1 /* $NetBSD: pmax.c,v 1.16 2019/05/07 04:35:31 thorpej 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 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1999 Ross Harvey. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by Ross Harvey 49 * for the NetBSD Project. 50 * 4. The name of the author may not be used to endorse or promote products 51 * derived from this software without specific prior written permission 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 56 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 58 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 62 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 */ 64 65 /* 66 * Copyright (c) 1999 Christopher G. Demetriou. All rights reserved. 67 * 68 * Redistribution and use in source and binary forms, with or without 69 * modification, are permitted provided that the following conditions 70 * are met: 71 * 1. Redistributions of source code must retain the above copyright 72 * notice, this list of conditions and the following disclaimer. 73 * 2. Redistributions in binary form must reproduce the above copyright 74 * notice, this list of conditions and the following disclaimer in the 75 * documentation and/or other materials provided with the distribution. 76 * 3. All advertising materials mentioning features or use of this software 77 * must display the following acknowledgement: 78 * This product includes software developed by Christopher G. Demetriou 79 * for the NetBSD Project. 80 * 4. The name of the author may not be used to endorse or promote products 81 * derived from this software without specific prior written permission 82 * 83 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 84 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 85 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 86 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 87 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 88 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 89 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 90 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 91 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 92 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 93 */ 94 95 #if HAVE_NBTOOL_CONFIG_H 96 #include "nbtool_config.h" 97 #endif 98 99 #include <sys/cdefs.h> 100 #if !defined(__lint) 101 __RCSID("$NetBSD: pmax.c,v 1.16 2019/05/07 04:35:31 thorpej Exp $"); 102 #endif /* !__lint */ 103 104 #include <sys/param.h> 105 106 #include <assert.h> 107 #include <err.h> 108 #include <stddef.h> 109 #include <stdio.h> 110 #include <stdlib.h> 111 #include <string.h> 112 #include <unistd.h> 113 114 #include <sys/exec_elf.h> 115 116 #include "installboot.h" 117 118 static int load_bootstrap(ib_params *, char **, 119 uint32_t *, uint32_t *, size_t *); 120 121 static int pmax_clearboot(ib_params *); 122 static int pmax_setboot(ib_params *); 123 124 struct ib_mach ib_mach_pmax = { 125 .name = "pmax", 126 .setboot = pmax_setboot, 127 .clearboot = pmax_clearboot, 128 .editboot = no_editboot, 129 .valid_flags = IB_STAGE1START | IB_APPEND | IB_SUNSUM, 130 }; 131 132 133 static int 134 pmax_clearboot(ib_params *params) 135 { 136 struct pmax_boot_block bb; 137 ssize_t rv; 138 139 assert(params != NULL); 140 assert(params->fsfd != -1); 141 assert(params->filesystem != NULL); 142 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 143 144 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 145 if (rv == -1) { 146 warn("Reading `%s'", params->filesystem); 147 return (0); 148 } else if (rv != sizeof(bb)) { 149 warnx("Reading `%s': short read", params->filesystem); 150 return (0); 151 } 152 153 if (le32toh(bb.magic) != PMAX_BOOT_MAGIC) { 154 warnx( 155 "Old boot block magic number invalid; boot block invalid"); 156 return (0); 157 } 158 159 bb.map[0].num_blocks = bb.map[0].start_block = bb.mode = 0; 160 bb.magic = htole32(PMAX_BOOT_MAGIC); 161 162 if (params->flags & IB_SUNSUM) { 163 uint16_t sum; 164 165 sum = compute_sunsum((uint16_t *)&bb); 166 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 167 return (0); 168 } 169 170 if (params->flags & IB_VERBOSE) 171 printf("%slearing boot block\n", 172 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 173 if (params->flags & IB_NOWRITE) 174 return (1); 175 176 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 177 if (rv == -1) { 178 warn("Writing `%s'", params->filesystem); 179 return (0); 180 } else if (rv != sizeof(bb)) { 181 warnx("Writing `%s': short write", params->filesystem); 182 return (0); 183 } 184 185 return (1); 186 } 187 188 static int 189 pmax_setboot(ib_params *params) 190 { 191 struct pmax_boot_block bb; 192 uint32_t startblock; 193 int retval; 194 char *bootstrapbuf; 195 size_t bootstrapsize = 0; /* XXX: gcc */ 196 uint32_t bootstrapload, bootstrapexec; 197 ssize_t rv; 198 199 assert(params != NULL); 200 assert(params->fsfd != -1); 201 assert(params->filesystem != NULL); 202 assert(params->s1fd != -1); 203 assert(params->stage1 != NULL); 204 assert(sizeof(struct pmax_boot_block) == PMAX_BOOT_BLOCK_BLOCKSIZE); 205 206 retval = 0; 207 bootstrapbuf = NULL; 208 209 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 210 &bootstrapexec, &bootstrapsize)) 211 goto done; 212 213 rv = pread(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 214 if (rv == -1) { 215 warn("Reading `%s'", params->filesystem); 216 goto done; 217 } else if (rv != sizeof(bb)) { 218 warnx("Reading `%s': short read", params->filesystem); 219 goto done; 220 } 221 222 /* fill in the updated boot block fields */ 223 if (params->flags & IB_APPEND) { 224 if (! S_ISREG(params->fsstat.st_mode)) { 225 warnx( 226 "`%s' must be a regular file to append a bootstrap", 227 params->filesystem); 228 goto done; 229 } 230 startblock = howmany(params->fsstat.st_size, 231 PMAX_BOOT_BLOCK_BLOCKSIZE); 232 } else if (params->flags & IB_STAGE1START) { 233 startblock = params->s1start; 234 } else { 235 startblock = PMAX_BOOT_BLOCK_OFFSET / PMAX_BOOT_BLOCK_BLOCKSIZE 236 + 1; 237 } 238 239 bb.map[0].start_block = htole32(startblock); 240 bb.map[0].num_blocks = 241 htole32(howmany(bootstrapsize, PMAX_BOOT_BLOCK_BLOCKSIZE)); 242 bb.magic = htole32(PMAX_BOOT_MAGIC); 243 bb.load_addr = htole32(bootstrapload); 244 bb.exec_addr = htole32(bootstrapexec); 245 bb.mode = htole32(PMAX_BOOTMODE_CONTIGUOUS); 246 247 if (params->flags & IB_SUNSUM) { 248 uint16_t sum; 249 250 sum = compute_sunsum((uint16_t *)&bb); 251 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 252 goto done; 253 } 254 255 if (params->flags & IB_VERBOSE) { 256 printf("Bootstrap start sector: %u\n", 257 le32toh(bb.map[0].start_block)); 258 printf("Bootstrap sector count: %u\n", 259 le32toh(bb.map[0].num_blocks)); 260 printf("Bootstrap load address: %#x\n", 261 le32toh(bb.load_addr)); 262 printf("Bootstrap exec address: %#x\n", 263 le32toh(bb.exec_addr)); 264 printf("%sriting bootstrap\n", 265 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 266 } 267 if (params->flags & IB_NOWRITE) { 268 retval = 1; 269 goto done; 270 } 271 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 272 startblock * PMAX_BOOT_BLOCK_BLOCKSIZE); 273 if (rv == -1) { 274 warn("Writing `%s'", params->filesystem); 275 goto done; 276 } else if ((size_t)rv != bootstrapsize) { 277 warnx("Writing `%s': short write", params->filesystem); 278 goto done; 279 } 280 281 if (params->flags & IB_VERBOSE) 282 printf("Writing boot block\n"); 283 rv = pwrite(params->fsfd, &bb, sizeof(bb), PMAX_BOOT_BLOCK_OFFSET); 284 if (rv == -1) { 285 warn("Writing `%s'", params->filesystem); 286 goto done; 287 } else if (rv != sizeof(bb)) { 288 warnx("Writing `%s': short write", params->filesystem); 289 goto done; 290 } else { 291 retval = 1; 292 } 293 294 done: 295 if (bootstrapbuf) 296 free(bootstrapbuf); 297 return (retval); 298 } 299 300 301 #define MAX_SEGMENTS 10 /* We can load up to 10 segments */ 302 303 struct seglist { 304 Elf32_Addr addr; 305 Elf32_Off f_offset; 306 Elf32_Word f_size; 307 }; 308 309 static int 310 load_bootstrap(ib_params *params, char **data, 311 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 312 { 313 int i, nsegs; 314 Elf32_Addr lowaddr, highaddr; 315 Elf32_Ehdr ehdr; 316 Elf32_Phdr phdr; 317 struct seglist seglist[MAX_SEGMENTS]; 318 319 if ((pread(params->s1fd, &ehdr, sizeof(ehdr), 0)) != sizeof(ehdr)) { 320 warn("Reading `%s'", params->stage1); 321 return (0); 322 } 323 if ((memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || 324 (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { 325 warnx("No ELF header in `%s'", params->stage1); 326 return (0); 327 } 328 329 nsegs = highaddr = 0; 330 lowaddr = (uint32_t) ULONG_MAX; 331 332 for (i = 0; i < le16toh(ehdr.e_phnum); i++) { 333 if (pread(params->s1fd, &phdr, sizeof(phdr), 334 (off_t) le32toh(ehdr.e_phoff) + i * sizeof(phdr)) 335 != sizeof(phdr)) { 336 warn("Reading `%s'", params->stage1); 337 return (0); 338 } 339 if (le32toh(phdr.p_type) != PT_LOAD) 340 continue; 341 342 seglist[nsegs].addr = le32toh(phdr.p_paddr); 343 seglist[nsegs].f_offset = le32toh(phdr.p_offset); 344 seglist[nsegs].f_size = le32toh(phdr.p_filesz); 345 nsegs++; 346 347 if (le32toh(phdr.p_paddr) < lowaddr) 348 lowaddr = le32toh(phdr.p_paddr); 349 if (le32toh(phdr.p_paddr) + le32toh(phdr.p_filesz) > highaddr) 350 highaddr = le32toh(phdr.p_paddr) + 351 le32toh(phdr.p_filesz); 352 } 353 354 *loadaddr = lowaddr; 355 *execaddr = le32toh(ehdr.e_entry); 356 *len = roundup(highaddr - lowaddr, PMAX_BOOT_BLOCK_BLOCKSIZE); 357 if ((*data = malloc(*len)) == NULL) { 358 warn("Allocating %lu bytes", (unsigned long) *len); 359 return (0); 360 } 361 362 /* Now load the bootstrap into memory */ 363 for (i = 0; i < nsegs; i++) { 364 if ((Elf32_Word)pread(params->s1fd, 365 *data + seglist[i].addr - lowaddr, 366 seglist[i].f_size, (off_t)seglist[i].f_offset) 367 != seglist[i].f_size) { 368 warn("Reading `%s'", params->stage1); 369 return (0); 370 } 371 } 372 return (1); 373 } 374
Indexes created Sat Sep 20 22:09:52 GMT 2025