POWER9 [FreeBSD WIKI]

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powerpc/POWER9 is supported by %%FreeBSD%%'s powerpc/powerpc64.  Both powernv (%%OpenPOWER%% and Linux-only servers from IBM that run OPAL firmware) and pseries (VMs under KVM or LPARs and VMs with pHyp firmware) are supported.

This is most commonly run on desktops from [[https://www.raptorcs.com/|Raptor Computing Systems]] although it should run on all known POWER9 systems due to common architecture.  There is an official full system simulator in ports emulators/linux-power9-functional-sim for doing development.

Out of tree tracking of issues required for feature parity at: [[https://www.github.com/POWER9BSD/freebsd|PowerBSD]]

Projects/To Do list (unsorted):
  * <del>ifunc support (need newer linker than src binutils)</del>
  * <del>Radix page tables</del> -- committed, pass radix_mmu=1 in the kernel command line to use it
  * superpages                                               -- **WIP**
  * kernel core dumps                                        -- **WIP**
  * <del>XIVE interrupt controller</del>
  * ppc64le port
  * %%LinuxKPI%% (amdgpu)
  * PMAP fixes to handle DRI (pmap_change_attr(), pmap_page_set_memattr(%%))%%
  * bhyve
  * HWPMC
  * topology specification (ULE)
  * Linuxulator
  * kgdb support
  * <del>llvm toolchain</del>
  * iflib bge support (Talos II / Blackbird on board ethernet)
  * asm for hot functions like memcpy and bzero in kernel
  * <del>asm for hot functions in libc</del>
  * options EARLY_AP_STARTUP

Investigate HW support:
  * mpr(4) not working for mmacy, endian issue?  mps(4) seems to work elsewhere i.e. sparc64 so check delta between drivers
  * <del>ixl(4) is set as amd64 only, base gcc issue?</del>

The following adapters homologated on POWER9 Boston (Type/Model: 9006-22P) are lacking proper driver support:
  * <del>Serial Attached SCSI controller: Adaptec Series 8 12G SAS/PCIe 3 (rev 01)</del>
  * RAID bus controller: LSI Logic / Symbios Logic %%MegaRAID%% SAS-3 3108 [Invader] (rev 02) 

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{{tag>Todo}}