ArmVirtPkg/TPM: Add a NULL implementation of TpmPlatformHierarchyLib

Add a NULL implementation of the library class TpmPlatformHierarchyLib.

Link: https://bugzilla.tianocore.org/show_bug.cgi?id=3510
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>

SecurityPkg/Library/PeiDxeTpmPlatformHierarchyLibNull/PeiDxeTpmPlatformHierarchyLib.c

@@ -0,0 +1,22 @@
+/** @file
+    Null TPM Platform Hierarchy configuration library.
+
+    This library provides stub functions for customizing the TPM's Platform Hierarchy.
+
+    Copyright (c) 2021, IBM Corporation.
+    SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi.h>
+
+/**
+  A NULL implementation of ConfigureTpmPlatformHierarchy.
+**/
+VOID
+EFIAPI
+ConfigureTpmPlatformHierarchy (
+  )
+{
+  /* do nothing */
+}

SecurityPkg/Library/PeiDxeTpmPlatformHierarchyLibNull/PeiDxeTpmPlatformHierarchyLib.inf

@@ -0,0 +1,31 @@
+### @file
+#   NULL TPM Platform Hierarchy configuration library.
+#
+#   This library provides functions for customizing the TPM's Platform Hierarchy
+#   Authorization Value (platformAuth) and Platform Hierarchy Authorization
+#   Policy (platformPolicy) can be defined through this function.
+#
+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) Microsoft Corporation.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+###
+
+[Defines]
+  INF_VERSION                    = 1.27
+  BASE_NAME                      = BasePlatform
+  FILE_GUID                      = 8947A3F2-BfB4-45EF-968D-5C40C1CE6A58
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = TpmPlatformHierarchyLib|PEIM DXE_DRIVER
+
+[LibraryClasses]
+  BaseLib
+
+[Packages]
+  MdePkg/MdePkg.dec
+  SecurityPkg/SecurityPkg.dec
+
+[Sources]
+  PeiDxeTpmPlatformHierarchyLib.c

SecurityPkg/SecurityPkg.dsc

@@ -232,6 +232,7 @@
   SecurityPkg/Library/HashLibTpm2/HashLibTpm2.inf
 
   SecurityPkg/Library/PeiDxeTpmPlatformHierarchyLib/PeiDxeTpmPlatformHierarchyLib.inf
+  SecurityPkg/Library/PeiDxeTpmPlatformHierarchyLibNull/PeiDxeTpmPlatformHierarchyLib.inf
 
   #
   # TCG Storage.