X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=SecurityPkg%2FTcg%2FTcg2Smm%2FTcg2Smm.c;h=4a1a293bfcd3dda32f46c7c61e1772db3dd69a75;hp=7557e29852c5287333ee3603963954f4b6a6887f;hb=831bb137a88a578262cf28d60096ad563bad3f7c;hpb=dd6d0a520eec0fd3fc455ac7345ac0c06095a511
diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
index 7557e29852..4a1a293bfc 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
@@ -9,69 +9,19 @@
PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.
-Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
+Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "Tcg2Smm.h"
-typedef enum {
- PtpInterfaceTis,
- PtpInterfaceFifo,
- PtpInterfaceCrb,
- PtpInterfaceMax,
-} PTP_INTERFACE_TYPE;
-
-/**
- Return PTP interface type.
-
- @param[in] Register Pointer to PTP register.
-
- @return PTP interface type.
-**/
-PTP_INTERFACE_TYPE
-GetPtpInterface (
- IN VOID *Register
- )
-{
- PTP_CRB_INTERFACE_IDENTIFIER InterfaceId;
- PTP_FIFO_INTERFACE_CAPABILITY InterfaceCapability;
-
- //
- // Check interface id
- //
- InterfaceId.Uint32 = MmioRead32 ((UINTN)&((PTP_CRB_REGISTERS *)Register)->InterfaceId);
- InterfaceCapability.Uint32 = MmioRead32 ((UINTN)&((PTP_FIFO_REGISTERS *)Register)->InterfaceCapability);
-
- if (InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_TIS) {
- return PtpInterfaceTis;
- }
-
- if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_CRB) &&
- (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_CRB) &&
- (InterfaceId.Bits.CapCRB != 0)) {
- return PtpInterfaceCrb;
- }
-
- if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_FIFO) &&
- (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_FIFO) &&
- (InterfaceId.Bits.CapFIFO != 0) &&
- (InterfaceCapability.Bits.InterfaceVersion == INTERFACE_CAPABILITY_INTERFACE_VERSION_PTP)) {
- return PtpInterfaceFifo;
- }
-
- //
- // No Ptp interface available
- //
- return PtpInterfaceMax;
-}
EFI_TPM2_ACPI_TABLE mTpm2AcpiTemplate = {
{
@@ -83,7 +33,8 @@ EFI_TPM2_ACPI_TABLE mTpm2AcpiTemplate = {
// These fields should be filled in in production
//
},
- 0, // Flags
+ 0, // BIT0~15: PlatformClass
+ // BIT16~31: Reserved
0, // Control Area
EFI_TPM2_ACPI_TABLE_START_METHOD_TIS, // StartMethod
};
@@ -131,7 +82,7 @@ PhysicalPresenceCallback (
mTcgNvs->PhysicalPresence.LastRequest = MostRecentRequest;
mTcgNvs->PhysicalPresence.Response = Response;
return EFI_SUCCESS;
- } else if ((mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS)
+ } else if ((mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS)
|| (mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS_2)) {
OperationRequest = mTcgNvs->PhysicalPresence.Request;
@@ -202,6 +153,10 @@ MemoryClearCallback (
return EFI_SUCCESS;
}
MorControl &= ~MOR_CLEAR_MEMORY_BIT_MASK;
+ } else {
+ mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;
+ DEBUG ((EFI_D_ERROR, "[TPM] MOR Parameter error! Parameter = %x\n", mTcgNvs->MemoryClear.Parameter));
+ return EFI_SUCCESS;
}
DataSize = sizeof (UINT8);
@@ -212,7 +167,7 @@ MemoryClearCallback (
DataSize,
&MorControl
);
- if (EFI_ERROR (Status)) {
+ if (EFI_ERROR (Status)) {
mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;
DEBUG ((EFI_D_ERROR, "[TPM] Set MOR variable failure! Status = %r\n", Status));
}
@@ -250,7 +205,7 @@ AssignOpRegion (
for (OpRegion = (AML_OP_REGION_32_8 *) (Table + 1);
OpRegion <= (AML_OP_REGION_32_8 *) ((UINT8 *) Table + Table->Length);
OpRegion = (AML_OP_REGION_32_8 *) ((UINT8 *) OpRegion + 1)) {
- if ((OpRegion->OpRegionOp == AML_EXT_REGION_OP) &&
+ if ((OpRegion->OpRegionOp == AML_EXT_REGION_OP) &&
(OpRegion->NameString == Name) &&
(OpRegion->DWordPrefix == AML_DWORD_PREFIX) &&
(OpRegion->BytePrefix == AML_BYTE_PREFIX)) {
@@ -268,7 +223,7 @@ AssignOpRegion (
}
/**
- Patch version string of Physical Presence interface supported by platform. The initial string tag in TPM
+ Patch version string of Physical Presence interface supported by platform. The initial string tag in TPM
ACPI table is "$PV".
