diff options
| author | gdong1 <gdong1@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-02 07:49:32 +0000 |
|---|---|---|
| committer | gdong1 <gdong1@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-02 07:49:32 +0000 |
| commit | 0c18794ea4289f03fefc7117b56740414cc0536c (patch) | |
| tree | 4e51c5cc23c69a67cead8c58464da870daa4c029 /SecurityPkg/Tcg/TcgDxe | |
| parent | 986d1dfb0813d6a7623531e85c2e2a7e1f956cf8 (diff) | |
| download | edk2-0c18794ea4289f03fefc7117b56740414cc0536c.tar.gz edk2-0c18794ea4289f03fefc7117b56740414cc0536c.tar.bz2 edk2-0c18794ea4289f03fefc7117b56740414cc0536c.zip | |
Add security package to repository.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12261 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'SecurityPkg/Tcg/TcgDxe')
| -rw-r--r-- | SecurityPkg/Tcg/TcgDxe/TcgDxe.c | 1212 | ||||
| -rw-r--r-- | SecurityPkg/Tcg/TcgDxe/TcgDxe.inf | 70 | ||||
| -rw-r--r-- | SecurityPkg/Tcg/TcgDxe/TisDxe.c | 432 | ||||
| -rw-r--r-- | SecurityPkg/Tcg/TcgDxe/TpmComm.c | 163 | ||||
| -rw-r--r-- | SecurityPkg/Tcg/TcgDxe/TpmComm.h | 99 |
5 files changed, 1976 insertions, 0 deletions
diff --git a/SecurityPkg/Tcg/TcgDxe/TcgDxe.c b/SecurityPkg/Tcg/TcgDxe/TcgDxe.c new file mode 100644 index 0000000000..4cb5d3084b --- /dev/null +++ b/SecurityPkg/Tcg/TcgDxe/TcgDxe.c @@ -0,0 +1,1212 @@ +/** @file
+ This module implements TCG EFI Protocol.
+
+Copyright (c) 2005 - 2011, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <PiDxe.h>
+#include <IndustryStandard/Tpm12.h>
+#include <IndustryStandard/Acpi.h>
+#include <IndustryStandard/PeImage.h>
+#include <IndustryStandard/SmBios.h>
+
+#include <Guid/GlobalVariable.h>
+#include <Guid/SmBios.h>
+#include <Guid/HobList.h>
+#include <Guid/TcgEventHob.h>
+#include <Guid/EventGroup.h>
+#include <Protocol/DevicePath.h>
+#include <Protocol/TcgService.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/TpmCommLib.h>
+#include <Library/PcdLib.h>
+#include <Library/UefiLib.h>
+
+#include "TpmComm.h"
+
+#define EFI_TCG_LOG_AREA_SIZE 0x10000
+
+#pragma pack (1)
+
+typedef struct _EFI_TCG_CLIENT_ACPI_TABLE {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT16 PlatformClass;
+ UINT32 Laml;
+ EFI_PHYSICAL_ADDRESS Lasa;
+} EFI_TCG_CLIENT_ACPI_TABLE;
+
+typedef struct _EFI_TCG_SERVER_ACPI_TABLE {
+ EFI_ACPI_DESCRIPTION_HEADER Header;
+ UINT16 PlatformClass;
+ UINT16 Reserved0;
+ UINT64 Laml;
+ EFI_PHYSICAL_ADDRESS Lasa;
+ UINT16 SpecRev;
+ UINT8 DeviceFlags;
+ UINT8 InterruptFlags;
+ UINT8 Gpe;
+ UINT8 Reserved1[3];
+ UINT32 GlobalSysInt;
+ EFI_ACPI_3_0_GENERIC_ADDRESS_STRUCTURE BaseAddress;
+ UINT32 Reserved2;
+ EFI_ACPI_3_0_GENERIC_ADDRESS_STRUCTURE ConfigAddress;
+ UINT8 PciSegNum;
+ UINT8 PciBusNum;
+ UINT8 PciDevNum;
+ UINT8 PciFuncNum;
+} EFI_TCG_SERVER_ACPI_TABLE;
+
+#pragma pack ()
+
+#define TCG_DXE_DATA_FROM_THIS(this) \
+ BASE_CR (this, TCG_DXE_DATA, TcgProtocol)
+
+typedef struct _TCG_DXE_DATA {
+ EFI_TCG_PROTOCOL TcgProtocol;
+ TCG_EFI_BOOT_SERVICE_CAPABILITY BsCap;
+ EFI_TCG_CLIENT_ACPI_TABLE *TcgClientAcpiTable;
+ EFI_TCG_SERVER_ACPI_TABLE *TcgServerAcpiTable;
+ UINTN EventLogSize;
+ UINT8 *LastEvent;
+ TIS_TPM_HANDLE TpmHandle;
+} TCG_DXE_DATA;
+
+
+
+EFI_TCG_CLIENT_ACPI_TABLE mTcgClientAcpiTemplate = {
+ {
+ EFI_ACPI_3_0_TRUSTED_COMPUTING_PLATFORM_ALLIANCE_CAPABILITIES_TABLE_SIGNATURE,
+ sizeof (mTcgClientAcpiTemplate),
+ 0x02 //Revision
+ //
+ // Compiler initializes the remaining bytes to 0
+ // These fields should be filled in in production
+ //
+ },
+ 0, // 0 for PC Client Platform Class
+ 0, // Log Area Max Length
+ (EFI_PHYSICAL_ADDRESS) (SIZE_4GB - 1) // Log Area Start Address
+};
+
+//
+// The following EFI_TCG_SERVER_ACPI_TABLE default setting is just one example,
+// the TPM device connectes to LPC, and also defined the ACPI _UID as 0xFF,
+// this _UID can be changed and should match with the _UID setting of the TPM
+// ACPI device object
+//
+EFI_TCG_SERVER_ACPI_TABLE mTcgServerAcpiTemplate = {
+ {
+ EFI_ACPI_3_0_TRUSTED_COMPUTING_PLATFORM_ALLIANCE_CAPABILITIES_TABLE_SIGNATURE,
+ sizeof (mTcgServerAcpiTemplate),
+ 0x02 //Revision
+ //
+ // Compiler initializes the remaining bytes to 0
+ // These fields should be filled in in production
+ //
+ },
+ 1, // 1 for Server Platform Class
+ 0, // Reserved
+ 0, // Log Area Max Length
+ (EFI_PHYSICAL_ADDRESS) (SIZE_4GB - 1), // Log Area Start Address
+ 0x0100, // TCG Specification revision 1.0
+ 2, // Device Flags
+ 0, // Interrupt Flags
+ 0, // GPE
+ {0}, // Reserved 3 bytes
+ 0, // Global System Interrupt
+ {
+ EFI_ACPI_3_0_SYSTEM_MEMORY,
+ 0,
+ 0,
+ EFI_ACPI_3_0_BYTE,
+ TPM_BASE_ADDRESS // Base Address
+ },
+ 0, // Reserved
+ {0}, // Configuration Address
+ 0xFF, // ACPI _UID value of the device, can be changed for different platforms
+ 0, // ACPI _UID value of the device, can be changed for different platforms
+ 0, // ACPI _UID value of the device, can be changed for different platforms
+ 0 // ACPI _UID value of the device, can be changed for different platforms
+};
+
+UINTN mBootAttempts = 0;
+CHAR16 mBootVarName[] = L"BootOrder";
+
+/**
+ This service provides EFI protocol capability information, state information
+ about the TPM, and Event Log state information.
