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authorNobuhiro Iwamatsu <iwamatsu@nigauri.org>2008-03-12 12:15:29 +0900
committerNobuhiro Iwamatsu <iwamatsu@nigauri.org>2008-03-28 14:16:13 +0900
commite92c95180bb5bc5fd4051598a9d60beaba48988d (patch)
treeffce19d21bd74b2cc7a312bba52b00869efb984d /include/asm-sh/cache.h
parent28e5efde4d925fcb34901d0030d0648de2da7e89 (diff)
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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/cache.h')
-rw-r--r--include/asm-sh/cache.h35
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 */