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| author | Jiri Kosina <jkosina@suse.cz> | 2011-02-15 10:24:31 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-02-15 10:24:31 +0100 |
| commit | 0a9d59a2461477bd9ed143c01af9df3f8f00fa81 (patch) | |
| tree | df997d1cfb0786427a0df1fbd6f0640fa4248cf4 /arch/m68knommu/platform/coldfire/cache.c | |
| parent | a23ce6da9677d245aa0aadc99f4197030350ab54 (diff) | |
| parent | 795abaf1e4e188c4171e3cd3dbb11a9fcacaf505 (diff) | |
Merge branch 'master' into for-next
Diffstat (limited to 'arch/m68knommu/platform/coldfire/cache.c')
| -rw-r--r-- | arch/m68knommu/platform/coldfire/cache.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/m68knommu/platform/coldfire/cache.c b/arch/m68knommu/platform/coldfire/cache.c new file mode 100644 index 000000000000..235d3c4f4f0f --- /dev/null +++ b/arch/m68knommu/platform/coldfire/cache.c @@ -0,0 +1,48 @@ +/***************************************************************************/ + +/* + * cache.c -- general ColdFire Cache maintainence 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 */ +/***************************************************************************/ |