1 /* $FreeBSD$ */ 2 #ifndef _EFI_FS_H 3 #define _EFI_FS_H 4 5 /*++ 6 7 Copyright (c) 1999 - 2002 Intel Corporation. All rights reserved 8 This software and associated documentation (if any) is furnished 9 under a license and may only be used or copied in accordance 10 with the terms of the license. Except as permitted by such 11 license, no part of this software or documentation may be 12 reproduced, stored in a retrieval system, or transmitted in any 13 form or by any means without the express written consent of 14 Intel Corporation. 15 16 Module Name: 17 18 efifs.h 19 20 Abstract: 21 22 EFI File System structures 23 24 25 26 Revision History 27 28 --*/ 29 30 31 // 32 // EFI Partition header (normaly starts in LBA 1) 33 // 34 35 #define EFI_PARTITION_SIGNATURE 0x5053595320494249 36 #define EFI_PARTITION_REVISION 0x00010001 37 #define MIN_EFI_PARTITION_BLOCK_SIZE 512 38 #define EFI_PARTITION_LBA 1 39 40 typedef struct _EFI_PARTITION_HEADER { 41 EFI_TABLE_HEADER Hdr; 42 UINT32 DirectoryAllocationNumber; 43 UINT32 BlockSize; 44 EFI_LBA FirstUsableLba; 45 EFI_LBA LastUsableLba; 46 EFI_LBA UnusableSpace; 47 EFI_LBA FreeSpace; 48 EFI_LBA RootFile; 49 EFI_LBA SecutiryFile; 50 } EFI_PARTITION_HEADER; 51 52 53 // 54 // File header 55 // 56 57 #define EFI_FILE_HEADER_SIGNATURE 0x454c494620494249 58 #define EFI_FILE_HEADER_REVISION 0x00010000 59 #define EFI_FILE_STRING_SIZE 260 60 61 typedef struct _EFI_FILE_HEADER { 62 EFI_TABLE_HEADER Hdr; 63 UINT32 Class; 64 UINT32 LBALOffset; 65 EFI_LBA Parent; 66 UINT64 FileSize; 67 UINT64 FileAttributes; 68 EFI_TIME FileCreateTime; 69 EFI_TIME FileModificationTime; 70 EFI_GUID VendorGuid; 71 CHAR16 FileString[EFI_FILE_STRING_SIZE]; 72 } EFI_FILE_HEADER; 73 74 75 // 76 // Return the file's first LBAL which is in the same 77 // logical block as the file header 78 // 79 80 #define EFI_FILE_LBAL(a) ((EFI_LBAL *) (((CHAR8 *) (a)) + (a)->LBALOffset)) 81 82 #define EFI_FILE_CLASS_FREE_SPACE 1 83 #define EFI_FILE_CLASS_EMPTY 2 84 #define EFI_FILE_CLASS_NORMAL 3 85 86 87 // 88 // Logical Block Address List - the fundemental block 89 // description structure 90 // 91 92 #define EFI_LBAL_SIGNATURE 0x4c41424c20494249 93 #define EFI_LBAL_REVISION 0x00010000 94 95 typedef struct _EFI_LBAL { 96 EFI_TABLE_HEADER Hdr; 97 UINT32 Class; 98 EFI_LBA Parent; 99 EFI_LBA Next; 100 UINT32 ArraySize; 101 UINT32 ArrayCount; 102 } EFI_LBAL; 103 104 // Array size 105 #define EFI_LBAL_ARRAY_SIZE(lbal,offs,blks) \ 106 (((blks) - (offs) - (lbal)->Hdr.HeaderSize) / sizeof(EFI_RL)) 107 108 // 109 // Logical Block run-length 110 // 111 112 typedef struct { 113 EFI_LBA Start; 114 UINT64 Length; 115 } EFI_RL; 116 117 // 118 // Return the run-length structure from an LBAL header 119 // 120 121 #define EFI_LBAL_RL(a) ((EFI_RL*) (((CHAR8 *) (a)) + (a)->Hdr.HeaderSize)) 122 123 #endif 124