From: John Traill <john.traill@freescale.com>
To: rpoornar@yahoo.com
Cc: linuxppc-dev@ozlabs.org
Subject: Re: dts file for ep8548A board
Date: Tue, 16 Sep 2008 10:44:11 +0100 [thread overview]
Message-ID: <48CF7FEB.2050506@freescale.com> (raw)
In-Reply-To: <462940.11077.qm@web57006.mail.re3.yahoo.com>
Don't know if this helps but ..
The EP boards I've used have an old version of u-boot which don't support passing the device tree address so I've had to build a cuImage.
Cheers.
poornima r wrote:
> Hi all,
>
> I am working on ep8548A embedded planet board.
> I am using mpc8548cds dtb file (mpc8548cds.dts file in
> arch/powerpc/boot/dts directory of the kernel source) as my device tree
> file.
> I am tracing the kernel initilization path through BDI.
> The BDI tracing is hanging in early_init_devtree ( in machine_init
> function) if the r3 register (physical pointer to device tree block) is
> not set to dtb file loaded location in RAM.
> Once I set the r3 register manually in BDI (rm r3 <dtb file location>)
> the kernel is passing machine_init function (passing early_init_devtree(
> ) ).
> I tried to statically set r3 register in head_fsl_booke.S file by
> using ori instruction but I was not able to set the r3 value to dtb file
> RAM location.
> Are any changes necessary in mps8548cds.dts for ep8548A board?
> How do we and where should we set the r3 register value in
> head_fsl_booke.S file for device tree initilization?
>
> Thanks,
> Poornima
>
>
>
>
>
>
>
> ------------------------------------------------------------------------
>
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--
John Traill
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prev parent reply other threads:[~2008-09-16 9:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-16 7:42 dts file for ep8548A board poornima r
2008-09-16 9:44 ` John Traill [this message]
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