B .S2 system_call_saved - [!B2] ADDAW .D2 SP,2,B1 - [!B2] MV .D1X B1,A4 - ADDKPC .S2 ret_from_trap,B3,2 - -ret_from_trap: - MV .D2X A4,B0 - [!B0] BNOP .S2 ret_from_exception,5 - -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S2 system_call_saved_noack,B3 - MVKH .S2 system_call_saved_noack,B3 -#endif - LDW .D2T2 *+SP(REGS_B0+8),B0 - LDW .D2T1 *+SP(REGS_A4+8),A4 - LDW .D2T2 *+SP(REGS_B4+8),B4 - LDW .D2T1 *+SP(REGS_A6+8),A6 - LDW .D2T2 *+SP(REGS_B6+8),B6 - LDW .D2T1 *+SP(REGS_A8+8),A8 -#ifdef CONFIG_C6X_BIG_KERNEL - || B .S2 B3 -#else - || B .S2 system_call_saved_noack -#endif - LDW .D2T2 *+SP(REGS_B8+8),B8 - NOP 4 -ENDPROC(_nmi_handler) - - ;; - ;; Jump to schedule() then return to ret_from_isr - ;; -#ifdef CONFIG_PREEMPT -resume_kernel: - GET_THREAD_INFO A12 - LDW .D1T1 *+A12(THREAD_INFO_PREEMPT_COUNT),A1 - NOP 4 - [A1] BNOP .S2 restore_all,5 - -preempt_schedule: - GET_THREAD_INFO A2 - LDW .D1T1 *+A2(THREAD_INFO_FLAGS),A1 -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S2 preempt_schedule_irq,B0 - MVKH .S2 preempt_schedule_irq,B0 - NOP 2 -#else - NOP 4 -#endif - AND .D1 _TIF_NEED_RESCHED,A1,A1 - [!A1] BNOP .S2 restore_all,5 -#ifdef CONFIG_C6X_BIG_KERNEL - B .S2 B0 -#else - B .S2 preempt_schedule_irq -#endif - ADDKPC .S2 preempt_schedule,B3,4 -#endif /* CONFIG_PREEMPT */ - -ENTRY(enable_exception) - DINT - MVC .S2 TSR,B0 - MVC .S2 B3,NRP - MVK .L2 0xc,B1 - OR .D2 B0,B1,B0 - MVC .S2 B0,TSR ; Set GEE and XEN in TSR - B .S2 NRP - NOP 5 -ENDPROC(enable_exception) - - ;; - ;; Special system calls - ;; return address is in B3 - ;; -ENTRY(sys_rt_sigreturn) - ADD .D1X SP,8,A4 -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 do_rt_sigreturn,A0 - MVKH .S1 do_rt_sigreturn,A0 - BNOP .S2X A0,5 -#else - || B .S2 do_rt_sigreturn - NOP 5 -#endif -ENDPROC(sys_rt_sigreturn) - -ENTRY(sys_pread_c6x) - MV .D2X A8,B7 -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 sys_pread64,A0 - MVKH .S1 sys_pread64,A0 - BNOP .S2X A0,5 -#else - || B .S2 sys_pread64 - NOP 5 -#endif -ENDPROC(sys_pread_c6x) - -ENTRY(sys_pwrite_c6x) - MV .D2X A8,B7 -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 sys_pwrite64,A0 - MVKH .S1 sys_pwrite64,A0 - BNOP .S2X A0,5 -#else - || B .S2 sys_pwrite64 - NOP 5 -#endif -ENDPROC(sys_pwrite_c6x) - -;; On Entry -;; A4 - path -;; B4 - offset_lo (LE), offset_hi (BE) -;; A6 - offset_lo (BE), offset_hi (LE) -ENTRY(sys_truncate64_c6x) -#ifdef CONFIG_CPU_BIG_ENDIAN - MV .S2 B4,B5 - MV .D2X A6,B4 -#else - MV .D2X A6,B5 -#endif -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 sys_truncate64,A0 - MVKH .S1 sys_truncate64,A0 - BNOP .S2X A0,5 -#else - || B .S2 sys_truncate64 - NOP 5 -#endif -ENDPROC(sys_truncate64_c6x) - -;; On Entry -;; A4 - fd -;; B4 - offset_lo (LE), offset_hi (BE) -;; A6 - offset_lo (BE), offset_hi (LE) -ENTRY(sys_ftruncate64_c6x) -#ifdef CONFIG_CPU_BIG_ENDIAN - MV .S2 B4,B5 - MV .D2X A6,B4 -#else - MV .D2X A6,B5 -#endif -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 sys_ftruncate64,A0 - MVKH .S1 sys_ftruncate64,A0 - BNOP .S2X A0,5 -#else - || B .S2 sys_ftruncate64 - NOP 5 -#endif -ENDPROC(sys_ftruncate64_c6x) - -;; On Entry -;; A4 - fd -;; B4 - offset_lo (LE), offset_hi (BE) -;; A6 - offset_lo (BE), offset_hi (LE) -;; B6 - len_lo (LE), len_hi (BE) -;; A8 - len_lo (BE), len_hi (LE) -;; B8 - advice -ENTRY(sys_fadvise64_64_c6x) -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 sys_fadvise64_64,A0 - MVKH .S1 sys_fadvise64_64,A0 - BNOP .S2X A0,2 -#else - B .S2 sys_fadvise64_64 - NOP 2 -#endif -#ifdef CONFIG_CPU_BIG_ENDIAN - MV .L2 B4,B5 - || MV .D2X A6,B4 - MV .L1 A8,A6 - || MV .D1X B6,A7 -#else - MV .D2X A6,B5 - MV .L1 A8,A7 - || MV .D1X B6,A6 -#endif - MV .L2 B8,B6 -ENDPROC(sys_fadvise64_64_c6x) - -;; On Entry -;; A4 - fd -;; B4 - mode -;; A6 - offset_hi -;; B6 - offset_lo -;; A8 - len_hi -;; B8 - len_lo -ENTRY(sys_fallocate_c6x) -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 sys_fallocate,A0 - MVKH .S1 sys_fallocate,A0 - BNOP .S2X A0,1 -#else - B .S2 sys_fallocate - NOP -#endif - MV .D1 A6,A7 - MV .D1X B6,A6 - MV .D2X A8,B7 - MV .D2 B8,B6 -ENDPROC(sys_fallocate_c6x) - - ;; put this in .neardata for faster access when using DSBT mode - .section .neardata,"aw",@progbits - .global current_ksp - .hidden current_ksp -current_ksp: - .word init_thread_union + THREAD_START_SP diff --git a/arch/c6x/kernel/head.S b/arch/c6x/kernel/head.S deleted file mode 100644 index fecbeef827bc..000000000000 --- a/arch/c6x/kernel/head.S +++ /dev/null @@ -1,81 +0,0 @@ -; SPDX-License-Identifier: GPL-2.0-only -; -; Port on Texas Instruments TMS320C6x architecture -; -; Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated -; Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) -; -#include <linux/linkage.h> -#include <linux/of_fdt.h> -#include <asm/asm-offsets.h> - - __HEAD -ENTRY(_c_int00) - ;; Save magic and pointer - MV .S1 A4,A10 - MV .S2 B4,B10 - MVKL .S2 __bss_start,B5 - MVKH .S2 __bss_start,B5 - MVKL .S2 __bss_stop,B6 - MVKH .S2 __bss_stop,B6 - SUB .L2 B6,B5,B6 ; bss size - - ;; Set the stack pointer - MVKL .S2 current_ksp,B0 - MVKH .S2 current_ksp,B0 - LDW .D2T2 *B0,B15 - - ;; clear bss - SHR .S2 B6,3,B0 ; number of dwords to clear - ZERO .L2 B13 - ZERO .L2 B12 -bss_loop: - BDEC .S2 bss_loop,B0 - NOP 3 - CMPLT .L2 B0,0,B1 - [!B1] STDW .D2T2 B13:B12,*B5++[1] - - NOP 4 - AND .D2 ~7,B15,B15 - - ;; Clear GIE and PGIE - MVC .S2 CSR,B2 - CLR .S2 B2,0,1,B2 - MVC .S2 B2,CSR - MVC .S2 TSR,B2 - CLR .S2 B2,0,1,B2 - MVC .S2 B2,TSR - MVC .S2 ITSR,B2 - CLR .S2 B2,0,1,B2 - MVC .S2 B2,ITSR - MVC .S2 NTSR,B2 - CLR .S2 B2,0,1,B2 - MVC .S2 B2,NTSR - - ;; pass DTB pointer to machine_init (or zero if none) - MVKL .S1 OF_DT_HEADER,A0 - MVKH .S1 OF_DT_HEADER,A0 - CMPEQ .L1 A10,A0,A0 - [A0] MV .S1X B10,A4 - [!A0] MVK .S1 0,A4 - -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 machine_init,A0 - MVKH .S1 machine_init,A0 - B .S2X A0 - ADDKPC .S2 0f,B3,4 -0: -#else - CALLP .S2 machine_init,B3 -#endif - - ;; Jump to Linux init -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 start_kernel,A0 - MVKH .S1 start_kernel,A0 - B .S2X A0 -#else - B .S2 start_kernel -#endif - NOP 5 -L1: BNOP .S2 L1,5 diff --git a/arch/c6x/kernel/irq.c b/arch/c6x/kernel/irq.c deleted file mode 100644 index e4c53d185b62..000000000000 --- a/arch/c6x/kernel/irq.c +++ /dev/null @@ -1,127 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (C) 2011-2012 Texas Instruments Incorporated - * - * This borrows heavily from powerpc version, which is: - * - * Derived from arch/i386/kernel/irq.c - * Copyright (C) 1992 Linus Torvalds - * Adapted from arch/i386 by Gary Thomas - * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) - * Updated and modified by Cort Dougan <cort@fsmlabs.com> - * Copyright (C) 1996-2001 Cort Dougan - * Adapted for Power Macintosh by Paul Mackerras - * Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au) - */ -#include <linux/slab.h> -#include <linux/seq_file.h> -#include <linux/radix-tree.