Frantisek Dufka <dufkaf at seznam.cz> wrote: > Luckily 2.6.21 already has kexec for ARM merged so in theory and with > some tweaks (kexec for generic ARM does not mean it works on OMAP2) it > may be possible to boot older kernel from newer one without flashing via > kexec mechanism. I actually had been looking at back-porting kexec into the 2.6.18 kernel. But I just recompiled 2.6.21 with kexec on and patched kexec-tools with arm patches and it does not work for me (the screen just goes blank and eventually the whole device reboots). kexec seems to be really quite simple (code-wise) and so I can't imagine it being that difficult to figure out for someone with a clue about omap.