+/** @file\r
+ This module implements Tcg2 Protocol.\r
+ \r
+Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials \r
+are licensed and made available under the terms and conditions of the BSD License \r
+which accompanies this distribution. The full text of the license may be found at \r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include <PiDxe.h>\r
+#include <IndustryStandard/Acpi.h>\r
+#include <IndustryStandard/PeImage.h>\r
+#include <IndustryStandard/SmBios.h>\r
+#include <IndustryStandard/TcpaAcpi.h>\r
+\r
+#include <Guid/GlobalVariable.h>\r
+#include <Guid/SmBios.h>\r
+#include <Guid/HobList.h>\r
+#include <Guid/TcgEventHob.h>\r
+#include <Guid/EventGroup.h>\r
+#include <Guid/EventExitBootServiceFailed.h>\r
+#include <Guid/ImageAuthentication.h>\r
+#include <Guid/TpmInstance.h>\r
+\r
+#include <Protocol/DevicePath.h>\r
+#include <Protocol/MpService.h>\r
+#include <Protocol/VariableWrite.h>\r
+#include <Protocol/Tcg2Protocol.h>\r
+#include <Protocol/TrEEProtocol.h>\r
+\r
+#include <Library/DebugLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/UefiRuntimeServicesTableLib.h>\r
+#include <Library/UefiDriverEntryPoint.h>\r
+#include <Library/HobLib.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/BaseLib.h>\r
+#include <Library/MemoryAllocationLib.h>\r
+#include <Library/PrintLib.h>\r
+#include <Library/Tpm2CommandLib.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/UefiLib.h>\r
+#include <Library/Tpm2DeviceLib.h>\r
+#include <Library/HashLib.h>\r
+#include <Library/PerformanceLib.h>\r
+#include <Library/ReportStatusCodeLib.h>\r
+#include <Library/Tcg2PhysicalPresenceLib.h>\r
+\r
+#define PERF_ID_TCG2_DXE 0x3120\r
+\r
+typedef struct {\r
+ CHAR16 *VariableName;\r
+ EFI_GUID *VendorGuid;\r
+} VARIABLE_TYPE;\r
+\r
+#define EFI_TCG_LOG_AREA_SIZE 0x10000\r
+#define EFI_TCG_FINAL_LOG_AREA_SIZE 0x1000\r
+\r
+#define TCG2_DEFAULT_MAX_COMMAND_SIZE 0x1000\r
+#define TCG2_DEFAULT_MAX_RESPONSE_SIZE 0x1000\r
+\r
+typedef struct {\r
+ EFI_GUID *EventGuid;\r
+ EFI_TCG2_EVENT_LOG_FORMAT LogFormat;\r
+} TCG2_EVENT_INFO_STRUCT;\r
+\r
+TCG2_EVENT_INFO_STRUCT mTcg2EventInfo[] = {\r
+ {&gTcgEventEntryHobGuid, EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2},\r
+ {&gTcgEvent2EntryHobGuid, EFI_TCG2_EVENT_LOG_FORMAT_TCG_2},\r
+};\r
+\r
+#define TCG_EVENT_LOG_AREA_COUNT_MAX 2\r
+\r
+typedef struct {\r
+ EFI_TCG2_EVENT_LOG_FORMAT EventLogFormat;\r
+ EFI_PHYSICAL_ADDRESS Lasa;\r
+ UINT64 Laml;\r
+ UINTN EventLogSize;\r
+ UINT8 *LastEvent;\r
+ BOOLEAN EventLogStarted;\r
+ BOOLEAN EventLogTruncated;\r
+} TCG_EVENT_LOG_AREA_STRUCT;\r
+\r
+typedef struct _TCG_DXE_DATA {\r
+ EFI_TCG2_BOOT_SERVICE_CAPABILITY BsCap;\r
+ TCG_EVENT_LOG_AREA_STRUCT EventLogAreaStruct[TCG_EVENT_LOG_AREA_COUNT_MAX];\r
+ BOOLEAN GetEventLogCalled[TCG_EVENT_LOG_AREA_COUNT_MAX];\r
+ TCG_EVENT_LOG_AREA_STRUCT FinalEventLogAreaStruct[TCG_EVENT_LOG_AREA_COUNT_MAX];\r
+ EFI_TCG2_FINAL_EVENTS_TABLE *FinalEventsTable[TCG_EVENT_LOG_AREA_COUNT_MAX];\r
+} TCG_DXE_DATA;\r
+\r
+TCG_DXE_DATA mTcgDxeData = {\r
+ {\r
+ sizeof (EFI_TCG2_BOOT_SERVICE_CAPABILITY), // Size\r
+ { 1, 1 }, // StructureVersion\r
+ { 1, 1 }, // ProtocolVersion\r
+ EFI_TCG2_BOOT_HASH_ALG_SHA1, // HashAlgorithmBitmap\r
+ EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2, // SupportedEventLogs\r
+ TRUE, // TPMPresentFlag\r
+ TCG2_DEFAULT_MAX_COMMAND_SIZE, // MaxCommandSize\r
+ TCG2_DEFAULT_MAX_RESPONSE_SIZE, // MaxResponseSize\r
+ 0, // ManufacturerID\r
+ 0, // NumberOfPCRBanks\r
+ 0, // ActivePcrBanks\r
+ },\r
+};\r
+\r
+UINTN mBootAttempts = 0;\r
+CHAR16 mBootVarName[] = L"BootOrder";\r
+\r
+VARIABLE_TYPE mVariableType[] = {\r
+ {EFI_SECURE_BOOT_MODE_NAME, &gEfiGlobalVariableGuid},\r
+ {EFI_PLATFORM_KEY_NAME, &gEfiGlobalVariableGuid},\r
+ {EFI_KEY_EXCHANGE_KEY_NAME, &gEfiGlobalVariableGuid},\r
+ {EFI_IMAGE_SECURITY_DATABASE, &gEfiImageSecurityDatabaseGuid},\r
+ {EFI_IMAGE_SECURITY_DATABASE1, &gEfiImageSecurityDatabaseGuid},\r
+};\r
+\r
+EFI_HANDLE mImageHandle;\r
+\r
+/**\r
+ Measure PE image into TPM log based on the authenticode image hashing in\r
+ PE/COFF Specification 8.0 Appendix A.\r
+\r
+ Caution: This function may receive untrusted input.\r
+ PE/COFF image is external input, so this function will validate its data structure\r
+ within this image buffer before use.\r
+\r
+ @param[in] PCRIndex TPM PCR index\r
+ @param[in] ImageAddress Start address of image buffer.\r
+ @param[in] ImageSize Image size\r
+ @param[out] DigestList Digeest list of this image.\r
+\r
+ @retval EFI_SUCCESS Successfully measure image.\r
+ @retval EFI_OUT_OF_RESOURCES No enough resource to measure image.\r
+ @retval other error value\r
+**/\r
+EFI_STATUS\r
+MeasurePeImageAndExtend (\r
+ IN UINT32 PCRIndex,\r
+ IN EFI_PHYSICAL_ADDRESS ImageAddress,\r
+ IN UINTN ImageSize,\r
+ OUT TPML_DIGEST_VALUES *DigestList\r
+ );\r
+\r
+/**\r
+\r
+ This function dump raw data.\r
+\r
+ @param Data raw data\r
+ @param Size raw data size\r
+\r
+**/\r
+VOID\r
+InternalDumpData (\r
+ IN UINT8 *Data,\r
+ IN UINTN Size\r
+ )\r
+{\r
+ UINTN Index;\r
+ for (Index = 0; Index < Size; Index++) {\r
+ DEBUG ((EFI_D_INFO, "%02x", (UINTN)Data[Index]));\r
+ }\r
+}\r
+\r
+/**\r
+\r
+ This function dump raw data with colume format.\r
+\r
+ @param Data raw data\r
+ @param Size raw data size\r
+\r
+**/\r
+VOID\r
+InternalDumpHex (\r
+ IN UINT8 *Data,\r
+ IN UINTN Size\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINTN Count;\r
+ UINTN Left;\r
+\r
+#define COLUME_SIZE (16 * 2)\r
+\r
+ Count = Size / COLUME_SIZE;\r
+ Left = Size % COLUME_SIZE;\r
+ for (Index = 0; Index < Count; Index++) {\r
+ DEBUG ((EFI_D_INFO, "%04x: ", Index * COLUME_SIZE));\r
+ InternalDumpData (Data + Index * COLUME_SIZE, COLUME_SIZE);\r
+ DEBUG ((EFI_D_INFO, "\n"));\r
+ }\r
+\r
+ if (Left != 0) {\r
+ DEBUG ((EFI_D_INFO, "%04x: ", Index * COLUME_SIZE));\r
+ InternalDumpData (Data + Index * COLUME_SIZE, Left);\r
+ DEBUG ((EFI_D_INFO, "\n"));\r
+ }\r
+}\r
+\r
+/**\r
+ Check if buffer is all zero.\r
+\r
+ @param[in] Buffer Buffer to be checked.\r
+ @param[in] BufferSize Size of buffer to be checked.\r
+\r
+ @retval TRUE Buffer is all zero.\r
+ @retval FALSE Buffer is not all zero.\r
+**/\r
+BOOLEAN\r
+IsZeroBuffer (\r
+ IN VOID *Buffer,\r
+ IN UINTN BufferSize\r
+ )\r
+{\r
+ UINT8 *BufferData;\r
+ UINTN Index;\r
+\r
+ BufferData = Buffer;\r
+ for (Index = 0; Index < BufferSize; Index++) {\r
+ if (BufferData[Index] != 0) {\r
+ return FALSE;\r
+ }\r
+ }\r
+ return TRUE;\r
+}\r
+\r
+/**\r
+ Get All processors EFI_CPU_LOCATION in system. LocationBuf is allocated inside the function\r
+ Caller is responsible to free LocationBuf.\r
+\r
+ @param[out] LocationBuf Returns Processor Location Buffer.\r
+ @param[out] Num Returns processor number.\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_UNSUPPORTED MpService protocol not found.\r
+\r
+**/\r
+EFI_STATUS\r
+GetProcessorsCpuLocation (\r
+ OUT EFI_CPU_PHYSICAL_LOCATION **LocationBuf,\r
+ OUT UINTN *Num\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_MP_SERVICES_PROTOCOL *MpProtocol;\r
+ UINTN ProcessorNum;\r
+ UINTN EnabledProcessorNum;\r
+ EFI_PROCESSOR_INFORMATION ProcessorInfo;\r
+ EFI_CPU_PHYSICAL_LOCATION *ProcessorLocBuf;\r
+ UINTN Index;\r
+\r
+ Status = gBS->LocateProtocol (&gEfiMpServiceProtocolGuid, NULL, (VOID **) &MpProtocol);\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // MP protocol is not installed\r
+ //\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ Status = MpProtocol->GetNumberOfProcessors(\r
+ MpProtocol,\r
+ &ProcessorNum,\r
+ &EnabledProcessorNum\r
+ );\r
+ if (EFI_ERROR(Status)){\r
+ return Status;\r
+ }\r
+\r
+ Status = gBS->AllocatePool(\r
+ EfiBootServicesData,\r
+ sizeof(EFI_CPU_PHYSICAL_LOCATION) * ProcessorNum,\r
+ (VOID **) &ProcessorLocBuf\r
+ );\r
+ if (EFI_ERROR(Status)){\r
+ return Status;\r
+ }\r
+\r
+ //\r
+ // Get each processor Location info\r
+ //\r
+ for (Index = 0; Index < ProcessorNum; Index++) {\r
+ Status = MpProtocol->GetProcessorInfo(\r
+ MpProtocol,\r
+ Index,\r
+ &ProcessorInfo\r
+ );\r
+ if (EFI_ERROR(Status)){\r
+ FreePool(ProcessorLocBuf);\r
+ return Status;\r
+ }\r
+\r
+ //\r
+ // Get all Processor Location info & measure\r
+ //\r
+ CopyMem(\r
+ &ProcessorLocBuf[Index],\r
+ &ProcessorInfo.Location,\r
+ sizeof(EFI_CPU_PHYSICAL_LOCATION)\r
+ );\r
+ }\r
+\r
+ *LocationBuf = ProcessorLocBuf;\r
+ *Num = ProcessorNum;\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ The EFI_TCG2_PROTOCOL GetCapability function call provides protocol\r
+ capability information and state information.\r
+\r
+ @param[in] This Indicates the calling context\r
+ @param[in, out] ProtocolCapability The caller allocates memory for a EFI_TCG2_BOOT_SERVICE_CAPABILITY\r
+ structure and sets the size field to the size of the structure allocated.\r
+ The callee fills in the fields with the EFI protocol capability information\r
+ and the current EFI TCG2 state information up to the number of fields which\r
+ fit within the size of the structure passed in.\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.\r
+ The ProtocolCapability variable will not be populated. \r
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.\r
+ The ProtocolCapability variable will not be populated.\r
+ @retval EFI_BUFFER_TOO_SMALL The ProtocolCapability variable is too small to hold the full response.\r
+ It will be partially populated (required Size field will be set). \r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tcg2GetCapability (\r
+ IN EFI_TCG2_PROTOCOL *This,\r
+ IN OUT EFI_TCG2_BOOT_SERVICE_CAPABILITY *ProtocolCapability\r
+ )\r
+{\r
+ DEBUG ((EFI_D_INFO, "Tcg2GetCapability ...\n"));\r
+\r
+ if ((This == NULL) || (ProtocolCapability == NULL)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ \r
+ DEBUG ((EFI_D_INFO, "Size - 0x%x\n", ProtocolCapability->Size));\r
+ DEBUG ((EFI_D_INFO, " 1.1 - 0x%x, 1.0 - 0x%x\n", sizeof(EFI_TCG2_BOOT_SERVICE_CAPABILITY), sizeof(TREE_BOOT_SERVICE_CAPABILITY_1_0)));\r
+\r