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/of_irq.h> -#include <linux/interrupt.h> -#include <linux/kernel_stat.h> - -#include <asm/megamod-pic.h> -#include <asm/special_insns.h> - -unsigned long irq_err_count; - -static DEFINE_RAW_SPINLOCK(core_irq_lock); - -static void mask_core_irq(struct irq_data *data) -{ - unsigned int prio = data->hwirq; - - raw_spin_lock(&core_irq_lock); - and_creg(IER, ~(1 << prio)); - raw_spin_unlock(&core_irq_lock); -} - -static void unmask_core_irq(struct irq_data *data) -{ - unsigned int prio = data->hwirq; - - raw_spin_lock(&core_irq_lock); - or_creg(IER, 1 << prio); - raw_spin_unlock(&core_irq_lock); -} - -static struct irq_chip core_chip = { - .name = "core", - .irq_mask = mask_core_irq, - .irq_unmask = unmask_core_irq, -}; - -static int prio_to_virq[NR_PRIORITY_IRQS]; - -asmlinkage void c6x_do_IRQ(unsigned int prio, struct pt_regs *regs) -{ - struct pt_regs *old_regs = set_irq_regs(regs); - - irq_enter(); - - generic_handle_irq(prio_to_virq[prio]); - - irq_exit(); - - set_irq_regs(old_regs); -} - -static struct irq_domain *core_domain; - -static int core_domain_map(struct irq_domain *h, unsigned int virq, - irq_hw_number_t hw) -{ - if (hw < 4 || hw >= NR_PRIORITY_IRQS) - return -EINVAL; - - prio_to_virq[hw] = virq; - - irq_set_status_flags(virq, IRQ_LEVEL); - irq_set_chip_and_handler(virq, &core_chip, handle_level_irq); - return 0; -} - -static const struct irq_domain_ops core_domain_ops = { - .map = core_domain_map, - .xlate = irq_domain_xlate_onecell, -}; - -void __init init_IRQ(void) -{ - struct device_node *np; - - /* Mask all priority IRQs */ - and_creg(IER, ~0xfff0); - - np = of_find_compatible_node(NULL, NULL, "ti,c64x+core-pic"); - if (np != NULL) { - /* create the core host */ - core_domain = irq_domain_add_linear(np, NR_PRIORITY_IRQS, - &core_domain_ops, NULL); - if (core_domain) - irq_set_default_host(core_domain); - of_node_put(np); - } - - printk(KERN_INFO "Core interrupt controller initialized\n"); - - /* now we're ready for other SoC controllers */ - megamod_pic_init(); - - /* Clear all general IRQ flags */ - set_creg(ICR, 0xfff0); -} - -void ack_bad_irq(int irq) -{ - printk(KERN_ERR "IRQ: spurious interrupt %d\n", irq); - irq_err_count++; -} - -int arch_show_interrupts(struct seq_file *p, int prec) -{ - seq_printf(p, "%*s: %10lu\n", prec, "Err", irq_err_count); - return 0; -} diff --git a/arch/c6x/kernel/module.c b/arch/c6x/kernel/module.c deleted file mode 100644 index 09b4c6bfe877..000000000000 --- a/arch/c6x/kernel/module.c +++ /dev/null @@ -1,119 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2005, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Thomas Charleux (thomas.charleux@jaluna.com) - */ -#include <linux/moduleloader.h> -#include <linux/elf.h> -#include <linux/vmalloc.h> -#include <linux/kernel.h> - -static inline int fixup_pcr(u32 *ip, Elf32_Addr dest, u32 maskbits, int shift) -{ - u32 opcode; - long ep = (long)ip & ~31; - long delta = ((long)dest - ep) >> 2; - long mask = (1 << maskbits) - 1; - - if ((delta >> (maskbits - 1)) == 0 || - (delta >> (maskbits - 1)) == -1) { - opcode = *ip; - opcode &= ~(mask << shift); - opcode |= ((delta & mask) << shift); - *ip = opcode; - - pr_debug("REL PCR_S%d[%p] dest[%p] opcode[%08x]\n", - maskbits, ip, (void *)dest, opcode); - - return 0; - } - pr_err("PCR_S%d reloc %p -> %p out of range!\n", - maskbits, ip, (void *)dest); - - return -1; -} - -/* - * apply a RELA relocation - */ -int apply_relocate_add(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - Elf32_Rela *rel = (void *) sechdrs[relsec].sh_addr; - Elf_Sym *sym; - u32 *location, opcode; - unsigned int i; - Elf32_Addr v; - Elf_Addr offset = 0; - - pr_debug("Applying relocate section %u to %u with offset 0x%x\n", - relsec, sechdrs[relsec].sh_info, offset); - - for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { - /* This is where to make the change */ - location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rel[i].r_offset - offset; - - /* This is the symbol it is referring to. Note that all - undefined symbols have been resolved. */ - sym = (Elf_Sym *)sechdrs[symindex].sh_addr - + ELF32_R_SYM(rel[i].r_info); - - /* this is the adjustment to be made */ - v = sym->st_value + rel[i].r_addend; - - switch (ELF32_R_TYPE(rel[i].r_info)) { - case R_C6000_ABS32: - pr_debug("RELA ABS32: [%p] = 0x%x\n", location, v); - *location = v; - break; - case R_C6000_ABS16: - pr_debug("RELA ABS16: [%p] = 0x%x\n", location, v); - *(u16 *)location = v; - break; - case R_C6000_ABS8: - pr_debug("RELA ABS8: [%p] = 0x%x\n", location, v); - *(u8 *)location = v; - break; - case R_C6000_ABS_L16: - opcode = *location; - opcode &= ~0x7fff80; - opcode |= ((v & 0xffff) << 7); - pr_debug("RELA ABS_L16[%p] v[0x%x] opcode[0x%x]\n", - location, v, opcode); - *location = opcode; - break; - case R_C6000_ABS_H16: - opcode = *location; - opcode &= ~0x7fff80; - opcode |= ((v >> 9) & 0x7fff80); - pr_debug("RELA ABS_H16[%p] v[0x%x] opcode[0x%x]\n", - location, v, opcode); - *location = opcode; - break; - case R_C6000_PCR_S21: - if (fixup_pcr(location, v, 21, 7)) - return -ENOEXEC; - break; - case R_C6000_PCR_S12: - if (fixup_pcr(location, v, 12, 16)) - return -ENOEXEC; - break; - case R_C6000_PCR_S10: - if (fixup_pcr(location, v, 10, 13)) - return -ENOEXEC; - break; - default: - pr_err("module %s: Unknown RELA relocation: %u\n", - me->name, ELF32_R_TYPE(rel[i].r_info)); - return -ENOEXEC; - } - } - - return 0; -} diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c deleted file mode 100644 index cb9c8b63cddd..000000000000 --- a/arch/c6x/kernel/process.c +++ /dev/null @@ -1,151 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - */ -#include <linux/module.h> -#include <linux/unistd.h> -#include <linux/ptrace.h> -#include <linux/init_task.h> -#include <linux/tick.h> -#include <linux/mqueue.h> -#include <linux/syscalls.h> -#include <linux/reboot.h> -#include <linux/sched/task.h> -#include <linux/sched/task_stack.h> - -#include <asm/syscalls.h> - -/* hooks for board specific support */ -void (*c6x_restart)(void); -void (*c6x_halt)(void); - -extern asmlinkage void ret_from_fork(void); -extern asmlinkage void ret_from_kernel_thread(void); - -/* - * power off function, if any - */ -void (*pm_power_off)(void); -EXPORT_SYMBOL(pm_power_off); - -void arch_cpu_idle(void) -{ - unsigned long tmp; - - /* - * Put local_irq_enable and idle in same execute packet - * to make them atomic and avoid race to idle with - * interrupts enabled. - */ - asm volatile (" mvc .s2 CSR,%0\n" - " or .d2 1,%0,%0\n" - " mvc .s2 %0,CSR\n" - "|| idle\n" - : "=b"(tmp)); -} - -static void halt_loop(void) -{ - printk(KERN_EMERG "System Halted, OK to turn off power\n"); - local_irq_disable(); - while (1) - asm volatile("idle\n"); -} - -void machine_restart(char *__unused) -{ - if (c6x_restart) - c6x_restart(); - halt_loop(); -} - -void machine_halt(void) -{ - if (c6x_halt) - c6x_halt(); - halt_loop(); -} - -void machine_power_off(void) -{ - if (pm_power_off) - pm_power_off(); - halt_loop(); -} - -void flush_thread(void) -{ -} - -/* - * Do necessary setup to start up a newly executed thread. - */ -void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp) -{ - /* - * The binfmt loader will setup a "full" stack, but the