tools/fit_image.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2008 Semihalf
   4  *
   5  * (C) Copyright 2000-2004
   6  * DENX Software Engineering
   7  * Wolfgang Denk, wd@denx.de
   8  *
   9  * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
  10  *              FIT image specific code abstracted from mkimage.c
  11  *              some functions added to address abstraction
  12  *
  13  * All rights reserved.
  14  */
  15
  16 #include "imagetool.h"
  17 #include "fit_common.h"
  18 #include "mkimage.h"
  19 #include <image.h>
  20 #include <string.h>
  21 #include <stdarg.h>
  22 #include <version.h>
  23 #include <u-boot/crc.h>
  24
  25 static image_header_t header;
  26
  27 static int fit_add_file_data(struct image_tool_params *params, size_t size_inc,
  28                              const char *tmpfile)
  29 {
  30         int tfd, destfd = 0;
  31         void *dest_blob = NULL;
  32         off_t destfd_size = 0;
  33         struct stat sbuf;
  34         void *ptr;
  35         int ret = 0;
  36
  37         tfd = mmap_fdt(params->cmdname, tmpfile, size_inc, &ptr, &sbuf, true,
  38                        false);
  39         if (tfd < 0)
  40                 return -EIO;
  41
  42         if (params->keydest) {
  43                 struct stat dest_sbuf;
  44
  45                 destfd = mmap_fdt(params->cmdname, params->keydest, size_inc,
  46                                   &dest_blob, &dest_sbuf, false,
  47                                   false);
  48                 if (destfd < 0) {
  49                         ret = -EIO;
  50                         goto err_keydest;
  51                 }
  52                 destfd_size = dest_sbuf.st_size;
  53         }
  54
  55         /* for first image creation, add a timestamp at offset 0 i.e., root  */
  56         if (params->datafile) {
  57                 time_t time = imagetool_get_source_date(params->cmdname,
  58                                                         sbuf.st_mtime);
  59                 ret = fit_set_timestamp(ptr, 0, time);
  60         }
  61
  62         if (!ret) {
  63                 ret = fit_cipher_data(params->keydir, dest_blob, ptr,
  64                                       params->comment,
  65                                       params->require_keys,
  66                                       params->engine_id,
  67                                       params->cmdname);
  68         }
  69
  70         if (!ret) {
  71                 ret = fit_add_verification_data(params->keydir, dest_blob, ptr,
  72                                                 params->comment,
  73                                                 params->require_keys,
  74                                                 params->engine_id,
  75                                                 params->cmdname);
  76         }
  77
  78         if (dest_blob) {
  79                 munmap(dest_blob, destfd_size);
  80                 close(destfd);
  81         }
  82
  83 err_keydest:
  84         munmap(ptr, sbuf.st_size);
  85         close(tfd);
  86         return ret;
  87 }
  88
  89 /**
  90  * fit_calc_size() - Calculate the approximate size of the FIT we will generate
  91  */
  92 static int fit_calc_size(struct image_tool_params *params)
  93 {
  94         struct content_info *cont;
  95         int size, total_size;
  96
  97         size = imagetool_get_filesize(params, params->datafile);
  98         if (size < 0)
  99                 return -1;
 100         total_size = size;
 101
 102         if (params->fit_ramdisk) {
 103                 size = imagetool_get_filesize(params, params->fit_ramdisk);
 104                 if (size < 0)
 105                         return -1;
 106                 total_size += size;
 107         }
 108
 109         for (cont = params->content_head; cont; cont = cont->next) {
 110                 size = imagetool_get_filesize(params, cont->fname);
 111                 if (size < 0)
 112                         return -1;
 113
 114                 /* Add space for properties */
 115                 total_size += size + 300;
 116         }
 117
 118         /* Add plenty of space for headers, properties, nodes, etc. */
 119         total_size += 4096;
 120
 121         return total_size;
 122 }
 123
 124 static int fdt_property_file(struct image_tool_params *params,
 125                              void *fdt, const char *name, const char *fname)
 126 {
 127         struct stat sbuf;
 128         void *ptr;
 129         int ret;
 130         int fd;
 131
 132         fd = open(fname, O_RDWR | O_BINARY);
 133         if (fd < 0) {
 134                 fprintf(stderr, "%s: Can't open %s: %s\n",
 135                         params->cmdname, fname, strerror(errno));
 136                 return -1;
 137         }
 138
 139         if (fstat(fd, &sbuf) < 0) {
 140                 fprintf(stderr, "%s: Can't stat %s: %s\n",
 141                         params->cmdname, fname, strerror(errno));
 142                 goto err;
 143         }
 144
 145         ret = fdt_property_placeholder(fdt, "data", sbuf.st_size, &ptr);
 146         if (ret)
 147                 goto err;
 148         ret = read(fd, ptr, sbuf.st_size);
 149         if (ret != sbuf.st_size) {
 150                 fprintf(stderr, "%s: Can't read %s: %s\n",
 151                         params->cmdname, fname, strerror(errno));
 152                 goto err;
 153         }
 154         close(fd);
 155
 156         return 0;
 157 err:
 158         close(fd);
 159         return -1;
 160 }
 161
 162 static int fdt_property_strf(void *fdt, const char *name, const char *fmt, ...)
