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                                 show_valid_options(IH_ARCH);
 157                                 usage("Invalid architecture");
 158                         }
 159                         break;
 160                 case 'b':
 161                         if (add_content(IH_TYPE_FLATDT, optarg)) {
 162                                 fprintf(stderr,
 163                                         "%s: Out of memory adding content '%s'",
 164                                         params.cmdname, optarg);
 165                                 exit(EXIT_FAILURE);
 166                         }
 167                         break;
 168                 case 'c':
 169                         params.comment = optarg;
 170                         break;
 171                 case 'C':
 172                         params.comp = genimg_get_comp_id(optarg);
 173                         if (params.comp < 0) {
 174                                 show_valid_options(IH_COMP);
 175                                 usage("Invalid compression type");
 176                         }
 177                         break;
 178                 case 'd':
 179                         params.datafile = optarg;
 180                         params.dflag = 1;
 181                         break;
 182                 case 'D':
 183                         params.dtc = optarg;
 184                         break;
 185                 case 'e':
 186                         params.ep = strtoull(optarg, &ptr, 16);
 187                         if (*ptr) {
 188                                 fprintf(stderr, "%s: invalid entry point %s\n",
 189                                         params.cmdname, optarg);
 190                                 exit(EXIT_FAILURE);
 191                         }
 192                         params.eflag = 1;
 193                         break;
 194                 case 'E':
 195                         params.external_data = true;
 196                         break;
 197                 case 'f':
 198                         datafile = optarg;
 199                         params.auto_its = !strcmp(datafile, "auto");
 200                         /* no break */
 201                 case 'F':
 202                         /*
 203                          * The flattened image tree (FIT) format
 204                          * requires a flattened device tree image type
 205                          */
 206                         params.type = IH_TYPE_FLATDT;
 207                         params.fflag = 1;
 208                         break;
 209                 case 'k':
 210                         params.keydir = optarg;
 211                         break;
 212                 case 'K':
 213                         params.keydest = optarg;
 214                         break;
 215                 case 'l':
 216                         params.lflag = 1;
 217                         break;
 218                 case 'n':
 219                         params.imagename = optarg;
 220                         break;
 221                 case 'O':
 222                         params.os = genimg_get_os_id(optarg);
 223                         if (params.os < 0) {
 224                                 show_valid_options(IH_OS);
 225                                 usage("Invalid operating system");
 226                         }
 227                         break;
 228                 case 'p':
 229                         params.external_offset = strtoull(optarg, &ptr, 16);
 230                         if (*ptr) {
 231                                 fprintf(stderr, "%s: invalid offset size %s\n",
 232                                         params.cmdname, optarg);
 233                                 exit(EXIT_FAILURE);
 234                         }
 235                 case 'q':
 236                         params.quiet = 1;
 237                         break;
 238                 case 'r':
 239                         params.require_keys = 1;
 240                         break;
 241                 case 'R':
 242                         /*
 243                          * This entry is for the second configuration
 244                          * file, if only one is not enough.
 245                          */
 246                         params.imagename2 = optarg;
 247                         break;
 248                 case 's':
 249                         params.skipcpy = 1;
 250                         break;
 251                 case 'T':
 252                         type = genimg_get_type_id(optarg);
 253                         if (type < 0) {
 254                                 show_valid_options(IH_TYPE);
 255                                 usage("Invalid image type");
 256                         }
 257                         break;
 258                 case 'v':
 259                         params.vflag++;
 260                         break;
 261                 case 'V':
 262                         printf("mkimage version %s\n", PLAIN_VERSION);
 263                         exit(EXIT_SUCCESS);
 264                 case 'x':
 265                         params.xflag++;
 266                         break;
 267                 default:
 268                         usage("Invalid option");
 269                 }
 270         }
 271
 272         /* The last parameter is expected to be the imagefile */
 273         if (optind < argc)
 274                 params.imagefile = argv[optind];
 275
 276         /*
 277          * For auto-generated FIT images we need to know the image type to put
 278          * in the FIT, which is separate from the file's image type (which
 279          * will always be IH_TYPE_FLATDT in this case).
