mkbootimage.c revision 1.20
1 /* $NetBSD: mkbootimage.c,v 1.20 2024/02/08 17:57:54 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Tim Rightnour and NONAKA Kimihiro 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #if HAVE_NBTOOL_CONFIG_H 33 #include "nbtool_config.h" 34 #include "../../sys/sys/bootblock.h" 35 #else 36 #include <sys/bootblock.h> 37 #endif 38 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <fcntl.h> 43 #include <unistd.h> 44 #include <errno.h> 45 #include <zlib.h> 46 #include <err.h> 47 #include <sys/stat.h> 48 #include <sys/types.h> 49 #include <sys/uio.h> 50 #include <sys/signal.h> 51 52 #undef USE_SYSCTL 53 54 #if defined(__NetBSD__) && !defined(HAVE_NBTOOL_CONFIG_H) 55 #define USE_SYSCTL 1 56 #include <sys/param.h> 57 #include <sys/sysctl.h> 58 #include <sys/utsname.h> 59 #endif 60 61 /* BFD ELF headers */ 62 #include <elf/common.h> 63 #include <elf/external.h> 64 65 #include "bebox_bootrec.h" 66 #include "byteorder.h" 67 #include "magic.h" 68 #include "pef.h" 69 #include "rs6000_bootrec.h" 70 71 /* Globals */ 72 73 int inkernflag = 1; 74 int saloneflag = 0; 75 int verboseflag = 0; 76 int lfloppyflag = 0; 77 Elf32_External_Ehdr hdr, khdr; 78 struct stat elf_stat; 79 unsigned char mbr[512]; 80 81 /* the boot and config records for rs6000 */ 82 rs6000_boot_record_t bootrec; 83 rs6000_config_record_t confrec; 84 85 /* supported platforms */ 86 char *sup_plats[] = { 87 "bebox", 88 "prep", 89 "rs6000", 90 NULL, 91 }; 92 93 /* 94 * Macros to get values from multi-byte ELF header fields. These assume 95 * a big-endian image. 96 */ 97 #define ELFGET16(x) (((x)[0] << 8) | (x)[1]) 98 99 #define ELFGET32(x) (((x)[0] << 24) | ((x)[1] << 16) | \ 100 ((x)[2] << 8) | (x)[3]) 101 102 #define ULALIGN(x) ((x + 0x0f) & 0xfffffff0) 103 104 static void usage(int); 105 static int open_file(const char *, char *, Elf32_External_Ehdr *, 106 struct stat *); 107 static void check_mbr(int, char *); 108 static void rs6000_build_records(int); 109 int main(int, char **); 110 111 112 static void 113 usage(int extended) 114 { 115 int i; 116 117 if (extended) { 118 fprintf(stderr, "You are not running this program on" 119 " the target machine. You must supply the\n" 120 "machine architecture with the -m flag\n"); 121 fprintf(stderr, "Supported architectures: "); 122 for (i=0; sup_plats[i] != NULL; i++) 123 fprintf(stderr, " %s", sup_plats[i]); 124 fprintf(stderr, "\n\n"); 125 } 126 #ifdef USE_SYSCTL 127 fprintf(stderr, "usage: %s [-Ilsv] [-m machine] [-b bootfile] " 128 "[-k kernel] [-r rawdev] [-t epoch] bootimage\n", getprogname()); 129 #else 130 fprintf(stderr, "usage: %s [-Ilsv] -m machine [-b bootfile] " 131 "[-k kernel] [-r rawdev] [-t epoch] bootimage\n", getprogname()); 132 #endif 133 exit(1); 134 } 135 136 /* verify the file is ELF and ppc, and open it up */ 137 static int 138 open_file(const char *ftype, char *file, Elf32_External_Ehdr *hdr, 139 struct stat *f_stat) 140 { 141 int fd; 142 143 if ((fd = open(file, 0)) < 0) 144 errx(2, "Can't open %s '%s': %s", ftype, file, strerror(errno)); 145 fstat(fd, f_stat); 146 147 if (read(fd, hdr, sizeof(Elf32_External_Ehdr)) != 148 sizeof(Elf32_External_Ehdr)) 149 errx(3, "Can't read input '%s': %s", file, strerror(errno)); 150 151 if (hdr->e_ident[EI_MAG0] != ELFMAG0 || 152 hdr->e_ident[EI_MAG1] != ELFMAG1 || 153 hdr->e_ident[EI_MAG2] != ELFMAG2 || 154 hdr->e_ident[EI_MAG3] != ELFMAG3 || 155 hdr->e_ident[EI_CLASS] != ELFCLASS32) 156 errx(3, "input '%s' is not ELF32 format", file); 157 158 if (hdr->e_ident[EI_DATA] != ELFDATA2MSB) 159 errx(3, "input '%s' is not big-endian", file); 160 161 if (ELFGET16(hdr->e_machine) != EM_PPC) 162 errx(3, "input '%s' is not PowerPC exec binary", file); 163 164 return fd; 165 } 166 167 static void 168 prep_check_mbr(int prep_fd, char *rawdev) 169 { 170 int raw_fd; 171 unsigned long entry, length; 172 struct mbr_partition *mbrp; 173 struct stat raw_stat; 174 175 /* If we are building a standalone image, do not write an MBR, just 176 * set entry point and boot image size skipping over elf header 177 */ 178 if (saloneflag) { 179 entry = sa_htole32(0x400); 180 length = sa_htole32(elf_stat.st_size - sizeof(hdr) + 0x400); 181 lseek(prep_fd, sizeof(mbr), SEEK_SET); 182 write(prep_fd, &entry, sizeof(entry)); 183 write(prep_fd, &length, sizeof(length)); 184 return; 185 } 186 187 /* 188 * if we have a raw device, we need to check to see if it already 189 * has a partition table, and if so, read it in and check for 190 * suitability. 191 */ 192 if (rawdev != NULL) { 193 raw_fd = open(rawdev, O_RDONLY, 0); 194 if (raw_fd == -1) 195 errx(3, "couldn't open raw device %s: %s", rawdev, 196 strerror(errno)); 197 198 fstat(raw_fd, &raw_stat); 199 if (!S_ISCHR(raw_stat.st_mode)) 200 errx(3, "%s is not a raw device", rawdev); 201 202 if (read(raw_fd, mbr, 512) != 512) 203 errx(3, "MBR Read Failed: %s", strerror(errno)); 204 205 mbrp = (struct mbr_partition *)&mbr[MBR_PART_OFFSET]; 206 if (mbrp->mbrp_type != MBR_PTYPE_PREP) 207 errx(3, "First partition is not of type 0x%x.", 208 MBR_PTYPE_PREP); 209 if (mbrp->mbrp_start != 0) 210 errx(3, "Use of the raw device is intended for" 211 " upgrading of legacy installations. Your" 212 " install does not have a PReP boot partition" 213 " starting at sector 0. Use the -s option" 214 " to build an image instead."); 215 216 /* if we got this far, we are fine, write back the partition 217 * and write the entry points and get outta here */ 218 /* Set entry point and boot image size skipping over elf header */ 219 lseek(prep_fd, 0, SEEK_SET); 220 entry = sa_htole32(0x400); 221 length = sa_htole32(elf_stat.st_size - sizeof(hdr) + 0x400); 222 write(prep_fd, mbr, sizeof(mbr)); 223 write(prep_fd, &entry, sizeof(entry)); 224 write(prep_fd, &length, sizeof(length)); 225 close(raw_fd); 226 return; 227 } 228 229 /* if we get to here, we want to build a standard floppy or netboot 230 * image to file, so just build it */ 231 232 memset(mbr, 0, sizeof(mbr)); 233 mbrp = (struct mbr_partition *)&mbr[MBR_PART_OFFSET]; 234 235 /* Set entry point and boot image size skipping over elf header */ 236 entry = sa_htole32(0x400); 237 length = sa_htole32(elf_stat.st_size - sizeof(hdr) + 0x400); 238 239 /* 240 * Set magic number for msdos partition 241 */ 242 *(unsigned short *)&mbr[MBR_MAGIC_OFFSET] = sa_htole16(MBR_MAGIC); 243 244 /* 245 * Build a "PReP" partition table entry in the boot record 246 * - "PReP" may only look at the system_indicator 247 */ 248 mbrp->mbrp_flag = MBR_PFLAG_ACTIVE; 249 mbrp->mbrp_type = MBR_PTYPE_PREP; 250 251 /* 252 * The first block of the diskette is used by this "boot record" which 253 * actually contains the partition table. (The first block of the 254 * partition contains the boot image, but I digress...) We'll set up 255 * one partition on the diskette and it shall contain the rest of the 256 * diskette. 257 */ 258 mbrp->mbrp_shd = 0; /* zero-based */ 259 mbrp->mbrp_ssect = 2; /* one-based */ 260 mbrp->mbrp_scyl = 0; /* zero-based */ 261 mbrp->mbrp_ehd = 1; /* assumes two heads */ 262 if (lfloppyflag) 263 mbrp->mbrp_esect = 36; /* 2.88MB floppy */ 264 else 265 mbrp->mbrp_esect = 18; /* assumes 18 sectors/track */ 266 mbrp->mbrp_ecyl = 79; /* assumes 80 cylinders/diskette */ 267 268 /* 269 * The "PReP" software ignores the above fields and just looks at 270 * the next two. 271 * - size of the diskette is (assumed to be) 272 * (2 tracks/cylinder)(18 sectors/tracks)(80 cylinders/diskette) 273 * - unlike the above sector numbers, 274 * the beginning sector is zero-based! 