@param[in, out] Table The TPM item in ACPI table.
@@ -302,6 +257,254 @@ UpdatePPVersion (
return EFI_NOT_FOUND;
}
+/**
+ Patch interrupt resources returned by TPM _PRS. ResourceTemplate to patch is determined by input
+ interrupt buffer size. BufferSize, PkgLength and interrupt descirptor in ByteList need to be patched
+
+ @param[in, out] Table The TPM item in ACPI table.
+ @param[in] IrqBuffer Input new IRQ buffer.
+ @param[in] IrqBuffserSize Input new IRQ buffer size.
+ @param[out] IsShortFormPkgLength If _PRS returns Short length Package(ACPI spec 20.2.4).
+
+ @return patch status.
+
+**/
+EFI_STATUS
+UpdatePossibleResource (
+ IN OUT EFI_ACPI_DESCRIPTION_HEADER *Table,
+ IN UINT32 *IrqBuffer,
+ IN UINT32 IrqBuffserSize,
+ OUT BOOLEAN *IsShortFormPkgLength
+ )
+{
+ UINT8 *DataPtr;
+ UINT8 *DataEndPtr;
+ UINT32 NewPkgLength;
+ UINT32 OrignalPkgLength;
+
+ NewPkgLength = 0;
+ OrignalPkgLength = 0;
+ DataEndPtr = NULL;
+
+ //
+ // Follow ACPI spec
+ // 6.4.3 Extend Interrupt Descriptor.
+ // 19.3.3 ASL Resource Template
+ // 20 AML specification
+ // to patch TPM ACPI object _PRS returned ResourceTemplate() containing 2 resource descriptors and an auto appended End Tag
+ //
+ // AML data is organized by following rule.
+ // Code need to patch BufferSize and PkgLength and interrupt descirptor in ByteList
+ //
+ // ============= Buffer ====================
+ // DefBuffer := BufferOp PkgLength BufferSize ByteList
+ // BufferOp := 0x11
+ //
+ // ==============PkgLength==================
+ // PkgLength := PkgLeadByte |
+ // |
+ // |
+ //
+ //
+ // PkgLeadByte :=
+ //
+ //
+ //
+ //==============BufferSize==================
+ // BufferSize := Integar
+ // Integar := ByteConst|WordConst|DwordConst....
+ //
+ // ByteConst := BytePrefix ByteData
+ //
+ //==============ByteList===================
+ // ByteList := ByteData ByteList
+ //
+ //=========================================
+
+ //
+ // 1. Check TPM_PRS_RESS with PkgLength <=63 can hold the input interrupt number buffer for patching
+ //
+ for (DataPtr = (UINT8 *)(Table + 1);
+ DataPtr < (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE));
+ DataPtr += 1) {
+ if (CompareMem(DataPtr, TPM_PRS_RESS, TPM_PRS_RES_NAME_SIZE) == 0) {
+ //
+ // Jump over object name & BufferOp
+ //
+ DataPtr += TPM_PRS_RES_NAME_SIZE + 1;
+
+ if ((*DataPtr & (BIT7|BIT6)) == 0) {
+ OrignalPkgLength = (UINT32)*DataPtr;
+ DataEndPtr = DataPtr + OrignalPkgLength;
+
+ //
+ // Jump over PkgLength = PkgLeadByte only
+ //
+ NewPkgLength++;
+
+ //
+ // Jump over BufferSize
+ //
+ if (*(DataPtr + 1) == AML_BYTE_PREFIX) {
+ NewPkgLength += 2;
+ } else if (*(DataPtr + 1) == AML_WORD_PREFIX) {
+ NewPkgLength += 3;
+ } else if (*(DataPtr + 1) == AML_DWORD_PREFIX) {
+ NewPkgLength += 5;
+ } else {
+ ASSERT(FALSE);
+ return EFI_UNSUPPORTED;
+ }
+ } else {
+ ASSERT(FALSE);
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // Include Memory32Fixed Descritor (12 Bytes) + Interrupt Descriptor header(5 Bytes) + End Tag(2 Bytes)
+ //
+ NewPkgLength += 19 + IrqBuffserSize;
+ if (NewPkgLength > 63) {
+ break;
+ }
+
+ if (NewPkgLength > OrignalPkgLength) {
+ ASSERT(FALSE);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // 1.1 Patch PkgLength
+ //
+ *DataPtr = (UINT8)NewPkgLength;
+
+ //
+ // 1.2 Patch BufferSize = sizeof(Memory32Fixed Descritor + Interrupt Descriptor + End Tag).
