* [PATCH 4/8] OvmfPkg/IntelTdx: Measure Td HobList and Configuration FV
2022-03-02 0:27 [PATCH 0/8] Enable RTMR based measurement and measure boot for Td guest Min Xu
` (2 preceding siblings ...)
2022-03-02 0:28 ` [PATCH 3/8] MdePkg: Add definition of EFI_CC_EVENT_HOB_GUID Min Xu
@ 2022-03-02 0:28 ` Min Xu
2022-03-02 0:28 ` [PATCH 5/8] MdePkg: Define CC Measure EventLog ACPI Table Min Xu
` (3 subsequent siblings)
7 siblings, 0 replies; 18+ messages in thread
From: Min Xu @ 2022-03-02 0:28 UTC (permalink / raw)
To: devel
Cc: Min Xu, Ard Biesheuvel, Jiewen Yao, Jordan Justen, Brijesh Singh,
Erdem Aktas, James Bottomley, Tom Lendacky, Gerd Hoffmann
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3853
TdHobList and Configuration FV are external data provided by Host VMM.
These are not trusted in Td guest. So they should be validated , measured
and extended to Td RTMR registers. In the meantime 2 EFI_CC_EVENT_HOB are
created. These 2 GUIDed HOBs carry the hash value of TdHobList and
Configuration FV. In DXE phase EFI_CC_EVENT can be created based on these
2 GUIDed HOBs.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
---
OvmfPkg/IntelTdx/IntelTdxX64.dsc | 3 +
OvmfPkg/IntelTdx/PeilessStartupLib/IntelTdx.c | 497 ++++++++++++++++++
.../PeilessStartupLib/PeilessStartup.c | 30 ++
.../PeilessStartupInternal.h | 57 ++
.../PeilessStartupLib/PeilessStartupLib.inf | 7 +-
5 files changed, 592 insertions(+), 2 deletions(-)
create mode 100644 OvmfPkg/IntelTdx/PeilessStartupLib/IntelTdx.c
diff --git a/OvmfPkg/IntelTdx/IntelTdxX64.dsc b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
index 13e0c6ed6181..8bf1e9f0ab1e 100644
--- a/OvmfPkg/IntelTdx/IntelTdxX64.dsc
+++ b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
@@ -517,6 +517,9 @@
OvmfPkg/IntelTdx/Sec/SecMain.inf {
<LibraryClasses>
NULL|MdeModulePkg/Library/LzmaCustomDecompressLib/LzmaCustomDecompressLib.inf
+ BaseCryptLib|CryptoPkg/Library/BaseCryptLib/SecCryptLib.inf
+ HashLib|SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterTdx.inf
+ NULL|SecurityPkg/Library/HashInstanceLibSha384/HashInstanceLibSha384.inf
}
#
diff --git a/OvmfPkg/IntelTdx/PeilessStartupLib/IntelTdx.c b/OvmfPkg/IntelTdx/PeilessStartupLib/IntelTdx.c
new file mode 100644
index 000000000000..a0bee70461b7
--- /dev/null
+++ b/OvmfPkg/IntelTdx/PeilessStartupLib/IntelTdx.c
@@ -0,0 +1,497 @@
+/** @file
+ Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <PiPei.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <IndustryStandard/UefiTcgPlatform.h>
+#include <IndustryStandard/Tpm20.h>
+#include <Library/HashLib.h>
+#include <Protocol/CcMeasurement.h>
+#include <Guid/VariableFormat.h>
+#include <Guid/SystemNvDataGuid.h>
+#include <Library/PrintLib.h>
+#include "PeilessStartupInternal.h"
+
+#pragma pack(1)
+
+typedef struct {
+ UINT32 count;
+ TPMI_ALG_HASH hashAlg;
+ BYTE sha384[SHA384_DIGEST_SIZE];
+} TDX_DIGEST_VALUE;
+
+#define HANDOFF_TABLE_DESC "TdxTable"
+typedef struct {
+ UINT8 TableDescriptionSize;
+ UINT8 TableDescription[sizeof (HANDOFF_TABLE_DESC)];
+ UINT64 NumberOfTables;
+ EFI_CONFIGURATION_TABLE TableEntry[1];
+} TDX_HANDOFF_TABLE_POINTERS2;
+
+#define FV_HANDOFF_TABLE_DESC "Fv(XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX)"
+typedef struct {
+ UINT8 BlobDescriptionSize;
+ UINT8 BlobDescription[sizeof (FV_HANDOFF_TABLE_DESC)];
+ EFI_PHYSICAL_ADDRESS BlobBase;
+ UINT64 BlobLength;
+} FV_HANDOFF_TABLE_POINTERS2;
+
+#pragma pack()
+
+#define INVALID_PCR2MR_INDEX 0xFF
+
+/**
+ RTMR[0] => PCR[1,7]
+ RTMR[1] => PCR[2,3,4,5]
+ RTMR[2] => PCR[8~15]
+ RTMR[3] => NA
+ Note:
+ PCR[0] is mapped to MRTD and should not appear here.
+ PCR[6] is reserved for OEM. It is not used.
+**/
+UINT8
+GetMappedRtmrIndex (
+ UINT32 PCRIndex
+ )
+{
+ UINT8 RtmrIndex;
+
+ if ((PCRIndex == 6) || (PCRIndex == 0) || (PCRIndex > 15)) {
+ DEBUG ((DEBUG_ERROR, "Invalid PCRIndex(%d) map to MR Index.\n", PCRIndex));
+ ASSERT (FALSE);
+ return INVALID_PCR2MR_INDEX;
+ }
+
+ RtmrIndex = 0;
+ if ((PCRIndex == 1) || (PCRIndex == 7)) {
+ RtmrIndex = 0;
+ } else if ((PCRIndex >= 2) && (PCRIndex < 6)) {
+ RtmrIndex = 1;
+ } else if ((PCRIndex >= 8) && (PCRIndex <= 15)) {
+ RtmrIndex = 2;
+ }
+
+ return RtmrIndex;
+}
+
+/**
+ Tpm measure and log data, and extend the measurement result into a specific PCR.
+ @param[in] PcrIndex PCR Index.
+ @param[in] EventType Event type.
+ @param[in] EventLog Measurement event log.
+ @param[in] LogLen Event log length in bytes.
+ @param[in] HashData The start of the data buffer to be hashed, extended.
+ @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_UNSUPPORTED TPM device not available.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+**/
+EFI_STATUS
+EFIAPI
+TdxMeasureAndLogData (
+ IN UINT32 PcrIndex,
+ IN UINT32 EventType,
+ IN VOID *EventLog,
+ IN UINT32 LogLen,
+ IN VOID *HashData,
+ IN UINT64 HashDataLen
+ )
+{
+ EFI_STATUS Status;
+ UINT32 RtmrIndex;
+ VOID *EventHobData;
+ TCG_PCR_EVENT2 *TcgPcrEvent2;
+ UINT8 *DigestBuffer;
+ TDX_DIGEST_VALUE *TdxDigest;
+ TPML_DIGEST_VALUES DigestList;
+ UINT8 *Ptr;
+
+ RtmrIndex = GetMappedRtmrIndex (PcrIndex);
+ if (RtmrIndex == INVALID_PCR2MR_INDEX) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ DEBUG ((DEBUG_INFO, "Creating TdTcg2PcrEvent PCR[%d]/RTMR[%d] EventType 0x%x\n", PcrIndex, RtmrIndex, EventType));
+
+ Status = HashAndExtend (
+ RtmrIndex,
+ (VOID *)HashData,
+ HashDataLen,
+ &DigestList
+ );
+
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_INFO, "Failed to HashAndExtend. %r\n", Status));
+ return Status;
+ }
+
+ //
+ // Use TDX_DIGEST_VALUE in the GUID HOB DataLength calculation
+ // to reserve enough buffer to hold TPML_DIGEST_VALUES compact binary
+ // which is limited to a SHA384 digest list
+ //
+ EventHobData = BuildGuidHob (
+ &gCcEventEntryHobGuid,
+ sizeof (TcgPcrEvent2->PCRIndex) + sizeof (TcgPcrEvent2->EventType) +
+ sizeof (TDX_DIGEST_VALUE) +
+ sizeof (TcgPcrEvent2->EventSize) + LogLen
+ );
+
+ if (EventHobData == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Ptr = (UINT8 *)EventHobData;
+ //
+ // Initialize PcrEvent data now
+ //
+ RtmrIndex++;
+ CopyMem (Ptr, &RtmrIndex, sizeof (UINT32));
+ Ptr += sizeof (UINT32);
+ CopyMem (Ptr, &EventType, sizeof (TCG_EVENTTYPE));
+ Ptr += sizeof (TCG_EVENTTYPE);
+
+ DigestBuffer = Ptr;
+
+ TdxDigest = (TDX_DIGEST_VALUE *)DigestBuffer;
+ TdxDigest->count = 1;
+ TdxDigest->hashAlg = TPM_ALG_SHA384;
+ CopyMem (
+ TdxDigest->sha384,
+ DigestList.digests[0].digest.sha384,
+ SHA384_DIGEST_SIZE
+ );
+
+ Ptr += sizeof (TDX_DIGEST_VALUE);
+
+ CopyMem (Ptr, &LogLen, sizeof (UINT32));
+ Ptr += sizeof (UINT32);
+ CopyMem (Ptr, EventLog, LogLen);
+ Ptr += LogLen;
+
+ Status = EFI_SUCCESS;
+ return Status;
+}
+
+/**
+ Measure the Hoblist passed from the VMM.
+
+ This function will create a unique GUID hob entry will be
+ found from the TCG driver building the event log.
+ This module will generate the measurement with the data in
+ this hob, and log the event.
+
+ @param[in] VmmHobList The Hoblist pass the firmware
+
+ @retval EFI_SUCCESS Fv image is measured successfully
+ or it has been already measured.
+ @retval Others Other errors as indicated
+**/
+EFI_STATUS
+EFIAPI
+MeasureHobList (
+ IN CONST VOID *VmmHobList
+ )
+{
+ EFI_PEI_HOB_POINTERS Hob;
+ TDX_HANDOFF_TABLE_POINTERS2 HandoffTables;
+ EFI_STATUS Status;
+
+ if (!TdIsEnabled ()) {
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+ }
+
+ Hob.Raw = (UINT8 *)VmmHobList;
+
+ //
+ // Parse the HOB list until end of list.
+ //
+ while (!END_OF_HOB_LIST (Hob)) {
+ Hob.Raw = GET_NEXT_HOB (Hob);
+ }
+
+ //
+ // Init the log event for HOB measurement
+ //
+
+ HandoffTables.TableDescriptionSize = sizeof (HandoffTables.TableDescription);
+ CopyMem (HandoffTables.TableDescription, HANDOFF_TABLE_DESC, sizeof (HandoffTables.TableDescription));
+ HandoffTables.NumberOfTables = 1;
+ CopyGuid (&(HandoffTables.TableEntry[0].VendorGuid), &gUefiOvmfPkgTokenSpaceGuid);
+ HandoffTables.TableEntry[0].VendorTable = (VOID *)VmmHobList;
+
+ Status = TdxMeasureAndLogData (
+ 1, // PCRIndex
+ EV_EFI_HANDOFF_TABLES2, // EventType
+ (VOID *)&HandoffTables, // EventData
+ sizeof (HandoffTables), // EventSize
+ (UINT8 *)(UINTN)VmmHobList, // HashData
+ (UINTN)((UINT8 *)Hob.Raw - (UINT8 *)VmmHobList) // HashDataLen
+ );
+
+ if (EFI_ERROR (Status)) {
+ ASSERT (FALSE);
+ }
+
+ return Status;
+}
+
+/**
+ Check padding data all bit should be 1.
+
+ @param[in] Buffer - A pointer to buffer header
+ @param[in] BufferSize - Buffer size
+
+ @retval TRUE - The padding data is valid.
+ @retval TRUE - The padding data is invalid.
+
+**/
+BOOLEAN
+CheckPaddingData (
+ IN UINT8 *Buffer,
+ IN UINT32 BufferSize
+ )
+{
+ UINT32 index;
+
+ for (index = 0; index < BufferSize; index++) {
+ if (Buffer[index] != 0xFF) {
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+/**
+ Check the integrity of CFV data.
+
+ @param[in] TdxCfvBase - A pointer to CFV header
+ @param[in] TdxCfvSize - CFV data size
+
+ @retval TRUE - The CFV data is valid.
+ @retval FALSE - The CFV data is invalid.
+
+**/
+BOOLEAN
+EFIAPI
+TdxValidateCfv (
+ IN UINT8 *TdxCfvBase,
+ IN UINT32 TdxCfvSize
+ )
+{
+ UINT16 Checksum;
+ UINTN VariableBase;
+ UINT32 VariableOffset;
+ UINT32 VariableOffsetBeforeAlign;
+ EFI_FIRMWARE_VOLUME_HEADER *CfvFvHeader;
+ VARIABLE_STORE_HEADER *CfvVariableStoreHeader;
+ AUTHENTICATED_VARIABLE_HEADER *VariableHeader;
+
+ static EFI_GUID FvHdrGUID = EFI_SYSTEM_NV_DATA_FV_GUID;
+ static EFI_GUID VarStoreHdrGUID = EFI_AUTHENTICATED_VARIABLE_GUID;
+
+ VariableOffset = 0;
+
+ if (TdxCfvBase == NULL) {
+ DEBUG ((DEBUG_ERROR, "TDX CFV: CFV pointer is NULL\n"));
+ return FALSE;
+ }
+
+ //
+ // Verify the header zerovetor, filesystemguid,
+ // revision, signature, attributes, fvlength, checksum
+ // HeaderLength cannot be an odd number
+ //
+ CfvFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)TdxCfvBase;
+
+ if ((!IsZeroBuffer (CfvFvHeader->ZeroVector, 16)) ||
+ (!CompareGuid (&FvHdrGUID, &CfvFvHeader->FileSystemGuid)) ||
+ (CfvFvHeader->Signature != EFI_FVH_SIGNATURE) ||
+ (CfvFvHeader->Attributes != 0x4feff) ||
+ (CfvFvHeader->Revision != EFI_FVH_REVISION) ||
+ (CfvFvHeader->FvLength != TdxCfvSize)
+ )
+ {
+ DEBUG ((DEBUG_ERROR, "TDX CFV: Basic FV headers were invalid\n"));
+ return FALSE;
+ }
+
+ //
+ // Verify the header checksum
+ //
+ Checksum = CalculateSum16 ((VOID *)CfvFvHeader, CfvFvHeader->HeaderLength);
+
+ if (Checksum != 0) {
+ DEBUG ((DEBUG_ERROR, "TDX CFV: FV checksum was invalid\n"));
+ return FALSE;
+ }
+
+ //
+ // Verify the header signature, size, format, state
+ //
+ CfvVariableStoreHeader = (VARIABLE_STORE_HEADER *)(TdxCfvBase + CfvFvHeader->HeaderLength);
+ if ((!CompareGuid (&VarStoreHdrGUID, &CfvVariableStoreHeader->Signature)) ||
+ (CfvVariableStoreHeader->Format != VARIABLE_STORE_FORMATTED) ||
+ (CfvVariableStoreHeader->State != VARIABLE_STORE_HEALTHY) ||
+ (CfvVariableStoreHeader->Size > (CfvFvHeader->FvLength - CfvFvHeader->HeaderLength)) ||
+ (CfvVariableStoreHeader->Size < sizeof (VARIABLE_STORE_HEADER))
+ )
+ {
+ DEBUG ((DEBUG_ERROR, "TDX CFV: Variable Store header was invalid\n"));
+ return FALSE;
+ }
+
+ //
+ // Verify the header startId, state
+ // Verify data to the end
+ //
+ VariableBase = (UINTN)TdxCfvBase + CfvFvHeader->HeaderLength + sizeof (VARIABLE_STORE_HEADER);
+ while (VariableOffset < (CfvVariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER))) {
+ VariableHeader = (AUTHENTICATED_VARIABLE_HEADER *)(VariableBase + VariableOffset);
+ if (VariableHeader->StartId != VARIABLE_DATA) {
+ if (!CheckPaddingData ((UINT8 *)VariableHeader, CfvVariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER) - VariableOffset)) {
+ DEBUG ((DEBUG_ERROR, "TDX CFV: Variable header was invalid\n"));
+ return FALSE;
+ }
+
+ VariableOffset = CfvVariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);
+ } else {
+ if (!((VariableHeader->State == VAR_IN_DELETED_TRANSITION) ||
+ (VariableHeader->State == VAR_DELETED) ||
+ (VariableHeader->State == VAR_HEADER_VALID_ONLY) ||
+ (VariableHeader->State == VAR_ADDED)))
+ {
+ DEBUG ((DEBUG_ERROR, "TDX CFV: Variable header was invalid\n"));
+ return FALSE;
+ }
+
+ VariableOffset += sizeof (AUTHENTICATED_VARIABLE_HEADER) + VariableHeader->NameSize + VariableHeader->DataSize;
+ // Verify VariableOffset should be less than or equal CfvVariableStoreHeader->Size - sizeof(VARIABLE_STORE_HEADER)
+ if (VariableOffset > (CfvVariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER))) {
+ DEBUG ((DEBUG_ERROR, "TDX CFV: Variable header was invalid\n"));
+ return FALSE;
+ }
+
+ VariableOffsetBeforeAlign = VariableOffset;
+ // 4 byte align
+ VariableOffset = (VariableOffset + 3) & (UINTN)(~3);
+
+ if (!CheckPaddingData ((UINT8 *)(VariableBase + VariableOffsetBeforeAlign), VariableOffset - VariableOffsetBeforeAlign)) {
+ DEBUG ((DEBUG_ERROR, "TDX CFV: Variable header was invalid\n"));
+ return FALSE;
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+/**
+ Get the FvName from the FV header.
