SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/SmmTcg2PhysicalPresenceLib.c

   1 /** @file
   2   Handle TPM 2.0 physical presence requests from OS.
   3
   4   This library will handle TPM 2.0 physical presence request from OS.
   5
   6   Caution: This module requires additional review when modified.
   7   This driver will have external input - variable.
   8   This external input must be validated carefully to avoid security issue.
   9
  10   Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction() and Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction()
  11   will receive untrusted input and do validation.
  12
  13 Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>
  14 SPDX-License-Identifier: BSD-2-Clause-Patent
  15
  16 **/
  17
  18 #include <PiSmm.h>
  19
  20 #include "MmTcg2PhysicalPresenceLibCommon.h"
  21
  22 /**
  23   The constructor function locates SmmVariable protocol.
  24
  25   It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.
  26
  27   @param  ImageHandle   The firmware allocated handle for the EFI image.
  28   @param  SystemTable   A pointer to the EFI System Table.
  29
  30   @retval EFI_SUCCESS   The constructor successfully added string package.
  31   @retval Other value   The constructor can't add string package.
  32 **/
  33 EFI_STATUS
  34 EFIAPI
  35 Tcg2PhysicalPresenceLibTraditionalConstructor (
  36   IN EFI_HANDLE        ImageHandle,
  37   IN EFI_SYSTEM_TABLE  *SystemTable
  38   )
  39 {
  40   return Tcg2PhysicalPresenceLibCommonConstructor ();
  41 }