ArmPkg/ArmMmuLib ARM: fix thinko in second level page table handling

[mirror_edk2.git] / SecurityPkg / Include / Library / PlatformSecureLib.h

/** @file\r
  Provides a secure platform-specific method to detect physically present user.\r
\r
Copyright (c) 2011 - 2018, 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
#ifndef __PLATFORM_SECURE_LIB_H__\r
#define __PLATFORM_SECURE_LIB_H__\r
\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
\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
  Boot Services or after exiting EFI Boot Services. Only a physically present user\r
  is allowed to perform these operations.\r
\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
  @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
**/\r
BOOLEAN\r
EFIAPI\r
UserPhysicalPresent (\r
  VOID\r
  );\r
\r
#endif\r