vax.c revision 1.8
1 /* $NetBSD: vax.c,v 1.8 2002/05/15 02:18:24 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 1.8 2002/05/15 02:18:24 lukem Exp $"); 75 #endif /* !__lint */ 76 77 #if HAVE_CONFIG_H 78 #include "config.h" 79 #endif 80 81 #include <sys/param.h> 82 83 #include <assert.h> 84 #include <err.h> 85 #include <stddef.h> 86 #include <stdio.h> 87 #include <stdlib.h> 88 #include <unistd.h> 89 90 #include "installboot.h" 91 92 static int load_bootstrap(ib_params *, char **, 93 uint32_t *, uint32_t *, size_t *); 94 95 96 int 97 vax_parseopt(ib_params *params, const char *option) 98 { 99 100 if (parseoptionflag(params, option, IB_APPEND | IB_SUNSUM)) 101 return (1); 102 103 warnx("Unknown -o option `%s'", option); 104 return (0); 105 } 106 107 int 108 vax_clearboot(ib_params *params) 109 { 110 struct vax_boot_block bb; 111 ssize_t rv; 112 113 assert(params != NULL); 114 assert(params->fsfd != -1); 115 assert(params->filesystem != NULL); 116 assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE); 117 118 if (params->flags & (IB_STAGE1START | IB_APPEND)) { 119 warnx("Can't use `-b bno' or `-o append' with `-c'"); 120 return (0); 121 } 122 if (params->flags & IB_STAGE2START) { 123 warnx("`-B bno' is not supported for %s", 124 params->machine->name); 125 return (0); 126 } 127 128 rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 129 if (rv == -1) { 130 warn("Reading `%s'", params->filesystem); 131 return (0); 132 } else if (rv != sizeof(bb)) { 133 warnx("Reading `%s': short read", params->filesystem); 134 return (0); 135 } 136 137 if (bb.bb_id_offset * 2 != offsetof(struct vax_boot_block, bb_magic1) 138 || bb.bb_magic1 != VAX_BOOT_MAGIC1) { 139 warnx( 140 "Old boot block magic number invalid; boot block invalid"); 141 return (0); 142 } 143 144 bb.bb_id_offset = 1; 145 bb.bb_mbone = 0; 146 bb.bb_lbn_hi = 0; 147 bb.bb_lbn_low = 0; 148 149 if (params->flags & IB_SUNSUM) { 150 uint16_t sum; 151 152 sum = compute_sunsum((uint16_t *)&bb); 153 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 154 return (0); 155 } 156 157 if (params->flags & IB_VERBOSE) 158 printf("%slearing boot block\n", 159 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 160 if (params->flags & IB_NOWRITE) 161 return (1); 162 163 rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 164 if (rv == -1) { 165 warn("Writing `%s'", params->filesystem); 166 return (0); 167 } else if (rv != sizeof(bb)) { 168 warnx("Writing `%s': short write", params->filesystem); 169 return (0); 170 } 171 172 return (1); 173 } 174 175 int 176 vax_setboot(ib_params *params) 177 { 178 struct stat bootstrapsb; 179 struct vax_boot_block bb; 180 uint32_t startblock; 181 int retval; 182 char *bootstrapbuf; 183 size_t bootstrapsize; 184 uint32_t bootstrapload, bootstrapexec; 185 ssize_t rv; 186 187 assert(params != NULL); 188 assert(params->fsfd != -1); 189 assert(params->filesystem != NULL); 190 assert(params->s1fd != -1); 191 assert(params->stage1 != NULL); 192 assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE); 193 194 retval = 0; 195 bootstrapbuf = NULL; 196 197 if ((params->flags & IB_STAGE1START) && 198 (params->flags & IB_APPEND)) { 199 warnx("Can't use `-b bno' with `-o append'"); 200 goto done; 201 } 202 if (params->flags & IB_STAGE2START) { 203 warnx("`-B bno' is not supported for %s", 204 params->machine->name); 205 goto done; 206 } 207 208 if (fstat(params->s1fd, &bootstrapsb) == -1) { 209 warn("Examining `%s'", params->stage1); 210 goto done; 211 } 212 if (!S_ISREG(bootstrapsb.st_mode)) { 213 warnx("`%s' must be a regular file", params->stage1); 214 goto done; 215 } 216 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 217 &bootstrapexec, &bootstrapsize)) 