 163 {
 164         char str[100];
 165         va_list ptr;
 166
 167         va_start(ptr, fmt);
 168         vsnprintf(str, sizeof(str), fmt, ptr);
 169         va_end(ptr);
 170         return fdt_property_string(fdt, name, str);
 171 }
 172
 173 static void get_basename(char *str, int size, const char *fname)
 174 {
 175         const char *p, *start, *end;
 176         int len;
 177
 178         /*
 179          * Use the base name as the 'name' field. So for example:
 180          *
 181          * "arch/arm/dts/sun7i-a20-bananapro.dtb"
 182          * becomes "sun7i-a20-bananapro"
 183          */
 184         p = strrchr(fname, '/');
 185         start = p ? p + 1 : fname;
 186         p = strrchr(fname, '.');
 187         end = p ? p : fname + strlen(fname);
 188         len = end - start;
 189         if (len >= size)
 190                 len = size - 1;
 191         memcpy(str, start, len);
 192         str[len] = '\0';
 193 }
 194
 195 /**
 196  * fit_write_images() - Write out a list of images to the FIT
 197  *
 198  * We always include the main image (params->datafile). If there are device
 199  * tree files, we include an fdt- node for each of those too.
 200  */
 201 static int fit_write_images(struct image_tool_params *params, char *fdt)
 202 {
 203         struct content_info *cont;
 204         const char *typename;
 205         char str[100];
 206         int upto;
 207         int ret;
 208
 209         fdt_begin_node(fdt, "images");
 210
 211         /* First the main image */
 212         typename = genimg_get_type_short_name(params->fit_image_type);
 213         snprintf(str, sizeof(str), "%s-1", typename);
 214         fdt_begin_node(fdt, str);
 215         fdt_property_string(fdt, FIT_DESC_PROP, params->imagename);
 216         fdt_property_string(fdt, FIT_TYPE_PROP, typename);
 217         fdt_property_string(fdt, FIT_ARCH_PROP,
 218                             genimg_get_arch_short_name(params->arch));
 219         fdt_property_string(fdt, FIT_OS_PROP,
 220                             genimg_get_os_short_name(params->os));
 221         fdt_property_string(fdt, FIT_COMP_PROP,
 222                             genimg_get_comp_short_name(params->comp));
 223         fdt_property_u32(fdt, FIT_LOAD_PROP, params->addr);
 224         fdt_property_u32(fdt, FIT_ENTRY_PROP, params->ep);
 225
 226         /*
 227          * Put data last since it is large. SPL may only load the first part
 228          * of the DT, so this way it can access all the above fields.
