Re: ppcboot and powerpc branch question

[fabien <fabien.fb@gmail.com>]

Thanks for yours advices Scott and Clemens i'll read the docs given
Best regards

2007/11/30, Clemens Koller <clemens.koller@anagramm.de>:
> fabien schrieb:
> > hi all,
> >
> > After some problem with my custom board and kernel 2.6.19 about the
> > init process, i've moved
> > on 2.6.23 and that had fixed my problems. (related to this post :
> > http://marc.info/?l=3Dlinuxppc-embedded&m=3D119609022221017&w=3D2)
> > Apparently it was a problem with cpm_uart on SMC1.
> > (http://lkml.org/lkml/2007/9/23/99)
> > the patch have been integrated in 2.6.23. Now i use this kernel and
> > busybox works.
> > I want to migrated my board in powerpc branch instead of ppc (i plan
> > to use xenomai but in 2.6.23
> > there is only an adeos patch for piowerpc branch), but i see the use
> > of a device tree
> > instead of bd_t struct. I'm a bit disappointed because i also see that
> > older u-boot (in my case
> > ppcboot 1.1.5) aren't capable to pass dts to kernel.
> > Is there a way to keep my old bootloader to boot a powerpc branch kerne=
l ?
>
> please read linux/Documentation/powerpc/booting-without-of.txt
>
> To get a cuImage, you
> - need to adjust your <platform>.dts and configure your kernel to use it.
> - need the latest dtc (device tree compiler),
> - need the latest mkimage (from the latest u-boot tree)
> - and build your cuImage by building the target zImage (make zImage)
> -> your cuImage then rests in i.e. arch/powerpc/boot/cuImage.<platform>
>
> Aside of no good documentation, I ran into the problem that the
> embedded device tree doesn't get updated by the bd_t struct properly
> (the mac addresses) in the latest versions of the kernel. This might be
> a bug or a configuration error on my side. I didn't check yet.
> U-Boot with full device tree support will hopfully fix that, when it's
> out.
>
> Regards,
>
> --
> Clemens Koller
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