diff options
Diffstat (limited to 'commands/wd.c')
-rw-r--r-- | commands/wd.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/commands/wd.c b/commands/wd.c new file mode 100644 index 0000000000..080bab9230 --- /dev/null +++ b/commands/wd.c @@ -0,0 +1,68 @@ +/* + * (c) 2012 Juergen Beisert <kernel@pengutronix.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <common.h> +#include <command.h> +#include <errno.h> +#include <linux/ctype.h> +#include <watchdog.h> + +/* default timeout in [sec] */ +static unsigned timeout = CONFIG_CMD_WD_DEFAULT_TIMOUT; + +static int do_wd(int argc, char *argv[]) +{ + int rc; + + if (argc > 1) { + if (isdigit(*argv[1])) { + timeout = simple_strtoul(argv[1], NULL, 0); + } else { + printf("numerical parameter expected\n"); + return 1; + } + } + + rc = watchdog_set_timeout(timeout); + if (rc < 0) { + switch (rc) { + case -EINVAL: + printf("Timeout value out of range\n"); + break; + case -ENOSYS: + printf("Watchdog cannot be disabled\n"); + break; + default: + printf("Watchdog fails: '%s'\n", strerror(-rc)); + break; + } + + return 1; + } + + return 0; +} + +BAREBOX_CMD_HELP_START(wd) +BAREBOX_CMD_HELP_USAGE("wd [<time>]\n") +BAREBOX_CMD_HELP_SHORT("enable the watchdog to bark in <time> seconds. " + "When <time> is 0, the watchdog gets disabled,\n" + "without a parameter the watchdog will be re-triggered\n") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(wd) + .cmd = do_wd, + .usage = "enable/disable/trigger the watchdog", + BAREBOX_CMD_HELP(cmd_wd_help) +BAREBOX_CMD_END |