C6X - * operates an "empty" stack. So we adjust the usp so that - * argc doesn't get destroyed if an interrupt is taken before - * it is read from the stack. - * - * NB: Library startup code needs to match this. - */ - usp -= 8; - - regs->pc = pc; - regs->sp = usp; - regs->tsr |= 0x40; /* set user mode */ - current->thread.usp = usp; -} - -/* - * Copy a new thread context in its stack. - */ -int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long ustk_size, - struct task_struct *p) -{ - struct pt_regs *childregs; - - childregs = task_pt_regs(p); - - if (unlikely(p->flags & PF_KTHREAD)) { - /* case of __kernel_thread: we return to supervisor space */ - memset(childregs, 0, sizeof(struct pt_regs)); - childregs->sp = (unsigned long)(childregs + 1); - p->thread.pc = (unsigned long) ret_from_kernel_thread; - childregs->a0 = usp; /* function */ - childregs->a1 = ustk_size; /* argument */ - } else { - /* Otherwise use the given stack */ - *childregs = *current_pt_regs(); - if (usp) - childregs->sp = usp; - p->thread.pc = (unsigned long) ret_from_fork; - } - - /* Set usp/ksp */ - p->thread.usp = childregs->sp; - thread_saved_ksp(p) = (unsigned long)childregs - 8; - p->thread.wchan = p->thread.pc; -#ifdef __DSBT__ - { - unsigned long dp; - - asm volatile ("mv .S2 b14,%0\n" : "=b"(dp)); - - thread_saved_dp(p) = dp; - if (usp == -1) - childregs->dp = dp; - } -#endif - return 0; -} - -unsigned long get_wchan(struct task_struct *p) -{ - return p->thread.wchan; -} diff --git a/arch/c6x/kernel/ptrace.c b/arch/c6x/kernel/ptrace.c deleted file mode 100644 index 67af1562da86..000000000000 --- a/arch/c6x/kernel/ptrace.c +++ /dev/null @@ -1,144 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - * - * Updated for 2.6.34: Mark Salter <msalter@redhat.com> - */ -#include <linux/ptrace.h> -#include <linux/tracehook.h> -#include <linux/regset.h> -#include <linux/elf.h> -#include <linux/sched/task_stack.h> - -#include <asm/cacheflush.h> - -#define PT_REG_SIZE (sizeof(struct pt_regs)) - -/* - * Called by kernel/ptrace.c when detaching. - */ -void ptrace_disable(struct task_struct *child) -{ - /* nothing to do */ -} - -/* - * Get a register number from live pt_regs for the specified task. - */ -static inline long get_reg(struct task_struct *task, int regno) -{ - long *addr = (long *)task_pt_regs(task); - - if (regno == PT_TSR || regno == PT_CSR) - return 0; - - return addr[regno]; -} - -/* - * Write contents of register REGNO in task TASK. - */ -static inline int put_reg(struct task_struct *task, - int regno, - unsigned long data) -{ - unsigned long *addr = (unsigned long *)task_pt_regs(task); - - if (regno != PT_TSR && regno != PT_CSR) - addr[regno] = data; - - return 0; -} - -/* regset get/set implementations */ - -static int gpr_get(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - struct pt_regs *regs = task_pt_regs(target); - - return user_regset_copyout(&pos, &count, &kbuf, &ubuf, - regs, - 0, sizeof(*regs)); -} - -enum c6x_regset { - REGSET_GPR, -}; - -static const struct user_regset c6x_regsets[] = { - [REGSET_GPR] = { - .core_note_type = NT_PRSTATUS, - .n = ELF_NGREG, - .size = sizeof(u32), - .align = sizeof(u32), - .get = gpr_get, - }, -}; - -static const struct user_regset_view user_c6x_native_view = { - .name = "tic6x", - .e_machine = EM_TI_C6000, - .regsets = c6x_regsets, - .n = ARRAY_SIZE(c6x_regsets), -}; - -const struct user_regset_view *task_user_regset_view(struct task_struct *task) -{ - return &user_c6x_native_view; -} - -/* - * Perform ptrace request - */ -long arch_ptrace(struct task_struct *child, long request, - unsigned long addr, unsigned long data) -{ - int ret = 0; - - switch (request) { - /* - * write the word at location addr. - */ - case PTRACE_POKETEXT: - ret = generic_ptrace_pokedata(child, addr, data); - if (ret == 0 && request == PTRACE_POKETEXT) - flush_icache_range(addr, addr + 4); - break; - 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(struct pt_regs *regs) -{ - if (tracehook_report_syscall_entry(regs)) - /* 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 - * regs->orig_a4 - */ - return ULONG_MAX; - - return regs->b0; -} - -/* - * handle tracing of system call exit - */ -asmlinkage void syscall_trace_exit(struct pt_regs *regs) -{ - tracehook_report_syscall_exit(regs, 0); -} diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c deleted file mode 100644 index 8ef35131f999..000000000000 --- a/arch/c6x/kernel/setup.c +++ /dev/null @@ -1,475 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - */ -#include <linux/dma-mapping.h> -#include <linux/memblock.h> -#include <linux/seq_file.h> -#include <linux/clkdev.h> -#include <linux/initrd.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/of_fdt.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/cache.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/clk.h> -#include <linux/cpu.h> -#include <linux/fs.h> -#include <linux/of.h> -#include <linux/console.h> -#include <linux/screen_info.h> - -#include <asm/sections.h> -#include <asm/div64.h> -#include <asm/setup.h> -#include <asm/dscr.h> -#include <asm/clock.h> -#include <asm/soc.h> -#include <asm/special_insns.h> - -static const char *c6x_soc_name; - -struct screen_info screen_info; - -int c6x_num_cores; -EXPORT_SYMBOL_GPL(c6x_num_cores); - -unsigned int c6x_silicon_rev; -EXPORT_SYMBOL_GPL(c6x_silicon_rev); - -/* - * Device status register. This holds information - * about device configuration needed by some drivers. - */ -unsigned int c6x_devstat; -EXPORT_SYMBOL_GPL(c6x_devstat); - -/* - * Some SoCs have fuse registers holding a unique MAC - * address. This is parsed out of the device tree with - * the resulting MAC being held here. - */ -unsigned char c6x_fuse_mac[6]; - -unsigned long memory_start; -unsigned long memory_end; -EXPORT_SYMBOL(memory_end); - -unsigned long ram_start; -unsigned long ram_end; - -/* Uncached memory for DMA consistent use (memdma=) */ -static unsigned long dma_start __initdata; -static unsigned long dma_size __initdata; - -struct cpuinfo_c6x { - const char *cpu_name; - const char *cpu_voltage; - const char *mmu; - const char *fpu; - char *cpu_rev; - unsigned int core_id; - char __cpu_rev[5]; -}; - -static DEFINE_PER_CPU(struct cpuinfo_c6x, cpu_data); - -unsigned int ticks_per_ns_scaled; -EXPORT_SYMBOL(ticks_per_ns_scaled); - -unsigned int c6x_core_freq; - -static void __init get_cpuinfo(void) -{ - unsigned cpu_id, rev_id, csr; - struct clk *coreclk = clk_get_sys(NULL, "core"); - unsigned long core_khz; - u64 tmp; - struct cpuinfo_c6x *p; - struct device_node *node; - - p = &per_cpu(cpu_data, smp_processor_id()); - - if (!IS_ERR(coreclk)) - c6x_core_freq = clk_get_rate(coreclk); - else { - printk(KERN_WARNING - "Cannot find core clock frequency. Using 700MHz\n"); - c6x_core_freq = 700000000; - } - - core_khz = c6x_core_freq / 1000; - - tmp = (uint64_t)core_khz << C6X_NDELAY_SCALE; - do_div(tmp, 1000000); - ticks_per_ns_scaled = tmp; - - csr = get_creg(CSR); - cpu_id = csr >> 24; - rev_id = (csr >> 16) & 0xff; - - p->mmu = "none"; - p->fpu = "none"; - p->cpu_voltage = "unknown"; - - switch (cpu_id) { - case 