+
+ @param[in] This Indicates the calling context
+ @param[out] ProtocolCapability The callee allocates memory for a TCG_BOOT_SERVICE_CAPABILITY
+ structure and fills in the fields with the EFI protocol
+ capability information and the current TPM state information.
+ @param[out] TCGFeatureFlags This is a pointer to the feature flags. No feature
+ flags are currently defined so this parameter
+ MUST be set to 0. However, in the future,
+ feature flags may be defined that, for example,
+ enable hash algorithm agility.
+ @param[out] EventLogLocation This is a pointer to the address of the event log in memory.
+ @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.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_INVALID_PARAMETER ProtocolCapability does not match TCG capability.
+
+**/
+EFI_STATUS
+EFIAPI
+TcgDxeStatusCheck (
+ IN EFI_TCG_PROTOCOL *This,
+ OUT TCG_EFI_BOOT_SERVICE_CAPABILITY *ProtocolCapability,
+ OUT UINT32 *TCGFeatureFlags,
+ OUT EFI_PHYSICAL_ADDRESS *EventLogLocation,
+ OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry
+ )
+{
+ TCG_DXE_DATA *TcgData;
+
+ TcgData = TCG_DXE_DATA_FROM_THIS (This);
+
+ if (ProtocolCapability != NULL) {
+ *ProtocolCapability = TcgData->BsCap;
+ }
+
+ if (TCGFeatureFlags != NULL) {
+ *TCGFeatureFlags = 0;
+ }
+
+ if (EventLogLocation != NULL) {
+ if (PcdGet8 (PcdTpmPlatformClass) == TCG_PLATFORM_TYPE_CLIENT) {
+ *EventLogLocation = TcgData->TcgClientAcpiTable->Lasa;
+ } else {
+ *EventLogLocation = TcgData->TcgServerAcpiTable->Lasa;
+ }
+ }
+
+ if (EventLogLastEntry != NULL) {
+ if (TcgData->BsCap.TPMDeactivatedFlag) {
+ *EventLogLastEntry = (EFI_PHYSICAL_ADDRESS)(UINTN)0;
+ } else {
+ *EventLogLastEntry = (EFI_PHYSICAL_ADDRESS)(UINTN)TcgData->LastEvent;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ This service abstracts the capability to do a hash operation on a data buffer.
+
+ @param[in] This Indicates the calling context
+ @param[in] HashData Pointer to the data buffer to be hashed
+ @param[in] HashDataLen Length of the data buffer to be hashed
+ @param[in] AlgorithmId Identification of the Algorithm to use for the hashing operation
+ @param[in, out] HashedDataLen Resultant length of the hashed data
+ @param[in, out] HashedDataResult Resultant buffer of the hashed data
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_INVALID_PARAMETER HashDataLen is NULL.
+ @retval EFI_INVALID_PARAMETER HashDataLenResult is NULL.
+ @retval EFI_OUT_OF_RESOURCES Cannot allocate buffer of size *HashedDataLen.
+ @retval EFI_UNSUPPORTED AlgorithmId not supported.
+ @retval EFI_BUFFER_TOO_SMALL *HashedDataLen < sizeof (TCG_DIGEST).
+
+**/
+EFI_STATUS
+EFIAPI
+TcgDxeHashAll (
+ IN EFI_TCG_PROTOCOL *This,
+ IN UINT8 *HashData,
+ IN UINT64 HashDataLen,
+ IN TCG_ALGORITHM_ID AlgorithmId,
+ IN OUT UINT64 *HashedDataLen,
+ IN OUT UINT8 **HashedDataResult
+ )
+{
+ if (HashedDataLen == NULL || HashedDataResult == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ switch (AlgorithmId) {
+ case TPM_ALG_SHA:
+ if (*HashedDataLen == 0) {
+ *HashedDataLen = sizeof (TPM_DIGEST);
+ *HashedDataResult = AllocatePool ((UINTN) *HashedDataLen);
+ if (*HashedDataResult == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ }
+
+ if (*HashedDataLen < sizeof (TPM_DIGEST)) {
+ *HashedDataLen = sizeof (TPM_DIGEST);
+ return EFI_BUFFER_TOO_SMALL;
+ }
+ *HashedDataLen = sizeof (TPM_DIGEST);
+
+ return TpmCommHashAll (
+ HashData,
+ (UINTN) HashDataLen,
+ (TPM_DIGEST*)*HashedDataResult
+ );
+ default:
+ return EFI_UNSUPPORTED;
+ }
+}
+
+/**
+ Add a new entry to the Event Log.
+
+ @param[in] TcgData TCG_DXE_DATA structure.
+ @param[in] NewEventHdr Pointer to a TCG_PCR_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
+EFIAPI
+TcgDxeLogEventI (
+ IN TCG_DXE_DATA *TcgData,
+ IN TCG_PCR_EVENT_HDR *NewEventHdr,
+ IN UINT8 *NewEventData
+ )
+{
+ if (PcdGet8 (PcdTpmPlatformClass) == TCG_PLATFORM_TYPE_CLIENT) {
+ TcgData->LastEvent = (UINT8*)(UINTN)TcgData->TcgClientAcpiTable->Lasa;
+ return TpmCommLogEvent (
+ &TcgData->LastEvent,
+ &TcgData->EventLogSize,
+ (UINTN)TcgData->TcgClientAcpiTable->Laml,
+ NewEventHdr,
+ NewEventData
+ );
+ } else {
+ TcgData->LastEvent = (UINT8*)(UINTN)TcgData->TcgServerAcpiTable->Lasa;
+ return TpmCommLogEvent (
+ &TcgData->LastEvent,
+ &TcgData->EventLogSize,
+ (UINTN)TcgData->TcgServerAcpiTable->Laml,
+ NewEventHdr,
+ NewEventData
+ );
+ }
+}
+
+/**
+ This service abstracts the capability to add an entry to the Event Log.
+
+ @param[in] This Indicates the calling context
+ @param[in] TCGLogData Pointer to the start of the data buffer containing
+ the TCG_PCR_EVENT data structure. All fields in
+ this structure are properly filled by the caller.
+ @param[in, out] EventNumber The event number of the event just logged
+ @param[in] Flags Indicate additional flags. Only one flag has been
+ defined at this time, which is 0x01 and means the
+ extend operation should not be performed. All
+ other bits are reserved.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_OUT_OF_RESOURCES Insufficient memory in the event log to complete this action.
+
+**/
+EFI_STATUS
+EFIAPI
+TcgDxeLogEvent (
+ IN EFI_TCG_PROTOCOL *This,
+ IN TCG_PCR_EVENT *TCGLogData,
+ IN OUT UINT32 *EventNumber,
+ IN UINT32 Flags
+ )
+{
+ TCG_DXE_DATA *TcgData;
+
+ TcgData = TCG_DXE_DATA_FROM_THIS (This);
+
+ if (TcgData->BsCap.TPMDeactivatedFlag) {
+ return EFI_DEVICE_ERROR;
+ }
+ return TcgDxeLogEventI (
+ TcgData,
+ (TCG_PCR_EVENT_HDR*)TCGLogData,
+ TCGLogData->Event
+ );
+}
+
+/**
+ This service is a proxy for commands to the TPM.
