SecurityPkg: Tcg2PhysicalPresenceLib: Introduce StandaloneMm instance

This change added a new instance of Tcg2PhysicalPresenceLib to support
MM_STANDALONE type drivers. It centralizes the common routines into
shared files and abstract the library constructor into corresponding
files to implement each constructor function prototypes.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>

Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>

7 files changed, 545 insertions, 367 deletions

diff --git a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/MmTcg2PhysicalPresenceLibCommon.c b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/MmTcg2PhysicalPresenceLibCommon.c
new file mode 100644
index 0000000000..3788537db3
--- /dev/null
+++ b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/MmTcg2PhysicalPresenceLibCommon.c
@@ -0,0 +1,398 @@
+/** @file

+  Handle TPM 2.0 physical presence requests from OS.

+

+  This library will handle TPM 2.0 physical presence request from OS.

+

+  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.

+

+  Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction() and Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction()

+  will receive untrusted input and do validation.

+

+Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>

+SPDX-License-Identifier: BSD-2-Clause-Patent

+

+**/

+

+#include <PiMm.h>

+

+#include <Guid/Tcg2PhysicalPresenceData.h>

+

+#include <Protocol/SmmVariable.h>

+

+#include <Library/BaseLib.h>

+#include <Library/DebugLib.h>

+#include <Library/BaseMemoryLib.h>

+#include <Library/Tcg2PpVendorLib.h>

+#include <Library/MmServicesTableLib.h>

+

+#define     PP_INF_VERSION_1_2    "1.2"

+

+EFI_SMM_VARIABLE_PROTOCOL  *mTcg2PpSmmVariable;

+BOOLEAN                    mIsTcg2PPVerLowerThan_1_3 = FALSE;

+UINT32                     mTcg2PhysicalPresenceFlags;

+

+/**

+  The handler for TPM physical presence function:

+  Return TPM Operation Response to OS Environment.

+

+  This API should be invoked in OS runtime phase to interface with ACPI method.

+

+  @param[out]     MostRecentRequest Most recent operation request.

+  @param[out]     Response          Response to the most recent operation request.

+

+  @return Return Code for Return TPM Operation Response to OS Environment.

+**/

+UINT32

+EFIAPI

+Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (

+  OUT UINT32                *MostRecentRequest,

+  OUT UINT32                *Response

+  )

+{

+  EFI_STATUS                        Status;

+  UINTN                             DataSize;

+  EFI_TCG2_PHYSICAL_PRESENCE        PpData;

+

+  DEBUG ((DEBUG_INFO, "[TPM2] ReturnOperationResponseToOsFunction\n"));

+

+  //

+  // Get the Physical Presence variable

+  //

+  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

+  Status = mTcg2PpSmmVariable->SmmGetVariable (

+                                 TCG2_PHYSICAL_PRESENCE_VARIABLE,

+                                 &gEfiTcg2PhysicalPresenceGuid,

+                                 NULL,

+                                 &DataSize,

+                                 &PpData

+                                 );

+  if (EFI_ERROR (Status)) {

+    *MostRecentRequest = 0;

+    *Response          = 0;

+    DEBUG ((DEBUG_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));

+    return TCG_PP_RETURN_TPM_OPERATION_RESPONSE_FAILURE;

+  }

+

+  *MostRecentRequest = PpData.LastPPRequest;

+  *Response          = PpData.PPResponse;

+

+  return TCG_PP_RETURN_TPM_OPERATION_RESPONSE_SUCCESS;

+}

+

+/**

+  The handler for TPM physical presence function:

+  Submit TPM Operation Request to Pre-OS Environment and

+  Submit TPM Operation Request to Pre-OS Environment 2.

+

+  This API should be invoked in OS runtime phase to interface with ACPI method.

+

+  Caution: This function may receive untrusted input.

+

+  @param[in, out]  Pointer to OperationRequest TPM physical presence operation request.

+  @param[in, out]  Pointer to RequestParameter TPM physical presence operation request parameter.

+

+  @return Return Code for Submit TPM Operation Request to Pre-OS Environment and

+        Submit TPM Operation Request to Pre-OS Environment 2.