+ if (ProtocolCapability->Size < mTcgDxeData.BsCap.Size) {\r
+ //\r
+ // Handle the case that firmware support 1.1 but OS only support 1.0.\r
+ //\r
+ if ((mTcgDxeData.BsCap.ProtocolVersion.Major > 0x01) || \r
+ ((mTcgDxeData.BsCap.ProtocolVersion.Major == 0x01) && ((mTcgDxeData.BsCap.ProtocolVersion.Minor > 0x00)))) {\r
+ if (ProtocolCapability->Size >= sizeof(TREE_BOOT_SERVICE_CAPABILITY_1_0)) {\r
+ CopyMem (ProtocolCapability, &mTcgDxeData.BsCap, sizeof(TREE_BOOT_SERVICE_CAPABILITY_1_0));\r
+ ProtocolCapability->Size = sizeof(TREE_BOOT_SERVICE_CAPABILITY_1_0);\r
+ ProtocolCapability->StructureVersion.Major = 1;\r
+ ProtocolCapability->StructureVersion.Minor = 0;\r
+ ProtocolCapability->ProtocolVersion.Major = 1;\r
+ ProtocolCapability->ProtocolVersion.Minor = 0;\r
+ DEBUG ((EFI_D_ERROR, "TreeGetCapability (Compatible) - %r\n", EFI_SUCCESS));\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+ ProtocolCapability->Size = mTcgDxeData.BsCap.Size;\r
+ return EFI_BUFFER_TOO_SMALL;\r
+ }\r
+\r
+ CopyMem (ProtocolCapability, &mTcgDxeData.BsCap, mTcgDxeData.BsCap.Size);\r
+ DEBUG ((EFI_D_INFO, "Tcg2GetCapability - %r\n", EFI_SUCCESS));\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ This function dump PCR event.\r
+\r
+ @param[in] EventHdr TCG PCR event structure.\r
+**/\r
+VOID\r
+DumpEvent (\r
+ IN TCG_PCR_EVENT_HDR *EventHdr\r
+ )\r
+{\r
+ UINTN Index;\r
+\r
+ DEBUG ((EFI_D_INFO, " Event:\n"));\r
+ DEBUG ((EFI_D_INFO, " PCRIndex - %d\n", EventHdr->PCRIndex));\r
+ DEBUG ((EFI_D_INFO, " EventType - 0x%08x\n", EventHdr->EventType));\r
+ DEBUG ((EFI_D_INFO, " Digest - "));\r
+ for (Index = 0; Index < sizeof(TCG_DIGEST); Index++) {\r
+ DEBUG ((EFI_D_INFO, "%02x ", EventHdr->Digest.digest[Index]));\r
+ }\r
+ DEBUG ((EFI_D_INFO, "\n"));\r
+ DEBUG ((EFI_D_INFO, " EventSize - 0x%08x\n", EventHdr->EventSize));\r
+ InternalDumpHex ((UINT8 *)(EventHdr + 1), EventHdr->EventSize);\r
+}\r
+\r
+/**\r
+ This function dump TCG_EfiSpecIDEventStruct.\r
+\r
+ @param[in] TcgEfiSpecIdEventStruct A pointer to TCG_EfiSpecIDEventStruct.\r
+**/\r
+VOID\r
+DumpTcgEfiSpecIdEventStruct (\r
+ IN TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct\r
+ )\r
+{\r
+ TCG_EfiSpecIdEventAlgorithmSize *digestSize;\r
+ UINTN Index;\r
+ UINT8 *vendorInfoSize;\r
+ UINT8 *vendorInfo;\r
+ UINT32 numberOfAlgorithms;\r
+\r
+ DEBUG ((EFI_D_INFO, " TCG_EfiSpecIDEventStruct:\n"));\r
+ DEBUG ((EFI_D_INFO, " signature - '"));\r
+ for (Index = 0; Index < sizeof(TcgEfiSpecIdEventStruct->signature); Index++) {\r
+ DEBUG ((EFI_D_INFO, "%c", TcgEfiSpecIdEventStruct->signature[Index]));\r
+ }\r
+ DEBUG ((EFI_D_INFO, "'\n"));\r
+ DEBUG ((EFI_D_INFO, " platformClass - 0x%08x\n", TcgEfiSpecIdEventStruct->platformClass));\r
+ DEBUG ((EFI_D_INFO, " specVersion - %d.%d%d\n", TcgEfiSpecIdEventStruct->specVersionMajor, TcgEfiSpecIdEventStruct->specVersionMinor, TcgEfiSpecIdEventStruct->specErrata));\r
+ DEBUG ((EFI_D_INFO, " uintnSize - 0x%02x\n", TcgEfiSpecIdEventStruct->uintnSize));\r
+\r
+ CopyMem (&numberOfAlgorithms, TcgEfiSpecIdEventStruct + 1, sizeof(numberOfAlgorithms));\r
+ DEBUG ((EFI_D_INFO, " numberOfAlgorithms - 0x%08x\n", numberOfAlgorithms));\r
+\r
+ digestSize = (TCG_EfiSpecIdEventAlgorithmSize *)((UINT8 *)TcgEfiSpecIdEventStruct + sizeof(*TcgEfiSpecIdEventStruct) + sizeof(numberOfAlgorithms));\r
+ for (Index = 0; Index < numberOfAlgorithms; Index++) {\r
+ DEBUG ((EFI_D_INFO, " digest(%d)\n", Index));\r
+ DEBUG ((EFI_D_INFO, " algorithmId - 0x%04x\n", digestSize[Index].algorithmId));\r
+ DEBUG ((EFI_D_INFO, " digestSize - 0x%04x\n", digestSize[Index].digestSize));\r
+ }\r
+ vendorInfoSize = (UINT8 *)&digestSize[numberOfAlgorithms];\r
+ DEBUG ((EFI_D_INFO, " vendorInfoSize - 0x%02x\n", *vendorInfoSize));\r
+ vendorInfo = vendorInfoSize + 1;\r
+ DEBUG ((EFI_D_INFO, " vendorInfo - "));\r
+ for (Index = 0; Index < *vendorInfoSize; Index++) {\r
+ DEBUG ((EFI_D_INFO, "%02x ", vendorInfo[Index]));\r
+ }\r
+ DEBUG ((EFI_D_INFO, "\n"));\r
+}\r
+\r
+/**\r
+ This function get size of TCG_EfiSpecIDEventStruct.\r
+\r
+ @param[in] TcgEfiSpecIdEventStruct A pointer to TCG_EfiSpecIDEventStruct.\r
+**/\r
+UINTN\r
+GetTcgEfiSpecIdEventStructSize (\r
+ IN TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct\r
+ )\r
+{\r
+ TCG_EfiSpecIdEventAlgorithmSize *digestSize;\r
+ UINT8 *vendorInfoSize;\r
+ UINT32 numberOfAlgorithms;\r
+\r
+ CopyMem (&numberOfAlgorithms, TcgEfiSpecIdEventStruct + 1, sizeof(numberOfAlgorithms));\r
+\r
+ digestSize = (TCG_EfiSpecIdEventAlgorithmSize *)((UINT8 *)TcgEfiSpecIdEventStruct + sizeof(*TcgEfiSpecIdEventStruct) + sizeof(numberOfAlgorithms));\r
+ vendorInfoSize = (UINT8 *)&digestSize[numberOfAlgorithms];\r
+ return sizeof(TCG_EfiSpecIDEventStruct) + sizeof(UINT32) + (numberOfAlgorithms * sizeof(TCG_EfiSpecIdEventAlgorithmSize)) + sizeof(UINT8) + (*vendorInfoSize);\r
+}\r
+\r
+/**\r
+ This function dump PCR event 2.\r
+\r
+ @param[in] TcgPcrEvent2 TCG PCR event 2 structure.\r
+**/\r
+VOID\r
+DumpEvent2 (\r
+ IN TCG_PCR_EVENT2 *TcgPcrEvent2\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINT32 DigestIndex;\r
+ UINT32 DigestCount;\r
+ TPMI_ALG_HASH HashAlgo;\r
+ UINT32 DigestSize;\r
+ UINT8 *DigestBuffer;\r
+ UINT32 EventSize;\r
+ UINT8 *EventBuffer;\r
+\r
+ DEBUG ((EFI_D_INFO, " Event:\n"));\r
+ DEBUG ((EFI_D_INFO, " PCRIndex - %d\n", TcgPcrEvent2->PCRIndex));\r
+ DEBUG ((EFI_D_INFO, " EventType - 0x%08x\n", TcgPcrEvent2->EventType));\r
+\r
+ DEBUG ((EFI_D_INFO, " DigestCount: 0x%08x\n", TcgPcrEvent2->Digest.count));\r
+\r
+ DigestCount = TcgPcrEvent2->Digest.count;\r
+ HashAlgo = TcgPcrEvent2->Digest.digests[0].hashAlg;\r
+ DigestBuffer = (UINT8 *)&TcgPcrEvent2->Digest.digests[0].digest;\r
+ for (DigestIndex = 0; DigestIndex < DigestCount; DigestIndex++) {\r
+ DEBUG ((EFI_D_INFO, " HashAlgo : 0x%04x\n", HashAlgo));\r
+ DEBUG ((EFI_D_INFO, " Digest(%d): ", DigestIndex));\r
+ DigestSize = GetHashSizeFromAlgo (HashAlgo);\r
+ for (Index = 0; Index < DigestSize; Index++) {\r
+ DEBUG ((EFI_D_INFO, "%02x ", DigestBuffer[Index]));\r
+ }\r
+ DEBUG ((EFI_D_INFO, "\n"));\r
+ //\r
+ // Prepare next\r
+ //\r
+ CopyMem (&HashAlgo, DigestBuffer + DigestSize, sizeof(TPMI_ALG_HASH));\r
+ DigestBuffer = DigestBuffer + DigestSize + sizeof(TPMI_ALG_HASH);\r
+ }\r
+ DEBUG ((EFI_D_INFO, "\n"));\r
+ DigestBuffer = DigestBuffer - sizeof(TPMI_ALG_HASH);\r
+\r
+ CopyMem (&EventSize, DigestBuffer, sizeof(TcgPcrEvent2->EventSize));\r
+ DEBUG ((EFI_D_INFO, " EventSize - 0x%08x\n", EventSize));\r
+ EventBuffer = DigestBuffer + sizeof(TcgPcrEvent2->EventSize);\r
+ InternalDumpHex (EventBuffer, EventSize);\r
+}\r
+\r
+/**\r
+ This function returns size of TCG PCR event 2.\r
+ \r
+ @param[in] TcgPcrEvent2 TCG PCR event 2 structure.\r
+\r
+ @return size of TCG PCR event 2.\r
+**/\r
+UINTN\r
+GetPcrEvent2Size (\r
+ IN TCG_PCR_EVENT2 *TcgPcrEvent2\r
+ )\r
+{\r
+ UINT32 DigestIndex;\r
+ UINT32 DigestCount;\r
+ TPMI_ALG_HASH HashAlgo;\r
+ UINT32 DigestSize;\r
+ UINT8 *DigestBuffer;\r
+ UINT32 EventSize;\r
+ UINT8 *EventBuffer;\r
+\r
+ DigestCount = TcgPcrEvent2->Digest.count;\r
+ HashAlgo = TcgPcrEvent2->Digest.digests[0].hashAlg;\r
+ DigestBuffer = (UINT8 *)&TcgPcrEvent2->Digest.digests[0].digest;\r
+ for (DigestIndex = 0; DigestIndex < DigestCount; DigestIndex++) {\r
+ DigestSize = GetHashSizeFromAlgo (HashAlgo);\r
+ //\r
+ // Prepare next\r
+ //\r
+ CopyMem (&HashAlgo, DigestBuffer + DigestSize, sizeof(TPMI_ALG_HASH));\r
+ DigestBuffer = DigestBuffer + DigestSize + sizeof(TPMI_ALG_HASH);\r
+ }\r
+ DigestBuffer = DigestBuffer - sizeof(TPMI_ALG_HASH);\r
+\r
+ CopyMem (&EventSize, DigestBuffer, sizeof(TcgPcrEvent2->EventSize));\r
+ EventBuffer = DigestBuffer + sizeof(TcgPcrEvent2->EventSize);\r
+\r
+ return (UINTN)EventBuffer + EventSize - (UINTN)TcgPcrEvent2;\r
+}\r
+\r
+/**\r
+ This function dump event log.\r
+\r
+ @param[in] EventLogFormat The type of the event log for which the information is requested.\r
+ @param[in] EventLogLocation A pointer to the memory address of the event log.\r
+ @param[in] EventLogLastEntry If the Event Log contains more than one entry, this is a pointer to the\r
+ address of the start of the last entry in the event log in memory.\r
+ @param[in] FinalEventsTable A pointer to the memory address of the final event table.\r
+**/\r
+VOID\r
+DumpEventLog (\r
+ IN EFI_TCG2_EVENT_LOG_FORMAT EventLogFormat,\r
+ IN EFI_PHYSICAL_ADDRESS EventLogLocation,\r
+ IN EFI_PHYSICAL_ADDRESS EventLogLastEntry,\r
+ IN EFI_TCG2_FINAL_EVENTS_TABLE *FinalEventsTable\r
+ )\r
+{\r
+ TCG_PCR_EVENT_HDR *EventHdr;\r
+ TCG_PCR_EVENT2 *TcgPcrEvent2;\r
+ TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct;\r
+ UINTN NumberOfEvents;\r
+\r
+ DEBUG ((EFI_D_INFO, "EventLogFormat: (0x%x)\n", EventLogFormat));\r
+ \r
+ switch (EventLogFormat) {\r
+ case EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2:\r
+ EventHdr = (TCG_PCR_EVENT_HDR *)(UINTN)EventLogLocation;\r
+ while ((UINTN)EventHdr <= EventLogLastEntry) {\r
+ DumpEvent (EventHdr);\r
+ EventHdr = (TCG_PCR_EVENT_HDR *)((UINTN)EventHdr + sizeof(TCG_PCR_EVENT_HDR) + EventHdr->EventSize);\r
+ }\r
+ if (FinalEventsTable == NULL) {\r
+ DEBUG ((EFI_D_INFO, "FinalEventsTable: NOT FOUND\n"));\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "FinalEventsTable: (0x%x)\n", FinalEventsTable));\r
+ DEBUG ((EFI_D_INFO, " Version: (0x%x)\n", FinalEventsTable->Version));\r
+ DEBUG ((EFI_D_INFO, " NumberOfEvents: (0x%x)\n", FinalEventsTable->NumberOfEvents));\r
+\r
+ EventHdr = (TCG_PCR_EVENT_HDR *)(UINTN)(FinalEventsTable + 1);\r
+ for (NumberOfEvents = 0; NumberOfEvents < FinalEventsTable->NumberOfEvents; NumberOfEvents++) {\r
+ DumpEvent (EventHdr);\r
+ EventHdr = (TCG_PCR_EVENT_HDR *)((UINTN)EventHdr + sizeof(TCG_PCR_EVENT_HDR) + EventHdr->EventSize);\r
+ }\r
+ }\r
+ break;\r
+ case EFI_TCG2_EVENT_LOG_FORMAT_TCG_2:\r
+ //\r
+ // Dump first event \r
+ //\r
+ EventHdr = (TCG_PCR_EVENT_HDR *)(UINTN)EventLogLocation;\r
+ DumpEvent (EventHdr);\r
+\r