+
+ Causion: The FV is untrusted input.
+
+ @param[in] FvBase Base address of FV image.
+ @param[in] FvLength Length of FV image.
+
+ @return FvName pointer
+ @retval NULL FvName is NOT found
+**/
+VOID *
+GetFvName (
+ IN EFI_PHYSICAL_ADDRESS FvBase,
+ IN UINT64 FvLength
+ )
+{
+ EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
+ EFI_FIRMWARE_VOLUME_EXT_HEADER *FvExtHeader;
+
+ if (FvBase >= MAX_ADDRESS) {
+ return NULL;
+ }
+
+ if (FvLength >= MAX_ADDRESS - FvBase) {
+ return NULL;
+ }
+
+ if (FvLength < sizeof (EFI_FIRMWARE_VOLUME_HEADER)) {
+ return NULL;
+ }
+
+ FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvBase;
+ if (FvHeader->ExtHeaderOffset < sizeof (EFI_FIRMWARE_VOLUME_HEADER)) {
+ return NULL;
+ }
+
+ if (FvHeader->ExtHeaderOffset + sizeof (EFI_FIRMWARE_VOLUME_EXT_HEADER) > FvLength) {
+ return NULL;
+ }
+
+ FvExtHeader = (EFI_FIRMWARE_VOLUME_EXT_HEADER *)(UINTN)(FvBase + FvHeader->ExtHeaderOffset);
+
+ return &FvExtHeader->FvName;
+}
+
+/**
+ Measure FV image.
+ Add it into the measured FV list after the FV is measured successfully.
+
+ @param[in] FvBase Base address of FV image.
+ @param[in] FvLength Length of FV image.
+ @param[in] PcrIndex Index of PCR
+
+ @retval EFI_SUCCESS Fv image is measured successfully
+ or it has been already measured.
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+
+**/
+EFI_STATUS
+EFIAPI
+TdxMeasureCfvImage (
+ IN EFI_PHYSICAL_ADDRESS FvBase,
+ IN UINT64 FvLength,
+ IN UINT8 PcrIndex
+ )
+{
+ EFI_STATUS Status;
+ FV_HANDOFF_TABLE_POINTERS2 FvBlob2;
+ VOID *FvName;
+
+ //
+ // Init the log event for FV measurement
+ //
+ FvBlob2.BlobDescriptionSize = sizeof (FvBlob2.BlobDescription);
+ CopyMem (FvBlob2.BlobDescription, FV_HANDOFF_TABLE_DESC, sizeof (FvBlob2.BlobDescription));
+ FvName = GetFvName (FvBase, FvLength);
+ if (FvName != NULL) {
+ AsciiSPrint ((CHAR8 *)FvBlob2.BlobDescription, sizeof (FvBlob2.BlobDescription), "Fv(%g)", FvName);
+ }
+
+ FvBlob2.BlobBase = FvBase;
+ FvBlob2.BlobLength = FvLength;
+
+ Status = TdxMeasureAndLogData (
+ 1, // PCRIndex
+ EV_EFI_PLATFORM_FIRMWARE_BLOB2, // EventType
+ (VOID *)&FvBlob2, // EventData
+ sizeof (FvBlob2), // EventSize
+ (UINT8 *)(UINTN)FvBase, // HashData
+ (UINTN)(FvLength) // HashDataLen
+ );
+
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "The FV which failed to be measured starts at: 0x%x\n", FvBase));
+ ASSERT (FALSE);
+ }
+
+ return Status;
+}
diff --git a/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartup.c b/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartup.c
index 5ba235e121cb..1cabc623908a 100644
--- a/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartup.c
+++ b/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartup.c
@@ -151,11 +151,13 @@ PeilessStartup (
UINT32 DxeCodeSize;
TD_RETURN_DATA TdReturnData;
VOID *VmmHobList;
+ UINT8 *CfvBase;
Status = EFI_SUCCESS;
BootFv = NULL;
VmmHobList = NULL;
SecCoreData = (EFI_SEC_PEI_HAND_OFF *)Context;
+ CfvBase = (UINT8 *)(UINTN)FixedPcdGet32 (PcdCfvBase);
ZeroMem (&PlatformInfoHob, sizeof (PlatformInfoHob));
@@ -185,6 +187,34 @@ PeilessStartup (
DEBUG ((DEBUG_INFO, "HobList: %p\n", GetHobList ()));
+ if (TdIsEnabled ()) {
+ //
+ // Measure HobList
+ //
+ Status = MeasureHobList (VmmHobList);
+ if (EFI_ERROR (Status)) {
+ ASSERT (FALSE);
+ CpuDeadLoop ();
+ }
+
+ //
+ // Validate Tdx CFV
+ //
+ if (!TdxValidateCfv (CfvBase, FixedPcdGet32 (PcdCfvRawDataSize))) {
+ ASSERT (FALSE);
+ CpuDeadLoop ();
+ }
+
+ //
+ // Measure Tdx CFV
+ //
+ Status = TdxMeasureCfvImage ((EFI_PHYSICAL_ADDRESS)(UINTN)CfvBase, FixedPcdGet32 (PcdCfvRawDataSize), 1);
+ if (EFI_ERROR (Status)) {
+ ASSERT (FALSE);
+ CpuDeadLoop ();
+ }
+ }
+
//
// Initialize the Platform
//
diff --git a/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartupInternal.h b/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartupInternal.h
index 23e9e0be53f1..2a100270ff20 100644
--- a/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartupInternal.h
+++ b/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartupInternal.h
@@ -52,4 +52,61 @@ EFIAPI
ConstructSecHobList (
);
+/**
+ Measure the Hoblist passed from the VMM.
+
+ This function will create a unique GUID hob entry will be
+ found from the TCG driver building the event log.
+ This module will generate the measurement with the data in
+ this hob, and log the event.
+
+ @param[in] VmmHobList The Hoblist pass the firmware
+
+ @retval EFI_SUCCESS Fv image is measured successfully
+ or it has been already measured.
+ @retval Others Other errors as indicated
+**/
+EFI_STATUS
+EFIAPI
+MeasureHobList (
+ IN CONST VOID *VmmHobList
+ );
+
+/**
+ Check the integrity of CFV data.
+
+ @param[in] TdxCfvBase - A pointer to CFV header
+ @param[in] TdxCfvSize - CFV data size
+
+ @retval TRUE - The CFV data is valid.
+ @retval FALSE - The CFV data is invalid.
+
+**/
+BOOLEAN
+EFIAPI
+TdxValidateCfv (
+ IN UINT8 *TdxCfvBase,
+ IN UINT32 TdxCfvSize
+ );
+
+/**
+ Measure FV image.
+ Add it into the measured FV list after the FV is measured successfully.
+
+ @param[in] FvBase Base address of FV image.
+ @param[in] FvLength Length of FV image.
+ @param[in] PcrIndex Index of PCR
+
+ @retval EFI_SUCCESS Fv image is measured successfully
+ or it has been already measured.
+ @retval Others Other errors as indicated
+**/
+EFI_STATUS
+EFIAPI
+TdxMeasureCfvImage (
+ IN EFI_PHYSICAL_ADDRESS FvBase,
+ IN UINT64 FvLength,
+ IN UINT8 PcrIndex
+ );
+
#endif
diff --git a/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartupLib.inf b/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartupLib.inf
index 8791984586a4..178b4c35d472 100644
--- a/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartupLib.inf
+++ b/OvmfPkg/IntelTdx/PeilessStartupLib/PeilessStartupLib.inf
@@ -29,8 +29,7 @@
PeilessStartup.c
Hob.c
DxeLoad.c
-
-[Sources.X64]
+ IntelTdx.c
X64/VirtualMemory.c
[Packages]
@@ -39,6 +38,8 @@
UefiCpuPkg/UefiCpuPkg.dec
OvmfPkg/OvmfPkg.dec
EmbeddedPkg/EmbeddedPkg.dec
+ CryptoPkg/CryptoPkg.dec
+ SecurityPkg/SecurityPkg.dec
[LibraryClasses]
BaseLib
@@ -56,6 +57,7 @@
PrePiLib
QemuFwCfgLib
PlatformInitLib
+ HashLib
[Guids]
gEfiHobMemoryAllocModuleGuid
@@ -63,6 +65,7 @@
gUefiOvmfPkgPlatformInfoGuid
gEfiMemoryTypeInformationGuid
gPcdDataBaseHobGuid
+ gCcEventEntryHobGuid
[Pcd]
gUefiOvmfPkgTokenSpaceGuid.PcdCfvBase
--
2.29.2.windows.2
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH 7/8] OvmfPkg/IntelTdx: Add TdTcg2Dxe
2022-03-02 0:27 [PATCH 0/8] Enable RTMR based measurement and measure boot for Td guest Min Xu
` (5 preceding siblings ...)
2022-03-02 0:28 ` [PATCH 6/8] OvmfPkg: Add PCDs for LAML/LASA field in CC EVENTLOG ACPI table Min Xu
@ 2022-03-02 0:28 ` Min Xu
2022-03-02 0:28 ` [PATCH 8/8] OvmfPkg/IntelTdx: Enable RTMR based measurement and measure boot Min Xu
7 siblings, 0 replies; 18+ messages in thread
From: Min Xu @ 2022-03-02 0:28 UTC (permalink / raw)
To: devel
Cc: Min Xu, Brijesh Singh, Erdem Aktas, James Bottomley, Jiewen Yao,
Tom Lendacky, Ken Lu, Sami Mujawar, Gerd Hoffmann
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3853
TdTcg2Dxe mimics the Security/Tcg/Tcg2Dxe. It does below tasks:
- Set up and install CC_EVENTLOG ACPI table
- Parse the GUIDed HOB (gCcEventEntryHobGuid) and create CC event log
- Measure handoff tables, Boot##### variables etc
- Measure Exit Boot Service failed
- Install CcMeasurement Protocol
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Ken Lu <ken.lu@intel.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
---
.../IntelTdx/TdTcg2Dxe/MeasureBootPeCoff.c | 407 +++
OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.c | 2487 +++++++++++++++++
OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.inf | 101 +
3 files changed, 2995 insertions(+)
create mode 100644 OvmfPkg/IntelTdx/TdTcg2Dxe/MeasureBootPeCoff.c
create mode 100644 OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.c
create mode 100644 OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.inf
diff --git a/OvmfPkg/IntelTdx/TdTcg2Dxe/MeasureBootPeCoff.c b/OvmfPkg/IntelTdx/TdTcg2Dxe/MeasureBootPeCoff.c
new file mode 100644
index 000000000000..4d542156badd
--- /dev/null
+++ b/OvmfPkg/IntelTdx/TdTcg2Dxe/MeasureBootPeCoff.c
@@ -0,0 +1,407 @@
+/** @file
+ This module implements measuring PeCoff image for Tcg2 Protocol.
+
+ Caution: This file requires additional review when modified.
+ This driver will have external input - PE/COFF image.
+ This external input must be validated carefully to avoid security issue like
+ buffer overflow, integer overflow.
+
+Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiDxe.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/PeCoffLib.h>
+#include <Library/HashLib.h>
+
+UINTN mTcg2DxeImageSize = 0;
+
+/**
+ Reads contents of a PE/COFF image in memory buffer.
+
+ Caution: This function may receive untrusted input.
+ PE/COFF image is external input, so this function will make sure the PE/COFF image content
+ read is within the image buffer.
+
+ @param FileHandle Pointer to the file handle to read the PE/COFF image.
+ @param FileOffset Offset into the PE/COFF image to begin the read operation.
+ @param ReadSize On input, the size in bytes of the requested read operation.
+ On output, the number of bytes actually read.
+ @param Buffer Output buffer that contains the data read from the PE/COFF image.
+
+ @retval EFI_SUCCESS The specified portion of the PE/COFF image was read and the size
+**/
+EFI_STATUS
+EFIAPI
+Tcg2DxeImageRead (
+ IN VOID *FileHandle,
+ IN UINTN FileOffset,
+ IN OUT UINTN *ReadSize,
+ OUT VOID *Buffer
+ )
+{
+ UINTN EndPosition;
+
+ if ((FileHandle == NULL) || (ReadSize == NULL) || (Buffer == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (MAX_ADDRESS - FileOffset < *ReadSize) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ EndPosition = FileOffset + *ReadSize;
+ if (EndPosition > mTcg2DxeImageSize) {
+ *ReadSize = (UINT32)(mTcg2DxeImageSize - FileOffset);
+ }
+
+ if (FileOffset >= mTcg2DxeImageSize) {
+ *ReadSize = 0;
+ }
+
+ CopyMem (Buffer, (UINT8 *)((UINTN)FileHandle + FileOffset), *ReadSize);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Measure PE image into TPM log based on the authenticode image hashing in
+ PE/COFF Specification 8.0 Appendix A.
+
+ Caution: This function may receive untrusted input.
+ PE/COFF image is external input, so this function will validate its data structure
+ within this image buffer before use.
+
+ Notes: PE/COFF image is checked by BasePeCoffLib PeCoffLoaderGetImageInfo().
+
+ @param[in] RtmrIndex Rtmr index
+ @param[in] ImageAddress Start address of image buffer.
+ @param[in] ImageSize Image size
+ @param[out] DigestList Digest list of this image.
+
+ @retval EFI_SUCCESS Successfully measure image.
+ @retval EFI_OUT_OF_RESOURCES No enough resource to measure image.
+ @retval other error value
+**/
+EFI_STATUS
+MeasurePeImageAndExtend (
+ IN UINT32 RtmrIndex,
+ IN EFI_PHYSICAL_ADDRESS ImageAddress,
+ IN UINTN ImageSize,
+ OUT TPML_DIGEST_VALUES *DigestList
+ )
+{
+ EFI_STATUS Status;
+ EFI_IMAGE_DOS_HEADER *DosHdr;
+ UINT32 PeCoffHeaderOffset;
+ EFI_IMAGE_SECTION_HEADER *Section;
+ UINT8 *HashBase;
+ UINTN HashSize;
+ UINTN SumOfBytesHashed;
+ EFI_IMAGE_SECTION_HEADER *SectionHeader;
+ UINTN Index;
+ UINTN Pos;
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
+ UINT32 NumberOfRvaAndSizes;
+ UINT32 CertSize;
+ HASH_HANDLE HashHandle;
+ PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
+
+ HashHandle = 0xFFFFFFFF; // Know bad value
+
+ Status = EFI_UNSUPPORTED;
+ SectionHeader = NULL;
+
+ //
+ // Check PE/COFF image
+ //
+ ZeroMem (&ImageContext, sizeof (ImageContext));
+ ImageContext.Handle = (VOID *)(UINTN)ImageAddress;
+ mTcg2DxeImageSize = ImageSize;
+ ImageContext.ImageRead = (PE_COFF_LOADER_READ_FILE)Tcg2DxeImageRead;
+
+ //
+ // Get information about the image being loaded
+ //
+ Status = PeCoffLoaderGetImageInfo (&ImageContext);
+ if (EFI_ERROR (Status)) {
+ //
+ // The information can't be got from the invalid PeImage
+ //
+ DEBUG ((DEBUG_INFO, "Tcg2Dxe: PeImage invalid. Cannot retrieve image information.\n"));
+ goto Finish;
+ }
+
+ DosHdr = (EFI_IMAGE_DOS_HEADER *)(UINTN)ImageAddress;
+ PeCoffHeaderOffset = 0;
+ if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
+ PeCoffHeaderOffset = DosHdr->e_lfanew;
+ }
+
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINT8 *)(UINTN)ImageAddress + PeCoffHeaderOffset);
+ if (Hdr.Pe32->Signature != EFI_IMAGE_NT_SIGNATURE) {
+ Status = EFI_UNSUPPORTED;
+ goto Finish;
+ }
+
+ //
+ // PE/COFF Image Measurement
+ //
+ // NOTE: The following codes/steps are based upon the authenticode image hashing in
+ // PE/COFF Specification 8.0 Appendix A.
+ //
+ //
+
+ // 1. Load the image header into memory.
+
+ // 2. Initialize a SHA hash context.
+
+ Status = HashStart (&HashHandle);
+ if (EFI_ERROR (Status)) {
+ goto Finish;
+ }
+
+ //
+ // Measuring PE/COFF Image Header;
+ // But CheckSum field and SECURITY data directory (certificate) are excluded
+ //
+
+ //
+ // 3. Calculate the distance from the base of the image header to the image checksum address.
+ // 4. Hash the image header from its base to beginning of the image checksum.
+ //
+ HashBase = (UINT8 *)(UINTN)ImageAddress;
+ if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ //
+ // Use PE32 offset
+ //
+ NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
+ HashSize = (UINTN)(&Hdr.Pe32->OptionalHeader.CheckSum) - (UINTN)HashBase;
+ } else {
+ //
+ // Use PE32+ offset
+ //
+ NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
+ HashSize = (UINTN)(&Hdr.Pe32Plus->OptionalHeader.CheckSum) - (UINTN)HashBase;
+ }
+
+ Status = HashUpdate (HashHandle, HashBase, HashSize);
+ if (EFI_ERROR (Status)) {
+ goto Finish;
+ }
+
+ //
+ // 5. Skip over the image checksum (it occupies a single ULONG).
