diff options
Diffstat (limited to 'flash_unlock.c')
-rw-r--r-- | flash_unlock.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/flash_unlock.c b/flash_unlock.c new file mode 100644 index 0000000..f4d7e20 --- /dev/null +++ b/flash_unlock.c @@ -0,0 +1,64 @@ +/* + * 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; +} + |