diff options
Diffstat (limited to 'SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c')
| -rw-r--r-- | SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c | 610 |
1 files changed, 610 insertions, 0 deletions
diff --git a/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c b/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c new file mode 100644 index 0000000000..e1835b9613 --- /dev/null +++ b/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c @@ -0,0 +1,610 @@ +/** @file
+ HII Config Access protocol implementation of TCG2 configuration module.
+ NOTE: This module is only for reference only, each platform should have its own setup page.
+
+Copyright (c) 2015, 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 "Tcg2ConfigImpl.h"
+#include <Library/PcdLib.h>
+#include <Library/Tpm2CommandLib.h>
+#include <Guid/TpmInstance.h>
+
+#define EFI_TCG2_EVENT_LOG_FORMAT_ALL (EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2 | EFI_TCG2_EVENT_LOG_FORMAT_TCG_2)
+
+TPM_INSTANCE_ID mTpmInstanceId[TPM_DEVICE_MAX + 1] = TPM_INSTANCE_ID_LIST;
+
+TCG2_CONFIG_PRIVATE_DATA *mTcg2ConfigPrivateDate;
+TCG2_CONFIG_PRIVATE_DATA mTcg2ConfigPrivateDateTemplate = {
+ TCG2_CONFIG_PRIVATE_DATA_SIGNATURE,
+ {
+ Tcg2ExtractConfig,
+ Tcg2RouteConfig,
+ Tcg2Callback
+ }
+};
+
+HII_VENDOR_DEVICE_PATH mTcg2HiiVendorDevicePath = {
+ {
+ {
+ HARDWARE_DEVICE_PATH,
+ HW_VENDOR_DP,
+ {
+ (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
+ (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
+ }
+ },
+ TCG2_CONFIG_FORM_SET_GUID
+ },
+ {
+ END_DEVICE_PATH_TYPE,
+ END_ENTIRE_DEVICE_PATH_SUBTYPE,
+ {
+ (UINT8) (END_DEVICE_PATH_LENGTH),
+ (UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
+ }
+ }
+};
+
+UINT8 mCurrentPpRequest;
+
+/**
+ This function allows a caller to extract the current configuration for one
+ or more named elements from the target driver.
+
+ @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
+ @param[in] Request A null-terminated Unicode string in
+ <ConfigRequest> format.
+ @param[out] Progress On return, points to a character in the Request
+ string. Points to the string's null terminator if
+ request was successful. Points to the most recent
+ '&' before the first failing name/value pair (or
+ the beginning of the string if the failure is in
+ the first name/value pair) if the request was not
+ successful.
+ @param[out] Results A null-terminated Unicode string in
+ <ConfigAltResp> format which has all values filled
+ in for the names in the Request string. String to
+ be allocated by the called function.
+
+ @retval EFI_SUCCESS The Results is filled with the requested values.
+ @retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.
+ @retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.
+ @retval EFI_NOT_FOUND Routing data doesn't match any storage in this
+ driver.
+
+**/
+EFI_STATUS
+EFIAPI
+Tcg2ExtractConfig (
+ IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
+ IN CONST EFI_STRING Request,
+ OUT EFI_STRING *Progress,
+ OUT EFI_STRING *Results
+ )
+{
+ if (Progress == NULL || Results == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *Progress = Request;
+ return EFI_NOT_FOUND;
+}
+
+/**
+ Save TPM request to variable space.
+
+ @param[in] PpRequest Physical Presence request command.
+
+ @retval EFI_SUCCESS The operation is finished successfully.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+SaveTcg2PpRequest (
+ IN UINT8 PpRequest
+ )
+{
+ UINT32 ReturnCode;
+ EFI_STATUS Status;
+
+ ReturnCode = Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (PpRequest, 0);
+ if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS) {
+ mCurrentPpRequest = PpRequest;
+ Status = EFI_SUCCESS;
+ } else if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE) {
+ Status = EFI_OUT_OF_RESOURCES;
+ } else if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED) {
+ Status = EFI_UNSUPPORTED;
+ } else {
+ Status = EFI_DEVICE_ERROR;
+ }
+
+ return Status;
+}
+
+/**
+ Save TPM request to variable space.
+
+ @param[in] PpRequestParameter Physical Presence request parameter.
+
+ @retval EFI_SUCCESS The operation is finished successfully.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+SaveTcg2PpRequestParameter (
+ IN UINT32 PpRequestParameter
+ )
+{
+ UINT32 ReturnCode;
+ EFI_STATUS Status;
+
+ ReturnCode = Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (mCurrentPpRequest, PpRequestParameter);
+ if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS) {
+ Status = EFI_SUCCESS;
+ } else if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE) {
+ Status = EFI_OUT_OF_RESOURCES;
+ } else if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED) {
+ Status = EFI_UNSUPPORTED;
+ } else {
+ Status = EFI_DEVICE_ERROR;
+ }
+
+ return Status;
+}
+
+/**
+ Save Tcg2 PCR Banks request request to variable space.
