+ 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;
+ int buf_ptr;
+ int fit_size, new_size;
+ int fd;
+ struct stat sbuf;
+ void *fdt;
+ int ret;
+ int images;
+ int node;
+
+ fd = mmap_fdt(params->cmdname, fname, 0, &fdt, &sbuf, false);
+ if (fd < 0)
+ return -EIO;
+ fit_size = fdt_totalsize(fdt);
+
+ /* Allocate space to hold the image data we will extract */
+ buf = malloc(fit_size);
+ if (!buf) {
+ ret = -ENOMEM;
+ goto err_munmap;
+ }
+ buf_ptr = 0;
+
+ 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)) {
+ const char *data;
+ int len;
+
+ data = fdt_getprop(fdt, node, "data", &len);
+ if (!data)
+ continue;
+ memcpy(buf + buf_ptr, data, len);
+ debug("Extracting data size %x\n", len);
+
+ ret = fdt_delprop(fdt, node, "data");
+ if (ret) {
+ ret = -EPERM;
+ goto err_munmap;
+ }
+ if (params->external_offset > 0) {
+ /* An external offset positions the data absolutely. */
+ fdt_setprop_u32(fdt, node, "data-position",
+ params->external_offset + buf_ptr);
+ } else {
+ fdt_setprop_u32(fdt, node, "data-offset", buf_ptr);
+ }
+ fdt_setprop_u32(fdt, node, "data-size", len);
+
+ buf_ptr += (len + 3) & ~3;
+ }
+
+ /* Pack the FDT and place the data after it */
+ fdt_pack(fdt);
+
+ debug("Size reduced from %x to %x\n", fit_size, fdt_totalsize(fdt));
+ debug("External data size %x\n", buf_ptr);
+ new_size = fdt_totalsize(fdt);
+ new_size = (new_size + 3) & ~3;
+ 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) {
+ debug("External offset %x overlaps FIT length %x",
+ 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:
+ if (buf)
+ free(buf);
+ close(fd);
+ return ret;
+}
+
+static int fit_import_data(struct image_tool_params *params, const char *fname)
+{
+ void *fdt, *old_fdt;
+ 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);
+ if (fd < 0)
+ return -EIO;
+ fit_size = fdt_totalsize(old_fdt);
+ data_base = (fit_size + 3) & ~3;
+
+ /* Allocate space to hold the new FIT */
+ size = sbuf.st_size + 16384;
+ fdt = malloc(size);
+ if (!fdt) {
+ fprintf(stderr, "%s: Failed to allocate memory (%d bytes)\n",
+ __func__, size);
+ ret = -ENOMEM;
+ goto err_has_fd;
+ }
+ 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_has_fd;
+ }
+
+ 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_has_fd;
+ }
+
+ for (node = fdt_first_subnode(fdt, images);
+ node >= 0;
+ node = fdt_next_subnode(fdt, node)) {
+ int buf_ptr;
+ int len;
+
+ buf_ptr = fdtdec_get_int(fdt, node, "data-offset", -1);
+ len = fdtdec_get_int(fdt, node, "data-size", -1);
+ if (buf_ptr == -1 || len == -1)
+ continue;
+ debug("Importing data size %x\n", len);
+
+ ret = fdt_setprop(fdt, node, "data", fdt + data_base + buf_ptr,
+ len);
+ if (ret) {
+ debug("%s: Failed to write property: %s\n", __func__,
+ fdt_strerror(ret));
+ ret = -EINVAL;
+ goto err_has_fd;
+ }
+ }
+
+ /* 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_no_fd;
+ }
+ 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_has_fd;
+ }
+
+ ret = 0;