 280          */
 281         if (params.type == IH_TYPE_FLATDT) {
 282                 params.fit_image_type = type ? type : IH_TYPE_KERNEL;
 283                 /* For auto_its, datafile is always 'auto' */
 284                 if (!params.auto_its)
 285                         params.datafile = datafile;
 286                 else if (!params.datafile)
 287                         usage("Missing data file for auto-FIT (use -d)");
 288         } else if (type != IH_TYPE_INVALID) {
 289                 params.type = type;
 290         }
 291
 292         if (!params.imagefile)
 293                 usage("Missing output filename");
 294 }
 295
 296 int main(int argc, char **argv)
 297 {
 298         int ifd = -1;
 299         struct stat sbuf;
 300         char *ptr;
 301         int retval = 0;
 302         struct image_type_params *tparams = NULL;
 303         int pad_len = 0;
 304         int dfd;
 305
 306         params.cmdname = *argv;
 307         params.addr = 0;
 308         params.ep = 0;
 309
 310         process_args(argc, argv);
 311
 312         /* set tparams as per input type_id */
 313         tparams = imagetool_get_type(params.type);
 314         if (tparams == NULL) {
 315                 fprintf (stderr, "%s: unsupported type %s\n",
 316                         params.cmdname, genimg_get_type_name(params.type));
 317                 exit (EXIT_FAILURE);
 318         }
 319
 320         /*
 321          * check the passed arguments parameters meets the requirements
 322          * as per image type to be generated/listed
 323          */
 324         if (tparams->check_params)
 325                 if (tparams->check_params (&params))
 326                         usage("Bad parameters for image type");
 327
 328         if (!params.eflag) {
 329                 params.ep = params.addr;
 330                 /* If XIP, entry point must be after the U-Boot header */
 331                 if (params.xflag)
 332                         params.ep += tparams->header_size;
 333         }
 334
 335         if (params.fflag){
 336                 if (tparams->fflag_handle)
 337                         /*
 338                          * in some cases, some additional processing needs
 339                          * to be done if fflag is defined
 340                          *
 341                          * For ex. fit_handle_file for Fit file support
 342                          */
 343                         retval = tparams->fflag_handle(&params);
 344
 345                 if (retval != EXIT_SUCCESS)
 346                         exit (retval);
 347         }
 348
 349         if (params.lflag || params.fflag) {
 350                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 351         } else {
 352                 ifd = open (params.imagefile,
 353                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 354         }
 355
 356         if (ifd < 0) {
 357                 fprintf (stderr, "%s: Can't open %s: %s\n",
 358                         params.cmdname, params.imagefile,
 359                         strerror(errno));
 360                 exit (EXIT_FAILURE);
 361         }
 362
 363         if (params.lflag || params.fflag) {
 364                 /*
 365                  * list header information of existing image
 366                  */
 367                 if (fstat(ifd, &sbuf) < 0) {
 368                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 369                                 params.cmdname, params.imagefile,
 370                                 strerror(errno));
 371                         exit (EXIT_FAILURE);
 372                 }
 373
 374                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 375                         fprintf (stderr,
 376                                 "%s: Bad size: \"%s\" is not valid image\n",
 377                                 params.cmdname, params.imagefile);
 378                         exit (EXIT_FAILURE);
 379                 }
 380
 381                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 382                 if (ptr == MAP_FAILED) {
 383                         fprintf (stderr, "%s: Can't read %s: %s\n",
 384                                 params.cmdname, params.imagefile,
 385                                 strerror(errno));
 386                         exit (EXIT_FAILURE);
 387                 }
 388
 389                 /*
 390                  * scan through mkimage registry for all supported image types
 391                  * and verify the input image file header for match
 392                  * Print the image information for matched image type
 393                  * Returns the error code if not matched
 394                  */
 395                 retval = imagetool_verify_print_header(ptr, &sbuf,
 396                                 tparams, &params);
 397
 398                 (void) munmap((void *)ptr, sbuf.st_size);
 399                 (void) close (ifd);
 400
 401                 exit (retval);
 402         }
 403
 404         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 405                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 406                 if (dfd < 0) {
 407                         fprintf(stderr, "%s: Can't open %s: %s\n",
 408                                 params.cmdname, params.datafile,
 409                                 strerror(errno));
 410                         exit(EXIT_FAILURE);
 411                 }
 412
 413                 if (fstat(dfd, &sbuf) < 0) {
 414                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 415                                 params.cmdname, params.datafile,
 416                                 strerror(errno));
 417                         exit(EXIT_FAILURE);
 418                 }
 419
 420                 params.file_size = sbuf.st_size + tparams->header_size;
 421                 close(dfd);
 422         }
 423
 424         /*
 425          * In case there an header with a variable
 426          * length will be added, the corresponding
 427          * function is called. This is responsible to
 428          * allocate memory for the header itself.
