ArmPlatformPkg/Library/PrePiHobListPointerLib/PrePiHobListPointer.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011, ARM Limited. All rights reserved.
   4 *
   5 *  SPDX-License-Identifier: BSD-2-Clause-Patent
   6 *
   7 **/
   8
   9 #include <PiPei.h>
  10 #include <Library/ArmLib.h>
  11 #include <Library/PrePiHobListPointerLib.h>
  12 #include <Library/DebugLib.h>
  13
  14 /**
  15   Returns the pointer to the HOB list.
  16
  17   This function returns the pointer to first HOB in the list.
  18
  19   @return The pointer to the HOB list.
  20
  21 **/
  22 VOID *
  23 EFIAPI
  24 PrePeiGetHobList (
  25   VOID
  26   )
  27 {
  28   return (VOID *)ArmReadTpidrurw();
  29 }
  30
  31
  32
  33 /**
  34   Updates the pointer to the HOB list.
  35
  36   @param  HobList       Hob list pointer to store
  37
  38 **/
  39 EFI_STATUS
  40 EFIAPI
  41 PrePeiSetHobList (
  42   IN  VOID      *HobList
  43   )
  44 {
  45   ArmWriteTpidrurw((UINTN)HobList);
  46
  47   return EFI_SUCCESS;
  48 }