On Tue, Nov 26, 2024 at 02:49:49PM +1100, Michael Ellerman wrote: > Segher Boessenkool <seg...@kernel.crashing.org> writes: > > On Fri, Nov 15, 2024 at 12:11:04AM +1100, Michael Ellerman wrote: > >> CHRP (Common Hardware Reference Platform) was a standard developed by > >> IBM & Apple for PowerPC-based systems. > >> > >> The standard was used in the development of some machines but never > >> gained wide spread adoption. > >> > >> The Linux CHRP code only supports a handful of machines, all 32-bit, eg. > >> IBM B50, bplan/Genesi Pegasos/Pegasos2, Total Impact briQ, and possibly > >> some from Motorola? No Apple machines should be affected. > >> > >> All of those mentioned above are over or nearing 20 years old, and seem > >> to have no active users. > > > > This was used by all non-IBM 970 systems as well. The last was SLOF on > > JS20 and JS21, about 20 years ago yes, and I doubt anyone uses it still > > (I don't). > > By "this" you mean the CHRP standard?
I mean the "maple" stuff, and the whole "chrp" thing in PowerPC Linux. > At least in Linux the "CHRP" platform has always been 32-bit only AFAIK. No? I've written stuff for it for years :-) > My memory is that JS20/JS21 used the "maple" platform, which was a > 64-bit only bare-metal platform, possibly it was actually == CHRP, but > we didn't call it that in Linux. Well, it is what it is called in the Open Firmware device trees! It has a root "device_type" property that starts with the string "chrp". But that really is only because Yaboot for some reason needs it to behave reasonably, heh. (I didn't remember the details, but I still have the original SLOF open source release tarballs :-) ) So yeah it wasn't anything "chrp" in Linux itself, aha. > But maybe I'm wrong, you were more involved than me back than, and it > was a long time ago :) Very long ago. Sad to see it go, but the Git tree will never forget :-) Segher