 229          */
 230         ret = fdt_property_file(params, fdt, FIT_DATA_PROP, params->datafile);
 231         if (ret)
 232                 return ret;
 233         fdt_end_node(fdt);
 234
 235         /* Now the device tree files if available */
 236         upto = 0;
 237         for (cont = params->content_head; cont; cont = cont->next) {
 238                 if (cont->type != IH_TYPE_FLATDT)
 239                         continue;
 240                 typename = genimg_get_type_short_name(cont->type);
 241                 snprintf(str, sizeof(str), "%s-%d", FIT_FDT_PROP, ++upto);
 242                 fdt_begin_node(fdt, str);
 243
 244                 get_basename(str, sizeof(str), cont->fname);
 245                 fdt_property_string(fdt, FIT_DESC_PROP, str);
 246                 ret = fdt_property_file(params, fdt, FIT_DATA_PROP,
 247                                         cont->fname);
 248                 if (ret)
 249                         return ret;
 250                 fdt_property_string(fdt, FIT_TYPE_PROP, typename);
 251                 fdt_property_string(fdt, FIT_ARCH_PROP,
 252                                     genimg_get_arch_short_name(params->arch));
 253                 fdt_property_string(fdt, FIT_COMP_PROP,
 254                                     genimg_get_comp_short_name(IH_COMP_NONE));
 255                 fdt_end_node(fdt);
 256         }
 257
 258         /* And a ramdisk file if available */
 259         if (params->fit_ramdisk) {
 260                 fdt_begin_node(fdt, FIT_RAMDISK_PROP "-1");
 261
 262                 fdt_property_string(fdt, FIT_TYPE_PROP, FIT_RAMDISK_PROP);
 263                 fdt_property_string(fdt, FIT_OS_PROP,
 264                                     genimg_get_os_short_name(params->os));
 265                 fdt_property_string(fdt, FIT_ARCH_PROP,
 266                                     genimg_get_arch_short_name(params->arch));
 267
 268                 ret = fdt_property_file(params, fdt, FIT_DATA_PROP,
 269                                         params->fit_ramdisk);
 270                 if (ret)
 271                         return ret;
 272
 273                 fdt_end_node(fdt);
 274         }
 275
 276         fdt_end_node(fdt);
 277
 278         return 0;
 279 }
 280
 281 /**
 282  * fit_write_configs() - Write out a list of configurations to the FIT
 283  *
 284  * If there are device tree files, we include a configuration for each, which
 285  * selects the main image (params->datafile) and its corresponding device
 286  * tree file.
 287  *
 288  * Otherwise we just create a configuration with the main image in it.
 289  */
 290 static void fit_write_configs(struct image_tool_params *params, char *fdt)
 291 {
 292         struct content_info *cont;
 293         const char *typename;
 294         char str[100];
 295         int upto;
 296
 297         fdt_begin_node(fdt, "configurations");
 298         fdt_property_string(fdt, FIT_DEFAULT_PROP, "conf-1");
 299
 300         upto = 0;
 301         for (cont = params->content_head; cont; cont = cont->next) {
 302                 if (cont->type != IH_TYPE_FLATDT)
 303                         continue;
 304                 typename = genimg_get_type_short_name(cont->type);
 305                 snprintf(str, sizeof(str), "conf-%d", ++upto);
 306                 fdt_begin_node(fdt, str);
 307
 308                 get_basename(str, sizeof(str), cont->fname);
 309                 fdt_property_string(fdt, FIT_DESC_PROP, str);
 310
 311                 typename = genimg_get_type_short_name(params->fit_image_type);
 312                 snprintf(str, sizeof(str), "%s-1", typename);
 313                 fdt_property_string(fdt, typename, str);
 314                 fdt_property_string(fdt, FIT_LOADABLE_PROP, str);
 315
 316                 if (params->fit_ramdisk)
 317                         fdt_property_string(fdt, FIT_RAMDISK_PROP,
 318                                             FIT_RAMDISK_PROP "-1");
 319
 320                 snprintf(str, sizeof(str), FIT_FDT_PROP "-%d", upto);
 321                 fdt_property_string(fdt, FIT_FDT_PROP, str);
 322                 fdt_end_node(fdt);
 323         }
 324
 325         if (!upto) {
 326                 fdt_begin_node(fdt, "conf-1");
 327                 typename = genimg_get_type_short_name(params->fit_image_type);
 328                 snprintf(str, sizeof(str), "%s-1", typename);
 329                 fdt_property_string(fdt, typename, str);
