b244c7dc74
The major difference between UefiApplicationEntryPoint and UefiDriverEntryPoint is that: 1) UEFI application will always be unloaded no matter what is the return status code from the application. Therefore, the library destructors should be called always. 2) UEFI application should not register any callback to evevnt such as EFI_EVENT_GROUP_VIRTUAL_ADDRESS_CHANGE and EFI_EVENT_GROUP_EXIT_BOOT_SERVICES. 3) UEFI application does not support module merger like Uefi Driver. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2199 6f19259b-4bc3-4df7-8a09-765794883524
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/** @file
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Entry point library instance to a UEFI application.
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Copyright (c) 2007, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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/**
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Enrty point to UEFI application.
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@param ImageHandle ImageHandle of the loaded driver.
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@param SystemTable Pointer to the EFI System Table.
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@retval EFI_SUCCESS One or more of the drivers returned a success code.
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@retval !EFI_SUCESS The return status from the last driver entry point in the list.
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**/
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EFI_STATUS
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EFIAPI
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_ModuleEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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if (_gUefiDriverRevision != 0) {
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//
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// Make sure that the EFI/UEFI spec revision of the platform is >= EFI/UEFI spec revision of the application.
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//
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if (SystemTable->Hdr.Revision < _gUefiDriverRevision) {
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return EFI_INCOMPATIBLE_VERSION;
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}
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}
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//
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// Call constructor for all libraries.
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//
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ProcessLibraryConstructorList (ImageHandle, SystemTable);
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//
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// Call the module's entry point
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//
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Status = ProcessModuleEntryPointList (ImageHandle, SystemTable);
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//
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// Process destructor for all libraries.
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//
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ProcessLibraryDestructorList (ImageHandle, SystemTable);
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//
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// Return the return status code from the driver entry point
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//
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return Status;
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}
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/**
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Invoke the destuctors of all libraries and call gBS->Exit
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to return control to firmware core.
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@param Status Status returned by the application that is exiting.
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@retval VOID
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**/
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VOID
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EFIAPI
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Exit (
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IN EFI_STATUS Status
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)
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{
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ProcessLibraryDestructorList (gImageHandle, gST);
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gBS->Exit (gImageHandle, Status, 0, NULL);
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}
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/**
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Enrty point wrapper of UEFI Application.
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@param ImageHandle ImageHandle of the loaded driver.
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@param SystemTable Pointer to the EFI System Table.
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@retval EFI_SUCCESS One or more of the drivers returned a success code.
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@retval !EFI_SUCESS The return status from the last driver entry point in the list.
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**/
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EFI_STATUS
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EFIAPI
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EfiMain (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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return _ModuleEntryPoint (ImageHandle, SystemTable);
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}
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