X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=SecurityPkg%2FLibrary%2FPlatformSecureLibNull%2FPlatformSecureLibNull.c;h=c5a9d676c44a1676872bcc4f9c7a08e409235ba2;hp=f222e7cb42e55972c69006c80444810984e3a1c8;hb=HEAD;hpb=3c48e853eb6e6e85a4429b717620cfa9a5218867

diff --git a/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.c b/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.c
index f222e7cb42..b350b04ebd 100644
--- a/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.c
+++ b/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.c
@@ -1,21 +1,22 @@
 /** @file
-  Provides a secure platform-specific method to detect physically present user.
+  NULL PlatformSecureLib instance does NOT really detect whether a physical present
+  user exists but return TRUE directly. This instance can be used to verify security
+  related features during platform enabling and development. It should be replaced
+  by a platform-specific method(e.g. Button pressed) in a real platform for product.
 
-Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials 
-are licensed and made available under the terms and conditions of the BSD License 
-which accompanies this distribution.  The full text of the license may be found at 
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
 
+#include <Uefi/UefiBaseType.h>
+
+BOOLEAN  mUserPhysicalPresence = FALSE;
+
 /**
 
   This function provides a platform-specific method to detect whether the platform
-  is operating by a physically present user. 
+  is operating by a physically present user.
 
   Programmatic changing of platform security policy (such as disable Secure Boot,
   or switch between Standard/Custom Secure Boot mode) MUST NOT be possible during
@@ -24,7 +25,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
   NOTE THAT: This function cannot depend on any EFI Variable Service since they are
   not available when this function is called in AuthenticateVariable driver.
-  
+
   @retval  TRUE       The platform is operated by a physically present user.
   @retval  FALSE      The platform is NOT operated by a physically present user.
 
@@ -35,5 +36,22 @@ UserPhysicalPresent (
   VOID
   )
 {
-  return TRUE;
+  return mUserPhysicalPresence;
+}
+
+/**
+  Save user physical presence state from a PCD to mUserPhysicalPresence.
+
+  @retval  EFI_SUCCESS          PcdUserPhysicalPresence is got successfully.
+
+**/
+RETURN_STATUS
+EFIAPI
+PlatformSecureLibNullConstructor (
+  VOID
+  )
+{
+  mUserPhysicalPresence = PcdGetBool (PcdUserPhysicalPresence);
+
+  return RETURN_SUCCESS;
 }