 330
 331                 if (params->fit_ramdisk)
 332                         fdt_property_string(fdt, FIT_RAMDISK_PROP,
 333                                             FIT_RAMDISK_PROP "-1");
 334
 335                 fdt_end_node(fdt);
 336         }
 337
 338         fdt_end_node(fdt);
 339 }
 340
 341 static int fit_build_fdt(struct image_tool_params *params, char *fdt, int size)
 342 {
 343         int ret;
 344
 345         ret = fdt_create(fdt, size);
 346         if (ret)
 347                 return ret;
 348         fdt_finish_reservemap(fdt);
 349         fdt_begin_node(fdt, "");
 350         fdt_property_strf(fdt, FIT_DESC_PROP,
 351                           "%s image with one or more FDT blobs",
 352                           genimg_get_type_name(params->fit_image_type));
 353         fdt_property_strf(fdt, "creator", "U-Boot mkimage %s", PLAIN_VERSION);
 354         fdt_property_u32(fdt, "#address-cells", 1);
 355         ret = fit_write_images(params, fdt);
 356         if (ret)
 357                 return ret;
 358         fit_write_configs(params, fdt);
 359         fdt_end_node(fdt);
 360         ret = fdt_finish(fdt);
 361         if (ret)
 362                 return ret;
 363
 364         return fdt_totalsize(fdt);
 365 }
 366
 367 static int fit_build(struct image_tool_params *params, const char *fname)
 368 {
 369         char *buf;
 370         int size;
 371         int ret;
 372         int fd;
 373
 374         size = fit_calc_size(params);
 375         if (size < 0)
 376                 return -1;
 377         buf = malloc(size);
 378         if (!buf) {
 379                 fprintf(stderr, "%s: Out of memory (%d bytes)\n",
 380                         params->cmdname, size);
 381                 return -1;
 382         }
 383         ret = fit_build_fdt(params, buf, size);
 384         if (ret < 0) {
 385                 fprintf(stderr, "%s: Failed to build FIT image\n",
 386                         params->cmdname);
 387                 goto err_buf;
 388         }
 389         size = ret;
 390         fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
 391         if (fd < 0) {
 392                 fprintf(stderr, "%s: Can't open %s: %s\n",
 393                         params->cmdname, fname, strerror(errno));
 394                 goto err_buf;
 395         }
 396         ret = write(fd, buf, size);
 397         if (ret != size) {
 398                 fprintf(stderr, "%s: Can't write %s: %s\n",
 399                         params->cmdname, fname, strerror(errno));
 400                 goto err;
 401         }
 402         close(fd);
 403         free(buf);
 404
 405         return 0;
 406 err:
 407         close(fd);
 408 err_buf:
 409         free(buf);
 410         return -1;
 411 }
 412
 413 /**
 414  * fit_extract_data() - Move all data outside the FIT
 415  *
 416  * This takes a normal FIT file and removes all the 'data' properties from it.
 417  * The data is placed in an area after the FIT so that it can be accessed
 418  * using an offset into that area. The 'data' properties turn into
 419  * 'data-offset' properties.
 420  *
 421  * This function cannot cope with FITs with 'data-offset' properties. All
 422  * data must be in 'data' properties on entry.
 423  */
 424 static int fit_extract_data(struct image_tool_params *params, const char *fname)
 425 {
 426         void *buf = NULL;
 427         int buf_ptr;
 428         int fit_size, new_size;
 429         int fd;
 430         struct stat sbuf;
 431         void *fdt;
 432         int ret;
 433         int images;
 434         int node;
 435         int image_number;
 436         int align_size;
 437
 438         align_size = params->bl_len ? params->bl_len : 4;
 439         fd = mmap_fdt(params->cmdname, fname, 0, &fdt, &sbuf, false, false);
 440         if (fd < 0)
 441                 return -EIO;
 442         fit_size = fdt_totalsize(fdt);
 443
 444         images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
 445         if (images < 0) {
 446                 debug("%s: Cannot find /images node: %d\n", __func__, images);
 447                 ret = -EINVAL;
 448                 goto err_munmap;
 449         }
 450         image_number = fdtdec_get_child_count(fdt, images);
 451
 452         /*
 453          * Allocate space to hold the image data we will extract,
 454          * extral space allocate for image alignment to prevent overflow.