275 */ 276 277 /* This has to be 0 on the PowerStack? */ 278 mbrp->mbrp_start = sa_htole32(0); 279 mbrp->mbrp_size = sa_htole32(2 * 18 * 80 - 1); 280 281 write(prep_fd, mbr, sizeof(mbr)); 282 write(prep_fd, &entry, sizeof(entry)); 283 write(prep_fd, &length, sizeof(length)); 284 } 285 286 static int 287 prep_build_image(char *kernel, char *boot, char *rawdev, char *outname) 288 { 289 unsigned char *elf_img = NULL, *kern_img = NULL; 290 int i, ch, tmp, kgzlen, err; 291 int elf_fd, prep_fd, kern_fd, elf_img_len = 0; 292 off_t lenpos, kstart, kend; 293 unsigned long length; 294 long flength; 295 gzFile gzf; 296 struct stat kern_stat; 297 Elf32_External_Phdr phdr; 298 299 elf_fd = open_file("bootloader", boot, &hdr, &elf_stat); 300 if (inkernflag) { 301 kern_fd = open_file("kernel", kernel, &khdr, &kern_stat); 302 kern_len = kern_stat.st_size + PREP_MAGICSIZE + KERNLENSIZE; 303 } else 304 kern_len = PREP_MAGICSIZE + KERNLENSIZE; 305 306 for (i = 0; i < ELFGET16(hdr.e_phnum); i++) { 307 lseek(elf_fd, ELFGET32(hdr.e_phoff) + sizeof(phdr) * i, 308 SEEK_SET); 309 if (read(elf_fd, &phdr, sizeof(phdr)) != sizeof(phdr)) 310 errx(3, "Can't read input '%s' phdr : %s", boot, 311 strerror(errno)); 312 313 if ((ELFGET32(phdr.p_type) != PT_LOAD) || 314 !(ELFGET32(phdr.p_flags) & PF_X)) 315 continue; 316 317 fstat(elf_fd, &elf_stat); 318 elf_img_len = elf_stat.st_size - ELFGET32(phdr.p_offset); 319 lseek(elf_fd, ELFGET32(phdr.p_offset), SEEK_SET); 320 321 break; 322 } 323 if ((prep_fd = open(outname, O_RDWR|O_TRUNC, 0)) < 0) { 324 /* we couldn't open it, it must be new */ 325 prep_fd = creat(outname, 0644); 326 if (prep_fd < 0) 327 errx(2, "Can't open output '%s': %s", outname, 328 strerror(errno)); 329 } 330 331 prep_check_mbr(prep_fd, rawdev); 332 333 /* Set file pos. to 2nd sector where image will be written */ 334 lseek(prep_fd, 0x400, SEEK_SET); 335 336 /* Copy boot image */ 337 elf_img = malloc(elf_img_len); 338 if (!elf_img) 339 errx(3, "Can't malloc: %s", strerror(errno)); 340 if (read(elf_fd, elf_img, elf_img_len) != elf_img_len) 341 errx(3, "Can't read file '%s' : %s", boot, strerror(errno)); 342 343 write(prep_fd, elf_img, elf_img_len); 344 free(elf_img); 345 346 if (inkernflag) { 347 /* Copy kernel */ 348 kern_img = malloc(kern_stat.st_size); 349 350 if (kern_img == NULL) 351 errx(3, "Can't malloc: %s", strerror(errno)); 352 353 /* we need to jump back after having read the headers */ 354 lseek(kern_fd, 0, SEEK_SET); 355 if (read(kern_fd, (void *)kern_img, kern_stat.st_size) != 356 kern_stat.st_size) 357 errx(3, "Can't read kernel '%s' : %s", 358 kernel, strerror(errno)); 359 } 360 361 gzf = gzdopen(dup(prep_fd), "a"); 362 if (gzf == NULL) 363 errx(3, "Can't init compression: %s", strerror(errno)); 364 if (gzsetparams(gzf, Z_BEST_COMPRESSION, Z_DEFAULT_STRATEGY) != Z_OK) 365 errx(3, "%s", gzerror(gzf, &err)); 366 367 /* write a magic number and size before the kernel */ 368 write(prep_fd, (void *)prep_magic, PREP_MAGICSIZE); 369 lenpos = lseek(prep_fd, 0, SEEK_CUR); 370 tmp = sa_htobe32(0); 371 write(prep_fd, (void *)&tmp, KERNLENSIZE); 372 373 /* write in the compressed kernel */ 374 kstart = lseek(prep_fd, 0, SEEK_CUR); 375 if (inkernflag) { 376 kgzlen = gzwrite(gzf, kern_img, kern_stat.st_size); 377 gzclose(gzf); 378 } 379 kend = lseek(prep_fd, 0, SEEK_CUR); 380 381 /* jump