pmax.c revision 1.5
1 /* $NetBSD: pmax.c,v 1.5 2002/04/25 18:11:54 tv 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 1.5 2002/04/25 18:11:54 tv 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_STARTBLOCK | IB_APPEND)) { 158 warnx("Can't use `-b bno' or `-o append' with `-c'"); 159 return (0); 160 } 161 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 162 if (rv == -1) { 163 warn("Reading `%s'", params->filesystem); 164 return (0); 165 } else if (rv != sizeof(bb)) { 166 warnx("Reading `%s': short read", params->filesystem); 167 return (0); 168 } 169 170 if (le32toh(bb.magic) != PMAX_BOOT_MAGIC) { 171 warnx( 172 "Old boot block magic number invalid; boot block invalid"); 173 return (0); 174 } 175 176 bb.map[0].num_blocks = bb.map[0].start_block = bb.mode = 0; 177 bb.magic = htole32(PMAX_BOOT_MAGIC); 178 179 if (params->flags & IB_SUNSUM) { 180 uint16_t sum; 181 182 sum = compute_sunsum((uint16_t *)&bb); 183 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 184 return (0); 185 } 186 187 if (params->flags & IB_VERBOSE) 188 printf("%slearing boot block\n", 189 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 190 if (params->flags & IB_NOWRITE) 191 return (1); 192 193 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 194 if (rv == -1) { 195 warn("Writing `%s'", params->filesystem); 196 return (0); 197 } else if (rv != sizeof(bb)) { 198 warnx("Writing `%s': short write", params->filesystem); 199 return (0); 200 } 201 202 return (1); 203 } 204 205 int 206 pmax_setboot(ib_params *params) 207 { 208 struct stat bootstrapsb; 209 struct pmax_boot_block bb; 210 uint32_t startblock; 211 int retval; 212 char *bootstrapbuf; 213 size_t bootstrapsize; 214 uint32_t bootstrapload, bootstrapexec; 215 ssize_t rv; 216 217 assert(params != NULL); 218 assert(params->fsfd != -1); 219 assert(params->filesystem != NULL); 220 assert(params->s1fd != -1); 221 assert(params->stage1 != NULL); 222 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 223 224 retval = 0; 225 bootstrapbuf = NULL; 226 227 if ((params->flags & IB_STARTBLOCK) && 228 (params->flags & IB_APPEND)) { 229 warnx("Can't use `-b bno' with `-o append'"); 230 goto done; 231 } 232 233 if (fstat(params->s1fd, &bootstrapsb) == -1) { 234 warn("Examining `%s'", params->stage1); 235 goto done; 236 } 237 if (!S_ISREG(bootstrapsb.st_mode)) { 238 warnx("`%s' must be a regular file", params->stage1); 239 goto done; 240 } 241 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 242 &bootstrapexec, &bootstrapsize)) 243 goto done; 244 245 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 246 if (rv == -1) { 247 warn("Reading `%s'", params->filesystem); 248 goto done; 249 } else if (rv != sizeof(bb)) { 250 warnx("Reading `%s': short read", params->filesystem); 251 goto done; 252 } 253 254 /* fill in the updated boot block fields */ 255 if (params->flags & IB_APPEND) { 256 struct stat filesyssb; 257 258 if (fstat(params->fsfd, &filesyssb) == -1) { 259 warn("Examining `%s'", params->filesystem); 260 goto done; 261 } 262 if (!S_ISREG(filesyssb.st_mode)) { 263 warnx( 264 "`%s' must be a regular file to append a bootstrap", 265 params->filesystem); 266 goto done; 267 } 268 startblock = howmany(filesyssb.st_size, 269 PMAX_BOOT_BLOCK_BLOCKSIZE); 270 } else if (params->flags & IB_STARTBLOCK) { 271 startblock = params->startblock; 272 } else { 273 startblock = PMAX_BOOT_BLOCK_OFFSET / PMAX_BOOT_BLOCK_BLOCKSIZE 274 + 1; 275 } 276 277 bb.map[0].start_block = htole32(startblock); 278 bb.map[0].num_blocks = 279 htole32(howmany(bootstrapsize, PMAX_BOOT_BLOCK_BLOCKSIZE)); 280 bb.magic = htole32(PMAX_BOOT_MAGIC); 281 bb.load_addr = htole32(bootstrapload); 282 bb.exec_addr = htole32(bootstrapexec); 283 bb.mode = htole32(PMAX_BOOTMODE_CONTIGUOUS); 284 285 if (params->flags & IB_SUNSUM) { 286 uint16_t sum; 287 288 sum = compute_sunsum((uint16_t *)&bb); 289 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 290 goto done; 291 } 292 293 if (params->flags & IB_VERBOSE) { 294 printf("Bootstrap start sector: %#x\n", 295 le32toh(bb.map[0].start_block)); 296 printf("Bootstrap sector count: %#x\n", 297 le32toh(bb.map[0].num_blocks)); 298 printf("Bootstrap load address: %#x\n", 299 le32toh(bb.load_addr)); 300 printf("Bootstrap exec address: %#x\n", 301 le32toh(bb.exec_addr)); 302 printf("%sriting bootstrap\n", 303 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 304 } 305 if (params->flags & IB_NOWRITE) { 306 retval = 1; 307 goto done; 308 } 309 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 310 startblock * PMAX_BOOT_BLOCK_BLOCKSIZE); 311 if (rv == -1) { 312 warn("Writing `%s'", params->filesystem); 313 goto done; 314 } else if (rv != bootstrapsize) { 315 warnx("Writing `%s': short write", params->filesystem); 316 goto done; 317 } 318 319 if (params->flags & IB_VERBOSE) 320 printf("Writing boot block\n"); 321 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 322 if (rv == -1) { 323 warn("Writing `%s'", params->filesystem); 324 goto done; 325 } else if (rv != sizeof(bb)) { 326 warnx("Writing `%s': short write", params->filesystem); 327 goto done; 328 } else { 329 retval = 1; 330 } 331 332 done: 333 if (bootstrapbuf) 334 free(bootstrapbuf); 335 return (retval); 336 } 337 338 339 #define MAX_SEGMENTS 10 /* We can load up to 10 segments */ 340 341 struct seglist { 342 Elf32_Addr addr; 343 Elf32_Off f_offset; 344 Elf32_Word f_size; 345 }; 346 347 static int 348 load_bootstrap(ib_params *params, char **data, 349 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 350 { 351 int i, nsegs; 352 Elf32_Addr lowaddr, highaddr; 353 Elf32_Ehdr ehdr; 354 Elf32_Phdr phdr; 355 struct seglist seglist[MAX_SEGMENTS]; 356 357 if ((pread(params->s1fd, &ehdr, sizeof(ehdr), 0)) != sizeof(ehdr)) { 358 warn("Reading `%s'", params->stage1); 359 return (0); 360 } 361 if ((memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || 362 (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { 363 warnx("No ELF header in `%s'", params->stage1); 364 return (0); 365 } 366 367 nsegs = highaddr = 0; 368 lowaddr = (uint32_t) ULONG_MAX; 369 370 for (i = 0; i < le16toh(ehdr.e_phnum); i++) { 371 if (pread(params->s1fd, &phdr, sizeof(phdr), 372 (off_t) le32toh(ehdr.e_phoff) + i * sizeof(phdr)) 373 != sizeof(phdr)) { 374 warn("Reading `%s'", params->stage1); 375 return (0); 376 } 377 if (le32toh(phdr.p_type) != PT_LOAD) 378 continue; 379 380 seglist[nsegs].addr = le32toh(phdr.p_paddr); 381 seglist[nsegs].f_offset = le32toh(phdr.p_offset); 382 seglist[nsegs].f_size = le32toh(phdr.p_filesz); 383 nsegs++; 384 385 if (le32toh(phdr.p_paddr) < lowaddr) 386 lowaddr = le32toh(phdr.p_paddr); 387 if (le32toh(phdr.p_paddr) + le32toh(phdr.p_filesz) > highaddr) 388 highaddr = le32toh(phdr.p_paddr) + 389 le32toh(phdr.p_filesz); 390 } 391 392 *loadaddr = lowaddr; 393 *execaddr = le32toh(ehdr.e_entry); 394 *len = roundup(highaddr - lowaddr, PMAX_BOOT_BLOCK_BLOCKSIZE); 395 if ((*data = malloc(*len)) == NULL) { 396 warn("Allocating %lu bytes", (unsigned long) *len); 397 return (0); 398 } 399 400 /* Now load the bootstrap into memory */ 401 for (i = 0; i < nsegs; i++) { 402 if (pread(params->s1fd, *data + seglist[i].addr - lowaddr, 403 seglist[i].f_size, (off_t)seglist[i].f_offset) 404 != seglist[i].f_size) { 405 warn("Reading `%s'", params->stage1); 406 return (0); 407 } 408 } 409 return (1); 410 } 411
Indexes created Sun Sep 21 20:09:37 GMT 2025