dec_boot.h revision 1.3.2.2
1 1.3.2.2 minoura /* $NetBSD: dec_boot.h,v 1.3.2.2 2000/06/22 17:06:24 minoura Exp $ */ 2 1.3.2.2 minoura 3 1.3.2.2 minoura /* 4 1.3.2.2 minoura * Copyright (c) 1992, 1993 5 1.3.2.2 minoura * The Regents of the University of California. All rights reserved. 6 1.3.2.2 minoura * 7 1.3.2.2 minoura * This code is derived from software contributed to Berkeley by 8 1.3.2.2 minoura * Ralph Campbell. 9 1.3.2.2 minoura * 10 1.3.2.2 minoura * Redistribution and use in source and binary forms, with or without 11 1.3.2.2 minoura * modification, are permitted provided that the following conditions 12 1.3.2.2 minoura * are met: 13 1.3.2.2 minoura * 1. Redistributions of source code must retain the above copyright 14 1.3.2.2 minoura * notice, this list of conditions and the following disclaimer. 15 1.3.2.2 minoura * 2. Redistributions in binary form must reproduce the above copyright 16 1.3.2.2 minoura * notice, this list of conditions and the following disclaimer in the 17 1.3.2.2 minoura * documentation and/or other materials provided with the distribution. 18 1.3.2.2 minoura * 3. All advertising materials mentioning features or use of this software 19 1.3.2.2 minoura * must display the following acknowledgement: 20 1.3.2.2 minoura * This product includes software developed by the University of 21 1.3.2.2 minoura * California, Berkeley and its contributors. 22 1.3.2.2 minoura * 4. Neither the name of the University nor the names of its contributors 23 1.3.2.2 minoura * may be used to endorse or promote products derived from this software 24 1.3.2.2 minoura * without specific prior written permission. 25 1.3.2.2 minoura * 26 1.3.2.2 minoura * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.3.2.2 minoura * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.3.2.2 minoura * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.3.2.2 minoura * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.3.2.2 minoura * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.3.2.2 minoura * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.3.2.2 minoura * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.3.2.2 minoura * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.3.2.2 minoura * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.3.2.2 minoura * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.3.2.2 minoura * SUCH DAMAGE. 37 1.3.2.2 minoura * 38 1.3.2.2 minoura * @(#)dec_boot.h 8.1 (Berkeley) 6/10/93 39 1.3.2.2 minoura * 40 1.3.2.2 minoura * devDiskLabel.h -- 41 1.3.2.2 minoura * 42 1.3.2.2 minoura * This defines the disk label that Sun writes on the 0'th sector of 43 1.3.2.2 minoura * the 0'th cylinder of its SMD disks. The disk label contains some 44 1.3.2.2 minoura * geometry information and also the division of the disk into a 45 1.3.2.2 minoura * number of partitions. Each partition is identified to the drive 46 1.3.2.2 minoura * by a different unit number. 47 1.3.2.2 minoura * 48 1.3.2.2 minoura * from: Header: /sprite/src/kernel/dev/RCS/devDiskLabel.h, 49 1.3.2.2 minoura * v 9.4 90/03/01 12:22:36 jhh Exp SPRITE (Berkeley) 50 1.3.2.2 minoura */ 51 1.3.2.2 minoura 52 1.3.2.2 minoura #ifndef _DEV_DEC_DEC_BOOT_H_ 53 1.3.2.2 minoura #define _DEV_DEC_DEC_BOOT_H_ 54 1.3.2.2 minoura 55 1.3.2.2 minoura /* 56 1.3.2.2 minoura * Boot block information on the 0th sector. 