Pushed: https://github.com/tianocore/edk2-platforms/commit/d410a0a
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Nate
> DeSimone
> Sent: Wednesday, August 11, 2021 6:22 PM
> To: devel@edk2.groups.io
> Cc: Desimone, Nathaniel L <nathaniel.l.desim...@intel.com>; Michael
> Kubacki <michael.kuba...@microsoft.com>; Chiu, Chasel
> <chasel.c...@intel.com>; Chaganty, Rangasai V
> <rangasai.v.chaga...@intel.com>; Benjamin Doron
> <benjamin.doro...@gmail.com>
> Subject: [edk2-devel] [edk2-platforms][PATCH v1]
> KabylakeSiliconPkg/PchPmcLib: Add GetSleepTypeAfterWakeup()
>
> From: Michael Kubacki <michael.kuba...@microsoft.com>
>
> Adds the capability to get the system sleep type after wakeup to PchPmcLib
> in KabylakeSiliconPkg.
>
> This is needed by platforms to determine the Sx resume state.
>
> Cc: Chasel Chiu <chasel.c...@intel.com>
> Cc: Sai Chaganty <rangasai.v.chaga...@intel.com>
> Cc: Nate DeSimone <nathaniel.l.desim...@intel.com>
> Cc: Benjamin Doron <benjamin.doro...@gmail.com>
> Signed-off-by: Michael Kubacki <michael.kuba...@microsoft.com>
> ---
>
> Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/PchPmc
> Lib.c | 54 ++++++++++++++++++++
> Silicon/Intel/KabylakeSiliconPkg/Pch/Include/Library/PchPmcLib.h
> | 15 ++++++
>
> Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/PeiDxeS
> mmPchPmcLib.inf | 4 ++
> 3 files changed, 73 insertions(+)
>
> diff --git
> a/Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/PchP
> mcLib.c
> b/Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/PchP
> mcLib.c
> index 790af0a7a1..3c9c4c2a2d 100644
> ---
> a/Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/PchP
> mcLib.c
> +++
> b/Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/Pc
> +++ hPmcLib.c
> @@ -128,3 +128,57 @@ PchIsRtcBatteryGood (
> }
> return FALSE;
> }
> +
> +/**
> + Returns the sleep type after system wakeup.
> +
> + @param[out] SleepType Sleep type to be returned.
> +
> + @retval TRUE A wake event occurred without power failure.
> + @retval FALSE Power failure occurred or not a wakeup.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +GetSleepTypeAfterWakeup (
> + OUT UINT32 *SleepType
> + )
> +{
> + UINT16 Pm1Sts;
> + UINT32 Pm1Cnt;
> + UINTN PmcBaseAddress;
> +
> + PmcBaseAddress = MmPciBase (
> + DEFAULT_PCI_BUS_NUMBER_PCH,
> + PCI_DEVICE_NUMBER_PCH_PMC,
> + PCI_FUNCTION_NUMBER_PCH_PMC
> + );
> +
> + ///
> + /// Read the ACPI registers
> + ///
> + Pm1Sts = IoRead16 (PcdGet16 (PcdAcpiBaseAddress) +
> + R_PCH_ACPI_PM1_STS); Pm1Cnt = IoRead32 (PcdGet16
> + (PcdAcpiBaseAddress) + R_PCH_ACPI_PM1_CNT);
> +
> + ///
> + /// Get sleep type if a wake event occurred and there is no power
> + failure and reset /// if ((Pm1Sts & B_PCH_ACPI_PM1_STS_WAK) != 0) {
> + if ((MmioRead16 (PmcBaseAddress + R_PCH_PMC_GEN_PMCON_B) &
> (B_PCH_PMC_GEN_PMCON_B_RTC_PWR_STS |
> B_PCH_PMC_GEN_PMCON_B_PWR_FLR)) == 0) {
> + *SleepType = Pm1Cnt & B_PCH_ACPI_PM1_CNT_SLP_TYP;
> +
> + return TRUE;
> + } else {
> + ///
> + /// Clear Wake Status (WAK_STS) and Sleep Type (SLP_TYP)
> + ///
> + IoWrite16 (PcdGet16 (PcdAcpiBaseAddress) + R_PCH_ACPI_PM1_STS,
> B_PCH_ACPI_PM1_STS_WAK);
> + Pm1Cnt &= ~B_PCH_ACPI_PM1_CNT_SLP_TYP;
> + IoWrite32 (PcdGet16 (PcdAcpiBaseAddress) + R_PCH_ACPI_PM1_CNT,
> + Pm1Cnt);
> +
> + return FALSE;
> + }
> + }
> +
> + return FALSE;
> +}
> diff --git a/Silicon/Intel/KabylakeSiliconPkg/Pch/Include/Library/PchPmcLib.h
> b/Silicon/Intel/KabylakeSiliconPkg/Pch/Include/Library/PchPmcLib.h
> index ec98e07100..f84606d31c 100644
> --- a/Silicon/Intel/KabylakeSiliconPkg/Pch/Include/Library/PchPmcLib.h
> +++ b/Silicon/Intel/KabylakeSiliconPkg/Pch/Include/Library/PchPmcLib.h
> @@ -41,4 +41,19 @@ PchIsRtcBatteryGood (
> VOID
> );
>
> +/**
> + Returns the sleep type after system wakeup.
> +
> + @param[out] SleepType Sleep type to be returned.
> +
> + @retval TRUE A wake event occurred without power failure.
> + @retval FALSE Power failure occurred or not a wakeup.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +GetSleepTypeAfterWakeup (
> + OUT UINT32 *SleepType
> + );
> +
> #endif // _PCH_PMC_LIB_H_
> diff --git
> a/Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/PeiDx
> eSmmPchPmcLib.inf
> b/Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/PeiDx
> eSmmPchPmcLib.inf
> index 8b46a59b67..1e6103f4ca 100644
> ---
> a/Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/PeiDx
> eSmmPchPmcLib.inf
> +++
> b/Silicon/Intel/KabylakeSiliconPkg/Pch/Library/PeiDxeSmmPchPmcLib/Pe
> +++ iDxeSmmPchPmcLib.inf
> @@ -33,5 +33,9 @@ MdePkg/MdePkg.dec
> KabylakeSiliconPkg/SiPkg.dec
>
>
> +[Pcd]
> +gSiPkgTokenSpaceGuid.PcdAcpiBaseAddress
> +
> +
> [Sources]
> PchPmcLib.c
> --
> 2.29.2.windows.2
>
>
>
>
>
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