Quick question?

[Rayagonda Kokatanur]

On Fri, Sep 25, 2020 at 9:29 PM jchludzinski <jchludzinski at vivaldi.net>
wrote:

> On 2020-09-25 07:13, Rayagonda Kokatanur wrote:
> > On Fri, Sep 25, 2020, 4:32 PM jchludzinski <jchludzinski at vivaldi.net>
> > wrote:
> >
> >> On 2020-09-24 17:36, jchludzinski wrote:
> >>> I'm trying to bring up an RTOS (vxworks) using u-boot and have had
> >>> some "partial" success:
> >>>
> >>> If I use the 2014 u-boot that comes with Quartus 18.1 (a tarball
> >> in
> >>> the download), vxworks successfully boots.
> >>>
> >>> If I clone the github repo
> >>> (https://github.com/altera-opensource/u-boot-socfpga.git)  and
> >> build
> >>> u-boot from that (2020), vxworks fails to boot. What appears to be
> >>> happening is an (fpga?) watchdog timer goes off and a HW reset is
> >>> called. Then of course, u-boot reboots.
> >>>
> >>> Any thoughts? Why would this occur with the newer u-boot and not
> >> with
> >>> the older u-boot?
> >>>
> >>> ---John
> >>
> >> I don't see the "Watchdog enabled" message in the output from the
> >> older
> >> u-boot.
> >
> > watchdog service starts by default in latest uboot and it's set to
> > 60s.
> >
> > If you wait for more than 60s at uboot prompt or you os loading takes
> > long time then watchdog resets.
> >
> > Define CONFIG_WATCHDOG , this will takes care of resting watchdog.
> >
> > Thanks,
> > Rayagonda
> >
> >>
> Thanks for the suggestion but this reset occurs while vxworks is in the
> process of booting up.
>
> Could u-boot set a HW watchdog timer before handing control over to
> vxworks and, while vxworks is booting, the timer goes off and calls
> reset?
>

If wdt is not initialized by vxworks then I think uboot wdt will be running
and it will reset.
Did you try  defining  CONFIG_WATCHDOG  in uboot ?


Best regards,
Rayagonda
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