218 goto done; 219 220 rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 221 if (rv == -1) { 222 warn("Reading `%s'", params->filesystem); 223 goto done; 224 } else if (rv != sizeof(bb)) { 225 warnx("Reading `%s': short read", params->filesystem); 226 goto done; 227 } 228 229 /* fill in the updated boot block fields */ 230 if (params->flags & IB_APPEND) { 231 struct stat filesyssb; 232 233 if (fstat(params->fsfd, &filesyssb) == -1) { 234 warn("Examining `%s'", params->filesystem); 235 goto done; 236 } 237 if (!S_ISREG(filesyssb.st_mode)) { 238 warnx( 239 "`%s' must be a regular file to append a bootstrap", 240 params->filesystem); 241 goto done; 242 } 243 startblock = howmany(filesyssb.st_size, 244 VAX_BOOT_BLOCK_BLOCKSIZE); 245 } else if (params->flags & IB_STAGE1START) { 246 startblock = params->s1start; 247 } else { 248 startblock = VAX_BOOT_BLOCK_OFFSET / VAX_BOOT_BLOCK_BLOCKSIZE 249 + 1; 250 } 251 252 bb.bb_id_offset = offsetof(struct vax_boot_block, bb_magic1) / 2; 253 bb.bb_mbone = 1; 254 bb.bb_lbn_hi = htole16((uint16_t) (startblock >> 16)); 255 bb.bb_lbn_low = htole16((uint16_t) (startblock >> 0)); 256 /* 257 * Now the identification block 258 */ 259 bb.bb_magic1 = VAX_BOOT_MAGIC1; 260 bb.bb_mbz1 = 0; 261 bb.bb_sum1 = ~(bb.bb_magic1 + bb.bb_mbz1 + bb.bb_pad1); 262 263 bb.bb_mbz2 = 0; 264 bb.bb_volinfo = VAX_BOOT_VOLINFO_NONE; 265 bb.bb_pad2a = 0; 266 bb.bb_pad2b = 0; 267 268 bb.bb_size = htole32(bootstrapsize / VAX_BOOT_BLOCK_BLOCKSIZE); 269 bb.bb_load = htole32(VAX_BOOT_LOAD); 270 bb.bb_entry = htole32(VAX_BOOT_ENTRY); 271 bb.bb_sum3 = htole32(le32toh(bb.bb_size) + le32toh(bb.bb_load) \ 272 + le32toh(bb.bb_entry)); 273 274 if (params->flags & IB_SUNSUM) { 275 uint16_t sum; 276 277 sum = compute_sunsum((uint16_t *)&bb); 278 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 279 goto done; 280 } 281 282 if (params->flags & IB_VERBOSE) { 283 printf("Bootstrap start sector: %u\n", startblock); 284 printf("Bootstrap sector count: %u\n", le32toh(bb.bb_size)); 285 printf("%sriting bootstrap\n", 286 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 287 } 288 if (params->flags & IB_NOWRITE) { 289 retval = 1; 290 goto done; 291 } 292 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 293 startblock * VAX_BOOT_BLOCK_BLOCKSIZE); 294 if (rv == -1) { 295 warn("Writing `%s'", params->filesystem); 296 goto done; 297 } else if (rv != bootstrapsize) { 298 warnx("Writing `%s': short write", params->filesystem); 299 goto done; 300 } 301 302 if (params->flags & IB_VERBOSE) 303 printf("Writing boot block\n"); 304 rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 305 if (rv == -1) { 306 warn("Writing `%s'", params->filesystem); 307 goto done; 308 } else if (rv != sizeof(bb)) { 309 warnx("Writing `%s': short write", params->filesystem); 310 goto done; 311 } else { 312 retval = 1; 313 } 314 315 done: 316 if (bootstrapbuf) 317 free(bootstrapbuf); 318 return (retval); 319 } 320 321 static int 322 load_bootstrap(ib_params *params, char **data, 323 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 324 { 325 ssize_t cc; 326 size_t buflen; 327 328 buflen = 512 * (VAX_BOOT_SIZE + 1); 329 *data = malloc(buflen); 330 if (*data == NULL) { 331 warn("Allocating %lu bytes", (unsigned long) buflen); 332 return (0); 333 } 334 335 cc = pread(params->s1fd, *data, buflen, 0); 336 if (cc <= 0) { 337 warn("Reading `%s'", params->stage1); 338 return (0); 339 } 340 if (cc > 512 * VAX_BOOT_SIZE) { 341 warnx("`%s': too large", params->stage1); 342 return (0); 343 } 344 345 *len = roundup(cc, VAX_BOOT_BLOCK_BLOCKSIZE); 346 *loadaddr = VAX_BOOT_LOAD; 347 *execaddr = VAX_BOOT_ENTRY; 348 return (1); 349 } 350
Indexes created Tue Sep 30 11:09:46 GMT 2025