+ // It is Little endian. So only patch lowest byte of BufferSize due to current interrupt number limit.
+ //
+ *(DataPtr + 2) = (UINT8)(IrqBuffserSize + 19);
+
+ //
+ // Notify _PRS to report short formed ResourceTemplate
+ //
+ *IsShortFormPkgLength = TRUE;
+
+ break;
+ }
+ }
+
+ //
+ // 2. Use TPM_PRS_RESL with PkgLength > 63 to hold longer input interrupt number buffer for patching
+ //
+ if (NewPkgLength > 63) {
+ NewPkgLength = 0;
+ OrignalPkgLength = 0;
+ for (DataPtr = (UINT8 *)(Table + 1);
+ DataPtr < (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE));
+ DataPtr += 1) {
+ if (CompareMem(DataPtr, TPM_PRS_RESL, TPM_PRS_RES_NAME_SIZE) == 0) {
+ //
+ // Jump over object name & BufferOp
+ //
+ DataPtr += TPM_PRS_RES_NAME_SIZE + 1;
+
+ if ((*DataPtr & (BIT7|BIT6)) != 0) {
+ OrignalPkgLength = (UINT32)(*(DataPtr + 1) << 4) + (*DataPtr & 0x0F);
+ DataEndPtr = DataPtr + OrignalPkgLength;
+ //
+ // Jump over PkgLength = PkgLeadByte + ByteData length
+ //
+ NewPkgLength += 1 + ((*DataPtr & (BIT7|BIT6)) >> 6);
+
+ //
+ // Jump over BufferSize
+ //
+ if (*(DataPtr + NewPkgLength) == AML_BYTE_PREFIX) {
+ NewPkgLength += 2;
+ } else if (*(DataPtr + NewPkgLength) == AML_WORD_PREFIX) {
+ NewPkgLength += 3;
+ } else if (*(DataPtr + NewPkgLength) == AML_DWORD_PREFIX) {
+ NewPkgLength += 5;
+ } else {
+ ASSERT(FALSE);
+ return EFI_UNSUPPORTED;
+ }
+ } else {
+ ASSERT(FALSE);
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // Include Memory32Fixed Descritor (12 Bytes) + Interrupt Descriptor header(5 Bytes) + End Tag(2 Bytes)
+ //
+ NewPkgLength += 19 + IrqBuffserSize;
+
+ if (NewPkgLength > OrignalPkgLength) {
+ ASSERT(FALSE);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // 2.1 Patch PkgLength. Only patch PkgLeadByte and first ByteData
+ //
+ *DataPtr = (UINT8)((*DataPtr) & 0xF0) | (NewPkgLength & 0x0F);
+ *(DataPtr + 1) = (UINT8)((NewPkgLength & 0xFF0) >> 4);
+
+ //
+ // 2.2 Patch BufferSize = sizeof(Memory32Fixed Descritor + Interrupt Descriptor + End Tag).
+ // It is Little endian. Only patch lowest byte of BufferSize due to current interrupt number limit.
+ //
+ *(DataPtr + 2 + ((*DataPtr & (BIT7|BIT6)) >> 6)) = (UINT8)(IrqBuffserSize + 19);
+
+ //
+ // Notify _PRS to report long formed ResourceTemplate
+ //
+ *IsShortFormPkgLength = FALSE;
+ break;
+ }
+ }
+ }
+
+ if (DataPtr >= (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE))) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // 3. Move DataPtr to Interrupt descriptor header and patch interrupt descriptor.
