Michael D Kinney b26f0cf9ee OvmfPkg: Replace BSD License with BSD+Patent License
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2019-04-09 10:58:19 -07:00

94 lines
2.2 KiB
C

/** @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
);
#endif