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/** @file
OVMF support for QEMU system firmware flash device
Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
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 __QEMU_FLASH_H__
#define __QEMU_FLASH_H__
#include <Protocol/FirmwareVolumeBlock.h>
/**
Read from QEMU Flash
@param[in] Lba The starting logical block index to read from.
@param[in] Offset Offset into the block at which to begin reading.
@param[in] NumBytes On input, indicates the requested read size. On
output, indicates the actual number of bytes read
@param[in] Buffer Pointer to the buffer to read into.
**/
EFI_STATUS
QemuFlashRead (
IN EFI_LBA Lba,
IN UINTN Offset,
IN UINTN *NumBytes,
IN UINT8 *Buffer
);
/**
Write to QEMU Flash
@param[in] Lba The starting logical block index to write to.
@param[in] Offset Offset into the block at which to begin writing.
@param[in] NumBytes On input, indicates the requested write size. On
output, indicates the actual number of bytes written
@param[in] Buffer Pointer to the data to write.
**/
EFI_STATUS
QemuFlashWrite (
IN EFI_LBA Lba,
IN UINTN Offset,
IN UINTN *NumBytes,
IN UINT8 *Buffer
);
/**
Erase a QEMU Flash block
@param Lba The logical block index to erase.
**/
EFI_STATUS
QemuFlashEraseBlock (
IN EFI_LBA Lba
);
/**
Initializes QEMU flash memory support
@retval EFI_WRITE_PROTECTED The QEMU flash device is not present.
@retval EFI_SUCCESS The QEMU flash device is supported.
**/
EFI_STATUS
QemuFlashInitialize (
VOID
);
VOID
QemuFlashConvertPointers (
VOID
);
#endif
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