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