Am 27. November 2020 04:18:06 MEZ schrieb Elliott Mitchell
:
>The patch to have GRUB load a device-tree is interesting. This is
>certainly worthy of discussion.
>
>Three issues come up when looking though:
>
>First, your patch modifies /etc/grub.d/10_linux, but misses
>/etc/grub.d/10_linux_xen. /etc/grub.d/10_linux_xen needs a fairly
>similar treatment.
>
>Second, rather than having this get buried inside Debian bug #824954,
>you
>should instead file a new bug against grub-common.
>
>Third, there may be a need for extra guarding to ensure these sections
>*only* get invoked on ARM devices (I'm fairly sure the *exact* *same*
>file is shipped for all architectures).
RISC-V uses device-trees too.
Some ARM devices use ACPI instead of device-trees.
The main issue is that fix-ups are not applied by U-Boot when GRUB loads the
device-tree. A UEFI protocol for device tree fix ups would be needed. This
issue has been discussed in this years Device Tree Evolution project
(https://www.linaro.org/engineering/core/devicetree-evolution/).
Best regards
Heinrich
