ShellPkg/DynamicCommand: Fix bug that cannot start in boot

[mirror_edk2.git] / EmulatorPkg / EmuThunkDxe / EmuThunk.c

/*++ @file\r
\r
Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
Portions copyright (c) 2011, Apple Inc. All rights reserved.\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
\r
**/\r
#include <PiDxe.h>\r
\r
#include <Protocol/DevicePath.h>\r
#include <Protocol/EmuThunk.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/EmuThunkLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/DevicePathLib.h>\r
\r
//\r
// EmuThunk Device Path Protocol Instance\r
//\r
EMU_THUNK_DEVICE_PATH mEmuThunkDevicePath = {\r
  {\r
    {\r
      {\r
        HARDWARE_DEVICE_PATH,\r
        HW_VENDOR_DP,\r
        {\r
          (UINT8) (sizeof (EMU_VENDOR_DEVICE_PATH_NODE)),\r
          (UINT8) ((sizeof (EMU_VENDOR_DEVICE_PATH_NODE)) >> 8)\r
        }\r
      },\r
      EMU_THUNK_PROTOCOL_GUID\r
    },\r
    0\r
  },\r
  {\r
    END_DEVICE_PATH_TYPE,\r
    END_ENTIRE_DEVICE_PATH_SUBTYPE,\r
    {\r
      END_DEVICE_PATH_LENGTH,\r
      0\r
    }\r
  }\r
};\r
\r
\r
EFI_STATUS\r
EFIAPI\r
InitializeEmuThunk (\r
  IN EFI_HANDLE                            ImageHandle,\r
  IN EFI_SYSTEM_TABLE                      *SystemTable\r
  )\r
/*++\r
\r
Routine Description:\r
  Install UnixThunk Protocol and it's associated Device Path protocol\r
\r
Arguments:\r
  (Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)\r
\r
Returns:\r
  EFI_SUCEESS - UnixThunk protocol is added or error status from\r
                gBS->InstallMultiProtocolInterfaces().\r
\r
**/\r
{\r
  EFI_STATUS  Status;\r
  EFI_HANDLE  Handle;\r
\r
  Handle = NULL;\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &Handle,\r
                  &gEmuThunkProtocolGuid,       gEmuThunk,\r
                  &gEfiDevicePathProtocolGuid,  &mEmuThunkDevicePath,\r
                  NULL\r
                  );\r
\r
  return Status;\r
}\r