SecurityPkg/TrEEPhysicalPresenceLib: remove TrEE.

TrEE is deprecated. We need use Tcg2.

Cc: Chao B Zhang <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Chao B Zhang <chao.b.zhang@intel.com>

4 files changed, 0 insertions, 868 deletions

diff --git a/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.c b/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.c
deleted file mode 100644
index 31b02d9..0000000
--- a/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.c
+++ /dev/null
@@ -1,743 +0,0 @@
-/** @file

-  Execute pending TPM2 requests from OS or BIOS.

-

-  Caution: This module requires additional review when modified.

-  This driver will have external input - variable.

-  This external input must be validated carefully to avoid security issue.

-

-  TrEEExecutePendingTpmRequest() will receive untrusted input and do validation.

-

-Copyright (c) 2013 - 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 <PiDxe.h>

-

-#include <Protocol/TrEEProtocol.h>

-#include <Protocol/VariableLock.h>

-#include <Library/DebugLib.h>

-#include <Library/BaseMemoryLib.h>

-#include <Library/UefiRuntimeServicesTableLib.h>

-#include <Library/UefiDriverEntryPoint.h>

-#include <Library/UefiBootServicesTableLib.h>

-#include <Library/UefiLib.h>

-#include <Library/MemoryAllocationLib.h>

-#include <Library/PrintLib.h>

-#include <Library/HiiLib.h>

-#include <Guid/EventGroup.h>

-#include <Guid/TrEEPhysicalPresenceData.h>

-#include <Library/Tpm2CommandLib.h>

-#include <Library/TrEEPpVendorLib.h>

-

-#define CONFIRM_BUFFER_SIZE         4096

-

-EFI_HII_HANDLE mTrEEPpStringPackHandle;

-

-/**

-  Get string by string id from HII Interface.

-

-  @param[in] Id          String ID.

-

-  @retval    CHAR16 *    String from ID.

-  @retval    NULL        If error occurs.

-

-**/

-CHAR16 *

-TrEEPhysicalPresenceGetStringById (

-  IN  EFI_STRING_ID   Id

-  )

-{

-  return HiiGetString (mTrEEPpStringPackHandle, Id, NULL);

-}

-

-/**

-  Send ClearControl and Clear command to TPM.

-

-  @param[in]  PlatformAuth      platform auth value. NULL means no platform auth change.

-

-  @retval EFI_SUCCESS           Operation completed successfully.

-  @retval EFI_TIMEOUT           The register can't run into the expected status in time.

-  @retval EFI_BUFFER_TOO_SMALL  Response data buffer is too small.

-  @retval EFI_DEVICE_ERROR      Unexpected device behavior.

-

-**/

-EFI_STATUS

-EFIAPI

-TpmCommandClear (

-  IN TPM2B_AUTH                *PlatformAuth  OPTIONAL

-  )

-{

-  EFI_STATUS                Status;

-  TPMS_AUTH_COMMAND         *AuthSession;

-  TPMS_AUTH_COMMAND         LocalAuthSession;

-

-  if (PlatformAuth == NULL) {

-    AuthSession = NULL;

-  } else {

-    AuthSession = &LocalAuthSession;

-    ZeroMem (&LocalAuthSession, sizeof(LocalAuthSession));

-    LocalAuthSession.sessionHandle = TPM_RS_PW;

-    LocalAuthSession.hmac.size = PlatformAuth->size;

-    CopyMem (LocalAuthSession.hmac.buffer, PlatformAuth->buffer, PlatformAuth->size);

-  }

-

-  DEBUG ((EFI_D_INFO, "Tpm2ClearControl ... \n"));

-  Status = Tpm2ClearControl (TPM_RH_PLATFORM, AuthSession, NO);

-  DEBUG ((EFI_D_INFO, "Tpm2ClearControl - %r\n", Status));

-  if (EFI_ERROR (Status)) {

-    goto Done;

-  }

-  DEBUG ((EFI_D_INFO, "Tpm2Clear ... \n"));

-  Status = Tpm2Clear (TPM_RH_PLATFORM, AuthSession);

-  DEBUG ((EFI_D_INFO, "Tpm2Clear - %r\n", Status));

-

-Done:

-  ZeroMem (&LocalAuthSession.hmac, sizeof(LocalAuthSession.hmac));

-  return Status;

-}

-

-/**

-  Execute physical presence operation requested by the OS.