+  **/

+UINT32

+Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx (

+  IN OUT UINT32               *OperationRequest,

+  IN OUT UINT32               *RequestParameter

+  )

+{

+  EFI_STATUS                        Status;

+  UINT32                            ReturnCode;

+  UINTN                             DataSize;

+  EFI_TCG2_PHYSICAL_PRESENCE        PpData;

+  EFI_TCG2_PHYSICAL_PRESENCE_FLAGS  Flags;

+

+  DEBUG ((DEBUG_INFO, "[TPM2] SubmitRequestToPreOSFunction, Request = %x, %x\n", *OperationRequest, *RequestParameter));

+  ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS;

+

+  //

+  // Get the Physical Presence variable

+  //

+  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

+  Status = mTcg2PpSmmVariable->SmmGetVariable (

+                                 TCG2_PHYSICAL_PRESENCE_VARIABLE,

+                                 &gEfiTcg2PhysicalPresenceGuid,

+                                 NULL,

+                                 &DataSize,

+                                 &PpData

+                                 );

+  if (EFI_ERROR (Status)) {

+    DEBUG ((DEBUG_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));

+    ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;

+    goto EXIT;

+  }

+

+  if ((*OperationRequest > TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) &&

+      (*OperationRequest < TCG2_PHYSICAL_PRESENCE_STORAGE_MANAGEMENT_BEGIN) ) {

+    ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED;

+    goto EXIT;

+  }

+

+  if ((PpData.PPRequest != *OperationRequest) ||

+      (PpData.PPRequestParameter != *RequestParameter)) {

+    PpData.PPRequest = (UINT8)*OperationRequest;

+    PpData.PPRequestParameter = *RequestParameter;

+    DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

+    Status = mTcg2PpSmmVariable->SmmSetVariable (

+                                   TCG2_PHYSICAL_PRESENCE_VARIABLE,

+                                   &gEfiTcg2PhysicalPresenceGuid,

+                                   EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,

+                                   DataSize,

+                                   &PpData

+                                   );

+    if (EFI_ERROR (Status)) {

+      DEBUG ((DEBUG_ERROR, "[TPM2] Set PP variable failure! Status = %r\n", Status));

+      ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;

+      goto EXIT;

+    }

+  }

+

+  if (*OperationRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

+    DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);

+    Status = mTcg2PpSmmVariable->SmmGetVariable (

+                                   TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

+                                   &gEfiTcg2PhysicalPresenceGuid,

+                                   NULL,

+                                   &DataSize,

+                                   &Flags

+                                   );

+    if (EFI_ERROR (Status)) {

+      Flags.PPFlags = mTcg2PhysicalPresenceFlags;

+    }

+    ReturnCode = Tcg2PpVendorLibSubmitRequestToPreOSFunction (*OperationRequest, Flags.PPFlags, *RequestParameter);

+  }

+

+EXIT:

+  //

+  // Sync PPRQ/PPRM from PP Variable if PP submission fails

+  //

+  if (ReturnCode != TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS) {

+    DEBUG ((DEBUG_ERROR, "[TPM2] Submit PP Request failure! Sync PPRQ/PPRM with PP variable.\n", Status));

+    DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

+    ZeroMem(&PpData, DataSize);

+    Status = mTcg2PpSmmVariable->SmmGetVariable (

+                                   TCG2_PHYSICAL_PRESENCE_VARIABLE,

+                                   &gEfiTcg2PhysicalPresenceGuid,

+                                   NULL,

+                                   &DataSize,

+                                   &PpData

+                                   );

+    *OperationRequest = (UINT32)PpData.PPRequest;

+    *RequestParameter = PpData.PPRequestParameter;

+  }

+

+  return ReturnCode;

+}

+

+/**

+  The handler for TPM physical presence function:

+  Submit TPM Operation Request to Pre-OS Environment and

+  Submit TPM Operation Request to Pre-OS Environment 2.

+

+  This API should be invoked in OS runtime phase to interface with ACPI method.

+

+  Caution: This function may receive untrusted input.

+

+  @param[in]      OperationRequest TPM physical presence operation request.

+  @param[in]      RequestParameter TPM physical presence operation request parameter.

+

+  @return Return Code for Submit TPM Operation Request to Pre-OS Environment and

+          Submit TPM Operation Request to Pre-OS Environment 2.

+**/

+UINT32

+EFIAPI

+Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (

+  IN UINT32                 OperationRequest,

+  IN UINT32                 RequestParameter

+  )

+{

+  UINT32                 TempOperationRequest;

+  UINT32                 TempRequestParameter;

+

+  TempOperationRequest = OperationRequest;

+  TempRequestParameter = RequestParameter;

+

+  return Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx(&TempOperationRequest, &TempRequestParameter);

+}

+

+/**

+  The handler for TPM physical presence function:

+  Get User Confirmation Status for Operation.

