Nt32Pkg/Library/PlatformSecureLib/PlatformSecureLib.c

   1 /** @file
   2   Provides a platform-specific method to enable Secure Boot Custom Mode setup.
   3
   4   Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14 #include <Library/PcdLib.h>
  15
  16
  17 /**
  18
  19   This function provides a platform-specific method to detect whether the platform
  20   is operating by a physically present user.
  21
  22   Programmatic changing of platform security policy (such as disable Secure Boot,
  23   or switch between Standard/Custom Secure Boot mode) MUST NOT be possible during
  24   Boot Services or after exiting EFI Boot Services. Only a physically present user
  25   is allowed to perform these operations.
  26
  27   NOTE THAT: This function cannot depend on any EFI Variable Service since they are
  28   not available when this function is called in AuthenticateVariable driver.
  29
  30   @retval  TRUE       The platform is operated by a physically present user.
  31   @retval  FALSE      The platform is NOT operated by a physically present user.
  32
  33 **/
  34 BOOLEAN
  35 EFIAPI
  36 UserPhysicalPresent (
  37   VOID
  38   )
  39 {
  40   return TRUE;
  41 }