diff options
Diffstat (limited to 'src/cpu/amd/model_10xxx')
| -rw-r--r-- | src/cpu/amd/model_10xxx/model_10xxx_init.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/cpu/amd/model_10xxx/model_10xxx_init.c b/src/cpu/amd/model_10xxx/model_10xxx_init.c index a92852f521..2e8bbfe09d 100644 --- a/src/cpu/amd/model_10xxx/model_10xxx_init.c +++ b/src/cpu/amd/model_10xxx/model_10xxx_init.c @@ -24,6 +24,7 @@ #include <device/pci.h> #include <string.h> #include <cpu/x86/msr.h> +#include <cpu/x86/smm.h> #include <cpu/x86/pae.h> #include <pc80/mc146818rtc.h> #include <cpu/x86/lapic.h> @@ -118,7 +119,17 @@ static void model_10xxx_init(device_t dev) msr.hi &= ~(1 << (35-32)); wrmsr(BU_CFG2_MSR, msr); - /* Write protect SMM space with SMMLOCK. */ + /* Set SMM base address for this CPU */ + msr = rdmsr(SMM_BASE_MSR); + msr.lo = SMM_BASE - (lapicid() * 0x400); + wrmsr(SMM_BASE_MSR, msr); + + /* Enable the SMM memory window */ + msr = rdmsr(SMM_MASK_MSR); + msr.lo |= (1 << 0); /* Enable ASEG SMRAM Range */ + wrmsr(SMM_MASK_MSR, msr); + + /* Set SMMLOCK to avoid exploits messing with SMM */ msr = rdmsr(HWCR_MSR); msr.lo |= (1 << 0); wrmsr(HWCR_MSR, msr); |