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![Kim Phillips](/assets/img/avatar_default.png)
and, if including libfdt.h which includes libfdt_env.h in the correct order, don't include fdt.h before libfdt.h. this is needed to get the fdt type definitions set from the project environment before fdt.h uses them. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Cc: Jerry Van Baren <gvb.uboot@gmail.com>
270 lines
6.0 KiB
C
270 lines
6.0 KiB
C
/*
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* (C) Copyright 2009 Marco Stornelli
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <asm/page.h>
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#ifdef MTD_OLD
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#include <stdint.h>
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#include <linux/mtd/mtd.h>
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#else
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#define __user /* nothing */
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#include <mtd/mtd-user.h>
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#endif
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#include <sha1.h>
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#include <libfdt.h>
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#include <fdt_support.h>
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#include <image.h>
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#define MIN(a, b) (((a) < (b)) ? (a) : (b))
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extern unsigned long crc32(unsigned long crc, const char *buf, unsigned int len);
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static void usage(void);
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static int image_verify_header(char *ptr, int fd);
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static int flash_bad_block(int fd, uint8_t mtd_type, loff_t start);
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char *cmdname;
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char *devicefile;
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unsigned int sectorcount = 0;
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int sflag = 0;
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unsigned int sectoroffset = 0;
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unsigned int sectorsize = 0;
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int cflag = 0;
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int main (int argc, char **argv)
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{
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int fd = -1, err = 0, readbyte = 0, j;
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struct mtd_info_user mtdinfo;
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char buf[sizeof(image_header_t)];
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int found = 0;
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cmdname = *argv;
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while (--argc > 0 && **++argv == '-') {
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while (*++*argv) {
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switch (**argv) {
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case 'c':
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if (--argc <= 0)
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usage ();
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sectorcount = (unsigned int)atoi(*++argv);
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cflag = 1;
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goto NXTARG;
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case 'o':
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if (--argc <= 0)
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usage ();
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sectoroffset = (unsigned int)atoi(*++argv);
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goto NXTARG;
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case 's':
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if (--argc <= 0)
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usage ();
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sectorsize = (unsigned int)atoi(*++argv);
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sflag = 1;
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goto NXTARG;
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default:
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usage ();
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}
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}
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NXTARG: ;
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}
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if (argc != 1 || cflag == 0 || sflag == 0)
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usage();
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devicefile = *argv;
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fd = open(devicefile, O_RDONLY);
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if (fd < 0) {
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fprintf (stderr, "%s: Can't open %s: %s\n",
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cmdname, devicefile, strerror(errno));
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exit(EXIT_FAILURE);
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}
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err = ioctl(fd, MEMGETINFO, &mtdinfo);
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if (err < 0) {
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fprintf(stderr, "%s: Cannot get MTD information: %s\n",cmdname,
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strerror(errno));
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exit(EXIT_FAILURE);
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}
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if (mtdinfo.type != MTD_NORFLASH && mtdinfo.type != MTD_NANDFLASH) {
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fprintf(stderr, "%s: Unsupported flash type %u\n",
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cmdname, mtdinfo.type);
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exit(EXIT_FAILURE);
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}
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if (sectorsize * sectorcount != mtdinfo.size) {
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fprintf(stderr, "%s: Partition size (%d) incompatible with "
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"sector size and count\n", cmdname, mtdinfo.size);
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exit(EXIT_FAILURE);
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}
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if (sectorsize * sectoroffset >= mtdinfo.size) {
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fprintf(stderr, "%s: Partition size (%d) incompatible with "
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"sector offset given\n", cmdname, mtdinfo.size);
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exit(EXIT_FAILURE);
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}
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if (sectoroffset > sectorcount - 1) {
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fprintf(stderr, "%s: Sector offset cannot be grater than "
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"sector count minus one\n", cmdname);
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exit(EXIT_FAILURE);
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}
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printf("Searching....\n");
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for (j = sectoroffset; j < sectorcount; ++j) {
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if (lseek(fd, j*sectorsize, SEEK_SET) != j*sectorsize) {
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fprintf(stderr, "%s: lseek failure: %s\n",
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cmdname, strerror(errno));
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exit(EXIT_FAILURE);
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}
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err = flash_bad_block(fd, mtdinfo.type, j*sectorsize);
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if (err < 0)
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exit(EXIT_FAILURE);
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if (err)
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continue; /* Skip and jump to next */
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readbyte = read(fd, buf, sizeof(image_header_t));
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if (readbyte != sizeof(image_header_t)) {
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fprintf(stderr, "%s: Can't read from device: %s\n",
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cmdname, strerror(errno));
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exit(EXIT_FAILURE);
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}
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if (fdt_check_header(buf)) {
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/* old-style image */
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if (image_verify_header(buf, fd)) {
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found = 1;
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image_print_contents((image_header_t *)buf);
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}
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} else {
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/* FIT image */
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fit_print_contents(buf);
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}
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}
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close(fd);
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if(!found)
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printf("No images found\n");
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exit(EXIT_SUCCESS);
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}
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void usage()
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{
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fprintf (stderr, "Usage:\n"
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" %s [-o offset] -s size -c count device\n"
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" -o ==> number of sectors to use as offset\n"
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" -c ==> number of sectors\n"
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" -s ==> size of sectors (byte)\n",
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cmdname);
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exit(EXIT_FAILURE);
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}
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static int image_verify_header(char *ptr, int fd)
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{
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int len, nread;
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char *data;
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uint32_t checksum;
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image_header_t *hdr = (image_header_t *)ptr;
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char buf[PAGE_SIZE];
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if (image_get_magic(hdr) != IH_MAGIC)
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return 0;
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data = (char *)hdr;
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len = image_get_header_size();
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checksum = image_get_hcrc(hdr);
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hdr->ih_hcrc = htonl(0); /* clear for re-calculation */
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if (crc32(0, data, len) != checksum) {
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fprintf(stderr,
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"%s: Maybe image found but it has bad header checksum!\n",
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cmdname);
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return 0;
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}
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len = image_get_size(hdr);
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checksum = 0;
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while (len > 0) {
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nread = read(fd, buf, MIN(len,PAGE_SIZE));
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if (nread != MIN(len,PAGE_SIZE)) {
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fprintf(stderr,
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"%s: Error while reading: %s\n",
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cmdname, strerror(errno));
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exit(EXIT_FAILURE);
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}
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checksum = crc32(checksum, buf, nread);
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len -= nread;
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}
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if (checksum != image_get_dcrc(hdr)) {
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fprintf (stderr,
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"%s: Maybe image found but it has corrupted data!\n",
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cmdname);
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return 0;
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}
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return 1;
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}
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/*
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* Test for bad block on NAND, just returns 0 on NOR, on NAND:
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* 0 - block is good
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* > 0 - block is bad
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* < 0 - failed to test
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*/
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static int flash_bad_block(int fd, uint8_t mtd_type, loff_t start)
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{
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if (mtd_type == MTD_NANDFLASH) {
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int badblock = ioctl(fd, MEMGETBADBLOCK, &start);
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if (badblock < 0) {
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fprintf(stderr,"%s: Cannot read bad block mark: %s\n",
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cmdname, strerror(errno));
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return badblock;
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}
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if (badblock) {
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return badblock;
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}
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}
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return 0;
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}
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