Adds the following libraries:
- BasePchPciBdfLib
- BaseResetSystemLib
- PeiDxeSmmPchCycleDecodingLib
Cc: Sai Chaganty <rangasai.v.chaga...@intel.com>
Cc: Nate DeSimone <nathaniel.l.desim...@intel.com>
Cc: Isaac Oram <isaac.w.o...@intel.com>
Cc: Rosen Chuang <rosen.chu...@intel.com>
Signed-off-by: Saloni Kasbekar <saloni.kasbe...@intel.com>
---
.../BasePchPciBdfLib/BasePchPciBdfLib.inf | 32 ++
.../Library/BasePchPciBdfLib/PchPciBdfLib.c | 308 ++++++++++++++++++
.../BaseResetSystemLib/BaseResetSystemLib.c | 114 +++++++
.../BaseResetSystemLib/BaseResetSystemLib.inf | 37 +++
.../PchCycleDecodingLib.c | 194 +++++++++++
.../PeiDxeSmmPchCycleDecodingLib.inf | 41 +++
6 files changed, 726 insertions(+)
create mode 100644
Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BasePchPciBdfLib/BasePchPciBdfLib.inf
create mode 100644
Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BasePchPciBdfLib/PchPciBdfLib.c
create mode 100644
Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BaseResetSystemLib/BaseResetSystemLib.c
create mode 100644
Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BaseResetSystemLib/BaseResetSystemLib.inf
create mode 100644
Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/PeiDxeSmmPchCycleDecodingLib/PchCycleDecodingLib.c
create mode 100644
Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/PeiDxeSmmPchCycleDecodingLib/PeiDxeSmmPchCycleDecodingLib.inf
diff --git
a/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BasePchPciBdfLib/BasePchPciBdfLib.inf
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BasePchPciBdfLib/BasePchPciBdfLib.inf
new file mode 100644
index 0000000000..e65f564c1b
--- /dev/null
+++
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BasePchPciBdfLib/BasePchPciBdfLib.inf
@@ -0,0 +1,32 @@
+## @file
+# PCH PCIe Bus Device Function Library.
+#
+# All functions from this library are available in PEI, DXE, and SMM,
+# But do not support UEFI RUNTIME environment call.
+#
+# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+[Defines]
+INF_VERSION = 0x00010017
+BASE_NAME = PeiDxeSmmPchPciBdfLib
+FILE_GUID = A36363FC-2951-4DCF-AC81-16F4ED3FDA47
+VERSION_STRING = 1.0
+MODULE_TYPE = BASE
+LIBRARY_CLASS = PchPciBdfLib
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+PciSegmentLib
+PchInfoLib
+PchPcieRpLib
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+[Sources]
+PchPciBdfLib.c
diff --git
a/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BasePchPciBdfLib/PchPciBdfLib.c
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BasePchPciBdfLib/PchPciBdfLib.c
new file mode 100644
index 0000000000..c26625e2eb
--- /dev/null
+++
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BasePchPciBdfLib/PchPciBdfLib.c
@@ -0,0 +1,308 @@
+/** @file
+ PCH PCIe Bus Device Function Library.
+ All functions from this library are available in PEI, DXE, and SMM,
+ But do not support UEFI RUNTIME environment call.
+
+ Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Base.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PciSegmentLib.h>
+#include <Library/PchInfoLib.h>
+#include <Library/PchPcieRpLib.h>
+#include <Register/PchRegs.h>
+#include <PchBdfAssignment.h>
+
+/**
+ Check if a Device is present for PCH FRU
+ If the data is defined for PCH RFU return it
+ If the data is not defined (Device is NOT present) assert.
