pmax.c revision 1.8
1 /* $NetBSD: pmax.c,v 1.8 2002/05/14 06:40:33 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 1.8 2002/05/14 06:40:33 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> 123 124 #include "installboot.h" 125 126 static int load_bootstrap(ib_params *, char **, 127 uint32_t *, uint32_t *, size_t *); 128 129 130 int 131 pmax_parseopt(ib_params *params, const char *option) 132 { 133 134 if (parseoptionflag(params, option, IB_APPEND | IB_SUNSUM)) 135 return (1); 136 137 warnx("Unknown -o option `%s'", option); 138 return (0); 139 } 140 141 int 142 pmax_clearboot(ib_params *params) 143 { 144 struct pmax_boot_block bb; 145 ssize_t rv; 146 147 assert(params != NULL); 148 assert(params->fsfd != -1); 149 assert(params->filesystem != NULL); 150 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 151 152 if (params->flags & (IB_STAGE1START | IB_APPEND)) { 153 warnx("Can't use `-b bno' or `-o append' with `-c'"); 154 return (0); 155 } 156 if (params->flags & IB_STAGE2START) { 157 warnx("`-B bno' is not supported for %s", 158 params->machine->name); 159 return (0); 160 } 161 162 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 163 if (rv == -1) { 164 warn("Reading `%s'", params->filesystem); 165 return (0); 166 } else if (rv != sizeof(bb)) { 167 warnx("Reading `%s': short read", params->filesystem); 168 return (0); 169 } 170 171 if (le32toh(bb.magic) != PMAX_BOOT_MAGIC) { 172 warnx( 173 "Old boot block magic number invalid; boot block invalid"); 174 return (0); 175 } 176 177 bb.map[0].num_blocks = bb.map[0].start_block = bb.mode = 0; 178 bb.magic = htole32(PMAX_BOOT_MAGIC); 179 180 if (params->flags & IB_SUNSUM) { 181 uint16_t sum; 182 183 sum = compute_sunsum((uint16_t *)&bb); 184 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 185 return (0); 186 } 187 188 if (params->flags & IB_VERBOSE) 189 printf("%slearing boot block\n", 190 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 191 if (params->flags & IB_NOWRITE) 192 return (1); 193 194 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 195 if (rv == -1) { 196 warn("Writing `%s'", params->filesystem); 197 return (0); 198 } else if (rv != sizeof(bb)) { 199 warnx("Writing `%s': short write", params->filesystem); 200 return (0); 201 } 202 203 return (1); 204 } 205 206 int 207 pmax_setboot(ib_params *params) 208 { 209 struct stat bootstrapsb; 210 struct pmax_boot_block bb; 211 uint32_t startblock; 212 int retval; 213 char *bootstrapbuf; 214 size_t bootstrapsize; 215 uint32_t bootstrapload, bootstrapexec; 216 ssize_t rv; 217 218 assert(params != NULL); 219 assert(params->fsfd != -1); 220 assert(params->filesystem != NULL); 221 assert(params->s1fd != -1); 222 assert(params->stage1 != NULL); 223 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 224 225 retval = 0; 226 bootstrapbuf = NULL; 227 228 if ((params->flags & IB_STAGE1START) && 229 (params->flags & IB_APPEND)) { 230 warnx("Can't use `-b bno' with `-o append'"); 231 goto done; 232 } 233 if (params->flags & IB_STAGE2START) { 234 warnx("`-B bno' is not supported for %s", 235 params->machine->name); 236 goto done; 237 } 238 239 if (fstat(params->s1fd, &bootstrapsb) == -1) { 240 warn("Examining `%s'", params->stage1); 241 goto done; 242 } 243 if (!S_ISREG(bootstrapsb.st_mode)) { 244 warnx("`%s' must be a regular file", params->stage1); 245 goto done; 246 } 247 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 248 &bootstrapexec, &bootstrapsize)) 249 goto done; 250 251 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 252 if (rv == -1) { 253 warn("Reading `%s'", params->filesystem); 254 goto done; 255 } else if (rv != sizeof(bb)) { 256 warnx("Reading `%s': short read", params->filesystem); 257 goto done; 258 } 259 260 /* fill in the updated boot block fields */ 261 if (params->flags & IB_APPEND) { 262 struct stat filesyssb; 263 264 if (fstat(params->fsfd, &filesyssb) == -1) { 265 warn("Examining `%s'", params->filesystem); 266 goto done; 267 } 268 if (!S_ISREG(filesyssb.st_mode)) { 269 warnx( 270 "`%s' must be a regular file to append a bootstrap", 271 params->filesystem); 272 goto done; 273 } 274 startblock = howmany(filesyssb.st_size, 