disklabel.h revision 1.4
1 /* $NetBSD: disklabel.h,v 1.4 2003/10/25 13:06:03 simonb 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 LABELSECTOR 1 /* sector containing label */ 71 #define LABELOFFSET 0 /* offset of label in sector */ 72 #define MAXPARTITIONS 16 73 #define RAW_PART 3 74 75 #ifdef __NetBSD__ 76 /* Pull in MBR partition definitions. */ 77 #include <sys/bootblock.h> 78 79 #ifndef __ASSEMBLER__ 80 #include <sys/dkbad.h> 81 struct cpu_disklabel { 82 struct mbr_partition dosparts[MBR_PART_COUNT]; 83 struct dkbad bad; 84 }; 85 #endif 86 #endif 87 88 /* 89 * CFE boot block, modeled loosely on Alpha. 90 * 91 * It consists of: 92 * 93 * BSD disk label 94 * <blank space> 95 * Boot block info (5 uint_64s) 96 * 97 * The boot block portion looks like: 98 * 99 * 100 * +-------+-------+-------+-------+-------+-------+-------+-------+ 101 * | BOOT_MAGIC_NUMBER | 102 * +-------+-------+-------+-------+-------+-------+-------+-------+ 103 * | Flags | Reserved | Vers | Header Checksum | 104 * +-------+-------+-------+-------+-------+-------+-------+-------+ 105 * | Secondary Loader Location (bytes) | 106 * +-------+-------+-------+-------+-------+-------+-------+-------+ 107 * | Loader Checksum | Size of loader (bytes) | 108 * +-------+-------+-------+-------+-------+-------+-------+-------+ 109 * | Reserved | Architecture Information | 110 * +-------+-------+-------+-------+-------+-------+-------+-------+ 111 * 112 * Boot block fields should always be read as 64-bit numbers. 113 * 114 */ 115 116 117 struct boot_block { 118 uint64_t cfe_bb_data[64]; /* data (disklabel, also as below) */ 119 }; 120 #define cfe_bb_magic cfe_bb_data[59] /* magic number */ 121 #define cfe_bb_hdrinfo cfe_bb_data[60] /* header checksum, ver, flags */ 122 #define cfe_bb_secstart cfe_bb_data[61] /* secondary start (bytes) */ 123 #define cfe_bb_secsize cfe_bb_data[62] /* secondary size (bytes) */ 124 #define cfe_bb_archinfo cfe_bb_data[63] /* architecture info */ 125 126 #define BOOT_BLOCK_OFFSET 0 /* offset of boot block. */ 127 #define BOOT_BLOCK_BLOCKSIZE 512 /* block size for sec. size/start, 128 * and for boot block itself 129 */ 130 #define BOOT_BLOCK_SIZE 40 /* 5 64-bit words */ 131 132 #define BOOT_MAGIC_NUMBER 0x43465631424f4f54 133 #define BOOT_HDR_CHECKSUM_MASK 0x00000000FFFFFFFF 134 #define BOOT_HDR_VER_MASK 0x000000FF00000000 135 #define BOOT_HDR_VER_SHIFT 32 136 #define BOOT_HDR_FLAGS_MASK 0xFF00000000000000 137 #define BOOT_SECSIZE_MASK 0x00000000FFFFFFFF 138 #define BOOT_DATA_CHECKSUM_MASK 0xFFFFFFFF00000000 139 #define BOOT_DATA_CHECKSUM_SHIFT 32 140 #define BOOT_ARCHINFO_MASK 0x00000000FFFFFFFF 141 142 #define BOOT_HDR_VERSION 1 143 144 #define CHECKSUM_BOOT_BLOCK(bb,cksum) \ 145 do { \ 146 uint32_t *_ptr = (uint32_t *) (bb); \ 147 uint32_t _cksum; \ 148 int _i; \ 149 \ 150 _cksum = 0; \ 151 for (_i = 0; \ 152 _i < (BOOT_BLOCK_SIZE / sizeof (uint32_t)); \ 153 _i++) \ 154 _cksum += _ptr[_i]; \ 155 *(cksum) = _cksum; \ 156 } while (0) 157 158 159 #define CHECKSUM_BOOT_DATA(data,len,cksum) \ 160 do { \ 161 uint32_t *_ptr = (uint32_t *) (data); \ 162 uint32_t _cksum; \ 163 int _i; \ 164 \ 165 _cksum = 0; \ 166 for (_i = 0; \ 167 _i < ((len) / sizeof (uint32_t)); \ 168 _i++) \ 169 _cksum += _ptr[_i]; \ 170 *(cksum) = _cksum; \ 171 } while (0) 172 173 174 #endif /* _MACHINE_DISKLABEL_H_ */ 175
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