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/*
* (C) Copyright 2008 Semihalf
*
* (C) Copyright 2000-2004
* DENX Software Engineering
* Wolfgang Denk, wd@denx.de
*
* Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
* FIT image specific code abstracted from mkimage.c
* some functions added to address abstraction
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include "mkimage.h"
#include <image.h>
#include <u-boot/crc.h>
static image_header_t header;
static int fit_verify_header (unsigned char *ptr, int image_size,
struct mkimage_params *params)
{
return fdt_check_header ((void *)ptr);
}
static int fit_check_image_types (uint8_t type)
{
if (type == IH_TYPE_FLATDT)
return EXIT_SUCCESS;
else
return EXIT_FAILURE;
}
/**
* 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 mkimage_params *params)
{
char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
int tfd;
struct stat sbuf;
unsigned char *ptr;
/* 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",
params->imagefile, params->cmdname);
return (EXIT_FAILURE);
}
sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
/* dtc -I dts -O -p 200 datafile > tmpfile */
sprintf (cmd, "%s %s %s > %s",
MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
debug ("Trying to execute \"%s\"\n", cmd);
if (system (cmd) == -1) {
fprintf (stderr, "%s: system(%s) failed: %s\n",
params->cmdname, cmd, strerror(errno));
unlink (tmpfile);
return (EXIT_FAILURE);
}
/* load FIT blob into memory */
tfd = open (tmpfile, O_RDWR|O_BINARY);
if (tfd < 0) {
fprintf (stderr, "%s: Can't open %s: %s\n",
params->cmdname, tmpfile, strerror(errno));
unlink (tmpfile);
return (EXIT_FAILURE);
}
if (fstat (tfd, &sbuf) < 0) {
fprintf (stderr, "%s: Can't stat %s: %s\n",
params->cmdname, tmpfile, strerror(errno));
unlink (tmpfile);
return (EXIT_FAILURE);
}
ptr = mmap (0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED,
tfd, 0);
if (ptr == MAP_FAILED) {
fprintf (stderr, "%s: Can't read %s: %s\n",
params->cmdname, tmpfile, strerror(errno));
unlink (tmpfile);
return (EXIT_FAILURE);
}
/* check if ptr has a valid blob */
if (fdt_check_header (ptr)) {
fprintf (stderr, "%s: Invalid FIT blob\n", params->cmdname);
unlink (tmpfile);
return (EXIT_FAILURE);
}
/* set hashes for images in the blob */
if (fit_set_hashes (ptr)) {
fprintf (stderr, "%s Can't add hashes to FIT blob",
params->cmdname);
unlink (tmpfile);
return (EXIT_FAILURE);
}
/* add a timestamp at offset 0 i.e., root */
if (fit_set_timestamp (ptr, 0, sbuf.st_mtime)) {
fprintf (stderr, "%s: Can't add image timestamp\n",
params->cmdname);
unlink (tmpfile);
return (EXIT_FAILURE);
}
debug ("Added timestamp successfully\n");
munmap ((void *)ptr, sbuf.st_size);
close (tfd);
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 (params->imagefile);
return (EXIT_FAILURE);
}
return (EXIT_SUCCESS);
}
static void fit_set_header (void *ptr, struct stat *sbuf, int ifd,
struct mkimage_params *params)
{
uint32_t checksum;
image_header_t * hdr = (image_header_t *)ptr;
checksum = crc32 (0,
(const unsigned char *)(ptr +
sizeof(image_header_t)),
sbuf->st_size - sizeof(image_header_t));
/* Build new header */
image_set_magic (hdr, IH_MAGIC);
image_set_time (hdr, sbuf->st_mtime);
image_set_size (hdr, sbuf->st_size - sizeof(image_header_t));
image_set_load (hdr, params->addr);
image_set_ep (hdr, params->ep);
image_set_dcrc (hdr, checksum);
image_set_os (hdr, params->os);
image_set_arch (hdr, params->arch);
image_set_type (hdr, params->type);
image_set_comp (hdr, params->comp);
image_set_name (hdr, params->imagename);
checksum = crc32 (0, (const unsigned char *)hdr,
sizeof(image_header_t));
image_set_hcrc (hdr, checksum);
}
static int fit_check_params (struct mkimage_params *params)
{
return ((params->dflag && (params->fflag || params->lflag)) ||
(params->fflag && (params->dflag || params->lflag)) ||
(params->lflag && (params->dflag || params->fflag)));
}
static struct image_type_params fitimage_params = {
.name = "FIT Image support",
.header_size = sizeof(image_header_t),
.hdr = (void*)&header,
.verify_header = fit_verify_header,
.print_header = fit_print_contents,
.check_image_type = fit_check_image_types,
.fflag_handle = fit_handle_file,
.set_header = fit_set_header,
.check_params = fit_check_params,
};
void init_fit_image_type (void)
{
mkimage_register (&fitimage_params);
}
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