Booting PPC Linux

[Sascha Hauer]

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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