Stewart Smith posted information about public availability of the OpenPOWER Foundation’s PAPR (Power Architecture Platform Reference) document:
PAPR is the Power Architecture Platform Reference document. It’s a short read at only 890 pages and defines the virtualised environment that guests run in on PowerKVM and PowerVM (i.e. what is referred to as ‘pseries’ platform in the Linux kernel). As part of the OpenPower Foundation, we’re looking at ensuring this is up to date, documents KVM specific things as well as splitting out the bits that are common to OPAL and PAPR into their own documents.
The document appears to be dated March 2015. There are lots of ‘firmware’ references in it! I couldn’t find any other information about this document from the openpowerfoundation.org web site. However, there are two other OpenPOWER specs under public review, due mid-month: