[RFC] bootwrapper: prevent fdt from being overwritten by kernel

[Mark A. Greer]

On Mon, Oct 30, 2006 at 03:16:57PM +1100, Paul Mackerras wrote:
> Mark A. Greer writes:
> > In addition, I moved the vmlinux elf header decompress code from
> > prep_kernel() to its own routine and called it before platform_init.
> > I then pass the elf header ptr into platform_init.  That way,
> > platform_init can figure out where the end of the kernel will
> > be and put the dtb beyond it.  The OF code can now change
> > claim_base in platform_init instead of needing the platform_ops.image_hdr
> > hook.
> 
> Hmmm.  What if platform_init needs to e.g. turn on caches or do other
> things that need to be done before decompressing?  I think it's
> important to provide some way for the platform code to do things
> really early on.

Good point.  I'll make a separate hook so it'll be platform_init, then
get_elfheader, then call new hook, then open console & do the rest.

Mark