Hi Mark,
On Sun, 8 Jan 2023 at 03:25, Mark Kettenis mark.kettenis@xs4all.nl wrote:
From: Simon Glass sjg@chromium.org Date: Sat, 7 Jan 2023 19:50:24 -0700
With EFI booting the device tree is required but is not actually specified in any way. The normal method is to use a fdtfile environment variable to get the filename, then look for that file on the media.
Implement this in the bootmeth.
Signed-off-by: Simon Glass sjg@chromium.org
Hi Simon,
The distroboot scripts also reads dtb files from the root directory of the ESP (so without the "dtb/" prefix). This code needs to do that as well otherwise some folks will run with a different device tree after switching to bootstd.
The construction of a fallback dtb filename based on soc, board and boardver is only done for (32-bit) arm and not for arm64. It isn't done for riscv either. That feels to me like someone recognized that was a bit of a mistake and shouldn't be done for modern targets. So I think that code should be under the same
#if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
as it is now in config_distro_bootcmd.h.
OK, thanks for that. Yes I deliberately dropped that in the hope that we can have one standard.
I will send a patch to add that.
Regards, Simon