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/*
* FILE flash_unlock.c
*
* This utility unlock all sectors of flash device.
*
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <time.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <string.h>
#include <mtd/mtd-user.h>
int main(int argc, char *argv[])
{
int fd;
struct mtd_info_user mtdInfo;
struct erase_info_user mtdLockInfo;
/*
* Parse command line options
*/
if(argc != 2)
{
fprintf(stderr, "USAGE: %s <mtd device>\n", argv[0]);
exit(1);
}
else if(strncmp(argv[1], "/dev/mtd", 8) != 0)
{
fprintf(stderr, "'%s' is not a MTD device. Must specify mtd device: /dev/mtd?\n", argv[1]);
exit(1);
}
fd = open(argv[1], O_RDWR);
if(fd < 0)
{
fprintf(stderr, "Could not open mtd device: %s\n", argv[1]);
exit(1);
}
if(ioctl(fd, MEMGETINFO, &mtdInfo))
{
fprintf(stderr, "Could not get MTD device info from %s\n", argv[1]);
close(fd);
exit(1);
}
mtdLockInfo.start = 0;
mtdLockInfo.length = mtdInfo.size;
if(ioctl(fd, MEMUNLOCK, &mtdLockInfo))
{
fprintf(stderr, "Could not unlock MTD device: %s\n", argv[1]);
close(fd);
exit(1);
}
return 0;
}
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