[ECOS] cirrus ep93xx - ecos works, network problems

Andrew Lunn andrew@lunn.ch
Tue Oct 11 14:10:00 GMT 2005


On Tue, Oct 11, 2005 at 03:17:46PM +0200, Deak, Ferenc wrote:
> > > 
> > > We have a custom cirrus ep9307 based board. Cirrus has a software package
> > > for their ep93xx-based boards, which contains patches for linux and a
> > > redboot-only ecos. Redboot and linux works fine on our board. I have
> > > managed to work the basic ecos, but I have trouble with the network.
> > > 
> > > Is there anybody who made the network work, and can help? We would be very 
> > > thankful for any help.
> > 
> > The normal problem here is that the network device driver for Redboot
> > is polled io, where as a full eCos device driver is interrupt
> > driven. I suggest you take a look at the device driver and see what it
> > actually implements.
> 
> The problem is not so theoretical:-) I'm looking and testing and
> modifying the driver until yesterday. It seems that someone at cirrus have written
> the driver "correctly" because there is a redboot and a real-kernel related
> code in it, there is an IT initialised, a NETDEVTAB_ENTRY etc. (but,
> strange that the real IT related routines usually in hal/<proc>/src/proc_misc.c 
> were missing from the patch, but I've added them...) Network ITs are working etc.
> 
> The problem where I stopped: There is register in the network related part of the processor, 
> which is set to 1 to sign that there is a new data filled and ready to send. But when this register
> is set to 1 second times the whole board stops working at this line, prints before this line are 
> appearing but prints after are not. (but these lines are common with the redboot code, so 
> perhaps these are algorithmically right) 
> On the other hand the board cannot be ping-ed, end receive events are not comming (but these are 
> coming under redboot...)
> 
> So if somebody has an ideo to try, I would be very grateful.

What is the license on the code? Can you let us see it or is it closed
source?

        Andrew

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