+ //
+ if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_SECURITY) {
+ //
+ // 6. Since there is no Cert Directory in optional header, hash everything
+ // from the end of the checksum to the end of image header.
+ //
+ if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ //
+ // Use PE32 offset.
+ //
+ HashBase = (UINT8 *)&Hdr.Pe32->OptionalHeader.CheckSum + sizeof (UINT32);
+ HashSize = Hdr.Pe32->OptionalHeader.SizeOfHeaders - (UINTN)(HashBase - ImageAddress);
+ } else {
+ //
+ // Use PE32+ offset.
+ //
+ HashBase = (UINT8 *)&Hdr.Pe32Plus->OptionalHeader.CheckSum + sizeof (UINT32);
+ HashSize = Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders - (UINTN)(HashBase - ImageAddress);
+ }
+
+ if (HashSize != 0) {
+ Status = HashUpdate (HashHandle, HashBase, HashSize);
+ if (EFI_ERROR (Status)) {
+ goto Finish;
+ }
+ }
+ } else {
+ //
+ // 7. Hash everything from the end of the checksum to the start of the Cert Directory.
+ //
+ if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ //
+ // Use PE32 offset
+ //
+ HashBase = (UINT8 *)&Hdr.Pe32->OptionalHeader.CheckSum + sizeof (UINT32);
+ HashSize = (UINTN)(&Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY]) - (UINTN)HashBase;
+ } else {
+ //
+ // Use PE32+ offset
+ //
+ HashBase = (UINT8 *)&Hdr.Pe32Plus->OptionalHeader.CheckSum + sizeof (UINT32);
+ HashSize = (UINTN)(&Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY]) - (UINTN)HashBase;
+ }
+
+ if (HashSize != 0) {
+ Status = HashUpdate (HashHandle, HashBase, HashSize);
+ if (EFI_ERROR (Status)) {
+ goto Finish;
+ }
+ }
+
+ //
+ // 8. Skip over the Cert Directory. (It is sizeof(IMAGE_DATA_DIRECTORY) bytes.)
+ // 9. Hash everything from the end of the Cert Directory to the end of image header.
+ //
+ if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ //
+ // Use PE32 offset
+ //
+ HashBase = (UINT8 *)&Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY + 1];
+ HashSize = Hdr.Pe32->OptionalHeader.SizeOfHeaders - (UINTN)(HashBase - ImageAddress);
+ } else {
+ //
+ // Use PE32+ offset
+ //
+ HashBase = (UINT8 *)&Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY + 1];
+ HashSize = Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders - (UINTN)(HashBase - ImageAddress);
+ }
+
+ if (HashSize != 0) {
+ Status = HashUpdate (HashHandle, HashBase, HashSize);
+ if (EFI_ERROR (Status)) {
+ goto Finish;
+ }
+ }
+ }
+
+ //
+ // 10. Set the SUM_OF_BYTES_HASHED to the size of the header
+ //
+ if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ //
+ // Use PE32 offset
+ //
+ SumOfBytesHashed = Hdr.Pe32->OptionalHeader.SizeOfHeaders;
+ } else {
+ //
+ // Use PE32+ offset
+ //
+ SumOfBytesHashed = Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders;
+ }
+
+ //
+ // 11. Build a temporary table of pointers to all the IMAGE_SECTION_HEADER
+ // structures in the image. The 'NumberOfSections' field of the image
+ // header indicates how big the table should be. Do not include any
+ // IMAGE_SECTION_HEADERs in the table whose 'SizeOfRawData' field is zero.
+ //
+ SectionHeader = (EFI_IMAGE_SECTION_HEADER *)AllocateZeroPool (sizeof (EFI_IMAGE_SECTION_HEADER) * Hdr.Pe32->FileHeader.NumberOfSections);
+ if (SectionHeader == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Finish;
+ }
+
+ //
+ // 12. Using the 'PointerToRawData' in the referenced section headers as
+ // a key, arrange the elements in the table in ascending order. In other
+ // words, sort the section headers according to the disk-file offset of
+ // the section.
+ //
+ Section = (EFI_IMAGE_SECTION_HEADER *)(
+ (UINT8 *)(UINTN)ImageAddress +
+ PeCoffHeaderOffset +
+ sizeof (UINT32) +
+ sizeof (EFI_IMAGE_FILE_HEADER) +
+ Hdr.Pe32->FileHeader.SizeOfOptionalHeader
+ );
+ for (Index = 0; Index < Hdr.Pe32->FileHeader.NumberOfSections; Index++) {
+ Pos = Index;
+ while ((Pos > 0) && (Section->PointerToRawData < SectionHeader[Pos - 1].PointerToRawData)) {
+ CopyMem (&SectionHeader[Pos], &SectionHeader[Pos - 1], sizeof (EFI_IMAGE_SECTION_HEADER));
+ Pos--;
+ }
+
+ CopyMem (&SectionHeader[Pos], Section, sizeof (EFI_IMAGE_SECTION_HEADER));
+ Section += 1;
+ }
+
+ //
+ // 13. Walk through the sorted table, bring the corresponding section
+ // into memory, and hash the entire section (using the 'SizeOfRawData'
+ // field in the section header to determine the amount of data to hash).
+ // 14. Add the section's 'SizeOfRawData' to SUM_OF_BYTES_HASHED .
+ // 15. Repeat steps 13 and 14 for all the sections in the sorted table.
+ //
+ for (Index = 0; Index < Hdr.Pe32->FileHeader.NumberOfSections; Index++) {
+ Section = (EFI_IMAGE_SECTION_HEADER *)&SectionHeader[Index];
+ if (Section->SizeOfRawData == 0) {
+ continue;
+ }
+
+ HashBase = (UINT8 *)(UINTN)ImageAddress + Section->PointerToRawData;
+ HashSize = (UINTN)Section->SizeOfRawData;
+
+ Status = HashUpdate (HashHandle, HashBase, HashSize);
+ if (EFI_ERROR (Status)) {
+ goto Finish;
+ }
+
+ SumOfBytesHashed += HashSize;
+ }
+
+ //
+ // 16. If the file size is greater than SUM_OF_BYTES_HASHED, there is extra
+ // data in the file that needs to be added to the hash. This data begins
+ // at file offset SUM_OF_BYTES_HASHED and its length is:
+ // FileSize - (CertDirectory->Size)
+ //
+ if (ImageSize > SumOfBytesHashed) {
+ HashBase = (UINT8 *)(UINTN)ImageAddress + SumOfBytesHashed;
+
+ if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_SECURITY) {
+ CertSize = 0;
+ } else {
+ if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ //
+ // Use PE32 offset.
+ //
+ CertSize = Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].Size;
+ } else {
+ //
+ // Use PE32+ offset.
+ //
+ CertSize = Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].Size;
+ }
+ }
+
+ if (ImageSize > CertSize + SumOfBytesHashed) {
+ HashSize = (UINTN)(ImageSize - CertSize - SumOfBytesHashed);
+
+ Status = HashUpdate (HashHandle, HashBase, HashSize);
+ if (EFI_ERROR (Status)) {
+ goto Finish;
+ }
+ } else if (ImageSize < CertSize + SumOfBytesHashed) {
+ Status = EFI_UNSUPPORTED;
+ goto Finish;
+ }
+ }
+
+ //
+ // 17. Finalize the SHA hash.
+ //
+ Status = HashCompleteAndExtend (HashHandle, RtmrIndex, NULL, 0, DigestList);
+ if (EFI_ERROR (Status)) {
+ goto Finish;
+ }
+
+Finish:
+ if (SectionHeader != NULL) {
+ FreePool (SectionHeader);
+ }
+
+ return Status;
+}
diff --git a/OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.c b/OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.c
new file mode 100644
index 000000000000..8361f976817f
--- /dev/null
+++ b/OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.c
@@ -0,0 +1,2487 @@
+/** @file
+ This module implements EFI TD Protocol.
+
+ Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiDxe.h>
+#include <IndustryStandard/Acpi.h>
+#include <IndustryStandard/PeImage.h>
+#include <IndustryStandard/TcpaAcpi.h>
+
+#include <Guid/GlobalVariable.h>
+#include <Guid/HobList.h>
+#include <Guid/EventGroup.h>
+#include <Guid/EventExitBootServiceFailed.h>
+#include <Guid/ImageAuthentication.h>
+#include <Guid/TpmInstance.h>
+
+#include <Protocol/DevicePath.h>
+#include <Protocol/MpService.h>
+#include <Protocol/VariableWrite.h>
+#include <Protocol/Tcg2Protocol.h>
+#include <Protocol/TrEEProtocol.h>
+#include <Protocol/ResetNotification.h>
+#include <Protocol/AcpiTable.h>
+
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/HobLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/BaseLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PrintLib.h>
+#include <Library/PcdLib.h>
+#include <Library/UefiLib.h>
+#include <Library/HashLib.h>
+#include <Library/PerformanceLib.h>
+#include <Library/ReportStatusCodeLib.h>
+#include <Library/TpmMeasurementLib.h>
+
+#include <Protocol/CcMeasurement.h>
+#include <Library/TdxLib.h>
+
+#define PERF_ID_CC_TCG2_DXE 0x3130
+
+#define CC_EVENT_LOG_AREA_COUNT_MAX 1
+#define INVALID_RTMR_INDEX 4
+
+typedef struct {
+ CHAR16 *VariableName;
+ EFI_GUID *VendorGuid;
+} VARIABLE_TYPE;
+
+typedef struct {
+ EFI_GUID *EventGuid;
+ EFI_CC_EVENT_LOG_FORMAT LogFormat;
+} CC_EVENT_INFO_STRUCT;
+
+typedef struct {
+ EFI_CC_EVENT_LOG_FORMAT EventLogFormat;
+ EFI_PHYSICAL_ADDRESS Lasa;
+ UINT64 Laml;
+ UINTN EventLogSize;
+ UINT8 *LastEvent;
+ BOOLEAN EventLogStarted;
+ BOOLEAN EventLogTruncated;
+ UINTN Next800155EventOffset;
+} CC_EVENT_LOG_AREA_STRUCT;
+
+typedef struct _TDX_DXE_DATA {
+ EFI_CC_BOOT_SERVICE_CAPABILITY BsCap;
+ CC_EVENT_LOG_AREA_STRUCT EventLogAreaStruct[CC_EVENT_LOG_AREA_COUNT_MAX];
+ BOOLEAN GetEventLogCalled[CC_EVENT_LOG_AREA_COUNT_MAX];
+ CC_EVENT_LOG_AREA_STRUCT FinalEventLogAreaStruct[CC_EVENT_LOG_AREA_COUNT_MAX];
+ EFI_CC_FINAL_EVENTS_TABLE *FinalEventsTable[CC_EVENT_LOG_AREA_COUNT_MAX];
+} TDX_DXE_DATA;
+
+typedef struct {
+ TPMI_ALG_HASH HashAlgo;
+ UINT16 HashSize;
+ UINT32 HashMask;
+} TDX_HASH_INFO;
+
+//
+//
+CC_EVENT_INFO_STRUCT mCcEventInfo[] = {
+ { &gCcEventEntryHobGuid, EFI_CC_EVENT_LOG_FORMAT_TCG_2 },
+};
+
+TDX_DXE_DATA mTdxDxeData = {
+ {
+ sizeof (EFI_CC_BOOT_SERVICE_CAPABILITY), // Size
+ { 1, 1 }, // StructureVersion
+ { 1, 1 }, // ProtocolVersion
+ EFI_CC_BOOT_HASH_ALG_SHA384, // HashAlgorithmBitmap
+ EFI_CC_EVENT_LOG_FORMAT_TCG_2, // SupportedEventLogs
+ { 2, 0 } // {CC_TYPE, CC_SUBTYPE}
+ },
+};
+
+UINTN mBootAttempts = 0;
+CHAR16 mBootVarName[] = L"BootOrder";
+
+VARIABLE_TYPE mVariableType[] = {
+ { EFI_SECURE_BOOT_MODE_NAME, &gEfiGlobalVariableGuid },
+ { EFI_PLATFORM_KEY_NAME, &gEfiGlobalVariableGuid },
+ { EFI_KEY_EXCHANGE_KEY_NAME, &gEfiGlobalVariableGuid },
+ { EFI_IMAGE_SECURITY_DATABASE, &gEfiImageSecurityDatabaseGuid },
+ { EFI_IMAGE_SECURITY_DATABASE1, &gEfiImageSecurityDatabaseGuid },
+};
+
+EFI_CC_EVENTLOG_ACPI_TABLE mTdxEventlogAcpiTemplate = {
+ {
+ EFI_CC_EVENTLOG_ACPI_TABLE_TD_SIGNATURE,
+ sizeof (mTdxEventlogAcpiTemplate),
+ EFI_CC_EVENTLOG_ACPI_TABLE_TD_REVISION,
+ //
+ // Compiler initializes the remaining bytes to 0
+ // These fields should be filled in production
+ //
+ },
+ 0, // rsvd
+ 0, // laml
+ 0, // lasa
+};
+
+//
+// Supported Hash list in Td guest.
+// Currently SHA384 is supported.
+//
+TDX_HASH_INFO mHashInfo[] = {
+ { TPM_ALG_SHA384, SHA384_DIGEST_SIZE, HASH_ALG_SHA384 }
+};
+
+/**
+ Get hash size based on Algo
+
+ @param[in] HashAlgo Hash Algorithm Id.
+
+ @return Size of the hash.
+**/
+UINT16
+GetHashSizeFromAlgo (
+ IN TPMI_ALG_HASH HashAlgo
+ )
+{
+ UINTN Index;
+
+ for (Index = 0; Index < sizeof (mHashInfo)/sizeof (mHashInfo[0]); Index++) {
+ if (mHashInfo[Index].HashAlgo == HashAlgo) {
+ return mHashInfo[Index].HashSize;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ Get hash mask based on Algo
+
+ @param[in] HashAlgo Hash Algorithm Id.
+
+ @return Hash mask.
+**/
+UINT32
+GetHashMaskFromAlgo (
+ IN TPMI_ALG_HASH HashAlgo
+ )
+{
+ UINTN Index;
+
+ for (Index = 0; Index < ARRAY_SIZE (mHashInfo); Index++) {
+ if (mHashInfo[Index].HashAlgo == HashAlgo) {
+ return mHashInfo[Index].HashMask;
+ }
+ }
+
+ ASSERT (FALSE);
+ return 0;
+}
+
+/**
+ Copy TPML_DIGEST_VALUES into a buffer
+
+ @param[in,out] Buffer Buffer to hold copied TPML_DIGEST_VALUES compact binary.
+ @param[in] DigestList TPML_DIGEST_VALUES to be copied.
+ @param[in] HashAlgorithmMask HASH bits corresponding to the desired digests to copy.
+
+ @return The end of buffer to hold TPML_DIGEST_VALUES.
+**/
+VOID *
+CopyDigestListToBuffer (
+ IN OUT VOID *Buffer,
+ IN TPML_DIGEST_VALUES *DigestList,
+ IN UINT32 HashAlgorithmMask
+ )
+{
+ UINTN Index;
+ UINT16 DigestSize;
+ UINT32 DigestListCount;
+ UINT32 *DigestListCountPtr;
+
+ DigestListCountPtr = (UINT32 *)Buffer;
+ DigestListCount = 0;
+ Buffer = (UINT8 *)Buffer + sizeof (DigestList->count);
+ for (Index = 0; Index < DigestList->count; Index++) {
+ if ((DigestList->digests[Index].hashAlg & HashAlgorithmMask) == 0) {
+ DEBUG ((DEBUG_ERROR, "WARNING: TD Event log has HashAlg unsupported (0x%x)\n", DigestList->digests[Index].hashAlg));
+ continue;
+ }
+
+ CopyMem (Buffer, &DigestList->digests[Index].hashAlg, sizeof (DigestList->digests[Index].hashAlg));
+ Buffer = (UINT8 *)Buffer + sizeof (DigestList->digests[Index].hashAlg);
+ DigestSize = GetHashSizeFromAlgo (DigestList->digests[Index].hashAlg);
+ CopyMem (Buffer, &DigestList->digests[Index].digest, DigestSize);
+ Buffer = (UINT8 *)Buffer + DigestSize;
+ DigestListCount++;
+ }
+
+ WriteUnaligned32 (DigestListCountPtr, DigestListCount);
+
+ return Buffer;
+}
+
+EFI_HANDLE mImageHandle;
+
+/**
+ Measure PE image into TPM log based on the authenticode image hashing in
+ PE/COFF Specification 8.0 Appendix A.
+
+ Caution: This function may receive untrusted input.
+ PE/COFF image is external input, so this function will validate its data structure
+ within this image buffer before use.
+
+ Notes: PE/COFF image is checked by BasePeCoffLib PeCoffLoaderGetImageInfo().
+
+ @param[in] MrIndex RTMR index
+ @param[in] ImageAddress Start address of image buffer.
+ @param[in] ImageSize Image size
+ @param[out] DigestList Digest list of this image.
+
+ @retval EFI_SUCCESS Successfully measure image.
+ @retval EFI_OUT_OF_RESOURCES No enough resource to measure image.
+ @retval other error value
+**/
+EFI_STATUS
+MeasurePeImageAndExtend (
+ IN UINT32 MrIndex,
+ IN EFI_PHYSICAL_ADDRESS ImageAddress,
+ IN UINTN ImageSize,
+ OUT TPML_DIGEST_VALUES *DigestList
+ );
+
+#define COLUME_SIZE (16 * 2)
+
+/**
+
+ This function dump raw data.
