diff options
Diffstat (limited to 'src/soc/intel/broadwell')
| -rw-r--r-- | src/soc/intel/broadwell/pch/smihandler.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/src/soc/intel/broadwell/pch/smihandler.c b/src/soc/intel/broadwell/pch/smihandler.c index c6632da4fa..542b330221 100644 --- a/src/soc/intel/broadwell/pch/smihandler.c +++ b/src/soc/intel/broadwell/pch/smihandler.c @@ -125,13 +125,9 @@ static void backlight_off(void) printk(BIOS_INFO, "Backlight turned off\n"); } -static void southbridge_smi_sleep(void) +static int power_on_after_fail(void) { - u8 reg8; - u32 reg32; - u8 slp_typ; u8 s5pwr = CONFIG_MAINBOARD_POWER_FAILURE_STATE; - u16 pmbase = get_pmbase(); /* save and recover RTC port values */ u8 tmp70, tmp72; @@ -141,6 +137,16 @@ static void southbridge_smi_sleep(void) outb(tmp70, 0x70); outb(tmp72, 0x72); + /* For "KEEP", switch to "OFF" - KEEP is software emulated. */ + return (s5pwr == MAINBOARD_POWER_ON); +} + +static void southbridge_smi_sleep(void) +{ + u32 reg32; + u8 slp_typ; + u16 pmbase = get_pmbase(); + /* First, disable further SMIs */ disable_smi(SLP_SMI_EN); @@ -190,15 +196,11 @@ static void southbridge_smi_sleep(void) /* Disable all GPE */ disable_all_gpe(); - /* Always set the flag in case CMOS was changed on runtime. For - * "KEEP", switch to "OFF" - KEEP is software emulated - */ - reg8 = pci_read_config8(PCH_DEV_LPC, GEN_PMCON_3); - if (s5pwr == MAINBOARD_POWER_ON) - reg8 &= ~1; + /* Always set the flag in case CMOS was changed on runtime. */ + if (power_on_after_fail()) + pci_and_config8(PCH_DEV_LPC, GEN_PMCON_3, ~1); else - reg8 |= 1; - pci_write_config8(PCH_DEV_LPC, GEN_PMCON_3, reg8); + pci_or_config8(PCH_DEV_LPC, GEN_PMCON_3, 1); /* also iterates over all bridges on bus 0 */ busmaster_disable_on_bus(0); |