+

+  This API should be invoked in OS runtime phase to interface with ACPI method.

+

+  Caution: This function may receive untrusted input.

+

+  @param[in]      OperationRequest TPM physical presence operation request.

+

+  @return Return Code for Get User Confirmation Status for Operation.

+**/

+UINT32

+EFIAPI

+Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction (

+  IN UINT32                 OperationRequest

+  )

+{

+  EFI_STATUS                        Status;

+  UINTN                             DataSize;

+  EFI_TCG2_PHYSICAL_PRESENCE        PpData;

+  EFI_TCG2_PHYSICAL_PRESENCE_FLAGS  Flags;

+  BOOLEAN                           RequestConfirmed;

+

+  DEBUG ((DEBUG_INFO, "[TPM2] GetUserConfirmationStatusFunction, Request = %x\n", OperationRequest));

+

+  //

+  // Get the Physical Presence variable

+  //

+  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

+  Status = mTcg2PpSmmVariable->SmmGetVariable (

+                                 TCG2_PHYSICAL_PRESENCE_VARIABLE,

+                                 &gEfiTcg2PhysicalPresenceGuid,

+                                 NULL,

+                                 &DataSize,

+                                 &PpData

+                                 );

+  if (EFI_ERROR (Status)) {

+    DEBUG ((DEBUG_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));

+    return TCG_PP_GET_USER_CONFIRMATION_BLOCKED_BY_BIOS_CONFIGURATION;

+  }

+  //

+  // Get the Physical Presence flags

+  //

+  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);

+  Status = mTcg2PpSmmVariable->SmmGetVariable (

+                                 TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

+                                 &gEfiTcg2PhysicalPresenceGuid,

+                                 NULL,

+                                 &DataSize,

+                                 &Flags

+                                 );

+  if (EFI_ERROR (Status)) {

+    DEBUG ((DEBUG_ERROR, "[TPM2] Get PP flags failure! Status = %r\n", Status));

+    return TCG_PP_GET_USER_CONFIRMATION_BLOCKED_BY_BIOS_CONFIGURATION;

+  }

+

+  RequestConfirmed = FALSE;

+

+  switch (OperationRequest) {

+    case TCG2_PHYSICAL_PRESENCE_CLEAR:

+    case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:

+    case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:

+    case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:

+      if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CLEAR) == 0) {

+        RequestConfirmed = TRUE;

+      }

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_NO_ACTION:

+    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_TRUE:

+      RequestConfirmed = TRUE;

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_FALSE:

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:

+      if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CHANGE_PCRS) == 0) {

+        RequestConfirmed = TRUE;

+      }

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:

+      if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CHANGE_EPS) == 0) {

+        RequestConfirmed = TRUE;

+      }

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS:

+      RequestConfirmed = TRUE;

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:

+      if ((Flags.PPFlags & TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_ENABLE_BLOCK_SID) == 0) {

+        RequestConfirmed = TRUE;

+      }

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:

+      if ((Flags.PPFlags & TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_DISABLE_BLOCK_SID) == 0) {

+        RequestConfirmed = TRUE;

+      }

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_TRUE:

+    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_TRUE:

+      RequestConfirmed = TRUE;

+      break;

+

+    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_FALSE:

+    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_FALSE:

+      break;

+

+    default:

+      if (!mIsTcg2PPVerLowerThan_1_3) {

+        if (OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

+          //

+          // TCG2 PP1.3 spec defined operations that are reserved or un-implemented

+          //

+          return TCG_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED;

+        }

+      } else {

+       //

+       // TCG PP lower than 1.3. (1.0, 1.1, 1.2)

+       //

+       if (OperationRequest <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {

+         RequestConfirmed = TRUE;

+       } else if (OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

+         return TCG_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED;

+       }

+      }

+      break;

+  }

+

+  if (OperationRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

+    return Tcg2PpVendorLibGetUserConfirmationStatusFunction (OperationRequest, Flags.PPFlags);

+  }

+

+  if (RequestConfirmed) {

+    return TCG_PP_GET_USER_CONFIRMATION_ALLOWED_AND_PPUSER_NOT_REQUIRED;

+  } else {

+    return TCG_PP_GET_USER_CONFIRMATION_ALLOWED_AND_PPUSER_REQUIRED;

+  }

+}

+

+/**

+  The constructor function locates SmmVariable protocol.

+

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

+

+  @retval EFI_SUCCESS   The constructor successfully added string package.