-

-  @param[in]      PlatformAuth        platform auth value. NULL means no platform auth change.

-  @param[in]      CommandCode         Physical presence operation value.

-  @param[in, out] PpiFlags            The physical presence interface flags.

-  

-  @retval TREE_PP_OPERATION_RESPONSE_BIOS_FAILURE  Unknown physical presence operation.

-  @retval TREE_PP_OPERATION_RESPONSE_BIOS_FAILURE  Error occurred during sending command to TPM or 

-                                                   receiving response from TPM.

-  @retval Others                                   Return code from the TPM device after command execution.

-**/

-UINT32

-TrEEExecutePhysicalPresence (

-  IN      TPM2B_AUTH                       *PlatformAuth,  OPTIONAL

-  IN      UINT32                           CommandCode,

-  IN OUT  EFI_TREE_PHYSICAL_PRESENCE_FLAGS *PpiFlags

-  )

-{

-  EFI_STATUS  Status;

-

-  switch (CommandCode) {

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_2:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_3:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_4:

-      Status = TpmCommandClear (PlatformAuth);

-      if (EFI_ERROR (Status)) {

-        return TREE_PP_OPERATION_RESPONSE_BIOS_FAILURE;

-      } else {

-        return TREE_PP_OPERATION_RESPONSE_SUCCESS;

-      }

-

-    case TREE_PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:

-      PpiFlags->PPFlags &= ~TREE_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR;

-      return TREE_PP_OPERATION_RESPONSE_SUCCESS;

-

-    case TREE_PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:

-      PpiFlags->PPFlags |= TREE_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR;

-      return TREE_PP_OPERATION_RESPONSE_SUCCESS;

-

-    default:

-      if (CommandCode <= TREE_PHYSICAL_PRESENCE_NO_ACTION_MAX) {

-        return TREE_PP_OPERATION_RESPONSE_SUCCESS;

-      } else {

-        return TREE_PP_OPERATION_RESPONSE_BIOS_FAILURE;

-      }

-  }

-}

-

-

-/**

-  Read the specified key for user confirmation.

-

-  @param[in]  CautionKey  If true,  F12 is used as confirm key;

-                          If false, F10 is used as confirm key.

-

-  @retval     TRUE        User confirmed the changes by input.

-  @retval     FALSE       User discarded the changes.

-**/

-BOOLEAN

-TrEEReadUserKey (

-  IN     BOOLEAN                    CautionKey

-  )

-{

-  EFI_STATUS                        Status;

-  EFI_INPUT_KEY                     Key;

-  UINT16                            InputKey;

-      

-  InputKey = 0; 

-  do {

-    Status = gBS->CheckEvent (gST->ConIn->WaitForKey);

-    if (!EFI_ERROR (Status)) {

-      Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);

-      if (Key.ScanCode == SCAN_ESC) {

-        InputKey = Key.ScanCode;

-      }

-      if ((Key.ScanCode == SCAN_F10) && !CautionKey) {

-        InputKey = Key.ScanCode;

-      }

-      if ((Key.ScanCode == SCAN_F12) && CautionKey) {

-        InputKey = Key.ScanCode;

-      }

-    }      

-  } while (InputKey == 0);

-

-  if (InputKey != SCAN_ESC) {

-    return TRUE;

-  }

-  

-  return FALSE;

-}

-

-/**

-  The constructor function register UNI strings into imageHandle.

-  

-  It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. 

-

-  @param  ImageHandle   The firmware allocated handle for the EFI image.

-  @param  SystemTable   A pointer to the EFI System Table.

-  

-  @retval EFI_SUCCESS   The constructor successfully added string package.

-  @retval Other value   The constructor can't add string package.