 455          */
 456         buf = malloc(fit_size + (align_size * image_number));
 457         if (!buf) {
 458                 ret = -ENOMEM;
 459                 goto err_munmap;
 460         }
 461         buf_ptr = 0;
 462
 463         for (node = fdt_first_subnode(fdt, images);
 464              node >= 0;
 465              node = fdt_next_subnode(fdt, node)) {
 466                 const char *data;
 467                 int len;
 468
 469                 data = fdt_getprop(fdt, node, FIT_DATA_PROP, &len);
 470                 if (!data)
 471                         continue;
 472                 memcpy(buf + buf_ptr, data, len);
 473                 debug("Extracting data size %x\n", len);
 474
 475                 ret = fdt_delprop(fdt, node, FIT_DATA_PROP);
 476                 if (ret) {
 477                         ret = -EPERM;
 478                         goto err_munmap;
 479                 }
 480                 if (params->external_offset > 0) {
 481                         /* An external offset positions the data absolutely. */
 482                         fdt_setprop_u32(fdt, node, FIT_DATA_POSITION_PROP,
 483                                         params->external_offset + buf_ptr);
 484                 } else {
 485                         fdt_setprop_u32(fdt, node, FIT_DATA_OFFSET_PROP,
 486                                         buf_ptr);
 487                 }
 488                 fdt_setprop_u32(fdt, node, FIT_DATA_SIZE_PROP, len);
 489                 buf_ptr += ALIGN(len, align_size);
 490         }
 491
 492         /* Pack the FDT and place the data after it */
 493         fdt_pack(fdt);
 494
 495         new_size = fdt_totalsize(fdt);
 496         new_size = ALIGN(new_size, align_size);
 497         fdt_set_totalsize(fdt, new_size);
 498         debug("Size reduced from %x to %x\n", fit_size, fdt_totalsize(fdt));
 499         debug("External data size %x\n", buf_ptr);
 500         munmap(fdt, sbuf.st_size);
 501
 502         if (ftruncate(fd, new_size)) {
 503                 debug("%s: Failed to truncate file: %s\n", __func__,
 504                       strerror(errno));
 505                 ret = -EIO;
 506                 goto err;
 507         }
 508
 509         /* Check if an offset for the external data was set. */
 510         if (params->external_offset > 0) {
 511                 if (params->external_offset < new_size) {
 512                         debug("External offset %x overlaps FIT length %x",
 513                               params->external_offset, new_size);
 514                         ret = -EINVAL;
 515                         goto err;
 516                 }
 517                 new_size = params->external_offset;
 518         }
 519         if (lseek(fd, new_size, SEEK_SET) < 0) {
 520                 debug("%s: Failed to seek to end of file: %s\n", __func__,
 521                       strerror(errno));
 522                 ret = -EIO;
 523                 goto err;
 524         }
 525         if (write(fd, buf, buf_ptr) != buf_ptr) {
 526                 debug("%s: Failed to write external data to file %s\n",
 527                       __func__, strerror(errno));
 528                 ret = -EIO;
 529                 goto err;
 530         }
 531         free(buf);
 532         close(fd);
 533         return 0;
 534
 535 err_munmap:
 536         munmap(fdt, sbuf.st_size);
 537 err:
 538         free(buf);
 539         close(fd);
 540         return ret;
 541 }
 542
 543 static int fit_import_data(struct image_tool_params *params, const char *fname)
 544 {
 545         void *fdt, *old_fdt;
 546         int fit_size, new_size, size, data_base;
 547         int fd;
 548         struct stat sbuf;
 549         int ret;
 550         int images;
 551         int node;
 552
 553         fd = mmap_fdt(params->cmdname, fname, 0, &old_fdt, &sbuf, false, false);
 554         if (fd < 0)
 555                 return -EIO;
 556         fit_size = fdt_totalsize(old_fdt);
 557         data_base = ALIGN(fit_size, 4);
 558
 559         /* Allocate space to hold the new FIT */
 560         size = sbuf.st_size + 16384;
 561         fdt = malloc(size);
 562         if (!fdt) {
 563                 fprintf(stderr, "%s: Failed to allocate memory (%d bytes)\n",
 564                         __func__, size);
 565                 ret = -ENOMEM;
 566                 goto err_munmap;
 567         }
 568         ret = fdt_open_into(old_fdt, fdt, size);
 569         if (ret) {
