From: Sascha Hauer <s.hauer@pengutronix.de>
To: "Dr. Patrick Langfeld" <patrick.langfeld@optimeas.de>
Cc: barebox@lists.infradead.org
Subject: Re: Error when starting kernel with devicetree on tx53
Date: Mon, 13 May 2013 14:44:52 +0200 [thread overview]
Message-ID: <20130513124452.GR32299@pengutronix.de> (raw)
In-Reply-To: <em693f4276-887c-4945-ba22-230c24dc89b1@plh001-think>
On Mon, May 13, 2013 at 08:43:58AM +0000, Dr. Patrick Langfeld wrote:
> Thanks Sascha,
> but whats wrong with the devicetree blob?
> I mean the same dtb is working, when I boot the board with uboot.
>
> I use ptxdist to build the kernel image and to build the tx53.dtb
> from tx53.dts
>
> Are there some special settings to build the dtb for use with barebox?
>
> What can be wrong with the dtb.
A dtb must have 0xd00dfeed (big endian) in the first 4 bytes. Your dtb
seems to have 0x0000f085 instead so barebox doesn't recognize this as
dtb.
You could do a:
md -s /mnt/tftp/tx53.dtb
on the commandline. You should see the magic.
Then afterwards you can add the following to commands/bootm.c just below
the line printing "...is not an oftree but...":
memory_display(fdt, 0, 0x100, 4, 0);
The result should be identical and both should have 0xedfe0dd0 as the
first value.
Sascha
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prev parent reply other threads:[~2013-05-13 12:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <emde4cb769-926c-4395-89e6-073d8c931261@plh001-think>
2013-05-12 18:12 ` Dr. Patrick Langfeld
2013-05-13 4:59 ` Sascha Hauer
2013-05-13 8:43 ` Re[2]: " Dr. Patrick Langfeld
2013-05-13 12:44 ` Sascha Hauer [this message]
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