0: - p->cpu_name = "C67x"; - p->fpu = "yes"; - break; - case 2: - p->cpu_name = "C62x"; - break; - case 8: - p->cpu_name = "C64x"; - break; - case 12: - p->cpu_name = "C64x"; - break; - case 16: - p->cpu_name = "C64x+"; - p->cpu_voltage = "1.2"; - break; - case 21: - p->cpu_name = "C66X"; - p->cpu_voltage = "1.2"; - break; - default: - p->cpu_name = "unknown"; - break; - } - - if (cpu_id < 16) { - switch (rev_id) { - case 0x1: - if (cpu_id > 8) { - p->cpu_rev = "DM640/DM641/DM642/DM643"; - p->cpu_voltage = "1.2 - 1.4"; - } else { - p->cpu_rev = "C6201"; - p->cpu_voltage = "2.5"; - } - break; - case 0x2: - p->cpu_rev = "C6201B/C6202/C6211"; - p->cpu_voltage = "1.8"; - break; - case 0x3: - p->cpu_rev = "C6202B/C6203/C6204/C6205"; - p->cpu_voltage = "1.5"; - break; - case 0x201: - p->cpu_rev = "C6701 revision 0 (early CPU)"; - p->cpu_voltage = "1.8"; - break; - case 0x202: - p->cpu_rev = "C6701/C6711/C6712"; - p->cpu_voltage = "1.8"; - break; - case 0x801: - p->cpu_rev = "C64x"; - p->cpu_voltage = "1.5"; - break; - default: - p->cpu_rev = "unknown"; - } - } else { - p->cpu_rev = p->__cpu_rev; - snprintf(p->__cpu_rev, sizeof(p->__cpu_rev), "0x%x", cpu_id); - } - - p->core_id = get_coreid(); - - for_each_of_cpu_node(node) - ++c6x_num_cores; - - node = of_find_node_by_name(NULL, "soc"); - if (node) { - if (of_property_read_string(node, "model", &c6x_soc_name)) - c6x_soc_name = "unknown"; - of_node_put(node); - } else - c6x_soc_name = "unknown"; - - printk(KERN_INFO "CPU%d: %s rev %s, %s volts, %uMHz\n", - p->core_id, p->cpu_name, p->cpu_rev, - p->cpu_voltage, c6x_core_freq / 1000000); -} - -/* - * Early parsing of the command line - */ -static u32 mem_size __initdata; - -/* "mem=" parsing. */ -static int __init early_mem(char *p) -{ - if (!p) - return -EINVAL; - - mem_size = memparse(p, &p); - /* don't remove all of memory when handling "mem={invalid}" */ - if (mem_size == 0) - return -EINVAL; - - return 0; -} -early_param("mem", early_mem); - -/* "memdma=<size>[@<address>]" parsing. */ -static int __init early_memdma(char *p) -{ - if (!p) - return -EINVAL; - - dma_size = memparse(p, &p); - if (*p == '@') - dma_start = memparse(p, &p); - - return 0; -} -early_param("memdma", early_memdma); - -int __init c6x_add_memory(phys_addr_t start, unsigned long size) -{ - static int ram_found __initdata; - - /* We only handle one bank (the one with PAGE_OFFSET) for now */ - if (ram_found) - return -EINVAL; - - if (start > PAGE_OFFSET || PAGE_OFFSET >= (start + size)) - return 0; - - ram_start = start; - ram_end = start + size; - - ram_found = 1; - return 0; -} - -/* - * Do early machine setup and device tree parsing. This is called very - * early on the boot process. - */ -notrace void __init machine_init(unsigned long dt_ptr) -{ - void *dtb = __va(dt_ptr); - void *fdt = __dtb_start; - - /* interrupts must be masked */ - set_creg(IER, 2); - - /* - * Set the Interrupt Service Table (IST) to the beginning of the - * vector table. - */ - set_ist(_vectors_start); - - /* - * dtb is passed in from bootloader. - * fdt is linked in blob. - */ - if (dtb && dtb != fdt) - fdt = dtb; - - /* Do some early initialization based on the flat device tree */ - early_init_dt_scan(fdt); - - parse_early_param(); -} - -void __init setup_arch(char **cmdline_p) -{ - struct memblock_region *reg; - - printk(KERN_INFO "Initializing kernel\n"); - - /* Initialize command line */ - *cmdline_p = boot_command_line; - - memory_end = ram_end; - memory_end &= ~(PAGE_SIZE - 1); - - if (mem_size && (PAGE_OFFSET + PAGE_ALIGN(mem_size)) < memory_end) - memory_end = PAGE_OFFSET + PAGE_ALIGN(mem_size); - - /* add block that this kernel can use */ - memblock_add(PAGE_OFFSET, memory_end - PAGE_OFFSET); - - /* reserve kernel text/data/bss */ - memblock_reserve(PAGE_OFFSET, - PAGE_ALIGN((unsigned long)&_end - PAGE_OFFSET)); - - if (dma_size) { - /* align to cacheability granularity */ - dma_size = CACHE_REGION_END(dma_size); - - if (!dma_start) - dma_start = memory_end - dma_size; - - /* align to cacheability granularity */ - dma_start = CACHE_REGION_START(dma_start); - - /* reserve DMA memory taken from kernel memory */ - if (memblock_is_region_memory(dma_start, dma_size)) - memblock_reserve(dma_start, dma_size); - } - - memory_start = PAGE_ALIGN((unsigned int) &_end); - - printk(KERN_INFO "Memory Start=%08lx, Memory End=%08lx\n", - memory_start, memory_end); - -#ifdef CONFIG_BLK_DEV_INITRD - /* - * Reserve initrd memory if in kernel memory. - */ - if (initrd_start < initrd_end) - if (memblock_is_region_memory(initrd_start, - initrd_end - initrd_start)) - memblock_reserve(initrd_start, - initrd_end - initrd_start); -#endif - - init_mm.start_code = (unsigned long) &_stext; - init_mm.end_code = (unsigned long) &_etext; - init_mm.end_data = memory_start; - init_mm.brk = memory_start; - - unflatten_and_copy_device_tree(); - - c6x_cache_init(); - - /* Set the whole external memory as non-cacheable */ - disable_caching(ram_start, ram_end - 1); - - /* Set caching of external RAM used by Linux */ - for_each_memblock(memory, reg) - enable_caching(CACHE_REGION_START(reg->base), - CACHE_REGION_START(reg->base + reg->size - 1)); - -#ifdef CONFIG_BLK_DEV_INITRD - /* - * Enable caching for initrd which falls outside kernel memory. - */ - if (initrd_start < initrd_end) { - if (!memblock_is_region_memory(initrd_start, - initrd_end - initrd_start)) - enable_caching(CACHE_REGION_START(initrd_start), - CACHE_REGION_START(initrd_end - 1)); - } -#endif - - /* - * Disable caching for dma coherent memory taken from kernel memory. - */ - if (dma_size && memblock_is_region_memory(dma_start, dma_size)) - disable_caching(dma_start, - CACHE_REGION_START(dma_start + dma_size - 1)); - - /* Initialize the coherent memory allocator */ - coherent_mem_init(dma_start, dma_size); - - max_low_pfn = PFN_DOWN(memory_end); - min_low_pfn = PFN_UP(memory_start); - max_pfn = max_low_pfn; - max_mapnr = max_low_pfn - min_low_pfn; - - /* Get kmalloc into gear */ - paging_init(); - - /* - * Probe for Device State Configuration Registers. - * We have to do this early in case timer needs to be enabled - * through DSCR. - */ - dscr_probe(); - - /* We do this early for timer and core clock frequency */ - c64x_setup_clocks(); - - /* Get CPU info */ - get_cpuinfo(); - -#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) - conswitchp = &dummy_con; -#endif -} - -#define cpu_to_ptr(n) ((void *)((long)(n)+1)) -#define ptr_to_cpu(p) ((long)(p) - 1) - -static int show_cpuinfo(struct seq_file *m, void *v) -{ - int n = ptr_to_cpu(v); - struct cpuinfo_c6x *p = &per_cpu(cpu_data, n); - - if (n == 0) { - seq_printf(m, - "soc\t\t: %s\n" - "soc revision\t: 0x%x\n" - "soc cores\t: %d\n", - c6x_soc_name, c6x_silicon_rev, c6x_num_cores); - } - - seq_printf(m, - "\n" - "processor\t: %d\n" - "cpu\t\t: %s\n" - "core revision\t: %s\n" - "core voltage\t: %s\n" - "core id\t\t: %d\n" - "mmu\t\t: %s\n" - "fpu\t\t: %s\n" - "cpu MHz\t\t: %u\n" - "bogomips\t: %lu.