tools/mkimage.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2008 Semihalf
   4  *
   5  * (C) Copyright 2000-2009
   6  * DENX Software Engineering
   7  * Wolfgang Denk, wd@denx.de
   8  */
   9
  10 #include "imagetool.h"
  11 #include "mkimage.h"
  12 #include "imximage.h"
  13 #include <image.h>
  14 #include <version.h>
  15
  16 static void copy_file(int, const char *, int);
  17
  18 /* parameters initialized by core will be used by the image type code */
  19 static 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 enum ih_category cur_category;
  30
  31 static int h_compare_category_name(const void *vtype1, const void *vtype2)
  32 {
  33         const int *type1 = vtype1;
  34         const int *type2 = vtype2;
  35         const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
  36         const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
  37
  38         return strcmp(name1, name2);
  39 }
  40
  41 static int show_valid_options(enum ih_category category)
  42 {
  43         int *order;
  44         int count;
  45         int item;
  46         int i;
  47
  48         count = genimg_get_cat_count(category);
  49         order = calloc(count, sizeof(*order));
  50         if (!order)
  51                 return -ENOMEM;
  52
  53         /* Sort the names in order of short name for easier reading */
  54         for (i = 0, item = 0; i < count; i++, item++) {
  55                 while (!genimg_cat_has_id(category, item) && i < count) {
  56                         item++;
  57                         count--;
  58                 }
  59                 order[i] = item;
  60         }
  61         cur_category = category;
  62         qsort(order, count, sizeof(int), h_compare_category_name);
  63
  64         fprintf(stderr, "\nInvalid %s, supported are:\n",
  65                 genimg_get_cat_desc(category));
  66         for (i = 0; i < count; i++) {
  67                 item = order[i];
  68                 fprintf(stderr, "\t%-15s  %s\n",
  69                         genimg_get_cat_short_name(category, item),
  70                         genimg_get_cat_name(category, item));
  71         }
  72         fprintf(stderr, "\n");
  73         free(order);
  74
  75         return 0;
  76 }
  77
  78 static void usage(const char *msg)
  79 {
  80         fprintf(stderr, "Error: %s\n", msg);
  81         fprintf(stderr, "Usage: %s -l image\n"
  82                          "          -l ==> list image header information\n",
  83                 params.cmdname);
  84         fprintf(stderr,
  85                 "       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
  86                 "          -A ==> set architecture to 'arch'\n"
  87                 "          -O ==> set operating system to 'os'\n"
  88                 "          -T ==> set image type to 'type'\n"
  89                 "          -C ==> set compression type 'comp'\n"
  90                 "          -a ==> set load address to 'addr' (hex)\n"
  91                 "          -e ==> set entry point to 'ep' (hex)\n"
  92                 "          -n ==> set image name to 'name'\n"
  93                 "          -d ==> use image data from 'datafile'\n"
  94                 "          -x ==> set XIP (execute in place)\n",
  95                 params.cmdname);
  96         fprintf(stderr,
  97                 "       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] [-i <ramdisk.cpio.gz>] fit-image\n"
  98                 "           <dtb> file is used with -f auto, it may occur multiple times.\n",
  99                 params.cmdname);
 100         fprintf(stderr,
 101                 "          -D => set all options for device tree compiler\n"
 102                 "          -f => input filename for FIT source\n"
 103                 "          -i => input filename for ramdisk file\n");
 104 #ifdef CONFIG_FIT_SIGNATURE
 105         fprintf(stderr,
 106                 "Signing / verified boot options: [-E] [-B size] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
 107                 "          -E => place data outside of the FIT structure\n"
 108                 "          -B => align size in hex for FIT structure and header\n"
 109                 "          -k => set directory containing private keys\n"
 110                 "          -K => write public keys to this .dtb file\n"
 111                 "          -c => add comment in signature node\n"
 112                 "          -F => re-sign existing FIT image\n"
 113                 "          -p => place external data at a static position\n"
 114                 "          -r => mark keys used as 'required' in dtb\n"
 115                 "          -N => openssl engine to use for signing\n");
 116 #else
 117         fprintf(stderr,
 118                 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
 119 #endif
 120         fprintf(stderr, "       %s -V ==> print version information and exit\n",
 121                 params.cmdname);
 122         fprintf(stderr, "Use '-T list' to see a list of available image types\n");
 123
 124         exit(EXIT_FAILURE);
 125 }
 126
 127 static int add_content(int type, const char *fname)
 128 {
 129         struct content_info *cont;
 130
 131         cont = calloc(1, sizeof(*cont));
 132         if (!cont)
 133                 return -1;
 134         cont->type = type;
 135         cont->fname = fname;
 136         if (params.content_tail)
 137                 params.content_tail->next = cont;
 138         else
 139                 params.content_head = cont;
 140         params.content_tail = cont;
 141
 142         return 0;
 143 }
 144
 145 static void process_args(int argc, char **argv)
 146 {
 147         char *ptr;
 148         int type = IH_TYPE_INVALID;
