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author | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2008-03-12 03:15:29 (GMT) |
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committer | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2008-03-28 05:16:13 (GMT) |
commit | e92c95180bb5bc5fd4051598a9d60beaba48988d (patch) | |
tree | ffce19d21bd74b2cc7a312bba52b00869efb984d /include/asm-sh | |
parent | 28e5efde4d925fcb34901d0030d0648de2da7e89 (diff) | |
download | u-boot-e92c95180bb5bc5fd4051598a9d60beaba48988d.tar.xz |
sh: Add support SH4 cache control
Add support SH4 cache control and flash_cache function
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'include/asm-sh')
-rw-r--r-- | include/asm-sh/cache.h | 35 |
1 files changed, 35 insertions, 0 deletions
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 */ |