57 1.3.2.2 minoura * The boot program is stored in sequences of contiguous blocks. 58 1.3.2.2 minoura * 59 1.3.2.2 minoura * NOTE: The standard disk label offset is 64 which is 60 1.3.2.2 minoura * after the boot information expected by the PROM boot loader. 61 1.3.2.2 minoura */ 62 1.3.2.2 minoura 63 1.3.2.2 minoura /* PMAX (DECstation / MIPS) boot block information 64 1.3.2.2 minoura */ 65 1.3.2.2 minoura /* 66 1.3.2.2 minoura * If mode is 0, there is just one sequence of blocks and one Dec_BootMap 67 1.3.2.2 minoura * is used. If mode is 1, there are multiple sequences of blocks 68 1.3.2.2 minoura * and multiple Dec_BootMaps are used, the last with numBlocks = 0. 69 1.3.2.2 minoura */ 70 1.3.2.2 minoura struct pmax_boot_map { 71 1.3.2.2 minoura int32_t num_blocks; /* Number of blocks to read. */ 72 1.3.2.2 minoura int32_t start_block; /* Starting block on disk. */ 73 1.3.2.2 minoura }; 74 1.3.2.2 minoura 75 1.3.2.2 minoura /* 76 1.3.2.2 minoura * This is the structure of a disk or tape boot block. The boot_map 77 1.3.2.2 minoura * can either be a single boot count and start block (contiguous mode) 78 1.3.2.2 minoura * or a list of up to 61 (to fill a 512 byte sector) block count and 79 1.3.2.2 minoura * start block pairs. Under NetBSD, contiguous mode is always used. 80 1.3.2.2 minoura */ 81 1.3.2.2 minoura struct pmax_boot_block { 82 1.3.2.2 minoura u_int8_t pad[8]; 83 1.3.2.2 minoura int32_t magic; /* PMAX_BOOT_MAGIC */ 84 1.3.2.2 minoura int32_t mode; /* Mode for boot info. */ 85 1.3.2.2 minoura u_int32_t load_addr; /* Address to start loading. */ 86 1.3.2.2 minoura u_int32_t exec_addr; /* Address to start execing. */ 87 1.3.2.2 minoura struct pmax_boot_map map[61]; /* boot program section(s). */ 88 1.3.2.2 minoura } __attribute__((__packed__)); 89 1.3.2.2 minoura 90 1.3.2.2 minoura #define PMAX_BOOT_MAGIC 0x0002757a 91 1.3.2.2 minoura #define PMAX_BOOTMODE_CONTIGUOUS 0 92 1.3.2.2 minoura #define PMAX_BOOTMODE_SCATTERED 1 93 1.3.2.2 minoura 94 1.3.2.2 minoura #define PMAX_BOOT_BLOCK_OFFSET 0 95 1.3.2.2 minoura #define PMAX_BOOT_BLOCK_BLOCKSIZE 512 96 1.3.2.2 minoura 97 1.3.2.2 minoura /* VAX boot block information 98 1.3.2.2 minoura * 99 1.3.2.2 minoura */ 100 1.3.2.2 minoura struct vax_boot_block { 101 1.3.2.2 minoura /* Note that these don't overlap any of the pmax boot block 102 1.3.2.2 minoura */ 103 1.3.2.2 minoura u_int8_t pad0[2]; 104 1.3.2.2 minoura u_int8_t bb_id_offset; /* offset in words to id (magic1)*/ 105 1.3.2.2 minoura u_int8_t bb_mbone; /* must be one */ 106 1.3.2.2 minoura u_int16_t bb_lbn_hi; /* lbn (hi word) of bootstrap */ 107 1.3.2.2 minoura u_int16_t bb_lbn_low; /* lbn (low word) of bootstrap */ 108 1.3.2.2 minoura u_int8_t pad1[332]; 109 1.3.2.2 minoura 110 1.3.2.2 minoura /* The rest of these fields are identification area and describe 111 1.3.2.2 minoura * the secondary block for uVAX VMB. 112 1.3.2.2 minoura */ 113 1.3.2.2 minoura u_int8_t bb_magic1; /* magic number */ 114 1.3.2.2 minoura u_int8_t bb_mbz1; /* must be zero */ 115 1.3.2.2 