1 /* $NetBSD: pmax.c,v 1.9 2002/05/15 02:18:23 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 1.9 2002/05/15 02:18:23 lukem Exp $"); 105 #endif /* !__lint */ 106 107 #if HAVE_CONFIG_H 108 #include "config.h" 109 #endif 110 111 #include <sys/param.h> 112 113 #include <assert.h> 114 #include <err.h> 115 #include <stddef.h> 116 #include <stdio.h> 117 #include <stdlib.h> 118 #include <string.h> 119 #include <unistd.h> 120 121 #include <sys/exec_elf.h> 122 123 #include "installboot.h" 124 125 static int load_bootstrap(ib_params *, char **, 126 uint32_t *, uint32_t *, size_t *); 127 128 129 int 130 pmax_parseopt(ib_params *params, const char *option) 131 { 132 133 if (parseoptionflag(params, option, IB_APPEND | IB_SUNSUM)) 134 return (1); 135 136 warnx("Unknown -o option `%s'", option); 137 return (0); 138 } 139 140 int 141 pmax_clearboot(ib_params *params) 142 { 143 struct pmax_boot_block bb; 144 ssize_t rv; 145 146 assert(params != NULL); 147 assert(params->fsfd != -1); 148 assert(params->filesystem != NULL); 149 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 150 151 if (params->flags & (IB_STAGE1START | IB_APPEND)) { 152 warnx("Can't use `-b bno' or `-o append' with `-c'"); 153 return (0); 154 } 155 if (params->flags & IB_STAGE2START) { 156 warnx("`-B bno' is not supported for %s", 157 params->machine->name); 158 return (0); 159 } 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 pmax_boot_block bb; 209 uint32_t startblock; 210 int retval; 211 char *bootstrapbuf; 212 size_t bootstrapsize; 213 uint32_t bootstrapload, bootstrapexec; 214 ssize_t rv; 215 216 assert(params != NULL); 217 assert(params->fsfd != -1); 218 assert(params->filesystem != NULL); 219 assert(params->s1fd != -1); 220 assert(params->stage1 != NULL); 221 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 222 223 retval = 0; 224 bootstrapbuf = NULL; 225 226 if ((params->flags & IB_STAGE1START) && 227 (params->flags & IB_APPEND)) { 228 warnx("Can't use `-b bno' with `-o append'"); 229 goto done; 230 } 231 if (params->flags & IB_STAGE2START) { 232 warnx("`-B bno' is not supported for %s", 233 params->machine->name); 234 goto done; 235 } 236 237 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 238 &bootstrapexec, &bootstrapsize)) 239 goto done; 240 241 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 242 if (rv == -1) { 243 warn("Reading `%s'", params->filesystem); 244 goto done; 245 } else if (rv != sizeof(bb)) { 246 warnx("Reading `%s': short read", params->filesystem); 247 goto done; 248 } 249 250 /* fill in the updated boot block fields */ 251 if (params->flags & IB_APPEND) { 252 if (! S_ISREG(params->fsstat.st_mode)) { 253 warnx( 254 "`%s' must be a regular file to append a bootstrap", 255 params->filesystem); 256 goto done; 257 } 258 startblock = howmany(params->fsstat.st_size, 259 PMAX_BOOT_BLOCK_BLOCKSIZE); 260 } else if (params->flags & IB_STAGE1START) { 261 startblock = params->s1start; 262 } else { 263 startblock = PMAX_BOOT_BLOCK_OFFSET / PMAX_BOOT_BLOCK_BLOCKSIZE 264 + 1; 265 } 266 267 bb.map[0].start_block = htole32(startblock); 268 bb.map[0].num_blocks = 269 htole32(howmany(bootstrapsize, PMAX_BOOT_BLOCK_BLOCKSIZE)); 270 bb.magic = htole32(PMAX_BOOT_MAGIC); 271 bb.load_addr = htole32(bootstrapload); 272 bb.exec_addr = htole32(bootstrapexec); 273 bb.mode = htole32(PMAX_BOOTMODE_CONTIGUOUS); 274 275 if (params->flags & IB_SUNSUM) { 276 uint16_t sum; 277 278 sum = compute_sunsum((uint16_t *)&bb); 279 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 280 goto done; 281 } 282 283 if (params->flags & IB_VERBOSE) { 284 printf("Bootstrap start sector: %u\n", 285 le32toh(bb.map[0].start_block)); 286 printf("Bootstrap sector count: %u\n", 287 le32toh(bb.map[0].num_blocks)); 288 printf("Bootstrap load address: %#x\n", 289 le32toh(bb.load_addr)); 290 printf("Bootstrap exec address: %#x\n", 291 le32toh(bb.exec_addr)); 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 * PMAX_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), PMAX_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 } 327 328 329 #define MAX_SEGMENTS 10 /* We can load up to 10 segments */ 330 331 struct seglist { 332 Elf32_Addr addr; 333 Elf32_Off f_offset; 334 Elf32_Word f_size; 335 }; 336 337 static int 338 load_bootstrap(ib_params *params, char **data, 339 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 340 { 341 int i, nsegs; 342 Elf32_Addr lowaddr, highaddr; 343 Elf32_Ehdr ehdr; 344 Elf32_Phdr phdr; 345 struct seglist seglist[MAX_SEGMENTS]; 346 347 if ((pread(params->s1fd, &ehdr, sizeof(ehdr), 0)) != sizeof(ehdr)) { 348 warn("Reading `%s'", params->stage1); 349 return (0); 350 } 351 if ((memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || 352 (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { 353 warnx("No ELF header in `%s'", params->stage1); 354 return (0); 355 } 356 357 nsegs = highaddr = 0; 358 lowaddr = (uint32_t) ULONG_MAX; 359 360 for (i = 0; i < le16toh(ehdr.e_phnum); i++) { 361 if (pread(params->s1fd, &phdr, sizeof(phdr), 362 (off_t) le32toh(ehdr.e_phoff) + i * sizeof(phdr)) 363 != sizeof(phdr)) { 364 warn("Reading `%s'", params->stage1); 365 return (0); 366 } 367 if (le32toh(phdr.p_type) != PT_LOAD) 368 continue; 369 370 seglist[nsegs].addr = le32toh(phdr.p_paddr); 371 seglist[nsegs].f_offset = le32toh(phdr.p_offset); 372 seglist[nsegs].f_size = le32toh(phdr.p_filesz); 373 nsegs++; 374 375 if (le32toh(phdr.p_paddr) < lowaddr) 376 lowaddr = le32toh(phdr.p_paddr); 377 if (le32toh(phdr.p_paddr) + le32toh(phdr.p_filesz) > highaddr) 378 highaddr = le32toh(phdr.p_paddr) + 379 le32toh(phdr.p_filesz); 380 } 381 382 *loadaddr = lowaddr; 383 *execaddr = le32toh(ehdr.e_entry); 384 *len = roundup(highaddr - lowaddr, PMAX_BOOT_BLOCK_BLOCKSIZE); 385 if ((*data = malloc(*len)) == NULL) { 386 warn("Allocating %lu bytes", (unsigned long) *len); 387 return (0); 388 } 389 390 /* Now load the bootstrap into memory */ 391 for (i = 0; i < nsegs; i++) { 392 if (pread(params->s1fd, *data + seglist[i].addr - lowaddr, 393 seglist[i].f_size, (off_t)seglist[i].f_offset) 394 != seglist[i].f_size) { 395 warn("Reading `%s'", params->stage1); 396 return (0); 397 } 398 } 399 return (1); 400 } 401