vax.c revision 1.6
1 /* $NetBSD: vax.c,v 1.6 2002/05/14 06:18:52 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 1.6 2002/05/14 06:18:52 lukem Exp $"); 75 #endif /* !__lint */ 76 77 #if HAVE_CONFIG_H 78 #include "config.h" 79 #endif 80 81 #include <sys/param.h> 82 #include <sys/stat.h> 83 84 #include <assert.h> 85 #include <err.h> 86 #include <stddef.h> 87 #include <stdio.h> 88 #include <stdlib.h> 89 #include <unistd.h> 90 91 #if HAVE_CONFIG_H 92 #include "../../sys/dev/dec/dec_boot.h" 93 #else 94 #include <dev/dec/dec_boot.h> 95 #endif 96 97 #include "installboot.h" 98 99 static int load_bootstrap(ib_params *, char **, 100 uint32_t *, uint32_t *, size_t *); 101 102 103 int 104 vax_parseopt(ib_params *params, const char *option) 105 { 106 107 if (parseoptionflag(params, option, IB_APPEND | IB_SUNSUM)) 108 return (1); 109 110 warnx("Unknown -o option `%s'", option); 111 return (0); 112 } 113 114 int 115 vax_clearboot(ib_params *params) 116 { 117 struct vax_boot_block bb; 118 ssize_t rv; 119 120 assert(params != NULL); 121 assert(params->fsfd != -1); 122 assert(params->filesystem != NULL); 123 assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE); 124 125 if (params->flags & (IB_STAGE1START | IB_APPEND)) { 126 warnx("Can't use `-b bno' or `-o append' with `-c'"); 127 return (0); 128 } 129 if (params->flags & IB_STAGE2START) { 130 warnx("`-B bno' is not supported for %s", 131 params->machine->name); 132 return (0); 133 } 134 135 rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 136 if (rv == -1) { 137 warn("Reading `%s'", params->filesystem); 138 return (0); 139 } else if (rv != sizeof(bb)) { 140 warnx("Reading `%s': short read", params->filesystem); 141 return (0); 142 } 143 144 if (bb.bb_id_offset * 2 != offsetof(struct vax_boot_block, bb_magic1) 145 || bb.bb_magic1 != VAX_BOOT_MAGIC1) { 146 warnx( 147 "Old boot block magic number invalid; boot block invalid"); 148 return (0); 149 } 150 151 bb.bb_id_offset = 1; 152 bb.bb_mbone = 0; 153 bb.bb_lbn_hi = 0; 154 bb.bb_lbn_low = 0; 155 156 if (params->flags & IB_SUNSUM) { 157 uint16_t sum; 158 159 sum = compute_sunsum((uint16_t *)&bb); 160 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 161 return (0); 162 } 163 164 if (params->flags & IB_VERBOSE) 165 printf("%slearing boot block\n", 166 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 167 if (params->flags & IB_NOWRITE) 168 return (1); 169 170 rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 171 if (rv == -1) { 172 warn("Writing `%s'", params->filesystem); 173 return (0); 174 } else if (rv != sizeof(bb)) { 175 warnx("Writing `%s': short write", params->filesystem); 176 return (0); 177 } 178 179 return (1); 180 } 181 182 int 183 vax_setboot(ib_params *params) 184 { 185 struct stat bootstrapsb; 186 struct vax_boot_block bb; 187 uint32_t startblock; 188 int retval; 189 char *bootstrapbuf; 190 size_t bootstrapsize; 191 uint32_t bootstrapload, bootstrapexec; 192 ssize_t rv; 193 194 assert(params != NULL); 195 assert(params->fsfd != -1); 196 assert(params->filesystem != NULL); 197 assert(params->s1fd != -1); 198 assert(params->stage1 != NULL); 199 assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE); 200 201 retval = 0; 202 bootstrapbuf = NULL; 203 204 if ((params->flags & IB_STAGE1START) && 205 (params->flags & IB_APPEND)) { 206 warnx("Can't use `-b bno' with `-o append'"); 207 goto done; 208 } 209 if (params->flags & IB_STAGE2START) { 210 warnx("`-B bno' is not supported for %s", 211 params->machine->name); 212 goto done; 213 } 214 215 if (fstat(params->s1fd, &bootstrapsb) == -1) { 216 warn("Examining `%s'", params->stage1); 217 goto done; 218 } 219 if (!S_ISREG(bootstrapsb.st_mode)) { 220 warnx("`%s' must be a regular file", params->stage1); 221 goto done; 222 } 223 