%02lu\n\n", - n, - p->cpu_name, p->cpu_rev, p->cpu_voltage, - p->core_id, p->mmu, p->fpu, - (c6x_core_freq + 500000) / 1000000, - (loops_per_jiffy/(500000/HZ)), - (loops_per_jiffy/(5000/HZ))%100); - - return 0; -} - -static void *c_start(struct seq_file *m, loff_t *pos) -{ - return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL; -} -static void *c_next(struct seq_file *m, void *v, loff_t *pos) -{ - ++*pos; - return NULL; -} -static void c_stop(struct seq_file *m, void *v) -{ -} - -const struct seq_operations cpuinfo_op = { - c_start, - c_stop, - c_next, - show_cpuinfo -}; - -static struct cpu cpu_devices[NR_CPUS]; - -static int __init topology_init(void) -{ - int i; - - for_each_present_cpu(i) - register_cpu(&cpu_devices[i], i); - - return 0; -} - -subsys_initcall(topology_init); diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c deleted file mode 100644 index e456652facce..000000000000 --- a/arch/c6x/kernel/signal.c +++ /dev/null @@ -1,323 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - * - * Updated for 2.6.34: Mark Salter <msalter@redhat.com> - */ - -#include <linux/kernel.h> -#include <linux/uaccess.h> -#include <linux/syscalls.h> -#include <linux/tracehook.h> - -#include <asm/ucontext.h> -#include <asm/cacheflush.h> - - -/* - * Do a signal return, undo the signal stack. - */ - -#define RETCODE_SIZE (9 << 2) /* 9 instructions = 36 bytes */ - -struct rt_sigframe { - struct siginfo __user *pinfo; - void __user *puc; - struct siginfo info; - struct ucontext uc; - unsigned long retcode[RETCODE_SIZE >> 2]; -}; - -static int restore_sigcontext(struct pt_regs *regs, - struct sigcontext __user *sc) -{ - int err = 0; - - /* The access_ok check was done by caller, so use __get_user here */ -#define COPY(x) (err |= __get_user(regs->x, &sc->sc_##x)) - - COPY(sp); COPY(a4); COPY(b4); COPY(a6); COPY(b6); COPY(a8); COPY(b8); - COPY(a0); COPY(a1); COPY(a2); COPY(a3); COPY(a5); COPY(a7); COPY(a9); - COPY(b0); COPY(b1); COPY(b2); COPY(b3); COPY(b5); COPY(b7); COPY(b9); - - COPY(a16); COPY(a17); COPY(a18); COPY(a19); - COPY(a20); COPY(a21); COPY(a22); COPY(a23); - COPY(a24); COPY(a25); COPY(a26); COPY(a27); - COPY(a28); COPY(a29); COPY(a30); COPY(a31); - COPY(b16); COPY(b17); COPY(b18); COPY(b19); - COPY(b20); COPY(b21); COPY(b22); COPY(b23); - COPY(b24); COPY(b25); COPY(b26); COPY(b27); - COPY(b28); COPY(b29); COPY(b30); COPY(b31); - - COPY(csr); COPY(pc); - -#undef COPY - - return err; -} - -asmlinkage int do_rt_sigreturn(struct pt_regs *regs) -{ - struct rt_sigframe __user *frame; - sigset_t set; - - /* Always make any pending restarted system calls return -EINTR */ - current->restart_block.fn = do_no_restart_syscall; - - /* - * Since we stacked the signal on a dword boundary, - * 'sp' should be dword aligned here. If it's - * not, then the user is trying to mess with us. - */ - if (regs->sp & 7) - goto badframe; - - frame = (struct rt_sigframe __user *) ((unsigned long) regs->sp + 8); - - if (!access_ok(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(regs, &frame->uc.uc_mcontext)) - goto badframe; - - return regs->a4; - -badframe: - force_sig(SIGSEGV); - return 0; -} - -static int setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, - unsigned long mask) -{ - int err = 0; - - err |= __put_user(mask, &sc->sc_mask); - - /* The access_ok check was done by caller, so use __put_user here */ -#define COPY(x) (err |= __put_user(regs->x, &sc->sc_##x)) - - COPY(sp); COPY(a4); COPY(b4); COPY(a6); COPY(b6); COPY(a8); COPY(b8); - COPY(a0); COPY(a1); COPY(a2); COPY(a3); COPY(a5); COPY(a7); COPY(a9); - COPY(b0); COPY(b1); COPY(b2); COPY(b3); COPY(b5); COPY(b7); COPY(b9); - - COPY(a16); COPY(a17); COPY(a18); COPY(a19); - COPY(a20); COPY(a21); COPY(a22); COPY(a23); - COPY(a24); COPY(a25); COPY(a26); COPY(a27); - COPY(a28); COPY(a29); COPY(a30); COPY(a31); - COPY(b16); COPY(b17); COPY(b18); COPY(b19); - COPY(b20); COPY(b21); COPY(b22); COPY(b23); - COPY(b24); COPY(b25); COPY(b26); COPY(b27); - COPY(b28); COPY(b29); COPY(b30); COPY(b31); - - COPY(csr); COPY(pc); - -#undef COPY - - return err; -} - -static inline void __user *get_sigframe(struct ksignal *ksig, - struct pt_regs *regs, - unsigned long framesize) -{ - unsigned long sp = sigsp(regs->sp, ksig); - - /* - * No matter what happens, 'sp' must be dword - * aligned. Otherwise, nasty things will happen - */ - return (void __user *)((sp - framesize) & ~7); -} - -static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, - struct pt_regs *regs) -{ - struct rt_sigframe __user *frame; - unsigned long __user *retcode; - int err = 0; - - frame = get_sigframe(ksig, regs, sizeof(*frame)); - - if (!access_ok(frame, sizeof(*frame))) - return -EFAULT; - - err |= __put_user(&frame->info, &frame->pinfo); - err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, &ksig->info); - - /* Clear all the bits of the ucontext we don't use. */ - err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext)); - - err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); - err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); - - /* Set up to return from userspace */ - retcode = (unsigned long __user *) &frame->retcode; - - /* The access_ok check was done above, so use __put_user here */ -#define COPY(x) (err |= __put_user(x, retcode++)) - - COPY(0x0000002AUL | (__NR_rt_sigreturn << 7)); - /* MVK __NR_rt_sigreturn,B0 */ - COPY(0x10000000UL); /* SWE */ - COPY(0x00006000UL); /* NOP 4 */ - COPY(0x00006000UL); /* NOP 4 */ - COPY(0x00006000UL); /* NOP 4 */ - COPY(0x00006000UL); /* NOP 4 */ - COPY(0x00006000UL); /* NOP 4 */ - COPY(0x00006000UL); /* NOP 4 */ - COPY(0x00006000UL); /* NOP 4 */ - -#undef COPY - - if (err) - return -EFAULT; - - flush_icache_range((unsigned long) &frame->retcode, - (unsigned long) &frame->retcode + RETCODE_SIZE); - - retcode = (unsigned long __user *) &frame->retcode; - - /* Change user context to branch to signal handler */ - regs->sp = (unsigned long) frame - 8; - regs->b3 = (unsigned long) retcode; - regs->pc = (unsigned long) ksig->ka.sa.sa_handler; - - /* Give the signal number to the handler */ - regs->a4 = ksig->sig; - - /* - * For realtime signals we must also set the second and third - * arguments for the signal handler. - * -- Peter Maydell <pmaydell@chiark.greenend.org.uk> 2000-12-06 - */ - regs->b4 = (unsigned long)&frame->info; - regs->a6 = (unsigned long)&frame->uc; - - return 0; -} - -static inline void -handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) -{ - switch (regs->a4) { - case -ERESTARTNOHAND: - if (!has_handler) - goto do_restart; - regs->a4 = -EINTR; - break; - - case -ERESTARTSYS: - if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) { - regs->a4 = -EINTR; - break; - } - /* fallthrough */ - case -ERESTARTNOINTR: -do_restart: - regs->a4 = regs->orig_a4; - regs->pc -= 4; - break; - } -} - -/* - * handle the actual delivery of a signal to userspace - */ -static void handle_signal(struct ksignal *ksig, struct pt_regs *regs, - int syscall) -{ - int ret; - - /* Are we from a system call? */ - if (syscall) { - /* If so, check system call restarting.. */ - switch (regs->a4) { - case -ERESTART_RESTARTBLOCK: - case -ERESTARTNOHAND: - regs->a4 = -EINTR; - break; - - case -ERESTARTSYS: - if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { - regs->a4 = -EINTR; - break; - } - - /* fallthrough */ - case -ERESTARTNOINTR: - regs->a4 = regs->orig_a4; - regs->pc -= 4; - } - } - - /* Set up the stack frame */ - ret = setup_rt_frame(ksig, sigmask_to_save(), regs); - signal_setup_done(ret, ksig, 0); -} - -/* - * handle a potential signal - */ -static void do_signal(struct pt_regs *regs, int syscall) -{ - struct ksignal ksig; - - /* we want the common case to go fast, which is why we may in certain - * cases get here from kernel mode */ - if (!user_mode(regs)) - return; - - if (get_signal(&ksig)) { - handle_signal(&ksig, regs, syscall); - return; - } - - /* did we come from a system call? */ - if (syscall) { - /* restart the system call - no handlers present */ - switch (regs->a4) { - case -ERESTARTNOHAND: - case -ERESTARTSYS: - case -ERESTARTNOINTR: - regs->a4 = regs->orig_a4; - regs->pc -= 4; - break; - - case -ERESTART_RESTARTBLOCK: - regs->a4 = regs->orig_a4; - regs->b0 = __NR_restart_syscall; - regs->pc -= 4; - break; - } - } - - /* if there's no signal to deliver, we just put the saved sigmask - * back */ - restore_saved_sigmask(); -} - -/* - * notification of userspace execution resumption - * - triggered by current->work.notify_resume - */ -asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags, - int syscall) -{ - /* deal with pending signal delivery */ - if (thread_info_flags & (1 << TIF_SIGPENDING)) - do_signal(regs, syscall); - - if (thread_info_flags & (1 << TIF_NOTIFY_RESUME)) { - clear_thread_flag(TIF_NOTIFY_RESUME); - tracehook_notify_resume(regs); - } -} diff --git a/arch/c6x/kernel/soc.c b/arch/c6x/kernel/soc.c deleted file mode 100644 index 8362f9390e03..000000000000 --- a/arch/c6x/kernel/soc.c +++ /dev/null @@ -1,87 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Miscellaneous SoC-specific hooks. - * - * Copyright (C) 2011 Texas Instruments Incorporated - * Author: Mark Salter <msalter@redhat.com> - */ -#include <linux/module.h> -#include <linux/ctype.h> -#include <linux/etherdevice.h> -#include <asm/setup.h> -#include <asm/soc.h> - -struct soc_ops soc_ops; - -int soc_get_exception(void) -{ - if (!soc_ops.get_exception) - return -1; - return soc_ops.get_exception(); -} - -void soc_assert_event(unsigned int evt) -{ - if (soc_ops.assert_event) - soc_ops.assert_event(evt); -} - -static u8 cmdline_mac[6]; - -static int __init get_mac_addr_from_cmdline(char *str) -{ - int count, i, val; - - for (count = 0; count < 6 && *str; count++, str += 3) { - if (!isxdigit(str[0]) || !isxdigit(str[1])) - return 0; - if (str[2] != ((count < 5) ? ':' : '\0')) - return 0; - - for (i = 0, val = 0; i < 2; i++) { - val = val << 4; - val |= isdigit(str[i]) ? - str[i] - '0' : toupper(str[i]) - 'A' + 10; - } - cmdline_mac[count] = val; - } - return 1; -} -__setup("emac_addr=", get_mac_addr_from_cmdline); - -/* - * Setup the MAC address for SoC ethernet devices. - * - * Before calling this function, the ethernet driver will have - * initialized the addr with local-mac-address from the device - * tree (if found). Allow command line to override, but not - * the fused address. - */ -int soc_mac_addr(unsigned int index, u8 *addr) -{ - int i, have_dt_mac = 0, have_cmdline_mac = 0, have_fuse_mac = 0; - - for (i = 0; i < 6; i++) { - if (cmdline_mac[i]) - have_cmdline_mac = 1; - if (c6x_fuse_mac[i]) - have_fuse_mac = 1; - if (addr[i]) - have_dt_mac = 1; - } - - /* cmdline overrides all */ - if (have_cmdline_mac) - memcpy(addr, cmdline_mac, 6); - else if (!have_dt_mac) { - if (have_fuse_mac) - memcpy(addr, c6x_fuse_mac, 6); - else - eth_random_addr(addr); - } - - /* adjust for specific EMAC device */ - addr[5] += index * c6x_num_cores; - return 1; -} -EXPORT_SYMBOL_GPL(soc_mac_addr); diff --git a/arch/c6x/kernel/switch_to.S b/arch/c6x/kernel/switch_to.S deleted file mode 100644 index b7f9f607042e..000000000000 --- a/arch/c6x/kernel/switch_to.S +++ /dev/null @@ -1,71 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (C) 2011 Texas Instruments Incorporated - * Author: Mark Salter (msalter@redhat.com) - */ - -#include <linux/linkage.h> -#include <asm/asm-offsets.h> - -#define SP B15 - - /* - * void __switch_to(struct thread_info *prev, - * struct thread_info *next, - * struct task_struct *tsk) ; - */ -ENTRY(__switch_to) - LDDW .D2T2 *+B4(THREAD_B15_14),B7:B6 - || MV .L2X A4,B5 ; prev - || MV .L1X B4,A5 ; next - || MVC .S2 RILC,B1 - - STW .D2T2 B3,*+B5(THREAD_PC) - || STDW .D1T1 A13:A12,*+A4(THREAD_A13_12) - || MVC .S2 ILC,B0 - - LDW .D2T2 *+B4(THREAD_PC),B3 - || LDDW .D1T1 *+A5(THREAD_A13_12),A13:A12 - - STDW .D1T1 A11:A10,*+A4(THREAD_A11_10) - || STDW .D2T2 B1:B0,*+B5(THREAD_RICL_ICL) -#ifndef __DSBT__ - || MVKL .S2 current_ksp,B1 -#endif - - STDW .D2T2 B15:B14,*+B5(THREAD_B15_14) - || STDW .D1T1 A15:A14,*+A4(THREAD_A15_14) -#ifndef __DSBT__ - || MVKH .S2 current_ksp,B1 -#endif - - ;; Switch to next SP - MV .S2 B7,SP -#ifdef __DSBT__ - || STW .D2T2 B7,*+B14(current_ksp) -#else - || STW .D2T2 B7,*B1 - || MV .L2 B6,B14 -#endif - || LDDW .D1T1 *+A5(THREAD_RICL_ICL),A1:A0 - - STDW .D2T2 B11:B10,*+B5(THREAD_B11_10) - || LDDW .D1T1 *+A5(THREAD_A15_14),A15:A14 - - STDW .D2T2 B13:B12,*+B5(THREAD_B13_12) - || LDDW .D1T1 *+A5(THREAD_A11_10),A11:A10 - - B .S2 B3 ; return in next E1 - || LDDW .D2T2 *+B4(THREAD_B13_12),B13:B12 - - LDDW .D2T2 *+B4(THREAD_B11_10),B11:B10 - NOP - - MV .L2X A0,B0 - || MV .S1 A6,A4 - - MVC .S2 B0,ILC - || MV .L2X A1,B1 - - MVC .S2 B1,RILC -ENDPROC(__switch_to) diff --git a/arch/c6x/kernel/sys_c6x.c b/arch/c6x/kernel/sys_c6x.c deleted file mode 100644 index 600277f057cf..000000000000 --- a/arch/c6x/kernel/sys_c6x.c +++ /dev/null @@ -1,71 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - */ -#include <linux/module.h> -#include <linux/syscalls.h> -#include <linux/uaccess.h> - -#include <asm/syscalls.h> - -#ifdef CONFIG_ACCESS_CHECK -int _access_ok(unsigned long addr, unsigned long size) -{ - if (!size) - return 1; - - if (!addr || addr > (0xffffffffUL - (size - 1))) - goto _bad_access; - - if (uaccess_kernel()) - return 1; - - if (memory_start <= addr && (addr + size - 1) < memory_end) - return 1; - -_bad_access: - pr_debug("Bad access attempt: pid[%d] addr[%08lx] size[0x%lx]\n", - current->pid, addr, size); - return 0; -} -EXPORT_SYMBOL(_access_ok); -#endif - -/* sys_cache_sync -- sync caches over given range */ -asmlinkage int sys_cache_sync(unsigned long s, unsigned long e) -{ - L1D_cache_block_writeback_invalidate(s, e); - L1P_cache_block_invalidate(s, e); - - return 0; -} - -/* Provide the actual syscall number to call mapping. */ -#undef __SYSCALL -#define __SYSCALL(nr, call) [nr] = (call), - -/* - * Use trampolines - */ -#define sys_pread64 sys_pread_c6x -#define sys_pwrite64 sys_pwrite_c6x -#define sys_truncate64 sys_truncate64_c6x -#define sys_ftruncate64 sys_ftruncate64_c6x -#define sys_fadvise64 sys_fadvise64_c6x -#define sys_fadvise64_64 sys_fadvise64_64_c6x -#define sys_fallocate sys_fallocate_c6x - -/* Use sys_mmap_pgoff directly */ -#define sys_mmap2 sys_mmap_pgoff - -/* - * Note that we can't include <linux/unistd.h> here since the header - * guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well. - */ -void *sys_call_table[__NR_syscalls] = { - [0 ... __NR_syscalls-1] = sys_ni_syscall, -#include <asm/unistd.h> -}; diff --git a/arch/c6x/kernel/time.c b/arch/c6x/kernel/time.c deleted file mode 100644 index f3ec91a87f4f..000000000000 --- a/arch/c6x/kernel/time.c +++ /dev/null @@ -1,63 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - */ - -#include <linux/kernel.h> -#include <linux/clocksource.