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Re: Remote target behind console server
- From: Eli Zaretskii <eliz at is dot elta dot co dot il>
- To: Quality Quorum <qqi at theworld dot com>
- Cc: "KONG, Gangfeng" <gkong at IPRG dot nokia dot com>, Daniel Jacobowitz <drow at mvista dot com>, Andrew Cagney <ac131313 at ges dot redhat dot com>, gdb at sources dot redhat dot com
- Date: Thu, 4 Jul 2002 07:52:45 +0300 (IDT)
- Subject: Re: Remote target behind console server
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?