+
+ @param[in] DataToCheck Device or Function number to check
+
+ @retval Device or Function number value if defined for PCH FRU
+ 0xFF if not present in PCH FRU
+**/
+UINT8
+CheckAndReturn (
+ UINT8 DataToCheck
+ )
+{
+ if (DataToCheck == NOT_PRESENT) {
+ ASSERT (FALSE);
+ }
+ return DataToCheck;
+}
+
+/**
+ Get P2SB PCI device number
+
+ @retval PCI dev number
+**/
+UINT8
+P2sbDevNumber (
+ VOID
+ )
+{
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_P2SB);
+}
+
+/**
+ Get P2SB PCI function number
+
+ @retval PCI fun number
+**/
+UINT8
+P2sbFuncNumber (
+ VOID
+ )
+{
+ return CheckAndReturn (PCI_FUNCTION_NUMBER_PCH_P2SB);
+}
+
+/**
+ Get P2SB controller address that can be passed to the PCI Segment Library
functions.
+
+ @retval P2SB controller address in PCI Segment Library representation
+**/
+UINT64
+P2sbPciCfgBase (
+ VOID
+ )
+{
+ return PCI_SEGMENT_LIB_ADDRESS (
+ DEFAULT_PCI_SEGMENT_NUMBER_PCH,
+ DEFAULT_PCI_BUS_NUMBER_PCH,
+ P2sbDevNumber (),
+ P2sbFuncNumber (),
+ 0
+ );
+}
+
+
+
+/**
+ Returns PCH SPI Device number
+
+ @retval UINT8 PCH SPI Device number
+**/
+UINT8
+SpiDevNumber (
+ VOID
+ )
+{
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_SPI);
+}
+
+/**
+ Returns PCH SPI Function number
+
+ @retval UINT8 PCH SPI Function number
+**/
+UINT8
+SpiFuncNumber (
+ VOID
+ )
+{
+ return CheckAndReturn (PCI_FUNCTION_NUMBER_PCH_SPI);
+}
+
+/**
+ Returns PCH SPI PCI Config Space base address
+
+ @retval UINT64 PCH SPI Config Space base address
+**/
+UINT64
+SpiPciCfgBase (
+ VOID
+ )
+{
+ return PCI_SEGMENT_LIB_ADDRESS (
+ DEFAULT_PCI_SEGMENT_NUMBER_PCH,
+ DEFAULT_PCI_BUS_NUMBER_PCH,
+ SpiDevNumber (),
+ SpiFuncNumber (),
+ 0
+ );
+}
+
+/**
+ Get XHCI controller PCIe Device Number
+
+ @retval XHCI controller PCIe Device Number
+**/
+UINT8
+PchXhciDevNumber (
+ VOID
+ )
+{
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_XHCI);
+}
+
+/**
+ Get XHCI controller PCIe Function Number
+
+ @retval XHCI controller PCIe Function Number
+**/
+UINT8
+PchXhciFuncNumber (
+ VOID
+ )
+{
+ return CheckAndReturn (PCI_FUNCTION_NUMBER_PCH_XHCI);
+}
+
+/**
+ Get LPC controller PCIe Device Number
+
+ @retval LPC controller PCIe Device Number
+**/
+UINT8
+LpcDevNumber (
+ VOID
+ )
+{
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_LPC);
+}
+
+/**
+ Get LPC controller PCIe Function Number
+
+ @retval LPC controller PCIe Function Number
+**/
+UINT8
+LpcFuncNumber (
+ VOID
+ )
+{
+ return CheckAndReturn (PCI_FUNCTION_NUMBER_PCH_LPC);
+}
+
+/**
+ Returns PCH LPC device PCI base address.
+
+ @retval PCH LPC PCI base address.