+
+ @param[in] This Indicates the calling context
+ @param[in] TpmInputParameterBlockSize Size of the TPM input parameter block
+ @param[in] TpmInputParameterBlock Pointer to the TPM input parameter block
+ @param[in] TpmOutputParameterBlockSize Size of the TPM output parameter block
+ @param[in] TpmOutputParameterBlock Pointer to the TPM output parameter block
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_INVALID_PARAMETER Invalid ordinal.
+ @retval EFI_UNSUPPORTED Current Task Priority Level >= EFI_TPL_CALLBACK.
+ @retval EFI_TIMEOUT The TIS timed-out.
+
+**/
+EFI_STATUS
+EFIAPI
+TcgDxePassThroughToTpm (
+ IN EFI_TCG_PROTOCOL *This,
+ IN UINT32 TpmInputParameterBlockSize,
+ IN UINT8 *TpmInputParameterBlock,
+ IN UINT32 TpmOutputParameterBlockSize,
+ IN UINT8 *TpmOutputParameterBlock
+ )
+{
+ TCG_DXE_DATA *TcgData;
+
+ TcgData = TCG_DXE_DATA_FROM_THIS (This);
+
+ return TisPcExecute (
+ TcgData->TpmHandle,
+ "%r%/%r",
+ TpmInputParameterBlock,
+ (UINTN) TpmInputParameterBlockSize,
+ TpmOutputParameterBlock,
+ (UINTN) TpmOutputParameterBlockSize
+ );
+}
+
+/**
+ Do a hash operation on a data buffer, extend a specific TPM PCR with the hash result,
+ and add an entry to the Event Log.
+
+ @param[in] TcgData TCG_DXE_DATA structure.
+ @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 TCG_PCR_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
+EFIAPI
+TcgDxeHashLogExtendEventI (
+ IN TCG_DXE_DATA *TcgData,
+ IN UINT8 *HashData,
+ IN UINT64 HashDataLen,
+ IN OUT TCG_PCR_EVENT_HDR *NewEventHdr,
+ IN UINT8 *NewEventData
+ )
+{
+ EFI_STATUS Status;
+
+ if (HashDataLen > 0) {
+ Status = TpmCommHashAll (
+ HashData,
+ (UINTN) HashDataLen,
+ &NewEventHdr->Digest
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ Status = TpmCommExtend (
+ TcgData->TpmHandle,
+ &NewEventHdr->Digest,
+ NewEventHdr->PCRIndex,
+ NULL
+ );
+ if (!EFI_ERROR (Status)) {
+ Status = TcgDxeLogEventI (TcgData, NewEventHdr, NewEventData);
+ }
+
+ return Status;
+}
+
+/**
+ This service abstracts the capability to do a hash operation on a data buffer,
+ extend a specific TPM PCR with the hash result, and add an entry to the Event Log
+
+ @param[in] This Indicates the calling context
+ @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] AlgorithmId Identification of the Algorithm to use for the hashing operation
+ @param[in, out] TCGLogData The physical address of the start of the data
+ buffer containing the TCG_PCR_EVENT data structure.
+ @param[in, out] EventNumber The event number of the event just logged.
+ @param[out] EventLogLastEntry Physical address of the first byte of the entry
+ just placed in the Event Log. If the Event Log was
+ empty when this function was called then this physical
+ address will be the same as the physical address of
+ the start of the Event Log.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_UNSUPPORTED AlgorithmId != TPM_ALG_SHA.
+ @retval EFI_UNSUPPORTED Current TPL >= EFI_TPL_CALLBACK.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+
+**/
+EFI_STATUS
+EFIAPI
+TcgDxeHashLogExtendEvent (
+ IN EFI_TCG_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS HashData,
+ IN UINT64 HashDataLen,
+ IN TPM_ALGORITHM_ID AlgorithmId,
+ IN OUT TCG_PCR_EVENT *TCGLogData,
+ IN OUT UINT32 *EventNumber,
+ OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry
+ )
+{
+ TCG_DXE_DATA *TcgData;
+
+ TcgData = TCG_DXE_DATA_FROM_THIS (This);
+
+ if (TcgData->BsCap.TPMDeactivatedFlag) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ if (AlgorithmId != TPM_ALG_SHA) {
+ return EFI_UNSUPPORTED;
+ }
+
+ return TcgDxeHashLogExtendEventI (
+ TcgData,
+ (UINT8 *) (UINTN) HashData,
+ HashDataLen,
+ (TCG_PCR_EVENT_HDR*)TCGLogData,
+ TCGLogData->Event
+ );
+}
+
+TCG_DXE_DATA mTcgDxeData = {
+ {
+ TcgDxeStatusCheck,
+ TcgDxeHashAll,
+ TcgDxeLogEvent,
+ TcgDxePassThroughToTpm,
+ TcgDxeHashLogExtendEvent
+ },
+ {
+ sizeof (mTcgDxeData.BsCap),
+ { 1, 2, 0, 0 },
+ { 1, 2, 0, 0 },
+ 1,
+ TRUE,
+ FALSE
+ },
+ &mTcgClientAcpiTemplate,
+ &mTcgServerAcpiTemplate,
+ 0,
+ NULL,
+ NULL
+};
+
+/**
+ Initialize the 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
+EFIAPI
+SetupEventLog (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ TCG_PCR_EVENT *TcgEvent;
+ EFI_PEI_HOB_POINTERS GuidHob;
+ EFI_PHYSICAL_ADDRESS Lasa;
+
+ if (PcdGet8 (PcdTpmPlatformClass) == TCG_PLATFORM_TYPE_CLIENT) {
+ Lasa = mTcgClientAcpiTemplate.Lasa;
+
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ EfiACPIMemoryNVS,
+ EFI_SIZE_TO_PAGES (EFI_TCG_LOG_AREA_SIZE),
+ &Lasa
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ mTcgClientAcpiTemplate.Lasa = Lasa;
+ //
+ // To initialize them as 0xFF is recommended
+ // because the OS can know the last entry for that.
+ //
+ SetMem ((VOID *)(UINTN)mTcgClientAcpiTemplate.Lasa, EFI_TCG_LOG_AREA_SIZE, 0xFF);
+ mTcgClientAcpiTemplate.Laml = EFI_TCG_LOG_AREA_SIZE;
+
+ } else {
+ Lasa = mTcgServerAcpiTemplate.Lasa;
+
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ EfiACPIMemoryNVS,
+ EFI_SIZE_TO_PAGES (EFI_TCG_LOG_AREA_SIZE),
+ &Lasa
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ mTcgServerAcpiTemplate.Lasa = Lasa;
+ //
+ // To initialize them as 0xFF is recommended
+ // because the OS can know the last entry for that.
+ //
+ SetMem ((VOID *)(UINTN)mTcgServerAcpiTemplate.Lasa, EFI_TCG_LOG_AREA_SIZE, 0xFF);
+ mTcgServerAcpiTemplate.Laml = EFI_TCG_LOG_AREA_SIZE;
+ }
+
+ GuidHob.Raw = GetHobList ();
+ while (!EFI_ERROR (Status) &&
+ (GuidHob.Raw = GetNextGuidHob (&gTcgEventEntryHobGuid, GuidHob.Raw)) != NULL) {
+ TcgEvent = GET_GUID_HOB_DATA (GuidHob.Guid);
+ GuidHob.Raw = GET_NEXT_HOB (GuidHob);
+ Status = TcgDxeLogEventI (
+ &mTcgDxeData,
+ (TCG_PCR_EVENT_HDR*)TcgEvent,
+ TcgEvent->Event
+ );
+ }
+
+ return Status;
+}
+
+/**
+ Measure and log an action string, and extend the measurement result into PCR[5].
