tools/mkimage.c

   1 /*
   2  * (C) Copyright 2008 Semihalf
   3  *
   4  * (C) Copyright 2000-2009
   5  * DENX Software Engineering
   6  * Wolfgang Denk, wd@denx.de
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include "mkimage.h"
  12 #include <image.h>
  13 #include <version.h>
  14
  15 static void copy_file(int, const char *, int);
  16
  17 /* parameters initialized by core will be used by the image type code */
  18 static struct image_tool_params params = {
  19         .os = IH_OS_LINUX,
  20         .arch = IH_ARCH_PPC,
  21         .type = IH_TYPE_KERNEL,
  22         .comp = IH_COMP_GZIP,
  23         .dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
  24         .imagename = "",
  25         .imagename2 = "",
  26 };
  27
  28 static enum ih_category cur_category;
  29
  30 static int h_compare_category_name(const void *vtype1, const void *vtype2)
  31 {
  32         const int *type1 = vtype1;
  33         const int *type2 = vtype2;
  34         const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
  35         const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
  36
  37         return strcmp(name1, name2);
  38 }
  39
  40 static int show_valid_options(enum ih_category category)
  41 {
  42         int *order;
  43         int count;
  44         int item;
  45         int i;
  46
  47         count = genimg_get_cat_count(category);
  48         order = calloc(count, sizeof(*order));
  49         if (!order)
  50                 return -ENOMEM;
  51
  52         /* Sort the names in order of short name for easier reading */
  53         for (item = 0; item < count; item++)
  54                 order[item] = item;
  55         cur_category = category;
  56         qsort(order, count, sizeof(int), h_compare_category_name);
  57
  58         fprintf(stderr, "\nInvalid %s, supported are:\n",
  59                 genimg_get_cat_desc(category));
  60         for (i = 0; i < count; i++) {
  61                 item = order[i];
  62                 fprintf(stderr, "\t%-15s  %s\n",
  63                         genimg_get_cat_short_name(category, item),
  64                         genimg_get_cat_name(category, item));
  65         }
  66         fprintf(stderr, "\n");
  67
  68         return 0;
  69 }
  70
  71 static void usage(const char *msg)
  72 {
  73         fprintf(stderr, "Error: %s\n", msg);
  74         fprintf(stderr, "Usage: %s -l image\n"
  75                          "          -l ==> list image header information\n",
  76                 params.cmdname);
  77         fprintf(stderr,
  78                 "       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
  79                 "          -A ==> set architecture to 'arch'\n"
  80                 "          -O ==> set operating system to 'os'\n"
  81                 "          -T ==> set image type to 'type'\n"
  82                 "          -C ==> set compression type 'comp'\n"
  83                 "          -a ==> set load address to 'addr' (hex)\n"
  84                 "          -e ==> set entry point to 'ep' (hex)\n"
  85                 "          -n ==> set image name to 'name'\n"
  86                 "          -d ==> use image data from 'datafile'\n"
  87                 "          -x ==> set XIP (execute in place)\n",
  88                 params.cmdname);
  89         fprintf(stderr,
  90                 "       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] fit-image\n"
  91                 "           <dtb> file is used with -f auto, it may occour multiple times.\n",
  92                 params.cmdname);
  93         fprintf(stderr,
  94                 "          -D => set all options for device tree compiler\n"
  95                 "          -f => input filename for FIT source\n");
  96 #ifdef CONFIG_FIT_SIGNATURE
  97         fprintf(stderr,
  98                 "Signing / verified boot options: [-E] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r]\n"
  99                 "          -E => place data outside of the FIT structure\n"
 100                 "          -k => set directory containing private keys\n"
 101                 "          -K => write public keys to this .dtb file\n"
 102                 "          -c => add comment in signature node\n"
 103                 "          -F => re-sign existing FIT image\n"
 104                 "          -p => place external data at a static position\n"
 105                 "          -r => mark keys used as 'required' in dtb\n");
 106 #else
 107         fprintf(stderr,
 108                 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
 109 #endif
 110         fprintf(stderr, "       %s -V ==> print version information and exit\n",
 111                 params.cmdname);
 112         fprintf(stderr, "Use -T to see a list of available image types\n");
 113
 114         exit(EXIT_FAILURE);
 115 }
 116
 117 static int add_content(int type, const char *fname)
 118 {
 119         struct content_info *cont;
 120
 121         cont = calloc(1, sizeof(*cont));
 122         if (!cont)
 123                 return -1;
 124         cont->type = type;
