sys/arch/ia64/stand/efi/include/efifs.h

   1 /*      $NetBSD: efifs.h,v 1.1 2006/04/07 14:21:29 cherry Exp $ */
   2 /* $FreeBSD: src/sys/boot/efi/include/efifs.h,v 1.2 2002/05/19 03:17:20 marcel Exp $ */
   3
   4 #ifndef _EFI_FS_H
   5 #define _EFI_FS_H
   6
   7 /*++
   8
   9 Copyright (c) 1998  Intel Corporation
  10
  11 Module Name:
  12
  13     efifs.h
  14
  15 Abstract:
  16
  17     EFI File System structures
  18
  19
  20
  21 Revision History
  22
  23 --*/
  24
  25
  26 /*
  27  * EFI Partition header (normaly starts in LBA 1)
  28  */
  29
  30 #define EFI_PARTITION_SIGNATURE         0x5053595320494249
  31 #define EFI_PARTITION_REVISION          0x00010001
  32 #define MIN_EFI_PARTITION_BLOCK_SIZE    512
  33 #define EFI_PARTITION_LBA               1
  34
  35 typedef struct _EFI_PARTITION_HEADER {
  36     EFI_TABLE_HEADER    Hdr;
  37     UINT32              DirectoryAllocationNumber;
  38     UINT32              BlockSize;
  39     EFI_LBA             FirstUsableLba;
  40     EFI_LBA             LastUsableLba;
  41     EFI_LBA             UnusableSpace;
  42     EFI_LBA             FreeSpace;
  43     EFI_LBA             RootFile;
  44     EFI_LBA             SecutiryFile;
  45 } EFI_PARTITION_HEADER;
  46
  47
  48 /*
  49  * File header
  50  */
  51
  52 #define EFI_FILE_HEADER_SIGNATURE   0x454c494620494249
  53 #define EFI_FILE_HEADER_REVISION    0x00010000
  54 #define EFI_FILE_STRING_SIZE        260
  55
  56 typedef struct _EFI_FILE_HEADER {
  57     EFI_TABLE_HEADER    Hdr;
  58     UINT32              Class;
  59     UINT32              LBALOffset;
  60     EFI_LBA             Parent;
  61     UINT64              FileSize;
  62     UINT64              FileAttributes;
  63     EFI_TIME            FileCreateTime;
  64     EFI_TIME            FileModificationTime;
  65     EFI_GUID            VendorGuid;
  66     CHAR16              FileString[EFI_FILE_STRING_SIZE];
  67 } EFI_FILE_HEADER;
  68
  69
  70 /*
  71  * Return the file's first LBAL which is in the same
  72  * logical block as the file header
  73  */
  74
  75 #define EFI_FILE_LBAL(a)    ((EFI_LBAL *) (((CHAR8 *) (a)) + (a)->LBALOffset))
  76
  77 #define EFI_FILE_CLASS_FREE_SPACE   1
  78 #define EFI_FILE_CLASS_EMPTY        2
  79 #define EFI_FILE_CLASS_NORMAL       3
  80
  81
  82 /*
  83  * Logical Block Address List - the fundemental block
  84  * description structure
  85  */
  86
  87 #define EFI_LBAL_SIGNATURE      0x4c41424c20494249
  88 #define EFI_LBAL_REVISION       0x00010000
  89
  90 typedef struct _EFI_LBAL {
  91     EFI_TABLE_HEADER    Hdr;
  92     UINT32              Class;
  93     EFI_LBA             Parent;
  94     EFI_LBA             Next;
  95     UINT32              ArraySize;
  96     UINT32              ArrayCount;
  97 } EFI_LBAL;
  98
  99 /* Array size */
 100 #define EFI_LBAL_ARRAY_SIZE(lbal,offs,blks)  \
 101         (((blks) - (offs) - (lbal)->Hdr.HeaderSize) / sizeof(EFI_RL))
 102
 103 /*
 104  * Logical Block run-length
 105  */
 106
 107 typedef struct {
 108     EFI_LBA     Start;
 109     UINT64      Length;
 110 } EFI_RL;
 111
 112 /*
 113  * Return the run-length structure from an LBAL header
 114  */
 115
 116 #define EFI_LBAL_RL(a)      ((EFI_RL*) (((CHAR8 *) (a)) + (a)->Hdr.HeaderSize))
 117
 118 #endif