MdePkg/Library/PeimEntryPoint/PeimEntryPoint.c

   1
   2 /** @file
   3   Entry point to a PEIM.
   4
   5 Copyright (c) 2006, Intel Corporation<BR>
   6 All rights reserved. This program and the accompanying materials
   7 are licensed and made available under the terms and conditions of the BSD License
   8 which accompanies this distribution.  The full text of the license may be found at
   9 http://opensource.org/licenses/bsd-license.php
  10
  11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 //
  17 // The package level header files this module uses
  18 //
  19 #include <PiPei.h>
  20 //
  21 // The protocols, PPI and GUID defintions for this module
  22 //
  23 //
  24 // The Library classes this module consumes
  25 //
  26 #include <Library/PeimEntryPoint.h>
  27 #include <Library/DebugLib.h>
  28
  29 /**
  30   Image entry point of Peim.
  31
  32   @param  FfsHeader   Pointer to FFS header the loaded driver.
  33   @param  PeiServices Pointer to the PEI services.
  34
  35   @return  Status returned by entry points of Peims.
  36
  37 **/
  38 EFI_STATUS
  39 EFIAPI
  40 _ModuleEntryPoint (
  41   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  42   IN EFI_PEI_SERVICES          **PeiServices
  43   )
  44 {
  45   if (_gPeimRevision != 0) {
  46     //
  47     // Make sure that the PEI spec revision of the platform is >= PEI spec revision of the driver
  48     //
  49     ASSERT ((*PeiServices)->Hdr.Revision >= _gPeimRevision);
  50   }
  51
  52   //
  53   // Call constructor for all libraries
  54   //
  55   ProcessLibraryConstructorList (FfsHeader, PeiServices);
  56
  57   //
  58   // Call the driver entry point
  59   //
  60   return ProcessModuleEntryPointList (FfsHeader, PeiServices);
  61 }
  62
  63
  64 /**
  65   Wrapper of Peim image entry point.
  66
  67   @param  FfsHeader   Pointer to FFS header the loaded driver.
  68   @param  PeiServices Pointer to the PEI services.
  69
  70   @return  Status returned by entry points of Peims.
  71
  72 **/
  73 EFI_STATUS
  74 EFIAPI
  75 EfiMain (
  76   IN EFI_FFS_FILE_HEADER  *FfsHeader,
  77   IN EFI_PEI_SERVICES     **PeiServices
  78   )
  79 {
  80   return _ModuleEntryPoint (FfsHeader, PeiServices);
  81 }