diff options
| -rw-r--r-- | flash_unlock.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/flash_unlock.c b/flash_unlock.c index 648dc4f..3969453 100644 --- a/flash_unlock.c +++ b/flash_unlock.c @@ -21,13 +21,14 @@ int main(int argc, char *argv[]) int fd; struct mtd_info_user mtdInfo; struct erase_info_user mtdLockInfo; + int count; /* * Parse command line options */ - if(argc != 2) + if(argc < 2) { - fprintf(stderr, "USAGE: %s <mtd device>\n", argv[0]); + fprintf(stderr, "USAGE: %s <mtd device> <offset in hex> <block count in decimal number>\n", argv[0]); exit(1); } else if(strncmp(argv[1], "/dev/mtd", 8) != 0) @@ -50,8 +51,18 @@ int main(int argc, char *argv[]) exit(1); } - mtdLockInfo.start = 0; - mtdLockInfo.length = mtdInfo.size; + if (argc > 2) + mtdLockInfo.start = strtol(argv[2], NULL, 0); + else + mtdLockInfo.start = 0; + + if (argc > 3) { + count = strtol(argv[3], NULL, 0); + mtdLockInfo.length = mtdInfo.erasesize * count; + } else { + mtdLockInfo.length = mtdInfo.size - mtdInfo.erasesize; + } + if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) { fprintf(stderr, "Could not unlock MTD device: %s\n", argv[1]); @@ -61,4 +72,3 @@ int main(int argc, char *argv[]) return 0; } - |