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      1 /** @file
      2   Module produces EDK gEfiPrintProtocolGuid for backward compatibility support.
      3 
      4   EDK II retires old EDK Print Protocol and this module produces
      5   gEfiPrintProtocolGuid based on PrintLib:
      6   1) If it links against BasePrintLib in MdePkg, it produces gEfiPrintProtocolGuid
      7      without any prerequisites.
      8   2) If it links against DxePrintLibPrint2Protocol in MdeModulePkg, it produces
      9      gEfiPrintProtocolGuid on top of gEfiPrint2ProtocolGuid.
     10 
     11 Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>
     12 
     13 This program and the accompanying materials
     14 are licensed and made available under the terms and conditions of the BSD License
     15 which accompanies this distribution.  The full text of the license may be found at
     16 http://opensource.org/licenses/bsd-license.php
     17 
     18 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
     19 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
     20 Module Name:
     21 
     22 **/
     23 
     24 #include <PiDxe.h>
     25 
     26 #include <Protocol/Print.h>
     27 #include <Library/PrintLib.h>
     28 #include <Library/UefiBootServicesTableLib.h>
     29 #include <Library/DebugLib.h>
     30 
     31 EFI_HANDLE  mPrintThunkHandle = NULL;
     32 
     33 CONST EFI_PRINT_PROTOCOL mPrintProtocol = {
     34   UnicodeVSPrint,
     35 };
     36 
     37 
     38 /**
     39   The user Entry Point for Print thunk module.
     40 
     41   This is the entry point for Print thunk DXE Driver. It installs the Print Protocol on
     42   top of PrintLib class in MdePkg.
     43 
     44   @param[in] ImageHandle    The firmware allocated handle for the EFI image.
     45   @param[in] SystemTable    A pointer to the EFI System Table.
     46 
     47   @retval EFI_SUCCESS       The entry point is executed successfully.
     48   @retval Others            Some error occurs when executing this entry point.
     49 
     50 **/
     51 EFI_STATUS
     52 EFIAPI
     53 InitPrintThunk (
     54   IN EFI_HANDLE           ImageHandle,
     55   IN EFI_SYSTEM_TABLE     *SystemTable
     56   )
     57 {
     58   EFI_STATUS  Status;
     59 
     60   Status = gBS->InstallMultipleProtocolInterfaces (
     61                   &mPrintThunkHandle,
     62                   &gEfiPrintProtocolGuid, &mPrintProtocol,
     63                   NULL
     64                   );
     65   ASSERT_EFI_ERROR (Status);
     66 
     67   return Status;
     68 }
     69