ArmPlatformPkg/Library/PrePiHobListPointerLib/PrePiHobListPointer.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011, ARM Limited. All rights reserved.
   4 *
   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
  15 #include <PiPei.h>
  16 #include <Library/ArmPlatformGlobalVariableLib.h>
  17 #include <Library/PrePiHobListPointerLib.h>
  18 #include <Library/DebugLib.h>
  19 #include <Library/PcdLib.h>
  20
  21 /**
  22   Returns the pointer to the HOB list.
  23
  24   This function returns the pointer to first HOB in the list.
  25
  26   @return The pointer to the HOB list.
  27
  28 **/
  29 VOID *
  30 EFIAPI
  31 PrePeiGetHobList (
  32   VOID
  33   )
  34 {
  35   VOID* HobList;
  36
  37   ArmPlatformGetGlobalVariable (PcdGet32 (PcdHobListPtrGlobalOffset), sizeof(VOID*), &HobList);
  38
  39   return HobList;
  40 }
  41
  42
  43
  44 /**
  45   Updates the pointer to the HOB list.
  46
  47   @param  HobList       Hob list pointer to store
  48
  49 **/
  50 EFI_STATUS
  51 EFIAPI
  52 PrePeiSetHobList (
  53   IN  VOID      *HobList
  54   )
  55 {
  56   ArmPlatformSetGlobalVariable (PcdGet32 (PcdHobListPtrGlobalOffset), sizeof(VOID*), &HobList);
  57
  58   return EFI_SUCCESS;
  59 }
  60