back to the length position now that we know the length */ 382 lseek(prep_fd, lenpos, SEEK_SET); 383 kgzlen = kend - kstart; 384 tmp = sa_htobe32(kgzlen); 385 write(prep_fd, (void *)&tmp, KERNLENSIZE); 386 387 length = sa_htole32(0x400 + elf_img_len + 8 + kgzlen); 388 lseek(prep_fd, sizeof(mbr) + 4, SEEK_SET); 389 write(prep_fd, &length, sizeof(length)); 390 391 flength = 0x400 + elf_img_len + 8 + kgzlen; 392 if (lfloppyflag) 393 flength -= (5760 * 512); 394 else 395 flength -= (2880 * 512); 396 if (flength > 0 && !saloneflag) 397 fprintf(stderr, "%s: Image %s is %ld bytes larger than single" 398 " floppy. Can only be used for netboot.\n", getprogname(), 399 outname, flength); 400 401 if (inkernflag) { 402 free(kern_img); 403 close(kern_fd); 404 } 405 close(prep_fd); 406 close(elf_fd); 407 408 return 0; 409 } 410 411 /* Fill in the needed information on the boot and config records. Most of 412 * this is just AIX garbage that we don't really need to boot. 413 */ 414 static void 415 rs6000_build_records(int img_len) 416 { 417 int bcl; 418 419 /* zero out all the fields, so we only have to set the ones 420 * we care about, which are rather few. 421 */ 422 memset(&bootrec, 0, sizeof(rs6000_boot_record_t)); 423 memset(&confrec, 0, sizeof(rs6000_config_record_t)); 424 425 bootrec.ipl_record = IPLRECID; 426 bcl = img_len/512; 427 if (img_len%512 != 0) 428 bcl++; 429 bootrec.bootcode_len = bcl; 430 bootrec.bootcode_off = 0; /* XXX */ 431 bootrec.bootpart_start = 2; /* skip bootrec and confrec */ 432 bootrec.bootprg_start = 2; 433 bootrec.bootpart_len = bcl; 434 bootrec.boot_load_addr = 0x800000; /* XXX? */ 435 bootrec.boot_frag = 1; 436 bootrec.boot_emul = 0x02; /* ?? */ 437 /* service mode is a repeat of normal mode */ 438 bootrec.servcode_len = bootrec.bootcode_len; 439 bootrec.servcode_off = bootrec.bootcode_off; 440 bootrec.servpart_start = bootrec.bootpart_start; 441 bootrec.servprg_start = bootrec.bootprg_start; 442 bootrec.servpart_len = bootrec.bootpart_len; 443 bootrec.serv_load_addr = bootrec.boot_load_addr; 444 bootrec.serv_frag = bootrec.boot_frag; 445 bootrec.serv_emul = bootrec.boot_emul; 446 447 /* now the config record */ 448 confrec.conf_rec = CONFRECID; 449 confrec.sector_size = 0x02; /* 512 bytes */ 450 confrec.last_cyl = 0x4f; /* 79 cyl, emulates floppy */ 451 } 452 453 static int 454 rs6000_build_image(char *kernel, char *boot, char *rawdev, char *outname) 455 { 456 unsigned char *elf_img = NULL, *kern_img = NULL; 457 int i, ch, tmp, kgzlen, err; 458 int elf_fd, rs6000_fd, kern_fd, elf_img_len = 0, elf_pad; 459 uint32_t swapped[128]; 460 off_t lenpos, kstart, kend; 461 unsigned long length; 462 long flength; 463 gzFile gzf; 464 struct stat kern_stat; 465 Elf32_External_Phdr phdr; 466 467 elf_fd = open_file("bootloader", boot, &hdr, &elf_stat); 468 kern_fd = open_file("kernel", kernel, &khdr, &kern_stat); 469 kern_len = kern_stat.st_size + RS6000_MAGICSIZE + KERNLENSIZE; 470 471 for (i = 0; i < ELFGET16(hdr.e_phnum); i++) { 472 lseek(elf_fd, ELFGET32(hdr.e_phoff) + sizeof(phdr) * i, 473 SEEK_SET); 474 if (read(elf_fd, &phdr, sizeof(phdr)) != sizeof(phdr)) 475 errx(3, "Can't read input '%s' phdr : %s", boot, 476 strerror(errno)); 477 478 if ((ELFGET32(phdr.p_type) != PT_LOAD) || 479 !