> As a temporary fix we
> use tmpfs for a root FS where we copy everything from an R/O YAFFS2
> partition on bootup and then that partition is unmounted. The second YAFFS2
> partition is mounted R/O under /usr. This is ugly but it works for time
> being.

I don't understand... if everything is mount read-only how do you
change files in the YAFFS2 partition?