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| author | Gen FUKATSU <fukatsu.gen@jp.panasonic.com> | 2005-09-30 16:09:17 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-09-30 16:09:17 +0100 |
| commit | 217874feed0d3a6543a6b7127782f4a08bffd731 (patch) | |
| tree | 88c9468bea86336ac5cf27fb72252bd3527b7cb3 /arch | |
| parent | a06f5466c4576dcbf838a50a87903b0082774da7 (diff) | |
| download | linux-stable-217874feed0d3a6543a6b7127782f4a08bffd731.tar.gz linux-stable-217874feed0d3a6543a6b7127782f4a08bffd731.tar.bz2 linux-stable-217874feed0d3a6543a6b7127782f4a08bffd731.zip | |
[ARM] 2940/1: Fix BTB entry flush in arch/arm/mm/cache-v6.S
Patch from Gen FUKATSU
Invalidate BTB entry instruction flushes two instruction
at a time. Therefore this instruction should be done four
times after invalidate instruction cache line.
Signed-off-by: Gen Fukatsu
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mm/cache-v6.S | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S index 85c10a71e7c6..72966d90e956 100644 --- a/arch/arm/mm/cache-v6.S +++ b/arch/arm/mm/cache-v6.S @@ -18,6 +18,7 @@ #define HARVARD_CACHE #define CACHE_LINE_SIZE 32 #define D_CACHE_LINE_SIZE 32 +#define BTB_FLUSH_SIZE 8 /* * v6_flush_cache_all() @@ -98,7 +99,13 @@ ENTRY(v6_coherent_user_range) mcr p15, 0, r0, c7, c5, 1 @ invalidate I line #endif mcr p15, 0, r0, c7, c5, 7 @ invalidate BTB entry - add r0, r0, #CACHE_LINE_SIZE + add r0, r0, #BTB_FLUSH_SIZE + mcr p15, 0, r0, c7, c5, 7 @ invalidate BTB entry + add r0, r0, #BTB_FLUSH_SIZE + mcr p15, 0, r0, c7, c5, 7 @ invalidate BTB entry + add r0, r0, #BTB_FLUSH_SIZE + mcr p15, 0, r0, c7, c5, 7 @ invalidate BTB entry + add r0, r0, #BTB_FLUSH_SIZE cmp r0, r1 blo 1b #ifdef HARVARD_CACHE |