pmax.c revision 1.7
1 /* $NetBSD: pmax.c,v 1.7 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 Ross Harvey. 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 Ross Harvey 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 /* 73 * Copyright (c) 1999 Christopher G. Demetriou. All rights reserved. 74 * 75 * Redistribution and use in source and binary forms, with or without 76 * modification, are permitted provided that the following conditions 77 * are met: 78 * 1. Redistributions of source code must retain the above copyright 79 * notice, this list of conditions and the following disclaimer. 80 * 2. Redistributions in binary form must reproduce the above copyright 81 * notice, this list of conditions and the following disclaimer in the 82 * documentation and/or other materials provided with the distribution. 83 * 3. All advertising materials mentioning features or use of this software 84 * must display the following acknowledgement: 85 * This product includes software developed by Christopher G. Demetriou 86 * for the NetBSD Project. 87 * 4. The name of the author may not be used to endorse or promote products 88 * derived from this software without specific prior written permission 89 * 90 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 91 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 92 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 93 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 94 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 95 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 96 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 97 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 98 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 99 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 100 */ 101 102 #include <sys/cdefs.h> 103 #if defined(__RCSID) && !defined(__lint) 104 __RCSID("$NetBSD: pmax.c,v 1.7 2002/05/14 06:18:52 lukem Exp $"); 105 #endif /* !__lint */ 106 107 #if HAVE_CONFIG_H 108 #include "config.h" 109 #endif 110 111 #include <sys/param.h> 112 #include <sys/stat.h> 113 114 #include <assert.h> 115 #include <err.h> 116 #include <stddef.h> 117 #include <stdio.h> 118 #include <stdlib.h> 119 #include <string.h> 120 #include <unistd.h> 121 122 #include <sys/exec_elf.h> 123 #if HAVE_CONFIG_H 124 #include "../../sys/dev/dec/dec_boot.h" 125 #else 126 #include <dev/dec/dec_boot.h> 127 #endif 128 129 #include "installboot.h" 130 131 static int load_bootstrap(ib_params *, char **, 132 uint32_t *, uint32_t *, size_t *); 133 134 135 int 136 pmax_parseopt(ib_params *params, const char *option) 137 { 138 139 if (parseoptionflag(params, option, IB_APPEND | IB_SUNSUM)) 140 return (1); 141 142 warnx("Unknown -o option `%s'", option); 143 return (0); 144 } 145 146 int 147 pmax_clearboot(ib_params *params) 148 { 149 struct pmax_boot_block bb; 150 ssize_t rv; 151 152 assert(params != NULL); 153 assert(params->fsfd != -1); 154 assert(params->filesystem != NULL); 155 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 156 157 if (params->flags & (IB_STAGE1START | IB_APPEND)) { 158 warnx("Can't use `-b bno' or `-o append' with `-c'"); 159 return (0); 160 } 161 if (params->flags & IB_STAGE2START) { 162 warnx("`-B bno' is not supported for %s", 163 params->machine->name); 164 return (0); 165 } 166 167 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 168 if (rv == -1) { 169 warn("Reading `%s'", params->filesystem); 170 return (0); 171 } else if (rv != sizeof(bb)) { 172 warnx("Reading `%s': short read", params->filesystem); 173 return (0); 174 } 175 176 if (le32toh(bb.magic) != PMAX_BOOT_MAGIC) { 177 warnx( 178 "Old boot block magic number invalid; boot block invalid"); 179 return (0); 180 } 181 182 bb.map[0].num_blocks = bb.map[0].start_block = bb.mode = 0; 183 bb.magic = htole32(PMAX_BOOT_MAGIC); 184 185 if (params->flags & IB_SUNSUM) { 186 uint16_t sum; 187 188 sum = compute_sunsum((uint16_t *)&bb); 189 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 190 return (0); 191 } 192 193 if (params->flags & IB_VERBOSE) 194 printf("%slearing boot block\n", 195 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 196 if (params->flags & IB_NOWRITE) 197 return (1); 198 199 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 200 if (rv == -1) { 201 warn("Writing `%s'", params->filesystem); 202 return (0); 203 } else if (rv != sizeof(bb)) { 204 warnx("Writing `%s': short write", params->filesystem); 205 return (0); 206 } 207 208 return (1); 209 } 210 211 int 212 pmax_setboot(ib_params *params) 213 { 214 struct stat bootstrapsb; 215 struct pmax_boot_block bb; 216 uint32_t startblock; 217 int retval; 218 char *bootstrapbuf; 219 size_t bootstrapsize; 220 uint32_t bootstrapload, bootstrapexec; 221 ssize_t rv; 222 223 assert(params != NULL); 224 assert(params->fsfd != -1); 225 assert(params->filesystem != NULL); 226 assert(params->s1fd != -1); 227 assert(params->stage1 != NULL); 228 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 229 230 retval = 0; 231 bootstrapbuf = NULL; 232 233 if ((params->flags & IB_STAGE1START) && 234 (params->flags & IB_APPEND)) { 235 warnx("Can't use `-b bno' with `-o append'"); 236 goto done; 237 } 238 if (params->flags & IB_STAGE2START) { 239 warnx("`-B bno' is not supported for %s", 240 params->machine->name); 241 goto done; 242 } 243 244 if (fstat(params->s1fd, &bootstrapsb) == -1) { 245 warn("Examining `%s'", params->stage1); 246 goto done; 247 } 248 if (!S_ISREG(bootstrapsb.st_mode)) { 249 warnx("`%s' must be a regular file", params->stage1); 250 goto done; 251 } 252 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 253 &bootstrapexec, &bootstrapsize)) 254 goto done; 255 256 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 257 if (rv == -1) { 258 warn("Reading `%s'", params->filesystem); 259 goto done; 260 } else if (rv != sizeof(bb)) { 261 warnx("Reading `%s': short read", params->filesystem); 262 goto done; 263 } 264 265 /* fill in the updated boot block fields */ 266 if (params->flags & IB_APPEND) { 267 struct stat filesyssb; 268 269 if (fstat(params->fsfd, &filesyssb) == -1) { 270 warn("Examining `%s'", params->filesystem); 271 goto done; 272 } 273 if (!S_ISREG(filesyssb.st_mode)) { 274 warnx( 275 "`%s' must be a regular file to append a bootstrap", 276 params->filesystem); 277 goto done; 278 } 279 startblock = howmany(filesyssb.st_size, 280 PMAX_BOOT_BLOCK_BLOCKSIZE); 281 } else if (params->flags & IB_STAGE1START) { 282 startblock = params->s1start; 283 } else { 284 startblock = PMAX_BOOT_BLOCK_OFFSET / PMAX_BOOT_BLOCK_BLOCKSIZE 285 + 1; 286 } 287 288 bb.map[0].start_block = htole32(startblock); 289 bb.map[0].num_blocks = 290 htole32(howmany(bootstrapsize, PMAX_BOOT_BLOCK_BLOCKSIZE)); 291 bb.magic = htole32(PMAX_BOOT_MAGIC); 292 bb.load_addr = htole32(bootstrapload); 293 bb.exec_addr = htole32(bootstrapexec); 294 bb.mode = htole32(PMAX_BOOTMODE_CONTIGUOUS); 295 296 if (params->flags & IB_SUNSUM) { 297 uint16_t sum; 298 299 sum = compute_sunsum((uint16_t *)&bb); 300 