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![Masahiro Yamada](/assets/img/avatar_default.png)
Becuase fdt_check_header function takes (const void *) type argument, the argument should be passed to it without being casted to (char *). Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
210 lines
5.2 KiB
C
210 lines
5.2 KiB
C
/*
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* (C) Copyright 2008 Semihalf
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*
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* (C) Copyright 2000-2004
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* DENX Software Engineering
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* Wolfgang Denk, wd@denx.de
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*
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* Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
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* FIT image specific code abstracted from mkimage.c
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* some functions added to address abstraction
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*
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* All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include "mkimage.h"
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#include <image.h>
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#include <u-boot/crc.h>
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static image_header_t header;
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static int fit_verify_header (unsigned char *ptr, int image_size,
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struct mkimage_params *params)
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{
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return fdt_check_header(ptr);
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}
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static int fit_check_image_types (uint8_t type)
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{
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if (type == IH_TYPE_FLATDT)
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return EXIT_SUCCESS;
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else
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return EXIT_FAILURE;
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}
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int mmap_fdt(struct mkimage_params *params, const char *fname, void **blobp,
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struct stat *sbuf)
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{
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void *ptr;
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int fd;
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/* Load FIT blob into memory (we need to write hashes/signatures) */
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fd = open(fname, O_RDWR | O_BINARY);
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if (fd < 0) {
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fprintf(stderr, "%s: Can't open %s: %s\n",
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params->cmdname, fname, strerror(errno));
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unlink(fname);
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return -1;
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}
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if (fstat(fd, sbuf) < 0) {
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fprintf(stderr, "%s: Can't stat %s: %s\n",
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params->cmdname, fname, strerror(errno));
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unlink(fname);
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return -1;
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}
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ptr = mmap(0, sbuf->st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
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if (ptr == MAP_FAILED) {
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fprintf(stderr, "%s: Can't read %s: %s\n",
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params->cmdname, fname, strerror(errno));
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unlink(fname);
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return -1;
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}
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/* check if ptr has a valid blob */
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if (fdt_check_header(ptr)) {
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fprintf(stderr, "%s: Invalid FIT blob\n", params->cmdname);
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unlink(fname);
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return -1;
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}
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*blobp = ptr;
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return fd;
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}
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/**
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* fit_handle_file - main FIT file processing function
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*
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* fit_handle_file() runs dtc to convert .its to .itb, includes
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* binary data, updates timestamp property and calculates hashes.
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*
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* datafile - .its file
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* imagefile - .itb file
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*
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* returns:
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* only on success, otherwise calls exit (EXIT_FAILURE);
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*/
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static int fit_handle_file (struct mkimage_params *params)
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{
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char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
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char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
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int tfd, destfd = 0;
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void *dest_blob = NULL;
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struct stat sbuf;
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void *ptr;
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off_t destfd_size = 0;
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/* Flattened Image Tree (FIT) format handling */
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debug ("FIT format handling\n");
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/* call dtc to include binary properties into the tmp file */
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if (strlen (params->imagefile) +
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strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
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fprintf (stderr, "%s: Image file name (%s) too long, "
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"can't create tmpfile",
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params->imagefile, params->cmdname);
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return (EXIT_FAILURE);
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}
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sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
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/* We either compile the source file, or use the existing FIT image */
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if (params->datafile) {
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/* dtc -I dts -O dtb -p 500 datafile > tmpfile */
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snprintf(cmd, sizeof(cmd), "%s %s %s > %s",
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MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
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debug("Trying to execute \"%s\"\n", cmd);
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} else {
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snprintf(cmd, sizeof(cmd), "cp %s %s",
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params->imagefile, tmpfile);
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}
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if (system (cmd) == -1) {
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fprintf (stderr, "%s: system(%s) failed: %s\n",
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params->cmdname, cmd, strerror(errno));
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goto err_system;
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}
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if (params->keydest) {
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destfd = mmap_fdt(params, params->keydest, &dest_blob, &sbuf);
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if (destfd < 0)
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goto err_keydest;
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destfd_size = sbuf.st_size;
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}
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tfd = mmap_fdt(params, tmpfile, &ptr, &sbuf);
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if (tfd < 0)
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goto err_mmap;
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/* set hashes for images in the blob */
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if (fit_add_verification_data(params->keydir,
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dest_blob, ptr, params->comment,
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params->require_keys)) {
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fprintf(stderr, "%s Can't add hashes to FIT blob\n",
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params->cmdname);
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goto err_add_hashes;
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}
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/* for first image creation, add a timestamp at offset 0 i.e., root */
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if (params->datafile && fit_set_timestamp(ptr, 0, sbuf.st_mtime)) {
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fprintf (stderr, "%s: Can't add image timestamp\n",
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params->cmdname);
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goto err_add_timestamp;
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}
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debug ("Added timestamp successfully\n");
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munmap ((void *)ptr, sbuf.st_size);
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close (tfd);
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if (dest_blob) {
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munmap(dest_blob, destfd_size);
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close(destfd);
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}
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if (rename (tmpfile, params->imagefile) == -1) {
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fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
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params->cmdname, tmpfile, params->imagefile,
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strerror (errno));
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unlink (tmpfile);
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unlink (params->imagefile);
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return (EXIT_FAILURE);
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}
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return (EXIT_SUCCESS);
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err_add_timestamp:
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err_add_hashes:
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munmap(ptr, sbuf.st_size);
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err_mmap:
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if (dest_blob)
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munmap(dest_blob, destfd_size);
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err_keydest:
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err_system:
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unlink(tmpfile);
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return -1;
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}
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static int fit_check_params (struct mkimage_params *params)
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{
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return ((params->dflag && (params->fflag || params->lflag)) ||
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(params->fflag && (params->dflag || params->lflag)) ||
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(params->lflag && (params->dflag || params->fflag)));
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}
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static struct image_type_params fitimage_params = {
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.name = "FIT Image support",
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.header_size = sizeof(image_header_t),
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.hdr = (void*)&header,
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.verify_header = fit_verify_header,
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.print_header = fit_print_contents,
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.check_image_type = fit_check_image_types,
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.fflag_handle = fit_handle_file,
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.set_header = NULL, /* FIT images use DTB header */
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.check_params = fit_check_params,
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};
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void init_fit_image_type (void)
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{
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mkimage_register (&fitimage_params);
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}
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