// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2008 Semihalf * * (C) Copyright 2000-2004 * DENX Software Engineering * Wolfgang Denk, wd@denx.de * * Updated-by: Prafulla Wadaskar * FIT image specific code abstracted from mkimage.c * some functions added to address abstraction * * All rights reserved. */ #include "imagetool.h" #include "fit_common.h" #include "mkimage.h" #include #include #include #include #include static struct legacy_img_hdr header; static int fit_add_file_data(struct image_tool_params *params, size_t size_inc, const char *tmpfile) { int tfd, destfd = 0; void *dest_blob = NULL; off_t destfd_size = 0; struct stat sbuf; void *ptr; int ret = 0; tfd = mmap_fdt(params->cmdname, tmpfile, size_inc, &ptr, &sbuf, true, false); if (tfd < 0) { fprintf(stderr, "Cannot map FDT file '%s'\n", tmpfile); return -EIO; } if (params->keydest) { struct stat dest_sbuf; destfd = mmap_fdt(params->cmdname, params->keydest, size_inc, &dest_blob, &dest_sbuf, false, false); if (destfd < 0) { ret = -EIO; goto err_keydest; } destfd_size = dest_sbuf.st_size; } /* for first image creation, add a timestamp at offset 0 i.e., root */ if (params->datafile || params->reset_timestamp) { time_t time = imagetool_get_source_date(params->cmdname, sbuf.st_mtime); ret = fit_set_timestamp(ptr, 0, time); } if (!ret) ret = fit_pre_load_data(params->keydir, dest_blob, ptr); if (!ret) { ret = fit_cipher_data(params->keydir, dest_blob, ptr, params->comment, params->require_keys, params->engine_id, params->cmdname); } if (!ret) { ret = fit_add_verification_data(params->keydir, params->keyfile, dest_blob, ptr, params->comment, params->require_keys, params->engine_id, params->cmdname, params->algo_name, ¶ms->summary); } if (dest_blob) { munmap(dest_blob, destfd_size); close(destfd); } err_keydest: munmap(ptr, sbuf.st_size); close(tfd); return ret; } /** * fit_calc_size() - Calculate the approximate size of the FIT we will generate */ static int fit_calc_size(struct image_tool_params *params) { struct content_info *cont; int size, total_size; size = imagetool_get_filesize(params, params->datafile); if (size < 0) return -1; total_size = size; if (params->fit_ramdisk) { size = imagetool_get_filesize(params, params->fit_ramdisk); if (size < 0) return -1; total_size += size; } for (cont = params->content_head; cont; cont = cont->next) { size = imagetool_get_filesize(params, cont->fname); if (size < 0) return -1; /* Add space for properties and hash node */ total_size += size + 300; } /* Add plenty of space for headers, properties, nodes, etc. */ total_size += 4096; return total_size; } static int fdt_property_file(struct image_tool_params *params, void *fdt, const char *name, const char *fname) { struct stat sbuf; void *ptr; int ret; int fd; fd = open(fname, O_RDWR | O_BINARY); if (fd < 0) { fprintf(stderr, "%s: Can't open %s: %s\n", params->cmdname, fname, strerror(errno)); return -1; } if (fstat(fd, &sbuf) < 0) { fprintf(stderr, "%s: Can't stat %s: %s\n", params->cmdname, fname, strerror(errno)); goto err; } ret = fdt_property_placeholder(fdt, "data", sbuf.st_size, &ptr); if (ret) goto err; ret = read(fd, ptr, sbuf.st_size); if (ret != sbuf.st_size) { fprintf(stderr, "%s: Can't read %s: %s\n", params->cmdname, fname, strerror(errno)); goto err; } close(fd); return 0; err: close(fd); return -1; } static int fdt_property_strf(void *fdt, const char *name, const char *fmt, ...) { char str[100]; va_list ptr; va_start(ptr, fmt); vsnprintf(str, sizeof(str), fmt, ptr); va_end(ptr); return fdt_property_string(fdt, name, str); } static void get_basename(char *str, int size, const char *fname) { const char *p, *start, *end; int len; /* * Use the base name as the 'name' field. So for example: * * "arch/arm/dts/sun7i-a20-bananapro.dtb" * becomes "sun7i-a20-bananapro" */ p = strrchr(fname, '/'); start = p ? p + 1 : fname; p = strrchr(fname, '.'); end = p ? p : fname + strlen(fname); len = end - start; if (len >= size) len = size - 1; memcpy(str, start, len); str[len] = '\0'; } /** * fit_add_hash_or_sign() - Add a hash or signature node * * @params: Image parameters * @fdt: Device tree to add to (in sequential-write mode) * @is_images_subnode: true to add hash even if key name hint is provided * * If do_add_hash is false (default) and there is a key name hint, try to add * a sign node to parent. Otherwise, just add a CRC. Rationale: if conf have * to be signed, image/dt have to be hashed even if there is a key name hint. */ static void fit_add_hash_or_sign(struct image_tool_params *params, void *fdt, bool is_images_subnode) { const char *hash_algo = "crc32"; bool do_hash = false; bool do_sign = false; switch (params->auto_fit) { case AF_OFF: break; case AF_HASHED_IMG: do_hash = is_images_subnode; break; case AF_SIGNED_IMG: do_sign = is_images_subnode; break; case AF_SIGNED_CONF: if (is_images_subnode) { do_hash = true; hash_algo = "sha1"; } else { do_sign = true; } break; default: fprintf(stderr, "%s: Unsupported auto FIT mode %u\n", params->cmdname, params->auto_fit); break; } if (do_hash) { fdt_begin_node(fdt, FIT_HASH_NODENAME); fdt_property_string(fdt, FIT_ALGO_PROP, hash_algo); fdt_end_node(fdt); } if (do_sign) { fdt_begin_node(fdt, FIT_SIG_NODENAME); fdt_property_string(fdt, FIT_ALGO_PROP, params->algo_name); fdt_property_string(fdt, FIT_KEY_HINT, params->keyname); fdt_end_node(fdt); } } /** * fit_write_images() - Write out a list of images to the FIT * * We always include the main image (params->datafile). If there are device * tree files, we include an fdt- node for each of those too. */ static int fit_write_images(struct image_tool_params *params, char *fdt) { struct content_info *cont; const char *typename; char str[100]; int upto; int ret; fdt_begin_node(fdt, "images"); /* First the main image */ typename = genimg_get_type_short_name(params->fit_image_type); snprintf(str, sizeof(str), "%s-1", typename); fdt_begin_node(fdt, str); fdt_property_string(fdt, FIT_DESC_PROP, params->imagename); fdt_property_string(fdt, FIT_TYPE_PROP, typename); fdt_property_string(fdt, FIT_ARCH_PROP, genimg_get_arch_short_name(params->arch)); fdt_property_string(fdt, FIT_OS_PROP, genimg_get_os_short_name(params->os)); fdt_property_string(fdt, FIT_COMP_PROP, genimg_get_comp_short_name(params->comp)); fdt_property_u32(fdt, FIT_LOAD_PROP, params->addr); fdt_property_u32(fdt, FIT_ENTRY_PROP, params->ep); /* * Put data last since it is large. SPL may only load the first part * of the DT, so this way it can access all the above fields. */ ret = fdt_property_file(params, fdt, FIT_DATA_PROP, params->datafile); if (ret) return ret; fit_add_hash_or_sign(params, fdt, true); fdt_end_node(fdt); /* Now the device tree files if available */ upto = 0; for (cont = params->content_head; cont; cont = cont->next) { if (cont->type != IH_TYPE_FLATDT) continue; typename = genimg_get_type_short_name(cont->type); snprintf(str, sizeof(str), "%s-%d", FIT_FDT_PROP, ++upto); fdt_begin_node(fdt, str); get_basename(str, sizeof(str), cont->fname); fdt_property_string(fdt, FIT_DESC_PROP, str); ret = fdt_property_file(params, fdt, FIT_DATA_PROP, cont->fname); if (ret) return ret; fdt_property_string(fdt, FIT_TYPE_PROP, typename); fdt_property_string(fdt, FIT_ARCH_PROP, genimg_get_arch_short_name(params->arch)); fdt_property_string(fdt, FIT_COMP_PROP, genimg_get_comp_short_name(IH_COMP_NONE)); fit_add_hash_or_sign(params, fdt, true); if (ret) return ret; fdt_end_node(fdt); } /* And a ramdisk file if available */ if (params->fit_ramdisk) { fdt_begin_node(fdt, FIT_RAMDISK_PROP "-1"); fdt_property_string(fdt, FIT_TYPE_PROP, FIT_RAMDISK_PROP); fdt_property_string(fdt, FIT_OS_PROP, genimg_get_os_short_name(params->os)); fdt_property_string(fdt, FIT_ARCH_PROP, genimg_get_arch_short_name(params->arch)); ret = fdt_property_file(params, fdt, FIT_DATA_PROP, params->fit_ramdisk); if (ret) return ret; fit_add_hash_or_sign(params, fdt, true); if (ret) return ret; fdt_end_node(fdt); } fdt_end_node(fdt); return 0; } /** * fit_write_configs() - Write out a list of configurations to the FIT * * If there are device tree files, we include a configuration for each, which * selects the main image (params->datafile) and its corresponding device * tree file. * * Otherwise we just create a configuration with the main image in it. */ static void fit_write_configs(struct image_tool_params *params, char *fdt) { struct content_info *cont; const char *typename; char str[100]; int upto; fdt_begin_node(fdt, "configurations"); fdt_property_string(fdt, FIT_DEFAULT_PROP, "conf-1"); upto = 0; for (cont = params->content_head; cont; cont = cont->next) { if (cont->type != IH_TYPE_FLATDT) continue; typename = genimg_get_type_short_name(cont->type); snprintf(str, sizeof(str), "conf-%d", ++upto); fdt_begin_node(fdt, str); get_basename(str, sizeof(str), cont->fname); fdt_property_string(fdt, FIT_DESC_PROP, str); typename = genimg_get_type_short_name(params->fit_image_type); snprintf(str, sizeof(str), "%s-1", typename); fdt_property_string(fdt, typename, str); fdt_property_string(fdt, FIT_LOADABLE_PROP, str); if (params->fit_ramdisk) fdt_property_string(fdt, FIT_RAMDISK_PROP, FIT_RAMDISK_PROP "-1"); snprintf(str, sizeof(str), FIT_FDT_PROP "-%d", upto); fdt_property_string(fdt, FIT_FDT_PROP, str); fit_add_hash_or_sign(params, fdt, false); fdt_end_node(fdt); } if (!upto) { fdt_begin_node(fdt, "conf-1"); typename = genimg_get_type_short_name(params->fit_image_type); snprintf(str, sizeof(str), "%s-1", typename); fdt_property_string(fdt, typename, str); if (params->fit_ramdisk) fdt_property_string(fdt, FIT_RAMDISK_PROP, FIT_RAMDISK_PROP "-1"); fit_add_hash_or_sign(params, fdt, false); fdt_end_node(fdt); } fdt_end_node(fdt); } static int fit_build_fdt(struct image_tool_params *params, char *fdt, int size) { int ret; ret = fdt_create(fdt, size); if (ret) return ret; fdt_finish_reservemap(fdt); fdt_begin_node(fdt, ""); fdt_property_strf(fdt, FIT_DESC_PROP, "%s image with one or more FDT blobs", genimg_get_type_name(params->fit_image_type)); fdt_property_strf(fdt, "creator", "U-Boot mkimage %s", PLAIN_VERSION); fdt_property_u32(fdt, "#address-cells", 1); ret = fit_write_images(params, fdt); if (ret) return ret; fit_write_configs(params, fdt); fdt_end_node(fdt); ret = fdt_finish(fdt); if (ret) return ret; return fdt_totalsize(fdt); } static int fit_build(struct image_tool_params *params, const char *fname) { char *buf; int size; int ret; int fd; size = fit_calc_size(params); if (size < 0) return -1; buf = calloc(1, size); if (!buf) { fprintf(stderr, "%s: Out of memory (%d bytes)\n", params->cmdname, size); return -1; } ret = fit_build_fdt(params, buf, size); if (ret < 0) { fprintf(stderr, "%s: Failed to build FIT image\n", params->cmdname); goto err_buf; } size = ret; fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666); if (fd < 0) { fprintf(stderr, "%s: Can't open %s: %s\n", params->cmdname, fname, strerror(errno)); goto err_buf; } ret = write(fd, buf, size); if (ret != size) { fprintf(stderr, "%s: Can't write %s: %s\n", params->cmdname, fname, strerror(errno)); goto err; } close(fd); free(buf); return 0; err: close(fd); err_buf: free(buf); return -1; } /** * fit_extract_data() - Move all data outside the FIT * * This takes a normal FIT file and removes all the 'data' properties from it. * The data is placed in an area after the FIT so that it can be accessed * using an offset into that area. The 'data' properties turn into * 'data-offset' properties. * * This function cannot cope with FITs with 'data-offset' properties. All * data must be in 'data' properties on