diff options
| -rw-r--r-- | cpu/sh4/cpu.c | 3 | ||||
| -rw-r--r-- | include/asm-sh/cache.h | 35 |
2 files changed, 37 insertions, 1 deletions
diff --git a/cpu/sh4/cpu.c b/cpu/sh4/cpu.c index 0ebf951..d94e139 100644 --- a/cpu/sh4/cpu.c +++ b/cpu/sh4/cpu.c @@ -24,6 +24,7 @@ #include <common.h> #include <command.h> #include <asm/processor.h> +#include <asm/cache.h> int checkcpu(void) { @@ -51,7 +52,7 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) void flush_cache (unsigned long addr, unsigned long size) { - + dcache_invalid_range( addr , addr + size ); } void icache_enable (void) diff --git a/include/asm-sh/cache.h b/include/asm-sh/cache.h new file mode 100644 index 0000000..67474c7 --- /dev/null +++ b/include/asm-sh/cache.h @@ -0,0 +1,35 @@ +#ifndef __ASM_SH_CACHE_H +#define __ASM_SH_CACHE_H + +#if defined(CONFIG_SH4) || defined(CONFIG_SH4A) + +#define L1_CACHE_BYTES 32 +struct __large_struct { unsigned long buf[100]; }; +#define __m(x) (*(struct __large_struct *)(x)) + +void dcache_wback_range(u32 start, u32 end) +{ + u32 v; + + start &= ~(L1_CACHE_BYTES-1); + for (v = start; v < end; v+=L1_CACHE_BYTES) { + asm volatile("ocbwb %0" + : /* no output */ + : "m" (__m(v))); + } +} + +void dcache_invalid_range(u32 start, u32 end) +{ + u32 v; + + start &= ~(L1_CACHE_BYTES-1); + for (v = start; v < end; v+=L1_CACHE_BYTES) { + asm volatile("ocbi %0" + : /* no output */ + : "m" (__m(v))); + } +} +#endif /* CONFIG_SH4 || CONFIG_SH4A */ + +#endif /* __ASM_SH_CACHE_H */ |