From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
To: Olof Johansson <olof@lixom.net>
Cc: Steve Heflin <sheflin@newagemicro.com>, linuxppc-embedded@ozlabs.org
Subject: Re: Sequoia build with KDBG
Date: Sat, 1 Mar 2008 07:13:15 -0600 [thread overview]
Message-ID: <20080301071315.3c7c05dc@zod.rchland.ibm.com> (raw)
In-Reply-To: <20080301050249.GA23099@lixom.net>
On Fri, 29 Feb 2008 23:02:50 -0600
Olof Johansson <olof@lixom.net> wrote:
> On Fri, Feb 29, 2008 at 08:30:15PM -0600, Josh Boyer wrote:
>
> > > poor man's debugging works fine if a serial port is available, but my
> > > Sequoia platform doesn't get that far! I use u-boot to download and
> > > boot my image, and I don't get any serial output after the boot completes:
> >
> > By "poking characters out the serial port" I meant I literally coded up
> > assembly functions to setup MMU translations and poke hex values at hard
> > coded addresses. That's why it's "poor man's". If you had a working
> > serial port out of the box, that would be a luxury ;).
>
> Does 4xx have support for udbg and xmon? That would be a good first step
> in getting an in-kernel debugger facility going.
Yes. Or at least it did as of a few kernel releases ago when I last
tested it. It's helpful for a number of thing, but debugging extremely
early stuff isn't possible with it.
josh
next prev parent reply other threads:[~2008-03-01 13:15 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-21 21:33 MODPOST section mismatches Steve Heflin
2008-02-22 16:12 ` Steve Heflin
2008-02-22 20:52 ` Josh Boyer
2008-02-22 22:26 ` Steve Heflin
2008-02-22 22:36 ` Josh Boyer
2008-02-22 23:07 ` Steve Heflin
2008-02-23 0:30 ` Josh Boyer
2008-02-23 0:38 ` Steve Heflin
2008-02-29 21:34 ` Sequoia build with KDBG Steve Heflin
[not found] ` <200802292133.m1TLXqv3012273@e36.co.us.ibm.com>
2008-02-29 21:35 ` Josh Boyer
2008-02-29 22:31 ` Steve Heflin
2008-02-29 22:58 ` Scott Wood
2008-02-29 23:28 ` Jon Loeliger
2008-03-01 0:16 ` Wolfgang Denk
2008-03-01 1:48 ` Steve Heflin
[not found] ` <200802292230.m1TMUk4I005462@e31.co.us.ibm.com>
2008-02-29 22:51 ` Josh Boyer
[not found] ` <200803010023.m210NHwr011345@e2.ny.us.ibm.com>
2008-03-01 2:30 ` Josh Boyer
2008-03-01 2:55 ` Steve Heflin
2008-03-02 14:47 ` Wolfgang Denk
2008-03-01 5:02 ` Olof Johansson
2008-03-01 13:13 ` Josh Boyer [this message]
2008-03-01 15:57 ` Olof Johansson
-- strict thread matches above, loose matches on Subject: below --
2008-03-01 0:36 Steve Heflin
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