 429          */
 430         if (tparams->vrec_header)
 431                 pad_len = tparams->vrec_header(&params, tparams);
 432         else
 433                 memset(tparams->hdr, 0, tparams->header_size);
 434
 435         if (write(ifd, tparams->hdr, tparams->header_size)
 436                                         != tparams->header_size) {
 437                 fprintf (stderr, "%s: Write error on %s: %s\n",
 438                         params.cmdname, params.imagefile, strerror(errno));
 439                 exit (EXIT_FAILURE);
 440         }
 441
 442         if (!params.skipcpy) {
 443                 if (params.type == IH_TYPE_MULTI ||
 444                     params.type == IH_TYPE_SCRIPT) {
 445                         char *file = params.datafile;
 446                         uint32_t size;
 447
 448                         for (;;) {
 449                                 char *sep = NULL;
 450
 451                                 if (file) {
 452                                         if ((sep = strchr(file, ':')) != NULL) {
 453                                                 *sep = '\0';
 454                                         }
 455
 456                                         if (stat (file, &sbuf) < 0) {
 457                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 458                                                          params.cmdname, file, strerror(errno));
 459                                                 exit (EXIT_FAILURE);
 460                                         }
 461                                         size = cpu_to_uimage (sbuf.st_size);
 462                                 } else {
 463                                         size = 0;
 464                                 }
 465
 466                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 467                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 468                                                  params.cmdname, params.imagefile,
 469                                                  strerror(errno));
 470                                         exit (EXIT_FAILURE);
 471                                 }
 472
 473                                 if (!file) {
 474                                         break;
 475                                 }
 476
 477                                 if (sep) {
 478                                         *sep = ':';
 479                                         file = sep + 1;
 480                                 } else {
 481                                         file = NULL;
 482                                 }
 483                         }
 484
 485                         file = params.datafile;
 486
 487                         for (;;) {
 488                                 char *sep = strchr(file, ':');
 489                                 if (sep) {
 490                                         *sep = '\0';
 491                                         copy_file (ifd, file, 1);
 492                                         *sep++ = ':';
 493                                         file = sep;
 494                                 } else {
 495                                         copy_file (ifd, file, 0);
 496                                         break;
 497                                 }
 498                         }
 499                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 500                         /* PBL has special Image format, implements its' own */
 501                         pbl_load_uboot(ifd, &params);
 502                 } else {
 503                         copy_file(ifd, params.datafile, pad_len);
 504                 }
 505         }
 506
 507         /* We're a bit of paranoid */
 508 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 509    !defined(__sun__) && \
 510    !defined(__FreeBSD__) && \
 511    !defined(__OpenBSD__) && \
 512    !defined(__APPLE__)
 513         (void) fdatasync (ifd);
 514 #else
 515         (void) fsync (ifd);
 516 #endif
 517
 518         if (fstat(ifd, &sbuf) < 0) {
 519                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 520                         params.cmdname, params.imagefile, strerror(errno));
 521                 exit (EXIT_FAILURE);
 522         }
 523         params.file_size = sbuf.st_size;
 524
 525         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 526         if (ptr == MAP_FAILED) {
 527                 fprintf (stderr, "%s: Can't map %s: %s\n",
 528                         params.cmdname, params.imagefile, strerror(errno));
 529                 exit (EXIT_FAILURE);
 530         }
 531
 532         /* Setup the image header as per input image type*/
 533         if (tparams->set_header)
 534                 tparams->set_header (ptr, &sbuf, ifd, &params);
 535         else {
 536                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 537                         params.cmdname, tparams->name, strerror(errno));
 538                 exit (EXIT_FAILURE);
 539         }
 540
