mirror of https://github.com/acidanthera/audk.git
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/** @file
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OVMF support for QEMU system firmware flash device
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Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __QEMU_FLASH_H__
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#define __QEMU_FLASH_H__
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#include <Protocol/FirmwareVolumeBlock.h>
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extern UINT8 *mFlashBase;
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/**
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Read from QEMU Flash
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@param[in] Lba The starting logical block index to read from.
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@param[in] Offset Offset into the block at which to begin reading.
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@param[in] NumBytes On input, indicates the requested read size. On
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output, indicates the actual number of bytes read
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@param[in] Buffer Pointer to the buffer to read into.
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**/
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EFI_STATUS
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QemuFlashRead (
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN UINTN *NumBytes,
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IN UINT8 *Buffer
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);
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/**
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Write to QEMU Flash
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@param[in] Lba The starting logical block index to write to.
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@param[in] Offset Offset into the block at which to begin writing.
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@param[in] NumBytes On input, indicates the requested write size. On
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output, indicates the actual number of bytes written
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@param[in] Buffer Pointer to the data to write.
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**/
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EFI_STATUS
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QemuFlashWrite (
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN UINTN *NumBytes,
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IN UINT8 *Buffer
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);
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/**
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Erase a QEMU Flash block
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@param Lba The logical block index to erase.
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**/
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EFI_STATUS
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QemuFlashEraseBlock (
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IN EFI_LBA Lba
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);
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/**
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Initializes QEMU flash memory support
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@retval EFI_WRITE_PROTECTED The QEMU flash device is not present.
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@retval EFI_SUCCESS The QEMU flash device is supported.
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**/
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EFI_STATUS
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QemuFlashInitialize (
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VOID
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);
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VOID
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QemuFlashConvertPointers (
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VOID
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);
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VOID
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QemuFlashBeforeProbe (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINTN FdBlockSize,
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IN UINTN FdBlockCount
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);
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/**
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Write to QEMU Flash
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@param[in] Ptr Pointer to the location to write.
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@param[in] Value The value to write.
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**/
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VOID
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QemuFlashPtrWrite (
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IN volatile UINT8 *Ptr,
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IN UINT8 Value
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);
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#endif
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