On Fri, Jan 11, 2019 at 3:22 PM Gary Palmer <gpalmer at 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 at
chen.org.nz> wrote:
> > >
> > > On Sat, 12 Jan 2019 at 07:55, Stefan Bethke <stb at
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