diff options
Diffstat (limited to 'arch/arm/mm/proc-sa110.S')
| -rw-r--r-- | arch/arm/mm/proc-sa110.S | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/arm/mm/proc-sa110.S b/arch/arm/mm/proc-sa110.S index d077ab1d2..221797862 100644 --- a/arch/arm/mm/proc-sa110.S +++ b/arch/arm/mm/proc-sa110.S @@ -10,6 +10,11 @@ #include <asm/assembler.h> #include "../lib/constants.h" +/* This is the maximum size of an area which will be flushed. If the area + * is larger than this, then we flush the whole cache + */ +#define MAX_AREA_SIZE 32768 + .data Lclean_switch: .long 0 .text @@ -52,7 +57,7 @@ _sa110_flush_cache_all_r2: .align 5 _sa110_flush_cache_area: sub r3, r1, r0 - cmp r3, #32768 + cmp r3, #MAX_AREA_SIZE bgt _sa110_flush_cache_all_r2 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c6, 1 @ flush D entry @@ -79,16 +84,17 @@ _sa110_flush_cache_area: .align 5 _sa110_cache_wback_area: sub r3, r1, r0 - cmp r3, #32768 - movgt r2, #0 - bgt _sa110_flush_cache_all + cmp r3, #MAX_AREA_SIZE + mov r2, #0 + bgt _sa110_flush_cache_all_r2 + bic r0, r0, #31 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #32 mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #32 cmp r0, r1 blt 1b - mcr p15, 0, r0, c7, c10, 4 @ drain WB + mcr p15, 0, r2, c7, c10, 4 @ drain WB mov pc, lr /* |