/** @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
|
|