 149         char *datafile = NULL;
 150         int opt;
 151
 152         while ((opt = getopt(argc, argv,
 153                    "a:A:b:B:c:C:d:D:e:Ef:Fk:i:K:ln:N:p:O:rR:qstT:vVx")) != -1) {
 154                 switch (opt) {
 155                 case 'a':
 156                         params.addr = strtoull(optarg, &ptr, 16);
 157                         if (*ptr) {
 158                                 fprintf(stderr, "%s: invalid load address %s\n",
 159                                         params.cmdname, optarg);
 160                                 exit(EXIT_FAILURE);
 161                         }
 162                         break;
 163                 case 'A':
 164                         params.arch = genimg_get_arch_id(optarg);
 165                         if (params.arch < 0) {
 166                                 show_valid_options(IH_ARCH);
 167                                 usage("Invalid architecture");
 168                         }
 169                         break;
 170                 case 'b':
 171                         if (add_content(IH_TYPE_FLATDT, optarg)) {
 172                                 fprintf(stderr,
 173                                         "%s: Out of memory adding content '%s'",
 174                                         params.cmdname, optarg);
 175                                 exit(EXIT_FAILURE);
 176                         }
 177                         break;
 178                 case 'B':
 179                         params.bl_len = strtoull(optarg, &ptr, 16);
 180                         if (*ptr) {
 181                                 fprintf(stderr, "%s: invalid block length %s\n",
 182                                         params.cmdname, optarg);
 183                                 exit(EXIT_FAILURE);
 184                         }
 185
 186                         break;
 187                 case 'c':
 188                         params.comment = optarg;
 189                         break;
 190                 case 'C':
 191                         params.comp = genimg_get_comp_id(optarg);
 192                         if (params.comp < 0) {
 193                                 show_valid_options(IH_COMP);
 194                                 usage("Invalid compression type");
 195                         }
 196                         break;
 197                 case 'd':
 198                         params.datafile = optarg;
 199                         params.dflag = 1;
 200                         break;
 201                 case 'D':
 202                         params.dtc = optarg;
 203                         break;
 204                 case 'e':
 205                         params.ep = strtoull(optarg, &ptr, 16);
 206                         if (*ptr) {
 207                                 fprintf(stderr, "%s: invalid entry point %s\n",
 208                                         params.cmdname, optarg);
 209                                 exit(EXIT_FAILURE);
 210                         }
 211                         params.eflag = 1;
 212                         break;
 213                 case 'E':
 214                         params.external_data = true;
 215                         break;
 216                 case 'f':
 217                         datafile = optarg;
 218                         params.auto_its = !strcmp(datafile, "auto");
 219                         /* fallthrough */
 220                 case 'F':
 221                         /*
 222                          * The flattened image tree (FIT) format
 223                          * requires a flattened device tree image type
 224                          */
 225                         params.type = IH_TYPE_FLATDT;
 226                         params.fflag = 1;
 227                         break;
 228                 case 'i':
 229                         params.fit_ramdisk = optarg;
 230                         break;
 231                 case 'k':
 232                         params.keydir = optarg;
 233                         break;
 234                 case 'K':
 235                         params.keydest = optarg;
 236                         break;
 237                 case 'l':
 238                         params.lflag = 1;
 239                         break;
 240                 case 'n':
 241                         params.imagename = optarg;
 242                         break;
 243                 case 'N':
 244                         params.engine_id = optarg;
 245                         break;
 246                 case 'O':
 247                         params.os = genimg_get_os_id(optarg);
 248                         if (params.os < 0) {
 249                                 show_valid_options(IH_OS);
 250                                 usage("Invalid operating system");
 251                         }
 252                         break;
 253                 case 'p':
 254                         params.external_offset = strtoull(optarg, &ptr, 16);
 255                         if (*ptr) {
 256                                 fprintf(stderr, "%s: invalid offset size %s\n",
 257                                         params.cmdname, optarg);
 258                                 exit(EXIT_FAILURE);
 259                         }
 260                         break;
 261                 case 'q':
 262                         params.quiet = 1;
 263                         break;
 264                 case 'r':
 265                         params.require_keys = 1;
 266                         break;
 267                 case 'R':
 268                         /*
 269                          * This entry is for the second configuration
 270                          * file, if only one is not enough.