+
+ @param[in] PCRBankIndex PCR Bank Index.
+ @param[in] Enable Enable or disable this PCR Bank.
+
+ @retval EFI_SUCCESS The operation is finished successfully.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+SaveTcg2PCRBanksRequest (
+ IN UINTN PCRBankIndex,
+ IN BOOLEAN Enable
+ )
+{
+ UINT32 ReturnCode;
+ EFI_STATUS Status;
+
+ if (Enable) {
+ mTcg2ConfigPrivateDate->PCRBanksDesired |= (0x1 << PCRBankIndex);
+ } else {
+ mTcg2ConfigPrivateDate->PCRBanksDesired &= ~(0x1 << PCRBankIndex);
+ }
+
+ ReturnCode = Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS, mTcg2ConfigPrivateDate->PCRBanksDesired);
+ if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS) {
+ Status = EFI_SUCCESS;
+ } else if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE) {
+ Status = EFI_OUT_OF_RESOURCES;
+ } else if (ReturnCode == TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED) {
+ Status = EFI_UNSUPPORTED;
+ } else {
+ Status = EFI_DEVICE_ERROR;
+ }
+
+ return Status;
+}
+
+/**
+ This function processes the results of changes in configuration.
+
+ @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
+ @param[in] Configuration A null-terminated Unicode string in <ConfigResp>
+ format.
+ @param[out] Progress A pointer to a string filled in with the offset of
+ the most recent '&' before the first failing
+ name/value pair (or the beginning of the string if
+ the failure is in the first name/value pair) or
+ the terminating NULL if all was successful.
+
+ @retval EFI_SUCCESS The Results is processed successfully.
+ @retval EFI_INVALID_PARAMETER Configuration is NULL.
+ @retval EFI_NOT_FOUND Routing data doesn't match any storage in this
+ driver.
+
+**/
+EFI_STATUS
+EFIAPI
+Tcg2RouteConfig (
+ IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
+ IN CONST EFI_STRING Configuration,
+ OUT EFI_STRING *Progress
+ )
+{
+ if (Configuration == NULL || Progress == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return EFI_NOT_FOUND;
+}
+
+/**
+ This function processes the results of changes in configuration.
+
+ @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
+ @param[in] Action Specifies the type of action taken by the browser.
+ @param[in] QuestionId A unique value which is sent to the original
+ exporting driver so that it can identify the type
+ of data to expect.
+ @param[in] Type The type of value for the question.
+ @param[in] Value A pointer to the data being sent to the original
+ exporting driver.
+ @param[out] ActionRequest On return, points to the action requested by the
+ callback function.
+
+ @retval EFI_SUCCESS The callback successfully handled the action.
+ @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
+ variable and its data.
+ @retval EFI_DEVICE_ERROR The variable could not be saved.
+ @retval EFI_UNSUPPORTED The specified Action is not supported by the
+ callback.
+
+**/
+EFI_STATUS
+EFIAPI
+Tcg2Callback (
+ IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
+ IN EFI_BROWSER_ACTION Action,
+ IN EFI_QUESTION_ID QuestionId,
+ IN UINT8 Type,
+ IN EFI_IFR_TYPE_VALUE *Value,
+ OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
+ )
+{
+ if ((This == NULL) || (Value == NULL) || (ActionRequest == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Action == EFI_BROWSER_ACTION_CHANGED) {
+ if (QuestionId == KEY_TPM_DEVICE) {
+ return EFI_SUCCESS;
+ }
+ if (QuestionId == KEY_TPM2_OPERATION) {
+ return SaveTcg2PpRequest (Value->u8);
+ }
+ if (QuestionId == KEY_TPM2_OPERATION_PARAMETER) {
+ return SaveTcg2PpRequestParameter (Value->u32);
+ }
+ if ((QuestionId >= KEY_TPM2_PCR_BANKS_REQUEST_0) && (QuestionId <= KEY_TPM2_PCR_BANKS_REQUEST_4)) {
+ SaveTcg2PCRBanksRequest (QuestionId - KEY_TPM2_PCR_BANKS_REQUEST_0, Value->b);
+ }
+ }
+
+ return EFI_UNSUPPORTED;
+}
+
+/**
+ Append Buffer With TpmAlgHash.
+
+ @param[in] Buffer Buffer to be appended.
+ @param[in] BufferSize Size of buffer.
