diff options
Diffstat (limited to 'src/cpu/intel/smm/gen1/smmrelocate.c')
| -rw-r--r-- | src/cpu/intel/smm/gen1/smmrelocate.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/src/cpu/intel/smm/gen1/smmrelocate.c b/src/cpu/intel/smm/gen1/smmrelocate.c index 5667648d24..105b9a45ca 100644 --- a/src/cpu/intel/smm/gen1/smmrelocate.c +++ b/src/cpu/intel/smm/gen1/smmrelocate.c @@ -56,17 +56,31 @@ struct smm_relocation_params { static struct smm_relocation_params smm_reloc_params; static void *default_smm_area = NULL; -static void write_smrr(struct smm_relocation_params *relo_params) +/* On model_6fx, model_1067x and model_106cx SMRR functions slightly + differently. The MSR are at different location from the rest + and need to be explicitly enabled in IA32_FEATURE_CONTROL MSR. */ +bool cpu_has_alternative_smrr(void) { struct cpuinfo_x86 c; + get_fms(&c, cpuid_eax(1)); + if (c.x86 != 6) + return false; + switch (c.x86_model) { + case 0xf: + case 0x17: /* core2 */ + case 0x1c: /* Bonnell */ + return true; + default: + return false; + } +} +static void write_smrr(struct smm_relocation_params *relo_params) +{ printk(BIOS_DEBUG, "Writing SMRR. base = 0x%08x, mask=0x%08x\n", relo_params->smrr_base.lo, relo_params->smrr_mask.lo); - /* Both model_6fx and model_1067x SMRR function slightly differently - from the rest. The MSR are at different location from the rest - and need to be explicitly enabled. */ - get_fms(&c, cpuid_eax(1)); - if (c.x86 == 6 && (c.x86_model == 0xf || c.x86_model == 0x17)) { + + if (cpu_has_alternative_smrr()) { msr_t msr; msr = rdmsr(IA32_FEATURE_CONTROL); /* SMRR enabled and feature locked */ @@ -171,7 +185,7 @@ static void fill_in_relocation_params(struct smm_relocation_params *params) /* On model_6fx and model_1067x bits [0:11] on smrr_base are reserved */ get_fms(&c, cpuid_eax(1)); - if (c.x86 == 6 && (c.x86_model == 0xf || c.x86_model == 0x17)) + if (cpu_has_alternative_smrr()) params->smrr_base.lo = (params->smram_base & rmask); else params->smrr_base.lo = (params->smram_base & rmask) |