diff options
Diffstat (limited to 'tools')
-rw-r--r-- | tools/fit_image.c | 93 |
1 files changed, 92 insertions, 1 deletions
diff --git a/tools/fit_image.c b/tools/fit_image.c index 5712842..eb2a25e 100644 --- a/tools/fit_image.c +++ b/tools/fit_image.c @@ -155,6 +155,97 @@ err_system: 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; + + /* get the "data" property of component at offset "image_noffset" */ + fit_image_get_data(fit, image_noffset, &file_data, &file_size); + + /* 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; + + if (!fit_check_format(fit)) { + printf("Bad FIT image format\n"); + return -1; + } + + /* 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) { return ((params->dflag && (params->fflag || params->lflag)) || @@ -171,7 +262,7 @@ U_BOOT_IMAGE_TYPE( fit_verify_header, fit_print_contents, NULL, - NULL, + fit_extract_contents, fit_check_image_types, fit_handle_file, NULL /* FIT images use DTB header */ |