 570                 debug("%s: Failed to expand FIT: %s\n", __func__,
 571                       fdt_strerror(errno));
 572                 ret = -EINVAL;
 573                 goto err_munmap;
 574         }
 575
 576         images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
 577         if (images < 0) {
 578                 debug("%s: Cannot find /images node: %d\n", __func__, images);
 579                 ret = -EINVAL;
 580                 goto err_munmap;
 581         }
 582
 583         for (node = fdt_first_subnode(fdt, images);
 584              node >= 0;
 585              node = fdt_next_subnode(fdt, node)) {
 586                 int buf_ptr;
 587                 int len;
 588
 589                 buf_ptr = fdtdec_get_int(fdt, node, "data-offset", -1);
 590                 len = fdtdec_get_int(fdt, node, "data-size", -1);
 591                 if (buf_ptr == -1 || len == -1)
 592                         continue;
 593                 debug("Importing data size %x\n", len);
 594
 595                 ret = fdt_setprop(fdt, node, "data", fdt + data_base + buf_ptr,
 596                                   len);
 597                 if (ret) {
 598                         debug("%s: Failed to write property: %s\n", __func__,
 599                               fdt_strerror(ret));
 600                         ret = -EINVAL;
 601                         goto err_munmap;
 602                 }
 603         }
 604
 605         munmap(old_fdt, sbuf.st_size);
 606
 607         /* Close the old fd so we can re-use it. */
 608         close(fd);
 609
 610         /* Pack the FDT and place the data after it */
 611         fdt_pack(fdt);
 612
 613         new_size = fdt_totalsize(fdt);
 614         debug("Size expanded from %x to %x\n", fit_size, new_size);
 615
 616         fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
 617         if (fd < 0) {
 618                 fprintf(stderr, "%s: Can't open %s: %s\n",
 619                         params->cmdname, fname, strerror(errno));
 620                 ret = -EIO;
 621                 goto err;
 622         }
 623         if (write(fd, fdt, new_size) != new_size) {
 624                 debug("%s: Failed to write external data to file %s\n",
 625                       __func__, strerror(errno));
 626                 ret = -EIO;
 627                 goto err;
 628         }
 629
 630         free(fdt);
 631         close(fd);
 632         return 0;
 633
 634 err_munmap:
 635         munmap(old_fdt, sbuf.st_size);
 636 err:
 637         free(fdt);
 638         close(fd);
 639         return ret;
 640 }
 641
 642 static int copyfile(const char *src, const char *dst)
 643 {
 644         int fd_src = -1, fd_dst = -1;
 645         void *buf = NULL;
 646         ssize_t size;
 647         size_t count;
 648         int ret = -1;
 649
 650         fd_src = open(src, O_RDONLY);
 651         if (fd_src < 0) {
 652                 printf("Can't open file %s (%s)\n", src, strerror(errno));
 653                 goto out;
 654         }
 655
 656         fd_dst = open(dst, O_WRONLY | O_CREAT, 0666);
 657         if (fd_dst < 0) {
 658                 printf("Can't open file %s (%s)\n", dst, strerror(errno));
 659                 goto out;
 660         }
 661
 662         buf = malloc(512);
 663         if (!buf) {
 664                 printf("Can't allocate buffer to copy file\n");
 665                 goto out;
 666         }
 667
 668         while (1) {
 669                 size = read(fd_src, buf, 512);
 670                 if (size < 0) {
 671                         printf("Can't read file %s\n", src);
 672                         goto out;
 673                 }
 674                 if (!size)
 675                         break;
 676
 677                 count = size;
 678                 size = write(fd_dst, buf, count);
 679                 if (size < 0) {
 680                         printf("Can't write file %s\n", dst);
 681                         goto out;
 682                 }
 683         }
 684
 685         ret = 0;
 686
 687  out:
 688         if (fd_src >= 0)
 689                 close(fd_src);
 690         if (fd_dst >= 0)
 691                 close(fd_dst);
 692         if (buf)
 693                 free(buf);
 694
 695         return ret;
 696 }
 697
 698 /**
 699  * fit_handle_file - main FIT file processing function
 700  *
 701  * fit_handle_file() runs dtc to convert .its to .itb, includes
 702  * binary data, updates timestamp property and calculates hashes.