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 301 goto done; 302 } 303 304 if (params->flags & IB_VERBOSE) { 305 printf("Bootstrap start sector: %u\n", 306 le32toh(bb.map[0].start_block)); 307 printf("Bootstrap sector count: %u\n", 308 le32toh(bb.map[0].num_blocks)); 309 printf("Bootstrap load address: %#x\n", 310 le32toh(bb.load_addr)); 311 printf("Bootstrap exec address: %#x\n", 312 le32toh(bb.exec_addr)); 313 printf("%sriting bootstrap\n", 314 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 315 } 316 if (params->flags & IB_NOWRITE) { 317 retval = 1; 318 goto done; 319 } 320 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 321 startblock * PMAX_BOOT_BLOCK_BLOCKSIZE); 322 if (rv == -1) { 323 warn("Writing `%s'", params->filesystem); 324 goto done; 325 } else if (rv != bootstrapsize) { 326 warnx("Writing `%s': short write", params->filesystem); 327 goto done; 328 } 329 330 if (params->flags & IB_VERBOSE) 331 printf("Writing boot block\n"); 332 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 333 if (rv == -1) { 334 warn("Writing `%s'", params->filesystem); 335 goto done; 336 } else if (rv != sizeof(bb)) { 337 warnx("Writing `%s': short write", params->filesystem); 338 goto done; 339 } else { 340 retval = 1; 341 } 342 343 done: 344 if (bootstrapbuf) 345 free(bootstrapbuf); 346 return (retval); 347 } 348 349 350 #define MAX_SEGMENTS 10 /* We can load up to 10 segments */ 351 352 struct seglist { 353 Elf32_Addr addr; 354 Elf32_Off f_offset; 355 Elf32_Word f_size; 356 }; 357 358 static int 359 load_bootstrap(ib_params *params, char **data, 360 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 361 { 362 int i, nsegs; 363 Elf32_Addr lowaddr, highaddr; 364 Elf32_Ehdr ehdr; 365 Elf32_Phdr phdr; 366 struct seglist seglist[MAX_SEGMENTS]; 367 368 if ((pread(params->s1fd, &ehdr, sizeof(ehdr), 0)) != sizeof(ehdr)) { 369 warn("Reading `%s'", params->stage1); 370 return (0); 371 } 372 if ((memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || 373 (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { 374 warnx("No ELF header in `%s'", params->stage1); 375 return (0); 376 } 377 378 nsegs = highaddr = 0; 379 lowaddr = (uint32_t) ULONG_MAX; 380 381 for (i = 0; i < le16toh(ehdr.e_phnum); i++) { 382 if (pread(params->s1fd, &phdr, sizeof(phdr), 383 (off_t) le32toh(ehdr.e_phoff) + i * sizeof(phdr)) 384 != sizeof(phdr)) { 385 warn("Reading `%s'", params->stage1); 386 return (0); 387 } 388 if (le32toh(phdr.p_type) != PT_LOAD) 389 continue; 390 391 seglist[nsegs].addr = le32toh(phdr.p_paddr); 392 seglist[nsegs].f_offset = le32toh(phdr.p_offset); 393 seglist[nsegs].f_size = le32toh(phdr.p_filesz); 394 nsegs++; 395 396 if (le32toh(phdr.p_paddr) < lowaddr) 397 lowaddr = le32toh(phdr.p_paddr); 398 if (le32toh(phdr.p_paddr) + le32toh(phdr.p_filesz) > highaddr) 399 highaddr = le32toh(phdr.p_paddr) + 400 le32toh(phdr.p_filesz); 401 } 402 403 *loadaddr = lowaddr; 404 *execaddr = le32toh(ehdr.e_entry); 405 *len = roundup(highaddr - lowaddr, PMAX_BOOT_BLOCK_BLOCKSIZE); 406 if ((*data = malloc(*len)) == NULL) { 407 warn("Allocating %lu bytes", (unsigned long) *len); 408 return (0); 409 } 410 411 /* Now load the bootstrap into memory */ 412 for (i = 0; i < nsegs; i++) { 413 if (pread(params->s1fd, *data + seglist[i].addr - lowaddr, 414 seglist[i].f_size, (off_t)seglist[i].f_offset) 415 != seglist[i].f_size) { 416 warn("Reading `%s'", params->stage1); 417 return (0); 418 } 419 } 420 return (1); 421 } 422
Indexes created Mon Sep 22 05:09:51 GMT 2025