diff options
| -rw-r--r-- | src/cpu/amd/car/cache_as_ram.inc | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/cpu/amd/car/cache_as_ram.inc b/src/cpu/amd/car/cache_as_ram.inc index 0b2bc60bea..2a33dc1171 100644 --- a/src/cpu/amd/car/cache_as_ram.inc +++ b/src/cpu/amd/car/cache_as_ram.inc @@ -34,6 +34,7 @@ #define MSR_MCFG_BASE 0xC0010058 #define MSR_FAM10 0xC001102A +#define jmp_if_not_k8(x) comisd %xmm2, %xmm1; jae x #define jmp_if_k8(x) comisd %xmm2, %xmm1; jb x #define CPUID_MASK 0x0ff00f00 @@ -344,6 +345,19 @@ wbcache_post_fam10_setup: andl $(~(CR0_CacheDisable | CR0_NoWriteThrough)), %eax movl %eax, %cr0 + jmp_if_not_k8(CAR_skip_k8_errata_part1) + + /* Set DisFillP on BSP. */ + movl $0x8000c068, %eax + movw $0xcf8, %dx + outl %eax, %dx + addw $4, %dx + inl %dx, %eax + bts $10, %eax + outl %eax, %dx + +CAR_skip_k8_errata_part1: + jmp_if_k8(fam10_end_part1) /* So we need to check if it is BSP. */ @@ -367,6 +381,19 @@ fam10_end_part1: xorl %eax, %eax rep stosl + jmp_if_not_k8(CAR_skip_k8_errata_part2) + + /* Clear DisFillP on BSP. */ + movl $0x8000c068, %eax + movw $0xcf8, %dx + outl %eax, %dx + addw $4, %dx + inl %dx, %eax + btr $10, %eax + outl %eax, %dx + +CAR_skip_k8_errata_part2: + /* Set up the stack pointer. */ movl $(CacheBase + CacheSize), %eax movl %eax, %esp |