Add TPM2 implementation.

signed off by: jiewen.yao@intel.com
reviewed by: guo.dong@intel.com

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14687 6f19259b-4bc3-4df7-8a09-765794883524

SecurityPkg/Tcg/TcgSmm/TcgSmm.c

@@ -386,6 +386,11 @@ InitializeTcgSmm (
   EFI_SMM_SW_REGISTER_CONTEXT    SwContext;
   EFI_HANDLE                     SwHandle;
 
+  if (!CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm12Guid)){
+    DEBUG ((EFI_D_ERROR, "No TPM12 instance required!\n"));
+    return EFI_UNSUPPORTED;
+  }
+
   Status = PublishAcpiTable ();
   ASSERT_EFI_ERROR (Status);