mirror of https://github.com/acidanthera/audk.git
100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/** @file
|
|
Include file for SMM Access2 Protocol on SMM Access Protocol Thunk driver.
|
|
|
|
Copyright (c) 2009 - 2010, 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.
|
|
|
|
**/
|
|
|
|
#ifndef _SMM_ACCESS2_ON_SMM_ACCESS_THUNK_H_
|
|
#define _SMM_ACCESS2_ON_SMM_ACCESS_THUNK_H_
|
|
|
|
#include <PiDxe.h>
|
|
#include <FrameworkSmm.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/UefiDriverEntryPoint.h>
|
|
#include <Protocol/SmmAccess2.h>
|
|
#include <Protocol/SmmAccess.h>
|
|
|
|
/**
|
|
Opens the SMRAM area to be accessible by a boot-service driver.
|
|
|
|
This function "opens" SMRAM so that it is visible while not inside of SMM. The function should
|
|
return EFI_UNSUPPORTED if the hardware does not support hiding of SMRAM. The function
|
|
should return EFI_DEVICE_ERROR if the SMRAM configuration is locked.
|
|
|
|
@param[in] This The EFI_SMM_ACCESS2_PROTOCOL instance.
|
|
|
|
@retval EFI_SUCCESS The operation was successful.
|
|
@retval EFI_UNSUPPORTED The system does not support opening and closing of SMRAM.
|
|
@retval EFI_DEVICE_ERROR SMRAM cannot be opened, perhaps because it is locked.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SmmAccess2Open (
|
|
IN EFI_SMM_ACCESS2_PROTOCOL *This
|
|
);
|
|
|
|
/**
|
|
Inhibits access to the SMRAM.
|
|
|
|
This function "closes" SMRAM so that it is not visible while outside of SMM. The function should
|
|
return EFI_UNSUPPORTED if the hardware does not support hiding of SMRAM.
|
|
|
|
@param[in] This The EFI_SMM_ACCESS2_PROTOCOL instance.
|
|
|
|
@retval EFI_SUCCESS The operation was successful.
|
|
@retval EFI_UNSUPPORTED The system does not support opening and closing of SMRAM.
|
|
@retval EFI_DEVICE_ERROR SMRAM cannot be closed.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SmmAccess2Close (
|
|
IN EFI_SMM_ACCESS2_PROTOCOL *This
|
|
);
|
|
|
|
/**
|
|
Inhibits access to the SMRAM.
|
|
|
|
This function prohibits access to the SMRAM region. This function is usually implemented such
|
|
that it is a write-once operation.
|
|
|
|
@param[in] This The EFI_SMM_ACCESS2_PROTOCOL instance.
|
|
|
|
@retval EFI_SUCCESS The device was successfully locked.
|
|
@retval EFI_UNSUPPORTED The system does not support locking of SMRAM.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SmmAccess2Lock (
|
|
IN EFI_SMM_ACCESS2_PROTOCOL *This
|
|
);
|
|
|
|
/**
|
|
Queries the memory controller for the possible regions that will support SMRAM.
|
|
|
|
@param[in] This The EFI_SMM_ACCESS2_PROTOCOL instance.
|
|
@param[in, out] SmramMapSize A pointer to the size, in bytes, of the SmramMemoryMap buffer.
|
|
@param[in, out] SmramMap A pointer to the buffer in which firmware places the current memory map.
|
|
|
|
@retval EFI_SUCCESS The chipset supported the given resource.
|
|
@retval EFI_BUFFER_TOO_SMALL The SmramMap parameter was too small. The current buffer size
|
|
needed to hold the memory map is returned in SmramMapSize.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SmmAccess2GetCapabilities (
|
|
IN CONST EFI_SMM_ACCESS2_PROTOCOL *This,
|
|
IN OUT UINTN *SmramMapSize,
|
|
IN OUT EFI_SMRAM_DESCRIPTOR *SmramMap
|
|
);
|
|
|
|
#endif
|