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#ifndef _EFI_FS_H
#define _EFI_FS_H
/*++
Copyright (c) 1998 Intel Corporation
Module Name:
efifs.h
Abstract:
EFI File System structures
Revision History
--*/
//
// EFI Partition header (normaly starts in LBA 1)
//
#define EFI_PARTITION_SIGNATURE 0x5053595320494249
#define EFI_PARTITION_REVISION 0x00010001
#define MIN_EFI_PARTITION_BLOCK_SIZE 512
#define EFI_PARTITION_LBA 1
typedef struct _EFI_PARTITION_HEADER {
EFI_TABLE_HEADER Hdr;
UINT32 DirectoryAllocationNumber;
UINT32 BlockSize;
EFI_LBA FirstUsableLba;
EFI_LBA LastUsableLba;
EFI_LBA UnusableSpace;
EFI_LBA FreeSpace;
EFI_LBA RootFile;
EFI_LBA SecutiryFile;
} EFI_PARTITION_HEADER;
//
// File header
//
#define EFI_FILE_HEADER_SIGNATURE 0x454c494620494249
#define EFI_FILE_HEADER_REVISION 0x00010000
#define EFI_FILE_STRING_SIZE 260
typedef struct _EFI_FILE_HEADER {
EFI_TABLE_HEADER Hdr;
UINT32 Class;
UINT32 LBALOffset;
EFI_LBA Parent;
UINT64 FileSize;
UINT64 FileAttributes;
EFI_TIME FileCreateTime;
EFI_TIME FileModificationTime;
EFI_GUID VendorGuid;
CHAR16 FileString[EFI_FILE_STRING_SIZE];
} EFI_FILE_HEADER;
//
// Return the file's first LBAL which is in the same
// logical block as the file header
//
#define EFI_FILE_LBAL(a) ((EFI_LBAL *) (((CHAR8 *) (a)) + (a)->LBALOffset))
#define EFI_FILE_CLASS_FREE_SPACE 1
#define EFI_FILE_CLASS_EMPTY 2
#define EFI_FILE_CLASS_NORMAL 3
//
// Logical Block Address List - the fundemental block
// description structure
//
#define EFI_LBAL_SIGNATURE 0x4c41424c20494249
#define EFI_LBAL_REVISION 0x00010000
typedef struct _EFI_LBAL {
EFI_TABLE_HEADER Hdr;
UINT32 Class;
EFI_LBA Parent;
EFI_LBA Next;
UINT32 ArraySize;
UINT32 ArrayCount;
} EFI_LBAL;
// Array size
#define EFI_LBAL_ARRAY_SIZE(lbal,offs,blks) \
(((blks) - (offs) - (lbal)->Hdr.HeaderSize) / sizeof(EFI_RL))
//
// Logical Block run-length
//
typedef struct {
EFI_LBA Start;
UINT64 Length;
} EFI_RL;
//
// Return the run-length structure from an LBAL header
//
#define EFI_LBAL_RL(a) ((EFI_RL*) (((CHAR8 *) (a)) + (a)->Hdr.HeaderSize))
#endif
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