(ELFGET32(phdr.p_flags) & PF_X)) 480 continue; 481 482 fstat(elf_fd, &elf_stat); 483 elf_img_len = elf_stat.st_size - ELFGET32(phdr.p_offset); 484 elf_pad = ELFGET32(phdr.p_memsz) - ELFGET32(phdr.p_filesz); 485 if (verboseflag) 486 printf("Padding %d\n", elf_pad); 487 lseek(elf_fd, ELFGET32(phdr.p_offset), SEEK_SET); 488 489 break; 490 } 491 if ((rs6000_fd = open(outname, O_RDWR|O_TRUNC, 0)) < 0) { 492 /* we couldn't open it, it must be new */ 493 rs6000_fd = creat(outname, 0644); 494 if (rs6000_fd < 0) 495 errx(2, "Can't open output '%s': %s", outname, 496 strerror(errno)); 497 } 498 499 /* Set file pos. to 2nd sector where image will be written */ 500 lseek(rs6000_fd, 0x400, SEEK_SET); 501 502 /* Copy boot image */ 503 elf_img = malloc(elf_img_len); 504 if (!elf_img) 505 errx(3, "Can't malloc: %s", strerror(errno)); 506 if (read(elf_fd, elf_img, elf_img_len) != elf_img_len) 507 errx(3, "Can't read file '%s' : %s", boot, strerror(errno)); 508 509 write(rs6000_fd, elf_img, elf_img_len); 510 free(elf_img); 511 512 /* now dump in the padding space for the BSS */ 513 elf_pad += 100; /* just a little extra for good luck */ 514 lseek(rs6000_fd, elf_pad, SEEK_CUR); 515 516 /* Copy kernel */ 517 kern_img = malloc(kern_stat.st_size); 518 519 if (kern_img == NULL) 520 errx(3, "Can't malloc: %s", strerror(errno)); 521 522 /* we need to jump back after having read the headers */ 523 lseek(kern_fd, 0, SEEK_SET); 524 if (read(kern_fd, (void *)kern_img, kern_stat.st_size) != 525 kern_stat.st_size) 526 errx(3, "Can't read kernel '%s' : %s", kernel, strerror(errno)); 527 528 gzf = gzdopen(dup(rs6000_fd), "a"); 529 if (gzf == NULL) 530 errx(3, "Can't init compression: %s", strerror(errno)); 531 if (gzsetparams(gzf, Z_BEST_COMPRESSION, Z_DEFAULT_STRATEGY) != Z_OK) 532 errx(3, "%s", gzerror(gzf, &err)); 533 534 /* write a magic number and size before the kernel */ 535 write(rs6000_fd, (void *)rs6000_magic, RS6000_MAGICSIZE); 536 lenpos = lseek(rs6000_fd, 0, SEEK_CUR); 537 if (verboseflag) 538 printf("wrote magic at pos 0x%lx\n", (unsigned long)lenpos); 539 tmp = sa_htobe32(0); 540 write(rs6000_fd, (void *)&tmp, KERNLENSIZE); 541 542 /* write in the compressed kernel */ 543 kstart = lseek(rs6000_fd, 0, SEEK_CUR); 544 if (verboseflag) 545 printf("kernel start at pos 0x%lx\n", (unsigned long)kstart); 546 kgzlen = gzwrite(gzf, kern_img, kern_stat.st_size); 547 gzclose(gzf); 548 kend = lseek(rs6000_fd, 0, SEEK_CUR); 549 if (verboseflag) 550 printf("kernel end at pos 0x%lx\n", (unsigned long)kend); 551 552 /* jump back to the length position now that we know the length */ 553 lseek(rs6000_fd, lenpos, SEEK_SET); 554 kgzlen = kend - kstart; 555 tmp = sa_htobe32(kgzlen); 556 if (verboseflag) 557 printf("kernel len = 0x%x tmp = 0x%x\n", kgzlen, tmp); 558 write(rs6000_fd, (void *)&tmp, KERNLENSIZE); 559 560 #if 0 561 lseek(rs6000_fd, sizeof(boot_record_t) + sizeof(config_record_t), 562 SEEK_SET); 563 /* set entry and length */ 564 length = sa_htole32(0x400); 565 write(rs6000_fd, &length, sizeof(length)); 566 length = sa_htole32(0x400 + elf_img_len + 8 + kgzlen); 567 write(rs6000_fd, &length, sizeof(length)); 568 #endif 569 570 /* generate the header now that we know the kernel length */ 571 if (verboseflag) 572 printf("building records\n"); 573 rs6000_build_records(elf_img_len + 8 + kgzlen); 574 lseek(rs6000_fd, 0, SEEK_SET); 575 /* ROM wants it byteswapped in 32bit chunks */ 576 if (verboseflag) 577 printf("writing records\n"); 578 memcpy(swapped, &bootrec, sizeof(rs6000_boot_record_t)); 579 for (i=0; i < 128; i++) 580 swapped[i] = htonl(swapped[i]); 581 write(rs6000_fd, swapped, sizeof(rs6000_boot_record_t)); 582 memcpy(swapped, &confrec, sizeof(rs6000_config_record_t)); 583 for (i=0; i < 128; i++) 584 swapped[i] = htonl(swapped[i]); 585 write(rs6000_fd, swapped, sizeof(rs6000_config_record_t)); 586 587 free(kern_img); 588 close(kern_fd); 589 close(rs6000_fd); 590 close(elf_fd); 591 592 return 0; 593 } 594 595 static int 596 bebox_write_header(int