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| author | Greg Watson <jarrah@users.sourceforge.net> | 2004-03-07 22:24:05 +0000 |
|---|---|---|
| committer | Greg Watson <jarrah@users.sourceforge.net> | 2004-03-07 22:24:05 +0000 |
| commit | a3d26484cc98bc24a7d375a45637671dc6b67585 (patch) | |
| tree | 4387c6a538d0dd4198013e4758a200b503dfc5b2 /src/cpu/ppc/ppc7xx/cache.S | |
| parent | efa1f324afd56dae5c6917dd1715a3efaf3886e3 (diff) | |
*** empty log message ***
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1384 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/ppc/ppc7xx/cache.S')
| -rw-r--r-- | src/cpu/ppc/ppc7xx/cache.S | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/cpu/ppc/ppc7xx/cache.S b/src/cpu/ppc/ppc7xx/cache.S new file mode 100644 index 0000000000..237b178bdf --- /dev/null +++ b/src/cpu/ppc/ppc7xx/cache.S @@ -0,0 +1,23 @@ +#define ASM +#include "ppcreg.h" +#include <ppc_asm.tmpl> + +#define NUM_CACHE_LINES 128*8 +#define L1_CACHE_LINE_SIZE 32 +#define cache_flush_buffer 0x1000 + +/* + * Flush data cache + * Do this by just reading lots of stuff into the cache. + */ +.globl flush_dcache +flush_dcache: + lis r3,cache_flush_buffer@h + ori r3,r3,cache_flush_buffer@l + li r4,NUM_CACHE_LINES + mtctr r4 +0: lwz r4,0(r3) + addi r3,r3,L1_CACHE_LINE_SIZE + bdnz 0b + blr + |