mirror of https://github.com/acidanthera/audk.git
99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
/** @file
|
|
This file defines the data structures that comprise the FFS file system.
|
|
|
|
Copyright (c) 2006, Intel Corporation
|
|
All rights reserved. This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
Module Name: FirmwareFileSystem.h
|
|
|
|
@par Revision Reference:
|
|
These definitions are from Firmware File System Spec 0.9.
|
|
|
|
**/
|
|
|
|
#ifndef __EFI_FFS_FILE_SYSTEM_H__
|
|
#define __EFI_FFS_FILE_SYSTEM_H__
|
|
|
|
///
|
|
/// FFS specific file types
|
|
///
|
|
#define EFI_FV_FILETYPE_FFS_PAD 0xF0
|
|
|
|
//
|
|
// FFS File Attributes
|
|
//
|
|
#define FFS_ATTRIB_TAIL_PRESENT 0x01
|
|
#define FFS_ATTRIB_RECOVERY 0x02
|
|
#define FFS_ATTRIB_HEADER_EXTENSION 0x04
|
|
#define FFS_ATTRIB_DATA_ALIGNMENT 0x38
|
|
#define FFS_ATTRIB_CHECKSUM 0x40
|
|
|
|
///
|
|
/// FFS_FIXED_CHECKSUM is the default checksum value used when the
|
|
/// FFS_ATTRIB_CHECKSUM attribute bit is clear
|
|
/// note this is NOT an architecturally defined value, but is in this file for
|
|
/// implementation convenience
|
|
///
|
|
#define FFS_FIXED_CHECKSUM 0x5A
|
|
|
|
//
|
|
// File state definitions
|
|
//
|
|
#define EFI_FILE_HEADER_CONSTRUCTION 0x01
|
|
#define EFI_FILE_HEADER_VALID 0x02
|
|
#define EFI_FILE_DATA_VALID 0x04
|
|
#define EFI_FILE_MARKED_FOR_UPDATE 0x08
|
|
#define EFI_FILE_DELETED 0x10
|
|
#define EFI_FILE_HEADER_INVALID 0x20
|
|
|
|
#define EFI_FILE_ALL_STATE_BITS (EFI_FILE_HEADER_CONSTRUCTION | \
|
|
EFI_FILE_HEADER_VALID | \
|
|
EFI_FILE_DATA_VALID | \
|
|
EFI_FILE_MARKED_FOR_UPDATE | \
|
|
EFI_FILE_DELETED | \
|
|
EFI_FILE_HEADER_INVALID \
|
|
)
|
|
|
|
#define EFI_TEST_FFS_ATTRIBUTES_BIT(FvbAttributes, TestAttributes, Bit) \
|
|
( \
|
|
(BOOLEAN) ( \
|
|
(FvbAttributes & EFI_FVB_ERASE_POLARITY) ? (((~TestAttributes) & Bit) == Bit) : ((TestAttributes & Bit) == Bit) \
|
|
) \
|
|
)
|
|
|
|
typedef UINT16 EFI_FFS_FILE_TAIL;
|
|
|
|
///
|
|
/// FFS file integrity check structure
|
|
///
|
|
typedef union {
|
|
struct {
|
|
UINT8 Header;
|
|
UINT8 File;
|
|
} Checksum;
|
|
UINT16 TailReference;
|
|
} EFI_FFS_INTEGRITY_CHECK;
|
|
|
|
//
|
|
// FFS file header definition
|
|
//
|
|
typedef UINT8 EFI_FFS_FILE_ATTRIBUTES;
|
|
typedef UINT8 EFI_FFS_FILE_STATE;
|
|
|
|
typedef struct {
|
|
EFI_GUID Name;
|
|
EFI_FFS_INTEGRITY_CHECK IntegrityCheck;
|
|
EFI_FV_FILETYPE Type;
|
|
EFI_FFS_FILE_ATTRIBUTES Attributes;
|
|
UINT8 Size[3];
|
|
EFI_FFS_FILE_STATE State;
|
|
} EFI_FFS_FILE_HEADER;
|
|
|
|
#endif
|