+
+ @param Data raw data
+ @param Size raw data size
+
+**/
+VOID
+InternalDumpData (
+ IN UINT8 *Data,
+ IN UINTN Size
+ )
+{
+ UINTN Index;
+
+ for (Index = 0; Index < Size; Index++) {
+ DEBUG ((DEBUG_INFO, Index == COLUME_SIZE/2 ? " | %02x" : " %02x", (UINTN)Data[Index]));
+ }
+}
+
+/**
+
+ This function dump raw data with colume format.
+
+ @param Data raw data
+ @param Size raw data size
+
+**/
+VOID
+InternalDumpHex (
+ IN UINT8 *Data,
+ IN UINTN Size
+ )
+{
+ UINTN Index;
+ UINTN Count;
+ UINTN Left;
+
+ Count = Size / COLUME_SIZE;
+ Left = Size % COLUME_SIZE;
+ for (Index = 0; Index < Count; Index++) {
+ DEBUG ((DEBUG_INFO, "%04x: ", Index * COLUME_SIZE));
+ InternalDumpData (Data + Index * COLUME_SIZE, COLUME_SIZE);
+ DEBUG ((DEBUG_INFO, "\n"));
+ }
+
+ if (Left != 0) {
+ DEBUG ((DEBUG_INFO, "%04x: ", Index * COLUME_SIZE));
+ InternalDumpData (Data + Index * COLUME_SIZE, Left);
+ DEBUG ((DEBUG_INFO, "\n"));
+ }
+}
+
+/**
+
+ This function initialize TD_EVENT_HDR for EV_NO_ACTION
+ Event Type other than EFI Specification ID event. The behavior is defined
+ by TCG PC Client PFP Spec. Section 9.3.4 EV_NO_ACTION Event Types
+
+ @param[in, out] NoActionEvent Event Header of EV_NO_ACTION Event
+ @param[in] EventSize Event Size of the EV_NO_ACTION Event
+
+**/
+VOID
+InitNoActionEvent (
+ IN OUT CC_EVENT_HDR *NoActionEvent,
+ IN UINT32 EventSize
+ )
+{
+ UINT32 DigestListCount;
+ TPMI_ALG_HASH HashAlgId;
+ UINT8 *DigestBuffer;
+
+ DigestBuffer = (UINT8 *)NoActionEvent->Digests.digests;
+ DigestListCount = 0;
+
+ NoActionEvent->MrIndex = 0;
+ NoActionEvent->EventType = EV_NO_ACTION;
+
+ //
+ // Set Hash count & hashAlg accordingly, while Digest.digests[n].digest to all 0
+ //
+ ZeroMem (&NoActionEvent->Digests, sizeof (NoActionEvent->Digests));
+
+ if ((mTdxDxeData.BsCap.HashAlgorithmBitmap & EFI_CC_BOOT_HASH_ALG_SHA384) != 0) {
+ HashAlgId = TPM_ALG_SHA384;
+ CopyMem (DigestBuffer, &HashAlgId, sizeof (TPMI_ALG_HASH));
+ DigestBuffer += sizeof (TPMI_ALG_HASH) + GetHashSizeFromAlgo (HashAlgId);
+ DigestListCount++;
+ }
+
+ //
+ // Set Digests Count
+ //
+ WriteUnaligned32 ((UINT32 *)&NoActionEvent->Digests.count, DigestListCount);
+
+ //
+ // Set Event Size
+ //
+ WriteUnaligned32 ((UINT32 *)DigestBuffer, EventSize);
+}
+
+/**
+ Get All processors EFI_CPU_LOCATION in system. LocationBuf is allocated inside the function
+ Caller is responsible to free LocationBuf.
+
+ @param[out] LocationBuf Returns Processor Location Buffer.
+ @param[out] Num Returns processor number.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_UNSUPPORTED MpService protocol not found.
+
+**/
+EFI_STATUS
+GetProcessorsCpuLocation (
+ OUT EFI_CPU_PHYSICAL_LOCATION **LocationBuf,
+ OUT UINTN *Num
+ )
+{
+ EFI_STATUS Status;
+ EFI_MP_SERVICES_PROTOCOL *MpProtocol;
+ UINTN ProcessorNum;
+ UINTN EnabledProcessorNum;
+ EFI_PROCESSOR_INFORMATION ProcessorInfo;
+ EFI_CPU_PHYSICAL_LOCATION *ProcessorLocBuf;
+ UINTN Index;
+
+ Status = gBS->LocateProtocol (&gEfiMpServiceProtocolGuid, NULL, (VOID **)&MpProtocol);
+ if (EFI_ERROR (Status)) {
+ //
+ // MP protocol is not installed
+ //
+ return EFI_UNSUPPORTED;
+ }
+
+ Status = MpProtocol->GetNumberOfProcessors (
+ MpProtocol,
+ &ProcessorNum,
+ &EnabledProcessorNum
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = gBS->AllocatePool (
+ EfiBootServicesData,
+ sizeof (EFI_CPU_PHYSICAL_LOCATION) * ProcessorNum,
+ (VOID **)&ProcessorLocBuf
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Get each processor Location info
+ //
+ for (Index = 0; Index < ProcessorNum; Index++) {
+ Status = MpProtocol->GetProcessorInfo (
+ MpProtocol,
+ Index,
+ &ProcessorInfo
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (ProcessorLocBuf);
+ return Status;
+ }
+
+ //
+ // Get all Processor Location info & measure
+ //
+ CopyMem (
+ &ProcessorLocBuf[Index],
+ &ProcessorInfo.Location,
+ sizeof (EFI_CPU_PHYSICAL_LOCATION)
+ );
+ }
+
+ *LocationBuf = ProcessorLocBuf;
+ *Num = ProcessorNum;
+
+ return Status;
+}
+
+/**
+ The EFI_CC_MEASUREMENT_PROTOCOL GetCapability function call provides protocol
+ capability information and state information.
+
+ @param[in] This Indicates the calling context
+ @param[in, out] ProtocolCapability The caller allocates memory for a EFI_CC_BOOT_SERVICE_CAPABILITY
+ structure and sets the size field to the size of the structure allocated.
+ The callee fills in the fields with the EFI protocol capability information
+ and the current EFI TCG2 state information up to the number of fields which
+ fit within the size of the structure passed in.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+ The ProtocolCapability variable will not be populated.
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
+ The ProtocolCapability variable will not be populated.
+ @retval EFI_BUFFER_TOO_SMALL The ProtocolCapability variable is too small to hold the full response.
+ It will be partially populated (required Size field will be set).
+**/
+EFI_STATUS
+EFIAPI
+TdGetCapability (
+ IN EFI_CC_MEASUREMENT_PROTOCOL *This,
+ IN OUT EFI_CC_BOOT_SERVICE_CAPABILITY *ProtocolCapability
+ )
+{
+ DEBUG ((DEBUG_VERBOSE, "TdGetCapability\n"));
+
+ if ((This == NULL) || (ProtocolCapability == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ CopyMem (ProtocolCapability, &mTdxDxeData.BsCap, sizeof (EFI_CC_BOOT_SERVICE_CAPABILITY));
+
+ return EFI_SUCCESS;
+}
+
+/**
+ This function dump PCR event.
+ TD Event log reuse the TCG PCR Event spec.
+ The first event in the event log is the SHA1 log format.
+ There is only ONE TCG_PCR_EVENT in TD Event log.
+
+ @param[in] EventHdr TCG PCR event structure.
+**/
+VOID
+DumpPcrEvent (
+ IN TCG_PCR_EVENT_HDR *EventHdr
+ )
+{
+ UINTN Index;
+
+ DEBUG ((DEBUG_INFO, " Event:\n"));
+ DEBUG ((DEBUG_INFO, " MrIndex - %d\n", EventHdr->PCRIndex));
+ DEBUG ((DEBUG_INFO, " EventType - 0x%08x\n", EventHdr->EventType));
+ DEBUG ((DEBUG_INFO, " Digest - "));
+ for (Index = 0; Index < sizeof (TCG_DIGEST); Index++) {
+ DEBUG ((DEBUG_INFO, "%02x ", EventHdr->Digest.digest[Index]));
+ }
+
+ DEBUG ((DEBUG_INFO, "\n"));
+ DEBUG ((DEBUG_INFO, " EventSize - 0x%08x\n", EventHdr->EventSize));
+ InternalDumpHex ((UINT8 *)(EventHdr + 1), EventHdr->EventSize);
+}
+
+/**
+ This function dump TCG_EfiSpecIDEventStruct.
+
+ @param[in] TcgEfiSpecIdEventStruct A pointer to TCG_EfiSpecIDEventStruct.
+**/
+VOID
+DumpTcgEfiSpecIdEventStruct (
+ IN TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct
+ )
+{
+ TCG_EfiSpecIdEventAlgorithmSize *DigestSize;
+ UINTN Index;
+ UINT8 *VendorInfoSize;
+ UINT8 *VendorInfo;
+ UINT32 NumberOfAlgorithms;
+
+ DEBUG ((DEBUG_INFO, " TCG_EfiSpecIDEventStruct:\n"));
+ DEBUG ((DEBUG_INFO, " signature - '"));
+ for (Index = 0; Index < sizeof (TcgEfiSpecIdEventStruct->signature); Index++) {
+ DEBUG ((DEBUG_INFO, "%c", TcgEfiSpecIdEventStruct->signature[Index]));
+ }
+
+ DEBUG ((DEBUG_INFO, "'\n"));
+ DEBUG ((DEBUG_INFO, " platformClass - 0x%08x\n", TcgEfiSpecIdEventStruct->platformClass));
+ DEBUG ((DEBUG_INFO, " specVersion - %d.%d%d\n", TcgEfiSpecIdEventStruct->specVersionMajor, TcgEfiSpecIdEventStruct->specVersionMinor, TcgEfiSpecIdEventStruct->specErrata));
+ DEBUG ((DEBUG_INFO, " uintnSize - 0x%02x\n", TcgEfiSpecIdEventStruct->uintnSize));
+
+ CopyMem (&NumberOfAlgorithms, TcgEfiSpecIdEventStruct + 1, sizeof (NumberOfAlgorithms));
+ DEBUG ((DEBUG_INFO, " NumberOfAlgorithms - 0x%08x\n", NumberOfAlgorithms));
+
+ DigestSize = (TCG_EfiSpecIdEventAlgorithmSize *)((UINT8 *)TcgEfiSpecIdEventStruct + sizeof (*TcgEfiSpecIdEventStruct) + sizeof (NumberOfAlgorithms));
+ for (Index = 0; Index < NumberOfAlgorithms; Index++) {
+ DEBUG ((DEBUG_INFO, " digest(%d)\n", Index));
+ DEBUG ((DEBUG_INFO, " algorithmId - 0x%04x\n", DigestSize[Index].algorithmId));
+ DEBUG ((DEBUG_INFO, " digestSize - 0x%04x\n", DigestSize[Index].digestSize));
+ }
+
+ VendorInfoSize = (UINT8 *)&DigestSize[NumberOfAlgorithms];
+ DEBUG ((DEBUG_INFO, " VendorInfoSize - 0x%02x\n", *VendorInfoSize));
+ VendorInfo = VendorInfoSize + 1;
+ DEBUG ((DEBUG_INFO, " VendorInfo - "));
+ for (Index = 0; Index < *VendorInfoSize; Index++) {
+ DEBUG ((DEBUG_INFO, "%02x ", VendorInfo[Index]));
+ }
+
+ DEBUG ((DEBUG_INFO, "\n"));
+}
+
+/**
+ This function get size of TCG_EfiSpecIDEventStruct.
+
+ @param[in] TcgEfiSpecIdEventStruct A pointer to TCG_EfiSpecIDEventStruct.
+**/
+UINTN
+GetTcgEfiSpecIdEventStructSize (
+ IN TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct
+ )
+{
+ TCG_EfiSpecIdEventAlgorithmSize *DigestSize;
+ UINT8 *VendorInfoSize;
+ UINT32 NumberOfAlgorithms;
+
+ CopyMem (&NumberOfAlgorithms, TcgEfiSpecIdEventStruct + 1, sizeof (NumberOfAlgorithms));
+
+ DigestSize = (TCG_EfiSpecIdEventAlgorithmSize *)((UINT8 *)TcgEfiSpecIdEventStruct + sizeof (*TcgEfiSpecIdEventStruct) + sizeof (NumberOfAlgorithms));
+ VendorInfoSize = (UINT8 *)&DigestSize[NumberOfAlgorithms];
+ return sizeof (TCG_EfiSpecIDEventStruct) + sizeof (UINT32) + (NumberOfAlgorithms * sizeof (TCG_EfiSpecIdEventAlgorithmSize)) + sizeof (UINT8) + (*VendorInfoSize);
+}
+
+/**
+ This function dump TD Event (including the Digests).
+
+ @param[in] CcEvent TD Event structure.
+**/
+VOID
+DumpCcEvent (
+ IN CC_EVENT *CcEvent
+ )
+{
+ UINT32 DigestIndex;
+ UINT32 DigestCount;
+ TPMI_ALG_HASH HashAlgo;
+ UINT32 DigestSize;
+ UINT8 *DigestBuffer;
+ UINT32 EventSize;
+ UINT8 *EventBuffer;
+
+ DEBUG ((DEBUG_INFO, "Cc Event:\n"));
+ DEBUG ((DEBUG_INFO, " MrIndex - %d\n", CcEvent->MrIndex));
+ DEBUG ((DEBUG_INFO, " EventType - 0x%08x\n", CcEvent->EventType));
+ DEBUG ((DEBUG_INFO, " DigestCount: 0x%08x\n", CcEvent->Digests.count));
+
+ DigestCount = CcEvent->Digests.count;
+ HashAlgo = CcEvent->Digests.digests[0].hashAlg;
+ DigestBuffer = (UINT8 *)&CcEvent->Digests.digests[0].digest;
+ for (DigestIndex = 0; DigestIndex < DigestCount; DigestIndex++) {
+ DEBUG ((DEBUG_INFO, " HashAlgo : 0x%04x\n", HashAlgo));
+ DEBUG ((DEBUG_INFO, " Digest(%d): \n", DigestIndex));
+ DigestSize = GetHashSizeFromAlgo (HashAlgo);
+ InternalDumpHex (DigestBuffer, DigestSize);
+ //
+ // Prepare next
+ //
+ CopyMem (&HashAlgo, DigestBuffer + DigestSize, sizeof (TPMI_ALG_HASH));
+ DigestBuffer = DigestBuffer + DigestSize + sizeof (TPMI_ALG_HASH);
+ }
+
+ DigestBuffer = DigestBuffer - sizeof (TPMI_ALG_HASH);
+
+ CopyMem (&EventSize, DigestBuffer, sizeof (CcEvent->EventSize));
+ DEBUG ((DEBUG_INFO, " EventSize - 0x%08x\n", EventSize));
+ EventBuffer = DigestBuffer + sizeof (CcEvent->EventSize);
+ InternalDumpHex (EventBuffer, EventSize);
+ DEBUG ((DEBUG_INFO, "\n"));
+}
+
+/**
+ This function returns size of Td Table event.
+
+ @param[in] CcEvent Td Table event structure.
+
+ @return size of Td event.
+**/
+UINTN
+GetCcEventSize (
+ IN CC_EVENT *CcEvent
+ )
+{
+ UINT32 DigestIndex;
+ UINT32 DigestCount;
+ TPMI_ALG_HASH HashAlgo;
+ UINT32 DigestSize;
+ UINT8 *DigestBuffer;
+ UINT32 EventSize;
+ UINT8 *EventBuffer;
+
+ DigestCount = CcEvent->Digests.count;
+ HashAlgo = CcEvent->Digests.digests[0].hashAlg;
+ DigestBuffer = (UINT8 *)&CcEvent->Digests.digests[0].digest;
+ for (DigestIndex = 0; DigestIndex < DigestCount; DigestIndex++) {
+ DigestSize = GetHashSizeFromAlgo (HashAlgo);
+ //
+ // Prepare next
+ //
+ CopyMem (&HashAlgo, DigestBuffer + DigestSize, sizeof (TPMI_ALG_HASH));
+ DigestBuffer = DigestBuffer + DigestSize + sizeof (TPMI_ALG_HASH);
+ }
+
+ DigestBuffer = DigestBuffer - sizeof (TPMI_ALG_HASH);
+
+ CopyMem (&EventSize, DigestBuffer, sizeof (CcEvent->EventSize));
+ EventBuffer = DigestBuffer + sizeof (CcEvent->EventSize);
+
+ return (UINTN)EventBuffer + EventSize - (UINTN)CcEvent;
+}
+
+/**
+ This function dump CC event log.
+ TDVF only supports EFI_CC_EVENT_LOG_FORMAT_TCG_2
+
+ @param[in] EventLogFormat The type of the event log for which the information is requested.
+ @param[in] EventLogLocation A pointer to the memory address of the event log.
+ @param[in] EventLogLastEntry If the Event Log contains more than one entry, this is a pointer to the
+ address of the start of the last entry in the event log in memory.
+ @param[in] FinalEventsTable A pointer to the memory address of the final event table.
