On Tue, 2011-04-12 at 19:03 +0200, Joachim Förster wrote:

Note that the default 0x400... is the link address of the zImage
wrapper 
rather than the one of THE kernel.

Currently the link address seems to be hard-coded into
arch/powerpc/boot/wrapper
(a shell script). Since long ago I'm wondering why the maintainers
did 
that. But I guess there is a reason, because it wasn't that way in
the 
old arch/ppc days ;-) ...

Is configuring the zImage-piggy-back-loader through menuconfig & co
evil?

Well, not really evil but if you need a special setting for your board,
you add a case for that board in the wrapper script. The idea is that
the boot wrapper can be build outside of the kernel build tree itself.

IE. A distro could (and sometimes do) ship with the standalone boot
directory, possibly the .o's already built, and will "wrap" the zImage
at install time.

Cheers,
Ben.