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| author | Greg Watson <jarrah@users.sourceforge.net> | 2004-04-21 22:30:47 +0000 |
|---|---|---|
| committer | Greg Watson <jarrah@users.sourceforge.net> | 2004-04-21 22:30:47 +0000 |
| commit | c36b4275c6a3756cb0118f5b619299ab1772e19a (patch) | |
| tree | b6ee5293cf9fbc2b94f92dede7ef7db755839741 /src | |
| parent | 12c3154cee6b0c8167d4bf704c5ca25291c7ef71 (diff) | |
added cache initialization code
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1522 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/ppc/init/crt0.S.lb | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/arch/ppc/init/crt0.S.lb b/src/arch/ppc/init/crt0.S.lb index 5c5b5f4716..738d4b4a67 100644 --- a/src/arch/ppc/init/crt0.S.lb +++ b/src/arch/ppc/init/crt0.S.lb @@ -33,6 +33,21 @@ system_reset: #if USE_DCACHE_RAM == 1 #define DCACHE_RAM_END (DCACHE_RAM_BASE + DCACHE_RAM_SIZE - 1) /* + * Initialize data cache blocks + * (assumes cache block size of 32 bytes) + * + * NOTE: This may need to be moved to FAMILY_INIT if + * dcbz is not supported on all CPU's + */ + lis r1, DCACHE_RAM_BASE@h + ori r1, r1, DCACHE_RAM_BASE@l + li r3, (DCACHE_RAM_SIZE / 32) + mtctr r3 +0: dcbz r0, r1 + addi r1, r1, 32 + bdnz 0b + + /* * Set up stack in cache. The SP must be 16-byte (4-word) aligned * for SYSV EABI or 8-byte (2-word) aligned for PPC EABI, so we make * it 16-byte aligned to cover both cases. Also we have to ensure that |