+**/
+UINT64
+LpcPciCfgBase (
+ VOID
+ )
+{
+ return PCI_SEGMENT_LIB_ADDRESS (
+ DEFAULT_PCI_SEGMENT_NUMBER_PCH,
+ DEFAULT_PCI_BUS_NUMBER_PCH,
+ LpcDevNumber (),
+ LpcFuncNumber (),
+ 0
+ );
+}
+
+
+
+/**
+ Get PCH PCIe controller PCIe Device Number
+
+ @param[in] RpIndex Root port physical number. (0-based)
+
+ @retval PCH PCIe controller PCIe Device Number
+**/
+UINT8
+PchPcieRpDevNumber (
+ IN UINTN RpIndex
+ )
+{
+ switch (RpIndex) {
+ case 0:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_1);
+ case 1:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_2);
+ case 2:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_3);
+ case 3:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_4);
+ case 4:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_5);
+ case 5:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_6);
+ case 6:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_7);
+ case 7:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_8);
+ case 8:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_9);
+ case 9:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_10);
+ case 10:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_11);
+ case 11:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_12);
+ case 12:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_13);
+ case 13:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_14);
+ case 14:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_15);
+ case 15:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_16);
+ case 16:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_17);
+ case 17:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_18);
+ case 18:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_19);
+ case 19:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_20);
+ case 20:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_21);
+ case 21:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_22);
+ case 22:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_23);
+ case 23:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_24);
+ case 24:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_25);
+ case 25:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_26);
+ case 26:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_27);
+ case 27:
+ return CheckAndReturn (PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORT_28);
+
+ default:
+ ASSERT (FALSE);
+ return 0xFF;
+ }
+}
+
+/**
+ Get PCH PCIe controller PCIe Function Number
+ Note:
+ For Client PCH generations Function Number can be various
+ depending on "Root Port Function Swapping". For such cases
+ Function Number MUST be obtain from proper register.
+ For Server PCHs we have no "Root Port Function Swapping"
+ and we can return fixed Function Number.
+ To address this difference in this, PCH generation independent,
+ library we should call specific function in PchPcieRpLib.
+
+ @param[in] RpIndex Root port physical number. (0-based)
+
+ @retval PCH PCIe controller PCIe Function Number
+**/
+UINT8
+PchPcieRpFuncNumber (
+ IN UINTN RpIndex
+ )
+{
+ UINTN Device;
+ UINTN Function;
+
+ GetPchPcieRpDevFun (RpIndex, &Device, &Function);
+
+ return (UINT8)Function;
+}
+
diff --git
a/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BaseResetSystemLib/BaseResetSystemLib.c
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BaseResetSystemLib/BaseResetSystemLib.c
new file mode 100644
index 0000000000..86eeff9407
--- /dev/null
+++
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BaseResetSystemLib/BaseResetSystemLib.c
@@ -0,0 +1,114 @@
+/** @file
+ System reset library services.
+
+ Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+#include <Uefi.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/ResetSystemLib.h>
+#include <Library/PmcLib.h>
+#include <Library/BaseLib.h>
+#include <Register/PchRegsLpc.h>
+#include <Register/PmcRegs.h>
+
+/**
+ Calling this function causes a system-wide reset. This sets
+ all circuitry within the system to its initial state. This type of reset
+ is asynchronous to system operation and operates without regard to
+ cycle boundaries.
+
+ System reset should not return, if it returns, it means the system does
+ not support cold reset.
+**/
+VOID
+EFIAPI
+ResetCold (
+ VOID
+ )
+{
+ IoWrite8 (R_PCH_IO_RST_CNT, V_PCH_IO_RST_CNT_FULLRESET);
+}
+
+/**
+ Calling this function causes a system-wide initialization. The processors
+ are set to their initial state, and pending cycles are not corrupted.
+
+ System reset should not return, if it returns, it means the system does
+ not support warm reset.
+**/
+VOID
+EFIAPI
+ResetWarm (
+ VOID
+ )
+{
+ IoWrite8 (R_PCH_IO_RST_CNT, V_PCH_IO_RST_CNT_HARDRESET);
+}
+
+/**
+ Calling this function causes the system to enter a power state equivalent
+ to the ACPI G2/S5 or G3 states.
+
+ System shutdown should not return, if it returns, it means the system does
+ not support shut down reset.
