InOsEmuPkg/Include/Library/EmuMagicPageLib.h

   1 /*++ @file
   2 The PCD, gInOsEmuPkgTokenSpaceGuid.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 This program and the accompanying materials
   8 are licensed and made available under the terms and conditions of the BSD License
   9 which accompanies this distribution.  The full text of the license may be found at
  10 http://opensource.org/licenses/bsd-license.php
  11
  12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 **/
  16
  17 #ifndef __EMU_MAGIC_PAGE_LIB_H__
  18 #define __EMU_MAGIC_PAGE_LIB_H__
  19
  20 #include <PiPei.h>
  21 #include <Library/PcdLib.h>
  22 #include <Protocol/EmuThunk.h>
  23
  24 typedef struct {
  25   // Used by PEI Core and PEIMs to store the PEI Services pointer.
  26   // Privilege issues prevent using the PI mechanism in the emulator.
  27   CONST EFI_PEI_SERVICES **PeiServicesTablePointer;
  28
  29   // Used by SecPeiServicesLib
  30   EFI_PEI_PPI_DESCRIPTOR  *PpiList;
  31
  32   // Needed by PEI PEI PeCoffLoaderExtraActionLib
  33   EMU_THUNK_PROTOCOL   *Thunk;
  34 } EMU_MAGIC_PAGE_LAYOUT;
  35
  36 #define EMU_MAGIC_PAGE() ((EMU_MAGIC_PAGE_LAYOUT *)((UINTN)PcdGet64 (PcdPeiServicesTablePage)))
  37
  38 #endif