+ TcgEfiSpecIdEventStruct = (TCG_EfiSpecIDEventStruct *)(EventHdr + 1);\r
+ DumpTcgEfiSpecIdEventStruct (TcgEfiSpecIdEventStruct);\r
+\r
+ TcgPcrEvent2 = (TCG_PCR_EVENT2 *)((UINTN)TcgEfiSpecIdEventStruct + GetTcgEfiSpecIdEventStructSize (TcgEfiSpecIdEventStruct));\r
+ while ((UINTN)TcgPcrEvent2 <= EventLogLastEntry) {\r
+ DumpEvent2 (TcgPcrEvent2);\r
+ TcgPcrEvent2 = (TCG_PCR_EVENT2 *)((UINTN)TcgPcrEvent2 + GetPcrEvent2Size (TcgPcrEvent2));\r
+ }\r
+\r
+ if (FinalEventsTable == NULL) {\r
+ DEBUG ((EFI_D_INFO, "FinalEventsTable: NOT FOUND\n"));\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "FinalEventsTable: (0x%x)\n", FinalEventsTable));\r
+ DEBUG ((EFI_D_INFO, " Version: (0x%x)\n", FinalEventsTable->Version));\r
+ DEBUG ((EFI_D_INFO, " NumberOfEvents: (0x%x)\n", FinalEventsTable->NumberOfEvents));\r
+\r
+ TcgPcrEvent2 = (TCG_PCR_EVENT2 *)(UINTN)(FinalEventsTable + 1);\r
+ for (NumberOfEvents = 0; NumberOfEvents < FinalEventsTable->NumberOfEvents; NumberOfEvents++) {\r
+ DumpEvent2 (TcgPcrEvent2);\r
+ TcgPcrEvent2 = (TCG_PCR_EVENT2 *)((UINTN)TcgPcrEvent2 + GetPcrEvent2Size (TcgPcrEvent2));\r
+ }\r
+ }\r
+ break;\r
+ }\r
+\r
+ return ;\r
+}\r
+\r
+/**\r
+ The EFI_TCG2_PROTOCOL Get Event Log function call allows a caller to\r
+ retrieve the address of a given event log and its last entry. \r
+\r
+ @param[in] This Indicates the calling context\r
+ @param[in] EventLogFormat The type of the event log for which the information is requested.\r
+ @param[out] EventLogLocation A pointer to the memory address of the event log.\r
+ @param[out] EventLogLastEntry If the Event Log contains more than one entry, this is a pointer to the\r
+ address of the start of the last entry in the event log in memory.\r
+ @param[out] EventLogTruncated If the Event Log is missing at least one entry because an event would\r
+ have exceeded the area allocated for events, this value is set to TRUE.\r
+ Otherwise, the value will be FALSE and the Event Log will be complete.\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect\r
+ (e.g. asking for an event log whose format is not supported).\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tcg2GetEventLog (\r
+ IN EFI_TCG2_PROTOCOL *This,\r
+ IN EFI_TCG2_EVENT_LOG_FORMAT EventLogFormat,\r
+ OUT EFI_PHYSICAL_ADDRESS *EventLogLocation,\r
+ OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry,\r
+ OUT BOOLEAN *EventLogTruncated\r
+ )\r
+{\r
+ UINTN Index;\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2GetEventLog ... (0x%x)\n", EventLogFormat));\r
+\r
+ if (This == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ for (Index = 0; Index < sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0]); Index++) {\r
+ if (EventLogFormat == mTcg2EventInfo[Index].LogFormat) {\r
+ break;\r
+ }\r
+ }\r
+\r
+ if (Index == sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0])) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if ((mTcg2EventInfo[Index].LogFormat & mTcgDxeData.BsCap.SupportedEventLogs) == 0) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (!mTcgDxeData.BsCap.TPMPresentFlag) {\r
+ if (EventLogLocation != NULL) {\r
+ *EventLogLocation = 0;\r
+ }\r
+ if (EventLogLastEntry != NULL) {\r
+ *EventLogLastEntry = 0;\r
+ }\r
+ if (EventLogTruncated != NULL) {\r
+ *EventLogTruncated = FALSE;\r
+ }\r
+ return EFI_SUCCESS;\r
+ }\r
+\r
+ if (EventLogLocation != NULL) {\r
+ *EventLogLocation = mTcgDxeData.EventLogAreaStruct[Index].Lasa;\r
+ DEBUG ((EFI_D_INFO, "Tcg2GetEventLog (EventLogLocation - %x)\n", *EventLogLocation));\r
+ }\r
+\r
+ if (EventLogLastEntry != NULL) {\r
+ if (!mTcgDxeData.EventLogAreaStruct[Index].EventLogStarted) {\r
+ *EventLogLastEntry = (EFI_PHYSICAL_ADDRESS)(UINTN)0;\r
+ } else {\r
+ *EventLogLastEntry = (EFI_PHYSICAL_ADDRESS)(UINTN)mTcgDxeData.EventLogAreaStruct[Index].LastEvent;\r
+ }\r
+ DEBUG ((EFI_D_INFO, "Tcg2GetEventLog (EventLogLastEntry - %x)\n", *EventLogLastEntry));\r
+ }\r
+\r
+ if (EventLogTruncated != NULL) {\r
+ *EventLogTruncated = mTcgDxeData.EventLogAreaStruct[Index].EventLogTruncated;\r
+ DEBUG ((EFI_D_INFO, "Tcg2GetEventLog (EventLogTruncated - %x)\n", *EventLogTruncated));\r
+ }\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2GetEventLog - %r\n", EFI_SUCCESS));\r
+\r
+ // Dump Event Log for debug purpose\r
+ if ((EventLogLocation != NULL) && (EventLogLastEntry != NULL)) {\r
+ DumpEventLog (EventLogFormat, *EventLogLocation, *EventLogLastEntry, mTcgDxeData.FinalEventsTable[Index]);\r
+ }\r
+\r
+ //\r
+ // All events generated after the invocation of EFI_TCG2_GET_EVENT_LOG SHALL be stored\r
+ // in an instance of an EFI_CONFIGURATION_TABLE named by the VendorGuid of EFI_TCG2_FINAL_EVENTS_TABLE_GUID.\r
+ //\r
+ mTcgDxeData.GetEventLogCalled[Index] = TRUE;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Add a new entry to the Event Log.\r
+\r
+ @param[in, out] EventLogPtr Pointer to the Event Log data. \r
+ @param[in, out] LogSize Size of the Event Log. \r
+ @param[in] MaxSize Maximum size of the Event Log.\r
+ @param[in] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR/TCG_PCR_EVENT_EX data structure. \r
+ @param[in] NewEventHdrSize New event header size.\r
+ @param[in] NewEventData Pointer to the new event data. \r
+ @param[in] NewEventSize New event data size.\r
+ \r
+ @retval EFI_SUCCESS The new event log entry was added.\r
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r
+\r
+**/\r
+EFI_STATUS\r
+TcgCommLogEvent (\r
+ IN OUT UINT8 **EventLogPtr,\r
+ IN OUT UINTN *LogSize,\r
+ IN UINTN MaxSize,\r
+ IN VOID *NewEventHdr,\r
+ IN UINT32 NewEventHdrSize,\r
+ IN UINT8 *NewEventData,\r
+ IN UINT32 NewEventSize\r
+ )\r
+{\r
+ UINTN NewLogSize;\r
+\r
+ if (NewEventSize > MAX_ADDRESS - NewEventHdrSize) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ NewLogSize = NewEventHdrSize + NewEventSize;\r
+\r
+ if (NewLogSize > MAX_ADDRESS - *LogSize) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ if (NewLogSize + *LogSize > MaxSize) {\r
+ DEBUG ((EFI_D_INFO, " MaxSize - 0x%x\n", MaxSize));\r
+ DEBUG ((EFI_D_INFO, " NewLogSize - 0x%x\n", NewLogSize));\r
+ DEBUG ((EFI_D_INFO, " LogSize - 0x%x\n", *LogSize));\r
+ DEBUG ((EFI_D_INFO, "TcgCommLogEvent - %r\n", EFI_OUT_OF_RESOURCES));\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ *EventLogPtr += *LogSize;\r
+ *LogSize += NewLogSize;\r
+ CopyMem (*EventLogPtr, NewEventHdr, NewEventHdrSize);\r
+ CopyMem (\r
+ *EventLogPtr + NewEventHdrSize,\r
+ NewEventData,\r
+ NewEventSize\r
+ );\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Add a new entry to the Event Log.\r
+\r
+ @param[in] EventLogFormat The type of the event log for which the information is requested.\r
+ @param[in] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR/TCG_PCR_EVENT_EX data structure. \r
+ @param[in] NewEventHdrSize New event header size.\r
+ @param[in] NewEventData Pointer to the new event data. \r
+ @param[in] NewEventSize New event data size.\r
+\r
+ @retval EFI_SUCCESS The new event log entry was added.\r
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r
+\r
+**/\r
+EFI_STATUS\r
+TcgDxeLogEvent (\r
+ IN EFI_TCG2_EVENT_LOG_FORMAT EventLogFormat,\r
+ IN VOID *NewEventHdr,\r
+ IN UINT32 NewEventHdrSize,\r
+ IN UINT8 *NewEventData,\r
+ IN UINT32 NewEventSize\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINTN Index;\r
+ TCG_EVENT_LOG_AREA_STRUCT *EventLogAreaStruct;\r
+ \r
+ for (Index = 0; Index < sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0]); Index++) {\r
+ if (EventLogFormat == mTcg2EventInfo[Index].LogFormat) {\r
+ break;\r
+ }\r
+ }\r
+\r
+ if (Index == sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0])) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (!mTcgDxeData.GetEventLogCalled[Index]) {\r
+ EventLogAreaStruct = &mTcgDxeData.EventLogAreaStruct[Index];\r
+ } else {\r
+ EventLogAreaStruct = &mTcgDxeData.FinalEventLogAreaStruct[Index];\r
+ }\r
+\r
+ if (EventLogAreaStruct->EventLogTruncated) {\r
+ return EFI_VOLUME_FULL;\r
+ }\r
+\r
+ EventLogAreaStruct->LastEvent = (UINT8*)(UINTN)EventLogAreaStruct->Lasa;\r
+ Status = TcgCommLogEvent (\r
+ &EventLogAreaStruct->LastEvent,\r
+ &EventLogAreaStruct->EventLogSize,\r
+ (UINTN)EventLogAreaStruct->Laml,\r
+ NewEventHdr,\r
+ NewEventHdrSize,\r
+ NewEventData,\r
+ NewEventSize\r
+ );\r
+ \r
+ if (Status == EFI_DEVICE_ERROR) {\r
+ return EFI_DEVICE_ERROR;\r
+ } else if (Status == EFI_OUT_OF_RESOURCES) {\r
+ EventLogAreaStruct->EventLogTruncated = TRUE;\r
+ return EFI_VOLUME_FULL;\r
+ } else if (Status == EFI_SUCCESS) {\r
+ EventLogAreaStruct->EventLogStarted = TRUE;\r
+ if (mTcgDxeData.GetEventLogCalled[Index]) {\r
+ (mTcgDxeData.FinalEventsTable[Index])->NumberOfEvents ++;\r
+ }\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ This function get digest from digest list.\r
+\r
+ @param HashAlg digest algorithm\r
+ @param DigestList digest list\r
+ @param Digest digest\r
+\r
+ @retval EFI_SUCCESS Sha1Digest is found and returned.\r
+ @retval EFI_NOT_FOUND Sha1Digest is not found.\r
+**/\r
+EFI_STATUS\r
+Tpm2GetDigestFromDigestList (\r
+ IN TPMI_ALG_HASH HashAlg,\r
+ IN TPML_DIGEST_VALUES *DigestList,\r
+ IN VOID *Digest\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINT16 DigestSize;\r
+\r
+ DigestSize = GetHashSizeFromAlgo (HashAlg);\r
+ for (Index = 0; Index < DigestList->count; Index++) {\r
+ if (DigestList->digests[Index].hashAlg == HashAlg) {\r
+ CopyMem (\r
+ Digest,\r
+ &DigestList->digests[Index].digest,\r
+ DigestSize\r
+ );\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+\r
+ return EFI_NOT_FOUND;\r
+}\r
+\r
+/**\r
+ Get TPML_DIGEST_VALUES data size.\r
+\r
+ @param[in] DigestList TPML_DIGEST_VALUES data.\r
+\r
+ @return TPML_DIGEST_VALUES data size.\r
+**/\r
+UINT32\r
+GetDigestListSize (\r
+ IN TPML_DIGEST_VALUES *DigestList\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINT16 DigestSize;\r
+ UINT32 TotalSize;\r
+\r
+ TotalSize = sizeof(DigestList->count);\r
+ for (Index = 0; Index < DigestList->count; Index++) {\r
+ DigestSize = GetHashSizeFromAlgo (DigestList->digests[Index].hashAlg);\r
