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/*
* Linksys e8350 v1 firmware header generator
*/
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <stdarg.h>
#include <getopt.h>
#include <time.h>
#include <sys/time.h>
#include "cyg_crc.h"
#define AC2350 20
#define CYBERTAN_VERSION "v1.0.03"
#define SERIAL_NUMBER "003"
#define MINOR_VERSION ""
#define BUILD_KEYWORD " B"
#define BUILD_NUMBER SERIAL_NUMBER
#define BETA_VERSION " "
#define CYBERTAN_UBOOT_VERSION "v1.0"
/* add for AC2350 F/W header */
#define FWHDR_MAGIC_STR "CHDR"
#define FWHDR_MAGIC 0X52444843
struct cbt_fw_header {
unsigned int magic; /* "CHDR" */
unsigned int len; /* Length of file including header */
unsigned int crc32; /* 32-bit CRC */
unsigned int res;
};
#define MAX_BUF 1024
/* Initial CRC32 checksum value */
#define CRC32_INIT_VALUE 0xffffffff
int fd, fd_w;
void die(const char * str, ...)
{
va_list args;
va_start(args, str);
vfprintf(stderr, str, args);
fputc('\n', stderr);
exit(1);
}
int fill_null0(int size)
{
unsigned char buf[1];
int i;
fprintf(stderr,"Fill null\n");
buf[0] = 0xff;
for (i = 0 ; i < size; i++)
if (write(fd_w, buf, 1) != 1)
return 0;
return 1;
}
long file_open(const char *name)
{
struct stat sb;
if ((fd = open(name, O_RDONLY, 0)) < 0)
die("Unable to open `%s' : %m", name);
if (fstat (fd, &sb))
die("Unable to stat `%s' : %m", name);
return sb.st_size;
}
void usage(void)
{
die("Usage: addfwhdr [-i|--input] sysupgrade.o [-o|--output] code.bin\n");
}
int main(int argc, char ** argv)
{
char *input_file = NULL, *output_file = NULL;
extern int optind, opterr, optopt;
unsigned int input_size,c;
int option_index = 0;
extern char *optarg;
char *buf = NULL;
int garbage = 0;
int opt;
struct cbt_fw_header *fwhdr;
unsigned int crc;
static struct option long_options[] = {
{"input", 1, 0, 'i'},
{"output", 1, 0, 'o'},
{"garbage", 0, 0, 'g'},
{0, 0, 0, 0}
};
while(true) {
opt = getopt_long(argc, argv, "i:o:g",long_options, &option_index);
if (opt == -1)
break;
switch(opt){
case 'h' :
usage();
break;
case 'i' :
input_file = optarg;
printf("input file is [%s]\n", input_file);
break;
case 'o' :
output_file = optarg;
printf("output file is [%s]\n", output_file);
break;
case 'g' :
garbage = 1;
break;
default :
usage();
}
}
if (!input_file || !output_file) {
printf("You must specify the input and output file!\n");
usage();
}
unlink(output_file);
if ((fd_w = open(output_file, O_RDWR|O_CREAT, S_IREAD | S_IWRITE)) < 0)
die("Unable to open `%s' : %m", output_file);
printf("\n---------- add fw header --------\n");
fwhdr = calloc(1, sizeof(struct cbt_fw_header));
memcpy((char *)&fwhdr->magic, FWHDR_MAGIC_STR, sizeof(fwhdr->magic));
input_size = file_open(input_file);
if (!(buf = malloc(input_size))){
perror("malloc");
goto fail;
}
c = read(fd, buf, input_size);
fwhdr->len = input_size + sizeof(struct cbt_fw_header);
fwhdr->res = fwhdr->res | 0x1;
crc = cyg_crc32_accumulate(CRC32_INIT_VALUE, (uint8_t *)&fwhdr->res, 4);
crc = cyg_crc32_accumulate(crc, (uint8_t *)&buf[0], input_size);
fwhdr->crc32 = crc;
/* write code pattern header */
write(fd_w, fwhdr, sizeof(struct cbt_fw_header));
if (write(fd_w, buf, c) != c)
die("Write call failed!\n");
fail:
free(fwhdr);
if (buf)
free(buf);
close(fd);
close(fd_w);
return 0;
}
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