 271                          */
 272                         params.imagename2 = optarg;
 273                         break;
 274                 case 's':
 275                         params.skipcpy = 1;
 276                         break;
 277                 case 't':
 278                         params.reset_timestamp = 1;
 279                         break;
 280                 case 'T':
 281                         if (strcmp(optarg, "list") == 0) {
 282                                 show_valid_options(IH_TYPE);
 283                                 exit(EXIT_SUCCESS);
 284                         }
 285                         type = genimg_get_type_id(optarg);
 286                         if (type < 0) {
 287                                 show_valid_options(IH_TYPE);
 288                                 usage("Invalid image type");
 289                         }
 290                         break;
 291                 case 'v':
 292                         params.vflag++;
 293                         break;
 294                 case 'V':
 295                         printf("mkimage version %s\n", PLAIN_VERSION);
 296                         exit(EXIT_SUCCESS);
 297                 case 'x':
 298                         params.xflag++;
 299                         break;
 300                 default:
 301                         usage("Invalid option");
 302                 }
 303         }
 304
 305         /* The last parameter is expected to be the imagefile */
 306         if (optind < argc)
 307                 params.imagefile = argv[optind];
 308
 309         /*
 310          * For auto-generated FIT images we need to know the image type to put
 311          * in the FIT, which is separate from the file's image type (which
 312          * will always be IH_TYPE_FLATDT in this case).
 313          */
 314         if (params.type == IH_TYPE_FLATDT) {
 315                 params.fit_image_type = type ? type : IH_TYPE_KERNEL;
 316                 /* For auto_its, datafile is always 'auto' */
 317                 if (!params.auto_its)
 318                         params.datafile = datafile;
 319                 else if (!params.datafile)
 320                         usage("Missing data file for auto-FIT (use -d)");
 321         } else if (type != IH_TYPE_INVALID) {
 322                 if (type == IH_TYPE_SCRIPT && !params.datafile)
 323                         usage("Missing data file for script (use -d)");
 324                 params.type = type;
 325         }
 326
 327         if (!params.imagefile)
 328                 usage("Missing output filename");
 329 }
 330
 331 int main(int argc, char **argv)
 332 {
 333         int ifd = -1;
 334         struct stat sbuf;
 335         char *ptr;
 336         int retval = 0;
 337         struct image_type_params *tparams = NULL;
 338         int pad_len = 0;
 339         int dfd;
 340         size_t map_len;
 341
 342         params.cmdname = *argv;
 343         params.addr = 0;
 344         params.ep = 0;
 345
 346         process_args(argc, argv);
 347
 348         /* set tparams as per input type_id */
 349         tparams = imagetool_get_type(params.type);
 350         if (tparams == NULL) {
 351                 fprintf (stderr, "%s: unsupported type %s\n",
 352                         params.cmdname, genimg_get_type_name(params.type));
 353                 exit (EXIT_FAILURE);
 354         }
 355
 356         /*
 357          * check the passed arguments parameters meets the requirements
 358          * as per image type to be generated/listed
 359          */
 360         if (tparams->check_params)
 361                 if (tparams->check_params (&params))
 362                         usage("Bad parameters for image type");
 363
 364         if (!params.eflag) {
 365                 params.ep = params.addr;
 366                 /* If XIP, entry point must be after the U-Boot header */
 367                 if (params.xflag)
 368                         params.ep += tparams->header_size;
 369         }
 370
 371         if (params.fflag){
 372                 if (tparams->fflag_handle)
 373                         /*
 374                          * in some cases, some additional processing needs
 375                          * to be done if fflag is defined
 376                          *
 377                          * For ex. fit_handle_file for Fit file support
 378                          */
 379                         retval = tparams->fflag_handle(&params);
 380
 381                 if (retval != EXIT_SUCCESS)
 382                         exit (retval);
 383         }
 384
 385         if (params.lflag || params.fflag) {
 386                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 387         } else {
 388                 ifd = open (params.imagefile,
 389                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 390         }
 391
 392         if (ifd < 0) {
 393                 fprintf (stderr, "%s: Can't open %s: %s\n",
 394                         params.cmdname, params.imagefile,
 395                         strerror(errno));
 396                 exit (EXIT_FAILURE);
 397         }
 398
 399         if (params.lflag || params.fflag) {
 400                 /*
 401                  * list header information of existing image
 402                  */
 403                 if (fstat(ifd, &sbuf) < 0) {
 404                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 405                                 params.cmdname, params.imagefile,
 406                                 strerror(errno));
 407                         exit (EXIT_FAILURE);
 408                 }
 409