-**/

-EFI_STATUS

-EFIAPI

-TrEEPhysicalPresenceLibConstructor (

-  IN EFI_HANDLE        ImageHandle,

-  IN EFI_SYSTEM_TABLE  *SystemTable

-  )

-{

-  mTrEEPpStringPackHandle = HiiAddPackages (&gEfiTrEEPhysicalPresenceGuid, ImageHandle, DxeTrEEPhysicalPresenceLibStrings, NULL);

-  ASSERT (mTrEEPpStringPackHandle != NULL);

-

-  return EFI_SUCCESS;

-}

-

-/**

-  Display the confirm text and get user confirmation.

-

-  @param[in] TpmPpCommand  The requested TPM physical presence command.

-

-  @retval    TRUE          The user has confirmed the changes.

-  @retval    FALSE         The user doesn't confirm the changes.

-**/

-BOOLEAN

-TrEEUserConfirm (

-  IN      UINT32                    TpmPpCommand

-  )

-{

-  CHAR16                            *ConfirmText;

-  CHAR16                            *TmpStr1;

-  CHAR16                            *TmpStr2; 

-  UINTN                             BufSize;

-  BOOLEAN                           CautionKey;

-  UINT16                            Index;

-  CHAR16                            DstStr[81];

-    

-  TmpStr2     = NULL;

-  CautionKey  = FALSE;

-  BufSize     = CONFIRM_BUFFER_SIZE;

-  ConfirmText = AllocateZeroPool (BufSize);

-  ASSERT (ConfirmText != NULL);

-

-  switch (TpmPpCommand) {

-

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_2:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_3:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_4:

-      CautionKey = TRUE;

-      TmpStr2 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));

-

-      TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));

-      UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);

-      FreePool (TmpStr1);

-

-      TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));

-      StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);

-      StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n\n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);

-      FreePool (TmpStr1);      

-

-      TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));

-      StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);

-      FreePool (TmpStr1);

-      break;

-

-    case TREE_PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:

-      CautionKey = TRUE;

-      TmpStr2 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));

-

-      TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));

-      UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);

-      FreePool (TmpStr1);

-

-      TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_CLEAR));

-      StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);

-      FreePool (TmpStr1);

-

-      TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));

-      StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);

-      StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n\n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);

-      FreePool (TmpStr1); 

-

-      TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));

-      StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);

-      FreePool (TmpStr1);

-

-      TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));

-      StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);

-      FreePool (TmpStr1);

-      break;

-

-    default:

-      ;

-  }

-

-  if (TmpStr2 == NULL) {

-    FreePool (ConfirmText);

-    return FALSE;

-  }

-

-  TmpStr1 = TrEEPhysicalPresenceGetStringById (STRING_TOKEN (TPM_REJECT_KEY));

-  BufSize -= StrSize (ConfirmText);

-  UnicodeSPrint (ConfirmText + StrLen (ConfirmText), BufSize, TmpStr1, TmpStr2);

-

-  DstStr[80] = L'\0';

-  for (Index = 0; Index < StrLen (ConfirmText); Index += 80) {

-    StrnCpyS(DstStr, sizeof (DstStr) / sizeof (CHAR16), ConfirmText + Index, sizeof (DstStr) / sizeof (CHAR16) - 1);    

-    Print (DstStr);    

-  }

-  

-  FreePool (TmpStr1);

-  FreePool (TmpStr2);

-  FreePool (ConfirmText);

-

-  if (TrEEReadUserKey (CautionKey)) {

-    return TRUE;

-  }

-

-  return FALSE;  

-}

-

-/**

-  Check if there is a valid physical presence command request. Also updates parameter value 

-  to whether the requested physical presence command already confirmed by user

- 

-   @param[in]  TcgPpData                 EFI TrEE Physical Presence request data. 

-   @param[in]  Flags                     The physical presence interface flags.

-   @param[out] RequestConfirmed            If the physical presence operation command required user confirm from UI.

-                                             True, it indicates the command doesn't require user confirm, or already confirmed 

-                                                   in last boot cycle by user.

-                                             False, it indicates the command need user confirm from UI.

-

-   @retval  TRUE        Physical Presence operation command is valid.

-   @retval  FALSE       Physical Presence operation command is invalid.

