From: Kim Phillips <kim.phillips@freescale.com>
To: Fredrik Roubert <roubert@df.lth.se>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: How to move from /ppc/ to /powerpc/
Date: Tue, 12 Sep 2006 10:58:30 -0500 [thread overview]
Message-ID: <20060912105830.3923d537.kim.phillips@freescale.com> (raw)
In-Reply-To: <20060912153316.GC16340@igloo.df.lth.se>
On Tue, 12 Sep 2006 17:33:16 +0200
Fredrik Roubert <roubert@df.lth.se> wrote:
> Hi!
>
> I have a custom board on which I currently run Linux 2.6.18-rc6
> configured for MPC834x_SYS in the /ppc/ tree, which just a few minor
> changes. Now I'm interested to move to using the /powerpc/ source tree
> instead, but I can't figure out exactly what steps are necessary to do
> this.
>
> Does anyone run a MPC834x_SYS built with ARCH=powerpc?
>
yes
> I boot the board with U-Boot (version 1.1.4, customized), and I assume
> that I need to add some stuff for this new device tree thing, but I
> can't figure out exactly what the kernel will expect.
the kernel expects a pointer to a device tree instead of a bd_t. The 8349EMDS device tree source is now in linux/arch/powerpc/boot/dts. You'll need the device tree compiler (dtc) from jdl.com to build your flat device tree binary (dtb; what the kernel expects).
>
> Does anyone have some pointers on how to do this?
>
Matt's u-boot patches address the issue well for 85xx, they are straightforward to adapt to 83xx:
http://sourceforge.net/mailarchive/forum.php?thread_id=15518792&forum_id=12898
they allow you to tftp the dtb into mem, and "bootm ${loadaddr} - ${oftaddr}" to start an ARCH=powerpc kernel.
> Cheers // Fredrik Roubert
Kim
next prev parent reply other threads:[~2006-09-12 15:58 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-12 15:33 How to move from /ppc/ to /powerpc/ Fredrik Roubert
2006-09-12 15:58 ` Kim Phillips [this message]
2006-09-12 16:03 ` Jon Loeliger
2006-09-13 13:28 ` Fredrik Roubert
2006-09-13 14:46 ` Jon Loeliger
2006-09-13 17:07 ` Matthew McClintock
2006-09-21 16:08 ` Fredrik Roubert
2006-09-25 16:49 ` Matthew McClintock
2006-09-25 17:17 ` Fredrik Roubert
2006-09-25 17:20 ` Matthew McClintock
2006-09-25 17:41 ` Fredrik Roubert
2006-09-25 18:59 ` Matthew McClintock
2006-09-27 14:49 ` Fredrik Roubert
2006-09-27 15:51 ` Fredrik Roubert
2006-09-12 16:20 ` Vitaly Bordug
-- strict thread matches above, loose matches on Subject: below --
2006-09-13 6:58 Claus Gindhart
2006-09-13 13:30 ` Fredrik Roubert
2006-09-13 14:07 Claus Gindhart
2006-09-25 16:56 Joakim Tjernlund
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