27a326dafb
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/$EFI_BOOT_DIR doesn't exist (such as for Ubuntu, /boot/efi/EFI/ubuntu) the current behaviour of running grub-install to generate /boot/efi/EFI/BOOT/BOOTX64.EFI will continue. For distros such as Ubutnu where packaging does not populate /boot/efi/EFI/ubuntu with .efi files, secure boot can be added in the future by copying .efi files to /boot/efi/EFI/ubuntu and copying the shim file to /boot/efi/EFI/BOOT/BOOTX64.EFI. Change-Id: I90925218ff2aa4c4daffcf86e686b6d98d6b0f21
15 lines
542 B
Bash
15 lines
542 B
Bash
export DISTRO_NAME=${DISTRO_NAME:-ubuntu}
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export DIB_RELEASE=${DIB_RELEASE:-bionic}
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export DIB_DEBIAN_COMPONENTS=${DIB_DEBIAN_COMPONENTS:-main,universe}
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export EFI_BOOT_DIR="EFI/ubuntu"
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# There are two default distro mirrors depending on architecture
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ARCH=${ARCH:-}
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if [[ "arm64 armhf powerpc ppc64el s390x" =~ "$ARCH" ]]; then
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default_ubuntu_mirror=http://ports.ubuntu.com/ubuntu-ports
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else
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default_ubuntu_mirror=http://archive.ubuntu.com/ubuntu
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fi
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export DIB_DISTRIBUTION_MIRROR=${DIB_DISTRIBUTION_MIRROR:-$default_ubuntu_mirror}
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