+ @param[in] TpmAlgHash TpmAlgHash.
+
+**/
+VOID
+AppendBufferWithTpmAlgHash (
+ IN UINT16 *Buffer,
+ IN UINTN BufferSize,
+ IN UINT32 TpmAlgHash
+ )
+{
+ switch (TpmAlgHash) {
+ case TPM_ALG_SHA1:
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SHA1", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ break;
+ case TPM_ALG_SHA256:
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SHA256", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ break;
+ case TPM_ALG_SHA384:
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SHA384", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ break;
+ case TPM_ALG_SHA512:
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SHA512", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ break;
+ case TPM_ALG_SM3_256:
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SM3_256", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ break;
+ }
+}
+
+/**
+ Fill Buffer With BootHashAlg.
+
+ @param[in] Buffer Buffer to be filled.
+ @param[in] BufferSize Size of buffer.
+ @param[in] BootHashAlg BootHashAlg.
+
+**/
+VOID
+FillBufferWithBootHashAlg (
+ IN UINT16 *Buffer,
+ IN UINTN BufferSize,
+ IN UINT32 BootHashAlg
+ )
+{
+ Buffer[0] = 0;
+ if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA1) != 0) {
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SHA1", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA256) != 0) {
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SHA256", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA384) != 0) {
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SHA384", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA512) != 0) {
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SHA512", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SM3_256) != 0) {
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"SM3_256", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+}
+
+/**
+ Fill Buffer With TCG2EventLogFormat.
+
+ @param[in] Buffer Buffer to be filled.
+ @param[in] BufferSize Size of buffer.
+ @param[in] TCG2EventLogFormat TCG2EventLogFormat.
+
+**/
+VOID
+FillBufferWithTCG2EventLogFormat (
+ IN UINT16 *Buffer,
+ IN UINTN BufferSize,
+ IN UINT32 TCG2EventLogFormat
+ )
+{
+ Buffer[0] = 0;
+ if ((TCG2EventLogFormat & EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2) != 0) {
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"TCG_1_2", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ if ((TCG2EventLogFormat & EFI_TCG2_EVENT_LOG_FORMAT_TCG_2) != 0) {
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"TCG_2", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ if ((TCG2EventLogFormat & (~EFI_TCG2_EVENT_LOG_FORMAT_ALL)) != 0) {
+ if (Buffer[0] != 0) {
+ StrnCat (Buffer, L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+ StrnCat (Buffer, L"UNKNOWN", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);
+ }
+}
+
+/**
+ Check if buffer is all zero.
+
+ @param[in] Buffer Buffer to be checked.
+ @param[in] BufferSize Size of buffer to be checked.
+
+ @retval TRUE Buffer is all zero.
+ @retval FALSE Buffer is not all zero.
+**/
+BOOLEAN
+IsZeroBuffer (
+ IN VOID *Buffer,
+ IN UINTN BufferSize
+ )
+{
+ UINT8 *BufferData;
+ UINTN Index;
+
+ BufferData = Buffer;
+ for (Index = 0; Index < BufferSize; Index++) {
+ if (BufferData[Index] != 0) {
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
+
+/**
+ This function publish the TCG2 configuration Form for TPM device.
+
+ @param[in, out] PrivateData Points to TCG2 configuration private data.
+
+ @retval EFI_SUCCESS HII Form is installed for this network device.
