MdePkg/Include/Library/UefiDriverEntryPoint.h

   1 /** @file
   2   Module entry point library for UEFI drivers, DXE Drivers, DXE Runtime Drivers,
   3   and DXE SMM Drivers.
   4
   5 Copyright (c) 2006 - 2008, Intel Corporation
   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 #ifndef __MODULE_ENTRY_POINT_H__
  17 #define __MODULE_ENTRY_POINT_H__
  18
  19 ///
  20 /// Declare the EFI/UEFI Specification Revision to which this driver is implemented
  21 ///
  22 extern CONST UINT32                   _gUefiDriverRevision;
  23
  24 ///
  25 /// Declare the number of unload handler in the image.
  26 ///
  27 extern CONST UINT8                    _gDriverUnloadImageCount;
  28
  29
  30 /**
  31   The entry point of PE/COFF Image for a DXE Driver, DXE Runtime Driver, DXE SMM Driver, or UEFI Driver.
  32
  33   This function is the entry point for a DXE Driver, DXE Runtime Driver, DXE SMM Driver,
  34   or UEFI Driver.  This function must call ProcessLibraryConstructorList() and
  35   ProcessModuleEntryPointList(). If the return status from ProcessModuleEntryPointList()
  36   is an error status, then ProcessLibraryDestructorList() must be called. The return value
  37   from ProcessModuleEntryPointList() is returned. If _gDriverUnloadImageCount is greater
  38   than zero, then an unload handler must be registered for this image and the unload handler
  39   must invoke ProcessModuleUnloadList().
  40   If _gUefiDriverRevision is not zero and SystemTable->Hdr.Revision is less than _gUefiDriverRevison,
  41   then return EFI_INCOMPATIBLE_VERSION.
  42
  43
  44   @param  ImageHandle  ImageHandle of the loaded driver.
  45   @param  SystemTable  Pointer to the EFI System Table.
  46
  47   @retval  EFI_SUCCESS               One or more of the drivers returned a success code.
  48   @retval  EFI_INCOMPATIBLE_VERSION  _gUefiDriverRevision is greater than SystemTable->Hdr.Revision.
  49   @retval  Other                     Return value from ProcessModuleEntryPointList().
  50
  51 **/
  52 EFI_STATUS
  53 EFIAPI
  54 _ModuleEntryPoint (
  55   IN EFI_HANDLE        ImageHandle,
  56   IN EFI_SYSTEM_TABLE  *SystemTable
  57   );
  58
  59
  60 /**
  61   Required by the EBC compiler and identical in functionality to _ModuleEntryPoint().
  62
  63   This function is required to call _ModuleEntryPoint() passing in ImageHandle, and SystemTable.
  64
  65   @param  ImageHandle ImageHandle of the loaded driver.
  66   @param  SystemTable Pointer to the EFI System Table.
  67
  68   @retval  EFI_SUCCESS               The DXE Driver, DXE Runtime Driver, DXE SMM Driver,
  69                                      or UEFI Driver exited normally.
  70   @retval  EFI_INCOMPATIBLE_VERSION  _gUefiDriverRevision is greater than SystemTable->Hdr.Revision.
  71   @retval  Other                     Return value from ProcessModuleEntryPointList().
  72 **/
  73 EFI_STATUS
  74 EFIAPI
  75 EfiMain (
  76   IN EFI_HANDLE        ImageHandle,
  77   IN EFI_SYSTEM_TABLE  *SystemTable
  78   );
  79
  80
  81 /**
  82   Invokes the library destructors fror all dependent libraries and terminates the
  83   DXE Driver, DXE Runtime Driver, DXE SMM Driver, or UEFI Driver.
  84
  85   This function calls ProcessLibraryDestructorList() and the EFI Boot Service Exit()
  86   with a status specified by Status.
  87
  88   @param  Status Status returned by the driver that is exiting.
  89
  90 **/
  91 VOID
  92 EFIAPI
  93 ExitDriver (
  94   IN EFI_STATUS  Status
  95   );
  96
  97
  98 /**
  99   Autogenerated function that calls the library constructors for all of the module's
 100   dependent libraries.
 101
 102   This function must be called by _ModuleEntryPoint().
 103   This function calls the set of library constructors for the set of library instances
 104   that a module depends on.  This includes library instances that a module depends on
 105   directly and library instances that a module depends on indirectly through other libraries.
 106   This function is autogenerated by build tools and those build tools are responsible
 107   for collecting the set of library instances, determine which ones have constructors,
 108   and calling the library constructors in the proper order based upon each of the library
 109   instances own dependencies.
 110
 111   @param  ImageHandle ImageHandle of the loaded driver.
 112   @param  SystemTable Pointer to the EFI System Table.
 113
 114 **/
 115 VOID
 116 EFIAPI
 117 ProcessLibraryConstructorList (
 118   IN EFI_HANDLE        ImageHandle,
 119   IN EFI_SYSTEM_TABLE  *SystemTable
 120   );
 121
 122
 123 /**
 124   Autogenerated function that calls the library descructors for all of the module's
 125   dependent libraries.
 126
 127   This function may be called by _ModuleEntryPoint() or ExitDriver().
 128   This function calls the set of library destructors for the set of library instances
 129   that a module depends on. This includes library instances that a module depends on
 130   directly and library instances that a module depends on indirectly through other libraries.
 131   This function is autogenerated by build tools and those build tools are responsible for
 132   collecting the set of library instances, determine which ones have destructors, and calling
 133   the library destructors in the proper order based upon each of the library instances own dependencies.
 134
 135   @param  ImageHandle ImageHandle of the loaded driver.
 136   @param  SystemTable Pointer to the EFI System Table.
 137
 138 **/
 139 VOID
 140 EFIAPI
 141 ProcessLibraryDestructorList (
 142   IN EFI_HANDLE        ImageHandle,
 143   IN EFI_SYSTEM_TABLE  *SystemTable
 144   );
 145
 146
 147 /**
 148   Autogenerated function that calls a set of module entry points.
 149
 150   This function must be called by _ModuleEntryPoint().
 151   This function calls the set of module entry points.
 152   This function is autogenerated by build tools and those build tools are responsible
 153   for collecting the module entry points and calling them in a specified order.
 154
 155   @param  ImageHandle ImageHandle of the loaded driver.
 156   @param  SystemTable Pointer to the EFI System Table.
 157
 158   @retval  EFI_SUCCESS   The UEFI Application executed normally.
 159   @retval  !EFI_SUCCESS  The UEFI Application failed to execute normally.
 160 **/
 161 EFI_STATUS
 162 EFIAPI
 163 ProcessModuleEntryPointList (
 164   IN EFI_HANDLE        ImageHandle,
 165   IN EFI_SYSTEM_TABLE  *SystemTable
 166   );
 167
 168
 169 /**
 170   Autogenerated function that calls a set of module unload handlers.
 171
 172   This function must be called from the unload handler registered by _ModuleEntryPoint().
 173   This function calls the set of module unload handlers.
 174   This function is autogenerated by build tools and those build tools are responsible
 175   for collecting the module unload handlers and calling them in a specified order.
 176
 177   @param  ImageHandle ImageHandle of the loaded driver.
 178
 179   @retval  EFI_SUCCESS  The unoad handlers executed normally.
 180   @retval  !EFI_SUCCESS The unload handlers failed to execute normally.
 181
 182 **/
 183 EFI_STATUS
 184 EFIAPI
 185 ProcessModuleUnloadList (
 186   IN EFI_HANDLE  ImageHandle
 187   );
 188
 189 #endif