+ // 5 bytes for interrupt descriptor header, 2 bytes for End Tag
+ //
+ DataPtr += NewPkgLength - (5 + IrqBuffserSize + 2);
+ //
+ // 3.1 Patch Length bit[7:0] of Interrupt descirptor patch interrupt descriptor
+ //
+ *(DataPtr + 1) = (UINT8)(2 + IrqBuffserSize);
+ //
+ // 3.2 Patch Interrupt Table Length
+ //
+ *(DataPtr + 4) = (UINT8)(IrqBuffserSize / sizeof(UINT32));
+ //
+ // 3.3 Copy patched InterruptNumBuffer
+ //
+ CopyMem(DataPtr + 5, IrqBuffer, IrqBuffserSize);
+
+ //
+ // 4. Jump over Interrupt descirptor and Patch END Tag, set Checksum field to 0
+ //
+ DataPtr += 5 + IrqBuffserSize;
+ *DataPtr = ACPI_END_TAG_DESCRIPTOR;
+ *(DataPtr + 1) = 0;
+
+ //
+ // 5. Jump over new ResourceTemplate. Stuff rest bytes to NOOP
+ //
+ DataPtr += 2;
+ if (DataPtr < DataEndPtr) {
+ SetMem(DataPtr, (UINTN)DataEndPtr - (UINTN)DataPtr, AML_NOOP_OP);
+ }
+
+ return EFI_SUCCESS;
+}
+
/**
Patch TPM2 device HID string. The initial string tag in TPM2 ACPI table is "NNN0000".
@@ -337,7 +540,7 @@ UpdateHID (
if (!EFI_ERROR(Status)) {
DEBUG((EFI_D_INFO, "TPM_PT_MANUFACTURER 0x%08x\n", ManufacturerID));
//
- // ManufacturerID defined in TCG Vendor ID Registry
+ // ManufacturerID defined in TCG Vendor ID Registry
// may tailed with 0x00 or 0x20
//
if ((ManufacturerID >> 24) == 0x00 || ((ManufacturerID >> 24) == 0x20)) {
@@ -368,11 +571,11 @@ UpdateHID (
// #### is Firmware Version 1
//
if (PnpHID) {
- AsciiSPrint(Hid + 3, TPM_HID_PNP_SIZE - 3, "%02d%02d", ((FirmwareVersion1 & 0xFFFF0000) >> 16), (FirmwareVersion1 && 0x0000FFFF));
+ AsciiSPrint(Hid + 3, TPM_HID_PNP_SIZE - 3, "%02d%02d", ((FirmwareVersion1 & 0xFFFF0000) >> 16), (FirmwareVersion1 & 0x0000FFFF));
} else {
- AsciiSPrint(Hid + 4, TPM_HID_ACPI_SIZE - 4, "%02d%02d", ((FirmwareVersion1 & 0xFFFF0000) >> 16), (FirmwareVersion1 && 0x0000FFFF));
+ AsciiSPrint(Hid + 4, TPM_HID_ACPI_SIZE - 4, "%02d%02d", ((FirmwareVersion1 & 0xFFFF0000) >> 16), (FirmwareVersion1 & 0x0000FFFF));
}
-
+
} else {
DEBUG ((EFI_D_ERROR, "Get TPM_PT_FIRMWARE_VERSION_X failed %x!\n", Status));
ASSERT(FALSE);
@@ -423,6 +626,11 @@ PublishAcpiTable (
UINTN TableKey;
EFI_ACPI_DESCRIPTION_HEADER *Table;
UINTN TableSize;
+ UINT32 *PossibleIrqNumBuf;
+ UINT32 PossibleIrqNumBufSize;
+ BOOLEAN IsShortFormPkgLength;
+
+ IsShortFormPkgLength = FALSE;
Status = GetSectionFromFv (
&gEfiCallerIdGuid,
@@ -453,6 +661,29 @@ PublishAcpiTable (
return Status;
}
+ if (PcdGet32(PcdTpm2CurrentIrqNum) != 0) {
+ //
+ // Patch _PRS interrupt resource only when TPM interrupt is supported
+ //
+ PossibleIrqNumBuf = (UINT32 *)PcdGetPtr(PcdTpm2PossibleIrqNumBuf);
+ PossibleIrqNumBufSize = (UINT32)PcdGetSize(PcdTpm2PossibleIrqNumBuf);
+
+ if (PossibleIrqNumBufSize <= MAX_PRS_INT_BUF_SIZE && (PossibleIrqNumBufSize % sizeof(UINT32)) == 0) {
+ Status = UpdatePossibleResource(Table, PossibleIrqNumBuf, PossibleIrqNumBufSize, &IsShortFormPkgLength);
+ DEBUG ((
+ DEBUG_INFO,
+ "UpdatePossibleResource status - %x. TPM2 service may not ready in OS.\n",
+ Status
+ ));
+ } else {
+ DEBUG ((
+ DEBUG_INFO,
+ "PcdTpm2PossibleIrqNumBuf size %x is not correct. TPM2 service may not ready in OS.\n",
+ PossibleIrqNumBufSize
+ ));
+ }
+ }
+
//
// Measure to PCR[0] with event EV_POST_CODE ACPI DATA
//
@@ -470,6 +701,8 @@ PublishAcpiTable (
CopyMem (Table->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Table->OemId) );
mTcgNvs = AssignOpRegion (Table, SIGNATURE_32 ('T', 'N', 'V', 'S'), (UINT16) sizeof (TCG_NVS));
ASSERT (mTcgNvs != NULL);
+ mTcgNvs->TpmIrqNum = PcdGet32(PcdTpm2CurrentIrqNum);
+ mTcgNvs->IsShortFormPkgLength = IsShortFormPkgLength;
//
// Publish the TPM ACPI table. Table is re-checksumed.
