[ECOS] AT91EB40 Support (repost)

[ECOS] AT91EB40 Support (repost)

[James Dabbs]

We're interested in evaluating eCos for an embedded network application.  I
am wondering how much work it will be to get eCos running on an Atmel
AT91EB40 EVB with a scabbed-on LAN91C110 or LAN91C96.  We will be using
UDP/IP over ethernet, but we need to be a DCHP client and be able to join IP
multicast groups.

1. Is this supported "out-of-the-box"?

2. If not, is it close to anything already supported?

3. Is there a white-paper on BSP development/porting that can give me an
idea of the task to get eCos running in this environment?

Thanks!
James Dabbs

Re: [ECOS] AT91EB40 Support (repost)

[Jonathan Larmour]

James Dabbs wrote:
> 
> We're interested in evaluating eCos for an embedded network application.  I
> am wondering how much work it will be to get eCos running on an Atmel
> AT91EB40 EVB with a scabbed-on LAN91C110 or LAN91C96.  We will be using
> UDP/IP over ethernet, but we need to be a DCHP client and be able to join IP
> multicast groups.
> 
> 1. Is this supported "out-of-the-box"?

Not out-of-the-box. But I understand people have been working on ports
already. We haven't had any contributions though. Perhaps they could speak
up?

We (Red Hat) are developing a LAN91Cxx ethernet driver, and we hope to make
that available within the next couple of weeks or so.

We don't officially support IP multicast as yet though - or at least, the
functionality may be present in the OpenBSD stack, but I'm pretty sure
we've never tried it, so work may be required. Or it may "just work".
 
> 2. If not, is it close to anything already supported?

The AT91 is just an ARM7TDMI core. There doesn't seem to be anything
particularly wacky with the platform, so basing it on the pid or edb7xxx
ports should be fine. The PID may be a slightly closer match I suppose.
 
> 3. Is there a white-paper on BSP development/porting that can give me an
> idea of the task to get eCos running in this environment?

http://sources.redhat.com/ecos/docs-latest/porting/index.html is the best
place to start right now.

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

Re: [ECOS] AT91EB40 Support (repost)

[Carl van Schaik]

Hi

The port is rather old and presently unsupported by me, but you can get my
(*old*) sources from :
  ftp://ftp.openh.org/pub/ecos/at91-eb01-venus.tar.gz  (7641KB)

please not that I zipped up my whole old ecos tree. Please only download
it if you want to use and maintain the port.
Our bandwidth is limited at the moment.

Inclused are two directories hosts/eb01 anf hosts/venus both of which use
the AT91M40400 processor.


please would anyone with free time keep this port upto date.
I will soon be building some SH-3 and MIPS based boards which I hope to
port eCos to eventually.


regards

Carl van Schaik
<carl@openh.org>


> 
> We're interested in evaluating eCos for an embedded network application.  I
> am wondering how much work it will be to get eCos running on an Atmel
> AT91EB40 EVB with a scabbed-on LAN91C110 or LAN91C96.  We will be using
> UDP/IP over ethernet, but we need to be a DCHP client and be able to join IP
> multicast groups.
> 
> 1. Is this supported "out-of-the-box"?
> 
> 2. If not, is it close to anything already supported?
> 
> 3. Is there a white-paper on BSP development/porting that can give me an
> idea of the task to get eCos running in this environment?
> 
> Thanks!
> James Dabbs
> 

Carl van Schaik   <carl@leg.uct.ac.za>
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Dept. Electrical Engineering, UCT

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