powerpc64 already has bio(4) and bioctl(8) like macppc, but lacks softriad(4), which looks like an oversight.
Neither architecture has boot support, but they still ought to be able to access softraid volumes during install/upgrade. distrib/powerpc64/ramdisk builds and fits; I did not have a free disk (partition) to run-test, but completing the config should be fine. Feedback? Objection? OK? Index: sys/arch/powerpc64/conf/RAMDISK =================================================================== RCS file: /cvs/src/sys/arch/powerpc64/conf/RAMDISK,v retrieving revision 1.12 diff -u -p -r1.12 RAMDISK --- sys/arch/powerpc64/conf/RAMDISK 26 Jun 2022 20:05:06 -0000 1.12 +++ sys/arch/powerpc64/conf/RAMDISK 16 Sep 2023 16:32:42 -0000 @@ -25,6 +25,7 @@ option CRYPTO config bsd root on rd0a swap on rd0b mainbus0 at root +softraid0 at root cpu0 at mainbus? opal0 at fdt? opalcons* at fdt?