diff options
Diffstat (limited to 'arch/arm/mm/cache-v7m.S')
| -rw-r--r-- | arch/arm/mm/cache-v7m.S | 66 |
1 files changed, 30 insertions, 36 deletions
diff --git a/arch/arm/mm/cache-v7m.S b/arch/arm/mm/cache-v7m.S index 32aa2a2aa260..7f9cfad2ea21 100644 --- a/arch/arm/mm/cache-v7m.S +++ b/arch/arm/mm/cache-v7m.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/mm/cache-v7m.S * @@ -6,14 +7,11 @@ * Copyright (C) 2001 Deep Blue Solutions Ltd. * Copyright (C) 2005 ARM Ltd. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This is the "shell" of the ARMv7M processor support. */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/errno.h> #include <asm/unwind.h> @@ -21,6 +19,8 @@ #include "proc-macros.S" +.arch armv7-m + /* Generic V7M read/write macros for memory mapped cache operations */ .macro v7m_cache_read, rt, reg movw \rt, #:lower16:BASEADDR_V7M_SCB + \reg @@ -160,10 +160,10 @@ ENDPROC(v7m_invalidate_l1) * Registers: * r0 - set to 0 */ -ENTRY(v7m_flush_icache_all) +SYM_TYPED_FUNC_START(v7m_flush_icache_all) invalidate_icache r0 ret lr -ENDPROC(v7m_flush_icache_all) +SYM_FUNC_END(v7m_flush_icache_all) /* * v7m_flush_dcache_all() @@ -186,13 +186,13 @@ flush_levels: and r1, r1, #7 @ mask of the bits for current cache only cmp r1, #2 @ see what cache we have at this level blt skip @ skip if no cache, or just i-cache -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION save_and_disable_irqs_notrace r9 @ make cssr&csidr read atomic #endif write_csselr r10, r1 @ set current cache level isb @ isb to sych the new cssr&csidr read_ccsidr r1 @ read the new csidr -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION restore_irqs_notrace r9 #endif and r2, r1, #7 @ extract the length of the cache lines @@ -237,13 +237,13 @@ ENDPROC(v7m_flush_dcache_all) * unification in a single instruction. * */ -ENTRY(v7m_flush_kern_cache_all) +SYM_TYPED_FUNC_START(v7m_flush_kern_cache_all) stmfd sp!, {r4-r7, r9-r11, lr} bl v7m_flush_dcache_all invalidate_icache r0 ldmfd sp!, {r4-r7, r9-r11, lr} ret lr -ENDPROC(v7m_flush_kern_cache_all) +SYM_FUNC_END(v7m_flush_kern_cache_all) /* * v7m_flush_cache_all() @@ -252,8 +252,9 @@ ENDPROC(v7m_flush_kern_cache_all) * * - mm - mm_struct describing address space */ -ENTRY(v7m_flush_user_cache_all) - /*FALLTHROUGH*/ +SYM_TYPED_FUNC_START(v7m_flush_user_cache_all) + ret lr +SYM_FUNC_END(v7m_flush_user_cache_all) /* * v7m_flush_cache_range(start, end, flags) @@ -267,10 +268,9 @@ ENTRY(v7m_flush_user_cache_all) * It is assumed that: * - we have a VIPT cache. */ -ENTRY(v7m_flush_user_cache_range) +SYM_TYPED_FUNC_START(v7m_flush_user_cache_range) ret lr -ENDPROC(v7m_flush_user_cache_all) -ENDPROC(v7m_flush_user_cache_range) +SYM_FUNC_END(v7m_flush_user_cache_range) /* * v7m_coherent_kern_range(start,end) @@ -285,8 +285,11 @@ ENDPROC(v7m_flush_user_cache_range) * It is assumed that: * - the Icache does not read data from the write buffer */ -ENTRY(v7m_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(v7m_coherent_kern_range) +#ifdef CONFIG_CFI /* Fallthrough if !CFI */ + b v7m_coherent_user_range +#endif +SYM_FUNC_END(v7m_coherent_kern_range) /* * v7m_coherent_user_range(start,end) @@ -301,7 +304,7 @@ ENTRY(v7m_coherent_kern_range) * It is assumed that: * - the Icache does not read data from the write buffer */ -ENTRY(v7m_coherent_user_range) +SYM_TYPED_FUNC_START(v7m_coherent_user_range) UNWIND(.fnstart ) dcache_line_size r2, r3 sub r3, r2, #1 @@ -329,8 +332,7 @@ ENTRY(v7m_coherent_user_range) isb ret lr UNWIND(.fnend ) -ENDPROC(v7m_coherent_kern_range) -ENDPROC(v7m_coherent_user_range) +SYM_FUNC_END(v7m_coherent_user_range) /* * v7m_flush_kern_dcache_area(void *addr, size_t size) @@ -341,7 +343,7 @@ ENDPROC(v7m_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(v7m_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(v7m_flush_kern_dcache_area) dcache_line_size r2, r3 add r1, r0, r1 sub r3, r2, #1 @@ -353,7 +355,7 @@ ENTRY(v7m_flush_kern_dcache_area) blo 1b dsb st ret lr -ENDPROC(v7m_flush_kern_dcache_area) +SYM_FUNC_END(v7m_flush_kern_dcache_area) /* * v7m_dma_inv_range(start,end) @@ -409,7 +411,7 @@ ENDPROC(v7m_dma_clean_range) * - start - virtual start address of region * - end - virtual end address of region */ -ENTRY(v7m_dma_flush_range) +SYM_TYPED_FUNC_START(v7m_dma_flush_range) dcache_line_size r2, r3 sub r3, r2, #1 bic r0, r0, r3 @@ -420,7 +422,7 @@ ENTRY(v7m_dma_flush_range) blo 1b dsb st ret lr -ENDPROC(v7m_dma_flush_range) +SYM_FUNC_END(v7m_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -428,12 +430,12 @@ ENDPROC(v7m_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(v7m_dma_map_area) +SYM_TYPED_FUNC_START(v7m_dma_map_area) add r1, r1, r0 teq r2, #DMA_FROM_DEVICE beq v7m_dma_inv_range b v7m_dma_clean_range -ENDPROC(v7m_dma_map_area) +SYM_FUNC_END(v7m_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -441,17 +443,9 @@ ENDPROC(v7m_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(v7m_dma_unmap_area) +SYM_TYPED_FUNC_START(v7m_dma_unmap_area) add r1, r1, r0 teq r2, #DMA_TO_DEVICE bne v7m_dma_inv_range ret lr -ENDPROC(v7m_dma_unmap_area) - - .globl v7m_flush_kern_cache_louis - .equ v7m_flush_kern_cache_louis, v7m_flush_kern_cache_all - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions v7m +SYM_FUNC_END(v7m_dma_unmap_area) |