 125         cont->fname = fname;
 126         if (params.content_tail)
 127                 params.content_tail->next = cont;
 128         else
 129                 params.content_head = cont;
 130         params.content_tail = cont;
 131
 132         return 0;
 133 }
 134
 135 static void process_args(int argc, char **argv)
 136 {
 137         char *ptr;
 138         int type = IH_TYPE_INVALID;
 139         char *datafile = NULL;
 140         int opt;
 141
 142         while ((opt = getopt(argc, argv,
 143                              "a:A:b:cC:d:D:e:Ef:Fk:K:ln:p:O:rR:qsT:vVx")) != -1) {
 144                 switch (opt) {
 145                 case 'a':
 146                         params.addr = strtoull(optarg, &ptr, 16);
 147                         if (*ptr) {
 148                                 fprintf(stderr, "%s: invalid load address %s\n",
 149                                         params.cmdname, optarg);
 150                                 exit(EXIT_FAILURE);
 151                         }
 152                         break;
 153                 case 'A':
 154                         params.arch = genimg_get_arch_id(optarg);
 155                         if (params.arch < 0)
 156                                 usage("Invalid architecture");
 157                         break;
 158                 case 'b':
 159                         if (add_content(IH_TYPE_FLATDT, optarg)) {
 160                                 fprintf(stderr,
 161                                         "%s: Out of memory adding content '%s'",
 162                                         params.cmdname, optarg);
 163                                 exit(EXIT_FAILURE);
 164                         }
 165                         break;
 166                 case 'c':
 167                         params.comment = optarg;
 168                         break;
 169                 case 'C':
 170                         params.comp = genimg_get_comp_id(optarg);
 171                         if (params.comp < 0)
 172                                 usage("Invalid compression type");
 173                         break;
 174                 case 'd':
 175                         params.datafile = optarg;
 176                         params.dflag = 1;
 177                         break;
 178                 case 'D':
 179                         params.dtc = optarg;
 180                         break;
 181                 case 'e':
 182                         params.ep = strtoull(optarg, &ptr, 16);
 183                         if (*ptr) {
 184                                 fprintf(stderr, "%s: invalid entry point %s\n",
 185                                         params.cmdname, optarg);
 186                                 exit(EXIT_FAILURE);
 187                         }
 188                         params.eflag = 1;
 189                         break;
 190                 case 'E':
 191                         params.external_data = true;
 192                         break;
 193                 case 'f':
 194                         datafile = optarg;
 195                         params.auto_its = !strcmp(datafile, "auto");
 196                         /* no break */
 197                 case 'F':
 198                         /*
 199                          * The flattened image tree (FIT) format
 200                          * requires a flattened device tree image type
 201                          */
 202                         params.type = IH_TYPE_FLATDT;
 203                         params.fflag = 1;
 204                         break;
 205                 case 'k':
 206                         params.keydir = optarg;
 207                         break;
 208                 case 'K':
 209                         params.keydest = optarg;
 210                         break;
 211                 case 'l':
 212                         params.lflag = 1;
 213                         break;
 214                 case 'n':
 215                         params.imagename = optarg;
 216                         break;
 217                 case 'O':
 218                         params.os = genimg_get_os_id(optarg);
 219                         if (params.os < 0)
 220                                 usage("Invalid operating system");
 221                         break;
 222                 case 'p':
 223                         params.external_offset = strtoull(optarg, &ptr, 16);
 224                         if (*ptr) {
 225                                 fprintf(stderr, "%s: invalid offset size %s\n",
 226                                         params.cmdname, optarg);
 227                                 exit(EXIT_FAILURE);
 228                         }
 229                 case 'q':
 230                         params.quiet = 1;
 231                         break;
 232                 case 'r':
 233                         params.require_keys = 1;
 234                         break;
 235                 case 'R':
 236                         /*
 237                          * This entry is for the second configuration
 238                          * file, if only one is not enough.
