crosser,
This question I think would be best answered by WarheadsSE.
However, since it is an OX820, I would look at this u-boot (Note that it is not usable as is for your purpose, I've provided only the NAND version for Pogo V3):
http://forum.doozan.com/read.php?3,16017
I think it would need to be adjusted somewhat for your box (clock, 2 SATA ,...). And booting with SATA can be done, as discussed in this original development thread:
http://archlinuxarm.org/forum/viewtopic.php?f=55&t=6193
Just some ideas to consider.
This question I think would be best answered by WarheadsSE.
However, since it is an OX820, I would look at this u-boot (Note that it is not usable as is for your purpose, I've provided only the NAND version for Pogo V3):
http://forum.doozan.com/read.php?3,16017
I think it would need to be adjusted somewhat for your box (clock, 2 SATA ,...). And booting with SATA can be done, as discussed in this original development thread:
http://archlinuxarm.org/forum/viewtopic.php?f=55&t=6193
Just some ideas to consider.