+ @retval EFI_OUT_OF_RESOURCES Not enough resource for HII Form installation.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+InstallTcg2ConfigForm (
+ IN OUT TCG2_CONFIG_PRIVATE_DATA *PrivateData
+ )
+{
+ EFI_STATUS Status;
+ EFI_HII_HANDLE HiiHandle;
+ EFI_HANDLE DriverHandle;
+ EFI_HII_CONFIG_ACCESS_PROTOCOL *ConfigAccess;
+ UINTN Index;
+ TPML_PCR_SELECTION Pcrs;
+ CHAR16 TempBuffer[1024];
+
+ DriverHandle = NULL;
+ ConfigAccess = &PrivateData->ConfigAccess;
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &DriverHandle,
+ &gEfiDevicePathProtocolGuid,
+ &mTcg2HiiVendorDevicePath,
+ &gEfiHiiConfigAccessProtocolGuid,
+ ConfigAccess,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ PrivateData->DriverHandle = DriverHandle;
+
+ //
+ // Publish the HII package list
+ //
+ HiiHandle = HiiAddPackages (
+ &gTcg2ConfigFormSetGuid,
+ DriverHandle,
+ Tcg2ConfigDxeStrings,
+ Tcg2ConfigBin,
+ NULL
+ );
+ if (HiiHandle == NULL) {
+ gBS->UninstallMultipleProtocolInterfaces (
+ DriverHandle,
+ &gEfiDevicePathProtocolGuid,
+ &mTcg2HiiVendorDevicePath,
+ &gEfiHiiConfigAccessProtocolGuid,
+ ConfigAccess,
+ NULL
+ );
+
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ PrivateData->HiiHandle = HiiHandle;
+
+ //
+ // Update static data
+ //
+ switch (PrivateData->TpmDeviceDetected) {
+ case TPM_DEVICE_NULL:
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TCG2_DEVICE_STATE_CONTENT), L"Not Found", NULL);
+ break;
+ case TPM_DEVICE_1_2:
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TCG2_DEVICE_STATE_CONTENT), L"TPM 1.2", NULL);
+ break;
+ case TPM_DEVICE_2_0_DTPM:
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TCG2_DEVICE_STATE_CONTENT), L"TPM 2.0 (DTPM)", NULL);
+ break;
+ default:
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TCG2_DEVICE_STATE_CONTENT), L"Unknown", NULL);
+ break;
+ }
+
+ Status = Tpm2GetCapabilityPcrs (&Pcrs);
+ if (EFI_ERROR (Status)) {
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TPM2_ACTIVE_HASH_ALGO_CONTENT), L"[Unknown]", NULL);
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TPM2_SUPPORTED_HASH_ALGO_CONTENT), L"[Unknown]", NULL);
+ } else {
+ TempBuffer[0] = 0;
+ for (Index = 0; Index < Pcrs.count; Index++) {
+ if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {
+ AppendBufferWithTpmAlgHash (TempBuffer, sizeof(TempBuffer), Pcrs.pcrSelections[Index].hash);
+ }
+ }
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TPM2_ACTIVE_HASH_ALGO_CONTENT), TempBuffer, NULL);
+
+ TempBuffer[0] = 0;
+ for (Index = 0; Index < Pcrs.count; Index++) {
+ AppendBufferWithTpmAlgHash (TempBuffer, sizeof(TempBuffer), Pcrs.pcrSelections[Index].hash);
+ }
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TPM2_SUPPORTED_HASH_ALGO_CONTENT), TempBuffer, NULL);
+ }
+
+ FillBufferWithBootHashAlg (TempBuffer, sizeof(TempBuffer), PcdGet32 (PcdTcg2HashAlgorithmBitmap));
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_BIOS_HASH_ALGO_CONTENT), TempBuffer, NULL);
+
+ //
+ // Tcg2 Capability
+ //
+ FillBufferWithTCG2EventLogFormat (TempBuffer, sizeof(TempBuffer), PrivateData->ProtocolCapability.SupportedEventLogs);
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TCG2_SUPPORTED_EVENT_LOG_FORMAT_CONTENT), TempBuffer, NULL);
+
+ FillBufferWithBootHashAlg (TempBuffer, sizeof(TempBuffer), PrivateData->ProtocolCapability.HashAlgorithmBitmap);
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TCG2_HASH_ALGO_BITMAP_CONTENT), TempBuffer, NULL);
+
+ UnicodeSPrint (TempBuffer, sizeof (TempBuffer), L"%d", PrivateData->ProtocolCapability.NumberOfPCRBanks);
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TCG2_NUMBER_OF_PCR_BANKS_CONTENT), TempBuffer, NULL);
+
+ FillBufferWithBootHashAlg (TempBuffer, sizeof(TempBuffer), PrivateData->ProtocolCapability.ActivePcrBanks);
+ HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TCG2_ACTIVE_PCR_BANKS_CONTENT), TempBuffer, NULL);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ This function removes TCG2 configuration Form.
+
+ @param[in, out] PrivateData Points to TCG2 configuration private data.
+
+**/
+VOID
+UninstallTcg2ConfigForm (
+ IN OUT TCG2_CONFIG_PRIVATE_DATA *PrivateData
+ )
+{
+ //
+ // Uninstall HII package list
+ //
+ if (PrivateData->HiiHandle != NULL) {
+ HiiRemovePackages (PrivateData->HiiHandle);
+ PrivateData->HiiHandle = NULL;
+ }
+
+ //
+ // Uninstall HII Config Access Protocol
+ //
+ if (PrivateData->DriverHandle != NULL) {
+ gBS->UninstallMultipleProtocolInterfaces (
+ PrivateData->DriverHandle,
+ &gEfiDevicePathProtocolGuid,
+ &mTcg2HiiVendorDevicePath,
+ &gEfiHiiConfigAccessProtocolGuid,
+ &PrivateData->ConfigAccess,
+ NULL
+ );
+ PrivateData->DriverHandle = NULL;
+ }
+
+ FreePool (PrivateData);
+}
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