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/param.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/interrupt.h> -#include <linux/timex.h> -#include <linux/profile.h> - -#include <asm/special_insns.h> -#include <asm/timer64.h> - -static u32 sched_clock_multiplier; -#define SCHED_CLOCK_SHIFT 16 - -static u64 tsc_read(struct clocksource *cs) -{ - return get_cycles(); -} - -static struct clocksource clocksource_tsc = { - .name = "timestamp", - .rating = 300, - .read = tsc_read, - .mask = CLOCKSOURCE_MASK(64), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -/* - * scheduler clock - returns current time in nanoseconds. - */ -u64 sched_clock(void) -{ - u64 tsc = get_cycles(); - - return (tsc * sched_clock_multiplier) >> SCHED_CLOCK_SHIFT; -} - -void __init time_init(void) -{ - u64 tmp = (u64)NSEC_PER_SEC << SCHED_CLOCK_SHIFT; - - do_div(tmp, c6x_core_freq); - sched_clock_multiplier = tmp; - - clocksource_register_hz(&clocksource_tsc, c6x_core_freq); - - /* write anything into TSCL to enable counting */ - set_creg(TSCL, 0); - - /* probe for timer64 event timer */ - timer64_init(); -} diff --git a/arch/c6x/kernel/traps.c b/arch/c6x/kernel/traps.c deleted file mode 100644 index ec61034fdf56..000000000000 --- a/arch/c6x/kernel/traps.c +++ /dev/null @@ -1,407 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - */ -#include <linux/module.h> -#include <linux/ptrace.h> -#include <linux/sched/debug.h> -#include <linux/bug.h> - -#include <asm/soc.h> -#include <asm/special_insns.h> -#include <asm/traps.h> - -int (*c6x_nmi_handler)(struct pt_regs *regs); - -void __init trap_init(void) -{ - ack_exception(EXCEPT_TYPE_NXF); - ack_exception(EXCEPT_TYPE_EXC); - ack_exception(EXCEPT_TYPE_IXF); - ack_exception(EXCEPT_TYPE_SXF); - enable_exception(); -} - -void show_regs(struct pt_regs *regs) -{ - pr_err("\n"); - show_regs_print_info(KERN_ERR); - pr_err("PC: %08lx SP: %08lx\n", regs->pc, regs->sp); - pr_err("Status: %08lx ORIG_A4: %08lx\n", regs->csr, regs->orig_a4); - pr_err("A0: %08lx B0: %08lx\n", regs->a0, regs->b0); - pr_err("A1: %08lx B1: %08lx\n", regs->a1, regs->b1); - pr_err("A2: %08lx B2: %08lx\n", regs->a2, regs->b2); - pr_err("A3: %08lx B3: %08lx\n", regs->a3, regs->b3); - pr_err("A4: %08lx B4: %08lx\n", regs->a4, regs->b4); - pr_err("A5: %08lx B5: %08lx\n", regs->a5, regs->b5); - pr_err("A6: %08lx B6: %08lx\n", regs->a6, regs->b6); - pr_err("A7: %08lx B7: %08lx\n", regs->a7, regs->b7); - pr_err("A8: %08lx B8: %08lx\n", regs->a8, regs->b8); - pr_err("A9: %08lx B9: %08lx\n", regs->a9, regs->b9); - pr_err("A10: %08lx B10: %08lx\n", regs->a10, regs->b10); - pr_err("A11: %08lx B11: %08lx\n", regs->a11, regs->b11); - pr_err("A12: %08lx B12: %08lx\n", regs->a12, regs->b12); - pr_err("A13: %08lx B13: %08lx\n", regs->a13, regs->b13); - pr_err("A14: %08lx B14: %08lx\n", regs->a14, regs->dp); - pr_err("A15: %08lx B15: %08lx\n", regs->a15, regs->sp); - pr_err("A16: %08lx B16: %08lx\n", regs->a16, regs->b16); - pr_err("A17: %08lx B17: %08lx\n", regs->a17, regs->b17); - pr_err("A18: %08lx B18: %08lx\n", regs->a18, regs->b18); - pr_err("A19: %08lx B19: %08lx\n", regs->a19, regs->b19); - pr_err("A20: %08lx B20: %08lx\n", regs->a20, regs->b20); - pr_err("A21: %08lx B21: %08lx\n", regs->a21, regs->b21); - pr_err("A22: %08lx B22: %08lx\n", regs->a22, regs->b22); - pr_err("A23: %08lx B23: %08lx\n", regs->a23, regs->b23); - pr_err("A24: %08lx B24: %08lx\n", regs->a24, regs->b24); - pr_err("A25: %08lx B25: %08lx\n", regs->a25, regs->b25); - pr_err("A26: %08lx B26: %08lx\n", regs->a26, regs->b26); - pr_err("A27: %08lx B27: %08lx\n", regs->a27, regs->b27); - pr_err("A28: %08lx B28: %08lx\n", regs->a28, regs->b28); - pr_err("A29: %08lx B29: %08lx\n", regs->a29, regs->b29); - pr_err("A30: %08lx B30: %08lx\n", regs->a30, regs->b30); - pr_err("A31: %08lx B31: %08lx\n", regs->a31, regs->b31); -} - -void die(char *str, struct pt_regs *fp, int nr) -{ - console_verbose(); - pr_err("%s: %08x\n", str, nr); - show_regs(fp); - - pr_err("Process %s (pid: %d, stackpage=%08lx)\n", - current->comm, current->pid, (PAGE_SIZE + - (unsigned long) current)); - - dump_stack(); - while (1) - ; -} - -static void die_if_kernel(char *str, struct pt_regs *fp, int nr) -{ - if (user_mode(fp)) - return; - - die(str, fp, nr); -} - - -/* Internal exceptions */ -static struct exception_info iexcept_table[10] = { - { "Oops - instruction fetch", SIGBUS, BUS_ADRERR }, - { "Oops - fetch packet", SIGBUS, BUS_ADRERR }, - { "Oops - execute packet", SIGILL, ILL_ILLOPC }, - { "Oops - undefined instruction", SIGILL, ILL_ILLOPC }, - { "Oops - resource conflict", SIGILL, ILL_ILLOPC }, - { "Oops - resource access", SIGILL, ILL_PRVREG }, - { "Oops - privilege", SIGILL, ILL_PRVOPC }, - { "Oops - loops buffer", SIGILL, ILL_ILLOPC }, - { "Oops - software exception", SIGILL, ILL_ILLTRP }, - { "Oops - unknown exception", SIGILL, ILL_ILLOPC } -}; - -/* External exceptions */ -static struct exception_info eexcept_table[128] = { - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - external exception", SIGBUS, BUS_ADRERR }, - { "Oops - CPU memory protection fault", SIGSEGV, SEGV_ACCERR }, - { "Oops - CPU memory protection fault in L1P", SIGSEGV, SEGV_ACCERR }, - { "Oops - DMA memory protection fault in L1P", SIGSEGV, SEGV_ACCERR }, - { "Oops - CPU memory protection fault in L1D", SIGSEGV, SEGV_ACCERR }, - { "Oops - DMA memory protection fault in L1D", SIGSEGV, SEGV_ACCERR }, - { "Oops - CPU memory protection fault in L2", SIGSEGV, SEGV_ACCERR }, - { "Oops - DMA memory protection fault in L2", SIGSEGV, SEGV_ACCERR }, - { "Oops - EMC CPU memory protection fault", SIGSEGV, SEGV_ACCERR }, - { "Oops - EMC bus error", SIGBUS, BUS_ADRERR } -}; - -static void do_trap(struct exception_info *except_info, struct pt_regs *regs) -{ - unsigned long addr = instruction_pointer(regs); - - if (except_info->code != TRAP_BRKPT) - pr_err("TRAP: %s PC[0x%lx] signo[%d] code[%d]\n", - except_info->kernel_str, regs->pc, - except_info->signo, except_info->code); - - die_if_kernel(except_info->kernel_str, regs, addr); - - force_sig_fault(except_info->signo, except_info->code, - (void __user *)addr); -} - -/* - * Process an internal exception (non maskable) - */ -static int process_iexcept(struct pt_regs *regs) -{ - unsigned int iexcept_report = get_iexcept(); - unsigned int iexcept_num; - - ack_exception(EXCEPT_TYPE_IXF); - - pr_err("IEXCEPT: PC[0x%lx]\n", regs->pc); - - while (iexcept_report) { - iexcept_num = __ffs(iexcept_report); - iexcept_report &= ~(1 << iexcept_num); - set_iexcept(iexcept_report); - if (*(unsigned int *)regs->pc == BKPT_OPCODE) { - /* This is a breakpoint */ - struct exception_info bkpt_exception = { - "Oops - undefined instruction", - SIGTRAP, TRAP_BRKPT - }; - do_trap(&bkpt_exception, regs); - iexcept_report &= ~(0xFF); - set_iexcept(iexcept_report); - continue; - } - - do_trap(&iexcept_table[iexcept_num], regs); - } - return 0; -} - -/* - * Process an external exception (maskable) - */ -static void process_eexcept(struct pt_regs *regs) -{ - int evt; - - pr_err("EEXCEPT: PC[0x%lx]\n", regs->pc); - - while ((evt = soc_get_exception()) >= 0) - do_trap(&eexcept_table[evt], regs); - - ack_exception(EXCEPT_TYPE_EXC); -} - -/* - * Main exception processing - */ -asmlinkage int process_exception(struct pt_regs *regs) -{ - unsigned int type; - unsigned int type_num; - unsigned int ie_num = 9; /* default is unknown exception */ - - while ((type = get_except_type()) != 0) { - type_num = fls(type) - 1; - - switch (type_num) { - case EXCEPT_TYPE_NXF: - ack_exception(EXCEPT_TYPE_NXF); - if (c6x_nmi_handler) - (c6x_nmi_handler)(regs); - else - pr_alert("NMI interrupt!