bebox_fd, int elf_image_len, int kern_img_len) 597 { 598 int hsize = BEBOX_HEADER_SIZE; 599 unsigned long textOffset, dataOffset, ldrOffset; 600 unsigned long entry_vector[3]; 601 struct FileHeader fileHdr; 602 struct SectionHeader textHdr, dataHdr, ldrHdr; 603 struct LoaderHeader lh; 604 605 606 ldrOffset = ULALIGN(sizeof (fileHdr) + sizeof (textHdr) + 607 sizeof (dataHdr) + sizeof (ldrHdr)); 608 dataOffset = ULALIGN(ldrOffset + sizeof (lh)); 609 textOffset = ULALIGN(dataOffset + sizeof (entry_vector) + kern_img_len); 610 611 /* Create the File Header */ 612 memset(&fileHdr, 0, sizeof (fileHdr)); 613 fileHdr.magic = sa_htobe32(PEF_MAGIC); 614 fileHdr.fileTypeID = sa_htobe32(PEF_FILE); 615 fileHdr.archID = sa_htobe32(PEF_PPC); 616 fileHdr.versionNumber = sa_htobe32(1); 617 fileHdr.numSections = sa_htobe16(3); 618 fileHdr.loadableSections = sa_htobe16(2); 619 write(bebox_fd, &fileHdr, sizeof (fileHdr)); 620 621 /* Create the Section Header for TEXT */ 622 memset(&textHdr, 0, sizeof (textHdr)); 623 textHdr.sectionName = sa_htobe32(-1); 624 textHdr.sectionAddress = sa_htobe32(0); 625 textHdr.execSize = sa_htobe32(elf_image_len); 626 textHdr.initSize = sa_htobe32(elf_image_len); 627 textHdr.rawSize = sa_htobe32(elf_image_len); 628 textHdr.fileOffset = sa_htobe32(textOffset); 629 textHdr.regionKind = CodeSection; 630 textHdr.shareKind = ContextShare; 631 textHdr.alignment = 4; /* 16 byte alignment */ 632 write(bebox_fd, &textHdr, sizeof (textHdr)); 633 634 /* Create the Section Header for DATA */ 635 memset(&dataHdr, 0, sizeof (dataHdr)); 636 dataHdr.sectionName = sa_htobe32(-1); 637 dataHdr.sectionAddress = sa_htobe32(0); 638 dataHdr.execSize = sa_htobe32(sizeof (entry_vector) + kern_img_len); 639 dataHdr.initSize = sa_htobe32(sizeof (entry_vector) + kern_img_len); 640 dataHdr.rawSize = sa_htobe32(sizeof (entry_vector) + kern_img_len); 641 dataHdr.fileOffset = sa_htobe32(dataOffset); 642 dataHdr.regionKind = DataSection; 643 dataHdr.shareKind = ContextShare; 644 dataHdr.alignment = 4; /* 16 byte alignment */ 645 write(bebox_fd, &dataHdr, sizeof (dataHdr)); 646 647 /* Create the Section Header for loader stuff */ 648 memset(&ldrHdr, 0, sizeof (ldrHdr)); 649 ldrHdr.sectionName = sa_htobe32(-1); 650 ldrHdr.sectionAddress = sa_htobe32(0); 651 ldrHdr.execSize = sa_htobe32(sizeof (lh)); 652 ldrHdr.initSize = sa_htobe32(sizeof (lh)); 653 ldrHdr.rawSize = sa_htobe32(sizeof (lh)); 654 ldrHdr.fileOffset = sa_htobe32(ldrOffset); 655 ldrHdr.regionKind = LoaderSection; 656 ldrHdr.shareKind = GlobalShare; 657 ldrHdr.alignment = 4; /* 16 byte alignment */ 658 write(bebox_fd, &ldrHdr, sizeof (ldrHdr)); 659 660 /* Create the Loader Header */ 661 memset(&lh, 0, sizeof (lh)); 662 lh.entryPointSection = sa_htobe32(1); /* Data */ 663 lh.entryPointOffset = sa_htobe32(0); 664 lh.initPointSection = sa_htobe32(-1); 665 lh.initPointOffset = sa_htobe32(0); 666 lh.termPointSection = sa_htobe32(-1); 667 lh.termPointOffset = sa_htobe32(0); 668 lseek(bebox_fd, ldrOffset + hsize, SEEK_SET); 669 write(bebox_fd, &lh, sizeof (lh)); 670 671 /* Copy the pseudo-DATA */ 672 memset(entry_vector, 0, sizeof (entry_vector)); 673 entry_vector[0] = sa_htobe32(BEBOX_ENTRY); /* Magic */ 674 lseek(bebox_fd, dataOffset + hsize, SEEK_SET); 675 write(bebox_fd, entry_vector, sizeof (entry_vector)); 676 677 return textOffset; 678 } 679 680 static int 681 bebox_build_image(char *kernel, char *boot, char *rawdev, char *outname, char *repro_timestamp) 682 { 683 unsigned char *elf_img = NULL, *kern_img = NULL, *header_img = NULL; 684 int i, ch, tmp, kgzlen, err, hsize = BEBOX_HEADER_SIZE; 685 int