From owner-freebsd-alpha  Sat Oct 21 23:19:11 2000
Delivered-To: freebsd-alpha@freebsd.org
Received: from feral.com (feral.com [192.67.166.1])
	by hub.freebsd.org (Postfix) with ESMTP
	id 5CD7837B4CF; Sat, 21 Oct 2000 23:19:07 -0700 (PDT)
Received: from beppo (beppo [192.67.166.79])
	by feral.com (8.9.3/8.9.3) with ESMTP id XAA32571;
	Sat, 21 Oct 2000 23:19:06 -0700
Date: Sat, 21 Oct 2000 23:19:08 -0700 (PDT)
From: Matthew Jacob <mjacob@feral.com>
Reply-To: mjacob@feral.com
To: John Baldwin <jhb@FreeBSD.ORG>
Cc: alpha@FreeBSD.ORG, cvs-all@FreeBSD.ORG,
	cvs-committers@FreeBSD.ORG
Subject: RE: cvs commit: src/sys/sys kernel.h
In-Reply-To: <Pine.LNX.4.21.0010211559580.762-100000@zeppo.feral.com>
Message-ID: <Pine.BSF.4.21.0010212318220.1105-100000@beppo.feral.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-alpha@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org


This (may have) caused my PC164 to now boot. I'll look into
what you suggest tomorrow.


On Sat, 21 Oct 2000, Matthew Jacob wrote:

> 
> 
> > 
> > On 20-Oct-00 John Baldwin wrote:
> > > jhb         2000/10/20 15:12:18 PDT
> > > 
> > >   Modified files:
> > >     sys/sys              kernel.h 
> > >   Log:
> > >   Revert the init_clocks change in revision 1.72.  On the alpha we use an
> > >   ISA device for our clock, so trying to initialize the clock before probing
> > >   devices introduces a chicken and egg problem.
> > >   
> > >   Debug help from:    peter
> > >   
> > >   Revision  Changes    Path
> > >   1.74      +2 -2      src/sys/sys/kernel.h
> > 
> > This should fix the alpha kernels (in theory).  This fix is only
> > temporary however.  The clock code on the alpha needs to be restructured
> > somewhat (most of the clock initialization moved from cpu_initclocks()
> > to clock_attach() and using the cpu clock interrupt to trigger hardclock()
> > during the device probe) and then this change can be un-reverted.
> 
> Hmm. This is what I'd been thinking might be the case. However, not
> all alphas use an ISA clock. We'll see. As soon as my DSL comes back up (when
> you'll see this mail, likely) I'll update and try and see where we're at.
> 
> 
> -matt
> 
> 
> 
> 



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-alpha" in the body of the message