Add AMT Hash to bios

I am looking at adding our custom Cert to a range of our Dell systems for OOB Management in SCCM.  I have seem some documentation on Intel's site on creating a bin file to deploy with a USB stick but the deployment process is not so clear.  I have also seen some references to deploying a custom bios via SCCM.  If this is possible can some one point me in the direction of how to create a bios with a custom Cert Hash, and how to deploy it?