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/**@file
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
WinNtThunk.c
Abstract:
Produce WinNtThunk protocol and it's associated device path and controller
state protocols. WinNtThunk is to the NT emulation environment as
PCI_ROOT_BRIGE is to real hardware. The WinNtBusDriver is the child of this
driver.
Since we are a root hardware abstraction we do not install a Driver Binding
protocol on this handle. This driver can only support one one WinNtThunk protocol
in the system, since the device path is hard coded.
**/
//
// The package level header files this module uses
//
#include <Uefi.h>
#include <WinNtDxe.h>
//
// The protocols, PPI and GUID defintions for this module
//
#include <Protocol/WinNtThunk.h>
#include <Protocol/DevicePath.h>
//
// The Library classes this module consumes
//
#include <Library/UefiDriverEntryPoint.h>
#include <Library/WinNtLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DevicePathLib.h>
#include "WinNtThunk.h"
//
// WinNtThunk Device Path Protocol Instance
//
WIN_NT_THUNK_DEVICE_PATH mWinNtThunkDevicePath = {
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
(UINT8) (sizeof (VENDOR_DEVICE_PATH)),
(UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8),
EFI_WIN_NT_THUNK_PROTOCOL_GUID,
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
END_DEVICE_PATH_LENGTH,
0
}
};
EFI_STATUS
EFIAPI
InitializeWinNtThunk (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Install WinNtThunk Protocol and it's associated Device Path protocol
Arguments:
(Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)
Returns:
EFI_SUCEESS - WinNtThunk protocol is added or error status from
gBS->InstallMultiProtocolInterfaces().
--*/
// TODO: ImageHandle - add argument and description to function comment
// TODO: SystemTable - add argument and description to function comment
{
EFI_STATUS Status;
EFI_HANDLE ControllerHandle;
ControllerHandle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (
&ControllerHandle,
&gEfiWinNtThunkProtocolGuid,
gWinNt,
&gEfiDevicePathProtocolGuid,
&mWinNtThunkDevicePath,
NULL
);
return Status;
}
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