From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marius Bakke Subject: Re: [PATCH 6/6] gnu: Add grub-efi. Date: Mon, 19 Dec 2016 16:49:18 +0100 Message-ID: <87lgvbc41t.fsf@kirby.i-did-not-set--mail-host-address--so-tickle-me> References: <20161105125511.29383-1-mbakke@fastmail.com> <20161105125511.29383-7-mbakke@fastmail.com> <20161105185803.GA11667@jasmine> <87h97l67kz.fsf@kirby.i-did-not-set--mail-host-address--so-tickle-me> <878tsww9ov.fsf@gnu.org> <87vaw087kr.fsf@kirby.i-did-not-set--mail-host-address--so-tickle-me> <871syny88o.fsf@gnu.org> <87oa1r8wyv.fsf@kirby.i-did-not-set--mail-host-address--so-tickle-me> <871sx73ink.fsf@gnu.org> <87y3zfrd7j.fsf@kirby.i-did-not-set--mail-host-address--so-tickle-me> <87y3zdo6cx.fsf@gnu.org> <87lgvdnw23.fsf@kirby.i-did-not-set--mail-host-address--so-tickle-me> <87lgvc6vp0.fsf@gnu.org> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:46569) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cJ0Bp-0003zV-H2 for guix-devel@gnu.org; Mon, 19 Dec 2016 10:49:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cJ0Bm-00089v-Cz for guix-devel@gnu.org; Mon, 19 Dec 2016 10:49:25 -0500 In-Reply-To: <87lgvc6vp0.fsf@gnu.org> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: Ludovic =?utf-8?Q?Court=C3=A8s?= Cc: guix-devel@gnu.org --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Ludovic Court=C3=A8s writes: > Hi Marius, > > Marius Bakke skribis: > >> Ludovic Court=C3=A8s writes: >> >>>> Relatedly, I think the way to build a 'multi-grub' is to have one >>>> expression for each supported grub platform, and then consolidate >>>> out/lib/grub from each. >>> >>> So in essence, GRUB itself supports only one platform at a time? >> >> AFAICT yes. Gentoo works around this by running the build for each >> user-specified platform and combining the outputs. Most other distros >> just carry separate grub-pc and grub-efi packages. >> >>>>> Now there are things I didn=E2=80=99t quite get. Apparently you=E2= =80=99re supposed to >>>>> have a /boot/efi as a vfat partition, and =E2=80=98grub-install=E2=80= =99 is supposed to >>>>> detect it and install the EFI stuff, or so I thought (info "(grub) >>>>> Installing GRUB using grub-install"). >>>>> >>>>> However, =E2=80=98grub-install=E2=80=99 still seems to be installing = for =E2=80=9Ci386-pc=E2=80=9D >>>>> instead of EFI. >>>>> >>>>> What am I missing? >>>> >>>> IIRC grub-install will detect and install for the running mode (pc, ef= i, >>>> etc). So in a classic chicken-and-egg situation, you need to be booted >>>> with UEFI mode for grub to select the correct installation platform! >>> >>> My understanding is that it would install for UEFI if it fines >>> /boot/efi or if --efi-directory is passed. >> >> I'm not so sure, but it's been a while since I played around with this. >> At least building the 'gnu/system/install.scm' image works fine when >> passing --efi-directory (see the bottom two patches from >> https://lists.gnu.org/archive/html/guix-devel/2016-12/txtchTym4QVKr.txt = ), >> and I think it would choose i386-pc even if x86_64-efi was available >> since the VM boots in BIOS mode. >> >> Tangentially, I'm not aware of any way to build a "hybrid" ISO image >> using only grub. I've started work on packaging syslinux/isolinux which >> is what Debian uses for their hybrid UEFI/BIOS install image. > > OK. > > Having checked GRUB=E2=80=99s configure.ac etc., I realize that my sugges= tion of > having one =E2=80=98grub=E2=80=99 package doing both EFI and =E2=80=9CPC= =E2=80=9D cannot work. What you > suggested initially (a separate =E2=80=98grub-efi=E2=80=99 package) is th= e only thing we > can do (we could perhaps merge the lib/grub directories as you > suggested, but it=E2=80=99s not even clear that this would work.) > > Thus, I think we need to revert 3eee16130d858ae96510ec1c7d38d31290de2699 > and install your initial =E2=80=98grub-efi=E2=80=99 patch. How does that= sound? OK. I'll try to find out why tests don't work with the UEFI variant first in order to at least write a meaningful comment. Maybe qemu needs UEFI support or something like that. --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEu7At3yzq9qgNHeZDoqBt8qM6VPoFAlhYAX4ACgkQoqBt8qM6 VPqwvgf/Sdt0Vu9CvgrnFZsUTFW4QL5UoD5YrD2a1YiU3DhyEayskwEPCzaFqcXV YVEpBTQ7Euz/IMXKFGtB9w6Zrneg7EOqYWklV5T6J9rCyVLA/O6wcvPzjKNpAy1t 3mehJGhoZWHBOQPLS2kPAmwuMdMv/zWiK20zc9XYRDcTdd4iXM0VJWS6UDfXkjwV zH8B6JLCergZxI1PQqF3KfhmMDGC9N0Dbueb8kj99ky85Kr/x1mkYBZvd6fv8uRw heECrg5CmDNsDXRbctSecTr7HCtNFsrWjynQW+dQISZvZNv1wVV2WwqVgeIsp+Nq 7O3BFfx6fdM0fgNH+JP1I94yTiEmsQ== =OsXH -----END PGP SIGNATURE----- --=-=-=--