+
+ @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
+EFIAPI
+TcgMeasureAction (
+ IN CHAR8 *String
+ )
+{
+ TCG_PCR_EVENT_HDR TcgEvent;
+
+ TcgEvent.PCRIndex = 5;
+ TcgEvent.EventType = EV_EFI_ACTION;
+ TcgEvent.EventSize = (UINT32)AsciiStrLen (String);
+ return TcgDxeHashLogExtendEventI (
+ &mTcgDxeData,
+ (UINT8*)String,
+ TcgEvent.EventSize,
+ &TcgEvent,
+ (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
+EFIAPI
+MeasureHandoffTables (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ SMBIOS_TABLE_ENTRY_POINT *SmbiosTable;
+ TCG_PCR_EVENT_HDR TcgEvent;
+ EFI_HANDOFF_TABLE_POINTERS HandoffTables;
+
+ Status = EfiGetSystemConfigurationTable (
+ &gEfiSmbiosTableGuid,
+ (VOID **) &SmbiosTable
+ );
+
+ if (!EFI_ERROR (Status)) {
+ ASSERT (SmbiosTable != NULL);
+
+ TcgEvent.PCRIndex = 1;
+ TcgEvent.EventType = EV_EFI_HANDOFF_TABLES;
+ TcgEvent.EventSize = sizeof (HandoffTables);
+
+ HandoffTables.NumberOfTables = 1;
+ HandoffTables.TableEntry[0].VendorGuid = gEfiSmbiosTableGuid;
+ HandoffTables.TableEntry[0].VendorTable = SmbiosTable;
+
+ DEBUG ((DEBUG_INFO, "The Smbios Table starts at: 0x%x\n", SmbiosTable->TableAddress));
+ DEBUG ((DEBUG_INFO, "The Smbios Table size: 0x%x\n", SmbiosTable->TableLength));
+
+ Status = TcgDxeHashLogExtendEventI (
+ &mTcgDxeData,
+ (UINT8*)(UINTN)SmbiosTable->TableAddress,
+ SmbiosTable->TableLength,
+ &TcgEvent,
+ (UINT8*)&HandoffTables
+ );
+ }
+
+ 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
+EFIAPI
+MeasureSeparatorEvent (
+ IN TPM_PCRINDEX PCRIndex
+ )
+{
+ TCG_PCR_EVENT_HDR TcgEvent;
+ UINT32 EventData;
+
+ EventData = 0;
+ TcgEvent.PCRIndex = PCRIndex;
+ TcgEvent.EventType = EV_SEPARATOR;
+ TcgEvent.EventSize = (UINT32)sizeof (EventData);
+ return TcgDxeHashLogExtendEventI (
+ &mTcgDxeData,
+ (UINT8 *)&EventData,
+ sizeof (EventData),
+ &TcgEvent,
+ (UINT8 *)&EventData
+ );
+}
+
+/**
+ Read an EFI Variable.
+
+ This function allocates a buffer to return the contents of the variable. The caller is
+ responsible for freeing the buffer.
+
+ @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.
+
+ @return A pointer to the buffer to return the contents of the variable.Otherwise NULL.
+
+**/
+VOID *
+EFIAPI
+ReadVariable (
+ IN CHAR16 *VarName,
+ IN EFI_GUID *VendorGuid,
+ OUT UINTN *VarSize
+ )
+{
+ EFI_STATUS Status;
+ VOID *VarData;
+
+ *VarSize = 0;
+ Status = gRT->GetVariable (
+ VarName,
+ VendorGuid,
+ NULL,
+ VarSize,
+ NULL
+ );
+ if (Status != EFI_BUFFER_TOO_SMALL) {
+ return NULL;
+ }
+
+ VarData = AllocatePool (*VarSize);
+ if (VarData != NULL) {
+ Status = gRT->GetVariable (
+ VarName,
+ VendorGuid,
+ NULL,
+ VarSize,
+ VarData
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (VarData);
+ VarData = NULL;
+ *VarSize = 0;
+ }
+ }
+ return VarData;
+}
+
+/**
+ Measure and log an EFI variable, and extend the measurement result into a specific PCR.
+
+ @param[in] PCRIndex PCR 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
+EFIAPI
+MeasureVariable (
+ IN TPM_PCRINDEX PCRIndex,
+ IN TCG_EVENTTYPE EventType,
+ IN CHAR16 *VarName,
+ IN EFI_GUID *VendorGuid,
+ IN VOID *VarData,
+ IN UINTN VarSize
+ )
+{
+ EFI_STATUS Status;
+ TCG_PCR_EVENT_HDR TcgEvent;
+ UINTN VarNameLength;
+ EFI_VARIABLE_DATA *VarLog;
+
+ VarNameLength = StrLen (VarName);
+ TcgEvent.PCRIndex = PCRIndex;
+ TcgEvent.EventType = EventType;
+ TcgEvent.EventSize = (UINT32)(sizeof (*VarLog) + VarNameLength * sizeof (*VarName) + VarSize
+ - sizeof (VarLog->UnicodeName) - sizeof (VarLog->VariableData));
+
+ VarLog = (EFI_VARIABLE_DATA*)AllocatePool (TcgEvent.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)
+ );
+ CopyMem (
+ (CHAR16 *)VarLog->UnicodeName + VarNameLength,
+ VarData,
+ VarSize
+ );
+
+ Status = TcgDxeHashLogExtendEventI (
+ &mTcgDxeData,
+ (UINT8*)VarData,
+ VarSize,
+ &TcgEvent,
+ (UINT8*)VarLog
+ );
+ FreePool (VarLog);
+ return Status;
+}
+
+/**
+ Read then Measure and log an EFI boot variable, and extend the measurement result into PCR[5].
+
+ @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
+EFIAPI
+ReadAndMeasureBootVariable (
+ IN CHAR16 *VarName,
+ IN EFI_GUID *VendorGuid,
+ OUT UINTN *VarSize,
+ OUT VOID **VarData
+ )
+{
+ EFI_STATUS Status;
+
+ *VarData = ReadVariable (VarName, VendorGuid, VarSize);
+ if (*VarData == NULL) {
+ return EFI_NOT_FOUND;
+ }
+
+ Status = MeasureVariable (
+ 5,
+ EV_EFI_VARIABLE_BOOT,
+ VarName,
+ VendorGuid,
+ *VarData,
+ *VarSize
+ );
+ return Status;
+}
+
+/**
+ 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
+EFIAPI
+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) {
+ return EFI_SUCCESS;
+ }
+ ASSERT (BootOrder != NULL);
+
+ if (EFI_ERROR (Status)) {
+ 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;
+}
+
+/**
+ 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;
+ TPM_PCRINDEX PcrIndex;
+
+ if (mBootAttempts == 0) {
+
+ //
+ // Measure handoff tables.
+ //
+ Status = MeasureHandoffTables ();
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "HOBs not Measured. Error!\n"));
+ }
+
+ //
+ // Measure BootOrder & Boot#### variables.