 239                          */
 240                         params.imagename2 = optarg;
 241                         break;
 242                 case 's':
 243                         params.skipcpy = 1;
 244                         break;
 245                 case 'T':
 246                         type = genimg_get_type_id(optarg);
 247                         if (type < 0) {
 248                                 show_valid_options(IH_TYPE);
 249                                 usage("Invalid image type");
 250                         }
 251                         break;
 252                 case 'v':
 253                         params.vflag++;
 254                         break;
 255                 case 'V':
 256                         printf("mkimage version %s\n", PLAIN_VERSION);
 257                         exit(EXIT_SUCCESS);
 258                 case 'x':
 259                         params.xflag++;
 260                         break;
 261                 default:
 262                         usage("Invalid option");
 263                 }
 264         }
 265
 266         /* The last parameter is expected to be the imagefile */
 267         if (optind < argc)
 268                 params.imagefile = argv[optind];
 269
 270         /*
 271          * For auto-generated FIT images we need to know the image type to put
 272          * in the FIT, which is separate from the file's image type (which
 273          * will always be IH_TYPE_FLATDT in this case).
 274          */
 275         if (params.type == IH_TYPE_FLATDT) {
 276                 params.fit_image_type = type ? type : IH_TYPE_KERNEL;
 277                 /* For auto_its, datafile is always 'auto' */
 278                 if (!params.auto_its)
 279                         params.datafile = datafile;
 280                 else if (!params.datafile)
 281                         usage("Missing data file for auto-FIT (use -d)");
 282         } else if (type != IH_TYPE_INVALID) {
 283                 params.type = type;
 284         }
 285
 286         if (!params.imagefile)
 287                 usage("Missing output filename");
 288 }
 289
 290 int main(int argc, char **argv)
 291 {
 292         int ifd = -1;
 293         struct stat sbuf;
 294         char *ptr;
 295         int retval = 0;
 296         struct image_type_params *tparams = NULL;
 297         int pad_len = 0;
 298         int dfd;
 299
 300         params.cmdname = *argv;
 301         params.addr = 0;
 302         params.ep = 0;
 303
 304         process_args(argc, argv);
 305
 306         /* set tparams as per input type_id */
 307         tparams = imagetool_get_type(params.type);
 308         if (tparams == NULL) {
 309                 fprintf (stderr, "%s: unsupported type %s\n",
 310                         params.cmdname, genimg_get_type_name(params.type));
 311                 exit (EXIT_FAILURE);
 312         }
 313
 314         /*
 315          * check the passed arguments parameters meets the requirements
 316          * as per image type to be generated/listed
 317          */
 318         if (tparams->check_params)
 319                 if (tparams->check_params (&params))
 320                         usage("Bad parameters for image type");
 321
 322         if (!params.eflag) {
 323                 params.ep = params.addr;
 324                 /* If XIP, entry point must be after the U-Boot header */
 325                 if (params.xflag)
 326                         params.ep += tparams->header_size;
 327         }
 328
 329         if (params.fflag){
 330                 if (tparams->fflag_handle)
 331                         /*
 332                          * in some cases, some additional processing needs
 333                          * to be done if fflag is defined
 334                          *
 335                          * For ex. fit_handle_file for Fit file support
 336                          */
 337                         retval = tparams->fflag_handle(&params);
 338
 339                 if (retval != EXIT_SUCCESS)
 340                         exit (retval);
 341         }
 342
 343         if (params.lflag || params.fflag) {
 344                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 345         } else {
 346                 ifd = open (params.imagefile,
 347                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 348         }
 349
 350         if (ifd < 0) {
 351                 fprintf (stderr, "%s: Can't open %s: %s\n",
 352                         params.cmdname, params.imagefile,
 353                         strerror(errno));
 354                 exit (EXIT_FAILURE);
 355         }
 356
 357         if (params.lflag || params.fflag) {
 358                 /*
 359                  * list header information of existing image
 360                  */
 361                 if (fstat(ifd, &sbuf) < 0) {
 362                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 363                                 params.cmdname, params.imagefile,
 364                                 strerror(errno));
 365                         exit (EXIT_FAILURE);
 366                 }
 367
 368                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 369                         fprintf (stderr,
 370                                 "%s: Bad size: \"%s\" is not valid image\n",
 371                                 params.cmdname, params.imagefile);
 372                         exit (EXIT_FAILURE);
 373                 }
 374
 375                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 376                 if (ptr == MAP_FAILED) {
 377                         fprintf (stderr, "%s: Can't read %s: %s\n",
 378                                 params.cmdname, params.imagefile,
 379                                 strerror(errno));
 380                         exit (EXIT_FAILURE);
 381                 }
 382
 383                 /*
 384                  * scan through mkimage registry for all supported image types
 385                  * and verify the input image file header for match
 386                  * Print the image information for matched image type
 387                  * Returns the error code if not matched
 388                  */
 389                 retval = imagetool_verify_print_header(ptr, &sbuf,
 390                                 tparams, &params);
 391
 392                 (void) munmap((void *)ptr, sbuf.st_size);
 393                 (void) close (ifd);
 394
 395                 exit (retval);
 396         }
 397
 398         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 399                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 400                 if (dfd < 0) {
 401                         fprintf(stderr, "%s: Can't open %s: %s\n",
 402                                 params.cmdname, params.datafile,
 403                                 strerror(errno));
 404                         exit(EXIT_FAILURE);
 405                 }
 406
 407                 if (fstat(dfd, &sbuf) < 0) {
 408                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 409                                 params.cmdname, params.datafile,
 410                                 strerror(errno));
 411                         exit(EXIT_FAILURE);
 412                 }
 413
 414                 params.file_size = sbuf.st_size + tparams->header_size;
 415                 close(dfd);
 416         }
 417
 418         /*
 419          * In case there an header with a variable
 420          * length will be added, the corresponding
 421          * function is called. This is responsible to
 422          * allocate memory for the header itself.
