diff options
Diffstat (limited to 'arch/arm/mm/proc-feroceon.S')
| -rw-r--r-- | arch/arm/mm/proc-feroceon.S | 194 |
1 files changed, 99 insertions, 95 deletions
diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index 4106b09e0c29..7f08d06c9625 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -1,30 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * linux/arch/arm/mm/proc-feroceon.S: MMU functions for Feroceon * * Heavily based on proc-arm926.S * Maintainer: Assaf Hoffman <hoffman@marvell.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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> +#include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> #include <asm/pgtable-hwdef.h> -#include <asm/pgtable.h> #include <asm/page.h> #include <asm/ptrace.h> #include "proc-macros.S" @@ -56,7 +44,7 @@ __cache_params: /* * cpu_feroceon_proc_init() */ -ENTRY(cpu_feroceon_proc_init) +SYM_TYPED_FUNC_START(cpu_feroceon_proc_init) mrc p15, 0, r0, c0, c0, 1 @ read cache type register ldr r1, __cache_params mov r2, #(16 << 5) @@ -69,12 +57,17 @@ ENTRY(cpu_feroceon_proc_init) movne r2, r2, lsr #2 @ turned into # of sets sub r2, r2, #(1 << 5) stmia r1, {r2, r3} - mov pc, lr +#ifdef CONFIG_VFP + mov r1, #1 @ disable quirky VFP + str_l r1, VFP_arch_feroceon, r2 +#endif + ret lr +SYM_FUNC_END(cpu_feroceon_proc_init) /* * cpu_feroceon_proc_fin() */ -ENTRY(cpu_feroceon_proc_fin) +SYM_TYPED_FUNC_START(cpu_feroceon_proc_fin) #if defined(CONFIG_CACHE_FEROCEON_L2) && \ !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r0, #0 @@ -86,7 +79,8 @@ ENTRY(cpu_feroceon_proc_fin) bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - mov pc, lr + ret lr +SYM_FUNC_END(cpu_feroceon_proc_fin) /* * cpu_feroceon_reset(loc) @@ -99,7 +93,7 @@ ENTRY(cpu_feroceon_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_feroceon_reset) +SYM_TYPED_FUNC_START(cpu_feroceon_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -110,8 +104,8 @@ ENTRY(cpu_feroceon_reset) bic ip, ip, #0x000f @ ............wcam bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register - mov pc, r0 -ENDPROC(cpu_feroceon_reset) + ret r0 +SYM_FUNC_END(cpu_feroceon_reset) .popsection /* @@ -120,22 +114,23 @@ ENDPROC(cpu_feroceon_reset) * Called with IRQs disabled */ .align 5 -ENTRY(cpu_feroceon_do_idle) +SYM_TYPED_FUNC_START(cpu_feroceon_do_idle) mov r0, #0 mcr p15, 0, r0, c7, c10, 4 @ Drain write buffer mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt - mov pc, lr + ret lr +SYM_FUNC_END(cpu_feroceon_do_idle) /* * flush_icache_all() * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(feroceon_flush_icache_all) +SYM_TYPED_FUNC_START(feroceon_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache - mov pc, lr -ENDPROC(feroceon_flush_icache_all) + ret lr +SYM_FUNC_END(feroceon_flush_icache_all) /* * flush_user_cache_all() @@ -144,15 +139,14 @@ ENDPROC(feroceon_flush_icache_all) * address space. */ .align 5 -ENTRY(feroceon_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(feroceon_flush_user_cache_all, feroceon_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(feroceon_flush_kern_cache_all) +SYM_TYPED_FUNC_START(feroceon_flush_kern_cache_all) mov r2, #VM_EXEC __flush_whole_cache: @@ -169,7 +163,8 @@ __flush_whole_cache: mov ip, #0 mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB - mov pc, lr + ret lr +SYM_FUNC_END(feroceon_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -182,7 +177,7 @@ __flush_whole_cache: * - flags - vm_flags describing address space */ .align 5 -ENTRY(feroceon_flush_user_cache_range) +SYM_TYPED_FUNC_START(feroceon_flush_user_cache_range) sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT bgt __flush_whole_cache @@ -198,7 +193,8 @@ ENTRY(feroceon_flush_user_cache_range) tst r2, #VM_EXEC mov ip, #0 mcrne p15, 0, ip, c7, c10, 4 @ drain WB - mov pc, lr + ret lr +SYM_FUNC_END(feroceon_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -211,8 +207,11 @@ ENTRY(feroceon_flush_user_cache_range) * - end - virtual end address */ .align 