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can not enable cache for ram in auto.c 

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1877 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Yinghai Lu 2005-01-15 04:12:27 +00:00
parent e562738f8c
commit 1d6b46060c
1 changed files with 0 additions and 17 deletions
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17
src/cpu/amd/mtrr/amd_earlymtrr.c
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@ -40,23 +40,6 @@ static void do_amd_early_mtrr_init(const unsigned long *mtrr_msrs)
msr.lo = (((CONFIG_LB_MEM_TOPK << 10) + TOP_MEM_MASK) & ~TOP_MEM_MASK);
wrmsr(TOP_MEM, msr);
/* Enable caching for 0 - 1MB using variable mtrr */
#if 0
set_var_mtrr(0, 0x00000000, (CONFIG_LB_MEM_TOPK << 10), MTRR_TYPE_WRBACK);
#else
msr = rdmsr(0x200);
msr.hi = 0x00000000;
msr.lo &= 0x00000f00;
msr.lo |= 0x00000000 | MTRR_TYPE_WRBACK;
wrmsr(0x200, msr);
msr = rdmsr(0x201);
msr.hi = 0x0000000f;
msr.lo &= 0x000007ff;
msr.lo |= (~((CONFIG_LB_MEM_TOPK << 10) - 1)) | 0x800;
wrmsr(0x201, msr);
#endif
#if defined(XIP_ROM_SIZE)
/* enable write through caching so we can do execute in place
* on the flash rom.