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

+**/

+EFI_STATUS

+Tcg2PhysicalPresenceLibCommonConstructor (

+  VOID

+  )

+{

+  EFI_STATUS  Status;

+

+  if (AsciiStrnCmp(PP_INF_VERSION_1_2, (CHAR8 *)PcdGetPtr(PcdTcgPhysicalPresenceInterfaceVer), sizeof(PP_INF_VERSION_1_2) - 1) >= 0) {

+    mIsTcg2PPVerLowerThan_1_3 = TRUE;

+  }

+

+  //

+  // Locate SmmVariableProtocol.

+  //

+  Status = gMmst->MmLocateProtocol (&gEfiSmmVariableProtocolGuid, NULL, (VOID**)&mTcg2PpSmmVariable);

+  ASSERT_EFI_ERROR (Status);

+

+  mTcg2PhysicalPresenceFlags = PcdGet32(PcdTcg2PhysicalPresenceFlags);

+

+  return EFI_SUCCESS;

+}

diff --git a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/MmTcg2PhysicalPresenceLibCommon.h b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/MmTcg2PhysicalPresenceLibCommon.h
new file mode 100644
index 0000000000..a0182739e9
--- /dev/null
+++ b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/MmTcg2PhysicalPresenceLibCommon.h
@@ -0,0 +1,34 @@
+/** @file

+  Handle TPM 2.0 physical presence requests from OS.

+

+  This library will handle TPM 2.0 physical presence request from OS.

+

+  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.

+

+  Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction() and Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction()

+  will receive untrusted input and do validation.

+

+Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>

+SPDX-License-Identifier: BSD-2-Clause-Patent

+

+**/

+

+#ifndef _MM_TCG2_PHYSICAL_PRESENCE_LIB_COMMON_H_

+#define _MM_TCG2_PHYSICAL_PRESENCE_LIB_COMMON_H_

+

+/**

+  The constructor function locates MmVariable protocol.

+

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

+

+  @retval EFI_SUCCESS   The constructor successfully added string package.

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

+**/

+EFI_STATUS

+Tcg2PhysicalPresenceLibCommonConstructor (

+  VOID

+  );

+

+#endif

diff --git a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
index 8afaa0a785..36d8b89dcd 100644
--- a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
+++ b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c
@@ -17,355 +17,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 

 #include <PiSmm.h>

 

-#include <Guid/Tcg2PhysicalPresenceData.h>

-

-#include <Protocol/SmmVariable.h>

-

-#include <Library/BaseLib.h>

-#include <Library/DebugLib.h>

-#include <Library/BaseMemoryLib.h>

-#include <Library/Tcg2PpVendorLib.h>

-#include <Library/SmmServicesTableLib.h>

-

-#define     PP_INF_VERSION_1_2    "1.2"

-

-EFI_SMM_VARIABLE_PROTOCOL  *mTcg2PpSmmVariable;

-BOOLEAN                    mIsTcg2PPVerLowerThan_1_3 = FALSE;

-UINT32                     mTcg2PhysicalPresenceFlags;

-

-/**

-  The handler for TPM physical presence function:

-  Return TPM Operation Response to OS Environment.

-

-  This API should be invoked in OS runtime phase to interface with ACPI method.

-

-  @param[out]     MostRecentRequest Most recent operation request.

-  @param[out]     Response          Response to the most recent operation request.

-

-  @return Return Code for Return TPM Operation Response to OS Environment.

-**/

-UINT32

-EFIAPI

-Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (

-  OUT UINT32                *MostRecentRequest,

-  OUT UINT32                *Response

-  )

-{

-  EFI_STATUS                        Status;

-  UINTN                             DataSize;

-  EFI_TCG2_PHYSICAL_PRESENCE        PpData;

-

-  DEBUG ((EFI_D_INFO, "[TPM2] ReturnOperationResponseToOsFunction\n"));

-

-  //

-  // Get the Physical Presence variable

-  //

-  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

-  Status = mTcg2PpSmmVariable->SmmGetVariable (

-                                 TCG2_PHYSICAL_PRESENCE_VARIABLE,

-                                 &gEfiTcg2PhysicalPresenceGuid,

-                                 NULL,

-                                 &DataSize,

-                                 &PpData

-                                 );

-  if (EFI_ERROR (Status)) {

-    *MostRecentRequest = 0;

-    *Response          = 0;

-    DEBUG ((EFI_D_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));

-    return TCG_PP_RETURN_TPM_OPERATION_RESPONSE_FAILURE;

-  }

-

-  *MostRecentRequest = PpData.LastPPRequest;

-  *Response          = PpData.PPResponse;

-

-  return TCG_PP_RETURN_TPM_OPERATION_RESPONSE_SUCCESS;

-}

-

-/**

-  The handler for TPM physical presence function:

-  Submit TPM Operation Request to Pre-OS Environment and

-  Submit TPM Operation Request to Pre-OS Environment 2.

