On 05/27/2017 11:26 AM, Eugeniu Rosca wrote:
Tested on Rcar-H3 Salvator-X board: ********************** Cold boot finished salvator-x:/home/root# salvator-x:/home/root# ./wdt_test -s Last boot is caused by: Power-On-Reset. salvator-x:/home/root# salvator-x:/home/root# ./wdt_test -t 1 -p 5 -e Watchdog timeout set to 1 seconds. Watchdog ping rate set to 5 seconds. Watchdog card enabled. Watchdog Ticking Away! ********************** Reboot due to watchdog trigger finished salvator-x:/home/root# salvator-x:/home/root# ./wdt_test -s Last boot is caused by: Watchdog. salvator-x:/home/root# reboot ********************** Reboot due to user action finished salvator-x:/home/root# salvator-x:/home/root# ./wdt_test -s Last boot is caused by: Power-On-Reset. salvator-x:/home/root# salvator-x:/home/root# ./wdt_test --help -s to print the status (POR/watchdog) of the last boot, -d to disable, -e to enable, -t <n> to set the timeout, -p <n> to set the ping rate, and run by itself to tick the card. Parameters are parsed left-to-right in real-time. Example: ./wdt_test -d -t 10 -p 5 -e salvator-x:/home/root# Signed-off-by: Eugeniu Rosca <erosca@xxxxxxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
--- tools/testing/selftests/watchdog/watchdog-test.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/testing/selftests/watchdog/watchdog-test.c b/tools/testing/selftests/watchdog/watchdog-test.c index a74c9d739d07..8f4198b07a61 100644 --- a/tools/testing/selftests/watchdog/watchdog-test.c +++ b/tools/testing/selftests/watchdog/watchdog-test.c @@ -54,6 +54,7 @@ int main(int argc, char *argv[]) unsigned int ping_rate = 1; int ret; int i; + int bootstatus;setbuf(stdout, NULL); @@ -85,7 +86,16 @@ int main(int argc, char *argv[])ping_rate = strtoul(argv[i + 1], NULL, 0); printf("Watchdog ping rate set to %u seconds.\n", ping_rate); i++; + } else if (!strncasecmp(argv[i], "-s", 2)) { + ret = ioctl(fd, WDIOC_GETBOOTSTATUS, &bootstatus); + if (!ret) + printf("Last boot is caused by: %s.\n", (bootstatus != 0) ? + "Watchdog" : "Power-On-Reset"); + else + printf("Error: WDIOC_GETBOOTSTATUS failed.\n"); + goto end; } else { + printf("-s to print the status (POR/watchdog) of the last boot,\n"); printf("-d to disable, -e to enable, -t <n> to set " "the timeout,\n-p <n> to set the ping rate, and "); printf("run by itself to tick the card.\n");
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