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From: Eric Benard <eric@eukrea.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: i.MX51 & MMU
Date: Thu, 24 Feb 2011 10:01:03 +0100	[thread overview]
Message-ID: <4D661E4F.20801@eukrea.com> (raw)
In-Reply-To: <20110224083925.GO7381@pengutronix.de>

Hi Sascha,

On 24/02/2011 09:39, Sascha Hauer wrote:
> On Wed, Feb 23, 2011 at 09:34:46PM +0100, Eric Benard wrote:
>> Hi,
>>
>> has anyone recently tested barebox master on a babbage board with
>> MMU enabled ? Here (not on a babbage, with a TO2 i.MX515 with 1 bank
>> of DDR2), enabling MMU crash the board (which works fine with
>> barebox with MMU disabled and with Linux 2.6.38-rc6 so the hardware
>> seems not to be the root of the problem).
>
> The memory space of the i.MX51 is a bit tight. It may be that you shadow
> registers with the dma coherent memory space. Can you please post your
> mmu setup code sniplet?
> The babbage works with mmu enabled.
>
OK so the problem is on my side. For the moment the mmu part is the one of the 
babbage. But I must investigate as I only have one DDR2 bank on this board 
(for a 256MB total size) when the babbage has 2 (for a 512MB total size).

Thanks,
Eric

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  reply	other threads:[~2011-02-24  9:01 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-23 20:34 i.MX51 & MMU Eric Benard
2011-02-24  8:39 ` Sascha Hauer
2011-02-24  9:01   ` Eric Benard [this message]
2011-02-24  9:01   ` Eric Benard

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