+**/
+VOID
+EFIAPI
+ResetShutdown (
+ VOID
+ )
+{
+ UINT16 ABase;
+ UINT32 Data32;
+
+ ABase = PmcGetAcpiBase ();
+
+ ///
+ /// Firstly, GPE0_EN should be disabled to avoid any GPI waking up the
system from S5
+ ///
+ IoWrite32 (ABase + R_ACPI_IO_GPE0_EN_127_96, 0);
+
+ ///
+ /// Secondly, PwrSts register must be cleared
+ ///
+ /// Write a "1" to bit[8] of power button status register at
+ /// (PM_BASE + PM1_STS_OFFSET) to clear this bit
+ ///
+ IoWrite16 (ABase + R_ACPI_IO_PM1_STS, B_ACPI_IO_PM1_STS_PWRBTN);
+
+ ///
+ /// Finally, transform system into S5 sleep state
+ ///
+ Data32 = IoRead32 (ABase + R_ACPI_IO_PM1_CNT);
+
+ Data32 = (UINT32) ((Data32 &~(B_ACPI_IO_PM1_CNT_SLP_TYP +
B_ACPI_IO_PM1_CNT_SLP_EN)) | V_ACPI_IO_PM1_CNT_S5);
+
+ IoWrite32 (ABase + R_ACPI_IO_PM1_CNT, Data32);
+
+ Data32 = Data32 | B_ACPI_IO_PM1_CNT_SLP_EN;
+
+ IoWrite32 (ABase + R_ACPI_IO_PM1_CNT, Data32);
+
+ return;
+}
+
+/**
+ Calling this function causes the system to enter a power state for platform
specific.
+
+ @param[in] DataSize The size of ResetData in bytes.
+ @param[in] ResetData Optional element used to introduce a
platform specific reset.
+ The exact type of the reset is defined by
the EFI_GUID that follows
+ the Null-terminated Unicode string.
+
+**/
+VOID
+EFIAPI
+ResetPlatformSpecific (
+ IN UINTN DataSize,
+ IN VOID *ResetData OPTIONAL
+ )
+{
+ IoWrite8 (R_PCH_IO_RST_CNT, V_PCH_IO_RST_CNT_FULLRESET);
+}
diff --git
a/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BaseResetSystemLib/BaseResetSystemLib.inf
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BaseResetSystemLib/BaseResetSystemLib.inf
new file mode 100644
index 0000000000..f0a987d671
--- /dev/null
+++
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/BaseResetSystemLib/BaseResetSystemLib.inf
@@ -0,0 +1,37 @@
+## @file
+# Component description file for Intel Ich7 Reset System Library.
+#
+# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+[Defines]
+INF_VERSION = 0x00010017
+BASE_NAME = BaseResetSystemLib
+FILE_GUID = D4FF05AA-3C7D-4B8A-A1EE-AA5EFA0B1732
+VERSION_STRING = 1.0
+MODULE_TYPE = BASE
+UEFI_SPECIFICATION_VERSION = 2.00
+LIBRARY_CLASS = ResetSystemLib
+
+#
+# The following information is for reference only and not required by the
build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF
+#
+
+[LibraryClasses]
+IoLib
+BaseLib
+DebugLib
+PmcLib
+
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+BaseResetSystemLib.c
+
diff --git
a/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/PeiDxeSmmPchCycleDecodingLib/PchCycleDecodingLib.c
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/PeiDxeSmmPchCycleDecodingLib/PchCycleDecodingLib.c
new file mode 100644
index 0000000000..ccdac7c5ab
--- /dev/null
+++
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/PeiDxeSmmPchCycleDecodingLib/PchCycleDecodingLib.c
@@ -0,0 +1,194 @@
+/** @file
+ PCH cycle decoding configuration and query library.
+
+ Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+#include <Base.h>
+#include <Uefi/UefiBaseType.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseLib.h>
+#include <Library/PciSegmentLib.h>
+#include <Library/PchInfoLib.h>
+#include <Library/PchPcrLib.h>
+#include <Library/PchCycleDecodingLib.h>
+#include <Library/PchDmiLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Register/PchRegs.h>
+#include <Register/PchRegsLpc.h>
+#include <Register/SpiRegs.h>
+#include <Library/EspiLib.h>
+#include <Library/PchPciBdfLib.h>
+
+typedef enum {
+ SlaveLpcEspiCS0,
+ SlaveEspiCS1,
+ SlaveId_Max
+} SLAVE_ID_INDEX;
+
+/**
+ Get PCH TCO base address.
+
+ @param[out] Address Address of TCO base address.
+
+ @retval EFI_SUCCESS Successfully completed.
