Date: Sun, 28 Feb 2021 09:48:25 -0700 From: Kevin Bowling <kevin.bowling@kev009.com> To: Warner Losh <imp@bsdimp.com>, Brandon Bergren <bdragon@freebsd.org> Cc: Jessica Clarke <jrtc27@freebsd.org>, Nathan Whitehorn <nwhitehorn@freebsd.org>, Colin Percival <cperciva@tarsnap.com>, src-committers <src-committers@freebsd.org>, "<dev-commits-src-all@freebsd.org>" <dev-commits-src-all@freebsd.org>, dev-commits-src-main@freebsd.org Subject: Re: git: 0b7472b3d8d2 - main - Mount the EFI system partition (ESP) on newly-installed systems. Message-ID: <CAK7dMtD9k5FscvG754tLO6ZeTm5%2Bru87F06O8%2BH3bVJqVjf9iQ@mail.gmail.com> In-Reply-To: <CANCZdfqPNf-RW=-T9qk5a4o-rX3CWFVGz0H_hTav-CqnW9JJ=Q@mail.gmail.com> References: <202102232124.11NLOT27012354@gitrepo.freebsd.org> <01000177d0e7f033-389acb59-2004-4040-ba7c-762878ef86b4-000000@email.amazonses.com> <dba58a1f-5eb0-da87-7d18-d930aa5d422a@freebsd.org> <CANCZdfoL3QFg9NvpkPW8pfVrNvUK-cTPD2ZGbBr2xxh-0dv=eA@mail.gmail.com> <dc61048c-2cfa-0ff5-0470-e93aa5233aae@freebsd.org> <583f83d8-c78b-d961-d2c5-9693bd36563b@freebsd.org> <743fd126-2077-49b1-9c85-7ccc61616b98@www.fastmail.com> <460ceb98-e0c1-42b3-8e3c-2587c5ce8398@www.fastmail.com> <F4E1978D-DE96-4082-885F-D6686A5D005C@freebsd.org> <CANCZdfpw1%2BsjHVPH4zahywMsLHJ1jKWbnd5A3RjGinu=nQFSGA@mail.gmail.com> <a30870ef-00b1-40b6-b378-033d8737c7e4@www.fastmail.com> <CANCZdfqPNf-RW=-T9qk5a4o-rX3CWFVGz0H_hTav-CqnW9JJ=Q@mail.gmail.com>
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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/. 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. Regards, Kevin On Sat, Feb 27, 2021 at 8:18 PM Warner Losh <imp@bsdimp.com> wrote: > > On Sat, Feb 27, 2021, 8:01 PM Brandon Bergren <bdragon@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 > > bdragon@FreeBSD.org > > > _______________________________________________ > dev-commits-src-main@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/dev-commits-src-main > To unsubscribe, send any mail to "dev-commits-src-main-unsubscribe@freebsd.org"
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