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Re: PowerPC SMC serial port drivers.
- From: Gary Thomas <gthomas at redhat dot com>
- To: Erik Reikes <ereikes at hotmail dot com>
- Cc: eCos Discussion <ecos-discuss at sources dot redhat dot com>
- Date: 02 Mar 2002 10:17:15 -0700
- Subject: Re: [ECOS] PowerPC SMC serial port drivers.
- References: <F88KHKWzyi7w5j1hLD40001cc26@hotmail.com>
On Wed, 2002-02-27 at 14:47, Erik Reikes wrote:
> I've got a bit of confusion on the allocation of serial ports on the MPC860
> PowerPC processor.
>
> A little background :
> I am using an A&M Viper board to test out some software that is to run on
> Ecos. I am using the Redboot that was supplied by A&M in flash. It
> defaults to what they are calling serial port 2 but is really hooked up to
> SMC1. It appears to me that the other serial port (what they are calling
> port 1) is hooked up to SCC port 1.
>
> I found a couple of messages relating to a port of the SCC for use as a UART
> on the diag channel a while back. Did this code ever get rolled into the
> CVS tree for Ecos? If so, is there a configuration option I am missing that
> enables it? If not was there a reason it didn't?
>
No, although there has been talk of supporting SCCx ports, we've never received
any contributions in this area. At this time, SCCx is not supported, sorry.
> I have a need for the extra serial port, so I may just have to write/modify
> a driver to talk to it.
>
It shouldn't be too hard.
> I suppose my other option is to get the ethernet debugging going and use
> SMC1 as my data port. It seems my DHCP server doesn't respond to the bootp
> requests from redboot, but I haven't tried very hard to figure this one out
> yet.
The network should work fine (it does for me). One thing you can do to avoid
messing with DHCP/BOOTP is to use 'fconfig' and set a static IP address.
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