porting an OS to a known platform which has been done a tonne of times before is very different to trying to create a power efficient, secure and fast OS on har

porting an OS to a known platform which has been done a tonne of times before is very different to trying to create a power efficient, secure and fast OS on hardware that is not yet locked down, let alone released. Moreover the interaction between firmware and the OS is a massive headache to overcome, especially if you are dealing with battery powered devices.