@@ -506,7 +739,20 @@ PublishTpm2 (
UINTN TableKey;
UINT64 OemTableId;
EFI_TPM2_ACPI_CONTROL_AREA *ControlArea;
- PTP_INTERFACE_TYPE InterfaceType;
+ TPM2_PTP_INTERFACE_TYPE InterfaceType;
+
+ mTpm2AcpiTemplate.Header.Revision = PcdGet8(PcdTpm2AcpiTableRev);
+ DEBUG((DEBUG_INFO, "Tpm2 ACPI table revision is %d\n", mTpm2AcpiTemplate.Header.Revision));
+
+ //
+ // PlatformClass is only valid for version 4 and above
+ // BIT0~15: PlatformClass
+ // BIT16~31: Reserved
+ //
+ if (mTpm2AcpiTemplate.Header.Revision >= EFI_TPM2_ACPI_TABLE_REVISION_4) {
+ mTpm2AcpiTemplate.Flags = (mTpm2AcpiTemplate.Flags & 0xFFFF0000) | PcdGet8(PcdTpmPlatformClass);
+ DEBUG((DEBUG_INFO, "Tpm2 ACPI table PlatformClass is %d\n", (mTpm2AcpiTemplate.Flags & 0x0000FFFF)));
+ }
//
// Measure to PCR[0] with event EV_POST_CODE ACPI DATA
@@ -520,9 +766,9 @@ PublishTpm2 (
sizeof(mTpm2AcpiTemplate)
);
- InterfaceType = GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
+ InterfaceType = PcdGet8(PcdActiveTpmInterfaceType);
switch (InterfaceType) {
- case PtpInterfaceCrb:
+ case Tpm2PtpInterfaceCrb:
mTpm2AcpiTemplate.StartMethod = EFI_TPM2_ACPI_TABLE_START_METHOD_COMMAND_RESPONSE_BUFFER_INTERFACE;
mTpm2AcpiTemplate.AddressOfControlArea = PcdGet64 (PcdTpmBaseAddress) + 0x40;
ControlArea = (EFI_TPM2_ACPI_CONTROL_AREA *)(UINTN)mTpm2AcpiTemplate.AddressOfControlArea;
@@ -531,8 +777,8 @@ PublishTpm2 (
ControlArea->Command = PcdGet64 (PcdTpmBaseAddress) + 0x80;
ControlArea->Response = PcdGet64 (PcdTpmBaseAddress) + 0x80;
break;
- case PtpInterfaceFifo:
- case PtpInterfaceTis:
+ case Tpm2PtpInterfaceFifo:
+ case Tpm2PtpInterfaceTis:
break;
default:
DEBUG((EFI_D_ERROR, "TPM2 InterfaceType get error! %d\n", InterfaceType));
@@ -566,12 +812,12 @@ PublishTpm2 (
/**
The driver's entry point.
- It install callbacks for TPM physical presence and MemoryClear, and locate
+ It install callbacks for TPM physical presence and MemoryClear, and locate
SMM variable to be used in the callback function.
- @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
-
+
@retval EFI_SUCCESS The entry point is executed successfully.
@retval Others Some error occurs when executing this entry point.
@@ -616,7 +862,7 @@ InitializeTcgSmm (
return Status;
}
mTcgNvs->MemoryClear.SoftwareSmi = (UINT8) SwContext.SwSmiInputValue;
-
+
//
// Locate SmmVariableProtocol.
//