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/**@file
Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
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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