Excellent job on the firewire support!

[John-Mark Gurney]

Doug Rabson wrote this message on Sun, Jul 18, 2004 at 21:04 +0100:
> > 4) Does the loader know about dcons?  Eg, can I do "unload <ret> boot
> >    kernel.test" using dcons?
> 
> Actually thats the only downside of dcons. It doesn't cut in until the 
> firewire controller attaches. It relies on the fact that the fwohci 
> driver allows access to physical memory from any node on the bus 
> (implemeted in hardware so you can examine the memory of a hung 
> machine). The dconschat program uses this feature to access the dcons 
> ring buffers in the target machine.
> 
> I could imagine a dcons driver in the loader which just enabled physical 
> access and used some kind of loader trick to hand off the ring buffers 
> to the kernel dcons driver. It doesn't exist though - say nice things 
> to the author and he might find the time for it :-)

You guys might want to check out nextboot.. it's very nice utility
that I've been using in my recent kernel debugging... should do what
you need to do w/o loader knowing about dcons...

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."