+ TotalSize += sizeof(DigestList->digests[Index].hashAlg) + DigestSize;\r
+ }\r
+\r
+ return TotalSize;\r
+}\r
+\r
+/**\r
+ Get TPML_DIGEST_VALUES compact binary buffer size.\r
+\r
+ @param[in] DigestListBin TPML_DIGEST_VALUES compact binary buffer.\r
+\r
+ @return TPML_DIGEST_VALUES compact binary buffer size.\r
+**/\r
+UINT32\r
+GetDigestListBinSize (\r
+ IN VOID *DigestListBin\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINT16 DigestSize;\r
+ UINT32 TotalSize;\r
+ UINT32 Count;\r
+ TPMI_ALG_HASH HashAlg;\r
+\r
+ Count = ReadUnaligned32 (DigestListBin);\r
+ TotalSize = sizeof(Count);\r
+ DigestListBin = (UINT8 *)DigestListBin + sizeof(Count);\r
+ for (Index = 0; Index < Count; Index++) {\r
+ HashAlg = ReadUnaligned16 (DigestListBin);\r
+ TotalSize += sizeof(HashAlg);\r
+ DigestListBin = (UINT8 *)DigestListBin + sizeof(HashAlg);\r
+\r
+ DigestSize = GetHashSizeFromAlgo (HashAlg);\r
+ TotalSize += DigestSize;\r
+ DigestListBin = (UINT8 *)DigestListBin + DigestSize;\r
+ }\r
+\r
+ return TotalSize;\r
+}\r
+\r
+/**\r
+ Return if hash alg is supported in TPM PCR bank.\r
+\r
+ @param HashAlg Hash algorithm to be checked.\r
+\r
+ @retval TRUE Hash algorithm is supported.\r
+ @retval FALSE Hash algorithm is not supported.\r
+**/\r
+BOOLEAN\r
+IsHashAlgSupportedInPcrBank (\r
+ IN TPMI_ALG_HASH HashAlg\r
+ )\r
+{\r
+ switch (HashAlg) {\r
+ case TPM_ALG_SHA1:\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA1) != 0) {\r
+ return TRUE;\r
+ }\r
+ break;\r
+ case TPM_ALG_SHA256:\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA256) != 0) {\r
+ return TRUE;\r
+ }\r
+ break;\r
+ case TPM_ALG_SHA384:\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA384) != 0) {\r
+ return TRUE;\r
+ }\r
+ break;\r
+ case TPM_ALG_SHA512:\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA512) != 0) {\r
+ return TRUE;\r
+ }\r
+ break;\r
+ case TPM_ALG_SM3_256:\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SM3_256) != 0) {\r
+ return TRUE;\r
+ }\r
+ break;\r
+ }\r
+\r
+ return FALSE;\r
+}\r
+\r
+/**\r
+ Copy TPML_DIGEST_VALUES into a buffer\r
+\r
+ @param[in,out] Buffer Buffer to hold TPML_DIGEST_VALUES.\r
+ @param[in] DigestList TPML_DIGEST_VALUES to be copied.\r
+\r
+ @return The end of buffer to hold TPML_DIGEST_VALUES.\r
+**/\r
+VOID *\r
+CopyDigestListToBuffer (\r
+ IN OUT VOID *Buffer,\r
+ IN TPML_DIGEST_VALUES *DigestList\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINT16 DigestSize;\r
+\r
+ CopyMem (Buffer, &DigestList->count, sizeof(DigestList->count));\r
+ Buffer = (UINT8 *)Buffer + sizeof(DigestList->count);\r
+ for (Index = 0; Index < DigestList->count; Index++) {\r
+ if (!IsHashAlgSupportedInPcrBank (DigestList->digests[Index].hashAlg)) {\r
+ DEBUG ((EFI_D_ERROR, "WARNING: TPM2 Event log has HashAlg unsupported by PCR bank (0x%x)\n", DigestList->digests[Index].hashAlg));\r
+ continue;\r
+ }\r
+ CopyMem (Buffer, &DigestList->digests[Index].hashAlg, sizeof(DigestList->digests[Index].hashAlg));\r
+ Buffer = (UINT8 *)Buffer + sizeof(DigestList->digests[Index].hashAlg);\r
+ DigestSize = GetHashSizeFromAlgo (DigestList->digests[Index].hashAlg);\r
+ CopyMem (Buffer, &DigestList->digests[Index].digest, DigestSize);\r
+ Buffer = (UINT8 *)Buffer + DigestSize;\r
+ }\r
+\r
+ return Buffer;\r
+}\r
+\r
+/**\r
+ Add a new entry to the Event Log.\r
+\r
+ @param[in] DigestList A list of digest.\r
+ @param[in,out] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR data structure.\r
+ @param[in] NewEventData Pointer to the new event data.\r
+\r
+ @retval EFI_SUCCESS The new event log entry was added.\r
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r
+**/\r
+EFI_STATUS\r
+TcgDxeLogHashEvent (\r
+ IN TPML_DIGEST_VALUES *DigestList,\r
+ IN OUT TCG_PCR_EVENT_HDR *NewEventHdr,\r
+ IN UINT8 *NewEventData\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_TPL OldTpl;\r
+ UINTN Index;\r
+ EFI_STATUS RetStatus;\r
+ TCG_PCR_EVENT2 TcgPcrEvent2;\r
+ UINT8 *DigestBuffer;\r
+\r
+ DEBUG ((EFI_D_INFO, "SupportedEventLogs - 0x%08x\n", mTcgDxeData.BsCap.SupportedEventLogs));\r
+\r
+ RetStatus = EFI_SUCCESS;\r
+ for (Index = 0; Index < sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0]); Index++) {\r
+ if ((mTcgDxeData.BsCap.SupportedEventLogs & mTcg2EventInfo[Index].LogFormat) != 0) {\r
+ DEBUG ((EFI_D_INFO, " LogFormat - 0x%08x\n", mTcg2EventInfo[Index].LogFormat));\r
+ switch (mTcg2EventInfo[Index].LogFormat) {\r
+ case EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2:\r
+ Status = Tpm2GetDigestFromDigestList (TPM_ALG_SHA1, DigestList, &NewEventHdr->Digest);\r
+ if (!EFI_ERROR (Status)) {\r
+ //\r
+ // Enter critical region\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r
+ Status = TcgDxeLogEvent (\r
+ mTcg2EventInfo[Index].LogFormat,\r
+ NewEventHdr,\r
+ sizeof(TCG_PCR_EVENT_HDR),\r
+ NewEventData,\r
+ NewEventHdr->EventSize\r
+ );\r
+ if (Status != EFI_SUCCESS) {\r
+ RetStatus = Status;\r
+ }\r
+ gBS->RestoreTPL (OldTpl);\r
+ //\r
+ // Exit critical region\r
+ //\r
+ }\r
+ break;\r
+ case EFI_TCG2_EVENT_LOG_FORMAT_TCG_2:\r
+ ZeroMem (&TcgPcrEvent2, sizeof(TcgPcrEvent2));\r
+ TcgPcrEvent2.PCRIndex = NewEventHdr->PCRIndex;\r
+ TcgPcrEvent2.EventType = NewEventHdr->EventType;\r
+ DigestBuffer = (UINT8 *)&TcgPcrEvent2.Digest;\r
+ DigestBuffer = CopyDigestListToBuffer (DigestBuffer, DigestList);\r
+ CopyMem (DigestBuffer, &NewEventHdr->EventSize, sizeof(NewEventHdr->EventSize));\r
+ DigestBuffer = DigestBuffer + sizeof(NewEventHdr->EventSize);\r
+\r
+ //\r
+ // Enter critical region\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r
+ Status = TcgDxeLogEvent (\r
+ mTcg2EventInfo[Index].LogFormat,\r
+ &TcgPcrEvent2,\r
+ sizeof(TcgPcrEvent2.PCRIndex) + sizeof(TcgPcrEvent2.EventType) + GetDigestListSize (DigestList) + sizeof(TcgPcrEvent2.EventSize),\r
+ NewEventData,\r
+ NewEventHdr->EventSize\r
+ );\r
+ if (Status != EFI_SUCCESS) {\r
+ RetStatus = Status;\r
+ }\r
+ gBS->RestoreTPL (OldTpl);\r
+ //\r
+ // Exit critical region\r
+ //\r
+ break;\r
+ }\r
+ }\r
+ }\r
+\r
+ return RetStatus;\r
+}\r
+\r
+/**\r
+ Do a hash operation on a data buffer, extend a specific TPM PCR with the hash result,\r
+ and add an entry to the Event Log.\r
+\r
+ @param[in] Flags Bitmap providing additional information.\r
+ @param[in] HashData Physical address of the start of the data buffer \r
+ to be hashed, extended, and logged.\r
+ @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData\r
+ @param[in, out] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR data structure. \r
+ @param[in] NewEventData Pointer to the new event data. \r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+TcgDxeHashLogExtendEvent (\r
+ IN UINT64 Flags,\r
+ IN UINT8 *HashData,\r
+ IN UINT64 HashDataLen,\r
+ IN OUT TCG_PCR_EVENT_HDR *NewEventHdr,\r
+ IN UINT8 *NewEventData\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ TPML_DIGEST_VALUES DigestList;\r
+\r
+ if (!mTcgDxeData.BsCap.TPMPresentFlag) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ Status = HashAndExtend (\r
+ NewEventHdr->PCRIndex,\r
+ HashData,\r
+ (UINTN)HashDataLen,\r
+ &DigestList\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ if ((Flags & EFI_TCG2_EXTEND_ONLY) == 0) {\r
+ Status = TcgDxeLogHashEvent (&DigestList, NewEventHdr, NewEventData);\r
+ }\r
+ }\r
+\r
+ if (Status == EFI_DEVICE_ERROR) {\r
+ DEBUG ((EFI_D_ERROR, "TcgDxeHashLogExtendEvent - %r. Disable TPM.\n", Status));\r
+ mTcgDxeData.BsCap.TPMPresentFlag = FALSE;\r
+ REPORT_STATUS_CODE (\r
+ EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
+ (PcdGet32 (PcdStatusCodeSubClassTpmDevice) | EFI_P_EC_INTERFACE_ERROR)\r
+ );\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ The EFI_TCG2_PROTOCOL HashLogExtendEvent function call provides callers with\r
+ an opportunity to extend and optionally log events without requiring\r
+ knowledge of actual TPM commands. \r
+ The extend operation will occur even if this function cannot create an event\r
+ log entry (e.g. due to the event log being full). \r
+\r
+ @param[in] This Indicates the calling context\r
+ @param[in] Flags Bitmap providing additional information.\r
+ @param[in] DataToHash Physical address of the start of the data buffer to be hashed. \r
+ @param[in] DataToHashLen The length in bytes of the buffer referenced by DataToHash.\r
+ @param[in] Event Pointer to data buffer containing information about the event.\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.\r
+ @retval EFI_VOLUME_FULL The extend operation occurred, but the event could not be written to one or more event logs.\r
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.\r
+ @retval EFI_UNSUPPORTED The PE/COFF image type is not supported.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tcg2HashLogExtendEvent (\r
+ IN EFI_TCG2_PROTOCOL *This,\r
+ IN UINT64 Flags,\r
+ IN EFI_PHYSICAL_ADDRESS DataToHash,\r
+ IN UINT64 DataToHashLen,\r
+ IN EFI_TCG2_EVENT *Event\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ TCG_PCR_EVENT_HDR NewEventHdr;\r
+ TPML_DIGEST_VALUES DigestList;\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2HashLogExtendEvent ...\n"));\r
+\r
+ if ((This == NULL) || (DataToHash == 0) || (Event == NULL)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (!mTcgDxeData.BsCap.TPMPresentFlag) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ if (Event->Size < Event->Header.HeaderSize + sizeof(UINT32)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (Event->Header.PCRIndex > MAX_PCR_INDEX) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ NewEventHdr.PCRIndex = Event->Header.PCRIndex;\r
+ NewEventHdr.EventType = Event->Header.EventType;\r
+ NewEventHdr.EventSize = Event->Size - sizeof(UINT32) - Event->Header.HeaderSize;\r
+ if ((Flags & PE_COFF_IMAGE) != 0) {\r
+ Status = MeasurePeImageAndExtend (\r
+ NewEventHdr.PCRIndex,\r
+ DataToHash,\r
+ (UINTN)DataToHashLen,\r
+ &DigestList\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ if ((Flags & EFI_TCG2_EXTEND_ONLY) == 0) {\r
