MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.c

   1 /** @file
   2   Entry point to the DXE Core.
   3
   4 Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
   5 SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9
  10 #include <PiDxe.h>
  11
  12
  13 #include <Library/DxeCoreEntryPoint.h>
  14 #include <Library/DebugLib.h>
  15 #include <Library/BaseLib.h>
  16
  17 //
  18 // Cache copy of HobList pointer.
  19 //
  20 VOID *gHobList = NULL;
  21
  22 /**
  23   The entry point of PE/COFF Image for the DXE Core.
  24
  25   This function is the entry point for the DXE Core. This function is required to call
  26   ProcessModuleEntryPointList() and ProcessModuleEntryPointList() is never expected to return.
  27   The DXE Core is responsible for calling ProcessLibraryConstructorList() as soon as the EFI
  28   System Table and the image handle for the DXE Core itself have been established.
  29   If ProcessModuleEntryPointList() returns, then ASSERT() and halt the system.
  30
  31   @param  HobStart  The pointer to the beginning of the HOB List passed in from the PEI Phase.
  32
  33 **/
  34 VOID
  35 EFIAPI
  36 _ModuleEntryPoint (
  37   IN VOID  *HobStart
  38   )
  39 {
  40   //
  41   // Cache a pointer to the HobList
  42   //
  43   gHobList = HobStart;
  44
  45   //
  46   // Call the DXE Core entry point
  47   //
  48   ProcessModuleEntryPointList (HobStart);
  49
  50   //
  51   // Should never return
  52   //
  53   ASSERT(FALSE);
  54   CpuDeadLoop ();
  55 }
  56
  57
  58 /**
  59   Required by the EBC compiler and identical in functionality to _ModuleEntryPoint().
  60
  61   This function is required to call _ModuleEntryPoint() passing in HobStart.
  62
  63   @param  HobStart  The pointer to the beginning of the HOB List passed in from the PEI Phase.
  64
  65 **/
  66 VOID
  67 EFIAPI
  68 EfiMain (
  69   IN VOID  *HobStart
  70   )
  71 {
  72   _ModuleEntryPoint (HobStart);
  73 }