 410                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 411                         fprintf (stderr,
 412                                 "%s: Bad size: \"%s\" is not valid image\n",
 413                                 params.cmdname, params.imagefile);
 414                         exit (EXIT_FAILURE);
 415                 }
 416
 417                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 418                 if (ptr == MAP_FAILED) {
 419                         fprintf (stderr, "%s: Can't read %s: %s\n",
 420                                 params.cmdname, params.imagefile,
 421                                 strerror(errno));
 422                         exit (EXIT_FAILURE);
 423                 }
 424
 425                 if (params.fflag) {
 426                         /*
 427                          * Verifies the header format based on the expected header for image
 428                          * type in tparams
 429                          */
 430                         retval = imagetool_verify_print_header_by_type(ptr, &sbuf,
 431                                         tparams, &params);
 432                 } else {
 433                         /**
 434                          * When listing the image, we are not given the image type. Simply check all
 435                          * image types to find one that matches our header
 436                          */
 437                         retval = imagetool_verify_print_header(ptr, &sbuf,
 438                                         tparams, &params);
 439                 }
 440
 441                 (void) munmap((void *)ptr, sbuf.st_size);
 442                 (void) close (ifd);
 443
 444                 exit (retval);
 445         }
 446
 447         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 448                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 449                 if (dfd < 0) {
 450                         fprintf(stderr, "%s: Can't open %s: %s\n",
 451                                 params.cmdname, params.datafile,
 452                                 strerror(errno));
 453                         exit(EXIT_FAILURE);
 454                 }
 455
 456                 if (fstat(dfd, &sbuf) < 0) {
 457                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 458                                 params.cmdname, params.datafile,
 459                                 strerror(errno));
 460                         exit(EXIT_FAILURE);
 461                 }
 462
 463                 params.file_size = sbuf.st_size + tparams->header_size;
 464                 close(dfd);
 465         }
 466
 467         /*
 468          * In case there an header with a variable
 469          * length will be added, the corresponding
 470          * function is called. This is responsible to
 471          * allocate memory for the header itself.
 472          */
 473         if (tparams->vrec_header)
 474                 pad_len = tparams->vrec_header(&params, tparams);
 475         else
 476                 memset(tparams->hdr, 0, tparams->header_size);
 477
 478         if (write(ifd, tparams->hdr, tparams->header_size)
 479                                         != tparams->header_size) {
 480                 fprintf (stderr, "%s: Write error on %s: %s\n",
 481                         params.cmdname, params.imagefile, strerror(errno));
 482                 exit (EXIT_FAILURE);
 483         }
 484
 485         if (!params.skipcpy) {
 486                 if (params.type == IH_TYPE_MULTI ||
 487                     params.type == IH_TYPE_SCRIPT) {
 488                         char *file = params.datafile;
 489                         uint32_t size;
 490
 491                         for (;;) {
 492                                 char *sep = NULL;
 493
 494                                 if (file) {
 495                                         if ((sep = strchr(file, ':')) != NULL) {
 496                                                 *sep = '\0';
 497                                         }
 498
 499                                         if (stat (file, &sbuf) < 0) {
 500                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 501                                                          params.cmdname, file, strerror(errno));
 502                                                 exit (EXIT_FAILURE);
 503                                         }
 504                                         size = cpu_to_uimage (sbuf.st_size);
 505                                 } else {
 506                                         size = 0;
 507                                 }
 508
 509                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 510                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 511                                                  params.cmdname, params.imagefile,
 512                                                  strerror(errno));
 513                                         exit (EXIT_FAILURE);
 514                                 }
 515
 516                                 if (!file) {
 517                                         break;
 518                                 }
 519
 520                                 if (sep) {
 521                                         *sep = ':';
 522                                         file = sep + 1;
 523                                 } else {
 524                                         file = NULL;
 525                                 }
 526                         }
 527
 528                         file = params.datafile;
 529
 530                         for (;;) {