+ @retval EFI_INVALID_PARAMETER Invalid pointer passed.
+**/
+EFI_STATUS
+PchTcoBaseGet (
+ OUT UINT16 *Address
+ )
+{
+ if (Address == NULL) {
+ DEBUG ((DEBUG_ERROR, "PchTcoBaseGet Error. Invalid pointer.\n"));
+ ASSERT (FALSE);
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // Read "TCO Base Address" from DMI
+ // Don't read TCO base address from SMBUS PCI register since SMBUS might be
disabled.
+ //
+ *Address = PchDmiGetTcoBase ();
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Set PCH LPC/eSPI IO decode ranges.
+ Program LPC/eSPI I/O Decode Ranges in DMI to the same value programmed in
LPC/eSPI PCI offset 80h.
+ Please check EDS for detail of LPC/eSPI IO decode ranges bit definition.
+ Bit 12: FDD range
+ Bit 9:8: LPT range
+ Bit 6:4: ComB range
+ Bit 2:0: ComA range
+
+ @param[in] LpcIoDecodeRanges LPC/eSPI IO decode ranges bit settings.
+
+ @retval EFI_SUCCESS Successfully completed.
+ @retval EFI_UNSUPPORTED DMIC.SRL is set.
+**/
+EFI_STATUS
+PchLpcIoDecodeRangesSet (
+ IN UINT16 LpcIoDecodeRanges
+ )
+{
+ UINT64 LpcBaseAddr;
+ EFI_STATUS Status;
+
+ //
+ // Note: Inside this function, don't use debug print since it's could used
before debug print ready.
+ //
+
+ LpcBaseAddr = LpcPciCfgBase ();
+
+ //
+ // check if setting is identical
+ //
+ if (LpcIoDecodeRanges == PciSegmentRead16 (LpcBaseAddr + R_LPC_CFG_IOD)) {
+ return EFI_SUCCESS;
+ }
+
+ Status = PchDmiSetLpcIoDecodeRanges (LpcIoDecodeRanges);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ return Status;
+ }
+
+ //
+ // program LPC/eSPI PCI offset 80h.
+ //
+ PciSegmentWrite16 (LpcBaseAddr + R_LPC_CFG_IOD, LpcIoDecodeRanges);
+
+ return Status;
+}
+
+/**
+ Set PCH LPC/eSPI and eSPI CS1# IO enable decoding.
+ Setup I/O Enables in DMI to the same value program in LPC/eSPI PCI offset
82h (LPC, eSPI CS0#) or A0h (eSPI CS1#).
+ Note: Bit[15:10] of the source decode register is Read-Only. The IO range
indicated by the Enables field
+ in LPC/eSPI PCI offset 82h[13:10] or A0h[13:10] is always forwarded by DMI
to subtractive agent for handling.
+ Please check EDS for detail of Lpc/eSPI IO decode ranges bit definition.
+
+ @param[in] IoEnableDecoding LPC/eSPI IO enable decoding bit
settings.
+ @param[in] SlaveId Target ID (refer to SLAVE_ID_INDEX)
+
+ @retval EFI_SUCCESS Successfully completed.