-

-**/

-BOOLEAN

-TrEEHaveValidTpmRequest  (

-  IN      EFI_TREE_PHYSICAL_PRESENCE       *TcgPpData,

-  IN      EFI_TREE_PHYSICAL_PRESENCE_FLAGS Flags,

-  OUT     BOOLEAN                          *RequestConfirmed

-  )

-{

-  BOOLEAN  IsRequestValid;

-

-  *RequestConfirmed = FALSE;

-

-  switch (TcgPpData->PPRequest) {

-    case TREE_PHYSICAL_PRESENCE_NO_ACTION:

-      *RequestConfirmed = TRUE;

-      return TRUE;

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_2:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_3:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_4:

-      if ((Flags.PPFlags & TREE_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR) != 0) {

-        *RequestConfirmed = TRUE;

-      }

-      break;

-

-    case TREE_PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:

-      *RequestConfirmed = TRUE;

-      break;

-

-    case TREE_PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:

-      break;

-

-    default:

-      if (TcgPpData->PPRequest >= TREE_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

-        IsRequestValid = TrEEPpVendorLibHasValidRequest (TcgPpData->PPRequest, Flags.PPFlags, RequestConfirmed);

-        if (!IsRequestValid) {

-          return FALSE;

-        } else {

-          break;

-        }

-      } else {

-        //

-        // Wrong Physical Presence command

-        //

-        return FALSE;

-      }

-  }

-

-  if ((Flags.PPFlags & TREE_VENDOR_LIB_FLAG_RESET_TRACK) != 0) {

-    //

-    // It had been confirmed in last boot, it doesn't need confirm again.

-    //

-    *RequestConfirmed = TRUE;

-  }

-

-  //

-  // Physical Presence command is correct

-  //

-  return TRUE;

-}

-

-

-/**

-  Check and execute the requested physical presence command.

-

-  Caution: This function may receive untrusted input.

-  TcgPpData variable is external input, so this function will validate

-  its data structure to be valid value.

-

-  @param[in] PlatformAuth         platform auth value. NULL means no platform auth change.

-  @param[in] TcgPpData            Point to the physical presence NV variable.

-  @param[in] Flags                The physical presence interface flags.

-**/

-VOID

-TrEEExecutePendingTpmRequest (

-  IN      TPM2B_AUTH                       *PlatformAuth,  OPTIONAL

-  IN      EFI_TREE_PHYSICAL_PRESENCE       *TcgPpData,

-  IN      EFI_TREE_PHYSICAL_PRESENCE_FLAGS Flags

-  )

-{

-  EFI_STATUS                        Status;

-  UINTN                             DataSize;

-  BOOLEAN                           RequestConfirmed;

-  EFI_TREE_PHYSICAL_PRESENCE_FLAGS  NewFlags;

-  BOOLEAN                           ResetRequired;

-  UINT32                            NewPPFlags;

-

-  if (TcgPpData->PPRequest == TREE_PHYSICAL_PRESENCE_NO_ACTION) {

-    //

-    // No operation request

-    //

-    return;

-  }

-

-  if (!TrEEHaveValidTpmRequest(TcgPpData, Flags, &RequestConfirmed)) {

-    //

-    // Invalid operation request.

-    //

-    if (TcgPpData->PPRequest <= TREE_PHYSICAL_PRESENCE_NO_ACTION_MAX) {

-      TcgPpData->PPResponse = TREE_PP_OPERATION_RESPONSE_SUCCESS;

-    } else {

-      TcgPpData->PPResponse = TREE_PP_OPERATION_RESPONSE_BIOS_FAILURE;

-    }

-    TcgPpData->LastPPRequest = TcgPpData->PPRequest;

-    TcgPpData->PPRequest = TREE_PHYSICAL_PRESENCE_NO_ACTION;

-    DataSize = sizeof (EFI_TREE_PHYSICAL_PRESENCE);

-    Status = gRT->SetVariable (

-                    TREE_PHYSICAL_PRESENCE_VARIABLE,

-                    &gEfiTrEEPhysicalPresenceGuid,

-                    EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,

-                    DataSize,

-                    TcgPpData

-                    );

-    return;

-  }

-

-  ResetRequired = FALSE;

-  if (TcgPpData->PPRequest >= TREE_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

-    NewFlags = Flags;

-    NewPPFlags = NewFlags.PPFlags;

-    TcgPpData->PPResponse = TrEEPpVendorLibExecutePendingRequest (PlatformAuth, TcgPpData->PPRequest, &NewPPFlags, &ResetRequired);

-    NewFlags.PPFlags = (UINT8)NewPPFlags;

-  } else {

-    if (!RequestConfirmed) {

-      //

-      // Print confirm text and wait for approval. 

