2 * (C) Copyright 2008 Semihalf
4 * (C) Copyright 2000-2004
5 * DENX Software Engineering
6 * Wolfgang Denk, wd@denx.de
8 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
9 * FIT image specific code abstracted from mkimage.c
10 * some functions added to address abstraction
12 * All rights reserved.
14 * SPDX-License-Identifier: GPL-2.0+
17 #include "imagetool.h"
18 #include "fit_common.h"
23 #include <u-boot/crc.h>
25 static image_header_t header;
27 static int fit_add_file_data(struct image_tool_params *params, size_t size_inc,
31 void *dest_blob = NULL;
32 off_t destfd_size = 0;
37 tfd = mmap_fdt(params->cmdname, tmpfile, size_inc, &ptr, &sbuf, true);
41 if (params->keydest) {
42 struct stat dest_sbuf;
44 destfd = mmap_fdt(params->cmdname, params->keydest, size_inc,
45 &dest_blob, &dest_sbuf, false);
50 destfd_size = dest_sbuf.st_size;
53 /* for first image creation, add a timestamp at offset 0 i.e., root */
55 ret = fit_set_timestamp(ptr, 0, sbuf.st_mtime);
58 ret = fit_add_verification_data(params->keydir, dest_blob, ptr,
60 params->require_keys);
64 munmap(dest_blob, destfd_size);
69 munmap(ptr, sbuf.st_size);
76 * fit_calc_size() - Calculate the approximate size of the FIT we will generate
78 static int fit_calc_size(struct image_tool_params *params)
80 struct content_info *cont;
83 size = imagetool_get_filesize(params, params->datafile);
88 for (cont = params->content_head; cont; cont = cont->next) {
89 size = imagetool_get_filesize(params, cont->fname);
93 /* Add space for properties */
94 total_size += size + 300;
97 /* Add plenty of space for headers, properties, nodes, etc. */
103 static int fdt_property_file(struct image_tool_params *params,
104 void *fdt, const char *name, const char *fname)
111 fd = open(fname, O_RDWR | O_BINARY);
113 fprintf(stderr, "%s: Can't open %s: %s\n",
114 params->cmdname, fname, strerror(errno));
118 if (fstat(fd, &sbuf) < 0) {
119 fprintf(stderr, "%s: Can't stat %s: %s\n",
120 params->cmdname, fname, strerror(errno));
124 ret = fdt_property_placeholder(fdt, "data", sbuf.st_size, &ptr);
127 ret = read(fd, ptr, sbuf.st_size);
128 if (ret != sbuf.st_size) {
129 fprintf(stderr, "%s: Can't read %s: %s\n",
130 params->cmdname, fname, strerror(errno));
140 static int fdt_property_strf(void *fdt, const char *name, const char *fmt, ...)
146 vsnprintf(str, sizeof(str), fmt, ptr);
148 return fdt_property_string(fdt, name, str);
151 static void get_basename(char *str, int size, const char *fname)
153 const char *p, *start, *end;
157 * Use the base name as the 'name' field. So for example:
159 * "arch/arm/dts/sun7i-a20-bananapro.dtb"
160 * becomes "sun7i-a20-bananapro"
162 p = strrchr(fname, '/');
163 start = p ? p + 1 : fname;
164 p = strrchr(fname, '.');
165 end = p ? p : fname + strlen(fname);
169 memcpy(str, start, len);
174 * fit_write_images() - Write out a list of images to the FIT
176 * We always include the main image (params->datafile). If there are device
177 * tree files, we include an fdt@ node for each of those too.
179 static int fit_write_images(struct image_tool_params *params, char *fdt)
181 struct content_info *cont;
182 const char *typename;
187 fdt_begin_node(fdt, "images");
189 /* First the main image */
190 typename = genimg_get_type_short_name(params->fit_image_type);
191 snprintf(str, sizeof(str), "%s@1", typename);
192 fdt_begin_node(fdt, str);
193 fdt_property_string(fdt, "description", params->imagename);
194 fdt_property_string(fdt, "type", typename);
195 fdt_property_string(fdt, "arch", genimg_get_arch_name(params->arch));
196 fdt_property_string(fdt, "os", genimg_get_os_short_name(params->os));
197 fdt_property_string(fdt, "compression",
198 genimg_get_comp_short_name(params->comp));
199 fdt_property_u32(fdt, "load", params->addr);
200 fdt_property_u32(fdt, "entry", params->ep);
203 * Put data last since it is large. SPL may only load the first part
204 * of the DT, so this way it can access all the above fields.