 703  *
 704  * datafile  - .its file
 705  * imagefile - .itb file
 706  *
 707  * returns:
 708  *     only on success, otherwise calls exit (EXIT_FAILURE);
 709  */
 710 static int fit_handle_file(struct image_tool_params *params)
 711 {
 712         char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
 713         char bakfile[MKIMAGE_MAX_TMPFILE_LEN + 4] = {0};
 714         char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
 715         size_t size_inc;
 716         int ret;
 717
 718         /* Flattened Image Tree (FIT) format  handling */
 719         debug ("FIT format handling\n");
 720
 721         /* call dtc to include binary properties into the tmp file */
 722         if (strlen (params->imagefile) +
 723                 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
 724                 fprintf (stderr, "%s: Image file name (%s) too long, "
 725                                 "can't create tmpfile",
 726                                 params->imagefile, params->cmdname);
 727                 return (EXIT_FAILURE);
 728         }
 729         sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
 730
 731         /* We either compile the source file, or use the existing FIT image */
 732         if (params->auto_its) {
 733                 if (fit_build(params, tmpfile)) {
 734                         fprintf(stderr, "%s: failed to build FIT\n",
 735                                 params->cmdname);
 736                         return EXIT_FAILURE;
 737                 }
 738                 *cmd = '\0';
 739         } else if (params->datafile) {
 740                 /* dtc -I dts -O dtb -p 500 -o tmpfile datafile */
 741                 snprintf(cmd, sizeof(cmd), "%s %s -o \"%s\" \"%s\"",
 742                          MKIMAGE_DTC, params->dtc, tmpfile, params->datafile);
 743                 debug("Trying to execute \"%s\"\n", cmd);
 744         } else {
 745                 snprintf(cmd, sizeof(cmd), "cp \"%s\" \"%s\"",
 746                          params->imagefile, tmpfile);
 747         }
 748         if (strlen(cmd) >= MKIMAGE_MAX_DTC_CMDLINE_LEN - 1) {
 749                 fprintf(stderr, "WARNING: command-line for FIT creation might be truncated and will probably fail.\n");
 750         }
 751
 752         if (*cmd && system(cmd) == -1) {
 753                 fprintf (stderr, "%s: system(%s) failed: %s\n",
 754                                 params->cmdname, cmd, strerror(errno));
 755                 goto err_system;
 756         }
 757
 758         /* Move the data so it is internal to the FIT, if needed */
 759         ret = fit_import_data(params, tmpfile);
 760         if (ret)
 761                 goto err_system;
 762
 763         /*
 764          * Copy the tmpfile to bakfile, then in the following loop
 765          * we copy bakfile to tmpfile. So we always start from the
 766          * beginning.
 767          */
 768         sprintf(bakfile, "%s%s", tmpfile, ".bak");
 769         rename(tmpfile, bakfile);
 770
 771         /*
 772          * Set hashes for images in the blob. Unfortunately we may need more
 773          * space in either FDT, so keep trying until we succeed.
 774          *
 775          * Note: this is pretty inefficient for signing, since we must
 776          * calculate the signature every time. It would be better to calculate
 777          * all the data and then store it in a separate step. However, this
 778          * would be considerably more complex to implement. Generally a few
 779          * steps of this loop is enough to sign with several keys.
 780          */
 781         for (size_inc = 0; size_inc < 64 * 1024; size_inc += 1024) {
 782                 if (copyfile(bakfile, tmpfile) < 0) {
 783                         printf("Can't copy %s to %s\n", bakfile, tmpfile);
 784                         ret = -EIO;
 785                         break;
 786                 }
 787                 ret = fit_add_file_data(params, size_inc, tmpfile);
 788                 if (!ret || ret != -ENOSPC)
 789                         break;
 790         }
 791
 792         if (ret) {
 793                 fprintf(stderr, "%s Can't add hashes to FIT blob: %d\n",
 794                         params->cmdname, ret);
 795                 goto err_system;
 796         }
 797
 798         /* Move the data so it is external to the FIT, if requested */
 799         if (params->external_data) {
 800                 ret = fit_extract_data(params, tmpfile);
 801                 if (ret)
 802                         goto err_system;
 803         }
 804
 805         if (rename (tmpfile, params->imagefile) == -1) {
 806                 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
 807                                 params->cmdname, tmpfile, params->imagefile,
 808                                 strerror (errno));
 809                 unlink (tmpfile);
 810                 unlink(bakfile);
 811                 unlink (params->imagefile);
 812                 return EXIT_FAILURE;
 813         }
 814         unlink(bakfile);
 815         return EXIT_SUCCESS;
 816
 817 err_system:
 818         unlink(tmpfile);
 819         unlink(bakfile);
 820         return -1;
 821 }
 822
 823 /**
 824  * fit_image_extract - extract a FIT component image
 825  * @fit: pointer to the FIT format image header
 826  * @image_noffset: offset of the component image node
 827  * @file_name: name of the file to store the FIT sub-image
 828  *
 829  * returns:
 830  *     zero in case of success or a negative value if fail.
