On Tue, 2 May 2006 00:59:48 +0200 Thomas Glanzmann wrote:
> Hello everyone,
> I have an Intel board (D915GEV/D915GRF) with an onboard i8xx TCO timer
> watchdog on it. I compiled a kernel and tried to make it reset my
> machine, but it simply doesn't. I use Linus Linux tree (GIT HEAD), the
> following watchdog related configuration:
>
> CONFIG_WATCHDOG=y
> CONFIG_WATCHDOG_NOWAYOUT=y
> CONFIG_I6300ESB_WDT=y
> CONFIG_I8XX_TCO=y
>
> I tried to test the watchdog using the following:
>
> cat > /dev/watchdog
*** see below
> and wait a few minutes, but that doesn't reset my machine. dmesg shows the
> following:
>
> (webfarm) [~] dmesg | grep TCO
> i8xx TCO timer: heartbeat value must be 2<heartbeat<39, using 30
> i8xx TCO timer: initialized (0x0460). heartbeat=30 sec (nowayout=1)
>
> lspci is this:
>
[snip]
>
> Has somone any ideas, did I do something wrong? From looking at the
> source code it looks like the watchdog is enabled as soon as I open the
> device. And if I don't feed anything in, it shouldn't reload the timer.
TCO watchdog works on my old P-III machine. After writing to
/dev/watchdog, about 50 (not 30) seconds later, it reboots.
Oh, I see. Two choices:
use: echo -n 1 > /dev/watchdog
or when you use: cat > /dev/watchdog
and press CR, that doesn't close /dev/watchdog yet.
You need to kill cat (^C) and then /dev/watchdog is closed
and the watchdog timer starts counting. You will (should) see
a message like so:
i8xx TCO timer: Unexpected close, not stopping watchdog!
then wait awhile, then it reboots.
---
~Randy
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
