network boot

Eric Norum eric.norum at
Tue Dec 18 14:33:34 UTC 2001

Davide Del Vento wrote:
> >Chris is the expert on this, but I'll throw in my $0.02 anyhow.
> >
> >I use etherboot to boot my PC targets.  I picked up the bootstrap PROM
> >image from  Here's the script I use to
> >produce a netboot image from the xxxxxx.exe produced by the RTEMS
> >application makefiles.
> Thanks you.
> I reply so later because I had problem with my DHCP server.
> My network administrator now gets it work, but there is still a problem: he
> says that I need to tell RTEMS the DHCP server IP-number, but rom-o-matic
> don't ask me for! When I try to boot with a generated boot image on floppy,
> rtems search for the DHCP server, but it doesn't find and print only dots.
> What's about this?
> Bye,
> ;David

RTEMS, and I presume the boot ROM as well, broadcast the DHCP request
and so need to know neither the IP nor Ethernet address of the DHCP
server.   Try using a network sniffer (for example ethereal if you've
got a linux machine somewhere on the network segment) to see if the
request is making it to the DHCP server and if the server is replying.

Eric Norum                                 eric.norum at
Department of Electrical Engineering       Phone: (306) 966-5394
University of Saskatchewan                 FAX:   (306) 966-5407
Saskatoon, Canada.

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