355 lines
6.9 KiB
C
355 lines
6.9 KiB
C
/*
|
|
* Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation.
|
|
*
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <unistd.h> /* for unlink() */
|
|
#include <libgen.h>
|
|
#include <getopt.h> /* for getopt() */
|
|
#include <stdarg.h>
|
|
#include <errno.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include "cyg_crc.h"
|
|
|
|
#include <arpa/inet.h>
|
|
#include <netinet/in.h>
|
|
|
|
#define IH_MAGIC 0x27051956 /* Image Magic Number */
|
|
#define IH_NMLEN 32 /* Image Name Length */
|
|
|
|
#define UM_MAGIC 0x55525F46
|
|
#define UM_HEADER_LEN 12
|
|
|
|
/*
|
|
* all data in network byte order (aka natural aka bigendian)
|
|
*/
|
|
struct u_media_header {
|
|
uint32_t ih_magic; /* Image Header Magic Number */
|
|
uint32_t ih_hcrc; /* Image Header CRC Checksum */
|
|
uint32_t ih_time; /* Image Creation Timestamp */
|
|
uint32_t ih_size; /* Image Data Size */
|
|
uint32_t ih_load; /* Data Load Address */
|
|
uint32_t ih_ep; /* Entry Point Address */
|
|
uint32_t ih_dcrc; /* Image Data CRC Checksum */
|
|
uint8_t ih_os; /* Operating System */
|
|
uint8_t ih_arch; /* CPU architecture */
|
|
uint8_t ih_type; /* Image Type */
|
|
uint8_t ih_comp; /* Compression Type */
|
|
uint8_t ih_name[IH_NMLEN - UM_HEADER_LEN]; /* Image Name */
|
|
|
|
uint32_t ih_UMedia_magic; /* U-Media magic number */
|
|
uint32_t ih_UMedia_boardID; /* U-Media board ID */
|
|
uint8_t ih_UMedia_imageType; /* U-Media image type */
|
|
uint8_t ih_UMedia_LoadDefault; /* U-Media load to factory default setting */
|
|
uint8_t ih_UMedia_temp1; /* U-Media didn't use this tag */
|
|
uint8_t ih_UMedia_temp2; /* U-Media didn't use this tag */
|
|
} __attribute__ ((packed));
|
|
|
|
struct if_info {
|
|
char *file_name; /* name of the file */
|
|
uint32_t file_size; /* length of the file */
|
|
};
|
|
|
|
static char *progname;
|
|
static char *ofname;
|
|
static struct if_info if_info;
|
|
static int factory_defaults;
|
|
static uint32_t board_id;
|
|
static uint8_t image_type;
|
|
|
|
/*
|
|
* Message macros
|
|
*/
|
|
#define ERR(fmt, ...) do { \
|
|
fflush(0); \
|
|
fprintf(stderr, "[%s] *** error: " fmt "\n", \
|
|
progname, ## __VA_ARGS__ ); \
|
|
} while (0)
|
|
|
|
#define ERRS(fmt, ...) do { \
|
|
int save = errno; \
|
|
fflush(0); \
|
|
fprintf(stderr, "[%s] *** error: " fmt " (%s)\n", \
|
|
progname, ## __VA_ARGS__, strerror(save)); \
|
|
} while (0)
|
|
|
|
#define DBG(fmt, ...) do { \
|
|
fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
|
|
} while (0)
|
|
|
|
static void usage(int status)
|
|
{
|
|
FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
|
|
|
|
fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
|
|
fprintf(stream,
|
|
"\n"
|
|
"Options:\n"
|
|
" -B <board_id> set board ID to <board_id>\n"
|
|
" -i <file> read input from the file <file>\n"
|
|
" -F load factory defaults\n"
|
|
" -o <file> write output to the file <file>\n"
|
|
" -T <type> set image type to <type>\n"
|
|
" -h show this screen\n"
|
|
);
|
|
|
|
exit(status);
|
|
}
|
|
|
|
static int str2u32(char *arg, uint32_t *val)
|
|
{
|
|
char *err = NULL;
|
|
uint32_t t;
|
|
|
|
errno=0;
|
|
t = strtoul(arg, &err, 0);
|
|
if (errno || (err==arg) || ((err != NULL) && *err)) {
|
|
return -1;
|
|
}
|
|
|
|
*val = t;
|
|
return 0;
|
|
}
|
|
|
|
static int str2u8(char *arg, uint8_t *val)
|
|
{
|
|
char *err = NULL;
|
|
uint32_t t;
|
|
|
|
errno=0;
|
|
t = strtoul(arg, &err, 0);
|
|
if (errno || (err==arg) || ((err != NULL) && *err)) {
|
|
return -1;
|
|
}
|
|
|
|
if (t > 255)
|
|
return -1;
|
|
|
|
*val = t;
|
|
return 0;
|
|
}
|
|
|
|
static int get_file_stat(struct if_info *fdata)
|
|
{
|
|
struct stat st;
|
|
int res;
|
|
|
|
if (fdata->file_name == NULL)
|
|
return 0;
|
|
|
|
res = stat(fdata->file_name, &st);
|
|
if (res){
|
|
ERRS("stat failed on %s", fdata->file_name);
|
|
return res;
