[PATCH 12/17] ARM: fix magic for bootloader in BE8

Ben Dooks ben.dooks at codethink.co.uk
Tue Feb 12 13:54:30 EST 2013

On 12/02/13 18:50, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 12:08 Sat 09 Feb     , Russell King - ARM Linux wrote:
>> On Fri, Feb 08, 2013 at 11:06:55PM -0500, Nicolas Pitre wrote:
>>> On Fri, 8 Feb 2013, Ben Dooks wrote:
>>>> If the boot-loader is running little endian and the kernel is compiled
>>>> big endian then it will not verify the magic number of the front of the
>>>> kernel.
>>>> Note, do we need to also reverse the two values after the magic, or are
>>>> they used later on in the kernel decompressor?
>>> Those value instances are not used by the code.  So for consistency they
>>> would have to be reversed, yes.  Given those are variable and determined
>>> by the linker, I don't know how you could manage it.
>> Which is why I wish we never had them, they've got in the way before
>> and they'll continue to do so.  I've seen boot loaders which do
>> precisely the wrong thing with these too, and had to fight them for
>> doing so.
> in barebox we detect the type of file and detect we boot a zImage so be able
> to detect we need to boot a be zImage is really appreciate
> so we do not ask user how to boot but handle it automaticly
> Best Regards,
> J.

IIRC, IXP is BE32, not BE8 so this shouldn't affect it.

I'm removing this from the base patch-set anyway and considering
making it conditional on the ATAGS endian-ness.

Ben Dooks				http://www.codethink.co.uk/
Senior Engineer				Codethink - Providing Genius

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