+ //
+ Status = MeasureAllBootVariables ();
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "Boot Variables not Measured. Error!\n"));
+ }
+
+ //
+ // 1. This is the first boot attempt.
+ //
+ Status = TcgMeasureAction (
+ EFI_CALLING_EFI_APPLICATION
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // 2. Draw a line between pre-boot env and entering post-boot env.
+ //
+ for (PcrIndex = 0; PcrIndex < 8; PcrIndex++) {
+ Status = MeasureSeparatorEvent (PcrIndex);
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ //
+ // 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 = TcgMeasureAction (
+ EFI_RETURNING_FROM_EFI_APPLICATOIN
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ DEBUG ((EFI_D_INFO, "TPM TcgDxe Measure Data when ReadyToBoot\n"));
+ //
+ // Increase boot attempt counter.
+ //
+ mBootAttempts++;
+}
+
+/**
+ Install TCG ACPI Table when ACPI Table Protocol is available.
+
+ A system¡¯s firmware uses an ACPI table to identify the system's TCG capabilities
+ to the Post-Boot environment. The information in this ACPI table is not guaranteed
+ to be valid until the Host Platform transitions from pre-boot state to post-boot state.
+
+ @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;
+ UINT8 Checksum;
+
+ Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **)&AcpiTable);
+ if (EFI_ERROR (Status)) {
+ return;
+ }
+
+ if (PcdGet8 (PcdTpmPlatformClass) == TCG_PLATFORM_TYPE_CLIENT) {
+
+ //
+ // The ACPI table must be checksumed before calling the InstallAcpiTable()
+ // service of the ACPI table protocol to install it.
+ //
+ Checksum = CalculateCheckSum8 ((UINT8 *)&mTcgClientAcpiTemplate, sizeof (mTcgClientAcpiTemplate));
+ mTcgClientAcpiTemplate.Header.Checksum = Checksum;
+
+ Status = AcpiTable->InstallAcpiTable (
+ AcpiTable,
+ &mTcgClientAcpiTemplate,
+ sizeof (mTcgClientAcpiTemplate),
+ &TableKey
+ );
+ } else {
+
+ //
+ // The ACPI table must be checksumed before calling the InstallAcpiTable()
+ // service of the ACPI table protocol to install it.
+ //
+ Checksum = CalculateCheckSum8 ((UINT8 *)&mTcgServerAcpiTemplate, sizeof (mTcgServerAcpiTemplate));
+ mTcgServerAcpiTemplate.Header.Checksum = Checksum;
+
+ Status = AcpiTable->InstallAcpiTable (
+ AcpiTable,
+ &mTcgServerAcpiTemplate,
+ sizeof (mTcgServerAcpiTemplate),
+ &TableKey
+ );
+ }
+ ASSERT_EFI_ERROR (Status);
+}
+
+/**
+ 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 = TcgMeasureAction (
+ EFI_EXIT_BOOT_SERVICES_INVOCATION
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Measure success of ExitBootServices
+ //
+ Status = TcgMeasureAction (
+ EFI_EXIT_BOOT_SERVICES_SUCCEEDED
+ );
+ ASSERT_EFI_ERROR (Status);
+}
+
+/**
+ Get TPM Deactivated state.
+
+ @param[out] TPMDeactivatedFlag Returns TPM Deactivated state.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The operation was unsuccessful.
+
+**/
+EFI_STATUS
+GetTpmStatus (
+ OUT BOOLEAN *TPMDeactivatedFlag
+ )
+{
+ EFI_STATUS Status;
+ TPM_STCLEAR_FLAGS VFlags;
+
+ Status = TpmCommGetFlags (
+ mTcgDxeData.TpmHandle,
+ TPM_CAP_FLAG_VOLATILE,
+ &VFlags,
+ sizeof (VFlags)
+ );
+ if (!EFI_ERROR (Status)) {
+ *TPMDeactivatedFlag = VFlags.deactivated;
+ }
+
+ return Status;
+}
+
+/**
+ The driver's entry point.
+
+ It publishes EFI TCG 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;
+
+ mTcgDxeData.TpmHandle = (TIS_TPM_HANDLE)(UINTN)TPM_BASE_ADDRESS;
+ Status = TisPcRequestUseTpm (mTcgDxeData.TpmHandle);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "TPM not detected!\n"));
+ return Status;
+ }
+
+ Status = GetTpmStatus (&mTcgDxeData.BsCap.TPMDeactivatedFlag);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ EFI_D_ERROR,
+ "Line %d in file " __FILE__ ":\n "
+ "DriverEntry: TPM not working properly\n",
+ __LINE__
+ ));
+ return Status;
+ }
+
+ Status = gBS->InstallProtocolInterface (
+ &ImageHandle,
+ &gEfiTcgProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ &mTcgDxeData.TcgProtocol
+ );
+ //
+ // Install ACPI Table
+ //
+ EfiCreateProtocolNotifyEvent (&gEfiAcpiTableProtocolGuid, TPL_CALLBACK, InstallAcpiTable, NULL, &Registration);
+
+ if (!EFI_ERROR (Status) && !mTcgDxeData.BsCap.TPMDeactivatedFlag) {
+ //
+ // Setup the log area and copy event log from hob list to it
+ //
+ Status = SetupEventLog ();
+ 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
+ );
+ }
+
+ return Status;
+}
diff --git a/SecurityPkg/Tcg/TcgDxe/TcgDxe.inf b/SecurityPkg/Tcg/TcgDxe/TcgDxe.inf new file mode 100644 index 0000000000..95f37737c4 --- /dev/null +++ b/SecurityPkg/Tcg/TcgDxe/TcgDxe.inf @@ -0,0 +1,70 @@ +## @file
+# Component file for module TcgDxe.
+# This module will produce TCG protocol and measure boot environment.
+#
+# Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = TcgDxe
+ FILE_GUID = A5683620-7998-4bb2-A377-1C1E31E1E215
+ 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 = IA32 X64 IPF
+#
+
+[Sources]
+ TcgDxe.c
+ TisDxe.c
+ TpmComm.c
+ TpmComm.h
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ SecurityPkg/SecurityPkg.dec
+
+[LibraryClasses]
+ MemoryAllocationLib
+ BaseLib
+ UefiBootServicesTableLib
+ HobLib
+ UefiDriverEntryPoint
+ UefiRuntimeServicesTableLib
+ BaseMemoryLib
+ DebugLib
+ TpmCommLib
+ PrintLib
+ UefiLib
+
+[Guids]
+ gEfiSmbiosTableGuid # ALWAYS_CONSUMED
+ gEfiGlobalVariableGuid # ALWAYS_CONSUMED
+ gTcgEventEntryHobGuid
+ gEfiEventReadyToBootGuid
+ gEfiEventExitBootServicesGuid
+
+[Protocols]
+ gEfiTcgProtocolGuid ## PRODUCES
+ gEfiAcpiTableProtocolGuid # PROTOCOL ALWAYS_CONSUMED
+ gEfiDevicePathProtocolGuid # PROTOCOL ALWAYS_CONSUMED
+
+[Pcd]
+ gEfiSecurityPkgTokenSpaceGuid.PcdTpmPlatformClass
+
+[Depex]
+ TRUE
+
diff --git a/SecurityPkg/Tcg/TcgDxe/TisDxe.c b/SecurityPkg/Tcg/TcgDxe/TisDxe.c new file mode 100644 index 0000000000..635ff77e13 --- /dev/null +++ b/SecurityPkg/Tcg/TcgDxe/TisDxe.c @@ -0,0 +1,432 @@ +/** @file
+ TIS (TPM Interface Specification) functions used by TPM Dxe driver.
