diff options
Diffstat (limited to 'src/soc/intel/common/block/smm')
| -rw-r--r-- | src/soc/intel/common/block/smm/Kconfig | 7 | ||||
| -rw-r--r-- | src/soc/intel/common/block/smm/smihandler.c | 4 | ||||
| -rw-r--r-- | src/soc/intel/common/block/smm/smm.c | 16 |
3 files changed, 9 insertions, 18 deletions
diff --git a/src/soc/intel/common/block/smm/Kconfig b/src/soc/intel/common/block/smm/Kconfig index cc6bc44f58..a58c63102d 100644 --- a/src/soc/intel/common/block/smm/Kconfig +++ b/src/soc/intel/common/block/smm/Kconfig @@ -8,13 +8,12 @@ config SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP help Intel Processor trap flag if it is supported -config SOC_INTEL_COMMON_BLOCK_SMM_ESPI_ACPI_DIS +config SOC_INTEL_COMMON_BLOCK_SMM_ESPI_DISABLE bool default n help - Disable eSPI SMI when ACPI mode is enabled. This will - prevent the embedded controller from asserting SMI when - booted into an ACPI aware OS. + Disable eSPI SMI source to prevent the embedded controller + from asserting SMI while in firmware. config SOC_INTEL_COMMON_BLOCK_SMM_S5_DELAY_MS int diff --git a/src/soc/intel/common/block/smm/smihandler.c b/src/soc/intel/common/block/smm/smihandler.c index 16bb3a2d1d..7aa69c5c65 100644 --- a/src/soc/intel/common/block/smm/smihandler.c +++ b/src/soc/intel/common/block/smm/smihandler.c @@ -361,14 +361,10 @@ void smihandler_southbridge_apmc( break; case APM_CNT_ACPI_DISABLE: pmc_disable_pm1_control(SCI_EN); - if (CONFIG(SOC_INTEL_COMMON_BLOCK_SMM_ESPI_ACPI_DIS)) - pmc_enable_smi(ESPI_SMI_EN); printk(BIOS_DEBUG, "SMI#: ACPI disabled.\n"); break; case APM_CNT_ACPI_ENABLE: pmc_enable_pm1_control(SCI_EN); - if (CONFIG(SOC_INTEL_COMMON_BLOCK_SMM_ESPI_ACPI_DIS)) - pmc_disable_smi(ESPI_SMI_EN); printk(BIOS_DEBUG, "SMI#: ACPI enabled.\n"); break; case APM_CNT_GNVS_UPDATE: diff --git a/src/soc/intel/common/block/smm/smm.c b/src/soc/intel/common/block/smm/smm.c index dd8bab3483..75b933e0e9 100644 --- a/src/soc/intel/common/block/smm/smm.c +++ b/src/soc/intel/common/block/smm/smm.c @@ -41,6 +41,8 @@ void smm_southbridge_clear_state(void) void smm_southbridge_enable(uint16_t pm1_events) { + uint32_t smi_params = ENABLE_SMI_PARAMS; + printk(BIOS_DEBUG, "Enabling SMIs.\n"); /* Configure events */ pmc_enable_pm1(pm1_events); @@ -60,14 +62,16 @@ void smm_southbridge_enable(uint16_t pm1_events) * - on APMC writes (io 0xb2) * - on writes to SLP_EN (sleep states) * - on writes to GBL_RLS (bios commands) - * - on eSPI events (does nothing on LPC systems) + * - on eSPI events, unless disabled (does nothing on LPC systems) * No SMIs: * - on microcontroller writes (io 0x62/0x66) * - on TCO events */ + if (CONFIG(SOC_INTEL_COMMON_BLOCK_SMM_ESPI_DISABLE)) + smi_params &= ~ESPI_SMI_EN; /* Enable SMI generation: */ - pmc_enable_smi(ENABLE_SMI_PARAMS); + pmc_enable_smi(smi_params); } void smm_setup_structures(void *gnvs, void *tcg, void *smi1) @@ -94,11 +98,3 @@ void smm_region_info(void **start, size_t *size) *start = (void *)sa_get_tseg_base(); *size = sa_get_tseg_size(); } - -#if CONFIG(SOC_INTEL_COMMON_BLOCK_SMM_ESPI_ACPI_DIS) -static void smm_disable_espi(void *dest) -{ - pmc_disable_smi(ESPI_SMI_EN); -} -BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, smm_disable_espi, NULL); -#endif |