-      //

-      RequestConfirmed = TrEEUserConfirm (TcgPpData->PPRequest

-                                          );

-    }

-

-    //

-    // Execute requested physical presence command

-    //

-    TcgPpData->PPResponse = TREE_PP_OPERATION_RESPONSE_USER_ABORT;

-    NewFlags = Flags;

-    if (RequestConfirmed) {

-      TcgPpData->PPResponse = TrEEExecutePhysicalPresence (PlatformAuth, TcgPpData->PPRequest, 

-                                                           &NewFlags);

-    }

-  }

-

-  //

-  // Save the flags if it is updated.

-  //

-  if (CompareMem (&Flags, &NewFlags, sizeof(EFI_TREE_PHYSICAL_PRESENCE_FLAGS)) != 0) {

-    Status   = gRT->SetVariable (

-                      TREE_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

-                      &gEfiTrEEPhysicalPresenceGuid,

-                      EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,

-                      sizeof (EFI_TREE_PHYSICAL_PRESENCE_FLAGS),

-                      &NewFlags

-                      ); 

-  }

-

-  //

-  // Clear request

-  //

-  if ((NewFlags.PPFlags & TREE_VENDOR_LIB_FLAG_RESET_TRACK) == 0) {

-    TcgPpData->LastPPRequest = TcgPpData->PPRequest;

-    TcgPpData->PPRequest = TREE_PHYSICAL_PRESENCE_NO_ACTION;    

-  }

-

-  //

-  // Save changes

-  //

-  DataSize = sizeof (EFI_TREE_PHYSICAL_PRESENCE);

-  Status = gRT->SetVariable (

-                  TREE_PHYSICAL_PRESENCE_VARIABLE,

-                  &gEfiTrEEPhysicalPresenceGuid,

-                  EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,

-                  DataSize,

-                  TcgPpData

-                  );

-  if (EFI_ERROR (Status)) {

-    return;

-  }

-

-  if (TcgPpData->PPResponse == TREE_PP_OPERATION_RESPONSE_USER_ABORT) {

-    return;

-  }

-

-  //

-  // Reset system to make new TPM settings in effect

-  //

-  switch (TcgPpData->LastPPRequest) {

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_2:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_3:

-    case TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_4:

-      break;

-    default:

-      if (TcgPpData->LastPPRequest >= TREE_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

-        if (ResetRequired) {

-          break;

-        } else {

-          return ;

-        }

-      }

-      if (TcgPpData->PPRequest != TREE_PHYSICAL_PRESENCE_NO_ACTION) {

-        break;

-      }

-      return;

-  }

-

-  Print (L"Rebooting system to make TPM2 settings in effect\n");

-  gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);

-  ASSERT (FALSE);  

-}

-

-/**

-  Check and execute the pending TPM request.

-

-  The TPM request may come from OS or BIOS. This API will display request information and wait 

-  for user confirmation if TPM request exists. The TPM request will be sent to TPM device after

-  the TPM request is confirmed, and one or more reset may be required to make TPM request to 

-  take effect.

-  

-  This API should be invoked after console in and console out are all ready as they are required

-  to display request information and get user input to confirm the request.  

-

-  @param[in]  PlatformAuth                   platform auth value. NULL means no platform auth change.

