** Description changed: - In live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi-non-cloud.binary - we currently write file /etc/flash-kernel/machine to control which - device-tree is copied to /boot and in subsequently to generate a - devicetree comand in grub.cfg. - - We have only one image for the VisionFive 2 board but there are two - revisions (1.2A, 1.3B) which require different device-trees. + In live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi-non-cloud.binary we currently write file /etc/flash-kernel/machine to control which device-tree is copied to /boot and in subsequently to generate a devicetree command in grub.cfg. + So + We have only one image for the VisionFive 2 board but there are two revisions (1.2A, 1.3B) which require different device-trees. Instead of writing /etc/flash-kernel/machine, all device-trees of the current kernel could be copied to /boot/efi/dts/. U-Boot will then search this directory for a file called $filename and load it. Whenever the kernel will be updated, flash-kernel will copy the updated device- tree to /boot and GRUB will pick it up. [ Impact ] * This lets us build more generic images [ Test Plan ] * After creating risc-v images with the proposed solution, it can be checked that all the device trees are in /boot/dtbs, that the kernel is correctly exposing the machine from the firmware provided device tree in - /proc/device-tree/model, and that grub.cfg has no devicetree entry yet. + /proc/device-tree/model, and that grub.cfg has no device tree entry yet. It can be then checked that after a kernel update the file - /boot/dtb-$kernel_version is created and a devicetree entry is created + /boot/dtb-$kernel_version is created and a device tree entry is created by update-grub.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2092205 Title: Using /etc/flash-kernel/machine in risc-v images does not permit building generic images To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/2092205/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
