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Date: Mon, 7 Feb 2011 07:55:32 -0800
From: Tony Lindgren <tony@atomide.com>
To: Grant Likely <grant.likely@secretlab.ca>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
        Nicolas Pitre <nico@fluxnic.net>, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        Catalin Marinas <catalin.marinas@arm.com>,
        Jeremy Kerr <jeremy.kerr@canonical.com>
Subject: Re: [RFC] arm: Defer lookup of machine_type and vet of atags to
 setup.c
Message-ID: <20110207155532.GD20795@atomide.com>
References: <20110111104051.GA11039@n2100.arm.linux.org.uk>
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* Grant Likely <grant.likely@secretlab.ca> [110112 09:48]:
> On Wed, Jan 12, 2011 at 10:25 AM, Russell King - ARM Linux
> <linux@arm.linux.org.uk> wrote:
> > On Wed, Jan 12, 2011 at 10:16:44AM -0700, Grant Likely wrote:
> >> On Wed, Jan 12, 2011 at 9:53 AM, Nicolas Pitre <nico@fluxnic.net> wrote:
> >> > On Wed, 12 Jan 2011, Grant Likely wrote:
> >> >
> >> >> Actually it looks like the real problem is that the mmu has been
> >> >> turned on, but the virtual mappings for devices have not yet been
> >> >> established, and so the debug macros aren't using a valid address.
> >> >
> >> > A temporary virtual mapping should be there -- look for addruart in
> >> > head.S.
> >>
> >> Hi Russell and Nicolas,
> >>
> >> Oops, yes all the early debug stuff works fine.  Stupid human trick on
> >> my end, but I've sorted it out now.  Thanks for the help.  I'll have
> >> patches to post later today.
> >
> > I just hacked this up, and on Versatile (real hardware) it produces
> > the below for an invalid r1 value - and of course works for a proper r1
> > value.
> 
> Heh, that look pretty close to identical to what I was just about to send.
> 
> Acked-by: Grant Likely <grant.likely@secretlab.ca>

Tested-by: Tony Lindgren <tony@atomide.com>