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Date: Wed, 03 Jul 2002 21:55:00 -0000
From: Eli Zaretskii <eliz@is.elta.co.il>
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To: Quality Quorum <qqi@theworld.com>
cc: "KONG, Gangfeng" <gkong@IPRG.nokia.com>,
        Daniel Jacobowitz <drow@mvista.com>,
        Andrew Cagney <ac131313@ges.redhat.com>, gdb@sources.redhat.com
Subject: Re: Remote target behind console server
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On Thu, 4 Jul 2002, Quality Quorum wrote:

> On Wed, 3 Jul 2002, KONG, Gangfeng wrote:
> 
> > > > I start the gdb stub on the target by:
> > > >          gdbstart -s 38400 -t /dev/ttyS0
> > > > and start the gdb on the development box by:
> > > >          gdb vmlinux
> > > >          gdb)
> > > >          gdb) set remotebaud 38400
> > > >          gdb) target remote my-server-ipaddr:port  #note, the port I put
> > > > here is the serial port# on the server,
> > > >                                                  #not L4 port, correct?
> > >
> > >No, you have to use telnet port here.
> >
> > Hi,
> >
> > normally, I use the command:
> >          telent server-ipaddr 2001
> > to access its port 1. (2002 for port 2, 2003 for port 3 ...)
> >
> > It looks like console server already map its L4 port into serial port.
> 
> I suppose that L4 means port 4 on the server and /dev/ttyS0 on the target
> then you have to use 'target server-ipaddr 2004'.
> 
> 
> If L4 means something else, then use another port.
> 
> 
> How to debug a connection:
> 
> 1. Make sure that terminal server is properly configured and the
>    cable is good:  connect port 4 on the terminal server to the some known
>    working target, e.g. standar UNIX serial port, do 'telnet server-ip
>    2004' and type stuff on console and check responses.
> 
> 2. Make sure that gdb stub is workin properly: connect port 4 on the
>    terminal server to debug port on the targe, start gdb stub, again do
>    'telnet server-ip 2004' and make sure that by hitting return you
>    cause gdb to send you properly formed packets.
> 
> 3. Start gdb and do 'target remote server-ip:2004' I would be very
>    surprised if it does not work at the point.

Does anyone think that some of the above should be in the manual?