how to copy barebox to flash?

[Allen Kennedy Jr.]

All,
  How do I copy barebox to flash?
I have a flash device setup:
     `---- imx_nand
          `---- nand0
               `---- 0x00000000-0x0fffffff: /dev/nand0
               `---- 0x00000000-0x0001ffff: /dev/bootstrapper
               `---- 0x00020000-0x0005ffff: /dev/barebox
               `---- 0x00060000-0x0009ffff: /dev/env_raw
               `---- 0x00100000-0x005fffff: /dev/kernel

I used JTAG to load barebox into memory at 0xa0000000

I just can't figure out how to copy it to flash... There is no DD command...
I tried this:
cp 0xa0000000 /dev/barebox 0x4000
got :
cp: target `0x4000' is not a directory

Seems barebox changed what 'cp' is from the old u-boot way.
and the nand command only does bad block handling...

barebox-update seems to be a candidate, but the docs don't make sense
on how to use.
Also I was thinking something like md > /dev/nand, but the output of
MD is user readable.