EmulatorPkg/EmuThunkDxe/EmuThunk.c

   1 /*++ @file
   2
   3 Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
   4 Portions copyright (c) 2011, Apple Inc. All rights reserved.
   5 This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13
  14 **/
  15 #include <PiDxe.h>
  16
  17 #include <Protocol/DevicePath.h>
  18 #include <Protocol/EmuThunk.h>
  19
  20 #include <Library/DebugLib.h>
  21 #include <Library/UefiLib.h>
  22 #include <Library/UefiDriverEntryPoint.h>
  23 #include <Library/EmuThunkLib.h>
  24 #include <Library/MemoryAllocationLib.h>
  25 #include <Library/UefiBootServicesTableLib.h>
  26 #include <Library/DevicePathLib.h>
  27
  28 //
  29 // EmuThunk Device Path Protocol Instance
  30 //
  31 EMU_THUNK_DEVICE_PATH mEmuThunkDevicePath = {
  32   {
  33     {
  34       {
  35         HARDWARE_DEVICE_PATH,
  36         HW_VENDOR_DP,
  37         {
  38           (UINT8) (sizeof (EMU_VENDOR_DEVICE_PATH_NODE)),
  39           (UINT8) ((sizeof (EMU_VENDOR_DEVICE_PATH_NODE)) >> 8)
  40         }
  41       },
  42       EMU_THUNK_PROTOCOL_GUID
  43     },
  44     0
  45   },
  46   {
  47     END_DEVICE_PATH_TYPE,
  48     END_ENTIRE_DEVICE_PATH_SUBTYPE,
  49     {
  50       END_DEVICE_PATH_LENGTH,
  51       0
  52     }
  53   }
  54 };
  55
  56
  57 EFI_STATUS
  58 EFIAPI
  59 InitializeEmuThunk (
  60   IN EFI_HANDLE                            ImageHandle,
  61   IN EFI_SYSTEM_TABLE                      *SystemTable
  62   )
  63 /*++
  64
  65 Routine Description:
  66   Install UnixThunk Protocol and it's associated Device Path protocol
  67
  68 Arguments:
  69   (Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)
  70
  71 Returns:
  72   EFI_SUCEESS - UnixThunk protocol is added or error status from
  73                 gBS->InstallMultiProtocolInterfaces().
  74
  75 **/
  76 {
  77   EFI_STATUS  Status;
  78   EFI_HANDLE  Handle;
  79
  80   Handle = NULL;
  81   Status = gBS->InstallMultipleProtocolInterfaces (
  82                   &Handle,
  83                   &gEmuThunkProtocolGuid,       gEmuThunk,
  84                   &gEfiDevicePathProtocolGuid,  &mEmuThunkDevicePath,
  85                   NULL
  86                   );
  87
  88   return Status;
  89 }