-**/

-VOID

-EFIAPI

-TrEEPhysicalPresenceLibProcessRequest (

-  IN      TPM2B_AUTH                     *PlatformAuth  OPTIONAL

-  )

-{

-  EFI_STATUS                        Status;

-  UINTN                             DataSize;

-  EFI_TREE_PHYSICAL_PRESENCE        TcgPpData;

-  EFI_TREE_PROTOCOL                 *TreeProtocol;

-  EDKII_VARIABLE_LOCK_PROTOCOL      *VariableLockProtocol;

-  EFI_TREE_PHYSICAL_PRESENCE_FLAGS  PpiFlags;

-

-  Status = gBS->LocateProtocol (&gEfiTrEEProtocolGuid, NULL, (VOID **) &TreeProtocol);

-  if (EFI_ERROR (Status)) {

-    return ;

-  }

-

-  //

-  // Initialize physical presence flags.

-  //

-  DataSize = sizeof (EFI_TREE_PHYSICAL_PRESENCE_FLAGS);

-  Status = gRT->GetVariable (

-                  TREE_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

-                  &gEfiTrEEPhysicalPresenceGuid,

-                  NULL,

-                  &DataSize,

-                  &PpiFlags

-                  );

-  if (EFI_ERROR (Status)) {

-    PpiFlags.PPFlags = 0;

-    Status   = gRT->SetVariable (

-                      TREE_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

-                      &gEfiTrEEPhysicalPresenceGuid,

-                      EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,

-                      sizeof (EFI_TREE_PHYSICAL_PRESENCE_FLAGS),

-                      &PpiFlags

-                      );

-    if (EFI_ERROR (Status)) {

-      DEBUG ((EFI_D_ERROR, "[TPM2] Set physical presence flag failed, Status = %r\n", Status));

-      return ;

-    }

-  }

-  DEBUG ((EFI_D_INFO, "[TPM2] PpiFlags = %x\n", PpiFlags.PPFlags));

-

-  //

-  // This flags variable controls whether physical presence is required for TPM command. 

-  // It should be protected from malicious software. We set it as read-only variable here.

-  //

-  Status = gBS->LocateProtocol (&gEdkiiVariableLockProtocolGuid, NULL, (VOID **)&VariableLockProtocol);

-  if (!EFI_ERROR (Status)) {

-    Status = VariableLockProtocol->RequestToLock (

-                                     VariableLockProtocol,

-                                     TREE_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

-                                     &gEfiTrEEPhysicalPresenceGuid

-                                     );

-    if (EFI_ERROR (Status)) {

-      DEBUG ((EFI_D_ERROR, "[TPM2] Error when lock variable %s, Status = %r\n", TREE_PHYSICAL_PRESENCE_FLAGS_VARIABLE, Status));

-      ASSERT_EFI_ERROR (Status);

-    }

-  }

-  

-  //

-  // Initialize physical presence variable.

-  //

-  DataSize = sizeof (EFI_TREE_PHYSICAL_PRESENCE);

-  Status = gRT->GetVariable (

-                  TREE_PHYSICAL_PRESENCE_VARIABLE,

-                  &gEfiTrEEPhysicalPresenceGuid,

-                  NULL,

-                  &DataSize,

-                  &TcgPpData

-                  );

-  if (EFI_ERROR (Status)) {

-    ZeroMem ((VOID*)&TcgPpData, sizeof (TcgPpData));

-    DataSize = sizeof (EFI_TREE_PHYSICAL_PRESENCE);

-    Status   = gRT->SetVariable (

-                      TREE_PHYSICAL_PRESENCE_VARIABLE,

-                      &gEfiTrEEPhysicalPresenceGuid,

-                      EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,

-                      DataSize,

-                      &TcgPpData

-                      );

-    if (EFI_ERROR (Status)) {

-      DEBUG ((EFI_D_ERROR, "[TPM2] Set physical presence variable failed, Status = %r\n", Status));

-      return ;

-    }

-  }

-

-  DEBUG ((EFI_D_INFO, "[TPM2] Flags=%x, PPRequest=%x (LastPPRequest=%x)\n", PpiFlags.PPFlags, TcgPpData.PPRequest, TcgPpData.LastPPRequest));

-

-  //

-  // Execute pending TPM request.

-  //  

-  TrEEExecutePendingTpmRequest (PlatformAuth, &TcgPpData, PpiFlags);

-  DEBUG ((EFI_D_INFO, "[TPM2] PPResponse = %x (LastPPRequest=%x, Flags=%x)\n", TcgPpData.PPResponse, TcgPpData.LastPPRequest, PpiFlags.PPFlags));

-

-}

-

-/**

-  Check if the pending TPM request needs user input to confirm.