-

-  This API should be invoked in OS runtime phase to interface with ACPI method.

-

-  Caution: This function may receive untrusted input.

-

-  @param[in, out]  Pointer to OperationRequest TPM physical presence operation request.

-  @param[in, out]  Pointer to RequestParameter TPM physical presence operation request parameter.

-

-  @return Return Code for Submit TPM Operation Request to Pre-OS Environment and

-        Submit TPM Operation Request to Pre-OS Environment 2.

-  **/

-UINT32

-Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx (

-  IN OUT UINT32               *OperationRequest,

-  IN OUT UINT32               *RequestParameter

-  )

-{

-  EFI_STATUS                        Status;

-  UINT32                            ReturnCode;

-  UINTN                             DataSize;

-  EFI_TCG2_PHYSICAL_PRESENCE        PpData;

-  EFI_TCG2_PHYSICAL_PRESENCE_FLAGS  Flags;

-

-  DEBUG ((EFI_D_INFO, "[TPM2] SubmitRequestToPreOSFunction, Request = %x, %x\n", *OperationRequest, *RequestParameter));

-  ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS;

-

-  //

-  // Get the Physical Presence variable

-  //

-  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

-  Status = mTcg2PpSmmVariable->SmmGetVariable (

-                                 TCG2_PHYSICAL_PRESENCE_VARIABLE,

-                                 &gEfiTcg2PhysicalPresenceGuid,

-                                 NULL,

-                                 &DataSize,

-                                 &PpData

-                                 );

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));

-    ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;

-    goto EXIT;

-  }

-

-  if ((*OperationRequest > TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) &&

-      (*OperationRequest < TCG2_PHYSICAL_PRESENCE_STORAGE_MANAGEMENT_BEGIN) ) {

-    ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED;

-    goto EXIT;

-  }

-

-  if ((PpData.PPRequest != *OperationRequest) ||

-      (PpData.PPRequestParameter != *RequestParameter)) {

-    PpData.PPRequest = (UINT8)*OperationRequest;

-    PpData.PPRequestParameter = *RequestParameter;

-    DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

-    Status = mTcg2PpSmmVariable->SmmSetVariable (

-                                   TCG2_PHYSICAL_PRESENCE_VARIABLE,

-                                   &gEfiTcg2PhysicalPresenceGuid,

-                                   EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,

-                                   DataSize,

-                                   &PpData

-                                   );

-    if (EFI_ERROR (Status)) {

-      DEBUG ((EFI_D_ERROR, "[TPM2] Set PP variable failure! Status = %r\n", Status));

-      ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;

-      goto EXIT;

-    }

-  }

-

-  if (*OperationRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

-    DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);

-    Status = mTcg2PpSmmVariable->SmmGetVariable (

-                                   TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

-                                   &gEfiTcg2PhysicalPresenceGuid,

-                                   NULL,

-                                   &DataSize,

-                                   &Flags

-                                   );

-    if (EFI_ERROR (Status)) {

-      Flags.PPFlags = mTcg2PhysicalPresenceFlags;

-    }

-    ReturnCode = Tcg2PpVendorLibSubmitRequestToPreOSFunction (*OperationRequest, Flags.PPFlags, *RequestParameter);

-  }

-

-EXIT:

-  //

-  // Sync PPRQ/PPRM from PP Variable if PP submission fails

-  //

-  if (ReturnCode != TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS) {

-    DEBUG ((EFI_D_ERROR, "[TPM2] Submit PP Request failure! Sync PPRQ/PPRM with PP variable.\n", Status));

-    DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

-    ZeroMem(&PpData, DataSize);

-    Status = mTcg2PpSmmVariable->SmmGetVariable (

-                                   TCG2_PHYSICAL_PRESENCE_VARIABLE,

-                                   &gEfiTcg2PhysicalPresenceGuid,

-                                   NULL,

-                                   &DataSize,

-                                   &PpData

-                                   );

-    *OperationRequest = (UINT32)PpData.PPRequest;

-    *RequestParameter = PpData.PPRequestParameter;

-  }

-

-  return ReturnCode;

-}

-

-/**

-  The handler for TPM physical presence function:

-  Submit TPM Operation Request to Pre-OS Environment and

-  Submit TPM Operation Request to Pre-OS Environment 2.

