EmulatorPkg/Include/Library/EmuMagicPageLib.h

   1 /*++ @file
   2 The PCD, gEmulatorPkgTokenSpaceGuid.PcdPeiServicesTablePage, points to a magic page
   3 of memory that is like SRAM on an embedded system. This file defines what goes
   4 where in the magic page.
   5
   6 Copyright (c) 2011, Apple Inc. All rights reserved.<BR>
   7 SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9 **/
  10
  11 #ifndef __EMU_MAGIC_PAGE_LIB_H__
  12 #define __EMU_MAGIC_PAGE_LIB_H__
  13
  14 #include <PiPei.h>
  15 #include <Library/PcdLib.h>
  16 #include <Protocol/EmuThunk.h>
  17
  18 typedef struct {
  19   // Used by PEI Core and PEIMs to store the PEI Services pointer.
  20   // Privilege issues prevent using the PI mechanism in the emulator.
  21   CONST EFI_PEI_SERVICES **PeiServicesTablePointer;
  22
  23   // Used by SecPeiServicesLib
  24   EFI_PEI_PPI_DESCRIPTOR  *PpiList;
  25
  26   // Needed by PEI PEI PeCoffLoaderExtraActionLib
  27   EMU_THUNK_PROTOCOL   *Thunk;
  28 } EMU_MAGIC_PAGE_LAYOUT;
  29
  30 #define EMU_MAGIC_PAGE() ((EMU_MAGIC_PAGE_LAYOUT *)((UINTN)PcdGet64 (PcdPeiServicesTablePage)))
  31
  32 #endif