+ Status = TcgDxeLogHashEvent (&DigestList, &NewEventHdr, Event->Event);\r
+ }\r
+ }\r
+ if (Status == EFI_DEVICE_ERROR) {\r
+ DEBUG ((EFI_D_ERROR, "MeasurePeImageAndExtend - %r. Disable TPM.\n", Status));\r
+ mTcgDxeData.BsCap.TPMPresentFlag = FALSE;\r
+ REPORT_STATUS_CODE (\r
+ EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
+ (PcdGet32 (PcdStatusCodeSubClassTpmDevice) | EFI_P_EC_INTERFACE_ERROR)\r
+ );\r
+ }\r
+ } else {\r
+ Status = TcgDxeHashLogExtendEvent (\r
+ Flags,\r
+ (UINT8 *) (UINTN) DataToHash,\r
+ DataToHashLen,\r
+ &NewEventHdr,\r
+ Event->Event\r
+ );\r
+ }\r
+ DEBUG ((EFI_D_INFO, "Tcg2HashLogExtendEvent - %r\n", Status));\r
+ return Status;\r
+}\r
+\r
+/**\r
+ This service enables the sending of commands to the TPM.\r
+\r
+ @param[in] This Indicates the calling context\r
+ @param[in] InputParameterBlockSize Size of the TPM input parameter block.\r
+ @param[in] InputParameterBlock Pointer to the TPM input parameter block.\r
+ @param[in] OutputParameterBlockSize Size of the TPM output parameter block.\r
+ @param[in] OutputParameterBlock Pointer to the TPM output parameter block.\r
+\r
+ @retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.\r
+ @retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.\r
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.\r
+ @retval EFI_BUFFER_TOO_SMALL The output parameter block is too small. \r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tcg2SubmitCommand (\r
+ IN EFI_TCG2_PROTOCOL *This,\r
+ IN UINT32 InputParameterBlockSize,\r
+ IN UINT8 *InputParameterBlock,\r
+ IN UINT32 OutputParameterBlockSize,\r
+ IN UINT8 *OutputParameterBlock\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2SubmitCommand ...\n"));\r
+\r
+ if ((This == NULL) ||\r
+ (InputParameterBlockSize == 0) || (InputParameterBlock == NULL) ||\r
+ (OutputParameterBlockSize == 0) || (OutputParameterBlock == NULL)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (!mTcgDxeData.BsCap.TPMPresentFlag) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ if (InputParameterBlockSize >= mTcgDxeData.BsCap.MaxCommandSize) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ if (OutputParameterBlockSize >= mTcgDxeData.BsCap.MaxResponseSize) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ Status = Tpm2SubmitCommand (\r
+ InputParameterBlockSize,\r
+ InputParameterBlock,\r
+ &OutputParameterBlockSize,\r
+ OutputParameterBlock\r
+ );\r
+ DEBUG ((EFI_D_INFO, "Tcg2SubmitCommand - %r\n", Status));\r
+ return Status;\r
+}\r
+\r
+/**\r
+ This service returns the currently active PCR banks.\r
+\r
+ @param[in] This Indicates the calling context\r
+ @param[out] ActivePcrBanks Pointer to the variable receiving the bitmap of currently active PCR banks.\r
+\r
+ @retval EFI_SUCCESS The bitmap of active PCR banks was stored in the ActivePcrBanks parameter.\r
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect. \r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tcg2GetActivePCRBanks (\r
+ IN EFI_TCG2_PROTOCOL *This,\r
+ OUT UINT32 *ActivePcrBanks\r
+ )\r
+{\r
+ if (ActivePcrBanks == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ *ActivePcrBanks = mTcgDxeData.BsCap.ActivePcrBanks;\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ This service sets the currently active PCR banks.\r
+\r
+ @param[in] This Indicates the calling context\r
+ @param[in] ActivePcrBanks Bitmap of the requested active PCR banks. At least one bit SHALL be set.\r
+\r
+ @retval EFI_SUCCESS The bitmap in ActivePcrBank parameter is already active.\r
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tcg2SetActivePCRBanks (\r
+ IN EFI_TCG2_PROTOCOL *This,\r
+ IN UINT32 ActivePcrBanks\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINT32 ReturnCode;\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2SetActivePCRBanks ... (0x%x)\n", ActivePcrBanks));\r
+\r
+ if (ActivePcrBanks == 0) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ if ((ActivePcrBanks & (~mTcgDxeData.BsCap.HashAlgorithmBitmap)) != 0) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ if (ActivePcrBanks == mTcgDxeData.BsCap.ActivePcrBanks) {\r
+ //\r
+ // Need clear previous SET_PCR_BANKS setting\r
+ //\r
+ ReturnCode = Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (TCG2_PHYSICAL_PRESENCE_NO_ACTION, 0);\r
+ } else {\r
+ ReturnCode = Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS, ActivePcrBanks);\r
+ }\r
+\r
+ if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS) {\r
+ Status = EFI_SUCCESS;\r
+ } else if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ } else if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED) {\r
+ Status = EFI_UNSUPPORTED;\r
+ } else {\r
+ Status = EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2SetActivePCRBanks - %r\n", Status));\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ This service retrieves the result of a previous invocation of SetActivePcrBanks.\r
+\r
+ @param[in] This Indicates the calling context\r
+ @param[out] OperationPresent Non-zero value to indicate a SetActivePcrBank operation was invoked during the last boot.\r
+ @param[out] Response The response from the SetActivePcrBank request.\r
+\r
+ @retval EFI_SUCCESS The result value could be returned.\r
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tcg2GetResultOfSetActivePcrBanks (\r
+ IN EFI_TCG2_PROTOCOL *This,\r
+ OUT UINT32 *OperationPresent,\r
+ OUT UINT32 *Response\r
+ )\r
+{\r
+ UINT32 ReturnCode;\r
+\r
+ if ((OperationPresent == NULL) || (Response == NULL)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ \r
+ ReturnCode = Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (OperationPresent, Response);\r
+ if (ReturnCode == TCG_PP_RETURN_TPM_OPERATION_RESPONSE_SUCCESS) {\r
+ return EFI_SUCCESS;\r
+ } else {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+}\r
+\r
+EFI_TCG2_PROTOCOL mTcg2Protocol = {\r
+ Tcg2GetCapability,\r
+ Tcg2GetEventLog,\r
+ Tcg2HashLogExtendEvent,\r
+ Tcg2SubmitCommand,\r
+ Tcg2GetActivePCRBanks,\r
+ Tcg2SetActivePCRBanks,\r
+ Tcg2GetResultOfSetActivePcrBanks,\r
+};\r
+\r
+/**\r
+ Initialize the Event Log and log events passed from the PEI phase.\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Out of memory.\r
+\r
+**/\r
+EFI_STATUS\r
+SetupEventLog (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ VOID *TcgEvent;\r
+ EFI_PEI_HOB_POINTERS GuidHob;\r
+ EFI_PHYSICAL_ADDRESS Lasa;\r
+ UINTN Index;\r
+ UINT32 DigestListBinSize;\r
+ UINT32 EventSize;\r
+ TCG_EfiSpecIDEventStruct *TcgEfiSpecIdEventStruct;\r
+ UINT8 TempBuf[sizeof(TCG_EfiSpecIDEventStruct) + (HASH_COUNT * sizeof(TCG_EfiSpecIdEventAlgorithmSize)) + sizeof(UINT8)];\r
+ TCG_PCR_EVENT_HDR FirstPcrEvent;\r
+ TCG_EfiSpecIdEventAlgorithmSize *digestSize;\r
+ UINT8 *vendorInfoSize;\r
+ UINT32 numberOfAlgorithms;\r
+\r
+ DEBUG ((EFI_D_INFO, "SetupEventLog\n"));\r
+\r
+ //\r
+ // 1. Create Log Area\r
+ //\r
+ for (Index = 0; Index < sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0]); Index++) {\r
+ if ((mTcgDxeData.BsCap.SupportedEventLogs & mTcg2EventInfo[Index].LogFormat) != 0) {\r
+ mTcgDxeData.EventLogAreaStruct[Index].EventLogFormat = mTcg2EventInfo[Index].LogFormat;\r
+ Lasa = (EFI_PHYSICAL_ADDRESS) (SIZE_4GB - 1);\r
+ Status = gBS->AllocatePages (\r
+ AllocateMaxAddress,\r
+ EfiACPIMemoryNVS,\r
+ EFI_SIZE_TO_PAGES (EFI_TCG_LOG_AREA_SIZE),\r
+ &Lasa\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ mTcgDxeData.EventLogAreaStruct[Index].Lasa = Lasa;\r
+ mTcgDxeData.EventLogAreaStruct[Index].Laml = EFI_TCG_LOG_AREA_SIZE;\r
+ //\r
+ // To initialize them as 0xFF is recommended \r
+ // because the OS can know the last entry for that.\r
+ //\r
+ SetMem ((VOID *)(UINTN)Lasa, EFI_TCG_LOG_AREA_SIZE, 0xFF);\r
+ //\r
+ // Create first entry for Log Header Entry Data\r
+ //\r
+ if (mTcg2EventInfo[Index].LogFormat != EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2) {\r
+ //\r
+ // TcgEfiSpecIdEventStruct\r
+ //\r
+ TcgEfiSpecIdEventStruct = (TCG_EfiSpecIDEventStruct *)TempBuf;\r
+ CopyMem (TcgEfiSpecIdEventStruct->signature, TCG_EfiSpecIDEventStruct_SIGNATURE_03, sizeof(TcgEfiSpecIdEventStruct->signature));\r
+ TcgEfiSpecIdEventStruct->platformClass = PcdGet8 (PcdTpmPlatformClass);\r
+ TcgEfiSpecIdEventStruct->specVersionMajor = TCG_EfiSpecIDEventStruct_SPEC_VERSION_MAJOR_TPM2;\r
+ TcgEfiSpecIdEventStruct->specVersionMinor = TCG_EfiSpecIDEventStruct_SPEC_VERSION_MINOR_TPM2;\r
+ TcgEfiSpecIdEventStruct->specErrata = TCG_EfiSpecIDEventStruct_SPEC_ERRATA_TPM2;\r
+ TcgEfiSpecIdEventStruct->uintnSize = sizeof(UINTN)/sizeof(UINT32);\r
+ numberOfAlgorithms = 0;\r
+ digestSize = (TCG_EfiSpecIdEventAlgorithmSize *)((UINT8 *)TcgEfiSpecIdEventStruct + sizeof(*TcgEfiSpecIdEventStruct) + sizeof(numberOfAlgorithms));\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA1) != 0) {\r
+ digestSize[numberOfAlgorithms].algorithmId = TPM_ALG_SHA1;\r
+ digestSize[numberOfAlgorithms].digestSize = SHA1_DIGEST_SIZE;\r
+ numberOfAlgorithms++;\r
+ }\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA256) != 0) {\r
+ digestSize[numberOfAlgorithms].algorithmId = TPM_ALG_SHA256;\r
+ digestSize[numberOfAlgorithms].digestSize = SHA256_DIGEST_SIZE;\r
+ numberOfAlgorithms++;\r
+ }\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA384) != 0) {\r
+ digestSize[numberOfAlgorithms].algorithmId = TPM_ALG_SHA384;\r
+ digestSize[numberOfAlgorithms].digestSize = SHA384_DIGEST_SIZE;\r
+ numberOfAlgorithms++;\r
+ }\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA512) != 0) {\r
+ digestSize[numberOfAlgorithms].algorithmId = TPM_ALG_SHA512;\r
+ digestSize[numberOfAlgorithms].digestSize = SHA512_DIGEST_SIZE;\r
+ numberOfAlgorithms++;\r
+ }\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SM3_256) != 0) {\r
+ digestSize[numberOfAlgorithms].algorithmId = TPM_ALG_SM3_256;\r
+ digestSize[numberOfAlgorithms].digestSize = SM3_256_DIGEST_SIZE;\r
+ numberOfAlgorithms++;\r
+ }\r
+ CopyMem (TcgEfiSpecIdEventStruct + 1, &numberOfAlgorithms, sizeof(numberOfAlgorithms));\r
