pmax.c revision 1.12
1 /* $NetBSD: pmax.c,v 1.12 2006/02/18 10:08:07 dsl 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 #if HAVE_NBTOOL_CONFIG_H 103 #include "nbtool_config.h" 104 #endif 105 106 #include <sys/cdefs.h> 107 #if !defined(__lint) 108 __RCSID("$NetBSD: pmax.c,v 1.12 2006/02/18 10:08:07 dsl Exp $"); 109 #endif /* !__lint */ 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 static int pmax_clearboot(ib_params *); 129 static int pmax_setboot(ib_params *); 130 131 struct ib_mach ib_mach_pmax = 132 { "pmax", pmax_setboot, pmax_clearboot, no_editboot, 133 IB_STAGE1START | IB_APPEND | IB_SUNSUM }; 134 135 136 static int 137 pmax_clearboot(ib_params *params) 138 { 139 struct pmax_boot_block bb; 140 ssize_t rv; 141 142 assert(params != NULL); 143 assert(params->fsfd != -1); 144 assert(params->filesystem != NULL); 145 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 146 147 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 148 if (rv == -1) { 149 warn("Reading `%s'", params->filesystem); 150 return (0); 151 } else if (rv != sizeof(bb)) { 152 warnx("Reading `%s': short read", params->filesystem); 153 return (0); 154 } 155 156 if (le32toh(bb.magic) != PMAX_BOOT_MAGIC) { 157 warnx( 158 "Old boot block magic number invalid; boot block invalid"); 159 return (0); 160 } 161 162 bb.map[0].num_blocks = bb.map[0].start_block = bb.mode = 0; 163 bb.magic = htole32(PMAX_BOOT_MAGIC); 164 165 if (params->flags & IB_SUNSUM) { 166 uint16_t sum; 167 168 sum = compute_sunsum((uint16_t *)&bb); 169 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 170 return (0); 171 } 172 173 if (params->flags & IB_VERBOSE) 174 printf("%slearing boot block\n", 175 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 176 if (params->flags & IB_NOWRITE) 177 return (1); 178 179 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 180 if (rv == -1) { 181 warn("Writing `%s'", params->filesystem); 182 return (0); 183 } else if (rv != sizeof(bb)) { 184 warnx("Writing `%s': short write", params->filesystem); 185 return (0); 186 } 187 188 return (1); 189 } 190 191 static int 192 pmax_setboot(ib_params *params) 193 { 194 struct pmax_boot_block bb; 195 uint32_t startblock; 196 int retval; 197 char *bootstrapbuf; 198 size_t bootstrapsize; 199 uint32_t bootstrapload, bootstrapexec; 200 ssize_t rv; 201 202 assert(params != NULL); 203 assert(params->fsfd != -1); 204 assert(params->filesystem != NULL); 205 assert(params->s1fd != -1); 206 assert(params->stage1 != NULL); 207 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 208 209 retval = 0; 210 bootstrapbuf = NULL; 211 212 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 213 &bootstrapexec, &bootstrapsize)) 214 goto done; 215 216 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 217 if (rv == -1) { 218 warn("Reading `%s'", params->filesystem); 219 goto done; 220 } else if (rv != sizeof(bb)) { 221 warnx("Reading `%s': short read", params->filesystem); 222 goto done; 223 } 224 225 /* fill in the updated boot block fields */ 226 if (params->flags & IB_APPEND) { 227 if (! S_ISREG(params->fsstat.st_mode)) { 228 warnx( 229 "`%s' must be a regular file to append a bootstrap", 230 params->filesystem); 231 goto done; 232 } 233 startblock = howmany(params->fsstat.st_size, 234 PMAX_BOOT_BLOCK_BLOCKSIZE); 235 } else if (params->flags & IB_STAGE1START) { 236 startblock = params->s1start; 237 } else { 238 startblock = PMAX_BOOT_BLOCK_OFFSET / PMAX_BOOT_BLOCK_BLOCKSIZE 239 + 1; 240 } 241 242 bb.map[0].start_block = htole32(startblock); 243 bb.map[0].num_blocks = 244 htole32(howmany(bootstrapsize, PMAX_BOOT_BLOCK_BLOCKSIZE)); 245 bb.magic = htole32(PMAX_BOOT_MAGIC); 246 bb.load_addr = htole32(bootstrapload); 247 