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Re: Kernel Debugging on the DBAu1500

To: baitisj@evolution.com
Subject: Re: Kernel Debugging on the DBAu1500
From: Pete Popov <ppopov@mvista.com>
Date: 07 Mar 2003 12:39:22 -0800
Cc: linux-mips@linux-mips.org
In-reply-to: <20030307123637.Y20129@luca.pas.lab>
Organization: MontaVista Software
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20030306185345.W20129@luca.pas.lab> <1047043427.30914.432.camel@zeus.mvista.com> <1047043677.6389.436.camel@zeus.mvista.com> <20030307123637.Y20129@luca.pas.lab>
Sender: linux-mips-bounce@linux-mips.org
On Fri, 2003-03-07 at 12:36, Jeff Baitis wrote:
> Pete wrote wrote:
> > > Take a look at the board and remind me if the second serial port is
> > > actually uart2, where the first is uart0. 
> Pete wrote:
> > Sorry, I meant uart3, which would be a reason why the UART2_ADDR define
> > below wouldn't work.
> 
> Hrm. The DBAu1500 seems to lock up when I execute:
>     echo "please, no freeze" > /dev/ttyS2
> I can't even get SysRq to work after that command.

You're just a troublemaker ;) I'll take a look and fix it. I suspect I
know what the problem is.

> /dev/ttyS3 works fine, though.
> 
> > > I think it might be. If that's
> > > the case, arch/mips/au1000/common/dbg_io.c has this define if kgdb is
> > > defined:
> > > 
> > > #define DEBUG_BASE  UART2_ADDR
> 
> I changed it to:
> #define  DEBUG_BASE  UART3_ADDR
> 
> Debugging seems to work great now! Thanks!

No problem.

Pete


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