1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 /* Copyright (c) 1984, 1986, 1987, 1988 AT&T */ 27 /* All Rights Reserved */ 28 29 30 #ifndef _SYS_DKTP_FDISK_H 31 #define _SYS_DKTP_FDISK_H 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 /* 38 * fdisk.h 39 * This file defines the structure of physical disk sector 0 for use on 40 * AT386 systems. The format of this sector is constrained by the ROM 41 * BIOS and MS-DOS conventions. 42 * Note that this block does not define the partitions used by the unix 43 * driver. The unix partitions are obtained from the VTOC. 44 */ 45 46 /* 47 * the MAX values are the maximum usable values for BIOS chs values 48 * The MAX_CYL value of 1022 is the maximum usable value 49 * the value of 1023 is a fence value, 50 * indicating no CHS geometry exists for the corresponding LBA value. 51 * HEAD range [ 0 .. MAX_HEAD ], so number of heads is (MAX_HEAD + 1) 52 * SECT range [ 1 .. MAX_SECT ], so number of sectors is (MAX_SECT) 53 */ 54 #define MAX_SECT (63) 55 #define MAX_CYL (1022) 56 #define MAX_HEAD (254) 57 58 /* 59 * BOOTSZ was reduced from 446 to 440 bytes to NOT overwrite the Windows 60 * Vista DISKID. Otherwise Vista won't boot from Solaris GRUB in a dual-boot 61 * setup. 62 * The actual size of mboot code is 425 bytes while that of GRUB stage1 is 63 * 423 bytes. So this changes does not harm them. 64 */ 65 #define BOOTSZ 440 /* size of boot code in master boot block */ 66 #define FD_NUMPART 4 /* number of 'partitions' in fdisk table */ 67 #define MBB_MAGIC 0xAA55 /* magic number for mboot.signature */ 68 #define DEFAULT_INTLV 4 /* default interleave for testing tracks */ 69 #define MINPSIZE 4 /* minimum number of cylinders in a partition */ 70 #define TSTPAT 0xE5 /* test pattern for verifying disk */ 71 72 /* 73 * structure to hold the fdisk partition table 74 */ 75 struct ipart { 76 unsigned char bootid; /* bootable or not */ 77 unsigned char beghead; /* beginning head, sector, cylinder */ 78 unsigned char begsect; /* begcyl is a 10-bit number. High 2 bits */ 79 unsigned char begcyl; /* are in begsect. */ 80 unsigned char systid; /* OS type */ 81 unsigned char endhead; /* ending head, sector, cylinder */ 82 unsigned char endsect; /* endcyl is a 10-bit number. High 2 bits */ 83 unsigned char endcyl; /* are in endsect. */ 84 uint32_t relsect; /* first sector relative to start of disk */ 85 uint32_t numsect; /* number of sectors in partition */ 86 }; 87 /* 88 * Values for bootid. 89 */ 90 #define NOTACTIVE 0 91 #define ACTIVE 128 92 /* 93 * Values for systid. 94 */ 95 #define UNUSED 0 /* Empty Partition */ 96 #define DOSOS12 1 /* DOS partition, 12-bit FAT */ 97 #define PCIXOS 2 /* PC/IX partition */ 98 #define DOSOS16 4 /* DOS partition, 16-bit FAT */ 99 #define EXTDOS 5 /* EXT-DOS partition */ 100 #define DOSHUGE 6 /* Huge DOS partition > 32MB */ 101 #define FDISK_IFS 7 /* Installable File System (IFS): HPFS & NTFS */ 102 #define FDISK_AIXBOOT 8 /* AIX Boot */ 103 #define FDISK_AIXDATA 9 /* AIX Data */ 104 #define FDISK_OS2BOOT 10 /* OS/2 Boot Manager */ 105 #define FDISK_WINDOWS 11 /* Windows 95 FAT32 (up to 2047GB) */ 106 #define FDISK_EXT_WIN 12 /* Windows 95 FAT32 (extended-INT13) */ 107 #define FDISK_FAT95 14 /* DOS 16-bit FAT, LBA-mapped */ 108 #define FDISK_EXTLBA 15 /* Extended partition, LBA-mapped */ 109 #define DIAGPART 18 /* Diagnostic boot partition (OS independent) */ 110 #define FDISK_LINUX 65 /* Linux */ 111 #define FDISK_LINUXDSWAP 66 /* Linux swap (sharing disk w/ DRDOS) */ 112 #define FDISK_LINUXDNAT 67 /* Linux native (sharing disk with DRDOS) */ 113 #define FDISK_CPM 82 /* CP/M */ 114 #define DOSDATA 86 /* DOS data partition */ 115 #define OTHEROS 98 /* part. type for appl. (DB?) needs */ 116 /* raw partition. ID was 0 but conflicted */ 117 /* with DOS 3.3 fdisk */ 118 #define UNIXOS 99 /* UNIX V.x partition */ 119 #define FDISK_NOVELL2 100 /* Novell Netware 286 */ 120 #define FDISK_NOVELL3 101 /* Novell Netware 3.x and later */ 121 #define FDISK_QNX4 119 /* QNX 4.x */ 122 #define FDISK_QNX42 120 /* QNX 4.x 2nd part */ 123 #define FDISK_QNX43 121 /* QNX 4.x 3rd part */ 124 #define SUNIXOS 130 /* Solaris UNIX partition */ 125 #define FDISK_LINUXNAT 131 /* Linux native */ 126 #define FDISK_NTFSVOL1 134 /* NTFS volume set 1 */ 127 #define FDISK_NTFSVOL2 135 /* NTFS volume set 2 */ 128 #define FDISK_BSD 165 /* BSD/386, 386BSD, NetBSD, FreeBSD, OpenBSD */ 129 #define FDISK_NEXTSTEP 167 /* NeXTSTEP */ 130 #define FDISK_BSDIFS 183 /* BSDI file system */ 131 #define FDISK_BSDISWAP 184 /* BSDI swap */ 132 #define X86BOOT 190 /* x86 Solaris boot partition */ 133 #define SUNIXOS2 191 /* Solaris UNIX partition */ 134 #define EFI_PMBR 238 /* EFI PMBR */ 135 #define EFI_FS 239 /* EFI File System (System Partition) */ 136 #define MAXDOS 65535L /* max size (sectors) for DOS partition */ 137 138 /* 139 * structure to hold master boot block in physical sector 0 of the disk. 140 * Note that partitions stuff can't be directly included in the structure 141 * because of lameo '386 compiler alignment design. 142 * Alignment issues also force us to have 2 16bit entities for a single 143 * 32bit win_volserno. It is not used anywhere anyway. 144 */ 145 146 struct mboot { /* master boot block */ 147 char bootinst[BOOTSZ]; 148 uint16_t win_volserno_lo; 149 uint16_t win_volserno_hi; 150 uint16_t reserved; 151 char parts[FD_NUMPART * sizeof (struct ipart)]; 152 ushort_t signature; 153 }; 154 155 #if defined(__i386) || defined(__amd64) 156 157 /* Byte offset of the start of the partition table within the sector */ 158 #define FDISK_PART_TABLE_START 446 159 160 /* Maximum number of valid partitions assumed as 32 */ 161 #define MAX_EXT_PARTS 32 162 163 #else 164 165 #define MAX_EXT_PARTS 0 166 167 #endif /* if defined(__i386) || defined(__amd64) */ 168 169 #ifdef __cplusplus 170 } 171 #endif 172 173 #endif /* _SYS_DKTP_FDISK_H */ 174