diff options
Diffstat (limited to 'src/soc/intel/skylake')
| -rw-r--r-- | src/soc/intel/skylake/fspcar.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/src/soc/intel/skylake/fspcar.c b/src/soc/intel/skylake/fspcar.c index a4c3726492..0d27f57698 100644 --- a/src/soc/intel/skylake/fspcar.c +++ b/src/soc/intel/skylake/fspcar.c @@ -23,10 +23,19 @@ const FSPT_UPD temp_ram_init_params = { .Reserved = {0}, }, .FsptCoreUpd = { - .MicrocodeRegionBase = - (uint32_t)CONFIG_CPU_MICROCODE_CBFS_LOC, - .MicrocodeRegionSize = - (uint32_t)CONFIG_CPU_MICROCODE_CBFS_LEN, + /* + * It is a requirement for firmware to have Firmware Interface Table + * (FIT), which contains pointers to each microcode update. + * The microcode update is loaded for all logical processors before + * cpu reset vector. + * + * All SoC since Gen-4 has above mechanism in place to load microcode + * even before hitting CPU reset vector. Hence skipping FSP-T loading + * microcode after CPU reset by passing '0' value to + * FSPT_UPD.MicrocodeRegionBase and FSPT_UPD.MicrocodeRegionLength. + */ + .MicrocodeRegionBase = 0, + .MicrocodeRegionLength = 0, .CodeRegionBase = (uint32_t)(0x100000000ULL - CONFIG_ROM_SIZE), .CodeRegionSize = (uint32_t)CONFIG_ROM_SIZE, |