+**/
+VOID
+DumpCcEventLog (
+ IN EFI_CC_EVENT_LOG_FORMAT EventLogFormat,
+ IN EFI_PHYSICAL_ADDRESS EventLogLocation,
+ IN EFI_PHYSICAL_ADDRESS EventLogLastEntry,
+ IN EFI_CC_FINAL_EVENTS_TABLE *FinalEventsTable
+ )
+{
+ TCG_PCR_EVENT_HDR *EventHdr;
+ CC_EVENT *CcEvent;
+ TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct;
+ UINTN NumberOfEvents;
+
+ DEBUG ((DEBUG_INFO, "EventLogFormat: (0x%x)\n", EventLogFormat));
+ ASSERT (EventLogFormat == EFI_CC_EVENT_LOG_FORMAT_TCG_2);
+
+ //
+ // Dump first event.
+ // The first event is always the TCG_PCR_EVENT_HDR
+ // After this event is a TCG_EfiSpecIDEventStruct
+ //
+ EventHdr = (TCG_PCR_EVENT_HDR *)(UINTN)EventLogLocation;
+ DumpPcrEvent (EventHdr);
+
+ TcgEfiSpecIdEventStruct = (TCG_EfiSpecIDEventStruct *)(EventHdr + 1);
+ DumpTcgEfiSpecIdEventStruct (TcgEfiSpecIdEventStruct);
+
+ //
+ // Then the CcEvent (Its structure is similar to TCG_PCR_EVENT2)
+ //
+ CcEvent = (CC_EVENT *)((UINTN)TcgEfiSpecIdEventStruct + GetTcgEfiSpecIdEventStructSize (TcgEfiSpecIdEventStruct));
+ while ((UINTN)CcEvent <= EventLogLastEntry) {
+ DumpCcEvent (CcEvent);
+ CcEvent = (CC_EVENT *)((UINTN)CcEvent + GetCcEventSize (CcEvent));
+ }
+
+ if (FinalEventsTable == NULL) {
+ DEBUG ((DEBUG_INFO, "FinalEventsTable: NOT FOUND\n"));
+ } else {
+ DEBUG ((DEBUG_INFO, "FinalEventsTable: (0x%x)\n", FinalEventsTable));
+ DEBUG ((DEBUG_INFO, " Version: (0x%x)\n", FinalEventsTable->Version));
+ DEBUG ((DEBUG_INFO, " NumberOfEvents: (0x%x)\n", FinalEventsTable->NumberOfEvents));
+
+ CcEvent = (CC_EVENT *)(UINTN)(FinalEventsTable + 1);
+ for (NumberOfEvents = 0; NumberOfEvents < FinalEventsTable->NumberOfEvents; NumberOfEvents++) {
+ DumpCcEvent (CcEvent);
+ CcEvent = (CC_EVENT *)((UINTN)CcEvent + GetCcEventSize (CcEvent));
+ }
+ }
+
+ return;
+}
+
+/**
+ The EFI_CC_MEASUREMENT_PROTOCOL Get Event Log function call allows a caller to
+ retrieve the address of a given event log and its last entry.
+
+ @param[in] This Indicates the calling context
+ @param[in] EventLogFormat The type of the event log for which the information is requested.
+ @param[out] EventLogLocation A pointer to the memory address of the event log.
+ @param[out] EventLogLastEntry If the Event Log contains more than one entry, this is a pointer to the
+ address of the start of the last entry in the event log in memory.
+ @param[out] EventLogTruncated If the Event Log is missing at least one entry because an event would
+ have exceeded the area allocated for events, this value is set to TRUE.
+ Otherwise, the value will be FALSE and the Event Log will be complete.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect
+ (e.g. asking for an event log whose format is not supported).
+**/
+EFI_STATUS
+EFIAPI
+TdGetEventLog (
+ IN EFI_CC_MEASUREMENT_PROTOCOL *This,
+ IN EFI_CC_EVENT_LOG_FORMAT EventLogFormat,
+ OUT EFI_PHYSICAL_ADDRESS *EventLogLocation,
+ OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry,
+ OUT BOOLEAN *EventLogTruncated
+ )
+{
+ UINTN Index = 0;
+
+ DEBUG ((DEBUG_INFO, "TdGetEventLog ... (0x%x)\n", EventLogFormat));
+ ASSERT (EventLogFormat == EFI_CC_EVENT_LOG_FORMAT_TCG_2);
+
+ if (EventLogLocation != NULL) {
+ *EventLogLocation = mTdxDxeData.EventLogAreaStruct[Index].Lasa;
+ DEBUG ((DEBUG_INFO, "TdGetEventLog (EventLogLocation - %x)\n", *EventLogLocation));
+ }
+
+ if (EventLogLastEntry != NULL) {
+ if (!mTdxDxeData.EventLogAreaStruct[Index].EventLogStarted) {
+ *EventLogLastEntry = (EFI_PHYSICAL_ADDRESS)(UINTN)0;
+ } else {
+ *EventLogLastEntry = (EFI_PHYSICAL_ADDRESS)(UINTN)mTdxDxeData.EventLogAreaStruct[Index].LastEvent;
+ }
+
+ DEBUG ((DEBUG_INFO, "TdGetEventLog (EventLogLastEntry - %x)\n", *EventLogLastEntry));
+ }
+
+ if (EventLogTruncated != NULL) {
+ *EventLogTruncated = mTdxDxeData.EventLogAreaStruct[Index].EventLogTruncated;
+ DEBUG ((DEBUG_INFO, "TdGetEventLog (EventLogTruncated - %x)\n", *EventLogTruncated));
+ }
+
+ DEBUG ((DEBUG_INFO, "TdGetEventLog - %r\n", EFI_SUCCESS));
+
+ // Dump Event Log for debug purpose
+ if ((EventLogLocation != NULL) && (EventLogLastEntry != NULL)) {
+ DumpCcEventLog (EventLogFormat, *EventLogLocation, *EventLogLastEntry, mTdxDxeData.FinalEventsTable[Index]);
+ }
+
+ //
+ // All events generated after the invocation of EFI_TCG2_GET_EVENT_LOG SHALL be stored
+ // in an instance of an EFI_CONFIGURATION_TABLE named by the VendorGuid of EFI_TCG2_FINAL_EVENTS_TABLE_GUID.
+ //
+ mTdxDxeData.GetEventLogCalled[Index] = TRUE;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Return if this is a Tcg800155PlatformIdEvent.
+
+ @param[in] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR/TCG_PCR_EVENT_EX data structure.
+ @param[in] NewEventHdrSize New event header size.
+ @param[in] NewEventData Pointer to the new event data.
+ @param[in] NewEventSize New event data size.
+
+ @retval TRUE This is a Tcg800155PlatformIdEvent.
+ @retval FALSE This is NOT a Tcg800155PlatformIdEvent.
+
+**/
+BOOLEAN
+Is800155Event (
+ IN VOID *NewEventHdr,
+ IN UINT32 NewEventHdrSize,
+ IN UINT8 *NewEventData,
+ IN UINT32 NewEventSize
+ )
+{
+ if ((((TCG_PCR_EVENT2_HDR *)NewEventHdr)->EventType == EV_NO_ACTION) &&
+ (NewEventSize >= sizeof (TCG_Sp800_155_PlatformId_Event2)) &&
+ (CompareMem (
+ NewEventData,
+ TCG_Sp800_155_PlatformId_Event2_SIGNATURE,
+ sizeof (TCG_Sp800_155_PlatformId_Event2_SIGNATURE) - 1
+ ) == 0))
+ {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/**
+ Add a new entry to the Event Log.
+
+ @param[in, out] EventLogAreaStruct The event log area data structure
+ @param[in] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR/TCG_PCR_EVENT_EX data structure.
+ @param[in] NewEventHdrSize New event header size.
+ @param[in] NewEventData Pointer to the new event data.
+ @param[in] NewEventSize New event data size.
+
+ @retval EFI_SUCCESS The new event log entry was added.
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.
+
+**/
+EFI_STATUS
+TcgCommLogEvent (
+ IN OUT CC_EVENT_LOG_AREA_STRUCT *EventLogAreaStruct,
+ IN VOID *NewEventHdr,
+ IN UINT32 NewEventHdrSize,
+ IN UINT8 *NewEventData,
+ IN UINT32 NewEventSize
+ )
+{
+ UINTN NewLogSize;
+ BOOLEAN Record800155Event;
+ CC_EVENT_HDR *CcEventHdr;
+
+ CcEventHdr = (CC_EVENT_HDR *)NewEventHdr;
+ DEBUG ((DEBUG_VERBOSE, "Td: Try to log event. Index = %d, EventType = 0x%x\n", CcEventHdr->MrIndex, CcEventHdr->EventType));
+
+ if (NewEventSize > MAX_ADDRESS - NewEventHdrSize) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ NewLogSize = NewEventHdrSize + NewEventSize;
+
+ if (NewLogSize > MAX_ADDRESS - EventLogAreaStruct->EventLogSize) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ if (NewLogSize + EventLogAreaStruct->EventLogSize > EventLogAreaStruct->Laml) {
+ DEBUG ((DEBUG_INFO, " Laml - 0x%x\n", EventLogAreaStruct->Laml));
+ DEBUG ((DEBUG_INFO, " NewLogSize - 0x%x\n", NewLogSize));
+ DEBUG ((DEBUG_INFO, " LogSize - 0x%x\n", EventLogAreaStruct->EventLogSize));
+ DEBUG ((DEBUG_INFO, "TcgCommLogEvent - %r\n", EFI_OUT_OF_RESOURCES));
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
+ // Check 800-155 event
+ // Record to 800-155 event offset only.
+ // If the offset is 0, no need to record.
+ //
+ Record800155Event = Is800155Event (NewEventHdr, NewEventHdrSize, NewEventData, NewEventSize);
+ if (Record800155Event) {
+ DEBUG ((DEBUG_INFO, "It is 800155Event.\n"));
+
+ if (EventLogAreaStruct->Next800155EventOffset != 0) {
+ CopyMem (
+ (UINT8 *)(UINTN)EventLogAreaStruct->Lasa + EventLogAreaStruct->Next800155EventOffset + NewLogSize,
+ (UINT8 *)(UINTN)EventLogAreaStruct->Lasa + EventLogAreaStruct->Next800155EventOffset,
+ EventLogAreaStruct->EventLogSize - EventLogAreaStruct->Next800155EventOffset
+ );
+
+ CopyMem (
+ (UINT8 *)(UINTN)EventLogAreaStruct->Lasa + EventLogAreaStruct->Next800155EventOffset,
+ NewEventHdr,
+ NewEventHdrSize
+ );
+ CopyMem (
+ (UINT8 *)(UINTN)EventLogAreaStruct->Lasa + EventLogAreaStruct->Next800155EventOffset + NewEventHdrSize,
+ NewEventData,
+ NewEventSize
+ );
+
+ EventLogAreaStruct->Next800155EventOffset += NewLogSize;
+ EventLogAreaStruct->LastEvent += NewLogSize;
+ EventLogAreaStruct->EventLogSize += NewLogSize;
+ }
+
+ return EFI_SUCCESS;
+ }
+
+ EventLogAreaStruct->LastEvent = (UINT8 *)(UINTN)EventLogAreaStruct->Lasa + EventLogAreaStruct->EventLogSize;
+ EventLogAreaStruct->EventLogSize += NewLogSize;
+
+ CopyMem (EventLogAreaStruct->LastEvent, NewEventHdr, NewEventHdrSize);
+ CopyMem (
+ EventLogAreaStruct->LastEvent + NewEventHdrSize,
+ NewEventData,
+ NewEventSize
+ );
+
+ return EFI_SUCCESS;
+}
+
+/**
+ RTMR[0] => PCR[1,7]
+ RTMR[1] => PCR[2,3,4,5]
+ RTMR[2] => PCR[8~15]
+ RTMR[3] => NA
+**/
+UINT32
+EFIAPI
+MapPcrToMrIndex (
+ IN UINT32 PCRIndex
+ )
+{
+ UINT32 MrIndex;
+
+ if ((PCRIndex > 16) || (PCRIndex == 6) || (PCRIndex == 0)) {
+ ASSERT (FALSE);
+ return INVALID_RTMR_INDEX;
+ }
+
+ MrIndex = 0;
+ if ((PCRIndex == 1) || (PCRIndex == 7)) {
+ MrIndex = 0;
+ } else if ((PCRIndex > 1) && (PCRIndex < 6)) {
+ MrIndex = 1;
+ } else if ((PCRIndex > 7) && (PCRIndex < 16)) {
+ MrIndex = 2;
+ }
+
+ return MrIndex;
+}
+
+EFI_STATUS
+EFIAPI
+TdMapPcrToMrIndex (
+ IN EFI_CC_MEASUREMENT_PROTOCOL *This,
+ IN UINT32 PCRIndex,
+ OUT UINT32 *MrIndex
+ )
+{
+ if (MrIndex == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((PCRIndex > 16) || (PCRIndex == 0) || (PCRIndex == 6)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *MrIndex = MapPcrToMrIndex (PCRIndex);
+
+ return *MrIndex == INVALID_RTMR_INDEX ? EFI_INVALID_PARAMETER : EFI_SUCCESS;
+}
+
+/**
+ Add a new entry to the Event Log.
+
+ @param[in] EventLogFormat The type of the event log for which the information is requested.
+ @param[in] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR/TCG_PCR_EVENT_EX data structure.
+ @param[in] NewEventHdrSize New event header size.
+ @param[in] NewEventData Pointer to the new event data.
+ @param[in] NewEventSize New event data size.
+
+ @retval EFI_SUCCESS The new event log entry was added.
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.
+
+**/
+EFI_STATUS
+TdxDxeLogEvent (
+ IN EFI_CC_EVENT_LOG_FORMAT EventLogFormat,
+ IN VOID *NewEventHdr,
+ IN UINT32 NewEventHdrSize,
+ IN UINT8 *NewEventData,
+ IN UINT32 NewEventSize
+ )
+{
+ EFI_STATUS Status;
+ UINTN Index;
+ CC_EVENT_LOG_AREA_STRUCT *EventLogAreaStruct;
+
+ if (EventLogFormat != EFI_CC_EVENT_LOG_FORMAT_TCG_2) {
+ ASSERT (FALSE);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Index = 0;
+
+ //
+ // Record to normal event log
+ //
+ EventLogAreaStruct = &mTdxDxeData.EventLogAreaStruct[Index];
+
+ if (EventLogAreaStruct->EventLogTruncated) {
+ return EFI_VOLUME_FULL;
+ }
+
+ Status = TcgCommLogEvent (
+ EventLogAreaStruct,
+ NewEventHdr,
+ NewEventHdrSize,
+ NewEventData,
+ NewEventSize
+ );
+
+ if (Status == EFI_OUT_OF_RESOURCES) {
+ EventLogAreaStruct->EventLogTruncated = TRUE;
+ return EFI_VOLUME_FULL;
+ } else if (Status == EFI_SUCCESS) {
+ EventLogAreaStruct->EventLogStarted = TRUE;
+ }
+
+ //
+ // If GetEventLog is called, record to FinalEventsTable, too.
+ //
+ if (mTdxDxeData.GetEventLogCalled[Index]) {
+ if (mTdxDxeData.FinalEventsTable[Index] == NULL) {
+ //
+ // no need for FinalEventsTable
+ //
+ return EFI_SUCCESS;
+ }
+
+ EventLogAreaStruct = &mTdxDxeData.FinalEventLogAreaStruct[Index];
+
+ if (EventLogAreaStruct->EventLogTruncated) {
+ return EFI_VOLUME_FULL;
+ }
+
+ Status = TcgCommLogEvent (
+ EventLogAreaStruct,
+ NewEventHdr,
+ NewEventHdrSize,
+ NewEventData,
+ NewEventSize
+ );
+ if (Status == EFI_OUT_OF_RESOURCES) {
+ EventLogAreaStruct->EventLogTruncated = TRUE;
+ return EFI_VOLUME_FULL;
+ } else if (Status == EFI_SUCCESS) {
+ EventLogAreaStruct->EventLogStarted = TRUE;
+ //
+ // Increase the NumberOfEvents in FinalEventsTable
+ //
+ (mTdxDxeData.FinalEventsTable[Index])->NumberOfEvents++;
+ DEBUG ((DEBUG_INFO, "FinalEventsTable->NumberOfEvents - 0x%x\n", (mTdxDxeData.FinalEventsTable[Index])->NumberOfEvents));
+ DEBUG ((DEBUG_INFO, " Size - 0x%x\n", (UINTN)EventLogAreaStruct->EventLogSize));
+ }
+ }
+
+ return Status;
+}
+
+/**
+ Get TPML_DIGEST_VALUES compact binary buffer size.
+
+ @param[in] DigestListBin TPML_DIGEST_VALUES compact binary buffer.
+
+ @return TPML_DIGEST_VALUES compact binary buffer size.
+**/
+UINT32
+GetDigestListBinSize (
+ IN VOID *DigestListBin
+ )
+{
+ UINTN Index;
+ UINT16 DigestSize;
+ UINT32 TotalSize;
+ UINT32 Count;
+ TPMI_ALG_HASH HashAlg;
+
+ Count = ReadUnaligned32 (DigestListBin);
+ TotalSize = sizeof (Count);
+ DigestListBin = (UINT8 *)DigestListBin + sizeof (Count);
+ for (Index = 0; Index < Count; Index++) {
+ HashAlg = ReadUnaligned16 (DigestListBin);
+ TotalSize += sizeof (HashAlg);
+ DigestListBin = (UINT8 *)DigestListBin + sizeof (HashAlg);
+
+ DigestSize = GetHashSizeFromAlgo (HashAlg);
+ TotalSize += DigestSize;
+ DigestListBin = (UINT8 *)DigestListBin + DigestSize;
+ }
+
+ return TotalSize;
+}
+
+/**
+ Copy TPML_DIGEST_VALUES compact binary into a buffer
+
+ @param[in,out] Buffer Buffer to hold copied TPML_DIGEST_VALUES compact binary.
