SecurityPkg/Tcg2StandaloneMm:Consume gEdkiiTpmInstanceHobGuid

Consume gEdkiiTpmInstanceHobGuid in Tcg2StandaloneMm
driver. It's to avoid using dynamic PcdTpmInstanceGuid
in StandaloneMm driver.

Signed-off-by: Dun Tan <dun.tan@intel.com>

5 files changed, 61 insertions, 9 deletions

diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
index c47c582..c2cef76 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
@@ -9,7 +9,7 @@
 

   PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.

 

-Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2015 - 2024, Intel Corporation. All rights reserved.<BR>

 Copyright (c) Microsoft Corporation.

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

 

@@ -285,7 +285,7 @@ InitializeTcgCommon (
   EFI_HANDLE                     McSwHandle;

   EFI_HANDLE                     NotifyHandle;

 

-  if (!CompareGuid (PcdGetPtr (PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm20DtpmGuid)) {

+  if (!IsTpm20Dtpm ()) {

     DEBUG ((DEBUG_ERROR, "No TPM2 DTPM instance required!\n"));

     return EFI_UNSUPPORTED;

   }

diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.h b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.h
index 84b65eb..3672db9 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.h
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.h
@@ -1,7 +1,7 @@
 /** @file

   The header file for Tcg2 SMM driver.

 

-Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2015 - 2024, Intel Corporation. All rights reserved.<BR>

 Copyright (c) Microsoft Corporation.

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

 

@@ -84,4 +84,15 @@ InitializeTcgCommon (
   VOID

   );

 

+/**

+  This function checks if the required DTPM instance is TPM 2.0.

+

+  @retval TRUE  The required DTPM instance is equal to gEfiTpmDeviceInstanceTpm20DtpmGuid.

+  @retval FALSE The required DTPM instance is not equal to gEfiTpmDeviceInstanceTpm20DtpmGuid.

+**/

+BOOLEAN

+IsTpm20Dtpm (

+  VOID

+  );

+

 #endif // __TCG_SMM_H__

diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2StandaloneMm.c b/SecurityPkg/Tcg/Tcg2Smm/Tcg2StandaloneMm.c
index 77fa369..9320053 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2StandaloneMm.c
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2StandaloneMm.c
@@ -9,7 +9,7 @@
 

   PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.

 

-Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2015 - 2024, Intel Corporation. All rights reserved.<BR>

 Copyright (c) Microsoft Corporation.

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

 

@@ -17,6 +17,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 

 #include "Tcg2Smm.h"

 #include <Library/StandaloneMmMemLib.h>

+#include <Library/HobLib.h>

 

 /**

   Notify the system that the SMM variable driver is ready.

@@ -48,6 +49,33 @@ IsBufferOutsideMmValid (
 }

 

 /**

+  This function checks if the required DTPM instance is TPM 2.0.

+

+  @retval TRUE  The required DTPM instance is equal to gEfiTpmDeviceInstanceTpm20DtpmGuid.

+  @retval FALSE The required DTPM instance is not equal to gEfiTpmDeviceInstanceTpm20DtpmGuid.

+**/

+BOOLEAN

+IsTpm20Dtpm (

+  VOID

+  )

+{

+  VOID  *GuidHob;

+

+  GuidHob = GetFirstGuidHob (&gEdkiiTpmInstanceHobGuid);

+  if (GuidHob != NULL) {

+    if (CompareGuid ((EFI_GUID *)GET_GUID_HOB_DATA (GuidHob), &gEfiTpmDeviceInstanceTpm20DtpmGuid)) {

+      return TRUE;

+    }

+

+    DEBUG ((DEBUG_ERROR, "No TPM2 DTPM instance required! - %g\n", (EFI_GUID *)GET_GUID_HOB_DATA (GuidHob)));

+  } else {

+    DEBUG ((DEBUG_ERROR, "No gEdkiiTpmInstanceHobGuid!\n"));

+  }

+

+  return FALSE;

+}

+

+/**

   The driver's entry point.

 

   It install callbacks for TPM physical presence and MemoryClear, and locate

diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2StandaloneMm.inf b/SecurityPkg/Tcg/Tcg2Smm/Tcg2StandaloneMm.inf
index 746eda3..bca59a5 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2StandaloneMm.inf
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2StandaloneMm.inf
@@ -20,7 +20,7 @@
 #  This driver will have external input - variable and ACPINvs data in SMM mode.

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

 #

-# Copyright (c) 2015 - 2019, Intel Corporation. All rights reserved.<BR>

+# Copyright (c) 2015 - 2024, Intel Corporation. All rights reserved.<BR>

 # Copyright (c) Microsoft Corporation.<BR>

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

 #

@@ -55,6 +55,7 @@
   Tcg2PhysicalPresenceLib

   PcdLib

   MemLib

+  HobLib

 

 [Guids]

   ## SOMETIMES_PRODUCES ## Variable:L"MemoryOverwriteRequestControl"

@@ -63,15 +64,13 @@
 

   gEfiTpmDeviceInstanceTpm20DtpmGuid                            ## PRODUCES           ## GUID       # TPM device identifier

   gTpmNvsMmGuid                                                 ## CONSUMES

+  gEdkiiTpmInstanceHobGuid

 

 [Protocols]

   gEfiSmmSwDispatch2ProtocolGuid                                ## CONSUMES

   gEfiSmmVariableProtocolGuid                                   ## CONSUMES

   gEfiMmReadyToLockProtocolGuid                                 ## CONSUMES

 

-[Pcd]

-  gEfiSecurityPkgTokenSpaceGuid.PcdTpmInstanceGuid              ## CONSUMES

-

 [Depex]

   gEfiSmmSwDispatch2ProtocolGuid AND

   gEfiSmmVariableProtocolGuid

diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2TraditionalMm.c b/SecurityPkg/Tcg/Tcg2Smm/Tcg2TraditionalMm.c
index 514171c..f7d595e 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2TraditionalMm.c
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2TraditionalMm.c
@@ -9,7 +9,7 @@
 

   PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.

 

-Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2015 - 2024, Intel Corporation. All rights reserved.<BR>

 Copyright (c) Microsoft Corporation.

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

 

@@ -59,6 +59,20 @@ IsBufferOutsideMmValid (
 }

 

 /**

+  This function checks if the required DTPM instance is TPM 2.0.

+

+  @retval TRUE  The required DTPM instance is equal to gEfiTpmDeviceInstanceTpm20DtpmGuid.

+  @retval FALSE The required DTPM instance is not equal to gEfiTpmDeviceInstanceTpm20DtpmGuid.

+**/

+BOOLEAN

+IsTpm20Dtpm (

+  VOID

+  )

+{

+  return CompareGuid (PcdGetPtr (PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm20DtpmGuid);

+}

+

+/**

   The driver's entry point.

 

   It install callbacks for TPM physical presence and MemoryClear, and locate