MdePkg/Include/Library/PeiServicesTablePointerLib.h

   1 /** @file
   2   PEI Services Table Pointer Library services
   3
   4   Copyright (c) 2006, Intel Corporation
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef __PEI_SERVICES_TABLE_POINTER_LIB_H__
  16 #define __PEI_SERVICES_TABLE_POINTER_LIB_H__
  17
  18 /**
  19   The function returns the pointer to PEI services.
  20
  21   The function returns the pointer to PEI services.
  22   It will ASSERT() if the pointer to PEI services is NULL.
  23
  24   @retval  The pointer to PeiServices.
  25
  26 **/
  27 EFI_PEI_SERVICES **
  28 EFIAPI
  29 GetPeiServicesTablePointer (
  30   VOID
  31   );
  32
  33 /**
  34   The function set the pointer of PEI services immediately preceding the IDT table
  35   according to PI specification.
  36
  37   @param    PeiServicesTablePointer   The address of PeiServices pointer.
  38 **/
  39 VOID
  40 EFIAPI
  41 SetPeiServicesTablePointer (
  42   EFI_PEI_SERVICES ** PeiServicesTablePointer
  43   );
  44
  45 /**
  46   After memory initialization in PEI phase, the IDT table in temporary memory should
  47   be migrated to memory, and the address of PeiServicesPointer also need to be updated
  48   immediately preceding the new IDT table.
  49
  50   @param    PeiServices   The address of PeiServices pointer.
  51 **/
  52 VOID
  53 EFIAPI
  54 MigrateIdtTable (
  55   IN EFI_PEI_SERVICES  **PeiServices
  56   );
  57
  58 #endif
  59