bb.exec_addr = htole32(bootstrapexec); 248 bb.mode = htole32(PMAX_BOOTMODE_CONTIGUOUS); 249 250 if (params->flags & IB_SUNSUM) { 251 uint16_t sum; 252 253 sum = compute_sunsum((uint16_t *)&bb); 254 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 255 goto done; 256 } 257 258 if (params->flags & IB_VERBOSE) { 259 printf("Bootstrap start sector: %u\n", 260 le32toh(bb.map[0].start_block)); 261 printf("Bootstrap sector count: %u\n", 262 le32toh(bb.map[0].num_blocks)); 263 printf("Bootstrap load address: %#x\n", 264 le32toh(bb.load_addr)); 265 printf("Bootstrap exec address: %#x\n", 266 le32toh(bb.exec_addr)); 267 printf("%sriting bootstrap\n", 268 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 269 } 270 if (params->flags & IB_NOWRITE) { 271 retval = 1; 272 goto done; 273 } 274 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 275 startblock * PMAX_BOOT_BLOCK_BLOCKSIZE); 276 if (rv == -1) { 277 warn("Writing `%s'", params->filesystem); 278 goto done; 279 } else if (rv != bootstrapsize) { 280 warnx("Writing `%s': short write", params->filesystem); 281 goto done; 282 } 283 284 if (params->flags & IB_VERBOSE) 285 printf("Writing boot block\n"); 286 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 287 if (rv == -1) { 288 warn("Writing `%s'", params->filesystem); 289 goto done; 290 } else if (rv != sizeof(bb)) { 291 warnx("Writing `%s': short write", params->filesystem); 292 goto done; 293 } else { 294 retval = 1; 295 } 296 297 done: 298 if (bootstrapbuf) 299 free(bootstrapbuf); 300 return (retval); 301 } 302 303 304 #define MAX_SEGMENTS 10 /* We can load up to 10 segments */ 305 306 struct seglist { 307 Elf32_Addr addr; 308 Elf32_Off f_offset; 309 Elf32_Word f_size; 310 }; 311 312 static int 313 load_bootstrap(ib_params *params, char **data, 314 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 315 { 316 int i, nsegs; 317 Elf32_Addr lowaddr, highaddr; 318 Elf32_Ehdr ehdr; 319 Elf32_Phdr phdr; 320 struct seglist seglist[MAX_SEGMENTS]; 321 322 if ((pread(params->s1fd, &ehdr, sizeof(ehdr), 0)) != sizeof(ehdr)) { 323 warn("Reading `%s'", params->stage1); 324 return (0); 325 } 326 if ((memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || 327 (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { 328 warnx("No ELF header in `%s'", params->stage1); 329 return (0); 330 } 331 332 nsegs = highaddr = 0; 333 lowaddr = (uint32_t) ULONG_MAX; 334 335 for (i = 0; i < le16toh(ehdr.e_phnum); i++) { 336 if (pread(params->s1fd, &phdr, sizeof(phdr), 337 (off_t) le32toh(ehdr.e_phoff) + i * sizeof(phdr)) 338 != sizeof(phdr)) { 339 warn("Reading `%s'", params->stage1); 340 return (0); 341 } 342 if (le32toh(phdr.p_type) != PT_LOAD) 343 continue; 344 345 seglist[nsegs].addr = le32toh(phdr.p_paddr); 346 seglist[nsegs].f_offset = le32toh(phdr.p_offset); 347 seglist[nsegs].f_size = le32toh(phdr.p_filesz); 348 nsegs++; 349 350 if (le32toh(phdr.p_paddr) < lowaddr) 351 lowaddr = le32toh(phdr.p_paddr); 352 if (le32toh(phdr.p_paddr) + le32toh(phdr.p_filesz) > highaddr) 353 highaddr = le32toh(phdr.p_paddr) + 354 le32toh(phdr.p_filesz); 355 } 356 357 *loadaddr = lowaddr; 358 *execaddr = le32toh(ehdr.e_entry); 359 *len = roundup(highaddr - lowaddr, PMAX_BOOT_BLOCK_BLOCKSIZE); 360 if ((*data = malloc(*len)) == NULL) { 361 warn("Allocating %lu bytes", (unsigned long) *len); 362 return (0); 363 } 364 365 /* Now load the bootstrap into memory */ 366 for (i = 0; i < nsegs; i++) { 367 if (pread(params->s1fd, *data + seglist[i].addr - lowaddr, 368 seglist[i].f_size, (off_t)seglist[i].f_offset) 369 != seglist[i].f_size) { 370 warn("Reading `%s'", params->stage1); 371 return (0); 372 } 373 } 374 return (1); 375 } 376
Indexes created Sun Sep 21 20:09:37 GMT 2025