disklabel.h revision 1.8
1 /* $NetBSD: disklabel.h,v 1.8 2011/08/30 12:39:58 bouyer Exp $ */ 2 3 /* 4 * Copyright 2000, 2001 5 * Broadcom Corporation. All rights reserved. 6 * 7 * This software is furnished under license and may be used and copied only 8 * in accordance with the following terms and conditions. Subject to these 9 * conditions, you may download, copy, install, use, modify and distribute 10 * modified or unmodified copies of this software in source and/or binary 11 * form. No title or ownership is transferred hereby. 12 * 13 * 1) Any source code used, modified or distributed must reproduce and 14 * retain this copyright notice and list of conditions as they appear in 15 * the source file. 16 * 17 * 2) No right is granted to use any trade name, trademark, or logo of 18 * Broadcom Corporation. The "Broadcom Corporation" name may not be 19 * used to endorse or promote products derived from this software 20 * without the prior written permission of Broadcom Corporation. 21 * 22 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF 24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR 25 * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE 26 * FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE 27 * LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 31 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 32 * OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* from: $NetBSD: disklabel.h,v 1.4 2000/05/05 03:27:22 soren Exp */ 36 37 /* 38 * Copyright (c) 1994 Christopher G. Demetriou 39 * All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by Christopher G. Demetriou. 52 * 4. The name of the author may not be used to endorse or promote products 53 * derived from this software without specific prior written permission 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 56 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 57 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 58 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 59 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 60 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 64 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67 #ifndef _MACHINE_DISKLABEL_H_ 68 #define _MACHINE_DISKLABEL_H_ 69 70 #define LABELUSESMBR 0 /* no MBR partitionning */ 71 #define LABELSECTOR 1 /* sector containing label */ 72 #define LABELOFFSET 0 /* offset of label in sector */ 73 #define MAXPARTITIONS 16 74 #define RAW_PART 3 75 76 #ifdef __NetBSD__ 77 /* Pull in MBR partition definitions. */ 78 #if HAVE_NBTOOL_CONFIG_H 79 #include <nbinclude/sys/bootblock.h> 80 #else 81 #include <sys/bootblock.h> 82 #endif /* HAVE_NBTOOL_CONFIG_H */ 83 84 #ifndef __ASSEMBLER__ 85 #if HAVE_NBTOOL_CONFIG_H 86 #include <nbinclude/sys/dkbad.h> 87 #else 88 #include <sys/dkbad.h> 89 #endif /* HAVE_NBTOOL_CONFIG_H */ 90 struct cpu_disklabel { 91 struct mbr_partition dosparts[MBR_PART_COUNT]; 92 #define __HAVE_DISKLABEL_DKBAD 93 struct dkbad bad; 94 }; 95 #endif 96 #endif 97 98 /* 99 * CFE boot block, modeled loosely on Alpha. 100 * 101 * It consists of: 102 * 103 * BSD disk label 104 * <blank space> 105 * Boot block info (5 uint_64s) 106 * 107 * The boot block portion looks like: 108 * 109 * 110 * +-------+-------+-------+-------+-------+-------+-------+-------+ 111 * | BOOT_MAGIC_NUMBER | 112 * +-------+-------+-------+-------+-------+-------+-------+-------+ 113 * | Flags | Reserved | Vers | Header Checksum | 114 * +-------+-------+-------+-------+-------+-------+-------+-------+ 115 * | Secondary Loader Location (bytes) | 116 * +-------+-------+-------+-------+-------+-------+-------+-------+ 117 * | Loader Checksum | Size of loader (bytes) | 118 * +-------+-------+-------+-------+-------+-------+-------+-------+ 119 * | Reserved | Architecture Information | 120 * +-------+-------+-------+-------+-------+-------+-------+-------+ 121 * 122 * Boot block fields should always be read as 64-bit numbers. 123 * 124 */ 125 126 127 struct boot_block { 128 uint64_t cfe_bb_data[64]; /* data (disklabel, also as below) */ 129 }; 130 #define cfe_bb_magic cfe_bb_data[59] /* magic number */ 131 #define cfe_bb_hdrinfo cfe_bb_data[60] /* header checksum, ver, flags */ 132 #define cfe_bb_secstart cfe_bb_data[61] /* secondary start (bytes) */ 133 #define cfe_bb_secsize cfe_bb_data[62] /* secondary size (bytes) */ 134 #define cfe_bb_archinfo cfe_bb_data[63] /* architecture info */ 135 136 #define BOOT_BLOCK_OFFSET 0 /* offset of boot block. */ 137 #define BOOT_BLOCK_BLOCKSIZE 512 /* block size for sec. size/start, 138 * and for boot block itself 139 */ 140 #define BOOT_BLOCK_SIZE 40 /* 5 64-bit words */ 141 142 #define BOOT_MAGIC_NUMBER 0x43465631424f4f54 143 #define BOOT_HDR_CHECKSUM_MASK 0x00000000FFFFFFFF 144 #define BOOT_HDR_VER_MASK 0x000000FF00000000 145 #define BOOT_HDR_VER_SHIFT 32 146 #define BOOT_HDR_FLAGS_MASK 0xFF00000000000000 147 #define BOOT_SECSIZE_MASK 0x00000000FFFFFFFF 148 #define BOOT_DATA_CHECKSUM_MASK 0xFFFFFFFF00000000 149 #define BOOT_DATA_CHECKSUM_SHIFT 32 150 #define BOOT_ARCHINFO_MASK 0x00000000FFFFFFFF 151 152 #define BOOT_HDR_VERSION 1 153 154 #define CHECKSUM_BOOT_BLOCK(bb,cksum) \ 155 do { \ 156 uint32_t *_ptr = (uint32_t *) (bb); \ 157 uint32_t _cksum; \ 158 int _i; \ 159 \ 160 _cksum = 0; \ 161 for (_i = 0; \ 162 _i < (BOOT_BLOCK_SIZE / sizeof (uint32_t)); \ 163 _i++) \ 164 _cksum += _ptr[_i]; \ 165 *(cksum) = _cksum; \ 166 } while (0) 167 168 169 #define CHECKSUM_BOOT_DATA(data,len,cksum) \ 170 do { \ 171 uint32_t *_ptr = (uint32_t *) (data); \ 172 uint32_t _cksum; \ 173 int _i; \ 174 \ 175 _cksum = 0; \ 176 for (_i = 0; \ 177 _i < ((len) / sizeof (uint32_t)); \ 178 _i++) \ 179 _cksum += _ptr[_i]; \ 180 *(cksum) = _cksum; \ 181 } while (0) 182 183 184 #endif /* _MACHINE_DISKLABEL_H_ */ 185
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