diff options
| author |  Greg Ungerer <gerg@uclinux.org>
| 2014-08-19 11:39:09 +1000 |
|---|---|---|
| committer | Greg Ungerer <gerg@uclinux.org>
| 2014-09-29 09:18:34 +1000 |
| commit | f86b9e03837beafb4b48d53a76ee4b88559226de (patch) | |
| tree | 53a673c3719aec83c6c55c265ed6e6433d6550ca /arch/m68k/coldfire/cache.c | |
| parent | Linux 3.17-rc7 (diff) | |
| download | linux-f86b9e03837beafb4b48d53a76ee4b88559226de.tar.gz linux-f86b9e03837beafb4b48d53a76ee4b88559226de.tar.bz2 linux-f86b9e03837beafb4b48d53a76ee4b88559226de.zip | |
m68k: move coldfire platform code
Move the m68k ColdFire platform support code directory to be with the
existing m68k platforms. Although the ColdFire is not a platform as such,
we have always kept all its support together. No reason to change that
as this time.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
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 */ +/***************************************************************************/ |