diff options
Diffstat (limited to 'src/soc/intel/cannonlake')
| -rw-r--r-- | src/soc/intel/cannonlake/cpu.c | 8 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/include/soc/msr.h | 2 |
2 files changed, 10 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/cpu.c b/src/soc/intel/cannonlake/cpu.c index 4f6720850e..6af3e1a56f 100644 --- a/src/soc/intel/cannonlake/cpu.c +++ b/src/soc/intel/cannonlake/cpu.c @@ -20,6 +20,14 @@ #include "chip.h" +bool cpu_soc_is_in_untrusted_mode(void) +{ + msr_t msr; + + msr = rdmsr(MSR_BIOS_DONE); + return !!(msr.lo & ENABLE_IA_UNTRUSTED); +} + static void soc_fsp_load(void) { fsps_load(); diff --git a/src/soc/intel/cannonlake/include/soc/msr.h b/src/soc/intel/cannonlake/include/soc/msr.h index 1c902d5abb..cc95fe6845 100644 --- a/src/soc/intel/cannonlake/include/soc/msr.h +++ b/src/soc/intel/cannonlake/include/soc/msr.h @@ -5,6 +5,8 @@ #include <intelblocks/msr.h> +#define MSR_BIOS_DONE 0x151 +#define ENABLE_IA_UNTRUSTED (1 << 0) #define MSR_VR_CURRENT_CONFIG 0x601 #define MSR_PL3_CONTROL 0x615 #define MSR_VR_MISC_CONFIG2 0x636 |