-

-  This API should be invoked in OS runtime phase to interface with ACPI method.

-

-  Caution: This function may receive untrusted input.

-

-  @param[in]      OperationRequest TPM physical presence operation request.

-  @param[in]      RequestParameter TPM physical presence operation request parameter.

-

-  @return Return Code for Submit TPM Operation Request to Pre-OS Environment and

-          Submit TPM Operation Request to Pre-OS Environment 2.

-**/

-UINT32

-EFIAPI

-Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (

-  IN UINT32                 OperationRequest,

-  IN UINT32                 RequestParameter

-  )

-{

-  UINT32                 TempOperationRequest;

-  UINT32                 TempRequestParameter;

-

-  TempOperationRequest = OperationRequest;

-  TempRequestParameter = RequestParameter;

-

-  return Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx(&TempOperationRequest, &TempRequestParameter);

-}

-

-/**

-  The handler for TPM physical presence function:

-  Get User Confirmation Status for Operation.

-

-  This API should be invoked in OS runtime phase to interface with ACPI method.

-

-  Caution: This function may receive untrusted input.

-

-  @param[in]      OperationRequest TPM physical presence operation request.

-

-  @return Return Code for Get User Confirmation Status for Operation.

-**/

-UINT32

-EFIAPI

-Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction (

-  IN UINT32                 OperationRequest

-  )

-{

-  EFI_STATUS                        Status;

-  UINTN                             DataSize;

-  EFI_TCG2_PHYSICAL_PRESENCE        PpData;

-  EFI_TCG2_PHYSICAL_PRESENCE_FLAGS  Flags;

-  BOOLEAN                           RequestConfirmed;

-

-  DEBUG ((EFI_D_INFO, "[TPM2] GetUserConfirmationStatusFunction, Request = %x\n", OperationRequest));

-

-  //

-  // Get the Physical Presence variable

-  //

-  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);

-  Status = mTcg2PpSmmVariable->SmmGetVariable (

-                                 TCG2_PHYSICAL_PRESENCE_VARIABLE,

-                                 &gEfiTcg2PhysicalPresenceGuid,

-                                 NULL,

-                                 &DataSize,

-                                 &PpData

-                                 );

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));

-    return TCG_PP_GET_USER_CONFIRMATION_BLOCKED_BY_BIOS_CONFIGURATION;

-  }

-  //

-  // Get the Physical Presence flags

-  //

-  DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);

-  Status = mTcg2PpSmmVariable->SmmGetVariable (

-                                 TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,

-                                 &gEfiTcg2PhysicalPresenceGuid,

-                                 NULL,

-                                 &DataSize,

-                                 &Flags

-                                 );

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "[TPM2] Get PP flags failure! Status = %r\n", Status));

-    return TCG_PP_GET_USER_CONFIRMATION_BLOCKED_BY_BIOS_CONFIGURATION;

-  }

-

-  RequestConfirmed = FALSE;

-

-  switch (OperationRequest) {

-    case TCG2_PHYSICAL_PRESENCE_CLEAR:

-    case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:

-    case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:

-    case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:

-      if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CLEAR) == 0) {

-        RequestConfirmed = TRUE;

-      }

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_NO_ACTION:

-    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_TRUE:

-      RequestConfirmed = TRUE;

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_FALSE:

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:

-      if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CHANGE_PCRS) == 0) {

-        RequestConfirmed = TRUE;

-      }

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:

-      if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CHANGE_EPS) == 0) {

-        RequestConfirmed = TRUE;

-      }

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS:

-      RequestConfirmed = TRUE;

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:

-      if ((Flags.PPFlags & TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_ENABLE_BLOCK_SID) == 0) {

-        RequestConfirmed = TRUE;

-      }

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:

-      if ((Flags.PPFlags & TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_DISABLE_BLOCK_SID) == 0) {

-        RequestConfirmed = TRUE;

-      }

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_TRUE:

-    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_TRUE:

-      RequestConfirmed = TRUE;

-      break;

-

-    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_FALSE:

-    case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_FALSE:

-      break;

-

-    default:

-      if (!mIsTcg2PPVerLowerThan_1_3) {

-        if (OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

-          //

-          // TCG2 PP1.3 spec defined operations that are reserved or un-implemented

