ArmPlatformPkg: Introduce ArmPlatformGlobalVariableLib

[mirror_edk2.git] / ArmPlatformPkg / Library / PrePiHobListPointerLib / PrePiHobListPointer.c

/** @file\r
*\r
*  Copyright (c) 2011, ARM Limited. All rights reserved.\r
*  \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
#include <PiPei.h>\r
#include <Library/ArmPlatformGlobalVariableLib.h>\r
#include <Library/PrePiHobListPointerLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/PcdLib.h>\r
\r
/**\r
  Returns the pointer to the HOB list.\r
\r
  This function returns the pointer to first HOB in the list.\r
\r
  @return The pointer to the HOB list.\r
\r
**/\r
VOID *\r
EFIAPI\r
PrePeiGetHobList (\r
  VOID\r
  )\r
{\r
  VOID* HobList;\r
\r
  ArmPlatformGetGlobalVariable (PcdGet32 (PcdHobListPtrGlobalOffset), sizeof(VOID*), &HobList);\r
\r
  return HobList;\r
}\r
\r
\r
\r
/**\r
  Updates the pointer to the HOB list.\r
\r
  @param  HobList       Hob list pointer to store\r
  \r
**/\r
EFI_STATUS\r
EFIAPI\r
PrePeiSetHobList (\r
  IN  VOID      *HobList\r
  )\r
{\r
  ArmPlatformSetGlobalVariable (PcdGet32 (PcdHobListPtrGlobalOffset), sizeof(VOID*), &HobList);\r
\r
  return EFI_SUCCESS;\r
}\r
\r