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/** @file
OVMF support for QEMU system firmware flash device
Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __QEMU_FLASH_H__
#define __QEMU_FLASH_H__
#include <Protocol/FirmwareVolumeBlock.h>
extern UINT8 *mFlashBase;
/**
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
);
VOID
QemuFlashBeforeProbe (
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINTN FdBlockSize,
IN UINTN FdBlockCount
);
/**
Write to QEMU Flash
@param[in] Ptr Pointer to the location to write.
@param[in] Value The value to write.
**/
VOID
QemuFlashPtrWrite (
IN volatile UINT8 *Ptr,
IN UINT8 Value
);
#endif
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