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diskimage-builder/diskimage_builder/elements/opensuse-minimal
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Steve Baker 27a326dafb Support secure-boot bootloader where possible 
As of grub2 >= 2.02-95 on redhat family distros, calling grub2-install
on an EFI partition will fail with: "this utility cannot be used for
EFI platforms because it does not support UEFI Secure Boot."

This version of grub is now in centos8-stream and non-eus repos of
RHEL-8. It is not currently possible to build whole-disk UEFI images
on these distros, and when this package is promoted this will also
affect centos8 and RHEL-8 eus. The grub maintainers made this change
because the grub2-install generated /boot/efi/EFI/BOOT/BOOTX64.EFI
will never be capable of booting with Secure Boot.

This change defines a $EFI_BOOT_DIR for every distro element. When
directory /boot/efi/$EFI_BOOT_DIR exists a grub.cfg file in will be
generated there. This change also installs the shim package on redhat
family distros, which installs a copy of the shim bootloader to
/boot/efi/EFI/BOOT/BOOTX64.EFI. Using centos as an example, this
allows UEFI to boot the shim /boot/efi/EFI/BOOT/BOOTX64.EFI which
then chains to /boot/efi/EFI/centos/grubx64.efi.

If /boot/efi/$EFI_BOOT_DIR doesn't exist (such as for Ubuntu,
/boot/efi/EFI/ubuntu) the current behaviour of running grub-install to
generate /boot/efi/EFI/BOOT/BOOTX64.EFI will continue. For distros
such as Ubutnu where packaging does not populate /boot/efi/EFI/ubuntu
with .efi files, secure boot can be added in the future by copying
.efi files to /boot/efi/EFI/ubuntu and copying the shim file to
/boot/efi/EFI/BOOT/BOOTX64.EFI.

Change-Id: I90925218ff2aa4c4daffcf86e686b6d98d6b0f21
2021-03-11 10:27:59 +13:00
..
environment.d Support secure-boot bootloader where possible 2021-03-11 10:27:59 +13:00
test-elements/opensuse15-build-succeeds Rename openSUSE 15.1 testing to 15 2019-08-30 22:44:40 +02:00
element-deps Clear /etc/machine-id to avoid duplicate machine-ids 2017-08-06 13:56:58 -04:00
element-provides Merge remote-tracking branch 'origin/master' into merge-branch 2016-11-29 07:43:46 +11:00
README.rst Update test coverage for openSUSE/-minimal to 15.1 2019-06-13 09:20:40 +02:00

README.rst 

================
opensuse-minimal
================

This element will build a minimal openSUSE image. It requires 'zypper' to be
installed on the host.

These images should be considered experimental. There are currently only x86_64
images.

Environment Variables
---------------------

DIB_RELEASE
  :Required: No
  :Default: 15.1
  :Description: Set the desired openSUSE release.