+Richard On 10/5/21 14:29, Thomas Huth wrote: > On 05/10/2021 14.20, BALATON Zoltan wrote: >> On Tue, 5 Oct 2021, Cédric Le Goater wrote: >>> On 10/5/21 08:18, Alexey Kardashevskiy wrote: >>>> On 05/10/2021 15:44, Christophe Leroy wrote: >>>>> Le 05/10/2021 à 02:48, David Gibson a écrit : >>>>>> On Fri, Oct 01, 2021 at 04:18:49PM +0200, Thomas Huth wrote: >>>>>>> On 01/10/2021 15.04, Christophe Leroy wrote: >>>>>>>> Le 01/10/2021 à 14:04, Thomas Huth a écrit : >>>>>>>>> On 01/10/2021 13.12, Peter Maydell wrote: >>>>>>>>>> On Fri, 1 Oct 2021 at 10:43, Thomas Huth <th...@redhat.com> >>>>>>>>>> wrote: >>>>>>>>>>> Nevertheless, as long as nobody has a hint where to find that >>>>>>>>>>> ppc405_rom.bin, I think both boards are pretty useless in >>>>>>>>>>> QEMU (as far as I >>>>>>>>>>> can see, they do not work without the bios at all, so it's >>>>>>>>>>> also not possible >>>>>>>>>>> to use a Linux image with the "-kernel" CLI option directly). >>>>>>>>>> >>>>>>>>>> It is at least in theory possible to run bare-metal code on >>>>>>>>>> either board, by passing either a pflash or a bios argument. >>>>>>>>> >>>>>>>>> True. I did some more research, and seems like there was once >>>>>>>>> support for those boards in u-boot, but it got removed there a >>>>>>>>> couple of years ago already: >>>>>>>>> >>>>>>>>> https://gitlab.com/qemu-project/u-boot/-/commit/98f705c9cefdf >>>>>>>>> >>>>>>>>> https://gitlab.com/qemu-project/u-boot/-/commit/b147ff2f37d5b >>>>>>>>> >>>>>>>>> https://gitlab.com/qemu-project/u-boot/-/commit/7514037bcdc37 >>>>>>>>> >>>>>>>>>> But I agree that there seem to be no signs of anybody actually >>>>>>>>>> successfully using these boards for anything, so we should >>>>>>>>>> deprecate-and-delete them. >>>>>>>>> >>>>>>>>> Yes, let's mark them as deprecated now ... if someone still uses >>>>>>>>> them and speaks up, we can still revert the deprecation again. >>>>>>>> >>>>>>>> I really would like to be able to use them to validate Linux Kernel >>>>>>>> changes, hence looking for that missing BIOS. >>>>>>>> >>>>>>>> If we remove ppc405 from QEMU, we won't be able to do any >>>>>>>> regression >>>>>>>> tests of Linux Kernel on those processors. >>>>>>> >>>>>>> If you/someone managed to compile an old version of u-boot for >>>>>>> one of these >>>>>>> two boards, so that we would finally have something for >>>>>>> regression testing, >>>>>>> we can of course also keep the boards in QEMU... >>>>>> >>>>>> I can see that it would be usefor for some cases, but unless someone >>>>>> volunteers to track down the necessary firmware and look after it, I >>>>>> think we do need to deprecate it - I certainly don't have the >>>>>> capacity >>>>>> to look into this. >>>>>> >>>>> >>>>> I will look at it, please allow me a few weeks though. >>>> >>>> Well, building it was not hard but now I'd like to know what board >>>> QEMU actually emulates, there are way too many codenames and PVRs. >>> >>> yes. We should try to reduce the list below. Deprecating embedded >>> machines >>> is one way. >> >> Why should we reduce that list? It's good to have different cpu >> options when one wants to test code for different PPC versions (maybe >> also in user mode) or just to have a quick list of these at one place. > > I think there are many CPUs in that list which cannot be used with any > board, some of them might be also in a very incomplete state. So > presenting such a big list to the users is confusing and might create > wrong expectations. It would be good to remove at least the CPUs which > are really completely useless.
Maybe only remove some from system emulation but keep all of them in user emulation?
