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Re: ixp425 watchdog timer
- From: alfred hitch <alfred dot hitch at gmail dot com>
- To: ecos-discuss at ecos dot sourceware dot org
- Cc: Mark Salter <msalter at redhat dot com>
- Date: Wed, 16 Mar 2005 05:48:59 -0500
- Subject: [ECOS] Re: ixp425 watchdog timer
- References: <29f9165105031601493bcc1b9f@mail.gmail.com>
- Reply-to: alfred hitch <alfred dot hitch at gmail dot com>
Hi,
I did some more searching on the net and I got one thread where this
was discussed ..
http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2004-December/026049.html
think I understand what the issue, good we got to know of it before we
made design based on this -;)
anyways, my other questions are still there .
if I understand correctly,
reset command on ixp425 is basically then start execution from 0x0 again ?
and sleep etc are spin locks, checking timer register in a while loop
? pressing control C makes a interrupt and u catch it to stop flow,
rather come out of flow ?
Cheers,
Alfred
On Wed, 16 Mar 2005 04:49:03 -0500, alfred hitch <alfred.hitch@gmail.com> wrote:
> Hi Mark / All,
>
> I am trying to figure out how the reset command works on redboot,
> does it uses the watchdog timer thing ?
>
> actually while just grep'ing thru the source code's I saw that in the
> file hal_plf_inits.h the HAL_PLATFORM_RESET function is commented out
> cribbing of some errata,
> I couldnt find any such errata's, could u please tell me whats it about ..
>
> How does any sleep,etc boils down on ixp425 plattform where there is
> no RTC ? do we continously spin lock and keeping on reading timer 0
> register and comparing ??
>
> how does script timer thing works ? as in it says in main.c that
> starting script in 4 seconds, how does it measures that ?
>
> may be a little mundane questions, but couldnt figure these out -:)
>
> Cheers,
> Alfred
>
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