On Sun, Feb 28, 2021 at 9:48 AM Kevin Bowling <kevin.bowl...@kev009.com> wrote:
> This got me interested because I did recall something like Warner > mentioned. It seems like some of the folks that used to be at OzLabs > did it as a PoC > > https://www.flamingspork.com/blog/2015/10/20/tianocore-uefi-ported-to-openpower/ > . > Ah yes, it was OzLabs' tianocore port that I recalled. > One of the exciting things about OpenPower was that everything above > the gates was open in a way only RISC-V seems a chance of repeating > any time soon. There are no practical limits to the firmware and > runtime service; if you haven't seen this you both might enjoy it > > https://www.flamingspork.com/blog/2016/10/30/windows-nt4-for-powerpc-guest-on-opal-on-power8-in-qemu/ > . > > Practically speaking, with Petitboot (which FreeBSD on PowerNV uses) > there isn't much point to go to something like UEFI. It's literally > Unix vs DOS-like. The primary targets are Raptor POWER9 hardware and > LoPAPR/LoPAR VMs (kvm, PowerVM) and I don't see any near term > indication of the ISA expanding to new platforms that would concern > FreeBSD. > Yes. I agree as well. I was just hoping to say just that: EFI is barely theoretically possible, but in reality we'll likely never use it.... The net effect is that we don't want to install efi on powerpc on freebsd. Warner > Regards, > Kevin > > On Sat, Feb 27, 2021 at 8:18 PM Warner Losh <i...@bsdimp.com> wrote: > > > > On Sat, Feb 27, 2021, 8:01 PM Brandon Bergren <bdra...@freebsd.org> > wrote: > > > > > On Sat, Feb 27, 2021, at 8:39 PM, Warner Losh wrote: > > > > > 32-bit Arm can boot via EFI. Just mips* and powerpc*. > > > > > > > > There was some rumblings of little endian powerpc64 efi, but I don't > > > > think it's ready... > > > > > > I've never heard of such things. PAPR/LoPAPR/LoPAR (pseries) is > specified > > > as an OpenFirmware platform, and I don't see that changing in the > future > > > given the way it's baked into the spec. And PowerNV is a > > > minimal-runtime-services platform where the runtime abstraction (OPAL) > > > calls don't include any sort of way to access disk devices. > > > > > > Do you mean alternative firmware for PowerNV? I've heard people > talking on > > > and off about coreboot, but I don't see that becoming mainstream over > the > > > petitboot skiroot payload. > > > > > > I don't see the pseries virtualization requirements changing away from > > > OpenFirmware in the future either, given the OpenFirmware requirement > has > > > been a constant all the way back to CHRP. > > > > > > > > > There was a working group that was defining powerpc bindings that were > > being worked on. When I went back to find them again I couldn't, so maybe > > they came to naught... > > > > Warner > > > > > > > > > Yea, we have long since switched our preferred boot on arm to EFI... > > > > though we don't have installer images for 32bit arm, which is this > > > > runs... so it's needed for correctness, but not a practical > > > > difference... > > > > > > > > Warner > > > > > > -- > > > Brandon Bergren > > > bdra...@freebsd.org > > > > > _______________________________________________ > > dev-commits-src-m...@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/dev-commits-src-main > > To unsubscribe, send any mail to " > dev-commits-src-main-unsubscr...@freebsd.org" > _______________________________________________ dev-commits-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "dev-commits-src-all-unsubscr...@freebsd.org"
