summaryrefslogtreecommitdiff
path: root/src/cpu/intel/smm
diff options
context:
space:
mode:
Diffstat (limited to 'src/cpu/intel/smm')
-rw-r--r--src/cpu/intel/smm/gen1/smi.h2
-rw-r--r--src/cpu/intel/smm/gen1/smmrelocate.c28
2 files changed, 23 insertions, 7 deletions
diff --git a/src/cpu/intel/smm/gen1/smi.h b/src/cpu/intel/smm/gen1/smi.h
index f4cbbc3699..cc6811fd63 100644
--- a/src/cpu/intel/smm/gen1/smi.h
+++ b/src/cpu/intel/smm/gen1/smi.h
@@ -19,3 +19,5 @@ u32 northbridge_get_tseg_base(void);
u32 northbridge_get_tseg_size(void);
int cpu_get_apic_id_map(int *apic_id_map);
void northbridge_write_smram(u8 smram);
+
+bool cpu_has_alternative_smrr(void);
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)