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 224 &bootstrapexec, &bootstrapsize)) 225 goto done; 226 227 rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 228 if (rv == -1) { 229 warn("Reading `%s'", params->filesystem); 230 goto done; 231 } else if (rv != sizeof(bb)) { 232 warnx("Reading `%s': short read", params->filesystem); 233 goto done; 234 } 235 236 /* fill in the updated boot block fields */ 237 if (params->flags & IB_APPEND) { 238 struct stat filesyssb; 239 240 if (fstat(params->fsfd, &filesyssb) == -1) { 241 warn("Examining `%s'", params->filesystem); 242 goto done; 243 } 244 if (!S_ISREG(filesyssb.st_mode)) { 245 warnx( 246 "`%s' must be a regular file to append a bootstrap", 247 params->filesystem); 248 goto done; 249 } 250 startblock = howmany(filesyssb.st_size, 251 VAX_BOOT_BLOCK_BLOCKSIZE); 252 } else if (params->flags & IB_STAGE1START) { 253 startblock = params->s1start; 254 } else { 255 startblock = VAX_BOOT_BLOCK_OFFSET / VAX_BOOT_BLOCK_BLOCKSIZE 256 + 1; 257 } 258 259 bb.bb_id_offset = offsetof(struct vax_boot_block, bb_magic1) / 2; 260 bb.bb_mbone = 1; 261 bb.bb_lbn_hi = htole16((uint16_t) (startblock >> 16)); 262 bb.bb_lbn_low = htole16((uint16_t) (startblock >> 0)); 263 /* 264 * Now the identification block 265 */ 266 bb.bb_magic1 = VAX_BOOT_MAGIC1; 267 bb.bb_mbz1 = 0; 268 bb.bb_sum1 = ~(bb.bb_magic1 + bb.bb_mbz1 + bb.bb_pad1); 269 270 bb.bb_mbz2 = 0; 271 bb.bb_volinfo = VAX_BOOT_VOLINFO_NONE; 272 bb.bb_pad2a = 0; 273 bb.bb_pad2b = 0; 274 275 bb.bb_size = htole32(bootstrapsize / VAX_BOOT_BLOCK_BLOCKSIZE); 276 bb.bb_load = htole32(VAX_BOOT_LOAD); 277 bb.bb_entry = htole32(VAX_BOOT_ENTRY); 278 bb.bb_sum3 = htole32(le32toh(bb.bb_size) + le32toh(bb.bb_load) \ 279 + le32toh(bb.bb_entry)); 280 281 if (params->flags & IB_SUNSUM) { 282 uint16_t sum; 283 284 sum = compute_sunsum((uint16_t *)&bb); 285 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 286 goto done; 287 } 288 289 if (params->flags & IB_VERBOSE) { 290 printf("Bootstrap start sector: %u\n", startblock); 291 printf("Bootstrap sector count: %u\n", le32toh(bb.bb_size)); 292 printf("%sriting bootstrap\n", 293 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 294 } 295 if (params->flags & IB_NOWRITE) { 296 retval = 1; 297 goto done; 298 } 299 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 300 startblock * VAX_BOOT_BLOCK_BLOCKSIZE); 301 if (rv == -1) { 302 warn("Writing `%s'", params->filesystem); 303 goto done; 304 } else if (rv != bootstrapsize) { 305 warnx("Writing `%s': short write", params->filesystem); 306 goto done; 307 } 308 309 if (params->flags & IB_VERBOSE) 310 printf("Writing boot block\n"); 311 rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 312 if (rv == -1) { 313 warn("Writing `%s'", params->filesystem); 314 goto done; 315 } else if (rv != sizeof(bb)) { 316 warnx("Writing `%s': short write", params->filesystem); 317 goto done; 318 } else { 319 retval = 1; 320 } 321 322 done: 323 if (bootstrapbuf) 324 free(bootstrapbuf); 325 return (retval); 326 } 327 328 static int 329 load_bootstrap(ib_params *params, char **data, 330 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 331 { 332 ssize_t cc; 333 size_t buflen; 334 335 buflen = 512 * (VAX_BOOT_SIZE + 1); 336 *data = malloc(buflen); 337 if (*data == NULL) { 338 warn("Allocating %lu bytes", (unsigned long) buflen); 339 return (0); 340 } 341 342 cc = pread(params->s1fd, *data, buflen, 0); 343 if (cc <= 0) { 344 warn("Reading `%s'", params->stage1); 345 return (0); 346 } 347 if (cc > 512 * VAX_BOOT_SIZE) { 348 warnx("`%s': too large", params->stage1); 349 return (0); 350 } 351 352 *len = roundup(cc, VAX_BOOT_BLOCK_BLOCKSIZE); 353 *loadaddr = VAX_BOOT_LOAD; 354 *execaddr = VAX_BOOT_ENTRY; 355 return (1); 356 } 357
Indexes created Thu Sep 25 15:09:46 GMT 2025