[PATCH 0/3] patches to allow DTB to be appended to the ARM zImage

[Dmitry Eremin-Solenikov]

Russell King - ARM Linux wrote:

> On Sun, Jun 12, 2011 at 05:01:22PM +0200, Arnd Bergmann wrote:
>> Of course it should override the device tree, I'm not arguing that.
>> All I'm saying is that we don't need to special-case this or support
>> both formats once the kernel is there as long as we move the information
>> into appropriate DT-representation of the same data.
>
> You're arguing for it to be parsed by whatever fragment of assembly code
> we have to place around the zImage to merge it into DT.
>
> And yes, it's going to have to be assembly code because we don't have a
> C environment at that point which can run in a relocatable way.

Please, again look at the cuboot stuff which is used on powerpc. It uses
limited C environment: it's executed before kernel entry, so it can use
stack, etc. as setup by the bootloader.


-- 
With best wishes
Dmitry