5 -ENTRY(feroceon_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(feroceon_coherent_kern_range) +#ifdef CONFIG_CFI /* Fallthrough if !CFI */ + b feroceon_coherent_user_range +#endif +SYM_FUNC_END(feroceon_coherent_kern_range) /* * coherent_user_range(start, end) @@ -224,7 +223,7 @@ ENTRY(feroceon_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(feroceon_coherent_user_range) +SYM_TYPED_FUNC_START(feroceon_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -233,7 +232,8 @@ ENTRY(feroceon_coherent_user_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 - mov pc, lr + ret lr +SYM_FUNC_END(feroceon_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -245,7 +245,7 @@ ENTRY(feroceon_coherent_user_range) * - size - region size */ .align 5 -ENTRY(feroceon_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(feroceon_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -254,10 +254,11 @@ ENTRY(feroceon_flush_kern_dcache_area) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB - mov pc, lr + ret lr +SYM_FUNC_END(feroceon_flush_kern_dcache_area) .align 5 -ENTRY(feroceon_range_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(feroceon_range_flush_kern_dcache_area) mrs r2, cpsr add r1, r0, #PAGE_SZ - CACHE_DLINESIZE @ top addr is inclusive orr r3, r2, #PSR_I_BIT @@ -268,7 +269,8 @@ ENTRY(feroceon_range_flush_kern_dcache_area) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB - mov pc, lr + ret lr +SYM_FUNC_END(feroceon_range_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -295,7 +297,7 @@ feroceon_dma_inv_range: cmp r0, r1 blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB - mov pc, lr + ret lr .align 5 feroceon_range_dma_inv_range: @@ -311,7 +313,7 @@ feroceon_range_dma_inv_range: mcr p15, 5, r0, c15, c14, 0 @ D inv range start mcr p15, 5, r1, c15, c14, 1 @ D inv range top msr cpsr_c, r2 @ restore interrupts - mov pc, lr + ret lr /* * dma_clean_range(start, end) @@ -331,7 +333,7 @@ feroceon_dma_clean_range: cmp r0, r1 blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB - mov pc, lr + ret lr .align 5 feroceon_range_dma_clean_range: @@ -344,7 +346,7 @@ feroceon_range_dma_clean_range: mcr p15, 5, r1, c15, c13, 1 @ D clean range top msr cpsr_c, r2 @ restore interrupts mcr p15, 0, r0, c7, c10, 4 @ drain WB - mov pc, lr + ret lr /* * dma_flush_range(start, end) @@ -355,17 +357,18 @@ feroceon_range_dma_clean_range: * - end - virtual end address */ .align 5 -ENTRY(feroceon_dma_flush_range) +SYM_TYPED_FUNC_START(feroceon_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE cmp r0, r1 blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB - mov pc, lr + ret lr +SYM_FUNC_END(feroceon_dma_flush_range) .align 5 -ENTRY(feroceon_range_dma_flush_range) +SYM_TYPED_FUNC_START(feroceon_range_dma_flush_range) mrs r2, cpsr cmp r1, r0 subne r1, r1, #1 @ top address is inclusive @@ -375,7 +378,8 @@ ENTRY(feroceon_range_dma_flush_range) mcr p15, 5, r1, c15, c15, 1 @ D clean/inv range top msr cpsr_c, r2 @ restore interrupts mcr p15, 0, r0, c7, c10, 4 @ drain WB - mov pc, lr + ret lr +SYM_FUNC_END(feroceon_range_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -383,13 +387,13 @@ ENTRY(feroceon_range_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(feroceon_dma_map_area) +SYM_TYPED_FUNC_START(feroceon_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq feroceon_dma_clean_range bcs feroceon_dma_inv_range b feroceon_dma_flush_range -ENDPROC(feroceon_dma_map_area) +SYM_FUNC_END(feroceon_dma_map_area) /* * dma_map_area(start, size, dir) @@ -397,13 +401,13 @@ ENDPROC(feroceon_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(feroceon_range_dma_map_area) +SYM_TYPED_FUNC_START(feroceon_range_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq feroceon_range_dma_clean_range bcs feroceon_range_dma_inv_range b feroceon_range_dma_flush_range -ENDPROC(feroceon_range_dma_map_area) +SYM_FUNC_END(feroceon_range_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -411,39 +415,12 @@ ENDPROC(feroceon_range_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(feroceon_dma_unmap_area) - mov pc, lr -ENDPROC(feroceon_dma_unmap_area) - - .globl feroceon_flush_kern_cache_louis - .equ feroceon_flush_kern_cache_louis, feroceon_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions feroceon - -.macro range_alias basename - .globl feroceon_range_\basename - .type feroceon_range_\basename , %function - .equ feroceon_range_\basename , feroceon_\basename -.endm - -/* - * Most of the cache functions are unchanged for this case. - * Export suitable alias symbols for the unchanged functions: - */ - range_alias flush_icache_all - range_alias flush_user_cache_all - range_alias flush_kern_cache_all - range_alias flush_kern_cache_louis - range_alias flush_user_cache_range - range_alias coherent_kern_range - range_alias coherent_user_range - range_alias dma_unmap_area - - define_cache_functions feroceon_range +SYM_TYPED_FUNC_START(feroceon_dma_unmap_area) + ret lr +SYM_FUNC_END(feroceon_dma_unmap_area) .align 5 -ENTRY(cpu_feroceon_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_feroceon_dcache_clean_area) #if defined(CONFIG_CACHE_FEROCEON_L2) && \ !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r2, r0 @@ -461,7 +438,8 @@ ENTRY(cpu_feroceon_dcache_clean_area) bhi 1b #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB - mov pc, lr + ret lr +SYM_FUNC_END(cpu_feroceon_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -473,7 +451,7 @@ ENTRY(cpu_feroceon_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_feroceon_switch_mm) +SYM_TYPED_FUNC_START(cpu_feroceon_switch_mm) #ifdef CONFIG_MMU /* * Note: we wish to call __flush_whole_cache but we need to preserve @@ -490,10 +468,11 @@ ENTRY(cpu_feroceon_switch_mm) mcr p15, 0, r0, c2, c0, 0 @ load page table pointer mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs - mov pc, r2 + ret r2 #else - mov pc, lr + ret lr #endif +SYM_FUNC_END(cpu_feroceon_switch_mm) /* * cpu_feroceon_set_pte_ext(ptep, pte, ext) @@ -501,7 +480,7 @@ ENTRY(cpu_feroceon_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_feroceon_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_feroceon_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext wc_disable=0 mov r0, r0 @@ -512,9 +491,34 @@ ENTRY(cpu_feroceon_set_pte_ext) #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif - mov pc, lr - - __CPUINIT + ret lr +SYM_FUNC_END(cpu_feroceon_set_pte_ext) + +/* Suspend/resume support: taken from arch/arm/mm/proc-arm926.S */ +.globl cpu_feroceon_suspend_size +.equ cpu_feroceon_suspend_size, 4 * 3 +#ifdef CONFIG_ARM_CPU_SUSPEND +SYM_TYPED_FUNC_START(cpu_feroceon_do_suspend) + stmfd sp!, {r4 - r6, lr} + mrc p15, 0, r4, c13, c0, 0 @ PID + mrc p15, 0, r5, c3, c0, 0 @ Domain ID + mrc p15, 0, r6, c1, c0, 0 @ Control register + stmia r0, {r4 - r6} + ldmfd sp!, {r4 - r6, pc} +SYM_FUNC_END(cpu_feroceon_do_suspend) + +SYM_TYPED_FUNC_START(cpu_feroceon_do_resume) + mov ip, #0 + mcr p15, 0, ip, c8, c7, 0 @ invalidate I+D TLBs + mcr p15, 0, ip, c7, c7, 0 @ invalidate I+D caches + ldmia r0, {r4 - r6} + mcr p15, 0, r4, c13, c0, 0 @ PID + mcr p15, 0, r5, c3, c0, 0 @ Domain ID + mcr p15, 0, r1, c2, c0, 0 @ TTB address + mov r0, r6 @ control register + b cpu_resume_mmu +SYM_FUNC_END(cpu_feroceon_do_resume) +#endif .type __feroceon_setup, #function __feroceon_setup: @@ -530,7 +534,7 @@ __feroceon_setup: mrc p15, 0, r0, c1, c0 @ get control register v4 bic r0, r0, r5 orr r0, r0, r6 - mov pc, lr + ret lr .size __feroceon_setup, . - __feroceon_setup /* @@ -560,7 +564,7 @@ feroceon_crval: .align - .section ".proc.info.init", #alloc, #execinstr + .section ".proc.info.init", "a" .macro feroceon_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, cache:req .type __\name\()_proc_info,#object @@ -577,7 +581,7 @@ __\name\()_proc_info: PMD_BIT4 | \ PMD_SECT_AP_WRITE | \ PMD_SECT_AP_READ - b __feroceon_setup + initfn __feroceon_setup, __\name\()_proc_info .long cpu_arch_name .long cpu_elf_name .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP |