diff options
| author | Stuart Menefy <stuart.menefy@st.com> | 2009-08-24 18:16:56 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-24 18:16:56 +0900 |
| commit | 6d243dd37002bcee54841852ab1b8606fd457851 (patch) | |
| tree | 9c8e55d065116647615a86e3eb0c783fe98cc83e /arch/sh/include/asm/cachectl.h | |
| parent | a5cf9e2444ec15de5407696ff21c32dd21ca0a8d (diff) | |
sh: Add sys_cacheflush() call for SH CPUs.
Adds a system call to allow user code to flush code from the cache.
You can use instructions for the data side, but the iside can
only be done by a flush ROM which really only works with a direct
mapped cache. The later SH4's have 2 way Iside, so this call allows
a portable way to flush the cache.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/asm/cachectl.h')
| -rw-r--r-- | arch/sh/include/asm/cachectl.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/sh/include/asm/cachectl.h b/arch/sh/include/asm/cachectl.h new file mode 100644 index 00000000000..305dd7082a6 --- /dev/null +++ b/arch/sh/include/asm/cachectl.h @@ -0,0 +1,12 @@ +#ifndef _SH_CACHECTL_H +#define _SH_CACHECTL_H + +/* Definitions for the cacheflush system call. */ + +#define CACHEFLUSH_D_INVAL 0x1 /* invalidate (without write back) */ +#define CACHEFLUSH_D_WB 0x2 /* write back (without invalidate) */ +#define CACHEFLUSH_D_PURGE 0x3 /* writeback and invalidate */ + +#define CACHEFLUSH_I 0x4 + +#endif /* _SH_CACHECTL_H */ |