 531                                 char *sep = strchr(file, ':');
 532                                 if (sep) {
 533                                         *sep = '\0';
 534                                         copy_file (ifd, file, 1);
 535                                         *sep++ = ':';
 536                                         file = sep;
 537                                 } else {
 538                                         copy_file (ifd, file, 0);
 539                                         break;
 540                                 }
 541                         }
 542                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 543                         /* PBL has special Image format, implements its' own */
 544                         pbl_load_uboot(ifd, &params);
 545                 } else if (params.type == IH_TYPE_ZYNQMPBIF) {
 546                         /* Image file is meta, walk through actual targets */
 547                         int ret;
 548
 549                         ret = zynqmpbif_copy_image(ifd, &params);
 550                         if (ret)
 551                                 return ret;
 552                 } else if (params.type == IH_TYPE_IMX8IMAGE) {
 553                         /* i.MX8/8X has special Image format */
 554                         int ret;
 555
 556                         ret = imx8image_copy_image(ifd, &params);
 557                         if (ret)
 558                                 return ret;
 559                 } else if (params.type == IH_TYPE_IMX8MIMAGE) {
 560                         /* i.MX8M has special Image format */
 561                         int ret;
 562
 563                         ret = imx8mimage_copy_image(ifd, &params);
 564                         if (ret)
 565                                 return ret;
 566                 } else if ((params.type == IH_TYPE_RKSD) ||
 567                                 (params.type == IH_TYPE_RKSPI)) {
 568                         /* Rockchip has special Image format */
 569                         int ret;
 570
 571                         ret = rockchip_copy_image(ifd, &params);
 572                         if (ret)
 573                                 return ret;
 574                 } else {
 575                         copy_file(ifd, params.datafile, pad_len);
 576                 }
 577                 if (params.type == IH_TYPE_FIRMWARE_IVT) {
 578                         /* Add alignment and IVT */
 579                         uint32_t aligned_filesize = ALIGN(params.file_size,
 580                                                           0x1000);
 581                         flash_header_v2_t ivt_header = { { 0xd1, 0x2000, 0x40 },
 582                                         params.addr, 0, 0, 0, params.addr
 583                                                         + aligned_filesize
 584                                                         - tparams->header_size,
 585                                         params.addr + aligned_filesize
 586                                                         - tparams->header_size
 587                                                         + 0x20, 0 };
 588                         int i = params.file_size;
 589                         for (; i < aligned_filesize; i++) {
 590                                 if (write(ifd, (char *) &i, 1) != 1) {
 591                                         fprintf(stderr,
 592                                                         "%s: Write error on %s: %s\n",
 593                                                         params.cmdname,
 594                                                         params.imagefile,
 595                                                         strerror(errno));
 596                                         exit(EXIT_FAILURE);
 597                                 }
 598                         }
 599                         if (write(ifd, &ivt_header, sizeof(flash_header_v2_t))
 600                                         != sizeof(flash_header_v2_t)) {
 601                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 602                                                 params.cmdname,
 603                                                 params.imagefile,
 604                                                 strerror(errno));
 605                                 exit(EXIT_FAILURE);
 606                         }
 607                 }
 608         }
 609
 610         /* We're a bit of paranoid */
 611 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 612    !defined(__sun__) && \
 613    !defined(__FreeBSD__) && \
 614    !defined(__OpenBSD__) && \
 615    !defined(__APPLE__)
 616         (void) fdatasync (ifd);
 617 #else
 618         (void) fsync (ifd);
 619 #endif
 620
 621         if (fstat(ifd, &sbuf) < 0) {
 622                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 623                         params.cmdname, params.imagefile, strerror(errno));
 624                 exit (EXIT_FAILURE);
 625         }
 626         params.file_size = sbuf.st_size;
 627
 628         map_len = sbuf.st_size;
 629         ptr = mmap(0, map_len, PROT_READ | PROT_WRITE, MAP_SHARED, ifd, 0);
 630         if (ptr == MAP_FAILED) {
 631                 fprintf (stderr, "%s: Can't map %s: %s\n",
 632                         params.cmdname, params.imagefile, strerror(errno));
 633                 exit (EXIT_FAILURE);
 634         }
 635
 636         /* Setup the image header as per input image type*/
 637         if (tparams->set_header)
 638                 tparams->set_header (ptr, &sbuf, ifd, &params);
