From: Sascha Hauer <s.hauer@pengutronix.de>
To: Renaud Barbier <renaud.barbier@ge.com>
Cc: barebox@lists.infradead.org
Subject: Re: Booting PPC Linux
Date: Thu, 1 Mar 2012 21:07:29 +0100 [thread overview]
Message-ID: <20120301200729.GE3852@pengutronix.de> (raw)
In-Reply-To: <4F4FD0EF.1000905@ge.com>
On Thu, Mar 01, 2012 at 07:41:35PM +0000, Renaud Barbier wrote:
> I have a uImage + dtb that use to boot on a MPC8544-like system
> a few months ago.
>
> After rebasing my code, it did not work.
>
> I notice that in arch/ppc/lib/ppclinux.c the kernel is now called
> with the device tree as a parameter.
>
> After investigation, I copied the device tree to within 8MB of the
> kernel entry point (0x0). It booted.
>
> Is the DTB relocation a missing step?
Yes, it seems so. barebox holds the device tree in malloced space. This
is likely outside 8MB of the kernel entry point. I was not aware of that
restriction.
Sascha
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next prev parent reply other threads:[~2012-03-01 20:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-01 19:41 Renaud Barbier
2012-03-01 20:07 ` Sascha Hauer [this message]
2012-03-02 16:28 ` Renaud Barbier
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