diff options
Diffstat (limited to 'src/soc/intel/skylake/smihandler.c')
| -rw-r--r-- | src/soc/intel/skylake/smihandler.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/smihandler.c b/src/soc/intel/skylake/smihandler.c index 20c4109272..211432cd35 100644 --- a/src/soc/intel/skylake/smihandler.c +++ b/src/soc/intel/skylake/smihandler.c @@ -510,6 +510,13 @@ static smi_handler_t southbridge_smi[SMI_STS_BITS] = { [MONITOR_STS_BIT] = southbridge_smi_monitor, }; +#define SMI_HANDLER_SCI_EN(__bit) (1 << (__bit)) + +/* SMI handlers that should be serviced in SCI mode too. */ +uint32_t smi_handler_sci_mask = + SMI_HANDLER_SCI_EN(APM_STS_BIT) | + SMI_HANDLER_SCI_EN(SMI_ON_SLP_EN_STS_BIT); + /* * Interrupt handler for SMI# */ @@ -524,6 +531,17 @@ void southbridge_smi_handler(void) */ smi_sts = pmc_clear_smi_status(); + /* + * In SCI mode, execute only those SMI handlers that have + * declared themselves as available for service in that mode + * using smi_handler_sci_mask. + */ + if (pmc_read_pm1_control() & SCI_EN) + smi_sts &= smi_handler_sci_mask; + + if (!smi_sts) + return; + /* Call SMI sub handler for each of the status bits */ for (i = 0; i < ARRAY_SIZE(southbridge_smi); i++) { if (smi_sts & (1 << i)) { |