+
+Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <IndustryStandard/Tpm12.h>
+#include <Library/TimerLib.h>
+#include <Library/TpmCommLib.h>
+#include <Library/DebugLib.h>
+#include <Library/IoLib.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+
+STATIC UINT8 TpmCommandBuf[TPMCMDBUFLENGTH];
+
+/**
+ Send command to TPM for execution.
+
+ @param[in] TisReg TPM register space base address.
+ @param[in] TpmBuffer Buffer for TPM command data.
+ @param[in] DataLength TPM command data length.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_TIMEOUT The register can't run into the expected status in time.
+
+**/
+EFI_STATUS
+TisPcSend (
+ IN TIS_PC_REGISTERS_PTR TisReg,
+ IN UINT8 *TpmBuffer,
+ IN UINT32 DataLength
+ )
+{
+ UINT16 BurstCount;
+ UINT32 Index;
+ EFI_STATUS Status;
+
+ Status = TisPcPrepareCommand (TisReg);
+ if (EFI_ERROR (Status)){
+ DEBUG ((DEBUG_ERROR, "The Tpm not ready!\n"));
+ return Status;
+ }
+ Index = 0;
+ while (Index < DataLength) {
+ Status = TisPcReadBurstCount (TisReg, &BurstCount);
+ if (EFI_ERROR (Status)) {
+ return EFI_TIMEOUT;
+ }
+ for (; BurstCount > 0 && Index < DataLength; BurstCount--) {
+ MmioWrite8 ((UINTN) &TisReg->DataFifo, *(TpmBuffer + Index));
+ Index++;
+ }
+ }
+ //
+ // Ensure the Tpm status STS_EXPECT change from 1 to 0
+ //
+ Status = TisPcWaitRegisterBits (
+ &TisReg->Status,
+ (UINT8) TIS_PC_VALID,
+ TIS_PC_STS_EXPECT,
+ TIS_TIMEOUT_C
+ );
+ return Status;
+}
+
+/**
+ Receive response data of last command from TPM.
+
+ @param[in] TisReg TPM register space base address.
+ @param[out] TpmBuffer Buffer for response data.
+ @param[out] RespSize Response data length.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_TIMEOUT The register can't run into the expected status in time.
+ @retval EFI_DEVICE_ERROR Unexpected device status.
+ @retval EFI_BUFFER_TOO_SMALL Response data is too long.
+
+**/
+EFI_STATUS
+TisPcReceive (
+ IN TIS_PC_REGISTERS_PTR TisReg,
+ OUT UINT8 *TpmBuffer,
+ OUT UINT32 *RespSize
+ )
+{
+ EFI_STATUS Status;
+ UINT16 BurstCount;
+ UINT32 Index;
+ UINT32 ResponseSize;
+ UINT32 Data32;
+
+ //
+ // Wait for the command completion
+ //
+ Status = TisPcWaitRegisterBits (
+ &TisReg->Status,
+ (UINT8) (TIS_PC_VALID | TIS_PC_STS_DATA),
+ 0,
+ TIS_TIMEOUT_B
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_TIMEOUT;
+ }
+ //
+ // Read the response data header and check it
+ //
+ Index = 0;
+ BurstCount = 0;
+ while (Index < sizeof (TPM_RSP_COMMAND_HDR)) {
+ Status = TisPcReadBurstCount (TisReg, &BurstCount);
+ if (EFI_ERROR (Status)) {
+ return EFI_TIMEOUT;
+ }
+ for (; BurstCount > 0 ; BurstCount--) {
+ *(TpmBuffer + Index) = MmioRead8 ((UINTN) &TisReg->DataFifo);
+ Index++;
+ if (Index == sizeof (TPM_RSP_COMMAND_HDR))
+ break;
+ }
+ }
+ //
+ // Check the reponse data header (tag,parasize and returncode )
+ //
+ CopyMem (&Data32, (TpmBuffer + 2), sizeof (UINT32));
+ ResponseSize = SwapBytes32 (Data32);
+ *RespSize = ResponseSize;
+ if (ResponseSize == sizeof (TPM_RSP_COMMAND_HDR)) {
+ return EFI_SUCCESS;
+ }
+ if (ResponseSize < sizeof (TPM_RSP_COMMAND_HDR)) {
+ return EFI_DEVICE_ERROR;
+ }
+ if (ResponseSize > TPMCMDBUFLENGTH) {
+ return EFI_BUFFER_TOO_SMALL;
+ }
+ //
+ // Continue reading the remaining data
+ //
+ while (Index < ResponseSize) {
+ for (; BurstCount > 0 ; BurstCount--) {
+ *(TpmBuffer + Index) = MmioRead8 ((UINTN) &TisReg->DataFifo);
+ Index++;
+ if (Index == ResponseSize) {
+ return EFI_SUCCESS;
+ }
+ }
+ Status = TisPcReadBurstCount (TisReg, &BurstCount);
+ if (EFI_ERROR (Status) && (Index < ResponseSize)) {
+ return EFI_DEVICE_ERROR;
+ }
+ }
+ return EFI_SUCCESS;
+}
+
+/**
+ Format TPM command data according to the format control character.
+
+ @param[in] FmtChar Format control character.
+ @param[in, out] ap List of arguments.
+ @param[in] TpmBuffer Buffer for TPM command data.
+ @param[out] DataLength TPM command data length.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_INVALID_PARAMETER Invalid format control character.
+ @retval EFI_BUFFER_TOO_SMALL Buffer too small for command data.
+
+**/
+EFI_STATUS
+TisPcSendV (
+ IN UINT8 FmtChar,
+ IN OUT VA_LIST *ap,
+ UINT8 *TpmBuffer,
+ UINT32 *DataLength
+ )
+{
+ UINT8 DataByte;
+ UINT16 DataWord;
+ UINT32 DataDword;
+ TPM_RQU_COMMAND_HDR TpmCmdHdr;
+ TPM_RQU_COMMAND_HDR *TpmCmdPtr;
+ UINTN Size;
+ UINT8 *Raw;
+
+ switch (FmtChar) {
+
+ case 'b':
+ DataByte = VA_ARG (*ap, UINT8);
+ Raw = &DataByte;
+ Size = sizeof (DataByte);
+ break;
+
+ case 'w':
+ DataWord = VA_ARG (*ap, UINT16);
+ DataWord = SwapBytes16 (DataWord);
+ Raw = (UINT8*)&DataWord;
+ Size = sizeof (DataWord);
+ break;
+
+ case 'd':
+ DataDword = VA_ARG (*ap, UINT32);
+ DataDword = SwapBytes32 (DataDword);
+ Raw = (UINT8*)&DataDword;
+ Size = sizeof (DataDword);
+ break;
+
+ case 'h':
+ TpmCmdPtr = VA_ARG (*ap, TPM_RQU_COMMAND_HDR*);
+ TpmCmdHdr.tag = SwapBytes16 (TpmCmdPtr->tag);
+ TpmCmdHdr.paramSize = SwapBytes32 (TpmCmdPtr->paramSize);
+ TpmCmdHdr.ordinal = SwapBytes32 (TpmCmdPtr->ordinal);
+ Raw = (UINT8*) &TpmCmdHdr;
+ Size = sizeof (TpmCmdHdr);
+ break;
+
+ case 'r':
+ Raw = VA_ARG (*ap, UINT8*);
+ Size = VA_ARG (*ap, UINTN);
+ break;
+
+ case '\0':
+ return EFI_INVALID_PARAMETER;
+
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if(*DataLength + (UINT32) Size > TPMCMDBUFLENGTH) {
+ return EFI_BUFFER_TOO_SMALL;
+ }
+ CopyMem (TpmBuffer + *DataLength, Raw, Size);
+ *DataLength += (UINT32) Size;
+ return EFI_SUCCESS;
+}
+
+/**
+ Format reponse data according to the format control character.