entry. */ static int fit_extract_data(struct image_tool_params *params, const char *fname) { void *buf = NULL; int buf_ptr; int fit_size, new_size; int fd; struct stat sbuf; void *fdt; int ret; int images; int node; int image_number; int align_size; align_size = params->bl_len ? params->bl_len : 4; fd = mmap_fdt(params->cmdname, fname, 0, &fdt, &sbuf, false, false); if (fd < 0) return -EIO; fit_size = fdt_totalsize(fdt); images = fdt_path_offset(fdt, FIT_IMAGES_PATH); if (images < 0) { debug("%s: Cannot find /images node: %d\n", __func__, images); ret = -EINVAL; goto err_munmap; } image_number = fdtdec_get_child_count(fdt, images); /* * Allocate space to hold the image data we will extract, * extral space allocate for image alignment to prevent overflow. */ buf = calloc(1, fit_size + (align_size * image_number)); if (!buf) { ret = -ENOMEM; goto err_munmap; } buf_ptr = 0; for (node = fdt_first_subnode(fdt, images); node >= 0; node = fdt_next_subnode(fdt, node)) { const char *data; int len; data = fdt_getprop(fdt, node, FIT_DATA_PROP, &len); if (!data) continue; memcpy(buf + buf_ptr, data, len); debug("Extracting data size %x\n", len); ret = fdt_delprop(fdt, node, FIT_DATA_PROP); if (ret) { ret = -EPERM; goto err_munmap; } if (params->external_offset > 0) { /* An external offset positions the data absolutely. */ fdt_setprop_u32(fdt, node, FIT_DATA_POSITION_PROP, params->external_offset + buf_ptr); } else { fdt_setprop_u32(fdt, node, FIT_DATA_OFFSET_PROP, buf_ptr); } fdt_setprop_u32(fdt, node, FIT_DATA_SIZE_PROP, len); buf_ptr += ALIGN(len, align_size); } /* Pack the FDT and place the data after it */ fdt_pack(fdt); new_size = fdt_totalsize(fdt); new_size = ALIGN(new_size, align_size); fdt_set_totalsize(fdt, new_size); debug("Size reduced from %x to %x\n", fit_size, fdt_totalsize(fdt)); debug("External data size %x\n", buf_ptr); munmap(fdt, sbuf.st_size); if (ftruncate(fd, new_size)) { debug("%s: Failed to truncate file: %s\n", __func__, strerror(errno)); ret = -EIO; goto err; } /* Check if an offset for the external data was set. */ if (params->external_offset > 0) { if (params->external_offset < new_size) { fprintf(stderr, "External offset %x overlaps FIT length %x\n", params->external_offset, new_size); ret = -EINVAL; goto err; } new_size = params->external_offset; } if (lseek(fd, new_size, SEEK_SET) < 0) { debug("%s: Failed to seek to end of file: %s\n", __func__, strerror(errno)); ret = -EIO; goto err; } if (write(fd, buf, buf_ptr) != buf_ptr) { debug("%s: Failed to write external data to file %s\n", __func__, strerror(errno)); ret = -EIO; goto err; } free(buf); close(fd); return 0; err_munmap: munmap(fdt, sbuf.st_size); err: free(buf); close(fd); return ret; } static int fit_import_data(struct image_tool_params *params, const char *fname) { void *fdt, *old_fdt; void *data = NULL; const char *ext_data_prop = NULL; int fit_size, new_size, size, data_base; int fd; struct stat sbuf; int ret; int images; int node; fd = mmap_fdt(params->cmdname, fname, 0, &old_fdt, &sbuf, false, false); if (fd < 0) return -EIO; fit_size = fdt_totalsize(old_fdt); data_base = ALIGN(fit_size, 4); /* Allocate space to hold the new FIT */ size = sbuf.st_size + 16384; fdt = calloc(1, size); if (!fdt) { fprintf(stderr, "%s: Failed to allocate memory (%d bytes)\n", __func__, size); ret = -ENOMEM; goto err_munmap; } ret = fdt_open_into(old_fdt, fdt, size); if (ret) { debug("%s: Failed to expand FIT: %s\n", __func__, fdt_strerror(errno)); ret = -EINVAL; goto err_munmap; } images = fdt_path_offset(fdt, FIT_IMAGES_PATH); if (images < 0) { debug("%s: Cannot find /images node: %d\n", __func__, images); ret = -EINVAL; goto err_munmap; } for (node = fdt_first_subnode(fdt, images); node >= 0; node = fdt_next_subnode(fdt, node)) { int buf_ptr; int len; /* * FIT_DATA_OFFSET_PROP and FIT_DATA_POSITION_PROP are never both present, * but if they are, prefer FIT_DATA_OFFSET_PROP as it was there first */ buf_ptr = fdtdec_get_int(fdt, node, FIT_DATA_POSITION_PROP, -1); if (buf_ptr != -1) { ext_data_prop = FIT_DATA_POSITION_PROP; data = old_fdt + buf_ptr; } buf_ptr = fdtdec_get_int(fdt, node, FIT_DATA_OFFSET_PROP, -1); if (buf_ptr != -1) { ext_data_prop = FIT_DATA_OFFSET_PROP; data = old_fdt + data_base + buf_ptr; } len = fdtdec_get_int(fdt, node, FIT_DATA_SIZE_PROP, -1); if (!data || len == -1) continue; debug("Importing data size %x\n", len); ret = fdt_setprop(fdt, node, FIT_DATA_PROP, data, len); ret = fdt_delprop(fdt, node, ext_data_prop); if (ret) { debug("%s: Failed to write property: %s\n", __func__, fdt_strerror(ret)); ret = -EINVAL; goto err_munmap; } } munmap(old_fdt, sbuf.st_size); /* Close the old fd so we can re-use it. */ close(fd); /* Pack the FDT and place the data after it */ fdt_pack(fdt); new_size = fdt_totalsize(fdt); debug("Size expanded from %x to %x\n", fit_size, new_size); fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666); if (fd < 0) { fprintf(stderr, "%s: Can't open %s: %s\n", params->cmdname, fname, strerror(errno)); ret = -EIO; goto err; } if (write(fd, fdt, new_size) != new_size) { debug("%s: Failed to write external data to file %s\n", __func__, strerror(errno)); ret = -EIO; goto err; } free(fdt); close(fd); return 0; err_munmap: munmap(old_fdt, sbuf.st_size); err: free(fdt); close(fd); return ret; } /** * fit_handle_file - main FIT file processing function * * fit_handle_file() runs dtc to convert .its to .itb, includes * binary data, updates timestamp property and calculates hashes. * * datafile - .its file * imagefile - .itb file * * returns: * only on success, otherwise calls exit (EXIT_FAILURE); */ static int fit_handle_file(struct image_tool_params *params) { char tmpfile[MKIMAGE_MAX_TMPFILE_LEN]; char bakfile[MKIMAGE_MAX_TMPFILE_LEN + 4] = {0}; char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN]; size_t size_inc; int ret; /* Flattened Image Tree (FIT) format handling */ debug ("FIT format handling\n"); /* call dtc to include binary properties into the tmp file */ if (strlen (params->imagefile) + strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) { fprintf (stderr, "%s: Image file name (%s) too long, " "can't create tmpfile.\n", params->imagefile, params->cmdname); return (EXIT_FAILURE); } sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX); /* We either compile the source file, or use the existing FIT image */ if (params->auto_fit) { if (fit_build(params, tmpfile)) { fprintf(stderr, "%s: failed to build FIT\n", params->cmdname); return EXIT_FAILURE; } *cmd = '\0'; } else if (params->datafile) { /* dtc -I dts -O dtb -p 500 -o tmpfile datafile */ snprintf(cmd, sizeof(cmd), "%s %s -o \"%s\" \"%s\"", MKIMAGE_DTC, params->dtc, tmpfile, params->datafile); debug("Trying to execute \"%s\"\n", cmd); } else { snprintf(cmd, sizeof(cmd), "cp \"%s\" \"%s\"", params->imagefile, tmpfile); } if (strlen(cmd) >= MKIMAGE_MAX_DTC_CMDLINE_LEN - 1) { fprintf(stderr, "WARNING: command-line for FIT creation might be truncated and will probably fail.\n"); } if (*cmd && system(cmd) == -1) { fprintf (stderr, "%s: system(%s) failed: %s\n", params->cmdname, cmd, strerror(errno)); goto err_system; } /* Move the data so it is internal to the FIT, if needed */ ret = fit_import_data(params, tmpfile); if (ret) goto err_system; /* * Copy the tmpfile to bakfile, then in the following loop * we copy bakfile to tmpfile. So we always start from the * beginning. */ sprintf(bakfile, "%s%s", tmpfile, ".bak"); rename(tmpfile, bakfile); /* * Set hashes for images in the blob. Unfortunately we may need more * space in either FDT, so keep trying until we succeed. * * Note: this is pretty inefficient for signing, since we must * calculate the signature every time. It would be better to