275 PMAX_BOOT_BLOCK_BLOCKSIZE); 276 } else if (params->flags & IB_STAGE1START) { 277 startblock = params->s1start; 278 } else { 279 startblock = PMAX_BOOT_BLOCK_OFFSET / PMAX_BOOT_BLOCK_BLOCKSIZE 280 + 1; 281 } 282 283 bb.map[0].start_block = htole32(startblock); 284 bb.map[0].num_blocks = 285 htole32(howmany(bootstrapsize, PMAX_BOOT_BLOCK_BLOCKSIZE)); 286 bb.magic = htole32(PMAX_BOOT_MAGIC); 287 bb.load_addr = htole32(bootstrapload); 288 bb.exec_addr = htole32(bootstrapexec); 289 bb.mode = htole32(PMAX_BOOTMODE_CONTIGUOUS); 290 291 if (params->flags & IB_SUNSUM) { 292 uint16_t sum; 293 294 sum = compute_sunsum((uint16_t *)&bb); 295 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 296 goto done; 297 } 298 299 if (params->flags & IB_VERBOSE) { 300 printf("Bootstrap start sector: %u\n", 301 le32toh(bb.map[0].start_block)); 302 printf("Bootstrap sector count: %u\n", 303 le32toh(bb.map[0].num_blocks)); 304 printf("Bootstrap load address: %#x\n", 305 le32toh(bb.load_addr)); 306 printf("Bootstrap exec address: %#x\n", 307 le32toh(bb.exec_addr)); 308 printf("%sriting bootstrap\n", 309 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 310 } 311 if (params->flags & IB_NOWRITE) { 312 retval = 1; 313 goto done; 314 } 315 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 316 startblock * PMAX_BOOT_BLOCK_BLOCKSIZE); 317 if (rv == -1) { 318 warn("Writing `%s'", params->filesystem); 319 goto done; 320 } else if (rv != bootstrapsize) { 321 warnx("Writing `%s': short write", params->filesystem); 322 goto done; 323 } 324 325 if (params->flags & IB_VERBOSE) 326 printf("Writing boot block\n"); 327 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 328 if (rv == -1) { 329 warn("Writing `%s'", params->filesystem); 330 goto done; 331 } else if (rv != sizeof(bb)) { 332 warnx("Writing `%s': short write", params->filesystem); 333 goto done; 334 } else { 335 retval = 1; 336 } 337 338 done: 339 if (bootstrapbuf) 340 free(bootstrapbuf); 341 return (retval); 342 } 343 344 345 #define MAX_SEGMENTS 10 /* We can load up to 10 segments */ 346 347 struct seglist { 348 Elf32_Addr addr; 349 Elf32_Off f_offset; 350 Elf32_Word f_size; 351 }; 352 353 static int 354 load_bootstrap(ib_params *params, char **data, 355 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 356 { 357 int i, nsegs; 358 Elf32_Addr lowaddr, highaddr; 359 Elf32_Ehdr ehdr; 360 Elf32_Phdr phdr; 361 struct seglist seglist[MAX_SEGMENTS]; 362 363 if ((pread(params->s1fd, &ehdr, sizeof(ehdr), 0)) != sizeof(ehdr)) { 364 warn("Reading `%s'", params->stage1); 365 return (0); 366 } 367 if ((memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || 368 (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { 369 warnx("No ELF header in `%s'", params->stage1); 370 return (0); 371 } 372 373 nsegs = highaddr = 0; 374 lowaddr = (uint32_t) ULONG_MAX; 375 376 for (i = 0; i < le16toh(ehdr.e_phnum); i++) { 377 if (pread(params->s1fd, &phdr, sizeof(phdr), 378 (off_t) le32toh(ehdr.e_phoff) + i * sizeof(phdr)) 379 != sizeof(phdr)) { 380 warn("Reading `%s'", params->stage1); 381 return (0); 382 } 383 if (le32toh(phdr.p_type) != PT_LOAD) 384 continue; 385 386 seglist[nsegs].addr = le32toh(phdr.p_paddr); 387 seglist[nsegs].f_offset = le32toh(phdr.p_offset); 388 seglist[nsegs].f_size = le32toh(phdr.p_filesz); 389 nsegs++; 390 391 if (le32toh(phdr.p_paddr) < lowaddr) 392 lowaddr = le32toh(phdr.p_paddr); 393 if (le32toh(phdr.p_paddr) + le32toh(phdr.p_filesz) > highaddr) 394 highaddr = le32toh(phdr.p_paddr) + 395 le32toh(phdr.p_filesz); 396 } 397 398 *loadaddr = lowaddr; 399 *execaddr = le32toh(ehdr.e_entry); 400 *len = roundup(highaddr - lowaddr, PMAX_BOOT_BLOCK_BLOCKSIZE); 401 if ((*data = malloc(*len)) == NULL) { 402 warn("Allocating %lu bytes", (unsigned long) *len); 403 return (0); 404 } 405 406 /* Now load the bootstrap into memory */ 407 for (i = 0; i < nsegs; i++) { 408 if (pread(params->s1fd, *data + seglist[i].addr - lowaddr, 409 seglist[i].f_size, (off_t)seglist[i].f_offset) 410 != seglist[i].f_size) { 411 warn("Reading `%s'", params->stage1); 412 return (0); 413 } 414 } 415 return (1); 416 } 417
Indexes created Wed Oct 01 13:09:50 GMT 2025