 831  */
 832 static int fit_image_extract(
 833         const void *fit,
 834         int image_noffset,
 835         const char *file_name)
 836 {
 837         const void *file_data;
 838         size_t file_size = 0;
 839         int ret;
 840
 841         /* get the data address and size of component at offset "image_noffset" */
 842         ret = fit_image_get_data_and_size(fit, image_noffset, &file_data, &file_size);
 843         if (ret) {
 844                 fprintf(stderr, "Could not get component information\n");
 845                 return ret;
 846         }
 847
 848         /* save the "file_data" into the file specified by "file_name" */
 849         return imagetool_save_subimage(file_name, (ulong) file_data, file_size);
 850 }
 851
 852 /**
 853  * fit_extract_contents - retrieve a sub-image component from the FIT image
 854  * @ptr: pointer to the FIT format image header
 855  * @params: command line parameters
 856  *
 857  * returns:
 858  *     zero in case of success or a negative value if fail.
 859  */
 860 static int fit_extract_contents(void *ptr, struct image_tool_params *params)
 861 {
 862         int images_noffset;
 863         int noffset;
 864         int ndepth;
 865         const void *fit = ptr;
 866         int count = 0;
 867         const char *p;
 868
 869         /* Indent string is defined in header image.h */
 870         p = IMAGE_INDENT_STRING;
 871
 872         if (!fit_check_format(fit)) {
 873                 printf("Bad FIT image format\n");
 874                 return -1;
 875         }
 876
 877         /* Find images parent node offset */
 878         images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
 879         if (images_noffset < 0) {
 880                 printf("Can't find images parent node '%s' (%s)\n",
 881                        FIT_IMAGES_PATH, fdt_strerror(images_noffset));
 882                 return -1;
 883         }
 884
 885         /* Avoid any overrun */
 886         count = fit_get_subimage_count(fit, images_noffset);
 887         if ((params->pflag < 0) || (count <= params->pflag)) {
 888                 printf("No such component at '%d'\n", params->pflag);
 889                 return -1;
 890         }
 891
 892         /* Process its subnodes, extract the desired component from image */
 893         for (ndepth = 0, count = 0,
 894                 noffset = fdt_next_node(fit, images_noffset, &ndepth);
 895                 (noffset >= 0) && (ndepth > 0);
 896                 noffset = fdt_next_node(fit, noffset, &ndepth)) {
 897                 if (ndepth == 1) {
 898                         /*
 899                          * Direct child node of the images parent node,
 900                          * i.e. component image node.
 901                          */
 902                         if (params->pflag == count) {
 903                                 printf("Extracted:\n%s Image %u (%s)\n", p,
 904                                        count, fit_get_name(fit, noffset, NULL));
 905
 906                                 fit_image_print(fit, noffset, p);
 907
 908                                 return fit_image_extract(fit, noffset,
 909                                                 params->outfile);
 910                         }
 911
 912                         count++;
 913                 }
 914         }
 915
 916         return 0;
 917 }
 918
 919 static int fit_check_params(struct image_tool_params *params)
 920 {
 921         if (params->auto_its)
 922                 return 0;
 923         return  ((params->dflag && params->fflag) ||
 924                  (params->fflag && params->lflag) ||
 925                  (params->lflag && params->dflag));
 926 }
 927
 928 U_BOOT_IMAGE_TYPE(
 929         fitimage,
 930         "FIT Image support",
 931         sizeof(image_header_t),
 932         (void *)&header,
 933         fit_check_params,
 934         fit_verify_header,
 935         fit_print_contents,
 936         NULL,
 937         fit_extract_contents,
 938         fit_check_image_types,
 939         fit_handle_file,
 940         NULL /* FIT images use DTB header */
 941 );