minoura u_int8_t bb_pad1; /* any value */ 116 1.3.2.2 minoura u_int8_t bb_sum1; /* ~(magic1 + mbz1 + pad1) */ 117 1.3.2.2 minoura 118 1.3.2.2 minoura u_int8_t bb_mbz2; /* must be zero */ 119 1.3.2.2 minoura u_int8_t bb_volinfo; /* volinfo */ 120 1.3.2.2 minoura u_int8_t bb_pad2a; /* any value */ 121 1.3.2.2 minoura u_int8_t bb_pad2b; /* any value */ 122 1.3.2.2 minoura 123 1.3.2.2 minoura u_int32_t bb_size; /* size in blocks of bootstrap */ 124 1.3.2.2 minoura u_int32_t bb_load; /* load offset to bootstrap */ 125 1.3.2.2 minoura u_int32_t bb_entry; /* byte offset in bootstrap */ 126 1.3.2.2 minoura u_int32_t bb_sum3; /* sum of previous 3 fields */ 127 1.3.2.2 minoura 128 1.3.2.2 minoura /* The rest is unused. 129 1.3.2.2 minoura */ 130 1.3.2.2 minoura u_int8_t pad2[148]; 131 1.3.2.2 minoura } __attribute__((__packed__)); 132 1.3.2.2 minoura 133 1.3.2.2 minoura #define VAX_BOOT_MAGIC1 0x18 /* size of BB info? */ 134 1.3.2.2 minoura #define VAX_BOOT_VOLINFO_NONE 0x00 /* no special info */ 135 1.3.2.2 minoura #define VAX_BOOT_VOLINFO_SS 0x01 /* single sided */ 136 1.3.2.2 minoura #define VAX_BOOT_VOLINFO_DS 0x81 /* double sided */ 137 1.3.2.2 minoura 138 1.3.2.2 minoura #define VAX_BOOT_SIZE 16 /* 16 blocks */ 139 1.3.2.2 minoura #define VAX_BOOT_LOAD 0 /* no load offset */ 140 1.3.2.2 minoura #define VAX_BOOT_ENTRY 0x200 /* one block in */ 141 1.3.2.2 minoura 142 1.3.2.2 minoura #define VAX_BOOT_BLOCK_OFFSET 0 143 1.3.2.2 minoura #define VAX_BOOT_BLOCK_BLOCKSIZE 512 144 1.3.2.2 minoura 145 1.3.2.2 minoura /* The following describes the ULTRIX partition tables. 146 1.3.2.2 minoura */ 147 1.3.2.2 minoura /* 148 1.3.2.2 minoura * DEC_NUM_DISK_PARTS is the number of partitions that are recorded in 149 1.3.2.2 minoura * the label information. The size of the padding in the Dec_DiskLabel 150 1.3.2.2 minoura * type is dependent on this number... 151 1.3.2.2 minoura */ 152 1.3.2.2 minoura #define DEC_NUM_DISK_PARTS 8 153 1.3.2.2 minoura 154 1.3.2.2 minoura /* 155 1.3.2.2 minoura * A disk is divided into partitions and this type specifies where a 156 1.3.2.2 minoura * partition starts and how many bytes it contains. 157 1.3.2.2 minoura */ 158 1.3.2.2 minoura typedef struct dec_disk_map { 159 1.3.2.2 minoura int32_t num_blocks; /* Number of 512 byte blocks in partition. */ 160 1.3.2.2 minoura int32_t start_block; /* Start of partition in blocks. */ 161 1.3.2.2 minoura } dec_disk_map; 162 1.3.2.2 minoura 163 1.3.2.2 minoura /* 164 1.3.2.2 minoura * Label information on the 31st (DEC_LABEL_SECTOR) sector. 165 1.3.2.2 minoura */ 166 1.3.2.2 minoura typedef struct dec_disklabel { 167 1.3.2.2 minoura u_int8_t pad0[440]; /* DIFFERENT from sprite!!! */ 168 1.3.2.2 minoura int32_t magic; /* DEC_LABEL_MAGIC */ 169 1.3.2.2 minoura int32_t is_partitioned; /* 1 if disk is partitioned. */ 170 1.3.2.2 minoura dec_disk_map map[DEC_NUM_DISK_PARTS]; /* Indicates disk partitions. */ 171 1.3.2.2 minoura } dec_disklabel; 172 1.3.2.2 minoura 173 1.3.2.2 minoura #define DEC_LABEL_MAGIC 0x00032957 174 1.3.2.2 minoura #define DEC_LABEL_SECTOR 31 175 1.3.2.2 minoura 176 1.3.2.2 minoura #endif /* !_DEV_DEC_DEC_BOOT_H_ */ 177
Indexes created Thu Oct 02 01:09:59 GMT 2025