diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2014-10-24 13:26:37 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-10-24 13:26:37 -0700 |
| commit | db65bcfd9563a7531c3dd46c350565705be1fd84 (patch) | |
| tree | ff7b068472764e36ab02a739917e206dd11d6b46 /arch/m68k/coldfire/cache.c | |
| parent | b47dcbdc5161d3d5756f430191e2840d9b855492 (diff) | |
| parent | f114040e3ea6e07372334ade75d1ee0775c355e1 (diff) | |
Merge tag 'v3.18-rc1' into x86/urgent
Reason:
Need to apply audit patch on top of v3.18-rc1.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/m68k/coldfire/cache.c')
| -rw-r--r-- | arch/m68k/coldfire/cache.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/cache.c b/arch/m68k/coldfire/cache.c new file mode 100644 index 000000000000..71beeaf0c5c4 --- /dev/null +++ b/arch/m68k/coldfire/cache.c @@ -0,0 +1,48 @@ +/***************************************************************************/ + +/* + * cache.c -- general ColdFire Cache maintenance code + * + * Copyright (C) 2010, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> + +/***************************************************************************/ +#ifdef CACHE_PUSH +/***************************************************************************/ + +/* + * Use cpushl to push all dirty cache lines back to memory. + * Older versions of GAS don't seem to know how to generate the + * ColdFire cpushl instruction... Oh well, bit stuff it for now. + */ + +void mcf_cache_push(void) +{ + __asm__ __volatile__ ( + "clrl %%d0\n\t" + "1:\n\t" + "movel %%d0,%%a0\n\t" + "2:\n\t" + ".word 0xf468\n\t" + "addl %0,%%a0\n\t" + "cmpl %1,%%a0\n\t" + "blt 2b\n\t" + "addql #1,%%d0\n\t" + "cmpil %2,%%d0\n\t" + "bne 1b\n\t" + : /* No output */ + : "i" (CACHE_LINE_SIZE), + "i" (DCACHE_SIZE / CACHE_WAYS), + "i" (CACHE_WAYS) + : "d0", "a0" ); +} + +/***************************************************************************/ +#endif /* CACHE_PUSH */ +/***************************************************************************/ |