 639         else {
 640                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 641                         params.cmdname, tparams->name, strerror(errno));
 642                 exit (EXIT_FAILURE);
 643         }
 644
 645         /* Print the image information by processing image header */
 646         if (tparams->print_header)
 647                 tparams->print_header (ptr);
 648         else {
 649                 fprintf (stderr, "%s: Can't print header for %s\n",
 650                         params.cmdname, tparams->name);
 651         }
 652
 653         (void)munmap((void *)ptr, map_len);
 654
 655         /* We're a bit of paranoid */
 656 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 657    !defined(__sun__) && \
 658    !defined(__FreeBSD__) && \
 659    !defined(__OpenBSD__) && \
 660    !defined(__APPLE__)
 661         (void) fdatasync (ifd);
 662 #else
 663         (void) fsync (ifd);
 664 #endif
 665
 666         if (close(ifd)) {
 667                 fprintf (stderr, "%s: Write error on %s: %s\n",
 668                         params.cmdname, params.imagefile, strerror(errno));
 669                 exit (EXIT_FAILURE);
 670         }
 671
 672         exit (EXIT_SUCCESS);
 673 }
 674
 675 static void
 676 copy_file (int ifd, const char *datafile, int pad)
 677 {
 678         int dfd;
 679         struct stat sbuf;
 680         unsigned char *ptr;
 681         int tail;
 682         int zero = 0;
 683         uint8_t zeros[4096];
 684         int offset = 0;
 685         int size, ret;
 686         struct image_type_params *tparams = imagetool_get_type(params.type);
 687
 688         memset(zeros, 0, sizeof(zeros));
 689
 690         if (params.vflag) {
 691                 fprintf (stderr, "Adding Image %s\n", datafile);
 692         }
 693
 694         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 695                 fprintf (stderr, "%s: Can't open %s: %s\n",
 696                         params.cmdname, datafile, strerror(errno));
 697                 exit (EXIT_FAILURE);
 698         }
 699
 700         if (fstat(dfd, &sbuf) < 0) {
 701                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 702                         params.cmdname, datafile, strerror(errno));
 703                 exit (EXIT_FAILURE);
 704         }
 705
 706         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 707         if (ptr == MAP_FAILED) {
 708                 fprintf (stderr, "%s: Can't read %s: %s\n",
 709                         params.cmdname, datafile, strerror(errno));
 710                 exit (EXIT_FAILURE);
 711         }
 712
 713         if (params.xflag) {
 714                 unsigned char *p = NULL;
 715                 /*
 716                  * XIP: do not append the image_header_t at the
 717                  * beginning of the file, but consume the space
 718                  * reserved for it.
 719                  */
 720
 721                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 722                         fprintf (stderr,
 723                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 724                                 params.cmdname, datafile);
 725                         exit (EXIT_FAILURE);
 726                 }
 727
 728                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 729                         if ( *p != 0xff ) {
 730                                 fprintf (stderr,
 731                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 732                                         params.cmdname, datafile);
 733                                 exit (EXIT_FAILURE);
 734                         }
 735                 }
 736
 737                 offset = tparams->header_size;
 738         }
 739
 740         size = sbuf.st_size - offset;
 741
 742         ret = write(ifd, ptr + offset, size);
 743         if (ret != size) {
 744                 if (ret < 0)
 745                         fprintf (stderr, "%s: Write error on %s: %s\n",
 746                                  params.cmdname, params.imagefile, strerror(errno));
 747                 else if (ret < size)
 748                         fprintf (stderr, "%s: Write only %d/%d bytes, "\
 749                                  "probably no space left on the device\n",
 750                                  params.cmdname, ret, size);
 751                 exit (EXIT_FAILURE);
 752         }
 753
 754         tail = size % 4;
 755         if ((pad == 1) && (tail != 0)) {
 756
 757                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 758                         fprintf (stderr, "%s: Write error on %s: %s\n",
 759                                 params.cmdname, params.imagefile,
 760                                 strerror(errno));
 761                         exit (EXIT_FAILURE);
 762                 }
 763         } else if (pad > 1) {
 764                 while (pad > 0) {
 765                         int todo = sizeof(zeros);
 766
 767                         if (todo > pad)
 768                                 todo = pad;
 769                         if (write(ifd, (char *)&zeros, todo) != todo) {
 770                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 771                                         params.cmdname, params.imagefile,
 772                                         strerror(errno));
 773                                 exit(EXIT_FAILURE);
 774                         }
 775                         pad -= todo;
 776                 }
 777         }
 778
 779         (void) munmap((void *)ptr, sbuf.st_size);
 780         (void) close (dfd);
 781 }