 541         /* Print the image information by processing image header */
 542         if (tparams->print_header)
 543                 tparams->print_header (ptr);
 544         else {
 545                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
 546                         params.cmdname, tparams->name, strerror(errno));
 547                 exit (EXIT_FAILURE);
 548         }
 549
 550         (void) munmap((void *)ptr, sbuf.st_size);
 551
 552         /* We're a bit of paranoid */
 553 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 554    !defined(__sun__) && \
 555    !defined(__FreeBSD__) && \
 556    !defined(__OpenBSD__) && \
 557    !defined(__APPLE__)
 558         (void) fdatasync (ifd);
 559 #else
 560         (void) fsync (ifd);
 561 #endif
 562
 563         if (close(ifd)) {
 564                 fprintf (stderr, "%s: Write error on %s: %s\n",
 565                         params.cmdname, params.imagefile, strerror(errno));
 566                 exit (EXIT_FAILURE);
 567         }
 568
 569         exit (EXIT_SUCCESS);
 570 }
 571
 572 static void
 573 copy_file (int ifd, const char *datafile, int pad)
 574 {
 575         int dfd;
 576         struct stat sbuf;
 577         unsigned char *ptr;
 578         int tail;
 579         int zero = 0;
 580         uint8_t zeros[4096];
 581         int offset = 0;
 582         int size;
 583         struct image_type_params *tparams = imagetool_get_type(params.type);
 584
 585         memset(zeros, 0, sizeof(zeros));
 586
 587         if (params.vflag) {
 588                 fprintf (stderr, "Adding Image %s\n", datafile);
 589         }
 590
 591         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 592                 fprintf (stderr, "%s: Can't open %s: %s\n",
 593                         params.cmdname, datafile, strerror(errno));
 594                 exit (EXIT_FAILURE);
 595         }
 596
 597         if (fstat(dfd, &sbuf) < 0) {
 598                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 599                         params.cmdname, datafile, strerror(errno));
 600                 exit (EXIT_FAILURE);
 601         }
 602
 603         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 604         if (ptr == MAP_FAILED) {
 605                 fprintf (stderr, "%s: Can't read %s: %s\n",
 606                         params.cmdname, datafile, strerror(errno));
 607                 exit (EXIT_FAILURE);
 608         }
 609
 610         if (params.xflag) {
 611                 unsigned char *p = NULL;
 612                 /*
 613                  * XIP: do not append the image_header_t at the
 614                  * beginning of the file, but consume the space
 615                  * reserved for it.
 616                  */
 617
 618                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 619                         fprintf (stderr,
 620                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 621                                 params.cmdname, datafile);
 622                         exit (EXIT_FAILURE);
 623                 }
 624
 625                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 626                         if ( *p != 0xff ) {
 627                                 fprintf (stderr,
 628                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 629                                         params.cmdname, datafile);
 630                                 exit (EXIT_FAILURE);
 631                         }
 632                 }
 633
 634                 offset = tparams->header_size;
 635         }
 636
 637         size = sbuf.st_size - offset;
 638         if (write(ifd, ptr + offset, size) != size) {
 639                 fprintf (stderr, "%s: Write error on %s: %s\n",
 640                         params.cmdname, params.imagefile, strerror(errno));
 641                 exit (EXIT_FAILURE);
 642         }
 643
 644         tail = size % 4;
 645         if ((pad == 1) && (tail != 0)) {
 646
 647                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 648                         fprintf (stderr, "%s: Write error on %s: %s\n",
 649                                 params.cmdname, params.imagefile,
 650                                 strerror(errno));
 651                         exit (EXIT_FAILURE);
 652                 }
 653         } else if (pad > 1) {
 654                 while (pad > 0) {
 655                         int todo = sizeof(zeros);
 656
 657                         if (todo > pad)
 658                                 todo = pad;
 659                         if (write(ifd, (char *)&zeros, todo) != todo) {
 660                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 661                                         params.cmdname, params.imagefile,
 662                                         strerror(errno));
 663                                 exit(EXIT_FAILURE);
 664                         }
 665                         pad -= todo;
 666                 }
 667         }
 668
 669         (void) munmap((void *)ptr, sbuf.st_size);
 670         (void) close (dfd);
 671 }