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[CFL] Fix the PMI_STS clear logic (#340) 

Current logic enables all EN bits in PMI_EN in order
to clear single PWRBTN_EN bit. This should not happen.
Corrected the logic so that only PWRBTN_EN is cleared and
the other EN bits are untouched.

Signed-off-by: Sai Talamudupula <sai.kiran.talamudupula@intel.com>
This commit is contained in:
stalamudupula 2019-10-01 17:59:52 -07:00 committed by Aiden Park
parent cb853f876b
commit fbd45e70b0
1 changed files with 1 additions and 1 deletions
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2
Platform/CoffeelakeBoardPkg/Library/Stage1BBoardInitLib/Stage1BBoardInitLib.c
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@ -462,7 +462,7 @@ GetPlatformPowerState (
/// Clear Wake Status /// Clear Wake Status
/// Also clear the PWRBTN_EN, it causes SMI# otherwise (SCI_EN is 0) /// Also clear the PWRBTN_EN, it causes SMI# otherwise (SCI_EN is 0)
/// ///
IoWrite32 (ACPI_BASE_ADDRESS + R_ACPI_IO_PM1_STS, ((UINT32)~B_ACPI_IO_PM1_EN_PWRBTN_EN & R_ACPI_IO_PM1_EN_MASK) | B_ACPI_IO_PM1_STS_WAK ); IoAndThenOr32 (ACPI_BASE_ADDRESS + R_ACPI_IO_PM1_STS, (UINT32)~B_ACPI_IO_PM1_EN_PWRBTN_EN, B_ACPI_IO_PM1_STS_WAK);
if ((MmioRead8 (PCH_PWRM_BASE_ADDRESS + R_PMC_PWRM_GEN_PMCON_B) & B_PMC_PWRM_GEN_PMCON_B_RTC_PWR_STS) != 0) { if ((MmioRead8 (PCH_PWRM_BASE_ADDRESS + R_PMC_PWRM_GEN_PMCON_B) & B_PMC_PWRM_GEN_PMCON_B_RTC_PWR_STS) != 0) {
BootMode = BOOT_WITH_FULL_CONFIGURATION; BootMode = BOOT_WITH_FULL_CONFIGURATION;