 423          */
 424         if (tparams->vrec_header)
 425                 pad_len = tparams->vrec_header(&params, tparams);
 426         else
 427                 memset(tparams->hdr, 0, tparams->header_size);
 428
 429         if (write(ifd, tparams->hdr, tparams->header_size)
 430                                         != tparams->header_size) {
 431                 fprintf (stderr, "%s: Write error on %s: %s\n",
 432                         params.cmdname, params.imagefile, strerror(errno));
 433                 exit (EXIT_FAILURE);
 434         }
 435
 436         if (!params.skipcpy) {
 437                 if (params.type == IH_TYPE_MULTI ||
 438                     params.type == IH_TYPE_SCRIPT) {
 439                         char *file = params.datafile;
 440                         uint32_t size;
 441
 442                         for (;;) {
 443                                 char *sep = NULL;
 444
 445                                 if (file) {
 446                                         if ((sep = strchr(file, ':')) != NULL) {
 447                                                 *sep = '\0';
 448                                         }
 449
 450                                         if (stat (file, &sbuf) < 0) {
 451                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 452                                                          params.cmdname, file, strerror(errno));
 453                                                 exit (EXIT_FAILURE);
 454                                         }
 455                                         size = cpu_to_uimage (sbuf.st_size);
 456                                 } else {
 457                                         size = 0;
 458                                 }
 459
 460                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 461                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 462                                                  params.cmdname, params.imagefile,
 463                                                  strerror(errno));
 464                                         exit (EXIT_FAILURE);
 465                                 }
 466
 467                                 if (!file) {
 468                                         break;
 469                                 }
 470
 471                                 if (sep) {
 472                                         *sep = ':';
 473                                         file = sep + 1;
 474                                 } else {
 475                                         file = NULL;
 476                                 }
 477                         }
 478
 479                         file = params.datafile;
 480
 481                         for (;;) {
 482                                 char *sep = strchr(file, ':');
 483                                 if (sep) {
 484                                         *sep = '\0';
 485                                         copy_file (ifd, file, 1);
 486                                         *sep++ = ':';
 487                                         file = sep;
 488                                 } else {
 489                                         copy_file (ifd, file, 0);
 490                                         break;
 491                                 }
 492                         }
 493                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 494                         /* PBL has special Image format, implements its' own */
 495                         pbl_load_uboot(ifd, &params);
 496                 } else {
 497                         copy_file(ifd, params.datafile, pad_len);
 498                 }
 499         }
 500
 501         /* We're a bit of paranoid */
 502 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 503    !defined(__sun__) && \
 504    !defined(__FreeBSD__) && \
 505    !defined(__OpenBSD__) && \
 506    !defined(__APPLE__)
 507         (void) fdatasync (ifd);
 508 #else
 509         (void) fsync (ifd);
 510 #endif
 511
 512         if (fstat(ifd, &sbuf) < 0) {
 513                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 514                         params.cmdname, params.imagefile, strerror(errno));
 515                 exit (EXIT_FAILURE);
 516         }
 517         params.file_size = sbuf.st_size;
 518
 519         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 520         if (ptr == MAP_FAILED) {
 521                 fprintf (stderr, "%s: Can't map %s: %s\n",
 522                         params.cmdname, params.imagefile, strerror(errno));
 523                 exit (EXIT_FAILURE);
 524         }
 525
 526         /* Setup the image header as per input image type*/
 527         if (tparams->set_header)
 528                 tparams->set_header (ptr, &sbuf, ifd, &params);
 529         else {
 530                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 531                         params.cmdname, tparams->name, strerror(errno));
 532                 exit (EXIT_FAILURE);
 533         }
 534
