linux-kernel - Re: arm: CONFIG_ARM_PATCH_PHYS

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Message-ID: <20120410211210.310b65ea@sf.home>
Date:	Tue, 10 Apr 2012 21:12:10 +0300
From:	Sergei Trofimovich <slyich@...il.com>
To:	Ian Campbell <ijc@...lion.org.uk>
Cc:	Russell King <rmk+kernel@....linux.org.uk>,
	linux-kernel@...r.kernel.org, Will Deacon <will.deacon@....com>
Subject: Re: arm: CONFIG_ARM_PATCH_PHYS_VIRT=y is broken on kirkwood

On Mon, 09 Apr 2012 22:28:28 +0100
Ian Campbell <ijc@...lion.org.uk> wrote:

> On Sun, 2012-04-08 at 11:59 +0300, Sergei Trofimovich wrote:
> > In order to make the box boot I had to set:
> >     CONFIG_EMBEDDED=y
> >     # CONFIG_ARM_PATCH_PHYS_VIRT is not set
> >    CONFIG_PHYS_OFFSET=0x0
> > 
> > Do you have an idea why it does not boot anymore by default?
> 
> There is a u-boot commit which fixes this issue:
> 
> commit 679530278d5a79d34e356ad2d452f4400953bfc2
> Author: Michael Walle <[michael@...le.cc]>
> Date:   Mon Feb 6 22:42:10 2012 +0530
> 
>     arm, arm-kirkwood: disable l2c before linux boot
>     
>     The decompressor expects the L2 cache to be disabled. This fixes booting
>     some kernels, which have CONFIG_ARM_PATCH_PHYS_VIRT enabled.
>     
>     Signed-off-by: Michael Walle <michael@...le.cc>
>     Acked-by: Prafulla Wadaskar <prafulla@...vell.com>
>     Cc: Albert ARIBAUD <albert.u.boot@...baud.net>
>     Cc: Prafulla Wadaskar <prafulla@...vell.com>
>     Cc: Wolfgang Denk <wd@...x.de>

Thank you, Ian. Updating u-boot helped!

Sorry for the noise.

-- 

  Sergei

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