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 SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7
   8 **/
   9 #include <PiDxe.h>
  10
  11 #include <Protocol/DevicePath.h>
  12 #include <Protocol/EmuThunk.h>
  13
  14 #include <Library/DebugLib.h>
  15 #include <Library/UefiLib.h>
  16 #include <Library/UefiDriverEntryPoint.h>
  17 #include <Library/EmuThunkLib.h>
  18 #include <Library/MemoryAllocationLib.h>
  19 #include <Library/UefiBootServicesTableLib.h>
  20 #include <Library/DevicePathLib.h>
  21
  22 //
  23 // EmuThunk Device Path Protocol Instance
  24 //
  25 EMU_THUNK_DEVICE_PATH  mEmuThunkDevicePath = {
  26   {
  27     {
  28       {
  29         HARDWARE_DEVICE_PATH,
  30         HW_VENDOR_DP,
  31         {
  32           (UINT8)(sizeof (EMU_VENDOR_DEVICE_PATH_NODE)),
  33           (UINT8)((sizeof (EMU_VENDOR_DEVICE_PATH_NODE)) >> 8)
  34         }
  35       },
  36       EMU_THUNK_PROTOCOL_GUID
  37     },
  38     0
  39   },
  40   {
  41     END_DEVICE_PATH_TYPE,
  42     END_ENTIRE_DEVICE_PATH_SUBTYPE,
  43     {
  44       END_DEVICE_PATH_LENGTH,
  45       0
  46     }
  47   }
  48 };
  49
  50 EFI_STATUS
  51 EFIAPI
  52 InitializeEmuThunk (
  53   IN EFI_HANDLE        ImageHandle,
  54   IN EFI_SYSTEM_TABLE  *SystemTable
  55   )
  56
  57 /*++
  58
  59 Routine Description:
  60   Install UnixThunk Protocol and it's associated Device Path protocol
  61
  62 Arguments:
  63   (Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)
  64
  65 Returns:
  66   EFI_SUCEESS - UnixThunk protocol is added or error status from
  67                 gBS->InstallMultiProtocolInterfaces().
  68
  69 **/
  70 {
  71   EFI_STATUS  Status;
  72   EFI_HANDLE  Handle;
  73
  74   Handle = NULL;
  75   Status = gBS->InstallMultipleProtocolInterfaces (
  76                   &Handle,
  77                   &gEmuThunkProtocolGuid,
  78                   gEmuThunk,
  79                   &gEfiDevicePathProtocolGuid,
  80                   &mEmuThunkDevicePath,
  81                   NULL
  82                   );
  83
  84   return Status;
  85 }