UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / SecurityPkg / Library / PlatformSecureLibNull / PlatformSecureLibNull.c

diff --git a/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.c b/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.c
index f222e7cb42e55972c69006c80444810984e3a1c8..b350b04ebd90c010cb5f3e183c6422b0308e0313 100644 (file)
--- a/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.c
+++ b/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.c
@@ -1,21 +1,22 @@
 /** @file\r
-  Provides a secure platform-specific method to detect physically present user.\r
+  NULL PlatformSecureLib instance does NOT really detect whether a physical present\r
+  user exists but return TRUE directly. This instance can be used to verify security\r
+  related features during platform enabling and development. It should be replaced\r
+  by a platform-specific method(e.g. Button pressed) in a real platform for product.\r
 \r
-Copyright (c) 2011 - 2012, 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
+Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
+#include <Uefi/UefiBaseType.h>\r
+\r
+BOOLEAN  mUserPhysicalPresence = FALSE;\r
+\r
 /**\r
 \r
   This function provides a platform-specific method to detect whether the platform\r
-  is operating by a physically present user. \r
+  is operating by a physically present user.\r
 \r
   Programmatic changing of platform security policy (such as disable Secure Boot,\r
   or switch between Standard/Custom Secure Boot mode) MUST NOT be possible during\r
@@ -24,7 +25,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 \r
   NOTE THAT: This function cannot depend on any EFI Variable Service since they are\r
   not available when this function is called in AuthenticateVariable driver.\r
-  \r
+\r
   @retval  TRUE       The platform is operated by a physically present user.\r
   @retval  FALSE      The platform is NOT operated by a physically present user.\r
 \r
@@ -35,5 +36,22 @@ UserPhysicalPresent (
   VOID\r
   )\r
 {\r
-  return TRUE;\r
+  return mUserPhysicalPresence;\r
+}\r
+\r
+/**\r
+  Save user physical presence state from a PCD to mUserPhysicalPresence.\r
+\r
+  @retval  EFI_SUCCESS          PcdUserPhysicalPresence is got successfully.\r
+\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+PlatformSecureLibNullConstructor (\r
+  VOID\r
+  )\r
+{\r
+  mUserPhysicalPresence = PcdGetBool (PcdUserPhysicalPresence);\r
+\r
+  return RETURN_SUCCESS;\r
 }\r