+ vendorInfoSize = (UINT8 *)&digestSize[numberOfAlgorithms];\r
+ *vendorInfoSize = 0;\r
+\r
+ //\r
+ // FirstPcrEvent\r
+ //\r
+ FirstPcrEvent.PCRIndex = 0;\r
+ FirstPcrEvent.EventType = EV_NO_ACTION;\r
+ ZeroMem (&FirstPcrEvent.Digest, sizeof(FirstPcrEvent.Digest));\r
+ FirstPcrEvent.EventSize = (UINT32)GetTcgEfiSpecIdEventStructSize (TcgEfiSpecIdEventStruct);\r
+\r
+ //\r
+ // Record\r
+ //\r
+ Status = TcgDxeLogEvent (\r
+ mTcg2EventInfo[Index].LogFormat,\r
+ &FirstPcrEvent,\r
+ sizeof(FirstPcrEvent),\r
+ (UINT8 *)TcgEfiSpecIdEventStruct,\r
+ FirstPcrEvent.EventSize\r
+ );\r
+ }\r
+ }\r
+ }\r
+\r
+ //\r
+ // 2. Create Final Log Area\r
+ //\r
+ for (Index = 0; Index < sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0]); Index++) {\r
+ if ((mTcgDxeData.BsCap.SupportedEventLogs & mTcg2EventInfo[Index].LogFormat) != 0) {\r
+ Lasa = (EFI_PHYSICAL_ADDRESS) (SIZE_4GB - 1);\r
+ Status = gBS->AllocatePages (\r
+ AllocateMaxAddress,\r
+ EfiACPIMemoryNVS,\r
+ EFI_SIZE_TO_PAGES (EFI_TCG_FINAL_LOG_AREA_SIZE),\r
+ &Lasa\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ SetMem ((VOID *)(UINTN)Lasa, EFI_TCG_FINAL_LOG_AREA_SIZE, 0xFF);\r
+\r
+ //\r
+ // Initialize\r
+ //\r
+ mTcgDxeData.FinalEventsTable[Index] = (VOID *)(UINTN)Lasa;\r
+ (mTcgDxeData.FinalEventsTable[Index])->Version = EFI_TCG2_FINAL_EVENTS_TABLE_VERSION;\r
+ (mTcgDxeData.FinalEventsTable[Index])->NumberOfEvents = 0;\r
+\r
+ mTcgDxeData.FinalEventLogAreaStruct[Index].EventLogFormat = mTcg2EventInfo[Index].LogFormat;\r
+ mTcgDxeData.FinalEventLogAreaStruct[Index].Lasa = Lasa + sizeof(EFI_TCG2_FINAL_EVENTS_TABLE);\r
+ mTcgDxeData.FinalEventLogAreaStruct[Index].Laml = EFI_TCG_FINAL_LOG_AREA_SIZE - sizeof(EFI_TCG2_FINAL_EVENTS_TABLE);\r
+ mTcgDxeData.FinalEventLogAreaStruct[Index].EventLogSize = 0;\r
+ mTcgDxeData.FinalEventLogAreaStruct[Index].LastEvent = (VOID *)(UINTN)mTcgDxeData.FinalEventLogAreaStruct[Index].Lasa;\r
+ mTcgDxeData.FinalEventLogAreaStruct[Index].EventLogStarted = FALSE;\r
+ mTcgDxeData.FinalEventLogAreaStruct[Index].EventLogTruncated = FALSE;\r
+\r
+ if (mTcg2EventInfo[Index].LogFormat == EFI_TCG2_EVENT_LOG_FORMAT_TCG_2) {\r
+ //\r
+ // Install to configuration table\r
+ //\r
+ Status = gBS->InstallConfigurationTable (&gEfiTcg2FinalEventsTableGuid, (VOID *)mTcgDxeData.FinalEventsTable[1]);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ }\r
+ }\r
+ }\r
+ \r
+ //\r
+ // 3. Sync data from PEI to DXE\r
+ //\r
+ Status = EFI_SUCCESS;\r
+ for (Index = 0; Index < sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0]); Index++) {\r
+ if ((mTcgDxeData.BsCap.SupportedEventLogs & mTcg2EventInfo[Index].LogFormat) != 0) {\r
+ GuidHob.Raw = GetHobList ();\r
+ Status = EFI_SUCCESS;\r
+ while (!EFI_ERROR (Status) && \r
+ (GuidHob.Raw = GetNextGuidHob (mTcg2EventInfo[Index].EventGuid, GuidHob.Raw)) != NULL) {\r
+ TcgEvent = GET_GUID_HOB_DATA (GuidHob.Guid);\r
+ GuidHob.Raw = GET_NEXT_HOB (GuidHob);\r
+ switch (mTcg2EventInfo[Index].LogFormat) {\r
+ case EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2:\r
+ Status = TcgDxeLogEvent (\r
+ mTcg2EventInfo[Index].LogFormat,\r
+ TcgEvent,\r
+ sizeof(TCG_PCR_EVENT_HDR),\r
+ ((TCG_PCR_EVENT*)TcgEvent)->Event,\r
+ ((TCG_PCR_EVENT_HDR*)TcgEvent)->EventSize\r
+ );\r
+ break;\r
+ case EFI_TCG2_EVENT_LOG_FORMAT_TCG_2:\r
+ DigestListBinSize = GetDigestListBinSize ((UINT8 *)TcgEvent + sizeof(TCG_PCRINDEX) + sizeof(TCG_EVENTTYPE));\r
+ CopyMem (&EventSize, (UINT8 *)TcgEvent + sizeof(TCG_PCRINDEX) + sizeof(TCG_EVENTTYPE) + DigestListBinSize, sizeof(UINT32));\r
+ Status = TcgDxeLogEvent (\r
+ mTcg2EventInfo[Index].LogFormat,\r
+ TcgEvent,\r
+ sizeof(TCG_PCRINDEX) + sizeof(TCG_EVENTTYPE) + DigestListBinSize + sizeof(UINT32),\r
+ (UINT8 *)TcgEvent + sizeof(TCG_PCRINDEX) + sizeof(TCG_EVENTTYPE) + DigestListBinSize + sizeof(UINT32),\r
+ EventSize\r
+ );\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Measure and log an action string, and extend the measurement result into PCR[5].\r
+\r
+ @param[in] String A specific string that indicates an Action event. \r
+ \r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+TcgMeasureAction (\r
+ IN CHAR8 *String\r
+ )\r
+{\r
+ TCG_PCR_EVENT_HDR TcgEvent;\r
+\r
+ TcgEvent.PCRIndex = 5;\r
+ TcgEvent.EventType = EV_EFI_ACTION;\r
+ TcgEvent.EventSize = (UINT32)AsciiStrLen (String);\r
+ return TcgDxeHashLogExtendEvent (\r
+ 0,\r
+ (UINT8*)String,\r
+ TcgEvent.EventSize,\r
+ &TcgEvent,\r
+ (UINT8 *) String\r
+ );\r
+}\r
+\r
+/**\r
+ Measure and log EFI handoff tables, and extend the measurement result into PCR[1].\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+MeasureHandoffTables (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ SMBIOS_TABLE_ENTRY_POINT *SmbiosTable;\r
+ TCG_PCR_EVENT_HDR TcgEvent;\r
+ EFI_HANDOFF_TABLE_POINTERS HandoffTables;\r
+ UINTN ProcessorNum;\r
+ EFI_CPU_PHYSICAL_LOCATION *ProcessorLocBuf;\r
+\r
+ ProcessorLocBuf = NULL;\r
+\r
+ //\r
+ // Measure SMBIOS with EV_EFI_HANDOFF_TABLES to PCR[1]\r
+ //\r
+ Status = EfiGetSystemConfigurationTable (\r
+ &gEfiSmbiosTableGuid,\r
+ (VOID **) &SmbiosTable\r
+ );\r
+\r
+ if (!EFI_ERROR (Status) && SmbiosTable != NULL) {\r
+ TcgEvent.PCRIndex = 1;\r
+ TcgEvent.EventType = EV_EFI_HANDOFF_TABLES;\r
+ TcgEvent.EventSize = sizeof (HandoffTables);\r
+\r
+ HandoffTables.NumberOfTables = 1;\r
+ HandoffTables.TableEntry[0].VendorGuid = gEfiSmbiosTableGuid;\r
+ HandoffTables.TableEntry[0].VendorTable = SmbiosTable;\r
+\r
+ DEBUG ((DEBUG_INFO, "The Smbios Table starts at: 0x%x\n", SmbiosTable->TableAddress));\r
+ DEBUG ((DEBUG_INFO, "The Smbios Table size: 0x%x\n", SmbiosTable->TableLength));\r
+\r
+ Status = TcgDxeHashLogExtendEvent (\r
+ 0,\r
+ (UINT8*)(UINTN)SmbiosTable->TableAddress,\r
+ SmbiosTable->TableLength,\r
+ &TcgEvent,\r
+ (UINT8*)&HandoffTables\r
+ );\r
+ }\r
+\r
+ if (PcdGet8 (PcdTpmPlatformClass) == TCG_PLATFORM_TYPE_SERVER) {\r
+ //\r
+ // Tcg Server spec. \r
+ // Measure each processor EFI_CPU_PHYSICAL_LOCATION with EV_TABLE_OF_DEVICES to PCR[1]\r
+ //\r
+ Status = GetProcessorsCpuLocation(&ProcessorLocBuf, &ProcessorNum);\r
+\r
+ if (!EFI_ERROR(Status)){\r
+ TcgEvent.PCRIndex = 1;\r
+ TcgEvent.EventType = EV_TABLE_OF_DEVICES;\r
+ TcgEvent.EventSize = sizeof (HandoffTables);\r
+\r
+ HandoffTables.NumberOfTables = 1;\r
+ HandoffTables.TableEntry[0].VendorGuid = gEfiMpServiceProtocolGuid;\r
+ HandoffTables.TableEntry[0].VendorTable = ProcessorLocBuf;\r
+\r
+ Status = TcgDxeHashLogExtendEvent (\r
+ 0,\r
+ (UINT8*)(UINTN)ProcessorLocBuf,\r
+ sizeof(EFI_CPU_PHYSICAL_LOCATION) * ProcessorNum,\r
+ &TcgEvent,\r
+ (UINT8*)&HandoffTables\r
+ );\r
+\r
+ FreePool(ProcessorLocBuf);\r
+ }\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Measure and log Separator event, and extend the measurement result into a specific PCR.\r
+\r
+ @param[in] PCRIndex PCR index. \r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+MeasureSeparatorEvent (\r
+ IN TPM_PCRINDEX PCRIndex\r
+ )\r
+{\r
+ TCG_PCR_EVENT_HDR TcgEvent;\r
+ UINT32 EventData;\r
+\r
+ DEBUG ((EFI_D_INFO, "MeasureSeparatorEvent Pcr - %x\n", PCRIndex));\r
+\r
+ EventData = 0;\r
+ TcgEvent.PCRIndex = PCRIndex;\r
+ TcgEvent.EventType = EV_SEPARATOR;\r
+ TcgEvent.EventSize = (UINT32)sizeof (EventData);\r
+ return TcgDxeHashLogExtendEvent (\r
+ 0,\r
+ (UINT8 *)&EventData,\r
+ sizeof (EventData),\r
+ &TcgEvent,\r
+ (UINT8 *)&EventData\r
+ );\r
+}\r
+\r
+/**\r
+ Measure and log an EFI variable, and extend the measurement result into a specific PCR.\r
+\r
+ @param[in] PCRIndex PCR Index. \r
+ @param[in] EventType Event type. \r
+ @param[in] VarName A Null-terminated string that is the name of the vendor's variable.\r
+ @param[in] VendorGuid A unique identifier for the vendor.\r
+ @param[in] VarData The content of the variable data. \r
+ @param[in] VarSize The size of the variable data. \r
+ \r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Out of memory.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+MeasureVariable (\r
+ IN TPM_PCRINDEX PCRIndex,\r
+ IN TCG_EVENTTYPE EventType,\r
+ IN CHAR16 *VarName,\r
+ IN EFI_GUID *VendorGuid,\r
+ IN VOID *VarData,\r
+ IN UINTN VarSize\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ TCG_PCR_EVENT_HDR TcgEvent;\r
+ UINTN VarNameLength;\r
+ EFI_VARIABLE_DATA_TREE *VarLog;\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2Dxe: MeasureVariable (Pcr - %x, EventType - %x, ", (UINTN)PCRIndex, (UINTN)EventType));\r
+ DEBUG ((EFI_D_INFO, "VariableName - %s, VendorGuid - %g)\n", VarName, VendorGuid));\r
+\r
+ VarNameLength = StrLen (VarName);\r
+ TcgEvent.PCRIndex = PCRIndex;\r
+ TcgEvent.EventType = EventType;\r
+\r
+ TcgEvent.EventSize = (UINT32)(sizeof (*VarLog) + VarNameLength * sizeof (*VarName) + VarSize\r
+ - sizeof (VarLog->UnicodeName) - sizeof (VarLog->VariableData));\r
+\r
+ VarLog = (EFI_VARIABLE_DATA_TREE *)AllocatePool (TcgEvent.EventSize);\r
+ if (VarLog == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ VarLog->VariableName = *VendorGuid;\r
+ VarLog->UnicodeNameLength = VarNameLength;\r
+ VarLog->VariableDataLength = VarSize;\r
+ CopyMem (\r
+ VarLog->UnicodeName,\r
+ VarName,\r
+ VarNameLength * sizeof (*VarName)\r
+ );\r
+ if (VarSize != 0 && VarData != NULL) {\r
+ CopyMem (\r
+ (CHAR16 *)VarLog->UnicodeName + VarNameLength,\r
+ VarData,\r
+ VarSize\r
+ );\r
+ }\r
+\r
+ if (EventType == EV_EFI_VARIABLE_DRIVER_CONFIG) {\r
+ //\r
+ // Digest is the event data (EFI_VARIABLE_DATA)\r
+ //\r
+ Status = TcgDxeHashLogExtendEvent (\r
+ 0,\r
+ (UINT8*)VarLog,\r
+ TcgEvent.EventSize,\r
+ &TcgEvent,\r
+ (UINT8*)VarLog\r
+ );\r
+ } else {\r
+ Status = TcgDxeHashLogExtendEvent (\r
+ 0,\r
+ (UINT8*)VarData,\r
+ VarSize,\r
+ &TcgEvent,\r
+ (UINT8*)VarLog\r
+ );\r
+ }\r
+ FreePool (VarLog);\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Read then Measure and log an EFI variable, and extend the measurement result into a specific PCR.\r
+\r
+ @param[in] PCRIndex PCR Index. \r
+ @param[in] EventType Event type. \r
