diff options
Diffstat (limited to 'src/soc/intel/tigerlake')
| -rw-r--r-- | src/soc/intel/tigerlake/cpu.c | 8 | ||||
| -rw-r--r-- | src/soc/intel/tigerlake/include/soc/msr.h | 4 |
2 files changed, 11 insertions, 1 deletions
diff --git a/src/soc/intel/tigerlake/cpu.c b/src/soc/intel/tigerlake/cpu.c index a9aa8ffc53..d225c504c8 100644 --- a/src/soc/intel/tigerlake/cpu.c +++ b/src/soc/intel/tigerlake/cpu.c @@ -23,6 +23,14 @@ #include <soc/soc_chip.h> #include <types.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/tigerlake/include/soc/msr.h b/src/soc/intel/tigerlake/include/soc/msr.h index 954fce0a82..5bdbf92e8b 100644 --- a/src/soc/intel/tigerlake/include/soc/msr.h +++ b/src/soc/intel/tigerlake/include/soc/msr.h @@ -5,6 +5,8 @@ #include <intelblocks/msr.h> -#define MSR_VR_MISC_CONFIG2 0x636 +#define MSR_BIOS_DONE 0x151 +#define ENABLE_IA_UNTRUSTED (1 << 0) +#define MSR_VR_MISC_CONFIG2 0x636 #endif |