diff options
Diffstat (limited to 'src/soc/intel/common/block/smm')
| -rw-r--r-- | src/soc/intel/common/block/smm/smm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/smm/smm.c b/src/soc/intel/common/block/smm/smm.c index e8c52459a1..6059995493 100644 --- a/src/soc/intel/common/block/smm/smm.c +++ b/src/soc/intel/common/block/smm/smm.c @@ -46,6 +46,15 @@ void smm_southbridge_enable(uint16_t pm1_events) pmc_disable_std_gpe(PME_B0_EN); /* + * GPEs need to be disabled before enabling SMI. Otherwise, it could + * lead to SMIs being triggered in coreboot preventing the progress of + * normal boot-up. This is done as late as possible so that + * pmc_fill_power_state can read the correct state of GPE0_EN* registers + * and not lose information about the wake source. + */ + pmc_disable_all_gpe(); + + /* * Enable SMI generation: * - on APMC writes (io 0xb2) * - on writes to SLP_EN (sleep states) |