 535         /* Print the image information by processing image header */
 536         if (tparams->print_header)
 537                 tparams->print_header (ptr);
 538         else {
 539                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
 540                         params.cmdname, tparams->name, strerror(errno));
 541                 exit (EXIT_FAILURE);
 542         }
 543
 544         (void) munmap((void *)ptr, sbuf.st_size);
 545
 546         /* We're a bit of paranoid */
 547 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 548    !defined(__sun__) && \
 549    !defined(__FreeBSD__) && \
 550    !defined(__OpenBSD__) && \
 551    !defined(__APPLE__)
 552         (void) fdatasync (ifd);
 553 #else
 554         (void) fsync (ifd);
 555 #endif
 556
 557         if (close(ifd)) {
 558                 fprintf (stderr, "%s: Write error on %s: %s\n",
 559                         params.cmdname, params.imagefile, strerror(errno));
 560                 exit (EXIT_FAILURE);
 561         }
 562
 563         exit (EXIT_SUCCESS);
 564 }
 565
 566 static void
 567 copy_file (int ifd, const char *datafile, int pad)
 568 {
 569         int dfd;
 570         struct stat sbuf;
 571         unsigned char *ptr;
 572         int tail;
 573         int zero = 0;
 574         uint8_t zeros[4096];
 575         int offset = 0;
 576         int size;
 577         struct image_type_params *tparams = imagetool_get_type(params.type);
 578
 579         memset(zeros, 0, sizeof(zeros));
 580
 581         if (params.vflag) {
 582                 fprintf (stderr, "Adding Image %s\n", datafile);
 583         }
 584
 585         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 586                 fprintf (stderr, "%s: Can't open %s: %s\n",
 587                         params.cmdname, datafile, strerror(errno));
 588                 exit (EXIT_FAILURE);
 589         }
 590
 591         if (fstat(dfd, &sbuf) < 0) {
 592                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 593                         params.cmdname, datafile, strerror(errno));
 594                 exit (EXIT_FAILURE);
 595         }
 596
 597         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 598         if (ptr == MAP_FAILED) {
 599                 fprintf (stderr, "%s: Can't read %s: %s\n",
 600                         params.cmdname, datafile, strerror(errno));
 601                 exit (EXIT_FAILURE);
 602         }
 603
 604         if (params.xflag) {
 605                 unsigned char *p = NULL;
 606                 /*
 607                  * XIP: do not append the image_header_t at the
 608                  * beginning of the file, but consume the space
 609                  * reserved for it.
 610                  */
 611
 612                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 613                         fprintf (stderr,
 614                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 615                                 params.cmdname, datafile);
 616                         exit (EXIT_FAILURE);
 617                 }
 618
 619                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 620                         if ( *p != 0xff ) {
 621                                 fprintf (stderr,
 622                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 623                                         params.cmdname, datafile);
 624                                 exit (EXIT_FAILURE);
 625                         }
 626                 }
 627
 628                 offset = tparams->header_size;
 629         }
 630
 631         size = sbuf.st_size - offset;
 632         if (write(ifd, ptr + offset, size) != size) {
 633                 fprintf (stderr, "%s: Write error on %s: %s\n",
 634                         params.cmdname, params.imagefile, strerror(errno));
 635                 exit (EXIT_FAILURE);
 636         }
 637
 638         tail = size % 4;
 639         if ((pad == 1) && (tail != 0)) {
 640
 641                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 642                         fprintf (stderr, "%s: Write error on %s: %s\n",
 643                                 params.cmdname, params.imagefile,
 644                                 strerror(errno));
 645                         exit (EXIT_FAILURE);
 646                 }
 647         } else if (pad > 1) {
 648                 while (pad > 0) {
 649                         int todo = sizeof(zeros);
 650
 651                         if (todo > pad)
 652                                 todo = pad;
 653                         if (write(ifd, (char *)&zeros, todo) != todo) {
 654                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 655                                         params.cmdname, params.imagefile,
 656                                         strerror(errno));
 657                                 exit(EXIT_FAILURE);
 658                         }
 659                         pad -= todo;
 660                 }
 661         }
 662
 663         (void) munmap((void *)ptr, sbuf.st_size);
 664         (void) close (dfd);
 665 }