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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-04-07 14:17:15 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-04-07 14:23:57 +0200 |
| commit | 95f3df6bcb89d370c57b7165f55c5a409d011c8e (patch) | |
| tree | 9accc55603a6274a281fce6950fbef26f051a2c5 /arch/arm/mm/cache-v4wb.S | |
| parent | [ARM] ebsa110: Fix incorrect serial port address (diff) | |
| download | linux-95f3df6bcb89d370c57b7165f55c5a409d011c8e.tar.xz linux-95f3df6bcb89d370c57b7165f55c5a409d011c8e.zip | |
[ARM] Fix SA110/SA1100 cache flushing
We had two implementations for flushing the cache, which meant StrongARM
caches weren't being correctly flushed. Fix this by always using the
v4wb_flush_kern_cache_all method, rather than duplicating it.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/cache-v4wb.S')
| -rw-r--r-- | arch/arm/mm/cache-v4wb.S | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/arch/arm/mm/cache-v4wb.S b/arch/arm/mm/cache-v4wb.S index 5c4055b62d97..54e3c5bb5186 100644 --- a/arch/arm/mm/cache-v4wb.S +++ b/arch/arm/mm/cache-v4wb.S @@ -10,7 +10,7 @@ #include <linux/config.h> #include <linux/linkage.h> #include <linux/init.h> -#include <asm/hardware.h> +#include <asm/memory.h> #include <asm/page.h> #include "proc-macros.S" @@ -46,6 +46,11 @@ */ #define CACHE_DLIMIT (CACHE_DSIZE * 4) + .data +flush_base: + .long FLUSH_BASE + .text + /* * flush_user_cache_all() * @@ -63,11 +68,21 @@ ENTRY(v4wb_flush_kern_cache_all) mov ip, #0 mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache __flush_whole_cache: - mov r0, #FLUSH_BASE - add r1, r0, #CACHE_DSIZE -1: ldr r2, [r0], #32 - cmp r0, r1 + ldr r3, =flush_base + ldr r1, [r3, #0] + eor r1, r1, #CACHE_DSIZE + str r1, [r3, #0] + add r2, r1, #CACHE_DSIZE +1: ldr r3, [r1], #32 + cmp r1, r2 + blo 1b +#ifdef FLUSH_BASE_MINICACHE + add r2, r2, #FLUSH_BASE_MINICACHE - FLUSH_BASE + sub r1, r2, #512 @ only 512 bytes +1: ldr r3, [r1], #32 + cmp r1, r2 blo 1b +#endif mcr p15, 0, ip, c7, c10, 4 @ drain write buffer mov pc, lr @@ -82,6 +97,7 @@ __flush_whole_cache: * - flags - vma_area_struct flags describing address space */ ENTRY(v4wb_flush_user_cache_range) + mov ip, #0 sub r3, r1, r0 @ calculate total size tst r2, #VM_EXEC @ executable region? mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache |