So, Intel's Z6xx solutions support secure boot and OTP fuses in the Platform Controller Hub. I have looked through the documentation on the MP20 and it says nothing about secure boot or silicon fuses. Is this information confidential?
Since you are using Intel® Atom, I want to make you aware of a special place to go with your technical questions. The Intel e-Help desk is staffed by Intel representatives dedicated to answering embedded Intel® architecture product, design and development questions for select Intel processors..
The Intel e-Help desk is only available to registered privileged users. Before you can access e-Help, you will first have to upgrade your community membership to privileged status. Privileged account status also allows you to access special documents and tools at the Intel® Embedded Design Center. Note that it usually takes a few days for the approval process, and it normally requires that your company has a Non-Disclosure Agreement (NDA) with Intel. If you are interested, follow the link below to your 'My Account' page and request privileged access.
(Look for this on the right side of page: Manage Intel ® Embedded Design Center Privileged Account )
I hope this helps
J. Felix McNulty
Community Moderator (Intel contractor)