calculate * all the data and then store it in a separate step. However, this * would be considerably more complex to implement. Generally a few * steps of this loop is enough to sign with several keys. */ for (size_inc = 0; size_inc < 64 * 1024; size_inc += 1024) { if (copyfile(bakfile, tmpfile) < 0) { printf("Can't copy %s to %s\n", bakfile, tmpfile); ret = -EIO; break; } ret = fit_add_file_data(params, size_inc, tmpfile); if (!ret || ret != -ENOSPC) break; } if (ret) { fprintf(stderr, "%s Can't add hashes to FIT blob: %d\n", params->cmdname, ret); goto err_system; } /* Move the data so it is external to the FIT, if requested */ if (params->external_data) { ret = fit_extract_data(params, tmpfile); if (ret) goto err_system; } if (rename (tmpfile, params->imagefile) == -1) { fprintf (stderr, "%s: Can't rename %s to %s: %s\n", params->cmdname, tmpfile, params->imagefile, strerror (errno)); unlink (tmpfile); unlink(bakfile); unlink (params->imagefile); return EXIT_FAILURE; } unlink(bakfile); return EXIT_SUCCESS; err_system: unlink(tmpfile); unlink(bakfile); return -1; } /** * fit_image_extract - extract a FIT component image * @fit: pointer to the FIT format image header * @image_noffset: offset of the component image node * @file_name: name of the file to store the FIT sub-image * * returns: * zero in case of success or a negative value if fail. */ static int fit_image_extract( const void *fit, int image_noffset, const char *file_name) { const void *file_data; size_t file_size = 0; int ret; /* get the data address and size of component at offset "image_noffset" */ ret = fit_image_get_data_and_size(fit, image_noffset, &file_data, &file_size); if (ret) { fprintf(stderr, "Could not get component information\n"); return ret; } /* save the "file_data" into the file specified by "file_name" */ return imagetool_save_subimage(file_name, (ulong) file_data, file_size); } /** * fit_extract_contents - retrieve a sub-image component from the FIT image * @ptr: pointer to the FIT format image header * @params: command line parameters * * returns: * zero in case of success or a negative value if fail. */ static int fit_extract_contents(void *ptr, struct image_tool_params *params) { int images_noffset; int noffset; int ndepth; const void *fit = ptr; int count = 0; const char *p; /* Indent string is defined in header image.h */ p = IMAGE_INDENT_STRING; /* Find images parent node offset */ images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH); if (images_noffset < 0) { printf("Can't find images parent node '%s' (%s)\n", FIT_IMAGES_PATH, fdt_strerror(images_noffset)); return -1; } /* Avoid any overrun */ count = fit_get_subimage_count(fit, images_noffset); if ((params->pflag < 0) || (count <= params->pflag)) { printf("No such component at '%d'\n", params->pflag); return -1; } /* Process its subnodes, extract the desired component from image */ for (ndepth = 0, count = 0, noffset = fdt_next_node(fit, images_noffset, &ndepth); (noffset >= 0) && (ndepth > 0); noffset = fdt_next_node(fit, noffset, &ndepth)) { if (ndepth == 1) { /* * Direct child node of the images parent node, * i.e. component image node. */ if (params->pflag == count) { printf("Extracted:\n%s Image %u (%s)\n", p, count, fit_get_name(fit, noffset, NULL)); fit_image_print(fit, noffset, p); return fit_image_extract(fit, noffset, params->outfile); } count++; } } return 0; } static int fit_check_params(struct image_tool_params *params) { if (params->auto_fit) return 0; return ((params->dflag && params->fflag) || (params->fflag && params->lflag) || (params->lflag && params->dflag)); } U_BOOT_IMAGE_TYPE( fitimage, "FIT Image support", sizeof(struct legacy_img_hdr), (void *)&header, fit_check_params, fit_verify_header, fit_print_header, NULL, fit_extract_contents, fit_check_image_types, fit_handle_file, NULL /* FIT images use DTB header */ );