-          //

-          return TCG_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED;

-        }

-      } else {

-       //

-       // TCG PP lower than 1.3. (1.0, 1.1, 1.2)

-       //

-       if (OperationRequest <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {

-         RequestConfirmed = TRUE;

-       } else if (OperationRequest < TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

-         return TCG_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED;

-       }

-      }

-      break;

-  }

-

-  if (OperationRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {

-    return Tcg2PpVendorLibGetUserConfirmationStatusFunction (OperationRequest, Flags.PPFlags);

-  }

-

-  if (RequestConfirmed) {

-    return TCG_PP_GET_USER_CONFIRMATION_ALLOWED_AND_PPUSER_NOT_REQUIRED;

-  } else {

-    return TCG_PP_GET_USER_CONFIRMATION_ALLOWED_AND_PPUSER_REQUIRED;

-  }

-}

+#include "MmTcg2PhysicalPresenceLibCommon.h"

 

 /**

   The constructor function locates SmmVariable protocol.

@@ -380,24 +32,10 @@ Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction (
 **/

 EFI_STATUS

 EFIAPI

-Tcg2PhysicalPresenceLibConstructor (

+Tcg2PhysicalPresenceLibTraditionalConstructor (

   IN EFI_HANDLE        ImageHandle,

   IN EFI_SYSTEM_TABLE  *SystemTable

   )

 {

-  EFI_STATUS  Status;

-

-  if (AsciiStrnCmp(PP_INF_VERSION_1_2, (CHAR8 *)PcdGetPtr(PcdTcgPhysicalPresenceInterfaceVer), sizeof(PP_INF_VERSION_1_2) - 1) >= 0) {

-    mIsTcg2PPVerLowerThan_1_3 = TRUE;

-  }

-

-  //

-  // Locate SmmVariableProtocol.

-  //

-  Status = gSmst->SmmLocateProtocol (&gEfiSmmVariableProtocolGuid, NULL, (VOID**)&mTcg2PpSmmVariable);

-  ASSERT_EFI_ERROR (Status);

-

-  mTcg2PhysicalPresenceFlags = PcdGet32(PcdTcg2PhysicalPresenceFlags);

-

-  return EFI_SUCCESS;

+  return Tcg2PhysicalPresenceLibCommonConstructor ();

 }

diff --git a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.inf b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.inf
index 6a9bdf66f0..d911adbdb6 100644
--- a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.inf
+++ b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.inf
@@ -20,7 +20,7 @@
   MODULE_TYPE                    = DXE_SMM_DRIVER

   VERSION_STRING                 = 1.0

   LIBRARY_CLASS                  = Tcg2PhysicalPresenceLib|DXE_SMM_DRIVER

-  CONSTRUCTOR                    = Tcg2PhysicalPresenceLibConstructor

+  CONSTRUCTOR                    = Tcg2PhysicalPresenceLibTraditionalConstructor

 

 #

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

@@ -30,6 +30,8 @@
 

 [Sources]

   SmmTcg2PhysicalPresenceLib.c

+  MmTcg2PhysicalPresenceLibCommon.c

+  MmTcg2PhysicalPresenceLibCommon.h

 

 [Packages]

   MdePkg/MdePkg.dec

@@ -39,7 +41,7 @@
 [LibraryClasses]

   DebugLib

   Tcg2PpVendorLib

-  SmmServicesTableLib

+  MmServicesTableLib

   BaseMemoryLib

 

 [Guids]

diff --git a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/StandaloneMmTcg2PhysicalPresenceLib.c b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/StandaloneMmTcg2PhysicalPresenceLib.c
new file mode 100644
index 0000000000..5c298a8d57
--- /dev/null
+++ b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/StandaloneMmTcg2PhysicalPresenceLib.c
@@ -0,0 +1,42 @@
+/** @file

+  Handle TPM 2.0 physical presence requests from OS.

+

+  This library will handle TPM 2.0 physical presence request from OS.

+

+  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.

+

+  Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction() and Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction()

+  will receive untrusted input and do validation.

+

+Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>

+Copyright (c) Microsoft Corporation.

+SPDX-License-Identifier: BSD-2-Clause-Patent

+

+**/

+

+#include <PiMm.h>

+

+#include "MmTcg2PhysicalPresenceLibCommon.h"

+

+/**

+  The constructor function locates SmmVariable protocol.