\n"); - break; - - case EXCEPT_TYPE_IXF: - if (process_iexcept(regs)) - return 1; - break; - - case EXCEPT_TYPE_EXC: - process_eexcept(regs); - break; - - case EXCEPT_TYPE_SXF: - ie_num = 8; - default: - ack_exception(type_num); - do_trap(&iexcept_table[ie_num], regs); - break; - } - } - return 0; -} - -static int kstack_depth_to_print = 48; - -static void show_trace(unsigned long *stack, unsigned long *endstack) -{ - unsigned long addr; - int i; - - pr_debug("Call trace:"); - i = 0; - while (stack + 1 <= endstack) { - addr = *stack++; - /* - * If the address is either in the text segment of the - * kernel, or in the region which contains vmalloc'ed - * memory, it *may* be the address of a calling - * routine; if so, print it so that someone tracing - * down the cause of the crash will be able to figure - * out the call path that was taken. - */ - if (__kernel_text_address(addr)) { -#ifndef CONFIG_KALLSYMS - if (i % 5 == 0) - pr_debug("\n "); -#endif - pr_debug(" [<%08lx>] %pS\n", addr, (void *)addr); - i++; - } - } - pr_debug("\n"); -} - -void show_stack(struct task_struct *task, unsigned long *stack) -{ - unsigned long *p, *endstack; - int i; - - if (!stack) { - if (task && task != current) - /* We know this is a kernel stack, - so this is the start/end */ - stack = (unsigned long *)thread_saved_ksp(task); - else - stack = (unsigned long *)&stack; - } - endstack = (unsigned long *)(((unsigned long)stack + THREAD_SIZE - 1) - & -THREAD_SIZE); - - pr_debug("Stack from %08lx:", (unsigned long)stack); - for (i = 0, p = stack; i < kstack_depth_to_print; i++) { - if (p + 1 > endstack) - break; - if (i % 8 == 0) - pr_cont("\n "); - pr_cont(" %08lx", *p++); - } - pr_cont("\n"); - show_trace(stack, endstack); -} - -int is_valid_bugaddr(unsigned long addr) -{ - return __kernel_text_address(addr); -} diff --git a/arch/c6x/kernel/vectors.S b/arch/c6x/kernel/vectors.S deleted file mode 100644 index ad3dc006a6d3..000000000000 --- a/arch/c6x/kernel/vectors.S +++ /dev/null @@ -1,78 +0,0 @@ -; SPDX-License-Identifier: GPL-2.0-only -; -; Port on Texas Instruments TMS320C6x architecture -; -; Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated -; Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) -; -; This section handles all the interrupt vector routines. -; At RESET the processor sets up the DRAM timing parameters and -; branches to the label _c_int00 which handles initialization for the C code. -; - -#define ALIGNMENT 5 - - .macro IRQVEC name, handler - .align ALIGNMENT - .hidden \name - .global \name -\name: -#ifdef CONFIG_C6X_BIG_KERNEL - STW .D2T1 A0,*B15--[2] - || MVKL .S1 \handler,A0 - MVKH .S1 \handler,A0 - B .S2X A0 - LDW .D2T1 *++B15[2],A0 - NOP 4 - NOP - NOP - .endm -#else /* CONFIG_C6X_BIG_KERNEL */ - B .S2 \handler - NOP - NOP - NOP - NOP - NOP - NOP - NOP - .endm -#endif /* CONFIG_C6X_BIG_KERNEL */ - - .sect ".vectors","ax" - .align ALIGNMENT - .global RESET - .hidden RESET -RESET: -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 _c_int00,A0 ; branch to _c_int00 - MVKH .S1 _c_int00,A0 - B .S2X A0 -#else - B .S2 _c_int00 - NOP - NOP -#endif - NOP - NOP - NOP - NOP - NOP - - - IRQVEC NMI,_nmi_handler ; NMI interrupt - IRQVEC AINT,_bad_interrupt ; reserved - IRQVEC MSGINT,_bad_interrupt ; reserved - - IRQVEC INT4,_int4_handler - IRQVEC INT5,_int5_handler - IRQVEC INT6,_int6_handler - IRQVEC INT7,_int7_handler - IRQVEC INT8,_int8_handler - IRQVEC INT9,_int9_handler - IRQVEC INT10,_int10_handler - IRQVEC INT11,_int11_handler - IRQVEC INT12,_int12_handler - IRQVEC INT13,_int13_handler - IRQVEC INT14,_int14_handler - IRQVEC INT15,_int15_handler diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S deleted file mode 100644 index ac99ba0864bf..000000000000 --- a/arch/c6x/kernel/vmlinux.lds.S +++ /dev/null @@ -1,151 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * ld script for the c6x kernel - * - * Copyright (C) 2010, 2011 Texas Instruments Incorporated - * Mark Salter <msalter@redhat.com> - */ - -#define RO_EXCEPTION_TABLE_ALIGN 16 - -#include <asm-generic/vmlinux.lds.h> -#include <asm/thread_info.h> -#include <asm/page.h> - -ENTRY(_c_int00) - -#if defined(CONFIG_CPU_BIG_ENDIAN) -jiffies = jiffies_64 + 4; -#else -jiffies = jiffies_64; -#endif - -#define READONLY_SEGMENT_START \ - . = PAGE_OFFSET; -#define READWRITE_SEGMENT_START \ - . = ALIGN(128); \ - _data_lma = .; - -SECTIONS -{ - /* - * Start kernel read only segment - */ - READONLY_SEGMENT_START - - .vectors : - { - _vectors_start = .; - *(.vectors) - . = ALIGN(0x400); - _vectors_end = .; - } - - /* - * This section contains data which may be shared with other - * cores. It needs to be a fixed offset from PAGE_OFFSET - * regardless of kernel configuration. - */ - .virtio_ipc_dev : - { - *(.virtio_ipc_dev) - } - - . = ALIGN(PAGE_SIZE); - __init_begin = .; - .init : - { - _sinittext = .; - HEAD_TEXT - INIT_TEXT - _einittext = .; - } - - INIT_DATA_SECTION(16) - - PERCPU_SECTION(128) - - . = ALIGN(PAGE_SIZE); - __init_end = .; - - .text : - { - _text = .; - _stext = .; - TEXT_TEXT - SCHED_TEXT - CPUIDLE_TEXT - LOCK_TEXT - IRQENTRY_TEXT - SOFTIRQENTRY_TEXT - KPROBES_TEXT - *(.fixup) - *(.gnu.warning) - } - - RO_DATA(PAGE_SIZE) - .const : - { - *(.const .const.* .gnu.linkonce.r.*) - *(.switch) - } - - _etext = .; - - /* - * Start kernel read-write segment. - */ - READWRITE_SEGMENT_START - _sdata = .; - - .fardata : AT(ADDR(.fardata) - LOAD_OFFSET) - { - INIT_TASK_DATA(THREAD_SIZE) - NOSAVE_DATA - PAGE_ALIGNED_DATA(PAGE_SIZE) - CACHELINE_ALIGNED_DATA(128) - READ_MOSTLY_DATA(128) - DATA_DATA - CONSTRUCTORS - *(.data1) - *(.fardata .fardata.*) - *(.data.debug_bpt) - } - - .neardata ALIGN(8) : AT(ADDR(.neardata) - LOAD_OFFSET) - { - *(.neardata2 .neardata2.* .gnu.linkonce.s2.*) - *(.neardata .neardata.* .gnu.linkonce.s.*) - . = ALIGN(8); - } - - BUG_TABLE - - _edata = .; - - __bss_start = .; - SBSS(8) - BSS(8) - .far : - { - . = ALIGN(8); - *(.dynfar) - *(.far .far.* .gnu.linkonce.b.*) - . = ALIGN(8); - } - __bss_stop = .; - - _end = .; - - DWARF_DEBUG - - /DISCARD/ : - { - EXIT_TEXT - EXIT_DATA - EXIT_CALL - *(.discard) - *(.discard.*) - *(.interp) - } -} |