To create a RAMDISK:

o Enable RAMDISK and initrd support in your kernel under Block
  devices.  
  - also uncomment the lines for 'ramdisk.s' in arch/bsp/kernel/Makefile

o To create the filesystem, run (as root)

  ./mkinitrd

  This creates the ramdisk image and copies the local etc and bin 
  directories to it.

o Make ramdisk assembly code that can be compiled/linked

  make clean; make

  This creates a ramdisk.s in arch/bsp/kernel that will be compiled
  into the kernel when CONFIG_BLK_DEV_INITRD is enabled.

o When linux boots and mounts the initrd, it will try to run
  /linuxrc off the initrd.  For testing, I just used set /linuxrc to
  be a symlink to /bin/busybox

