diff options
Diffstat (limited to 'flash_unlock.c')
| -rw-r--r-- | flash_unlock.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/flash_unlock.c b/flash_unlock.c deleted file mode 100644 index f51870a..0000000 --- a/flash_unlock.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * flash_{lock,unlock} - * - * utilities for locking/unlocking sectors of flash devices - */ - -enum flash_lock_request { - REQUEST_LOCK, - REQUEST_UNLOCK, - REQUEST_ISLOCKED, -}; - -#ifndef PROGRAM_NAME -#define PROGRAM_NAME "flash_unlock" -#define DEFAULT_REQUEST REQUEST_UNLOCK -#else -#define DEFAULT_REQUEST REQUEST_LOCK -#endif - -#include <getopt.h> -#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 "common.h" -#include <mtd/mtd-user.h> - -static const char *flash_msg[] = { - [ REQUEST_LOCK ] = "lock", - [ REQUEST_UNLOCK ] = "unlock", - [ REQUEST_ISLOCKED ] = "check lock status", -}; - -static void usage(int status) -{ - fprintf(status ? stderr : stdout, - "Utility to lock, unlock, or check the lock status of the flash.\n" - "Default action: %s\n" - "\n" - "Usage: %s [options] [--] <mtd device> [offset [block count]]\n" - "\n" - "Options:\n" - " -h --help Display this help and exit\n" - " --version Display version information and exit\n" - " -i --islocked Check if flash region is locked\n" - " -l --lock Lock a region of flash\n" - " -u --unlock Unlock a region of flash\n" - "\n" - "If offset is not specified, it defaults to 0.\n" - "If block count is not specified, it defaults to all blocks.\n" - "A block count of -1 means all blocks.\n", - flash_msg[DEFAULT_REQUEST], - PROGRAM_NAME); - exit(status); -} - -static const char short_opts[] = "hilu"; -static const struct option long_opts[] = { - { "help", no_argument, 0, 'h' }, - { "islocked", no_argument, 0, 'i' }, - { "lock", no_argument, 0, 'l' }, - { "unlock", no_argument, 0, 'u' }, - { "version", no_argument, 0, 'v' }, - { NULL, 0, 0, 0 }, -}; - -/* Program arguments */ -static const char *dev, *offs_s, *count_s; -static enum flash_lock_request req = DEFAULT_REQUEST; - -static void process_args(int argc, char *argv[]) -{ - int arg_idx; - int req_set = 0; - - for (;;) { - int c; - - c = getopt_long(argc, argv, short_opts, long_opts, NULL); - if (c == EOF) - break; - - switch (c) { - case 'h': - usage(0); - break; - case 'i': - req = REQUEST_ISLOCKED; - req_set++; - break; - case 'l': - req = REQUEST_LOCK; - req_set++; - break; - case 'u': - req = REQUEST_UNLOCK; - req_set++; - break; - case 'v': - common_print_version(); - exit(0); - default: - usage(1); - break; - } - } - - if (req_set > 1) { - errmsg("cannot specify more than one lock/unlock/islocked option"); - usage(1); - } - - arg_idx = optind; - - /* Sanity checks */ - if (argc - arg_idx < 1) { - errmsg("too few arguments"); - usage(1); - } else if (argc - arg_idx > 3) { - errmsg("too many arguments"); - usage(1); - } - - /* First non-option argument */ - dev = argv[arg_idx++]; - - /* Second non-option argument */ - if (arg_idx < argc) - offs_s = argv[arg_idx++]; - else - offs_s = NULL; - - /* Third non-option argument */ - if (arg_idx < argc) - count_s = argv[arg_idx++]; - else - count_s = NULL; - -} - -int main(int argc, char *argv[]) -{ - int fd, request; - struct mtd_info_user mtdInfo; - struct erase_info_user mtdLockInfo; - long count; - int ret = 0; - - process_args(argc, argv); - - /* Get the device info to compare to command line sizes */ - fd = open(dev, O_RDWR); - if (fd < 0) - sys_errmsg_die("could not open: %s", dev); - - if (ioctl(fd, MEMGETINFO, &mtdInfo)) - sys_errmsg_die("could not get mtd info: %s", dev); - - /* Make sure user options are valid */ - if (offs_s) { - mtdLockInfo.start = simple_strtol(offs_s, &ret); - if (ret) - errmsg_die("bad offset"); - } else { - mtdLockInfo.start = 0; - } - if (mtdLockInfo.start >= mtdInfo.size) - errmsg_die("%#x is beyond device size %#x", - mtdLockInfo.start, mtdInfo.size); - - if (count_s) { - count = simple_strtol(count_s, &ret); - if (ret) - errmsg_die("bad count"); - if (count == -1) - mtdLockInfo.length = mtdInfo.size; - else - mtdLockInfo.length = mtdInfo.erasesize * count; - } else { - mtdLockInfo.length = mtdInfo.size; - } - if (mtdLockInfo.start + mtdLockInfo.length > mtdInfo.size) - errmsg_die("range is more than device supports: %#x + %#x > %#x", - mtdLockInfo.start, mtdLockInfo.length, mtdInfo.size); - - /* Finally do the operation */ - switch (req) { - case REQUEST_LOCK: - request = MEMLOCK; - break; - case REQUEST_UNLOCK: - request = MEMUNLOCK; - break; - case REQUEST_ISLOCKED: - request = MEMISLOCKED; - break; - default: - errmsg_die("unknown request type: %d", req); - break; - } - ret = ioctl(fd, request, &mtdLockInfo); - if (ret < 0) - sys_errmsg_die("could not %s device: %s\n", - flash_msg[req], dev); - - if (req == REQUEST_ISLOCKED) { - printf("Device: %s\n", dev); - printf("Start: %#0x\n", mtdLockInfo.start); - printf("Len: %#0x\n", mtdLockInfo.length); - printf("Lock status: %s\n", ret ? "locked" : "unlocked"); - printf("Return code: %d\n", ret); - } - - return 0; -} |