diff options
Diffstat (limited to 'arch/arm/mm/proc-arm925.S')
| -rw-r--r-- | arch/arm/mm/proc-arm925.S | 86 |
1 files changed, 40 insertions, 46 deletions
diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S index 32a47cc19076..1c4830afe1d3 100644 --- a/arch/arm/mm/proc-arm925.S +++ b/arch/arm/mm/proc-arm925.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * linux/arch/arm/mm/arm925.S: MMU functions for ARM925 * @@ -11,21 +12,6 @@ * * hacked for non-paged-MM by Hyok S. Choi, 2004. * - * 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 - * - * * These are the low level assembler for performing cache and TLB * functions on the arm925. * @@ -51,10 +37,11 @@ #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" @@ -85,18 +72,20 @@ /* * cpu_arm925_proc_init() */ -ENTRY(cpu_arm925_proc_init) +SYM_TYPED_FUNC_START(cpu_arm925_proc_init) ret lr +SYM_FUNC_END(cpu_arm925_proc_init) /* * cpu_arm925_proc_fin() */ -ENTRY(cpu_arm925_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm925_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm925_proc_fin) /* * cpu_arm925_reset(loc) @@ -109,14 +98,14 @@ ENTRY(cpu_arm925_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm925_reset) +SYM_TYPED_FUNC_START(cpu_arm925_reset) /* Send software reset to MPU and DSP */ mov ip, #0xff000000 orr ip, ip, #0x00fe0000 orr ip, ip, #0x0000ce00 mov r4, #1 strh r4, [ip, #0x10] -ENDPROC(cpu_arm925_reset) +SYM_FUNC_END(cpu_arm925_reset) .popsection mov ip, #0 @@ -137,7 +126,7 @@ ENDPROC(cpu_arm925_reset) * Called with IRQs disabled */ .align 10 -ENTRY(cpu_arm925_do_idle) +SYM_TYPED_FUNC_START(cpu_arm925_do_idle) mov r0, #0 mrc p15, 0, r1, c1, c0, 0 @ Read control register mcr p15, 0, r0, c7, c10, 4 @ Drain write buffer @@ -146,17 +135,18 @@ ENTRY(cpu_arm925_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt mcr p15, 0, r1, c1, c0, 0 @ Restore ICache enable ret lr +SYM_FUNC_END(cpu_arm925_do_idle) /* * flush_icache_all() * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm925_flush_icache_all) +SYM_TYPED_FUNC_START(arm925_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(arm925_flush_icache_all) +SYM_FUNC_END(arm925_flush_icache_all) /* * flush_user_cache_all() @@ -164,15 +154,14 @@ ENDPROC(arm925_flush_icache_all) * Clean and invalidate all cache entries in a particular * address space. */ -ENTRY(arm925_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm925_flush_user_cache_all, arm925_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm925_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm925_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -189,6 +178,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm925_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -200,7 +190,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags describing address space */ -ENTRY(arm925_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm925_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -226,6 +216,7 @@ ENTRY(arm925_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm925_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -237,8 +228,11 @@ ENTRY(arm925_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm925_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm925_coherent_kern_range) +#ifdef CONFIG_CFI /* Fallthrough if !CFI */ + b arm925_coherent_user_range +#endif +SYM_FUNC_END(arm925_coherent_kern_range) /* * coherent_user_range(start, end) @@ -250,7 +244,7 @@ ENTRY(arm925_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm925_coherent_user_range) +SYM_TYPED_FUNC_START(arm925_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 @@ -260,6 +254,7 @@ ENTRY(arm925_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm925_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -270,7 +265,7 @@ ENTRY(arm925_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm925_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm925_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 @@ -280,6 +275,7 @@ ENTRY(arm925_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm925_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -338,7 +334,7 @@ arm925_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm925_dma_flush_range) +SYM_TYPED_FUNC_START(arm925_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -351,6 +347,7 @@ ENTRY(arm925_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm925_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -358,13 +355,13 @@ ENTRY(arm925_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm925_dma_map_area) +SYM_TYPED_FUNC_START(arm925_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm925_dma_clean_range bcs arm925_dma_inv_range b arm925_dma_flush_range -ENDPROC(arm925_dma_map_area) +SYM_FUNC_END(arm925_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -372,17 +369,11 @@ ENDPROC(arm925_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm925_dma_unmap_area) +SYM_TYPED_FUNC_START(arm925_dma_unmap_area) ret lr -ENDPROC(arm925_dma_unmap_area) - - .globl arm925_flush_kern_cache_louis - .equ arm925_flush_kern_cache_louis, arm925_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm925 +SYM_FUNC_END(arm925_dma_unmap_area) -ENTRY(cpu_arm925_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm925_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE @@ -391,6 +382,7 @@ ENTRY(cpu_arm925_dcache_clean_area) #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(cpu_arm925_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -402,7 +394,7 @@ ENTRY(cpu_arm925_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm925_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm925_switch_mm) #ifdef CONFIG_MMU mov ip, #0 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -420,6 +412,7 @@ ENTRY(cpu_arm925_switch_mm) mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs #endif ret lr +SYM_FUNC_END(cpu_arm925_switch_mm) /* * cpu_arm925_set_pte_ext(ptep, pte, ext) @@ -427,7 +420,7 @@ ENTRY(cpu_arm925_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm925_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm925_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -437,6 +430,7 @@ ENTRY(cpu_arm925_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif /* CONFIG_MMU */ ret lr +SYM_FUNC_END(cpu_arm925_set_pte_ext) .type __arm925_setup, #function __arm925_setup: @@ -491,7 +485,7 @@ arm925_crval: .align - .section ".proc.info.init", #alloc + .section ".proc.info.init", "a" .macro arm925_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, cache .type __\name\()_proc_info,#object |