+
+ @param[in] FmtChar Format control character.
+ @param[in, out] ap List of arguments.
+ @param[out] TpmBuffer Buffer for reponse data.
+ @param[in, out] DataIndex Data offset in reponse data buffer.
+ @param[in] RespSize Response data length.
+ @param[out] DataFinished Reach the end of Response data.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_INVALID_PARAMETER Invalid format control character.
+ @retval EFI_BUFFER_TOO_SMALL Buffer too small for command data.
+
+**/
+EFI_STATUS
+TisPcReceiveV (
+ IN UINT8 FmtChar,
+ IN OUT VA_LIST *ap,
+ OUT UINT8 *TpmBuffer,
+ IN OUT UINT32 *DataIndex,
+ IN UINT32 RespSize,
+ OUT BOOLEAN *DataFinished
+ )
+{
+ UINT8 *Raw;
+ TPM_RSP_COMMAND_HDR *TpmRspPtr;
+ UINTN Size;
+
+ Raw = VA_ARG (*ap, UINT8*);
+ switch (FmtChar) {
+
+ case 'b':
+ Size = sizeof (UINT8);
+ break;
+
+ case 'w':
+ Size = sizeof (UINT16);
+ break;
+
+ case 'd':
+ Size = sizeof (UINT32);
+ break;
+
+ case 'h':
+ Size = sizeof (*TpmRspPtr);
+ break;
+
+ case 'r':
+ Size = VA_ARG (*ap, UINTN);
+ if(*DataIndex + (UINT32) Size <= RespSize) {
+ break;
+ }
+ *DataFinished = TRUE;
+ if (*DataIndex >= RespSize) {
+ return EFI_SUCCESS;
+ }
+ CopyMem (Raw, TpmBuffer + *DataIndex, RespSize - *DataIndex);
+ *DataIndex += RespSize - *DataIndex;
+ return EFI_SUCCESS;
+
+ case '\0':
+ return EFI_INVALID_PARAMETER;
+
+ default:
+ return EFI_WARN_UNKNOWN_GLYPH;
+ }
+
+ if(*DataIndex + (UINT32) Size > RespSize) {
+ *DataFinished = TRUE;
+ return EFI_SUCCESS;
+ }
+
+ if( *DataIndex + (UINT32) Size > TPMCMDBUFLENGTH )
+ return EFI_BUFFER_TOO_SMALL;
+
+ CopyMem (Raw, TpmBuffer + *DataIndex, Size);
+ *DataIndex += (UINT32) Size;
+
+ switch (FmtChar) {
+
+ case 'w':
+ *(UINT16*)Raw = SwapBytes16 (*(UINT16*) Raw);
+ break;
+
+ case 'd':
+ *(UINT32*)Raw = SwapBytes32 (*(UINT32*) Raw);
+ break;
+
+ case 'h':
+ TpmRspPtr = (TPM_RSP_COMMAND_HDR*) Raw;
+ TpmRspPtr->tag = SwapBytes16 (TpmRspPtr->tag);
+ TpmRspPtr->paramSize = SwapBytes32 (TpmRspPtr->paramSize);
+ TpmRspPtr->returnCode = SwapBytes32 (TpmRspPtr->returnCode);
+ break;
+ }
+ return EFI_SUCCESS;
+}
+
+/**
+ Send formatted command to TPM for execution and return formatted data from response.
+
+ @param[in] TisReg TPM Handle.
+ @param[in] Fmt Format control string.
+ @param[in] ... The variable argument list.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_TIMEOUT The register can't run into the expected status in time.
+
+**/
+EFI_STATUS
+EFIAPI
+TisPcExecute (
+ IN TIS_TPM_HANDLE TisReg,
+ IN CONST CHAR8 *Fmt,
+ ...
+ )
+{
+ EFI_STATUS Status;
+ VA_LIST Ap;
+ UINT32 BufSize;
+ UINT32 ResponseSize;
+ BOOLEAN DataFinished;
+
+ VA_START (Ap, Fmt);
+
+ //
+ // Put the formatted command to the TpmCommandBuf
+ //
+ BufSize = 0;
+ while (*Fmt != '\0') {
+ if (*Fmt == '%') Fmt++;
+ if (*Fmt == '/') break;
+ Status = TisPcSendV (*Fmt, &Ap, TpmCommandBuf, &BufSize);
+ if (EFI_ERROR( Status )) {
+ return Status;
+ }
+ Fmt++;
+ }
+ //
+ // Send the command to TPM
+ //
+ Status = TisPcSend (TisReg, TpmCommandBuf, BufSize);
+ if (EFI_ERROR (Status)) {
+ //
+ // Ensure the TPM state change from "Reception" to "Idle/Ready"
+ //
+ MmioWrite8 ((UINTN) &(((TIS_PC_REGISTERS_PTR) TisReg)->Status), TIS_PC_STS_READY);
+ return Status;
+ }
+
+ MmioWrite8 ((UINTN) &(((TIS_PC_REGISTERS_PTR) TisReg)->Status), TIS_PC_STS_GO);
+ Fmt++;
+ //
+ // Receive the response data from TPM
+ //
+ ZeroMem (TpmCommandBuf, TPMCMDBUFLENGTH);
+ Status = TisPcReceive (TisReg, TpmCommandBuf, &ResponseSize);
+ //
+ // Ensure the TPM state change from "Execution" or "Completion" to "Idle/Ready"
+ //
+ MmioWrite8 ((UINTN) &(((TIS_PC_REGISTERS_PTR) TisReg)->Status), TIS_PC_STS_READY);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Get the formatted data from the TpmCommandBuf.
+ //
+ BufSize =0;
+ DataFinished = FALSE;
+ while (*Fmt != '\0') {
+ if (*Fmt == '%') {
+ Fmt++;
+ }
+ Status = TisPcReceiveV (*Fmt, &Ap, TpmCommandBuf, &BufSize, ResponseSize, &DataFinished);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ if (DataFinished) {
+ return EFI_SUCCESS;
+ }
+ Fmt++;
+ }
+
+ VA_END (Ap);
+ return Status;
+}
+
diff --git a/SecurityPkg/Tcg/TcgDxe/TpmComm.c b/SecurityPkg/Tcg/TcgDxe/TpmComm.c new file mode 100644 index 0000000000..c47794b4f6 --- /dev/null +++ b/SecurityPkg/Tcg/TcgDxe/TpmComm.c @@ -0,0 +1,163 @@ +/** @file
+ Utility functions used by TPM Dxe driver.