206 ret = fdt_property_file(params, fdt, "data", params->datafile);
211 /* Now the device tree files if available */
213 for (cont = params->content_head; cont; cont = cont->next) {
214 if (cont->type != IH_TYPE_FLATDT)
216 snprintf(str, sizeof(str), "%s@%d", FIT_FDT_PROP, ++upto);
217 fdt_begin_node(fdt, str);
219 get_basename(str, sizeof(str), cont->fname);
220 fdt_property_string(fdt, "description", str);
221 ret = fdt_property_file(params, fdt, "data", cont->fname);
224 fdt_property_string(fdt, "type", typename);
225 fdt_property_string(fdt, "arch",
226 genimg_get_arch_short_name(params->arch));
227 fdt_property_string(fdt, "compression",
228 genimg_get_comp_short_name(IH_COMP_NONE));
238 * fit_write_configs() - Write out a list of configurations to the FIT
240 * If there are device tree files, we include a configuration for each, which
241 * selects the main image (params->datafile) and its corresponding device
244 * Otherwise we just create a configuration with the main image in it.
246 static void fit_write_configs(struct image_tool_params *params, char *fdt)
248 struct content_info *cont;
249 const char *typename;
253 fdt_begin_node(fdt, "configurations");
254 fdt_property_string(fdt, "default", "conf@1");
257 for (cont = params->content_head; cont; cont = cont->next) {
258 if (cont->type != IH_TYPE_FLATDT)
260 typename = genimg_get_type_short_name(cont->type);
261 snprintf(str, sizeof(str), "conf@%d", ++upto);
262 fdt_begin_node(fdt, str);
264 get_basename(str, sizeof(str), cont->fname);
265 fdt_property_string(fdt, "description", str);
267 typename = genimg_get_type_short_name(params->fit_image_type);
268 snprintf(str, sizeof(str), "%s@1", typename);
269 fdt_property_string(fdt, typename, str);
271 snprintf(str, sizeof(str), FIT_FDT_PROP "@%d", upto);
272 fdt_property_string(fdt, FIT_FDT_PROP, str);
276 fdt_begin_node(fdt, "conf@1");
277 typename = genimg_get_type_short_name(params->fit_image_type);
278 snprintf(str, sizeof(str), "%s@1", typename);
279 fdt_property_string(fdt, typename, str);
286 static int fit_build_fdt(struct image_tool_params *params, char *fdt, int size)
290 ret = fdt_create(fdt, size);
293 fdt_finish_reservemap(fdt);
294 fdt_begin_node(fdt, "");
295 fdt_property_strf(fdt, "description",
296 "%s image with one or more FDT blobs",
297 genimg_get_type_name(params->fit_image_type));
298 fdt_property_strf(fdt, "creator", "U-Boot mkimage %s", PLAIN_VERSION);
299 fdt_property_u32(fdt, "#address-cells", 1);
300 ret = fit_write_images(params, fdt);
303 fit_write_configs(params, fdt);
305 ret = fdt_finish(fdt);
309 return fdt_totalsize(fdt);
312 static int fit_build(struct image_tool_params *params, const char *fname)
319 size = fit_calc_size(params);
324 fprintf(stderr, "%s: Out of memory (%d bytes)\n",
325 params->cmdname, size);
328 ret = fit_build_fdt(params, buf, size);
330 fprintf(stderr, "%s: Failed to build FIT image\n",
335 fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
337 fprintf(stderr, "%s: Can't open %s: %s\n",
338 params->cmdname, fname, strerror(errno));
341 ret = write(fd, buf, size);
343 fprintf(stderr, "%s: Can't write %s: %s\n",
344 params->cmdname, fname, strerror(errno));
357 * fit_handle_file - main FIT file processing function
359 * fit_handle_file() runs dtc to convert .its to .itb, includes
360 * binary data, updates timestamp property and calculates hashes.