-

-  The TPM request may come from OS. This API will check if TPM request exists and need user

-  input to confirmation.

-  

-  @retval    TRUE        TPM needs input to confirm user physical presence.

-  @retval    FALSE       TPM doesn't need input to confirm user physical presence.

-

-**/

-BOOLEAN

-EFIAPI

-TrEEPhysicalPresenceLibNeedUserConfirm(

-  VOID

-  )

-{

-  EFI_STATUS                        Status;

-  EFI_TREE_PHYSICAL_PRESENCE        TcgPpData;

-  UINTN                             DataSize;

-  BOOLEAN                           RequestConfirmed;

-  EFI_TREE_PROTOCOL                 *TreeProtocol;

-  EFI_TREE_PHYSICAL_PRESENCE_FLAGS  PpiFlags;

-

-  Status = gBS->LocateProtocol (&gEfiTrEEProtocolGuid, NULL, (VOID **) &TreeProtocol);

-  if (EFI_ERROR (Status)) {

-    return FALSE;

-  }

-

-  //

-  // Check Tpm requests

-  //

-  DataSize = sizeof (EFI_TREE_PHYSICAL_PRESENCE);

-  Status = gRT->GetVariable (

-                  TREE_PHYSICAL_PRESENCE_VARIABLE,

-                  &gEfiTrEEPhysicalPresenceGuid,

-                  NULL,

-                  &DataSize,

-                  &TcgPpData

-                  );

-  if (EFI_ERROR (Status)) {

-    return FALSE;

-  }

-

-  DataSize = sizeof (EFI_TREE_PHYSICAL_PRESENCE_FLAGS);

-  Status = gRT->GetVariable (

-                  TREE_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

-                  &gEfiTrEEPhysicalPresenceGuid,

-                  NULL,

-                  &DataSize,

-                  &PpiFlags

-                  );

-  if (EFI_ERROR (Status)) {

-    return FALSE;

-  }

-  

-  if (TcgPpData.PPRequest == TREE_PHYSICAL_PRESENCE_NO_ACTION) {

-    //

-    // No operation request

-    //

-    return FALSE;

-  }

-

-  if (!TrEEHaveValidTpmRequest(&TcgPpData, PpiFlags, &RequestConfirmed)) {

-    //

-    // Invalid operation request.

-    //

-    return FALSE;

-  }

-

-  if (!RequestConfirmed) {

-    //

-    // Need UI to confirm

-    //

-    return TRUE;

-  }

-

-  return FALSE;

-}

-

diff --git a/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.inf b/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.inf
deleted file mode 100644
index 1c123ef..0000000
--- a/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.inf
+++ /dev/null
@@ -1,69 +0,0 @@
-## @file

-#  Executes TPM 2.0 requests from OS or BIOS

-#

-#  This library will check and execute TPM 2.0 request from OS or BIOS. The request may

-#  ask for user confirmation before execution.

-#

-#  Caution: This module requires additional review when modified.

-#  This driver will have external input - variable.

-#  This external input must be validated carefully to avoid security issue.

-#

-# Copyright (c) 2013 - 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.

-#

-##

-

-[Defines]

-  INF_VERSION                    = 0x00010005

-  BASE_NAME                      = DxeTrEEPhysicalPresenceLib

-  MODULE_UNI_FILE                = DxeTrEEPhysicalPresenceLib.uni

-  FILE_GUID                      = 601ECB06-7874-489e-A280-805780F6C861

-  MODULE_TYPE                    = DXE_DRIVER

-  VERSION_STRING                 = 1.0

-  LIBRARY_CLASS                  = TrEEPhysicalPresenceLib|DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER UEFI_APPLICATION UEFI_DRIVER 

-  CONSTRUCTOR                    = TrEEPhysicalPresenceLibConstructor

-  

-#

-# The following information is for reference only and not required by the build tools.

