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This page describes running FreeBSD on OpenPOWER POWER8 systems, such as the Tyan GN70-BP010. There are two ways to run these machines. FreeBSD targets both.
PowerKVM
PowerKVM is the more mature of the two since it provides a firmware and hypervisor interface matching previous POWER systems. Due to a bug in the IOMMU support, 10.1 will not work on these systems. 11-CURRENT snapshots after Jan. 26 2015 should, however.
Bare Metal
Work is ongoing on the projects/powernv branch. Console IO and interfaces to the OPAL firmware are complete.