+ @param[in] DigestListBin TPML_DIGEST_VALUES compact binary buffer.
+ @param[in] HashAlgorithmMask HASH bits corresponding to the desired digests to copy.
+ @param[out] HashAlgorithmMaskCopied Pointer to HASH bits corresponding to the digests copied.
+
+ @return The end of buffer to hold TPML_DIGEST_VALUES compact binary.
+**/
+VOID *
+CopyDigestListBinToBuffer (
+ IN OUT VOID *Buffer,
+ IN VOID *DigestListBin,
+ IN UINT32 HashAlgorithmMask,
+ OUT UINT32 *HashAlgorithmMaskCopied
+ )
+{
+ UINTN Index;
+ UINT16 DigestSize;
+ UINT32 Count;
+ TPMI_ALG_HASH HashAlg;
+ UINT32 DigestListCount;
+ UINT32 *DigestListCountPtr;
+
+ DigestListCountPtr = (UINT32 *)Buffer;
+ DigestListCount = 0;
+ *HashAlgorithmMaskCopied = 0;
+
+ Count = ReadUnaligned32 (DigestListBin);
+ Buffer = (UINT8 *)Buffer + sizeof (Count);
+ DigestListBin = (UINT8 *)DigestListBin + sizeof (Count);
+ for (Index = 0; Index < Count; Index++) {
+ HashAlg = ReadUnaligned16 (DigestListBin);
+ DigestListBin = (UINT8 *)DigestListBin + sizeof (HashAlg);
+ DigestSize = GetHashSizeFromAlgo (HashAlg);
+
+ if ((HashAlg & HashAlgorithmMask) != 0) {
+ CopyMem (Buffer, &HashAlg, sizeof (HashAlg));
+ Buffer = (UINT8 *)Buffer + sizeof (HashAlg);
+ CopyMem (Buffer, DigestListBin, DigestSize);
+ Buffer = (UINT8 *)Buffer + DigestSize;
+ DigestListCount++;
+ (*HashAlgorithmMaskCopied) |= GetHashMaskFromAlgo (HashAlg);
+ } else {
+ DEBUG ((DEBUG_ERROR, "WARNING: CopyDigestListBinToBuffer Event log has HashAlg unsupported by PCR bank (0x%x)\n", HashAlg));
+ }
+
+ DigestListBin = (UINT8 *)DigestListBin + DigestSize;
+ }
+
+ WriteUnaligned32 (DigestListCountPtr, DigestListCount);
+
+ return Buffer;
+}
+
+/**
+ Add a new entry to the Event Log. The call chain is like below:
+ TdxDxeLogHashEvent -> TdxDxeLogEvent -> TcgCommonLogEvent
+
+ Before this function is called, the event information (including the digest)
+ is ready.
+
+ @param[in] DigestList A list of digest.
+ @param[in,out] NewEventHdr Pointer to a TD_EVENT_HDR data structure.
+ @param[in] NewEventData Pointer to the new event data.
+
+ @retval EFI_SUCCESS The new event log entry was added.
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.
+**/
+EFI_STATUS
+TdxDxeLogHashEvent (
+ IN TPML_DIGEST_VALUES *DigestList,
+ IN OUT CC_EVENT_HDR *NewEventHdr,
+ IN UINT8 *NewEventData
+ )
+{
+ EFI_STATUS Status;
+ EFI_TPL OldTpl;
+ EFI_STATUS RetStatus;
+ CC_EVENT CcEvent;
+ UINT8 *DigestBuffer;
+ UINT32 *EventSizePtr;
+ EFI_CC_EVENT_LOG_FORMAT LogFormat;
+
+ RetStatus = EFI_SUCCESS;
+ LogFormat = EFI_CC_EVENT_LOG_FORMAT_TCG_2;
+
+ ZeroMem (&CcEvent, sizeof (CcEvent));
+ //
+ // The index of event log is designed as below:
+ // 0 : MRTD
+ // 1-4: RTMR[0-3]
+ //
+ CcEvent.MrIndex = NewEventHdr->MrIndex + 1;
+ CcEvent.EventType = NewEventHdr->EventType;
+ DigestBuffer = (UINT8 *)&CcEvent.Digests;
+ EventSizePtr = CopyDigestListToBuffer (DigestBuffer, DigestList, HASH_ALG_SHA384);
+ CopyMem (EventSizePtr, &NewEventHdr->EventSize, sizeof (NewEventHdr->EventSize));
+
+ //
+ // Enter critical region
+ //
+ OldTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
+ Status = TdxDxeLogEvent (
+ LogFormat,
+ &CcEvent,
+ sizeof (CcEvent.MrIndex) + sizeof (CcEvent.EventType) + GetDigestListBinSize (DigestBuffer) + sizeof (CcEvent.EventSize),
+ NewEventData,
+ NewEventHdr->EventSize
+ );
+ if (Status != EFI_SUCCESS) {
+ RetStatus = Status;
+ }
+
+ gBS->RestoreTPL (OldTpl);
+
+ return RetStatus;
+}
+
+/**
+ Do a hash operation on a data buffer, extend a specific RTMR with the hash result,
+ and add an entry to the Event Log.
+
+ @param[in] Flags Bitmap providing additional information.
+ @param[in] HashData Physical address of the start of the data buffer
+ to be hashed, extended, and logged.
+ @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData
+ @param[in, out] NewEventHdr Pointer to a TD_EVENT_HDR data structure.
+ @param[in] NewEventData Pointer to the new event data.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+
+**/
+EFI_STATUS
+TdxDxeHashLogExtendEvent (
+ IN UINT64 Flags,
+ IN UINT8 *HashData,
+ IN UINT64 HashDataLen,
+ IN OUT CC_EVENT_HDR *NewEventHdr,
+ IN UINT8 *NewEventData
+ )
+{
+ EFI_STATUS Status;
+ TPML_DIGEST_VALUES DigestList;
+ CC_EVENT_HDR NoActionEvent;
+
+ if (NewEventHdr->EventType == EV_NO_ACTION) {
+ //
+ // Do not do RTMR extend for EV_NO_ACTION
+ //
+ Status = EFI_SUCCESS;
+ InitNoActionEvent (&NoActionEvent, NewEventHdr->EventSize);
+ if ((Flags & EFI_CC_FLAG_EXTEND_ONLY) == 0) {
+ Status = TdxDxeLogHashEvent (&(NoActionEvent.Digests), NewEventHdr, NewEventData);
+ }
+
+ return Status;
+ }
+
+ Status = HashAndExtend (
+ NewEventHdr->MrIndex,
+ HashData,
+ (UINTN)HashDataLen,
+ &DigestList
+ );
+ if (!EFI_ERROR (Status)) {
+ if ((Flags & EFI_CC_FLAG_EXTEND_ONLY) == 0) {
+ Status = TdxDxeLogHashEvent (&DigestList, NewEventHdr, NewEventData);
+ }
+ }
+
+ return Status;
+}
+
+/**
+ The EFI_CC_MEASUREMENT_PROTOCOL HashLogExtendEvent function call provides callers with
+ an opportunity to extend and optionally log events without requiring
+ knowledge of actual TPM commands.
+ The extend operation will occur even if this function cannot create an event
+ log entry (e.g. due to the event log being full).
+
+ @param[in] This Indicates the calling context
+ @param[in] Flags Bitmap providing additional information.
+ @param[in] DataToHash Physical address of the start of the data buffer to be hashed.
+ @param[in] DataToHashLen The length in bytes of the buffer referenced by DataToHash.
+ @param[in] Event Pointer to data buffer containing information about the event.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+ @retval EFI_VOLUME_FULL The extend operation occurred, but the event could not be written to one or more event logs.
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
+ @retval EFI_UNSUPPORTED The PE/COFF image type is not supported.
+**/
+EFI_STATUS
+EFIAPI
+TdHashLogExtendEvent (
+ IN EFI_CC_MEASUREMENT_PROTOCOL *This,
+ IN UINT64 Flags,
+ IN EFI_PHYSICAL_ADDRESS DataToHash,
+ IN UINT64 DataToHashLen,
+ IN EFI_CC_EVENT *CcEvent
+ )
+{
+ EFI_STATUS Status;
+ CC_EVENT_HDR NewEventHdr;
+ TPML_DIGEST_VALUES DigestList;
+
+ DEBUG ((DEBUG_VERBOSE, "TdHashLogExtendEvent ...\n"));
+
+ if ((This == NULL) || (CcEvent == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Do not check hash data size for EV_NO_ACTION event.
+ //
+ if ((CcEvent->Header.EventType != EV_NO_ACTION) && (DataToHash == 0)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (CcEvent->Size < CcEvent->Header.HeaderSize + sizeof (UINT32)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (CcEvent->Header.MrIndex > 4) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ NewEventHdr.MrIndex = CcEvent->Header.MrIndex;
+ NewEventHdr.EventType = CcEvent->Header.EventType;
+ NewEventHdr.EventSize = CcEvent->Size - sizeof (UINT32) - CcEvent->Header.HeaderSize;
+ if ((Flags & EFI_CC_FLAG_PE_COFF_IMAGE) != 0) {
+ Status = MeasurePeImageAndExtend (
+ NewEventHdr.MrIndex,
+ DataToHash,
+ (UINTN)DataToHashLen,
+ &DigestList
+ );
+ if (!EFI_ERROR (Status)) {
+ if ((Flags & EFI_CC_FLAG_EXTEND_ONLY) == 0) {
+ Status = TdxDxeLogHashEvent (&DigestList, &NewEventHdr, CcEvent->Event);
+ }
+ }
+ } else {
+ Status = TdxDxeHashLogExtendEvent (
+ Flags,
+ (UINT8 *)(UINTN)DataToHash,
+ DataToHashLen,
+ &NewEventHdr,
+ CcEvent->Event
+ );
+ }
+
+ DEBUG ((DEBUG_VERBOSE, "TdHashLogExtendEvent - %r\n", Status));
+ return Status;
+}
+
+EFI_CC_MEASUREMENT_PROTOCOL mTdProtocol = {
+ TdGetCapability,
+ TdGetEventLog,
+ TdHashLogExtendEvent,
+ TdMapPcrToMrIndex,
+};
+
+#define TD_HASH_COUNT 1
+#define TEMP_BUF_LEN (sizeof(TCG_EfiSpecIDEventStruct) + sizeof(UINT32) \
+ + (TD_HASH_COUNT * sizeof(TCG_EfiSpecIdEventAlgorithmSize)) + sizeof(UINT8))
+
+/**
+ Initialize the TD Event Log and log events passed from the PEI phase.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+
+**/
+EFI_STATUS
+SetupCcEventLog (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS Lasa;
+ UINTN Index;
+ TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct;
+ UINT8 TempBuf[TEMP_BUF_LEN];
+ TCG_PCR_EVENT_HDR SpecIdEvent;
+ TCG_EfiSpecIdEventAlgorithmSize *DigestSize;
+ TCG_EfiSpecIdEventAlgorithmSize *TempDigestSize;
+ UINT8 *VendorInfoSize;
+ UINT32 NumberOfAlgorithms;
+ EFI_CC_EVENT_LOG_FORMAT LogFormat;
+ EFI_PEI_HOB_POINTERS GuidHob;
+ CC_EVENT_HDR NoActionEvent;
+
+ Status = EFI_SUCCESS;
+ DEBUG ((DEBUG_INFO, "SetupCcEventLog\n"));
+
+ Index = 0;
+ LogFormat = EFI_CC_EVENT_LOG_FORMAT_TCG_2;
+
+ //
+ // 1. Create Log Area
+ //
+ mTdxDxeData.EventLogAreaStruct[Index].EventLogFormat = LogFormat;
+
+ // allocate pages for TD Event log
+ Status = gBS->AllocatePages (
+ AllocateAnyPages,
+ EfiACPIMemoryNVS,
+ EFI_SIZE_TO_PAGES (PcdGet32 (PcdTcgLogAreaMinLen)),
+ &Lasa
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ mTdxDxeData.EventLogAreaStruct[Index].Lasa = Lasa;
+ mTdxDxeData.EventLogAreaStruct[Index].Laml = PcdGet32 (PcdTcgLogAreaMinLen);
+ mTdxDxeData.EventLogAreaStruct[Index].Next800155EventOffset = 0;
+
+ //
+ // Report TD event log address and length, so that they can be reported in
+ // TD ACPI table. Ignore the return status, because those fields are optional.
+ //
+ PcdSet32S (PcdCcEventlogAcpiTableLaml, (UINT32)mTdxDxeData.EventLogAreaStruct[Index].Laml);
+ PcdSet64S (PcdCcEventlogAcpiTableLasa, mTdxDxeData.EventLogAreaStruct[Index].Lasa);
+
+ //
+ // To initialize them as 0xFF is recommended
+ // because the OS can know the last entry for that.
+ //
+ SetMem ((VOID *)(UINTN)Lasa, PcdGet32 (PcdTcgLogAreaMinLen), 0xFF);
+
+ //
+ // Create first entry for Log Header Entry Data
+ //
+
+ //
+ // TcgEfiSpecIdEventStruct
+ //
+ TcgEfiSpecIdEventStruct = (TCG_EfiSpecIDEventStruct *)TempBuf;
+ CopyMem (TcgEfiSpecIdEventStruct->signature, TCG_EfiSpecIDEventStruct_SIGNATURE_03, sizeof (TcgEfiSpecIdEventStruct->signature));
+
+ TcgEfiSpecIdEventStruct->platformClass = PcdGet8 (PcdTpmPlatformClass);
+
+ TcgEfiSpecIdEventStruct->specVersionMajor = TCG_EfiSpecIDEventStruct_SPEC_VERSION_MAJOR_TPM2;
+ TcgEfiSpecIdEventStruct->specVersionMinor = TCG_EfiSpecIDEventStruct_SPEC_VERSION_MINOR_TPM2;
+ TcgEfiSpecIdEventStruct->specErrata = TCG_EfiSpecIDEventStruct_SPEC_ERRATA_TPM2;
+ TcgEfiSpecIdEventStruct->uintnSize = sizeof (UINTN)/sizeof (UINT32);
+ NumberOfAlgorithms = 0;
+ DigestSize = (TCG_EfiSpecIdEventAlgorithmSize *)((UINT8 *)TcgEfiSpecIdEventStruct
+ + sizeof (*TcgEfiSpecIdEventStruct)
+ + sizeof (NumberOfAlgorithms));
+
+ TempDigestSize = DigestSize;
+ TempDigestSize += NumberOfAlgorithms;
+ TempDigestSize->algorithmId = TPM_ALG_SHA384;
+ TempDigestSize->digestSize = SHA384_DIGEST_SIZE;
+ NumberOfAlgorithms++;
+
+ CopyMem (TcgEfiSpecIdEventStruct + 1, &NumberOfAlgorithms, sizeof (NumberOfAlgorithms));
+ TempDigestSize = DigestSize;
+ TempDigestSize += NumberOfAlgorithms;
+ VendorInfoSize = (UINT8 *)TempDigestSize;
+ *VendorInfoSize = 0;
+
+ SpecIdEvent.PCRIndex = 1; // PCRIndex 0 maps to MrIndex 1
+ SpecIdEvent.EventType = EV_NO_ACTION;
+ ZeroMem (&SpecIdEvent.Digest, sizeof (SpecIdEvent.Digest));
+ SpecIdEvent.EventSize = (UINT32)GetTcgEfiSpecIdEventStructSize (TcgEfiSpecIdEventStruct);
+
+ //
+ // TD Event log re-use the spec of TCG2 Event log.
+ // Log TcgEfiSpecIdEventStruct as the first Event. Event format is TCG_PCR_EVENT.
+ // TCG EFI Protocol Spec. Section 5.3 Event Log Header
+ // TCG PC Client PFP spec. Section 9.2 Measurement Event Entries and Log
+ //
+ Status = TdxDxeLogEvent (
+ LogFormat,
+ &SpecIdEvent,
+ sizeof (SpecIdEvent),
+ (UINT8 *)TcgEfiSpecIdEventStruct,
+ SpecIdEvent.EventSize
+ );
+ //
+ // record the offset at the end of 800-155 event.
+ // the future 800-155 event can be inserted here.
