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/*
* signGP.c
* Read the x-load.bin file and write out the x-load.bin.ift file.
* The signed image is the original pre-pended with the size of the image
* and the load address. If not entered on command line, file name is
* assumed to be x-load.bin in current directory and load address is
* 0x40200800. */
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <string.h>
#include <malloc.h>
#define SIGNATURE (('S' << 24) | ('g' << 16) | ('n' << 8) | 'P')
int main(int argc, char *argv[])
{
int i;
size_t ret;
char ifname[FILENAME_MAX], ofname[FILENAME_MAX], ch;
FILE *ifile, *ofile;
unsigned long loadaddr, len;
struct stat sinfo;
unsigned long signature = SIGNATURE;
/* Default to x-load.bin and 0x40200800. */
strcpy(ifname, "x-load.bin");
loadaddr = 0x40200800;
if ((argc == 2) || (argc == 3))
strcpy(ifname, argv[1]);
if (argc == 3)
loadaddr = strtoul(argv[2], NULL, 16);
/* Form the output file name. */
strcpy(ofname, ifname);
strcat(ofname, ".ift");
/* Open the input file. */
ifile = fopen(ifname, "rb");
if (ifile == NULL) {
printf("Cannot open %s\n", ifname);
exit(0);
}
/* Get file length. */
stat(ifname, &sinfo);
len = sinfo.st_size;
/* Open the output file and write it. */
ofile = fopen(ofname, "wb");
if (ofile == NULL) {
printf("Cannot open %s\n", ofname);
fclose(ifile);
exit(0);
}
/* Pad 1 sector of zeroes.
* ch = 0x00;
* for (i=0; i<0x200; i++)
* fwrite(&ch, 1, 1, ofile); */
fwrite(&signature, 1, 4, ofile);
fwrite(&len, 1, 4, ofile);
fwrite(&loadaddr, 1, 4, ofile);
for (i = 0; i < len; i++) {
ret = fread(&ch, 1, 1, ifile);
if (ret != 1) {
fprintf(stderr, "fread didn't return 1!\n");
exit(-1);
}
fwrite(&ch, 1, 1, ofile);
}
fclose(ifile);
fclose(ofile);
return 0;
}
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