+ @retval EFI_UNSUPPORTED DMI configuration is locked
+**/
+EFI_STATUS
+LpcEspiIoEnableDecodingSetHelper (
+ IN UINT16 IoEnableDecoding,
+ IN SLAVE_ID_INDEX SlaveId
+ )
+{
+ UINT64 LpcBaseAddr;
+ EFI_STATUS Status;
+ UINT16 Cs1IoEnableDecodingOrg;
+ UINT16 Cs0IoEnableDecodingOrg;
+ UINT16 IoEnableDecodingMerged;
+
+ LpcBaseAddr = LpcPciCfgBase ();
+
+ Cs0IoEnableDecodingOrg = PciSegmentRead16 (LpcBaseAddr + R_LPC_CFG_IOE);
+
+ if (IsEspiSecondSlaveSupported ()) {
+ Cs1IoEnableDecodingOrg = PciSegmentRead16 (LpcBaseAddr +
R_ESPI_CFG_CS1IORE);
+ } else {
+ Cs1IoEnableDecodingOrg = 0;
+ }
+
+ if (SlaveId == SlaveEspiCS1) {
+ if (IoEnableDecoding == Cs1IoEnableDecodingOrg) {
+ return EFI_SUCCESS;
+ } else {
+ IoEnableDecodingMerged = (Cs0IoEnableDecodingOrg | IoEnableDecoding);
+ }
+ } else {
+ if ((IoEnableDecoding | Cs1IoEnableDecodingOrg) == Cs0IoEnableDecodingOrg)
{
+ return EFI_SUCCESS;
+ } else {
+ IoEnableDecodingMerged = (Cs1IoEnableDecodingOrg | IoEnableDecoding);
+ }
+ }
+
+ Status = PchDmiSetLpcIoEnable (IoEnableDecodingMerged);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ return Status;
+ }
+
+ //
+ // program PCI offset 82h for LPC/eSPI.
+ //
+ PciSegmentWrite16 (LpcBaseAddr + R_LPC_CFG_IOE, IoEnableDecodingMerged);
+
+ if (SlaveId == SlaveEspiCS1) {
+ //
+ // For eSPI CS1# device program eSPI PCI offset A0h.
+ //
+ PciSegmentWrite16 (LpcBaseAddr + R_ESPI_CFG_CS1IORE, IoEnableDecoding);
+ }
+
+ return Status;
+}
+
+/**
+ Set PCH LPC and eSPI CS0# IO enable decoding.
+ Setup I/O Enables in DMI to the same value program in LPC/eSPI PCI offset
82h.
+ Note: Bit[15:10] of the source decode register is Read-Only. The IO range
indicated by the Enables field
+ in LPC/eSPI PCI offset 82h[13:10] is always forwarded by DMI to subtractive
agent for handling.
+ Please check EDS for detail of LPC/eSPI IO decode ranges bit definition.
+
+ @param[in] LpcIoEnableDecoding LPC IO enable decoding bit settings.
+
+ @retval EFI_SUCCESS Successfully completed.
+ @retval EFI_UNSUPPORTED DMIC.SRL is set.
+**/
+EFI_STATUS
+PchLpcIoEnableDecodingSet (
+ IN UINT16 LpcIoEnableDecoding
+ )
+{
+ return LpcEspiIoEnableDecodingSetHelper (LpcIoEnableDecoding,
SlaveLpcEspiCS0);
+}
diff --git
a/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/PeiDxeSmmPchCycleDecodingLib/PeiDxeSmmPchCycleDecodingLib.inf
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/PeiDxeSmmPchCycleDecodingLib/PeiDxeSmmPchCycleDecodingLib.inf
new file mode 100644
index 0000000000..a381c0f0f7
--- /dev/null
+++
b/Silicon/Intel/AlderlakeSiliconPkg/Pch/Library/PeiDxeSmmPchCycleDecodingLib/PeiDxeSmmPchCycleDecodingLib.inf
@@ -0,0 +1,41 @@
+## @file
+# PCH cycle decoding Lib.
+#
+# All function in this library is available for PEI, DXE, and SMM,
+# But do not support UEFI RUNTIME environment call.
+#
+# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+
+[Defines]
+INF_VERSION = 0x00010017
+BASE_NAME = PeiDxeSmmPchCycleDecodingLib
+FILE_GUID = 676C749F-9CD1-46B7-BAFD-4B1BC36B4C8E
+VERSION_STRING = 1.0
+MODULE_TYPE = BASE
+LIBRARY_CLASS = PchCycleDecodingLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+PciSegmentLib
+PchInfoLib
+PchPcrLib
+PchDmiLib
+EspiLib
+PchPciBdfLib
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+[Sources]
+PchCycleDecodingLib.c
+
+[Pcd]
+gSiPkgTokenSpaceGuid.PcdSiHpetBaseAddress ## CONSUMES
+gSiPkgTokenSpaceGuid.PcdSiIoApicBaseAddress ## CONSUMES
--
2.36.1.windows.1
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