+ //
+ mTdxDxeData.EventLogAreaStruct[Index].Next800155EventOffset = mTdxDxeData.EventLogAreaStruct[Index].EventLogSize;
+
+ //
+ // Tcg800155PlatformIdEvent. Event format is TCG_PCR_EVENT2
+ //
+ GuidHob.Guid = GetFirstGuidHob (&gTcg800155PlatformIdEventHobGuid);
+ while (GuidHob.Guid != NULL) {
+ InitNoActionEvent (&NoActionEvent, GET_GUID_HOB_DATA_SIZE (GuidHob.Guid));
+
+ Status = TdxDxeLogEvent (
+ LogFormat,
+ &NoActionEvent,
+ sizeof (NoActionEvent.MrIndex) + sizeof (NoActionEvent.EventType) + GetDigestListBinSize (&NoActionEvent.Digests) + sizeof (NoActionEvent.EventSize),
+ GET_GUID_HOB_DATA (GuidHob.Guid),
+ GET_GUID_HOB_DATA_SIZE (GuidHob.Guid)
+ );
+
+ GuidHob.Guid = GET_NEXT_HOB (GuidHob);
+ GuidHob.Guid = GetNextGuidHob (&gTcg800155PlatformIdEventHobGuid, GuidHob.Guid);
+ }
+
+ //
+ // 2. Create Final Log Area
+ //
+ Status = gBS->AllocatePages (
+ AllocateAnyPages,
+ EfiACPIMemoryNVS,
+ EFI_SIZE_TO_PAGES (PcdGet32 (PcdTcg2FinalLogAreaLen)),
+ &Lasa
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ SetMem ((VOID *)(UINTN)Lasa, PcdGet32 (PcdTcg2FinalLogAreaLen), 0xFF);
+
+ //
+ // Initialize
+ //
+ mTdxDxeData.FinalEventsTable[Index] = (VOID *)(UINTN)Lasa;
+ (mTdxDxeData.FinalEventsTable[Index])->Version = EFI_TCG2_FINAL_EVENTS_TABLE_VERSION;
+ (mTdxDxeData.FinalEventsTable[Index])->NumberOfEvents = 0;
+
+ mTdxDxeData.FinalEventLogAreaStruct[Index].EventLogFormat = LogFormat;
+ mTdxDxeData.FinalEventLogAreaStruct[Index].Lasa = Lasa + sizeof (EFI_CC_FINAL_EVENTS_TABLE);
+ mTdxDxeData.FinalEventLogAreaStruct[Index].Laml = PcdGet32 (PcdTcg2FinalLogAreaLen) - sizeof (EFI_CC_FINAL_EVENTS_TABLE);
+ mTdxDxeData.FinalEventLogAreaStruct[Index].EventLogSize = 0;
+ mTdxDxeData.FinalEventLogAreaStruct[Index].LastEvent = (VOID *)(UINTN)mTdxDxeData.FinalEventLogAreaStruct[Index].Lasa;
+ mTdxDxeData.FinalEventLogAreaStruct[Index].EventLogStarted = FALSE;
+ mTdxDxeData.FinalEventLogAreaStruct[Index].EventLogTruncated = FALSE;
+ mTdxDxeData.FinalEventLogAreaStruct[Index].Next800155EventOffset = 0;
+
+ //
+ // Install to configuration table for EFI_CC_EVENT_LOG_FORMAT_TCG_2
+ //
+ Status = gBS->InstallConfigurationTable (&gEfiCcFinalEventsTableGuid, (VOID *)mTdxDxeData.FinalEventsTable[Index]);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ return Status;
+}
+
+/**
+ Measure and log an action string, and extend the measurement result into RTMR.
+
+ @param[in] MrIndex MrIndex to extend
+ @param[in] String A specific string that indicates an Action event.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+TdMeasureAction (
+ IN UINT32 MrIndex,
+ IN CHAR8 *String
+ )
+{
+ CC_EVENT_HDR CcEvent;
+
+ CcEvent.MrIndex = MrIndex;
+ CcEvent.EventType = EV_EFI_ACTION;
+ CcEvent.EventSize = (UINT32)AsciiStrLen (String);
+ return TdxDxeHashLogExtendEvent (
+ 0,
+ (UINT8 *)String,
+ CcEvent.EventSize,
+ &CcEvent,
+ (UINT8 *)String
+ );
+}
+
+/**
+ Measure and log EFI handoff tables, and extend the measurement result into PCR[1].
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+MeasureHandoffTables (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ CC_EVENT_HDR CcEvent;
+ EFI_HANDOFF_TABLE_POINTERS HandoffTables;
+ UINTN ProcessorNum;
+ EFI_CPU_PHYSICAL_LOCATION *ProcessorLocBuf;
+
+ ProcessorLocBuf = NULL;
+ Status = EFI_SUCCESS;
+
+ if (PcdGet8 (PcdTpmPlatformClass) == TCG_PLATFORM_TYPE_SERVER) {
+ //
+ // Tcg Server spec.
+ // Measure each processor EFI_CPU_PHYSICAL_LOCATION with EV_TABLE_OF_DEVICES to PCR[1]
+ //
+ Status = GetProcessorsCpuLocation (&ProcessorLocBuf, &ProcessorNum);
+
+ if (!EFI_ERROR (Status)) {
+ CcEvent.MrIndex = MapPcrToMrIndex (1);
+ CcEvent.EventType = EV_TABLE_OF_DEVICES;
+ CcEvent.EventSize = sizeof (HandoffTables);
+
+ HandoffTables.NumberOfTables = 1;
+ HandoffTables.TableEntry[0].VendorGuid = gEfiMpServiceProtocolGuid;
+ HandoffTables.TableEntry[0].VendorTable = ProcessorLocBuf;
+
+ Status = TdxDxeHashLogExtendEvent (
+ 0,
+ (UINT8 *)(UINTN)ProcessorLocBuf,
+ sizeof (EFI_CPU_PHYSICAL_LOCATION) * ProcessorNum,
+ &CcEvent,
+ (UINT8 *)&HandoffTables
+ );
+
+ FreePool (ProcessorLocBuf);
+ }
+ }
+
+ return Status;
+}
+
+/**
+ Measure and log Separator event, and extend the measurement result into a specific PCR.
+
+ @param[in] PCRIndex PCR index.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+MeasureSeparatorEvent (
+ IN UINT32 MrIndex
+ )
+{
+ CC_EVENT_HDR CcEvent;
+ UINT32 EventData;
+
+ DEBUG ((DEBUG_INFO, "MeasureSeparatorEvent to Rtmr - %d\n", MrIndex));
+
+ EventData = 0;
+ CcEvent.MrIndex = MrIndex;
+ CcEvent.EventType = EV_SEPARATOR;
+ CcEvent.EventSize = (UINT32)sizeof (EventData);
+
+ return TdxDxeHashLogExtendEvent (
+ 0,
+ (UINT8 *)&EventData,
+ sizeof (EventData),
+ &CcEvent,
+ (UINT8 *)&EventData
+ );
+}
+
+/**
+ Measure and log an EFI variable, and extend the measurement result into a specific RTMR.
+
+ @param[in] MrIndex RTMR Index.
+ @param[in] EventType Event type.
+ @param[in] VarName A Null-terminated string that is the name of the vendor's variable.
+ @param[in] VendorGuid A unique identifier for the vendor.
+ @param[in] VarData The content of the variable data.
+ @param[in] VarSize The size of the variable data.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+MeasureVariable (
+ IN UINT32 MrIndex,
+ IN TCG_EVENTTYPE EventType,
+ IN CHAR16 *VarName,
+ IN EFI_GUID *VendorGuid,
+ IN VOID *VarData,
+ IN UINTN VarSize
+ )
+{
+ EFI_STATUS Status;
+ CC_EVENT_HDR CcEvent;
+ UINTN VarNameLength;
+ UEFI_VARIABLE_DATA *VarLog;
+
+ DEBUG ((DEBUG_INFO, "TdTcg2Dxe: MeasureVariable (Rtmr - %x, EventType - %x, ", (UINTN)MrIndex, (UINTN)EventType));
+ DEBUG ((DEBUG_INFO, "VariableName - %s, VendorGuid - %g)\n", VarName, VendorGuid));
+
+ VarNameLength = StrLen (VarName);
+ CcEvent.MrIndex = MrIndex;
+ CcEvent.EventType = EventType;
+
+ CcEvent.EventSize = (UINT32)(sizeof (*VarLog) + VarNameLength * sizeof (*VarName) + VarSize
+ - sizeof (VarLog->UnicodeName) - sizeof (VarLog->VariableData));
+
+ VarLog = (UEFI_VARIABLE_DATA *)AllocatePool (CcEvent.EventSize);
+ if (VarLog == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ VarLog->VariableName = *VendorGuid;
+ VarLog->UnicodeNameLength = VarNameLength;
+ VarLog->VariableDataLength = VarSize;
+ CopyMem (
+ VarLog->UnicodeName,
+ VarName,
+ VarNameLength * sizeof (*VarName)
+ );
+ if ((VarSize != 0) && (VarData != NULL)) {
+ CopyMem (
+ (CHAR16 *)VarLog->UnicodeName + VarNameLength,
+ VarData,
+ VarSize
+ );
+ }
+
+ if (EventType == EV_EFI_VARIABLE_DRIVER_CONFIG) {
+ //
+ // Digest is the event data (UEFI_VARIABLE_DATA)
+ //
+ Status = TdxDxeHashLogExtendEvent (
+ 0,
+ (UINT8 *)VarLog,
+ CcEvent.EventSize,
+ &CcEvent,
+ (UINT8 *)VarLog
+ );
+ } else {
+ ASSERT (VarData != NULL);
+ Status = TdxDxeHashLogExtendEvent (
+ 0,
+ (UINT8 *)VarData,
+ VarSize,
+ &CcEvent,
+ (UINT8 *)VarLog
+ );
+ }
+
+ FreePool (VarLog);
+ return Status;
+}
+
+/**
+ Read then Measure and log an EFI variable, and extend the measurement result into a specific RTMR.
+
+ @param[in] MrIndex RTMR Index.
+ @param[in] EventType Event type.
+ @param[in] VarName A Null-terminated string that is the name of the vendor's variable.
+ @param[in] VendorGuid A unique identifier for the vendor.
+ @param[out] VarSize The size of the variable data.
+ @param[out] VarData Pointer to the content of the variable.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+ReadAndMeasureVariable (
+ IN UINT32 MrIndex,
+ IN TCG_EVENTTYPE EventType,
+ IN CHAR16 *VarName,
+ IN EFI_GUID *VendorGuid,
+ OUT UINTN *VarSize,
+ OUT VOID **VarData
+ )
+{
+ EFI_STATUS Status;
+
+ Status = GetVariable2 (VarName, VendorGuid, VarData, VarSize);
+ if (EventType == EV_EFI_VARIABLE_DRIVER_CONFIG) {
+ if (EFI_ERROR (Status)) {
+ //
+ // It is valid case, so we need handle it.
+ //
+ *VarData = NULL;
+ *VarSize = 0;
+ }
+ } else {
+ //
+ // if status error, VarData is freed and set NULL by GetVariable2
+ //
+ if (EFI_ERROR (Status)) {
+ return EFI_NOT_FOUND;
+ }
+ }
+
+ Status = MeasureVariable (
+ MrIndex,
+ EventType,
+ VarName,
+ VendorGuid,
+ *VarData,
+ *VarSize
+ );
+ return Status;
+}
+
+/**
+ Read then Measure and log an EFI boot variable, and extend the measurement result into PCR[1].
+according to TCG PC Client PFP spec 0021 Section 2.4.4.2
+
+ @param[in] VarName A Null-terminated string that is the name of the vendor's variable.
+ @param[in] VendorGuid A unique identifier for the vendor.
+ @param[out] VarSize The size of the variable data.
+ @param[out] VarData Pointer to the content of the variable.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+ReadAndMeasureBootVariable (
+ IN CHAR16 *VarName,
+ IN EFI_GUID *VendorGuid,
+ OUT UINTN *VarSize,
+ OUT VOID **VarData
+ )
+{
+ //
+ // Boot variables are measured into (PCR[5]) RTMR[1],
+ // details in section 8.1 of TDVF design guide.
+ //
+ return ReadAndMeasureVariable (
+ MapPcrToMrIndex (5),
+ EV_EFI_VARIABLE_BOOT,
+ VarName,
+ VendorGuid,
+ VarSize,
+ VarData
+ );
+}
+
+/**
+ Read then Measure and log an EFI Secure variable, and extend the measurement result into PCR[7].
+
+ @param[in] VarName A Null-terminated string that is the name of the vendor's variable.
+ @param[in] VendorGuid A unique identifier for the vendor.
+ @param[out] VarSize The size of the variable data.
+ @param[out] VarData Pointer to the content of the variable.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+ReadAndMeasureSecureVariable (
+ IN CHAR16 *VarName,
+ IN EFI_GUID *VendorGuid,
+ OUT UINTN *VarSize,
+ OUT VOID **VarData
+ )
+{
+ return ReadAndMeasureVariable (
+ MapPcrToMrIndex (7),
+ EV_EFI_VARIABLE_DRIVER_CONFIG,
+ VarName,
+ VendorGuid,
+ VarSize,
+ VarData
+ );
+}
+
+/**
+ Measure and log all EFI boot variables, and extend the measurement result into a specific PCR.
+
+ The EFI boot variables are BootOrder and Boot#### variables.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+MeasureAllBootVariables (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINT16 *BootOrder;
+ UINTN BootCount;
+ UINTN Index;
+ VOID *BootVarData;
+ UINTN Size;
+
+ Status = ReadAndMeasureBootVariable (
+ mBootVarName,
+ &gEfiGlobalVariableGuid,
+ &BootCount,
+ (VOID **)&BootOrder
+ );
+ if ((Status == EFI_NOT_FOUND) || (BootOrder == NULL)) {
+ return EFI_SUCCESS;
+ }
+
+ if (EFI_ERROR (Status)) {
+ //
+ // BootOrder can't be NULL if status is not EFI_NOT_FOUND
+ //
+ FreePool (BootOrder);
+ return Status;
+ }
+
+ BootCount /= sizeof (*BootOrder);
+ for (Index = 0; Index < BootCount; Index++) {
+ UnicodeSPrint (mBootVarName, sizeof (mBootVarName), L"Boot%04x", BootOrder[Index]);
+ Status = ReadAndMeasureBootVariable (
+ mBootVarName,
+ &gEfiGlobalVariableGuid,
+ &Size,
+ &BootVarData
+ );
+ if (!EFI_ERROR (Status)) {
+ FreePool (BootVarData);
+ }
+ }
+
+ FreePool (BootOrder);
+ return EFI_SUCCESS;
+}
+
+/**
+ Measure and log all EFI Secure variables, and extend the measurement result into a specific PCR.
+
+ The EFI boot variables are BootOrder and Boot#### variables.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+MeasureAllSecureVariables (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ VOID *Data;
+ UINTN DataSize;
+ UINTN Index;
+
+ Status = EFI_NOT_FOUND;
+ for (Index = 0; Index < sizeof (mVariableType)/sizeof (mVariableType[0]); Index++) {
+ Status = ReadAndMeasureSecureVariable (
+ mVariableType[Index].VariableName,
+ mVariableType[Index].VendorGuid,
+ &DataSize,
+ &Data
+ );
+ if (!EFI_ERROR (Status)) {
+ if (Data != NULL) {
+ FreePool (Data);
+ }
+ }
+ }
+
+ //
+ // Measure DBT if present and not empty
+ //
+ Status = GetVariable2 (EFI_IMAGE_SECURITY_DATABASE2, &gEfiImageSecurityDatabaseGuid, &Data, &DataSize);
+ if (!EFI_ERROR (Status)) {
+ Status = MeasureVariable (
+ MapPcrToMrIndex (7),
+ EV_EFI_VARIABLE_DRIVER_CONFIG,
+ EFI_IMAGE_SECURITY_DATABASE2,
+ &gEfiImageSecurityDatabaseGuid,
+ Data,
+ DataSize
+ );
+ FreePool (Data);
+ } else {
+ DEBUG ((DEBUG_INFO, "Skip measuring variable %s since it's deleted\n", EFI_IMAGE_SECURITY_DATABASE2));
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Measure and log launch of FirmwareDebugger, and extend the measurement result into a specific PCR.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of memory.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+MeasureLaunchOfFirmwareDebugger (
+ VOID
+ )
+{
+ CC_EVENT_HDR CcEvent;
+
+ CcEvent.MrIndex = MapPcrToMrIndex (7);
+ CcEvent.EventType = EV_EFI_ACTION;
+ CcEvent.EventSize = sizeof (FIRMWARE_DEBUGGER_EVENT_STRING) - 1;
+ return TdxDxeHashLogExtendEvent (
+ 0,
+ (UINT8 *)FIRMWARE_DEBUGGER_EVENT_STRING,
+ sizeof (FIRMWARE_DEBUGGER_EVENT_STRING) - 1,
+ &CcEvent,
+ (UINT8 *)FIRMWARE_DEBUGGER_EVENT_STRING
+ );
+}
+
+/**
+ Measure and log all Secure Boot Policy, and extend the measurement result into a specific PCR.
+
+ Platform firmware adhering to the policy must therefore measure the following values into PCR[7]: (in order listed)
+ - The contents of the SecureBoot variable
+ - The contents of the PK variable
+ - The contents of the KEK variable
+ - The contents of the EFI_IMAGE_SECURITY_DATABASE variable
+ - The contents of the EFI_IMAGE_SECURITY_DATABASE1 variable
+ - Separator
+ - Entries in the EFI_IMAGE_SECURITY_DATABASE that are used to validate EFI Drivers or EFI Boot Applications in the boot path
+
+ NOTE: Because of the above, UEFI variables PK, KEK, EFI_IMAGE_SECURITY_DATABASE,
+ EFI_IMAGE_SECURITY_DATABASE1 and SecureBoot SHALL NOT be measured into PCR[3].
+
+ @param[in] Event Event whose notification function is being invoked
+ @param[in] Context Pointer to the notification function's context
+**/
+VOID
+EFIAPI
+MeasureSecureBootPolicy (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_STATUS Status;
+ VOID *Protocol;
+
+ Status = gBS->LocateProtocol (&gEfiVariableWriteArchProtocolGuid, NULL, (VOID **)&Protocol);
+ if (EFI_ERROR (Status)) {
+ return;
+ }
+
+ if (PcdGetBool (PcdFirmwareDebuggerInitialized)) {
+ Status = MeasureLaunchOfFirmwareDebugger ();
+ DEBUG ((DEBUG_INFO, "MeasureLaunchOfFirmwareDebugger - %r\n", Status));
+ }
+
+ Status = MeasureAllSecureVariables ();
+ DEBUG ((DEBUG_INFO, "MeasureAllSecureVariables - %r\n", Status));
+
+ //
+ // We need measure Separator(7) here, because this event must be between SecureBootPolicy (Configure)
+ // and ImageVerification (Authority)
+ // There might be a case that we need measure UEFI image from DriverOrder, besides BootOrder. So
+ // the Authority measurement happen before ReadToBoot event.