|
|
}
|
|
|
|
fdata->file_size = st.st_size;
|
|
return 0;
|
|
}
|
|
|
|
static int read_to_buf(struct if_info *fdata, char *buf)
|
|
{
|
|
FILE *f;
|
|
int ret = EXIT_FAILURE;
|
|
|
|
f = fopen(fdata->file_name, "r");
|
|
if (f == NULL) {
|
|
ERRS("could not open \"%s\" for reading", fdata->file_name);
|
|
goto out;
|
|
}
|
|
|
|
errno = 0;
|
|
fread(buf, fdata->file_size, 1, f);
|
|
if (errno != 0) {
|
|
ERRS("unable to read from file \"%s\"", fdata->file_name);
|
|
goto out_close;
|
|
}
|
|
|
|
ret = EXIT_SUCCESS;
|
|
|
|
out_close:
|
|
fclose(f);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int check_options(void)
|
|
{
|
|
int ret;
|
|
|
|
if (ofname == NULL) {
|
|
ERR("no %s specified", "output file");
|
|
return -1;
|
|
}
|
|
|
|
if (if_info.file_name == NULL) {
|
|
ERR("no %s specified", "input file");
|
|
return -1;
|
|
}
|
|
|
|
ret = get_file_stat(&if_info);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int write_fw(char *data, int len)
|
|
{
|
|
FILE *f;
|
|
int ret = EXIT_FAILURE;
|
|
|
|
f = fopen(ofname, "w");
|
|
if (f == NULL) {
|
|
ERRS("could not open \"%s\" for writing", ofname);
|
|
goto out;
|
|
}
|
|
|
|
errno = 0;
|
|
fwrite(data, len, 1, f);
|
|
if (errno) {
|
|
ERRS("unable to write output file");
|
|
goto out_flush;
|
|
}
|
|
|
|
ret = EXIT_SUCCESS;
|
|
|
|
out_flush:
|
|
fflush(f);
|
|
fclose(f);
|
|
if (ret != EXIT_SUCCESS) {
|
|
unlink(ofname);
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int fix_header(void)
|
|
{
|
|
int buflen;
|
|
char *buf;
|
|
uint32_t crc, crc_orig;
|
|
struct u_media_header *hdr;
|
|
int ret = EXIT_FAILURE;
|
|
|
|
buflen = if_info.file_size;
|
|
if (buflen < sizeof(*hdr)) {
|
|
ERR("invalid input file\n");
|
|
return ret;
|
|
}
|
|
|
|
buf = malloc(buflen);
|
|
if (!buf) {
|
|
ERR("no memory for buffer\n");
|
|
goto out;
|
|
}
|
|
|
|
ret = read_to_buf(&if_info, buf);
|
|
if (ret)
|
|
goto out_free_buf;
|
|
|
|
hdr = (struct u_media_header *) buf;
|
|
if (ntohl(hdr->ih_magic) != IH_MAGIC) {
|
|
ERR("invalid input file, bad magic\n");
|
|
goto out_free_buf;
|
|
}
|
|
|
|
/* verify header CRC */
|
|
crc_orig = ntohl(hdr->ih_hcrc);
|
|
hdr->ih_hcrc = 0;
|
|
crc = cyg_ether_crc32((unsigned char *)hdr, sizeof(*hdr));
|
|
if (crc != crc_orig) {
|
|
ERR("invalid input file, bad header CRC\n");
|
|
goto out_free_buf;
|
|
}
|
|
|
|
hdr->ih_name[IH_NMLEN - UM_HEADER_LEN - 1] = '\0';
|
|
|
|
/* set U-Media specific fields */
|
|
hdr->ih_UMedia_magic = htonl(UM_MAGIC);
|
|
hdr->ih_UMedia_boardID = htonl(board_id);
|
|
hdr->ih_UMedia_imageType = image_type;
|
|
hdr->ih_UMedia_LoadDefault = (factory_defaults) ? 1 : 0;
|
|
|
|
/* update header CRC */
|
|
crc = cyg_ether_crc32((unsigned char *)hdr, sizeof(*hdr));
|
|
hdr->ih_hcrc = htonl(crc);
|
|
|
|
ret = write_fw(buf, buflen);
|
|
if (ret)
|
|
goto out_free_buf;
|
|
|
|
DBG("U-Media header fixed in \"%s\"", ofname);
|
|
|
|
ret = EXIT_SUCCESS;
|
|
|
|
out_free_buf:
|
|
free(buf);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int ret = EXIT_FAILURE;
|
|
|
|
progname = basename(argv[0]);
|
|
|
|
while (1) {
|
|
int c;
|
|
|
|
c = getopt(argc, argv, "B:Fi:o:T:h");
|
|
if (c == -1)
|
|
break;
|
|
|
|
switch (c) {
|
|
case 'B':
|
|
if (str2u32(optarg, &board_id)) {
|
|
ERR("%s is invalid '%s'",
|
|
"board ID", optarg);
|
|
goto out;
|
|
}
|
|
break;
|
|
case 'T':
|
|
if (str2u8(optarg, &image_type)) {
|
|
ERR("%s is invalid '%s'",
|
|
"image type", optarg);
|
|
goto out;
|
|
}
|
|
break;
|
|
case 'F':
|
|
factory_defaults = 1;
|
|
break;
|
|
case 'i':
|
|
if_info.file_name = optarg;
|
|
break;
|
|
case 'o':
|
|
ofname = optarg;
|
|
break;
|
|
case 'h':
|
|
usage(EXIT_SUCCESS);
|
|
break;
|
|
default:
|
|
usage(EXIT_FAILURE);
|
|
break;
|
|
}
|
|
}
|
|
|
|
ret = check_options();
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = fix_header();
|
|
|
|
out:
|
|
return ret;
|
|
}
|