I am trying to build a kernel with embedded filesystem for use as a diskless
system. We have 8MB of flash available. As soon as my kernel grows above 4MB
in size (which happens when I increase my memory disk image above 3MB), it
doesn't boot properly - it gets to     bootstrap done.
init subsystems: stacks vectors undefined pmap

and no further. Is there something limiting the kernel to a certain size, or
memory disks to a certain size? It works perfectly as soon as I decrease the
size below 4MB.

Thanks
 Bruce