+

+  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

+Tcg2PhysicalPresenceLibStandaloneMmConstructor (

+  IN EFI_HANDLE           ImageHandle,

+  IN EFI_MM_SYSTEM_TABLE  *SystemTable

+  )

+{

+  return Tcg2PhysicalPresenceLibCommonConstructor ();

+}

diff --git a/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/StandaloneMmTcg2PhysicalPresenceLib.inf b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/StandaloneMmTcg2PhysicalPresenceLib.inf
new file mode 100644
index 0000000000..6d11b6b9f1
--- /dev/null
+++ b/SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/StandaloneMmTcg2PhysicalPresenceLib.inf
@@ -0,0 +1,62 @@
+## @file

+#  Handle TPM 2.0 physical presence requests from OS.

+#

+#  This library will handle TPM 2.0 physical presence request from OS.

+#

+#  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) 2015 - 2020, Intel Corporation. All rights reserved.<BR>

+# Copyright (c) Microsoft Corporation.

+# SPDX-License-Identifier: BSD-2-Clause-Patent

+#

+##

+

+[Defines]

+  INF_VERSION                    = 0x00010005

+  BASE_NAME                      = StandaloneMmTcg2PhysicalPresenceLib

+  FILE_GUID                      = 75E3D07B-689C-4F42-A8A0-46AFAE868A6F

+  MODULE_TYPE                    = MM_STANDALONE

+  PI_SPECIFICATION_VERSION       = 0x00010032

+  VERSION_STRING                 = 1.0

+  LIBRARY_CLASS                  = Tcg2PhysicalPresenceLib|MM_STANDALONE

+  CONSTRUCTOR                    = Tcg2PhysicalPresenceLibStandaloneMmConstructor

+

+#

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

+#

+#  VALID_ARCHITECTURES           = IA32 X64 EBC

+#

+

+[Sources]

+  StandaloneMmTcg2PhysicalPresenceLib.c

+  MmTcg2PhysicalPresenceLibCommon.c

+  MmTcg2PhysicalPresenceLibCommon.h

+

+[Packages]

+  MdePkg/MdePkg.dec

+  MdeModulePkg/MdeModulePkg.dec

+  SecurityPkg/SecurityPkg.dec

+

+[LibraryClasses]

+  DebugLib

+  Tcg2PpVendorLib

+  MmServicesTableLib

+  BaseMemoryLib

+

+[Guids]

+  ## SOMETIMES_PRODUCES ## Variable:L"PhysicalPresence"

+  ## SOMETIMES_CONSUMES ## Variable:L"PhysicalPresence"

+  ## SOMETIMES_CONSUMES ## Variable:L"PhysicalPresenceFlags"

+  gEfiTcg2PhysicalPresenceGuid

+

+[Protocols]

+  gEfiSmmVariableProtocolGuid                                       ## CONSUMES

+

+[Pcd]

+  gEfiSecurityPkgTokenSpaceGuid.PcdTcgPhysicalPresenceInterfaceVer  ## CONSUMES

+  gEfiSecurityPkgTokenSpaceGuid.PcdTcg2PhysicalPresenceFlags        ## SOMETIMES_CONSUMES

+

+[Depex]

+  gEfiSmmVariableProtocolGuid

diff --git a/SecurityPkg/SecurityPkg.dsc b/SecurityPkg/SecurityPkg.dsc
index 36d15b79f9..7240b2573e 100644
--- a/SecurityPkg/SecurityPkg.dsc
+++ b/SecurityPkg/SecurityPkg.dsc
@@ -150,6 +150,7 @@
 [LibraryClasses.common.DXE_SMM_DRIVER]

   HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf

   SmmServicesTableLib|MdePkg/Library/SmmServicesTableLib/SmmServicesTableLib.inf

+  MmServicesTableLib|MdePkg/Library/MmServicesTableLib/MmServicesTableLib.inf

   MemoryAllocationLib|MdePkg/Library/SmmMemoryAllocationLib/SmmMemoryAllocationLib.inf

   ReportStatusCodeLib|MdeModulePkg/Library/SmmReportStatusCodeLib/SmmReportStatusCodeLib.inf

   SmmMemLib|MdePkg/Library/SmmMemLib/SmmMemLib.inf

@@ -316,6 +317,7 @@
   SecurityPkg/Tcg/TcgSmm/TcgSmm.inf

   SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.inf

   SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.inf

+  SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/StandaloneMmTcg2PhysicalPresenceLib.inf

 

   #

   # Random Number Generator