elf_fd, bebox_fd, kern_fd, elf_img_len = 0; 686 off_t lenpos, kstart, kend, toff, endoff, flength; 687 uint32_t swapped[128]; 688 int32_t *offset; 689 gzFile gzf; 690 struct stat kern_stat; 691 struct bebox_image_block *p; 692 struct timeval tp; 693 Elf32_External_Phdr phdr; 694 695 elf_fd = open_file("bootloader", boot, &hdr, &elf_stat); 696 if (inkernflag) { 697 kern_fd = open_file("kernel", kernel, &khdr, &kern_stat); 698 kern_len = kern_stat.st_size + BEBOX_MAGICSIZE + KERNLENSIZE; 699 } else 700 kern_len = BEBOX_MAGICSIZE + KERNLENSIZE; 701 702 for (i = 0; i < ELFGET16(hdr.e_phnum); i++) { 703 lseek(elf_fd, ELFGET32(hdr.e_phoff) + sizeof(phdr) * i, 704 SEEK_SET); 705 if (read(elf_fd, &phdr, sizeof(phdr)) != sizeof(phdr)) 706 errx(3, "Can't read input '%s' phdr : %s", boot, 707 strerror(errno)); 708 709 if ((ELFGET32(phdr.p_type) != PT_LOAD) || 710 !(ELFGET32(phdr.p_flags) & PF_X)) 711 continue; 712 713 fstat(elf_fd, &elf_stat); 714 elf_img_len = ELFGET32(phdr.p_filesz); 715 lseek(elf_fd, ELFGET32(phdr.p_offset), SEEK_SET); 716 717 break; 718 } 719 if ((bebox_fd = open(outname, O_RDWR|O_TRUNC, 0)) < 0) { 720 /* we couldn't open it, it must be new */ 721 bebox_fd = creat(outname, 0644); 722 if (bebox_fd < 0) 723 errx(2, "Can't open output '%s': %s", outname, 724 strerror(errno)); 725 } 726 lseek(bebox_fd, hsize, SEEK_SET); 727 728 if (inkernflag) { 729 /* 730 * write the header with the wrong values to get the offset 731 * right 732 */ 733 bebox_write_header(bebox_fd, elf_img_len, kern_stat.st_size); 734 735 /* Copy kernel */ 736 kern_img = malloc(kern_stat.st_size); 737 738 if (kern_img == NULL) 739 errx(3, "Can't malloc: %s", strerror(errno)); 740 741 /* we need to jump back after having read the headers */ 742 lseek(kern_fd, 0, SEEK_SET); 743 if (read(kern_fd, (void *)kern_img, kern_stat.st_size) != 744 kern_stat.st_size) 745 errx(3, "Can't read kernel '%s' : %s", 746 kernel, strerror(errno)); 747 748 gzf = gzdopen(dup(bebox_fd), "a"); 749 if (gzf == NULL) 750 errx(3, "Can't init compression: %s", strerror(errno)); 751 if (gzsetparams(gzf, Z_BEST_COMPRESSION, Z_DEFAULT_STRATEGY) != 752 Z_OK) 753 errx(3, "%s", gzerror(gzf, &err)); 754 } else 755 bebox_write_header(bebox_fd, elf_img_len, 0); 756 757 /* write a magic number and size before the kernel */ 758 write(bebox_fd, (void *)bebox_magic, BEBOX_MAGICSIZE); 759 lenpos = lseek(bebox_fd, 0, SEEK_CUR); 760 tmp = sa_htobe32(0); 761 write(bebox_fd, (void *)&tmp, KERNLENSIZE); 762 763 if (inkernflag) { 764 /* write in the compressed kernel */ 765 kstart = lseek(bebox_fd, 0, SEEK_CUR); 766 kgzlen = gzwrite(gzf, kern_img, kern_stat.st_size); 767 gzclose(gzf); 768 kend = lseek(bebox_fd, 0, SEEK_CUR); 769 free(kern_img); 770 } else { 771 kstart = kend = lseek(bebox_fd, 0, SEEK_CUR); 772 kgzlen = 0; 773 } 774 775 /* jump back to the length position now that we know the length */ 776 lseek(bebox_fd, lenpos, SEEK_SET); 777 kgzlen = kend - kstart; 778 tmp = sa_htobe32(kgzlen); 779 write(bebox_fd, (void *)&tmp, KERNLENSIZE); 780 781 /* now rewrite the header correctly */ 782 lseek(bebox_fd, hsize, SEEK_SET); 783 tmp = kgzlen + BEBOX_MAGICSIZE + KERNLENSIZE; 784 toff = bebox_write_header(bebox_fd, elf_img_len, tmp); 785 786 /* Copy boot image */ 787 elf_img = malloc(elf_img_len); 788 if (!elf_img) 789 errx(3, "Can't malloc: %s", strerror(errno)); 790 if (read(elf_fd, elf_img, elf_img_len) != elf_img_len) 791 errx(3, "Can't read file '%s' : %s", boot, strerror(errno)); 792 lseek(bebox_fd, toff + hsize, SEEK_SET); 793 write(bebox_fd, elf_img, elf_img_len); 794 free(elf_img); 795 796 if (inkernflag) 797 close(kern_fd); 