+ //
+ Status = MeasureSeparatorEvent (MapPcrToMrIndex (7));
+ DEBUG ((DEBUG_INFO, "MeasureSeparatorEvent - %r\n", Status));
+ return;
+}
+
+/**
+ Ready to Boot Event notification handler.
+
+ Sequence of OS boot events is measured in this event notification handler.
+
+ @param[in] Event Event whose notification function is being invoked
+ @param[in] Context Pointer to the notification function's context
+
+**/
+VOID
+EFIAPI
+OnReadyToBoot (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_STATUS Status;
+
+ PERF_START_EX (mImageHandle, "EventRec", "TdTcg2Dxe", 0, PERF_ID_CC_TCG2_DXE);
+ if (mBootAttempts == 0) {
+ //
+ // Measure handoff tables.
+ //
+ Status = MeasureHandoffTables ();
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "HOBs not Measured. Error!\n"));
+ }
+
+ //
+ // Measure BootOrder & Boot#### variables.
+ //
+ Status = MeasureAllBootVariables ();
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Boot Variables not Measured. Error!\n"));
+ }
+
+ //
+ // 1. This is the first boot attempt.
+ //
+ Status = TdMeasureAction (
+ MapPcrToMrIndex (4),
+ EFI_CALLING_EFI_APPLICATION
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a not Measured. Error!\n", EFI_CALLING_EFI_APPLICATION));
+ }
+
+ //
+ // 2. Draw a line between pre-boot env and entering post-boot env.
+ // PCR[7] (is RTMR[0]) is already done.
+ //
+ Status = MeasureSeparatorEvent (1);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Separator Event not Measured. Error!\n"));
+ }
+
+ //
+ // 3. Measure GPT. It would be done in SAP driver.
+ //
+
+ //
+ // 4. Measure PE/COFF OS loader. It would be done in SAP driver.
+ //
+
+ //
+ // 5. Read & Measure variable. BootOrder already measured.
+ //
+ } else {
+ //
+ // 6. Not first attempt, meaning a return from last attempt
+ //
+ Status = TdMeasureAction (
+ MapPcrToMrIndex (4),
+ EFI_RETURNING_FROM_EFI_APPLICATION
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a not Measured. Error!\n", EFI_RETURNING_FROM_EFI_APPLICATION));
+ }
+
+ //
+ // 7. Next boot attempt, measure "Calling EFI Application from Boot Option" again
+ // TCG PC Client PFP spec Section 2.4.4.5 Step 4
+ //
+ Status = TdMeasureAction (
+ MapPcrToMrIndex (4),
+ EFI_CALLING_EFI_APPLICATION
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a not Measured. Error!\n", EFI_CALLING_EFI_APPLICATION));
+ }
+ }
+
+ DEBUG ((DEBUG_INFO, "TdTcg2Dxe Measure Data when ReadyToBoot\n"));
+ //
+ // Increase boot attempt counter.
+ //
+ mBootAttempts++;
+ PERF_END_EX (mImageHandle, "EventRec", "Tcg2Dxe", 0, PERF_ID_CC_TCG2_DXE + 1);
+}
+
+/**
+ Exit Boot Services Event notification handler.
+
+ Measure invocation and success of ExitBootServices.
+
+ @param[in] Event Event whose notification function is being invoked
+ @param[in] Context Pointer to the notification function's context
+
+**/
+VOID
+EFIAPI
+OnExitBootServices (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Measure invocation of ExitBootServices,
+ //
+ Status = TdMeasureAction (
+ MapPcrToMrIndex (5),
+ EFI_EXIT_BOOT_SERVICES_INVOCATION
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a not Measured. Error!\n", EFI_EXIT_BOOT_SERVICES_INVOCATION));
+ }
+
+ //
+ // Measure success of ExitBootServices
+ //
+ Status = TdMeasureAction (
+ MapPcrToMrIndex (5),
+ EFI_EXIT_BOOT_SERVICES_SUCCEEDED
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a not Measured. Error!\n", EFI_EXIT_BOOT_SERVICES_SUCCEEDED));
+ }
+}
+
+/**
+ Exit Boot Services Failed Event notification handler.
+
+ Measure Failure of ExitBootServices.
+
+ @param[in] Event Event whose notification function is being invoked
+ @param[in] Context Pointer to the notification function's context
+
+**/
+VOID
+EFIAPI
+OnExitBootServicesFailed (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Measure Failure of ExitBootServices,
+ //
+ Status = TdMeasureAction (
+ MapPcrToMrIndex (5),
+ EFI_EXIT_BOOT_SERVICES_FAILED
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a not Measured. Error!\n", EFI_EXIT_BOOT_SERVICES_FAILED));
+ }
+}
+
+EFI_STATUS
+SyncCcEvent (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_PEI_HOB_POINTERS GuidHob;
+ VOID *CcEvent;
+ VOID *DigestListBin;
+ UINT32 DigestListBinSize;
+ UINT8 *Event;
+ UINT32 EventSize;
+ EFI_CC_EVENT_LOG_FORMAT LogFormat;
+
+ DEBUG ((DEBUG_INFO, "Sync Cc event from SEC\n"));
+
+ Status = EFI_SUCCESS;
+ LogFormat = EFI_CC_EVENT_LOG_FORMAT_TCG_2;
+ GuidHob.Guid = GetFirstGuidHob (&gCcEventEntryHobGuid);
+
+ while (!EFI_ERROR (Status) && GuidHob.Guid != NULL) {
+ CcEvent = AllocateCopyPool (GET_GUID_HOB_DATA_SIZE (GuidHob.Guid), GET_GUID_HOB_DATA (GuidHob.Guid));
+ if (CcEvent == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ GuidHob.Guid = GET_NEXT_HOB (GuidHob);
+ GuidHob.Guid = GetNextGuidHob (&gCcEventEntryHobGuid, GuidHob.Guid);
+
+ DigestListBin = (UINT8 *)CcEvent + sizeof (UINT32) + sizeof (TCG_EVENTTYPE);
+ DigestListBinSize = GetDigestListBinSize (DigestListBin);
+
+ //
+ // Event size.
+ //
+ EventSize = *(UINT32 *)((UINT8 *)DigestListBin + DigestListBinSize);
+ Event = (UINT8 *)DigestListBin + DigestListBinSize + sizeof (UINT32);
+
+ //
+ // Log the event
+ //
+ Status = TdxDxeLogEvent (
+ LogFormat,
+ CcEvent,
+ sizeof (UINT32) + sizeof (TCG_EVENTTYPE) + DigestListBinSize + sizeof (UINT32),
+ Event,
+ EventSize
+ );
+
+ DumpCcEvent ((CC_EVENT *)CcEvent);
+ FreePool (CcEvent);
+ }
+
+ return Status;
+}
+
+/**
+ Install TDVF ACPI Table when ACPI Table Protocol is available.
+
+ @param[in] Event Event whose notification function is being invoked
+ @param[in] Context Pointer to the notification function's context
+**/
+VOID
+EFIAPI
+InstallAcpiTable (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ UINTN TableKey;
+ EFI_STATUS Status;
+ EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
+ UINT64 OemTableId;
+
+ Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **)&AcpiTable);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "TD: AcpiTableProtocol is not installed. %r\n", Status));
+ return;
+ }
+
+ mTdxEventlogAcpiTemplate.Laml = (UINT64)PcdGet32 (PcdCcEventlogAcpiTableLaml);
+ mTdxEventlogAcpiTemplate.Lasa = PcdGet64 (PcdCcEventlogAcpiTableLasa);
+ CopyMem (mTdxEventlogAcpiTemplate.Header.OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (mTdxEventlogAcpiTemplate.Header.OemId));
+ OemTableId = PcdGet64 (PcdAcpiDefaultOemTableId);
+ CopyMem (&mTdxEventlogAcpiTemplate.Header.OemTableId, &OemTableId, sizeof (UINT64));
+ mTdxEventlogAcpiTemplate.Header.OemRevision = PcdGet32 (PcdAcpiDefaultOemRevision);
+ mTdxEventlogAcpiTemplate.Header.CreatorId = PcdGet32 (PcdAcpiDefaultCreatorId);
+ mTdxEventlogAcpiTemplate.Header.CreatorRevision = PcdGet32 (PcdAcpiDefaultCreatorRevision);
+
+ //
+ // Construct ACPI Table
+ Status = AcpiTable->InstallAcpiTable (
+ AcpiTable,
+ &mTdxEventlogAcpiTemplate,
+ mTdxEventlogAcpiTemplate.Header.Length,
+ &TableKey
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ DEBUG ((DEBUG_INFO, "TDVF Eventlog ACPI Table is installed.\n"));
+}
+
+/**
+ The function install TdTcg2 protocol.
+
+ @retval EFI_SUCCESS TdTcg2 protocol is installed.
+ @retval other Some error occurs.
+**/
+EFI_STATUS
+InstallCcMeasurementProtocol (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE Handle;
+
+ Handle = NULL;
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEfiCcMeasurementProtocolGuid,
+ &mTdProtocol,
+ NULL
+ );
+ DEBUG ((DEBUG_INFO, "CcProtocol: Install %r\n", Status));
+ return Status;
+}
+
+/**
+ The driver's entry point. It publishes EFI Tcg2 Protocol.
+
+ @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 other Some error occurs when executing this entry point.
+**/
+EFI_STATUS
+EFIAPI
+DriverEntry (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_EVENT Event;
+ VOID *Registration;
+
+ if (!TdIsEnabled ()) {
+ return EFI_UNSUPPORTED;
+ }
+
+ mImageHandle = ImageHandle;
+
+ //
+ // Fill information
+ //
+ // ASSERT (TD_EVENT_LOG_AREA_COUNT_MAX == sizeof(mTEventInfo)/sizeof(mTcg2EventInfo[0]));
+
+ mTdxDxeData.BsCap.Size = sizeof (EFI_CC_BOOT_SERVICE_CAPABILITY);
+ mTdxDxeData.BsCap.ProtocolVersion.Major = 1;
+ mTdxDxeData.BsCap.ProtocolVersion.Minor = 1;
+ mTdxDxeData.BsCap.StructureVersion.Major = 1;
+ mTdxDxeData.BsCap.StructureVersion.Minor = 1;
+
+ //
+ // Get supported PCR and current Active PCRs
+ // For TD gueset HA384 is supported.
+ //
+ mTdxDxeData.BsCap.HashAlgorithmBitmap = HASH_ALG_SHA384;
+
+ // TD guest only supports EFI_TCG2_EVENT_LOG_FORMAT_TCG_2
+ mTdxDxeData.BsCap.SupportedEventLogs = EFI_CC_EVENT_LOG_FORMAT_TCG_2;
+
+ //
+ // Setup the log area and copy event log from hob list to it
+ //
+ Status = SetupCcEventLog ();
+ ASSERT_EFI_ERROR (Status);
+
+ if (!EFI_ERROR (Status)) {
+ Status = SyncCcEvent ();
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ //
+ // Measure handoff tables, Boot#### variables etc.
+ //
+ Status = EfiCreateEventReadyToBootEx (
+ TPL_CALLBACK,
+ OnReadyToBoot,
+ NULL,
+ &Event
+ );
+
+ Status = gBS->CreateEventEx (
+ EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ OnExitBootServices,
+ NULL,
+ &gEfiEventExitBootServicesGuid,
+ &Event
+ );
+
+ //
+ // Measure Exit Boot Service failed
+ //
+ Status = gBS->CreateEventEx (
+ EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ OnExitBootServicesFailed,
+ NULL,
+ &gEventExitBootServicesFailedGuid,
+ &Event
+ );
+
+ //
+ // Create event callback, because we need access variable on SecureBootPolicyVariable
+ // We should use VariableWriteArch instead of VariableArch, because Variable driver
+ // may update SecureBoot value based on last setting.
+ //
+ EfiCreateProtocolNotifyEvent (&gEfiVariableWriteArchProtocolGuid, TPL_CALLBACK, MeasureSecureBootPolicy, NULL, &Registration);
+
+ //
+ // Install CcMeasurementProtocol
+ //
+ Status = InstallCcMeasurementProtocol ();
+ DEBUG ((DEBUG_INFO, "InstallCcMeasurementProtocol - %r\n", Status));
+
+ if (Status == EFI_SUCCESS) {
+ //
+ // Create event callback to install CC EventLog ACPI Table
+ EfiCreateProtocolNotifyEvent (&gEfiAcpiTableProtocolGuid, TPL_CALLBACK, InstallAcpiTable, NULL, &Registration);
+ }
+
+ return Status;
+}
diff --git a/OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.inf b/OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.inf
new file mode 100644
index 000000000000..5efe7ef479f1
--- /dev/null
+++ b/OvmfPkg/IntelTdx/TdTcg2Dxe/TdTcg2Dxe.inf
@@ -0,0 +1,101 @@
+## @file
+#
+# Produces EFI_CC_MEASUREMENT_PROTOCOL and measure boot environment
+#
+#
+# Copyright (c) 2020 - 2022, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = TdTcg2Dxe
+ FILE_GUID = F062221E-C607-44C2-B0B4-C3886331D351
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = DriverEntry
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = X64
+#
+
+[Sources]
+ TdTcg2Dxe.c
+ MeasureBootPeCoff.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ SecurityPkg/SecurityPkg.dec
+ CryptoPkg/CryptoPkg.dec
+ OvmfPkg/OvmfPkg.dec
+
+[LibraryClasses]
+ MemoryAllocationLib
+ BaseLib
+ UefiBootServicesTableLib
+ HobLib
+ UefiDriverEntryPoint
+ UefiRuntimeServicesTableLib
+ BaseMemoryLib
+ DebugLib
+ PrintLib
+ UefiLib
+ HashLib
+ PerformanceLib
+ ReportStatusCodeLib
+ PeCoffLib
+ TpmMeasurementLib
+ TdxLib
+
+[Guids]
+ ## SOMETIMES_CONSUMES ## Variable:L"SecureBoot"
+ ## SOMETIMES_CONSUMES ## Variable:L"PK"
+ ## SOMETIMES_CONSUMES ## Variable:L"KEK"
+ ## SOMETIMES_CONSUMES ## Variable:L"BootXXXX"
+ gEfiGlobalVariableGuid
+
+ ## SOMETIMES_CONSUMES ## Variable:L"db"
+ ## SOMETIMES_CONSUMES ## Variable:L"dbx"
+ gEfiImageSecurityDatabaseGuid
+
+ # gTcgEventEntryHobGuid ## SOMETIMES_CONSUMES ## HOB
+ gEfiEventExitBootServicesGuid ## CONSUMES ## Event
+ gEventExitBootServicesFailedGuid ## SOMETIMES_CONSUMES ## Event
+
+ gCcEventEntryHobGuid ## SOMETIMES_CONSUMES ## HOB
+ gTcg800155PlatformIdEventHobGuid ## SOMETIMES_CONSUMES ## HOB
+ gEfiCcFinalEventsTableGuid ## PRODUCES
+
+[Protocols]
+ gEfiCcMeasurementProtocolGuid ## PRODUCES
+ gEfiMpServiceProtocolGuid ## SOMETIMES_CONSUMES
+ gEfiVariableWriteArchProtocolGuid ## NOTIFY
+ gEfiResetNotificationProtocolGuid ## CONSUMES
+ gEfiAcpiTableProtocolGuid ## NOTIFY
+
+[Pcd]
+ gEfiSecurityPkgTokenSpaceGuid.PcdTpmPlatformClass ## SOMETIMES_CONSUMES
+ gEfiSecurityPkgTokenSpaceGuid.PcdFirmwareDebuggerInitialized ## SOMETIMES_CONSUMES
+ gEfiSecurityPkgTokenSpaceGuid.PcdStatusCodeSubClassTpmDevice ## SOMETIMES_CONSUMES
+ gEfiSecurityPkgTokenSpaceGuid.PcdTcg2HashAlgorithmBitmap ## CONSUMES
+ gEfiSecurityPkgTokenSpaceGuid.PcdTcg2NumberOfPCRBanks ## CONSUMES
+ gEfiSecurityPkgTokenSpaceGuid.PcdTcgLogAreaMinLen ## CONSUMES
+ gEfiSecurityPkgTokenSpaceGuid.PcdTcg2FinalLogAreaLen ## CONSUMES
+ gUefiOvmfPkgTokenSpaceGuid.PcdCcEventlogAcpiTableLaml ## PRODUCES
+ gUefiOvmfPkgTokenSpaceGuid.PcdCcEventlogAcpiTableLasa ## PRODUCES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultOemId ## CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultOemTableId ## CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultOemRevision ## CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultCreatorId ## CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultCreatorRevision ## CONSUMES
+
+[Depex]
+ # According to PcdTpm2AcpiTableRev definition in SecurityPkg.dec
+ # This PCD should be configured at DynamicHii or DynamicHiiEx.
+ # So, this PCD read operation depends on GetVariable service.
+ # Add VariableArch protocol dependency to make sure PCD read works.
+ gEfiVariableArchProtocolGuid AND gEfiAcpiTableProtocolGuid
--
2.29.2.windows.2
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