--- /dev/null
+/** @file\r
+ Null instance of Platform Sec Lib.\r
+\r
+ Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>\r
+ This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php.\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include <PiPei.h>\r
+#include <Library/FspCommonLib.h>\r
+\r
+/**\r
+ This function check the signture of UPD.\r
+\r
+ @param[in] ApiIdx Internal index of the FSP API.\r
+ @param[in] ApiParam Parameter of the FSP API.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+FspUpdSignatureCheck (\r
+ IN UINT32 ApiIdx,\r
+ IN VOID *ApiParam\r
+ )\r
+{\r
+ return EFI_SUCCESS;\r
+}\r