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   Updates the pointer to the HOB list.
  33
  34   @param  HobList       Hob list pointer to store
  35
  36 **/
  37 EFI_STATUS
  38 EFIAPI
  39 PrePeiSetHobList (
  40   IN  VOID  *HobList
  41   )
  42 {
  43   ArmWriteTpidrurw ((UINTN)HobList);
  44
  45   return EFI_SUCCESS;
  46 }