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