This is the mail archive of the
ecos-discuss@sources.redhat.com
mailing list for the eCos project.
RE: Watchdog Device
- To: 'Jonathan Larmour' <jlarmour at redhat dot com>, mekala natarajan <mekala_natarajan at yahoo dot com>
- Subject: RE: [ECOS] Watchdog Device
- From: Doug Fraser <dfraser at photuris dot com>
- Date: Thu, 17 May 2001 07:07:56 -0400
- Cc: "Pamulapati, Indrasena (CTS)" <pindrase at chn dot cognizant dot com>, ecos-discuss at sources dot redhat dot com
There is a watchdog in the mpc860, you just have to write
a service routine to keep it from barking. The problem with
the MPC8xx watchdog is that you get only one chance to set
it up at boot time. If you ever disable it, the only way to
re-enable it is through a hardware reset.
If it gets in the way of testing, then disable it in that
load, then remove the code that disables it in your non-test
release.
The details are in the SYPCR register. In my MPC850 manual,
that is section 10.4.3 at page 10-8
Doug
> -----Original Message-----
> From: Jonathan Larmour [mailto:jlarmour@redhat.com]
> Sent: Thursday, May 17, 2001 3:11 AM
> To: mekala natarajan
> Cc: Pamulapati, Indrasena (CTS); ecos-discuss@sources.redhat.com
> Subject: Re: [ECOS] Watchdog Device
>
>
> mekala natarajan wrote:
> >
> > Is watchdog driver available for MBX evaluation
> > board(MBX starter kit-MPC860).
>
> There is no hardware watchdog driver. One is emulated by the
> kernel using
> the standard clock however. Care to write one?
>
> Jifl
> --
> Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44
> (1223) 271062
> Maybe this world is another planet's Hell -Aldous Huxley ||
> Opinions==mine
>