1 /* $NetBSD: efifs.h,v 1.1.1.1 2014/04/01 16:16:07 jakllsch Exp $ */ 2 3 #ifndef _EFI_FS_H 4 #define _EFI_FS_H 5 6 /*++ 7 8 Copyright (c) 1998 Intel Corporation 9 10 Module Name: 11 12 efifs.h 13 14 Abstract: 15 16 EFI File System structures 17 18 19 20 Revision History 21 22 --*/ 23 24 25 // 26 // EFI Partition header (normaly starts in LBA 1) 27 // 28 29 #define EFI_PARTITION_SIGNATURE 0x5053595320494249 30 #define EFI_PARTITION_REVISION 0x00010001 31 #define MIN_EFI_PARTITION_BLOCK_SIZE 512 32 #define EFI_PARTITION_LBA 1 33 34 typedef struct _EFI_PARTITION_HEADER { 35 EFI_TABLE_HEADER Hdr; 36 UINT32 DirectoryAllocationNumber; 37 UINT32 BlockSize; 38 EFI_LBA FirstUsableLba; 39 EFI_LBA LastUsableLba; 40 EFI_LBA UnusableSpace; 41 EFI_LBA FreeSpace; 42 EFI_LBA RootFile; 43 EFI_LBA SecutiryFile; 44 } EFI_PARTITION_HEADER; 45 46 47 // 48 // File header 49 // 50 51 #define EFI_FILE_HEADER_SIGNATURE 0x454c494620494249 52 #define EFI_FILE_HEADER_REVISION 0x00010000 53 #define EFI_FILE_STRING_SIZE 260 54 55 typedef struct _EFI_FILE_HEADER { 56 EFI_TABLE_HEADER Hdr; 57 UINT32 Class; 58 UINT32 LBALOffset; 59 EFI_LBA Parent; 60 UINT64 FileSize; 61 UINT64 FileAttributes; 62 EFI_TIME FileCreateTime; 63 EFI_TIME FileModificationTime; 64 EFI_GUID VendorGuid; 65 CHAR16 FileString[EFI_FILE_STRING_SIZE]; 66 } EFI_FILE_HEADER; 67 68 69 // 70 // Return the file's first LBAL which is in the same 71 // logical block as the file header 72 // 73 74 #define EFI_FILE_LBAL(a) ((EFI_LBAL *) (((CHAR8 *) (a)) + (a)->LBALOffset)) 75 76 #define EFI_FILE_CLASS_FREE_SPACE 1 77 #define EFI_FILE_CLASS_EMPTY 2 78 #define EFI_FILE_CLASS_NORMAL 3 79 80 81 // 82 // Logical Block Address List - the fundemental block 83 // description structure 84 // 85 86 #define EFI_LBAL_SIGNATURE 0x4c41424c20494249 87 #define EFI_LBAL_REVISION 0x00010000 88 89 typedef struct _EFI_LBAL { 90 EFI_TABLE_HEADER Hdr; 91 UINT32 Class; 92 EFI_LBA Parent; 93 EFI_LBA Next; 94 UINT32 ArraySize; 95 UINT32 ArrayCount; 96 } EFI_LBAL; 97 98 // Array size 99 #define EFI_LBAL_ARRAY_SIZE(lbal,offs,blks) \ 100 (((blks) - (offs) - (lbal)->Hdr.HeaderSize) / sizeof(EFI_RL)) 101 102 // 103 // Logical Block run-length 104 // 105 106 typedef struct { 107 EFI_LBA Start; 108 UINT64 Length; 109 } EFI_RL; 110 111 // 112 // Return the run-length structure from an LBAL header 113 // 114 115 #define EFI_LBAL_RL(a) ((EFI_RL*) (((CHAR8 *) (a)) + (a)->Hdr.HeaderSize)) 116 117 #endif 118 119