+ @param[in] VarName A Null-terminated string that is the name of the vendor's variable.\r
+ @param[in] VendorGuid A unique identifier for the vendor.\r
+ @param[out] VarSize The size of the variable data. \r
+ @param[out] VarData Pointer to the content of the variable. \r
+ \r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Out of memory.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+ReadAndMeasureVariable (\r
+ IN TPM_PCRINDEX PCRIndex,\r
+ IN TCG_EVENTTYPE EventType,\r
+ IN CHAR16 *VarName,\r
+ IN EFI_GUID *VendorGuid,\r
+ OUT UINTN *VarSize,\r
+ OUT VOID **VarData\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ Status = GetVariable2 (VarName, VendorGuid, VarData, VarSize);\r
+ if (EventType == EV_EFI_VARIABLE_DRIVER_CONFIG) {\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // It is valid case, so we need handle it.\r
+ //\r
+ *VarData = NULL;\r
+ *VarSize = 0;\r
+ }\r
+ } else {\r
+ //\r
+ // if status error, VarData is freed and set NULL by GetVariable2\r
+ //\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+ }\r
+\r
+ Status = MeasureVariable (\r
+ PCRIndex,\r
+ EventType,\r
+ VarName,\r
+ VendorGuid,\r
+ *VarData,\r
+ *VarSize\r
+ );\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Read then Measure and log an EFI boot variable, and extend the measurement result into PCR[5].\r
+\r
+ @param[in] VarName A Null-terminated string that is the name of the vendor's variable.\r
+ @param[in] VendorGuid A unique identifier for the vendor.\r
+ @param[out] VarSize The size of the variable data. \r
+ @param[out] VarData Pointer to the content of the variable. \r
+ \r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Out of memory.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+ReadAndMeasureBootVariable (\r
+ IN CHAR16 *VarName,\r
+ IN EFI_GUID *VendorGuid,\r
+ OUT UINTN *VarSize,\r
+ OUT VOID **VarData\r
+ )\r
+{\r
+ return ReadAndMeasureVariable (\r
+ 5,\r
+ EV_EFI_VARIABLE_BOOT,\r
+ VarName,\r
+ VendorGuid,\r
+ VarSize,\r
+ VarData\r
+ );\r
+}\r
+\r
+/**\r
+ Read then Measure and log an EFI Secure variable, and extend the measurement result into PCR[7].\r
+\r
+ @param[in] VarName A Null-terminated string that is the name of the vendor's variable.\r
+ @param[in] VendorGuid A unique identifier for the vendor.\r
+ @param[out] VarSize The size of the variable data. \r
+ @param[out] VarData Pointer to the content of the variable. \r
+ \r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Out of memory.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+ReadAndMeasureSecureVariable (\r
+ IN CHAR16 *VarName,\r
+ IN EFI_GUID *VendorGuid,\r
+ OUT UINTN *VarSize,\r
+ OUT VOID **VarData\r
+ )\r
+{\r
+ return ReadAndMeasureVariable (\r
+ 7,\r
+ EV_EFI_VARIABLE_DRIVER_CONFIG,\r
+ VarName,\r
+ VendorGuid,\r
+ VarSize,\r
+ VarData\r
+ );\r
+}\r
+\r
+/**\r
+ Measure and log all EFI boot variables, and extend the measurement result into a specific PCR.\r
+\r
+ The EFI boot variables are BootOrder and Boot#### variables.\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Out of memory.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+MeasureAllBootVariables (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINT16 *BootOrder;\r
+ UINTN BootCount;\r
+ UINTN Index;\r
+ VOID *BootVarData;\r
+ UINTN Size;\r
+\r
+ Status = ReadAndMeasureBootVariable (\r
+ mBootVarName,\r
+ &gEfiGlobalVariableGuid,\r
+ &BootCount,\r
+ (VOID **) &BootOrder\r
+ );\r
+ if (Status == EFI_NOT_FOUND || BootOrder == NULL) {\r
+ return EFI_SUCCESS;\r
+ }\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // BootOrder can't be NULL if status is not EFI_NOT_FOUND\r
+ //\r
+ FreePool (BootOrder);\r
+ return Status;\r
+ }\r
+\r
+ BootCount /= sizeof (*BootOrder);\r
+ for (Index = 0; Index < BootCount; Index++) {\r
+ UnicodeSPrint (mBootVarName, sizeof (mBootVarName), L"Boot%04x", BootOrder[Index]);\r
+ Status = ReadAndMeasureBootVariable (\r
+ mBootVarName,\r
+ &gEfiGlobalVariableGuid,\r
+ &Size,\r
+ &BootVarData\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ FreePool (BootVarData);\r
+ }\r
+ }\r
+\r
+ FreePool (BootOrder);\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Measure and log all EFI Secure variables, and extend the measurement result into a specific PCR.\r
+\r
+ The EFI boot variables are BootOrder and Boot#### variables.\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Out of memory.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+MeasureAllSecureVariables (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ VOID *Data;\r
+ UINTN DataSize;\r
+ UINTN Index;\r
+\r
+ Status = EFI_NOT_FOUND;\r
+ for (Index = 0; Index < sizeof(mVariableType)/sizeof(mVariableType[0]); Index++) {\r
+ Status = ReadAndMeasureSecureVariable (\r
+ mVariableType[Index].VariableName,\r
+ mVariableType[Index].VendorGuid,\r
+ &DataSize,\r
+ &Data\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ if (Data != NULL) {\r
+ FreePool (Data);\r
+ }\r
+ }\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Measure and log launch of FirmwareDebugger, and extend the measurement result into a specific PCR.\r
+\r
+ @retval EFI_SUCCESS Operation completed successfully.\r
+ @retval EFI_OUT_OF_RESOURCES Out of memory.\r
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
+\r
+**/\r
+EFI_STATUS\r
+MeasureLaunchOfFirmwareDebugger (\r
+ VOID\r
+ )\r
+{\r
+ TCG_PCR_EVENT_HDR TcgEvent;\r
+\r
+ TcgEvent.PCRIndex = 7;\r
+ TcgEvent.EventType = EV_EFI_ACTION;\r
+ TcgEvent.EventSize = sizeof(FIRMWARE_DEBUGGER_EVENT_STRING) - 1;\r
+ return TcgDxeHashLogExtendEvent (\r
+ 0,\r
+ (UINT8 *)FIRMWARE_DEBUGGER_EVENT_STRING,\r
+ sizeof(FIRMWARE_DEBUGGER_EVENT_STRING) - 1,\r
+ &TcgEvent,\r
+ (UINT8 *)FIRMWARE_DEBUGGER_EVENT_STRING\r
+ );\r
+}\r
+\r
+/**\r
+ Measure and log all Secure Boot Policy, and extend the measurement result into a specific PCR.\r
+\r
+ Platform firmware adhering to the policy must therefore measure the following values into PCR[7]: (in order listed)\r
+ - The contents of the SecureBoot variable\r
+ - The contents of the PK variable\r
+ - The contents of the KEK variable\r
+ - The contents of the EFI_IMAGE_SECURITY_DATABASE variable\r
+ - The contents of the EFI_IMAGE_SECURITY_DATABASE1 variable\r
+ - Separator\r
+ - Entries in the EFI_IMAGE_SECURITY_DATABASE that are used to validate EFI Drivers or EFI Boot Applications in the boot path\r
+\r
+ NOTE: Because of the above, UEFI variables PK, KEK, EFI_IMAGE_SECURITY_DATABASE,\r
+ EFI_IMAGE_SECURITY_DATABASE1 and SecureBoot SHALL NOT be measured into PCR[3].\r
+\r
+ @param[in] Event Event whose notification function is being invoked\r
+ @param[in] Context Pointer to the notification function's context\r
+**/\r
+VOID\r
+EFIAPI\r
+MeasureSecureBootPolicy (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ VOID *Protocol;\r
+\r
+ Status = gBS->LocateProtocol (&gEfiVariableWriteArchProtocolGuid, NULL, (VOID **)&Protocol);\r
+ if (EFI_ERROR (Status)) {\r
+ return;\r
+ }\r
+\r
+ if (PcdGetBool (PcdFirmwareDebuggerInitialized)) {\r
+ Status = MeasureLaunchOfFirmwareDebugger ();\r
+ DEBUG ((EFI_D_INFO, "MeasureLaunchOfFirmwareDebugger - %r\n", Status));\r
+ }\r
+\r
+ Status = MeasureAllSecureVariables ();\r
+ DEBUG ((EFI_D_INFO, "MeasureAllSecureVariables - %r\n", Status));\r
+\r
+ //\r
+ // We need measure Separator(7) here, because this event must be between SecureBootPolicy (Configure)\r
+ // and ImageVerification (Authority)\r
+ // There might be a case that we need measure UEFI image from DriverOrder, besides BootOrder. So\r
+ // the Authority measurement happen before ReadToBoot event.\r
+ //\r
+ Status = MeasureSeparatorEvent (7);\r
+ DEBUG ((EFI_D_INFO, "MeasureSeparatorEvent - %r\n", Status));\r
+ return ;\r
+}\r
+\r
+/**\r
+ Ready to Boot Event notification handler.\r
+\r
+ Sequence of OS boot events is measured in this event notification handler.\r
+\r
+ @param[in] Event Event whose notification function is being invoked\r
+ @param[in] Context Pointer to the notification function's context\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+OnReadyToBoot (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ TPM_PCRINDEX PcrIndex;\r
+\r
+ PERF_START_EX (mImageHandle, "EventRec", "Tcg2Dxe", 0, PERF_ID_TCG2_DXE);\r
+ if (mBootAttempts == 0) {\r
+\r
+ //\r
+ // Measure handoff tables.\r
+ //\r
+ Status = MeasureHandoffTables ();\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "HOBs not Measured. Error!\n"));\r
+ }\r
+\r
+ //\r
+ // Measure BootOrder & Boot#### variables.\r
+ //\r
+ Status = MeasureAllBootVariables ();\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "Boot Variables not Measured. Error!\n"));\r
+ }\r
+\r
+ //\r
+ // 1. This is the first boot attempt.\r
+ //\r
+ Status = TcgMeasureAction (\r
+ EFI_CALLING_EFI_APPLICATION\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%s not Measured. Error!\n", EFI_CALLING_EFI_APPLICATION));\r
+ }\r
+\r
+ //\r
+ // 2. Draw a line between pre-boot env and entering post-boot env.\r
+ // PCR[7] is already done.\r
+ //\r
+ for (PcrIndex = 0; PcrIndex < 7; PcrIndex++) {\r
+ Status = MeasureSeparatorEvent (PcrIndex);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "Seperator Event not Measured. Error!\n"));\r
+ }\r
+ }\r
+\r
+ //\r
+ // 3. Measure GPT. It would be done in SAP driver.\r
+ //\r
+\r
+ //\r
+ // 4. Measure PE/COFF OS loader. It would be done in SAP driver.\r
+ //\r
+\r
+ //\r
+ // 5. Read & Measure variable. BootOrder already measured.\r
+ //\r
+ } else {\r
+ //\r
+ // 6. Not first attempt, meaning a return from last attempt\r
+ //\r
+ Status = TcgMeasureAction (\r
+ EFI_RETURNING_FROM_EFI_APPLICATOIN\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%s not Measured. Error!\n", EFI_RETURNING_FROM_EFI_APPLICATOIN));\r
+ }\r
+ }\r
+\r
+ DEBUG ((EFI_D_INFO, "TPM2 Tcg2Dxe Measure Data when ReadyToBoot\n"));\r
+ //\r
+ // Increase boot attempt counter.\r
+ //\r
+ mBootAttempts++;\r
+ PERF_END_EX (mImageHandle, "EventRec", "Tcg2Dxe", 0, PERF_ID_TCG2_DXE + 1);\r