-#

-#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC

-#

-

-[Sources]

-  DxeTrEEPhysicalPresenceLib.c

-  PhysicalPresenceStrings.uni

-

-[Packages]

-  MdePkg/MdePkg.dec

-  MdeModulePkg/MdeModulePkg.dec

-  SecurityPkg/SecurityPkg.dec

-

-[LibraryClasses]

-  MemoryAllocationLib

-  UefiLib

-  UefiBootServicesTableLib

-  UefiDriverEntryPoint

-  UefiRuntimeServicesTableLib

-  BaseMemoryLib

-  DebugLib

-  PrintLib

-  HiiLib

-  Tpm2CommandLib

-  TrEEPpVendorLib

-

-[Protocols]

-  gEfiTrEEProtocolGuid                 ## SOMETIMES_CONSUMES

-  gEdkiiVariableLockProtocolGuid       ## SOMETIMES_CONSUMES

-

-[Guids]

-  ## SOMETIMES_CONSUMES ## HII

-  ## SOMETIMES_PRODUCES ## Variable:L"PhysicalPresence"

-  ## SOMETIMES_CONSUMES ## Variable:L"PhysicalPresence"

-  ## SOMETIMES_PRODUCES ## Variable:L"PhysicalPresenceFlags"

-  ## SOMETIMES_CONSUMES ## Variable:L"PhysicalPresenceFlags"

-  gEfiTrEEPhysicalPresenceGuid

diff --git a/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.uni b/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.uni
deleted file mode 100644
index 7cb7072..0000000
--- a/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/DxeTrEEPhysicalPresenceLib.uni
+++ /dev/null
@@ -1,27 +0,0 @@
-// /** @file

-// Executes TPM 2.0 requests from OS or BIOS

-//

-// This library will check and execute TPM 2.0 request from OS or BIOS. The request may

-// ask for user confirmation before execution.

-// 

-// Caution: This module requires additional review when modified.

-// This driver will have external input - variable.

-// This external input must be validated carefully to avoid security issue.

-//

-// Copyright (c) 2013 - 2014, 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.

-//

-// **/

-

-

-#string STR_MODULE_ABSTRACT             #language en-US "Executes TPM 2.0 requests from OS or BIOS"

-

-#string STR_MODULE_DESCRIPTION          #language en-US "This library will check and execute TPM 2.0 request from OS or BIOS. The request may ask for user confirmation before execution.\n"

-                                                        "Caution: This module requires additional review when modified. This driver will have external input - variable. This external input must be validated carefully to avoid security issue."

-

diff --git a/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/PhysicalPresenceStrings.uni b/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/PhysicalPresenceStrings.uni
deleted file mode 100644
index 633789f..0000000
--- a/SecurityPkg/Library/DxeTrEEPhysicalPresenceLib/PhysicalPresenceStrings.uni
+++ /dev/null
@@ -1,29 +0,0 @@
-/** @file

-  String definitions for TPM 2.0 physical presence confirm text.

-

-Copyright (c) 2013 - 2014, 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.

-

-**/

-

-#langdef en-US "English"

-

-#string TPM_HEAD_STR                  #language en-US    "A configuration change was requested to %s this computer's TPM (Trusted Platform Module)\n\n"

-#string TPM_PPI_HEAD_STR              #language en-US    "A configuration change was requested to allow the Operating System to %s the computer's TPM (Trusted Platform Module) without asking for user confirmation in the future.\n\n"

-

-#string TPM_ACCEPT_KEY                #language en-US    "Press F10 " 

-#string TPM_CAUTION_KEY               #language en-US    "Press F12 " 

-#string TPM_REJECT_KEY                #language en-US    "to %s the TPM \nPress ESC to reject this change request and continue\n"

-

-#string TPM_CLEAR                     #language en-US    "clear"

-

-#string TPM_NO_PPI_INFO               #language en-US    "to approve future Operating System requests "

-

-#string TPM_WARNING_CLEAR             #language en-US    "WARNING: Clearing erases information stored on the TPM. You will lose all created keys and access to data encrypted by these keys. "

-#string TPM_NOTE_CLEAR                #language en-US    "NOTE: This action does not clear the TPM, but by approving this configuration change, future actions to clear the TPM will not require user confirmation.\n\n"