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Re: problem with kdb on ttyS5

To: Steven Dake <sdake@xxxxxxxxxx>
Subject: Re: problem with kdb on ttyS5
From: Jack F Vogel <jfv@xxxxxxxxxxxx>
Date: Wed, 24 Aug 2005 17:31:36 -0700
Cc: kdb@xxxxxxxxxxx
In-reply-to: <1124929127.12543.114.camel@xxxxxxxxxxxxxxxxxxxxx>
References: <1124929127.12543.114.camel@xxxxxxxxxxxxxxxxxxxxx>
Reply-to: jfv@xxxxxxxxxxxx
Sender: kdb-bounce@xxxxxxxxxxx
User-agent: Mutt/1.5.6i
On Wed, Aug 24, 2005 at 05:18:47PM -0700, Steven Dake wrote:
> Guys
> I've got a board that has a console on ttyS5.  I think that is related
> to the problem.  When I run KDB 4.4 on i386 arch, I get the following
> output:
> 
> Kernel command line: root=/dev/nfs ip=dhcp console=ttyS5,115200n8
> 
> Here's the dmesg:
> kdb: Initialization failed - no console.  kdb is disabled.
> kdb version 4.4 by Keith Owens, Scott Lurndal. Copyright SGI, All Rights
> Reserved
> 
> Any suggestions for what may be wrong?
> 
> regards
> -steve

What hardware and driver is underlying ttyS5, cuz kdb has
initialization code in drivers/serial/8250.c that populates
a struct based on that driver startup, the symptom you are
seeing means that when kdb runs its init its finding NO
console info initialized.

Could it be a different driver being used?

Anyway, just an thought...

Jack

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