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Turns out gcd works fine after adding /boot/grub/grub.cfg in the img,
as that's the path that gets hardcoded, and adding the EFI/debian/
grub.cfg was not necessary, so remove it.
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For secured boot in binary_grub-efi, the gcdx64.efi.signed is
the boot loader for removable device, like CD or USB flash drive,
while grubx64.efi.signed is for hard drive. Therefore for live system,
use gcdx64.efi.signed for amd64 and gcdaa64.efi.signed for arm64.
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When using Secure Boot, grub2 as built by Debian will now load a config
file from EFI/$VENDOR instead of having EFI/debian hardcoded.
$VENDOR comes from dpkg-vendor or from the user building grub2.
The vendor string is stored in the control metadata as Efi-Vendor, so
retrieve it when building the EFI image.
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The Tianocore reference UEFI implementation, used for example by Qemu,
wants the EFI directory name to be uppercase in the fat32 partition
when Secure Boot is enabled, and will fail to load otherwise.
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Support for UEFI Secure Boot is modelled after how it currently works
in Ubuntu and on how it is going to work on Debian.
A minimal bootloader, shim, is used as the first-stage and it then
loads grub. Both have to be signed.
shim-signed is already available in Debian so the filenames are
already established, and the grub2 repository and packaging is common
between the 2 distros so we can already be reasonably sure of what it
is going to be.
So if both are available, copy /usr/lib/shim/shim[x64|aa64].efi.signed
as boot[x64|aa64].efi so that UEFI loads it first, and copy
/usr/lib/grub/[x86_64|arm64]-efi-signed/grub[x64|aa64].efi.signed as
grub[x64|aa64].efi.
This grub2 EFI monolithic image is currently hard-coded in grub2's
repository to look for a config file in efi/debian, so make a copy
of the previously added minimal grub.cfg that loads the real one in
that directory in both the fat32 and ISO 9660 partitions.
The new option --uefi-secure-boot can be set to auto (default,
enable or disable.
In auto, the lack of the signed EFI binaries is intentionally left as a
soft failure - live-build will simply fallback to using the locally
generated non-signed grub2 monolithic EFI binary as the only
bootloader. Given the difficulties surrounding the Secure Boot
signing infrastructure this approach gives the most flexibility and
makes sure things will "just work" once the packages are available,
without the need to change anything in the configuration.
This will also greatly help downstream distributions and users who
want to do self-signing.
The enable or disable options work as expected.
Closes: #821084
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On some UEFI implementations, like the AMI found in the Supermicro
X10SDV-TP8F development board, the fat32 partition will be loaded
first and so Grub will set it the root, and then drop to the console
as it cannot find any config on it.
Add a minimal grub.cfg that allows Grub to find the main config on
the ISO 9660 partition and load it.
Closes: #892406
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Closes: #885692
Fixes: !2
Signed-off-by: Raphaël Hertzog <hertzog@debian.org>
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Since commit fdc9250bc (Changing package dependency checks within chroot
to work outside as well), Check_package automatically checks for
LB_BUILD_WITH_CHROOT and works inside as well as outside of the chroot,
so no need to check LB_BUILD_WITH_CHROOT before calling them.
Install_package and Remove_package are just a no-op when building
without chroot, so they can also be called unconditionally.
Restore_cache and Save_cache do not check LB_BUILD_WITH_CHROOT but it
it should not hurt to call them when not needed (which already happened
in some cases).
This commit makes all Check_package calls unconditional on
LB_BUILD_WITH_CHROOT.
For binary_syslinux, this fixes the check (which used outdated paths
outside the chroot since 7b6dfd9d1), for binary_grub-efi,
binary_package-lists and chroot_package-lists this simplifies the code
(but also causes the check to become package-based instead of file-based
on apt-based systems), and for binary_loadlin and binary_win32-loader
this adds the check outside the chroot which was previously missing.
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This work is based on debian-cd team work and uses,
as much as possible, the same mkisofs options
than the Debian Installation CD disk does.
It assumes that /boot/grub/grub.cfg (and other design items)
is generated by: binary_loopback_cfg .
It relies on efi-image and grub-cpmodules being setup
as build scripts on live-build package.
In the future event of these two files being moved
to a binary package (they are originally from:
src: live-installer) the binary_grub-efi script would have
to be rewritten to take the new paths into account.
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