That SOM was designed with collaboration with TI. We provided the hardware and TI wrote the software. Unfortunately, we don't have much for examples on that.
I am sorry, but I would have to refer you to TI.
I did a little searching and I found:
http://processors.wiki.ti...ndex.php/TI_SATA_FAQ According to the above link, it suggests "Please contact BIOS PSP Lead for any query related AM18X BIOS SATA support."
The AM1808 and L138 are related, but the AM1808 doesn't have the L138's DSP.
adam