My Recovery Console is like another operating system which can bootmenu load (it is only shell script). It needs kernel with framebuffer support (kernel-power). I think it is now finished and I will push it to extras-devel.
Thread here: http://talk.maemo.org/showthread.php?t=72726

Kexec is prorgram which can load and execute new linux kernel if another is running. But I was not able to get it working :-( In PR 1.3 stock kernel (https://bugs.maemo.org/show_bug.cgi?id=3745) is written that has for it support, but stock and kernel-power give me only black screen after executing kexec...

Some info is here: http://lists.meego.com/pipermail/mee...ay/002277.html

... But kexec has own thred: http://talk.maemo.org/showthread.php?t=70083 We can move here.