| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame] | 1 | /** @file
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| 2 | OVMF support for QEMU system firmware flash device
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| 3 |
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| 4 | Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
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| 5 | This program and the accompanying materials
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| 6 | are licensed and made available under the terms and conditions of the BSD License
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| 7 | which accompanies this distribution. The full text of the license may be found at
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| 8 | http://opensource.org/licenses/bsd-license.php
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| 9 |
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| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 12 |
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| 13 | **/
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| 14 |
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| 15 | #ifndef __QEMU_FLASH_H__
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| 16 | #define __QEMU_FLASH_H__
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| 17 |
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| 18 | #include <Protocol/FirmwareVolumeBlock.h>
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| 19 |
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| 20 | /**
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| 21 | Read from QEMU Flash
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| 22 |
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| 23 | @param[in] Lba The starting logical block index to read from.
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| 24 | @param[in] Offset Offset into the block at which to begin reading.
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| 25 | @param[in] NumBytes On input, indicates the requested read size. On
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| 26 | output, indicates the actual number of bytes read
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| 27 | @param[in] Buffer Pointer to the buffer to read into.
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| 28 |
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| 29 | **/
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| 30 | EFI_STATUS
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| 31 | QemuFlashRead (
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| 32 | IN EFI_LBA Lba,
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| 33 | IN UINTN Offset,
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| 34 | IN UINTN *NumBytes,
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| 35 | IN UINT8 *Buffer
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| 36 | );
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| 37 |
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| 38 |
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| 39 | /**
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| 40 | Write to QEMU Flash
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| 41 |
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| 42 | @param[in] Lba The starting logical block index to write to.
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| 43 | @param[in] Offset Offset into the block at which to begin writing.
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| 44 | @param[in] NumBytes On input, indicates the requested write size. On
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| 45 | output, indicates the actual number of bytes written
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| 46 | @param[in] Buffer Pointer to the data to write.
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| 47 |
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| 48 | **/
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| 49 | EFI_STATUS
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| 50 | QemuFlashWrite (
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| 51 | IN EFI_LBA Lba,
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| 52 | IN UINTN Offset,
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| 53 | IN UINTN *NumBytes,
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| 54 | IN UINT8 *Buffer
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| 55 | );
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| 56 |
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| 57 |
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| 58 | /**
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| 59 | Erase a QEMU Flash block
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| 60 |
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| 61 | @param Lba The logical block index to erase.
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| 62 |
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| 63 | **/
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| 64 | EFI_STATUS
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| 65 | QemuFlashEraseBlock (
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| 66 | IN EFI_LBA Lba
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| 67 | );
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| 68 |
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| 69 |
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| 70 | /**
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| 71 | Initializes QEMU flash memory support
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| 72 |
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| 73 | @retval EFI_WRITE_PROTECTED The QEMU flash device is not present.
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| 74 | @retval EFI_SUCCESS The QEMU flash device is supported.
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| 75 |
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| 76 | **/
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| 77 | EFI_STATUS
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| 78 | QemuFlashInitialize (
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| 79 | VOID
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| 80 | );
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| 81 |
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| 82 |
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| 83 | VOID
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| 84 | QemuFlashConvertPointers (
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| 85 | VOID
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| 86 | );
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| 87 |
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| 88 | #endif
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| 89 |
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