362 * datafile - .its file
363 * imagefile - .itb file
366 * only on success, otherwise calls exit (EXIT_FAILURE);
368 static int fit_handle_file(struct image_tool_params *params)
370 char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
371 char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
375 /* Flattened Image Tree (FIT) format handling */
376 debug ("FIT format handling\n");
378 /* call dtc to include binary properties into the tmp file */
379 if (strlen (params->imagefile) +
380 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
381 fprintf (stderr, "%s: Image file name (%s) too long, "
382 "can't create tmpfile",
383 params->imagefile, params->cmdname);
384 return (EXIT_FAILURE);
386 sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
388 /* We either compile the source file, or use the existing FIT image */
389 if (params->auto_its) {
390 if (fit_build(params, tmpfile)) {
391 fprintf(stderr, "%s: failed to build FIT\n",
396 } else if (params->datafile) {
397 /* dtc -I dts -O dtb -p 500 datafile > tmpfile */
398 snprintf(cmd, sizeof(cmd), "%s %s %s > %s",
399 MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
400 debug("Trying to execute \"%s\"\n", cmd);
402 snprintf(cmd, sizeof(cmd), "cp %s %s",
403 params->imagefile, tmpfile);
405 if (*cmd && system(cmd) == -1) {
406 fprintf (stderr, "%s: system(%s) failed: %s\n",
407 params->cmdname, cmd, strerror(errno));
412 * Set hashes for images in the blob. Unfortunately we may need more
413 * space in either FDT, so keep trying until we succeed.
415 * Note: this is pretty inefficient for signing, since we must
416 * calculate the signature every time. It would be better to calculate
417 * all the data and then store it in a separate step. However, this
418 * would be considerably more complex to implement. Generally a few
419 * steps of this loop is enough to sign with several keys.
421 for (size_inc = 0; size_inc < 64 * 1024; size_inc += 1024) {
422 ret = fit_add_file_data(params, size_inc, tmpfile);
423 if (!ret || ret != -ENOSPC)
428 fprintf(stderr, "%s Can't add hashes to FIT blob\n",
433 if (rename (tmpfile, params->imagefile) == -1) {
434 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
435 params->cmdname, tmpfile, params->imagefile,
438 unlink (params->imagefile);
449 * fit_image_extract - extract a FIT component image
450 * @fit: pointer to the FIT format image header
451 * @image_noffset: offset of the component image node
452 * @file_name: name of the file to store the FIT sub-image
455 * zero in case of success or a negative value if fail.
457 static int fit_image_extract(
460 const char *file_name)
462 const void *file_data;
463 size_t file_size = 0;
465 /* get the "data" property of component at offset "image_noffset" */
466 fit_image_get_data(fit, image_noffset, &file_data, &file_size);
468 /* save the "file_data" into the file specified by "file_name" */
469 return imagetool_save_subimage(file_name, (ulong) file_data, file_size);
473 * fit_extract_contents - retrieve a sub-image component from the FIT image
474 * @ptr: pointer to the FIT format image header
475 * @params: command line parameters
478 * zero in case of success or a negative value if fail.
480 static int fit_extract_contents(void *ptr, struct image_tool_params *params)
485 const void *fit = ptr;
489 /* Indent string is defined in header image.h */
490 p = IMAGE_INDENT_STRING;
492 if (!fit_check_format(fit)) {
493 printf("Bad FIT image format\n");
497 /* Find images parent node offset */
498 images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
499 if (images_noffset < 0) {
500 printf("Can't find images parent node '%s' (%s)\n",
501 FIT_IMAGES_PATH, fdt_strerror(images_noffset));
505 /* Avoid any overrun */
506 count = fit_get_subimage_count(fit, images_noffset);
507 if ((params->pflag < 0) || (count <= params->pflag)) {
508 printf("No such component at '%d'\n", params->pflag);
512 /* Process its subnodes, extract the desired component from image */
513 for (ndepth = 0, count = 0,
514 noffset = fdt_next_node(fit, images_noffset, &ndepth);
515 (noffset >= 0) && (ndepth > 0);
516 noffset = fdt_next_node(fit, noffset, &ndepth)) {
519 * Direct child node of the images parent node,
520 * i.e. component image node.
522 if (params->pflag == count) {
523 printf("Extracted:\n%s Image %u (%s)\n", p,
524 count, fit_get_name(fit, noffset, NULL));
526 fit_image_print(fit, noffset, p);
528 return fit_image_extract(fit, noffset,
539 static int fit_check_params(struct image_tool_params *params)
541 if (params->auto_its)
543 return ((params->dflag && (params->fflag || params->lflag)) ||
544 (params->fflag && (params->dflag || params->lflag)) ||
545 (params->lflag && (params->dflag || params->fflag)));
551 sizeof(image_header_t),
557 fit_extract_contents,
558 fit_check_image_types,
560 NULL /* FIT images use DTB header */