vax.c revision 1.3
1 /* $NetBSD: vax.c,v 1.3 2002/04/19 07:08:54 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Simon Burge. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Luke Mewburn of Wasabi Systems. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the NetBSD 24 * Foundation, Inc. and its contributors. 25 * 4. Neither the name of The NetBSD Foundation nor the names of its 26 * contributors may be used to endorse or promote products derived 27 * from this software without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 30 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 31 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 32 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 39 * POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42 /* 43 * Copyright (c) 1999 Christopher G. Demetriou. All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Christopher G. Demetriou 56 * for the NetBSD Project. 57 * 4. The name of the author may not be used to endorse or promote products 58 * derived from this software without specific prior written permission 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 #include <sys/cdefs.h> 73 #if defined(__RCSID) && !defined(__lint) 74 __RCSID("$NetBSD: vax.c,v 1.3 2002/04/19 07:08:54 lukem Exp $"); 75 #endif /* !__lint */ 76 77 #include <sys/param.h> 78 #include <sys/stat.h> 79 80 #include <assert.h> 81 #include <err.h> 82 #include <stddef.h> 83 #include <stdio.h> 84 #include <stdlib.h> 85 #include <unistd.h> 86 87 #include <dev/dec/dec_boot.h> 88 89 #include "installboot.h" 90 91 static int load_bootstrap(ib_params *, char **, 92 uint32_t *, uint32_t *, size_t *); 93 94 95 int 96 vax_parseopt(ib_params *params, const char *option) 97 { 98 99 if (parseoptionflag(params, option, IB_APPEND | IB_SUNSUM)) 100 return (1); 101 102 warnx("Unknown -o option `%s'", option); 103 return (0); 104 } 105 106 int 107 vax_clearboot(ib_params *params) 108 { 109 struct vax_boot_block bb; 110 ssize_t rv; 111 112 assert(params != NULL); 113 assert(params->fsfd != -1); 114 assert(params->filesystem != NULL); 115 assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE); 116 117 if (params->flags & (IB_STARTBLOCK | IB_APPEND)) { 118 warnx("Can't use `-b bno' or `-o append' with `-c'"); 119 return (0); 120 } 121 rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 122 if (rv == -1) { 123 warn("Reading `%s'", params->filesystem); 124 return (0); 125 } else if (rv != sizeof(bb)) { 126 warnx("Reading `%s': short read", params->filesystem); 127 return (0); 128 } 129 130 if (bb.bb_id_offset * 2 != offsetof(struct vax_boot_block, bb_magic1) 131 || bb.bb_magic1 != VAX_BOOT_MAGIC1) { 132 warnx( 133 "Old boot block magic number invalid; boot block invalid"); 134 return (0); 135 } 136 137 bb.bb_id_offset = 1; 138 bb.bb_mbone = 0; 139 bb.bb_lbn_hi = 0; 140 bb.bb_lbn_low = 0; 141 142 if (params->flags & IB_SUNSUM) { 143 uint16_t sum; 144 145 sum = compute_sunsum((uint16_t *)&bb); 146 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 147 return (0); 148 } 149 150 if (params->flags & IB_VERBOSE) 151 printf("%slearing boot block\n", 152 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 153 if (params->flags & IB_NOWRITE) 154 return (1); 155 156 rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 157 if (rv == -1) { 158 warn("Writing `%s'", params->filesystem); 159 return (0); 160 } else if (rv != sizeof(bb)) { 161 warnx("Writing `%s': short write", params->filesystem); 162 return (0); 163 } 164 165 return (1); 166 } 167 168 int 169 vax_setboot(ib_params *params) 170 { 171 struct stat bootstrapsb; 172 struct vax_boot_block bb; 173 uint32_t startblock; 174 int retval; 175 char *bootstrapbuf; 176 size_t bootstrapsize; 177 uint32_t bootstrapload, bootstrapexec; 178 ssize_t rv; 179 180 assert(params != NULL); 181 assert(params->fsfd != -1); 182 assert(params->filesystem != NULL); 183 assert(params->s1fd != -1); 184 assert(params->stage1 != NULL); 185 assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE); 186 187 retval = 0; 188 bootstrapbuf = NULL; 189 190 if ((params->flags & IB_STARTBLOCK) && 191 (params->flags & IB_APPEND)) { 192 warnx("Can't use `-b bno' with `-o append'"); 193 goto done; 194 } 195 196 if (fstat(params->s1fd, &bootstrapsb) == -1) { 197 warn("Examining `%s'", params->stage1); 198 goto done; 199 } 200 if (!S_ISREG(bootstrapsb.st_mode)) { 201 warnx("`%s' must be a regular file", params->stage1); 202 goto done; 203 } 204 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 205 &bootstrapexec, &bootstrapsize)) 206 goto done; 207 208 rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 209 if (rv == -1) { 210 warn("Reading `%s'", params->filesystem); 211 goto done; 212 } else if (rv != sizeof(bb)) { 213 warnx("Reading `%s': short read", params->filesystem); 214 goto done; 215 } 216 217 /* fill in the updated boot block fields */ 218 if (params->flags & IB_APPEND) { 219 struct stat filesyssb; 220 221 if (fstat(params->fsfd, &filesyssb) == -1) { 222 warn("Examining `%s'", params->filesystem); 223 goto done; 224 } 225 if (!S_ISREG(filesyssb.st_mode)) { 226 warnx( 227 "`%s' must be a regular file to append a bootstrap", 228 params->filesystem); 229 goto done; 230 } 231 startblock = howmany(filesyssb.st_size, 232 VAX_BOOT_BLOCK_BLOCKSIZE); 233 } else if (params->flags & IB_STARTBLOCK) { 234 startblock = params->startblock; 235 } else { 236 startblock = VAX_BOOT_BLOCK_OFFSET / VAX_BOOT_BLOCK_BLOCKSIZE 237 + 1; 238 } 239 240 bb.bb_id_offset = offsetof(struct vax_boot_block, bb_magic1) / 2; 241 bb.bb_mbone = 1; 242 bb.bb_lbn_hi = htole16((uint16_t) (startblock >> 16)); 243 bb.bb_lbn_low = htole16((uint16_t) (startblock >> 0)); 244 /* 245 * Now the identification block 246 */ 247 bb.bb_magic1 = VAX_BOOT_MAGIC1; 248 bb.bb_mbz1 = 0; 249 bb.bb_sum1 = ~(bb.bb_magic1 + bb.bb_mbz1 + bb.bb_pad1); 250 251 bb.bb_mbz2 = 0; 252 bb.bb_volinfo = VAX_BOOT_VOLINFO_NONE; 253 bb.bb_pad2a = 0; 254 bb.bb_pad2b = 0; 255 256 bb.bb_size = htole32(bootstrapsize / VAX_BOOT_BLOCK_BLOCKSIZE); 257 bb.bb_load = htole32(VAX_BOOT_LOAD); 258 bb.bb_entry = htole32(VAX_BOOT_ENTRY); 259 bb.bb_sum3 = htole32(le32toh(bb.bb_size) + le32toh(bb.bb_load) \ 260 + le32toh(bb.bb_entry)); 261 262 if (params->flags & IB_SUNSUM) { 263 uint16_t sum; 264 265 sum = compute_sunsum((uint16_t *)&bb); 266 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 267 goto done; 268 } 269 270 if (params->flags & IB_VERBOSE) { 271 printf("Bootstrap start sector: %#x\n", startblock); 272 printf("Bootstrap sector count: %#x\n", le32toh(bb.bb_size)); 273 printf("%sriting bootstrap\n", 274 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 275 } 276 if (params->flags & IB_NOWRITE) { 277 retval = 1; 278 goto done; 279 } 280 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 281 startblock * VAX_BOOT_BLOCK_BLOCKSIZE); 282 if (rv == -1) { 283 warn("Writing `%s'", params->filesystem); 284 goto done; 285 } else if (rv != bootstrapsize) { 286 warnx("Writing `%s': short write", params->filesystem); 287 goto done; 288 } 289 290 if (params->flags & IB_VERBOSE) 291 printf("Writing boot block\n"); 292 rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 293 if (rv == -1) { 294 warn("Writing `%s'", params->filesystem); 295 goto done; 296 } else if (rv != sizeof(bb)) { 297 warnx("Writing `%s': short write", params->filesystem); 298 goto done; 299 } else { 300 retval = 1; 301 } 302 303 done: 304 if (bootstrapbuf) 305 free(bootstrapbuf); 306 return (retval); 307 } 308 309 static int 310 load_bootstrap(ib_params *params, char **data, 311 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 312 { 313 ssize_t cc; 314 size_t buflen; 315 316 buflen = 512 * (VAX_BOOT_SIZE + 1); 317 *data = malloc(buflen); 318 if (*data == NULL) { 319 warn("Allocating %lu bytes", (unsigned long) buflen); 320 return (0); 321 } 322 323 cc = pread(params->s1fd, *data, buflen, 0); 324 if (cc <= 0) { 325 warn("Reading `%s'", params->stage1); 326 return (0); 327 } 328 if (cc > 512 * VAX_BOOT_SIZE) { 329 warnx("`%s': too large", params->stage1); 330 return (0); 331 } 332 333 *len = roundup(cc, VAX_BOOT_BLOCK_BLOCKSIZE); 334 *loadaddr = VAX_BOOT_LOAD; 335 *execaddr = VAX_BOOT_ENTRY; 336 return (1); 337 } 338
Indexes created Thu Sep 25 15:09:46 GMT 2025