Hello,

> the kernels have to be sufficiently similar (at least for the old 
> implementation) to work.

  locore.s/kernel_reload() is unchanged (BTW, I think OPT_DEVRELOAD is
  missing there) thus that constraint is still there. I am not quite sure
  why that check exists. Why shouldn't it be possible to reboot a kernel
  with a different layout? Maybe the check was there to ensure that the
  passed file really is a kernel?
  I would like to see the use of chipmem vanish. This would require to
  copy the loader at the end of of the loaded kernel image and run the
  code from there. Is that possible?

  Gunther