Date: Fri, 11 Jan 2019 15:47:45 -0700 From: Warner Losh <imp@bsdimp.com> To: Gary Palmer <gpalmer@freebsd.org> Cc: Kyle Evans <kevans@freebsd.org>, freebsd-stable stable <freebsd-stable@freebsd.org>, Stefan Bethke <stb@lassitu.de>, Jonathan Chen <jonc@chen.org.nz> Subject: Re: Trouble booting from EFI with 12-stable Message-ID: <CANCZdfq54cO7vv%2B98Pc2VHVk%2BdZ3v_wq1wxW7KNRLFx3T-4vGA@mail.gmail.com> In-Reply-To: <20190111222116.GA45377@in-addr.com> References: <2E0A45C1-1E0A-42FB-A403-04EF611DB812@lassitu.de> <CACNAnaHc_wus-t=J7eH8Uwsiq=svUrJTX2jS0Tp=hkuxJcwyGg@mail.gmail.com> <97B2B194-D1B6-4CC0-BAC2-8167ECDB3182@lassitu.de> <1B65638D-C68B-4995-9170-DB34D8051B21@lassitu.de> <CAJuc1zMQC6bmpM_gJV3GK6ZSbF_OuJ6Z3S6VTYKD9snKiDwsXg@mail.gmail.com> <CACNAnaFnX3UGUr9sWL0pBMqaOK6_2C1NEaZQOHf99xH71JAjiA@mail.gmail.com> <20190111222116.GA45377@in-addr.com>
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On Fri, Jan 11, 2019 at 3:22 PM Gary Palmer <gpalmer@freebsd.org> wrote: > On Fri, Jan 11, 2019 at 01:18:35PM -0600, Kyle Evans wrote: > > On Fri, Jan 11, 2019 at 1:15 PM Jonathan Chen <jonc@chen.org.nz> wrote: > > > > > > On Sat, 12 Jan 2019 at 07:55, Stefan Bethke <stb@lassitu.de> wrote: > > > [...] > > > > The UEFI man page has a good explanation of which files are involved > in booting: > > > > > https://www.freebsd.org/cgi/man.cgi?query=uefi&sektion=8&manpath=freebsd-release-ports > > > > > > > > I mounted the ESP and copied /boot/boot1.efi to > /boot/efi/EFI/BOOT/BOOTX64.EFI. Surprisingly, the new boot1.efi is much > smaller than what I had before (according to the timestamp from November), > but using that, booting seems to be restored. > > > > > > > > # grep efi /etc/fstab > > > > /dev/ada0p2 /boot/efi msdos rw,noauto 0 > 0 > > > > # mount /boot/efi > > > > # ls -l /boot/efi/EFI/BOOT/BOOTX64.EFI > /boot/efi/EFI/BOOT/bak/BOOTX64.EFI > > > > -rwxr-xr-x 1 root wheel 81920 Jan 11 18:43 > /boot/efi/EFI/BOOT/BOOTX64.EFI* > > > > -rwxr-xr-x 1 root wheel 410112 Nov 25 16:27 > /boot/efi/EFI/BOOT/bak/BOOTX64.EFI* > > > > > > While the uefi(8) man page suggests that boot1.efi should be used, > > > loader.efi can also substituted. I believe the release images use > > > loader.efi instead of boot1.efi, as it's slightly more efficient. > > > > > > > Indeed, boot1.efi is a hack that's going to get kicked out of the tree > > in due time. > > Can I request a clarification in the man page? At least in 11.2 the > uefi(8) man page state > > -- QUOTE -- > 2. boot1.efi reads boot configuration from /boot.config or > /boot/config. Unlike other first-stage boot loaders, > boot1.efi passes the configuration to the next stage boot > loader and does not itself act on the contents of the file. > -- QUOTE -- > > It's not 100% clear, although implied by the fact that the next step > looks for freebsd-ufs or freebsd-zfs partitions, that the boot.config is > loaded from the ESP (at least I'm guessing that's where it's loaded > from). Could the location of where boot.config is loaded from be > clarified please? > In 11.2, boot1.efi was used to load the next stage of the boot process (which was /boot/loader.efi off either a UFS or ZFS filesystem based on a number of heuristics). The boot.config was loaded from the same filesystem loader.efi was loaded from, and not the ESP. Warner
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