+
+Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <IndustryStandard/Tpm12.h>
+#include <IndustryStandard/UefiTcgPlatform.h>
+#include <Library/TpmCommLib.h>
+#include <Library/BaseMemoryLib.h>
+
+#include "TpmComm.h"
+
+/**
+ Extend a TPM PCR.
+
+ @param[in] TpmHandle TPM handle.
+ @param[in] DigestToExtend The 160 bit value representing the event to be recorded.
+ @param[in] PcrIndex The PCR to be updated.
+ @param[out] NewPcrValue New PCR value after extend.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+
+**/
+EFI_STATUS
+TpmCommExtend (
+ IN TIS_TPM_HANDLE TpmHandle,
+ IN TPM_DIGEST *DigestToExtend,
+ IN TPM_PCRINDEX PcrIndex,
+ OUT TPM_DIGEST *NewPcrValue
+ )
+{
+ EFI_STATUS Status;
+ TPM_DIGEST NewValue;
+ TPM_RQU_COMMAND_HDR CmdHdr;
+ TPM_RSP_COMMAND_HDR RspHdr;
+
+ if (NewPcrValue == NULL) {
+ NewPcrValue = &NewValue;
+ }
+
+ CmdHdr.tag = TPM_TAG_RQU_COMMAND;
+ CmdHdr.paramSize =
+ sizeof (CmdHdr) + sizeof (PcrIndex) + sizeof (*DigestToExtend);
+ CmdHdr.ordinal = TPM_ORD_Extend;
+ Status = TisPcExecute (
+ TpmHandle,
+ "%h%d%r%/%h%r",
+ &CmdHdr,
+ PcrIndex,
+ DigestToExtend,
+ (UINTN)sizeof (*DigestToExtend),
+ &RspHdr,
+ NewPcrValue,
+ (UINTN)sizeof (*NewPcrValue)
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ if (RspHdr.returnCode != 0) {
+ return EFI_DEVICE_ERROR;
+ }
+ return EFI_SUCCESS;
+}
+
+/**
+ Get TPM capability flags.
+
+ @param[in] TpmHandle TPM handle.
+ @param[in] FlagSubcap Flag subcap.
+ @param[out] FlagBuffer Pointer to the buffer for returned flag structure.
+ @param[in] FlagSize Size of the buffer.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+
+**/
+EFI_STATUS
+TpmCommGetFlags (
+ IN TIS_TPM_HANDLE TpmHandle,
+ IN UINT32 FlagSubcap,
+ OUT VOID *FlagBuffer,
+ IN UINTN FlagSize
+ )
+{
+ EFI_STATUS Status;
+ TPM_RQU_COMMAND_HDR CmdHdr;
+ TPM_RSP_COMMAND_HDR RspHdr;
+ UINT32 Size;
+
+ CmdHdr.tag = TPM_TAG_RQU_COMMAND;
+ CmdHdr.paramSize = sizeof (CmdHdr) + sizeof (UINT32) * 3;
+ CmdHdr.ordinal = TPM_ORD_GetCapability;
+
+ Status = TisPcExecute (
+ TpmHandle,
+ "%h%d%d%d%/%h%d%r",
+ &CmdHdr,
+ TPM_CAP_FLAG,
+ sizeof (FlagSubcap),
+ FlagSubcap,
+ &RspHdr,
+ &Size,
+ FlagBuffer,
+ FlagSize
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ if (RspHdr.returnCode != 0) {
+ return EFI_DEVICE_ERROR;
+ }
+ return EFI_SUCCESS;
+}
+
+/**
+ Add a new entry to the Event Log.
+
+ @param[in, out] EventLogPtr Pointer to the Event Log data.
+ @param[in, out] LogSize Size of the Event Log.
+ @param[in] MaxSize Maximum size of the Event Log.
+ @param[in] NewEventHdr Pointer to a TCG_PCR_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
+TpmCommLogEvent (
+ IN OUT UINT8 **EventLogPtr,
+ IN OUT UINTN *LogSize,
+ IN UINTN MaxSize,
+ IN TCG_PCR_EVENT_HDR *NewEventHdr,
+ IN UINT8 *NewEventData
+ )
+{
+ UINT32 NewLogSize;
+
+ NewLogSize = sizeof (*NewEventHdr) + NewEventHdr->EventSize;
+ if (NewLogSize + *LogSize > MaxSize) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ *EventLogPtr += *LogSize;
+ *LogSize += NewLogSize;
+ CopyMem (*EventLogPtr, NewEventHdr, sizeof (*NewEventHdr));
+ CopyMem (
+ *EventLogPtr + sizeof (*NewEventHdr),
+ NewEventData,
+ NewEventHdr->EventSize
+ );
+ return EFI_SUCCESS;
+}
diff --git a/SecurityPkg/Tcg/TcgDxe/TpmComm.h b/SecurityPkg/Tcg/TcgDxe/TpmComm.h new file mode 100644 index 0000000000..763ad76d62 --- /dev/null +++ b/SecurityPkg/Tcg/TcgDxe/TpmComm.h @@ -0,0 +1,99 @@ +/** @file
+ Definitions and function prototypes used by TPM DXE driver.
+
+Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _TPM_COMM_H_
+#define _TPM_COMM_H_
+
+/**
+ Add a new entry to the Event Log.
+
+ @param[in, out] EventLogPtr Pointer to the Event Log data.
+ @param[in, out] LogSize Size of the Event Log.
+ @param[in] MaxSize Maximum size of the Event Log.
+ @param[in] NewEventHdr Pointer to a TCG_PCR_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
+TpmCommLogEvent (
+ IN OUT UINT8 **EventLogPtr,
+ IN OUT UINTN *LogSize,
+ IN UINTN MaxSize,
+ IN TCG_PCR_EVENT_HDR *NewEventHdr,
+ IN UINT8 *NewEventData
+ );
+
+/**
+ Extend a TPM PCR.
+
+ @param[in] TpmHandle TPM handle.
+ @param[in] DigestToExtend The 160 bit value representing the event to be recorded.
+ @param[in] PcrIndex The PCR to be updated.
+ @param[out] NewPcrValue New PCR value after extend.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+
+**/
+EFI_STATUS
+TpmCommExtend (
+ IN TIS_TPM_HANDLE TpmHandle,
+ IN TPM_DIGEST *DigestToExtend,
+ IN TPM_PCRINDEX PcrIndex,
+ OUT TPM_DIGEST *NewPcrValue
+ );
+
+/**
+ Get TPM capability flags.
+
+ @param[in] TpmHandle TPM handle.
+ @param[in] FlagSubcap Flag subcap.
+ @param[out] FlagBuffer Pointer to the buffer for returned flag structure.
+ @param[in] FlagSize Size of the buffer.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+
+**/
+EFI_STATUS
+TpmCommGetFlags (
+ IN TIS_TPM_HANDLE TpmHandle,
+ IN UINT32 FlagSubcap,
+ OUT VOID *Buffer,
+ IN UINTN Size
+ );
+
+/**
+ Send formatted command to TPM for execution and return formatted data from response.
+
+ @param[in] TisReg TPM Handle.
+ @param[in] Fmt Format control string.
+ @param[in] ... The variable argument list.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_TIMEOUT The register can't run into the expected status in time.
+
+**/
+EFI_STATUS
+EFIAPI
+TisPcExecute (
+ IN TIS_TPM_HANDLE TisReg,
+ IN CONST CHAR8 *Fmt,
+ ...
+ );
+
+#endif // _TPM_COMM_H_
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