798 close(elf_fd); 799 800 /* Now go back and write in the block header */ 801 endoff = lseek(bebox_fd, 0, SEEK_END); 802 lseek(bebox_fd, 0, SEEK_SET); 803 header_img = malloc(BEBOX_HEADER_SIZE); 804 if (!header_img) 805 errx(3, "Can't malloc: %s", strerror(errno)); 806 memset(header_img, 0, BEBOX_HEADER_SIZE); 807 808 /* copy the boot image into the buffer */ 809 for (p = bebox_image_block; p->offset != -1; p++) 810 memcpy(header_img + p->offset, p->data, p->size); 811 812 /* fill used block bitmap */ 813 memset(header_img + BEBOX_FILE_BLOCK_MAP_START, 0xff, 814 BEBOX_FILE_BLOCK_MAP_END - BEBOX_FILE_BLOCK_MAP_START); 815 816 /* fix the file size in the header */ 817 tmp = endoff - BEBOX_HEADER_SIZE; 818 *(int32_t *)(header_img + BEBOX_FILE_SIZE_OFFSET) = 819 (int32_t)sa_htobe32(tmp); 820 *(int32_t *)(header_img + BEBOX_FILE_SIZE_ALIGN_OFFSET) = 821 (int32_t)sa_htobe32(roundup(tmp, BEBOX_FILE_BLOCK_SIZE)); 822 823 if (repro_timestamp) { 824 tp.tv_sec = (time_t)atoll(repro_timestamp); 825 tp.tv_usec = 0; 826 } else 827 gettimeofday(&tp, 0); 828 for (offset = bebox_mtime_offset; *offset != -1; offset++) 829 *(int32_t *)(header_img + *offset) = 830 (int32_t)sa_htobe32(tp.tv_sec); 831 832 write(bebox_fd, header_img, BEBOX_HEADER_SIZE); 833 834 /* now pad the end */ 835 flength = roundup(endoff, BEBOX_BLOCK_SIZE); 836 /* refill the header_img with zeros */ 837 memset(header_img, 0, BEBOX_BLOCK_SIZE * 2); 838 lseek(bebox_fd, 0, SEEK_END); 839 write(bebox_fd, header_img, flength - endoff); 840 841 close(bebox_fd); 842 free(header_img); 843 844 return 0; 845 } 846 847 int 848 main(int argc, char **argv) 849 { 850 int ch, lfloppyflag=0; 851 char *kernel = NULL, *boot = NULL, *rawdev = NULL, *outname = NULL; 852 char *march = NULL; 853 char *repro_timestamp = NULL; 854 #ifdef USE_SYSCTL 855 char machine[SYS_NMLN]; 856 int mib[2] = { CTL_HW, HW_MACHINE }; 857 #endif 858 859 setprogname(argv[0]); 860 kern_len = 0; 861 862 while ((ch = getopt(argc, argv, "b:Ik:lm:r:st:v")) != -1) 863 switch (ch) { 864 case 'b': 865 boot = optarg; 866 break; 867 case 'I': 868 inkernflag = 0; 869 break; 870 case 'k': 871 kernel = optarg; 872 inkernflag = 1; 873 break; 874 case 'l': 875 lfloppyflag = 1; 876 break; 877 case 'm': 878 march = optarg; 879 break; 880 case 'r': 881 rawdev = optarg; 882 break; 883 case 's': 884 saloneflag = 1; 885 break; 886 case 't': 887 repro_timestamp = optarg; 888 break; 889 case 'v': 890 verboseflag = 1; 891 break; 892 case '?': 893 default: 894 usage(0); 895 /* NOTREACHED */ 896 } 897 argc -= optind; 898 argv += optind; 899 900 if (argc < 1) 901 usage(0); 902 903 if (kernel == NULL && inkernflag) 904 kernel = "/netbsd"; 905 906 if (boot == NULL) 907 boot = "/usr/mdec/boot"; 908 909 if (march != NULL && strcmp(march, "") == 0) 910 march = NULL; 911 if (march == NULL) { 912 int i; 913 #ifdef USE_SYSCTL 914 size_t len = sizeof(machine); 915 916 if (sysctl(mib, sizeof (mib) / sizeof (mib[0]), machine, 917 &len, NULL, 0) != -1) { 918 for (i=0; sup_plats[i] != NULL; i++) { 919 if (strcmp(sup_plats[i], machine) == 0) { 920 march = strdup(sup_plats[i]); 921 break; 922 } 923 } 924 } 925 if (march == NULL) 926 #endif 927 usage(1); 928 } 929 930 outname = argv[0]; 931 932 if (strcmp(march, "prep") == 0) 933 return prep_build_image(kernel, boot, rawdev, outname); 934 if (strcmp(march, "rs6000") == 0) 935 return rs6000_build_image(kernel, boot, rawdev, outname); 936 if (strcmp(march, "bebox") == 0) 937 return bebox_build_image(kernel, boot, rawdev, outname, 938 repro_timestamp); 939 940 usage(1); 941 return 0; 942 } 943
Indexes created Mon Sep 29 03:10:08 GMT 2025