+}\r
+\r
+/**\r
+ Exit Boot Services Event notification handler.\r
+\r
+ Measure invocation and success of ExitBootServices.\r
+\r
+ @param[in] Event Event whose notification function is being invoked\r
+ @param[in] Context Pointer to the notification function's context\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+OnExitBootServices (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Measure invocation of ExitBootServices,\r
+ //\r
+ Status = TcgMeasureAction (\r
+ EFI_EXIT_BOOT_SERVICES_INVOCATION\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%s not Measured. Error!\n", EFI_EXIT_BOOT_SERVICES_INVOCATION));\r
+ }\r
+\r
+ //\r
+ // Measure success of ExitBootServices\r
+ //\r
+ Status = TcgMeasureAction (\r
+ EFI_EXIT_BOOT_SERVICES_SUCCEEDED\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%s not Measured. Error!\n", EFI_EXIT_BOOT_SERVICES_SUCCEEDED));\r
+ }\r
+}\r
+\r
+/**\r
+ Exit Boot Services Failed Event notification handler.\r
+\r
+ Measure Failure of ExitBootServices.\r
+\r
+ @param[in] Event Event whose notification function is being invoked\r
+ @param[in] Context Pointer to the notification function's context\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+OnExitBootServicesFailed (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Measure Failure of ExitBootServices,\r
+ //\r
+ Status = TcgMeasureAction (\r
+ EFI_EXIT_BOOT_SERVICES_FAILED\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%s not Measured. Error!\n", EFI_EXIT_BOOT_SERVICES_FAILED));\r
+ }\r
+\r
+}\r
+\r
+/**\r
+ The function install Tcg2 protocol.\r
+ \r
+ @retval EFI_SUCCESS Tcg2 protocol is installed.\r
+ @retval other Some error occurs.\r
+**/\r
+EFI_STATUS\r
+InstallTcg2 (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_HANDLE Handle;\r
+\r
+ Handle = NULL;\r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
+ &Handle,\r
+ &gEfiTcg2ProtocolGuid,\r
+ &mTcg2Protocol,\r
+ NULL\r
+ );\r
+ return Status;\r
+}\r
+\r
+/**\r
+ The driver's entry point. It publishes EFI Tcg2 Protocol.\r
+\r
+ @param[in] ImageHandle The firmware allocated handle for the EFI image. \r
+ @param[in] SystemTable A pointer to the EFI System Table.\r
+ \r
+ @retval EFI_SUCCESS The entry point is executed successfully.\r
+ @retval other Some error occurs when executing this entry point.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DriverEntry (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_EVENT Event;\r
+ VOID *Registration;\r
+ UINT32 MaxCommandSize;\r
+ UINT32 MaxResponseSize;\r
+ TPML_PCR_SELECTION Pcrs;\r
+ UINTN Index;\r
+ EFI_TCG2_EVENT_ALGORITHM_BITMAP TpmHashAlgorithmBitmap;\r
+ UINT32 ActivePCRBanks;\r
+ UINT32 NumberOfPCRBanks;\r
+\r
+ mImageHandle = ImageHandle;\r
+\r
+ if (CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceNoneGuid) ||\r
+ CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm12Guid)){\r
+ DEBUG ((EFI_D_ERROR, "No TPM2 instance required!\n"));\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ if (GetFirstGuidHob (&gTpmErrorHobGuid) != NULL) {\r
+ DEBUG ((EFI_D_ERROR, "TPM2 error!\n"));\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+ \r
+ Status = Tpm2RequestUseTpm ();\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "TPM2 not detected!\n"));\r
+ return Status;\r
+ }\r
+ \r
+ //\r
+ // Fill information\r
+ //\r
+ ASSERT (TCG_EVENT_LOG_AREA_COUNT_MAX == sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0]));\r
+ \r
+ mTcgDxeData.BsCap.Size = sizeof(EFI_TCG2_BOOT_SERVICE_CAPABILITY);\r
+ mTcgDxeData.BsCap.ProtocolVersion.Major = 1;\r
+ mTcgDxeData.BsCap.ProtocolVersion.Minor = 1;\r
+ mTcgDxeData.BsCap.StructureVersion.Major = 1;\r
+ mTcgDxeData.BsCap.StructureVersion.Minor = 1;\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2.ProtocolVersion - %02x.%02x\n", mTcgDxeData.BsCap.ProtocolVersion.Major, mTcgDxeData.BsCap.ProtocolVersion.Minor));\r
+ DEBUG ((EFI_D_INFO, "Tcg2.StructureVersion - %02x.%02x\n", mTcgDxeData.BsCap.StructureVersion.Major, mTcgDxeData.BsCap.StructureVersion.Minor));\r
+\r
+ Status = Tpm2GetCapabilityManufactureID (&mTcgDxeData.BsCap.ManufacturerID);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "Tpm2GetCapabilityManufactureID fail!\n"));\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "Tpm2GetCapabilityManufactureID - %08x\n", mTcgDxeData.BsCap.ManufacturerID));\r
+ }\r
+\r
+ DEBUG_CODE (\r
+ UINT32 FirmwareVersion1;\r
+ UINT32 FirmwareVersion2;\r
+\r
+ Status = Tpm2GetCapabilityFirmwareVersion (&FirmwareVersion1, &FirmwareVersion2);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "Tpm2GetCapabilityFirmwareVersion fail!\n"));\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "Tpm2GetCapabilityFirmwareVersion - %08x %08x\n", FirmwareVersion1, FirmwareVersion2));\r
+ }\r
+ );\r
+\r
+ Status = Tpm2GetCapabilityMaxCommandResponseSize (&MaxCommandSize, &MaxResponseSize);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "Tpm2GetCapabilityMaxCommandResponseSize fail!\n"));\r
+ } else {\r
+ mTcgDxeData.BsCap.MaxCommandSize = (UINT16)MaxCommandSize;\r
+ mTcgDxeData.BsCap.MaxResponseSize = (UINT16)MaxResponseSize;\r
+ DEBUG ((EFI_D_INFO, "Tpm2GetCapabilityMaxCommandResponseSize - %08x, %08x\n", MaxCommandSize, MaxResponseSize));\r
+ }\r
+\r
+ //\r
+ // Get supported PCR and current Active PCRs\r
+ //\r
+ Status = Tpm2GetCapabilityPcrs (&Pcrs);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "Tpm2GetCapabilityPcrs fail!\n"));\r
+ TpmHashAlgorithmBitmap = EFI_TCG2_BOOT_HASH_ALG_SHA1;\r
+ NumberOfPCRBanks = 1;\r
+ ActivePCRBanks = EFI_TCG2_BOOT_HASH_ALG_SHA1;\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "Tpm2GetCapabilityPcrs Count - %08x\n", Pcrs.count));\r
+ NumberOfPCRBanks = 0;\r
+ TpmHashAlgorithmBitmap = 0;\r
+ ActivePCRBanks = 0;\r
+ for (Index = 0; Index < Pcrs.count; Index++) {\r
+ DEBUG ((EFI_D_INFO, "hash - %x\n", Pcrs.pcrSelections[Index].hash));\r
+ switch (Pcrs.pcrSelections[Index].hash) {\r
+ case TPM_ALG_SHA1:\r
+ TpmHashAlgorithmBitmap |= EFI_TCG2_BOOT_HASH_ALG_SHA1;\r
+ NumberOfPCRBanks ++;\r
+ if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r
+ ActivePCRBanks |= EFI_TCG2_BOOT_HASH_ALG_SHA1;\r
+ } \r
+ break;\r
+ case TPM_ALG_SHA256:\r
+ TpmHashAlgorithmBitmap |= EFI_TCG2_BOOT_HASH_ALG_SHA256;\r
+ NumberOfPCRBanks ++;\r
+ if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r
+ ActivePCRBanks |= EFI_TCG2_BOOT_HASH_ALG_SHA256;\r
+ }\r
+ break;\r
+ case TPM_ALG_SHA384:\r
+ TpmHashAlgorithmBitmap |= EFI_TCG2_BOOT_HASH_ALG_SHA384;\r
+ NumberOfPCRBanks ++;\r
+ if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r
+ ActivePCRBanks |= EFI_TCG2_BOOT_HASH_ALG_SHA384;\r
+ }\r
+ break;\r
+ case TPM_ALG_SHA512:\r
+ TpmHashAlgorithmBitmap |= EFI_TCG2_BOOT_HASH_ALG_SHA512;\r
+ NumberOfPCRBanks ++;\r
+ if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r
+ ActivePCRBanks |= EFI_TCG2_BOOT_HASH_ALG_SHA512;\r
+ }\r
+ break;\r
+ case TPM_ALG_SM3_256:\r
+ TpmHashAlgorithmBitmap |= EFI_TCG2_BOOT_HASH_ALG_SM3_256;\r
+ NumberOfPCRBanks ++;\r
+ if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r
+ ActivePCRBanks |= EFI_TCG2_BOOT_HASH_ALG_SM3_256;\r
+ }\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ mTcgDxeData.BsCap.HashAlgorithmBitmap = TpmHashAlgorithmBitmap & PcdGet32 (PcdTcg2HashAlgorithmBitmap);\r
+ mTcgDxeData.BsCap.ActivePcrBanks = ActivePCRBanks & PcdGet32 (PcdTcg2HashAlgorithmBitmap);\r
+\r
+ if (PcdGet32 (PcdTcg2NumberOfPCRBanks) == 0) {\r
+ mTcgDxeData.BsCap.NumberOfPCRBanks = NumberOfPCRBanks;\r
+ } else {\r
+ mTcgDxeData.BsCap.NumberOfPCRBanks = PcdGet32 (PcdTcg2NumberOfPCRBanks);\r
+ if (PcdGet32 (PcdTcg2NumberOfPCRBanks) > NumberOfPCRBanks) {\r
+ DEBUG ((EFI_D_ERROR, "ERROR: PcdTcg2NumberOfPCRBanks(0x%x) > NumberOfPCRBanks(0x%x)\n", PcdGet32 (PcdTcg2NumberOfPCRBanks), NumberOfPCRBanks));\r
+ mTcgDxeData.BsCap.NumberOfPCRBanks = NumberOfPCRBanks;\r
+ }\r
+ }\r
+\r
+ mTcgDxeData.BsCap.SupportedEventLogs = EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2 | EFI_TCG2_EVENT_LOG_FORMAT_TCG_2;\r
+ if ((mTcgDxeData.BsCap.ActivePcrBanks & TREE_BOOT_HASH_ALG_SHA1) == 0) {\r
+ //\r
+ // No need to expose TCG1.2 event log if SHA1 bank does not exist.\r
+ //\r
+ mTcgDxeData.BsCap.SupportedEventLogs &= ~TREE_EVENT_LOG_FORMAT_TCG_1_2;\r
+ }\r
+\r
+ DEBUG ((EFI_D_INFO, "Tcg2.SupportedEventLogs - 0x%08x\n", mTcgDxeData.BsCap.SupportedEventLogs));\r
+ DEBUG ((EFI_D_INFO, "Tcg2.HashAlgorithmBitmap - 0x%08x\n", mTcgDxeData.BsCap.HashAlgorithmBitmap));\r
+ DEBUG ((EFI_D_INFO, "Tcg2.NumberOfPCRBanks - 0x%08x\n", mTcgDxeData.BsCap.NumberOfPCRBanks));\r
+ DEBUG ((EFI_D_INFO, "Tcg2.ActivePcrBanks - 0x%08x\n", mTcgDxeData.BsCap.ActivePcrBanks));\r
+\r
+ if (mTcgDxeData.BsCap.TPMPresentFlag) {\r
+ //\r
+ // Setup the log area and copy event log from hob list to it\r
+ //\r
+ Status = SetupEventLog ();\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ //\r
+ // Measure handoff tables, Boot#### variables etc.\r
+ //\r
+ Status = EfiCreateEventReadyToBootEx (\r
+ TPL_CALLBACK,\r
+ OnReadyToBoot,\r
+ NULL,\r
+ &Event\r
+ );\r
+\r
+ Status = gBS->CreateEventEx (\r
+ EVT_NOTIFY_SIGNAL,\r
+ TPL_NOTIFY,\r
+ OnExitBootServices,\r
+ NULL,\r
+ &gEfiEventExitBootServicesGuid,\r
+ &Event\r
+ );\r
+\r
+ //\r
+ // Measure Exit Boot Service failed \r
+ //\r
+ Status = gBS->CreateEventEx (\r
+ EVT_NOTIFY_SIGNAL,\r
+ TPL_NOTIFY,\r
+ OnExitBootServicesFailed,\r
+ NULL,\r
+ &gEventExitBootServicesFailedGuid,\r
+ &Event\r
+ );\r
+\r
+ //\r
+ // Create event callback, because we need access variable on SecureBootPolicyVariable\r
+ // We should use VariableWriteArch instead of VariableArch, because Variable driver\r
+ // may update SecureBoot value based on last setting.\r
+ //\r
+ EfiCreateProtocolNotifyEvent (&gEfiVariableWriteArchProtocolGuid, TPL_CALLBACK, MeasureSecureBootPolicy, NULL, &Registration);\r
+ }\r
+\r
+ //\r
+ // Install Tcg2Protocol\r
+ //\r
+ Status = InstallTcg2 ();\r
+ DEBUG ((EFI_D_INFO, "InstallTcg2 - %r\n", Status));\r
+\r
+ return Status;\r
+}\r