> From: klaus.go...@theobroma-systems.com > Date: Mon, 19 Mar 2018 08:17:49 +0100 > > > On 17.03.2018, at 09:48, Mark Kettenis <kette...@openbsd.org> wrote: > > > > Signed-off-by: Mark Kettenis <kette...@openbsd.org> > > Acked-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com> > > --- > > include/configs/rk3399_common.h | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/include/configs/rk3399_common.h > > b/include/configs/rk3399_common.h > > index d700bf2549..9a5de3a7e3 100644 > > --- a/include/configs/rk3399_common.h > > +++ b/include/configs/rk3399_common.h > > @@ -59,6 +59,7 @@ > > #include <config_distro_bootcmd.h> > > #define CONFIG_EXTRA_ENV_SETTINGS \ > > ENV_MEM_LAYOUT_SETTINGS \ > > + "fdtfile=rockchip/" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \ > > "partitions=" PARTS_DEFAULT \ > > BOOTENV > > > > This assumes that the devicetree files in U-Boot and the OS are the > same. As it's our goal to keep Linux devicetrees in sync > with U-Boot this patch should be fine in the long-term. But at the > moment this only applies for rk3399-firefly (on Linux).
Hi Klaus, As far as I understand things loading the "final" device tree passed to the OS (or EFI bootloader) from disk is more or less a generic "distro" boot feature. The device trees don't really need to be the same. As long as the final device tree has the right hooks for U-Boot to pass along things like Ethernet MAC addresses and framebuffer setup things should just work. This feature allows the device tree to be updated without recompiling U-Boot to include a new device tree. I use this feature quite extensively on other boards to use the latest Linux mainline kernel device trees that often include additional devices or important fixes. I suppose on Linux systems GRUB has support for loading a new device tree. But in that case any changes made by U-Boot will be lost. > Mark, where would one find the devicetrees included in OpenBSD? > I looked in sys/arch/amd64 but couldn'tfind any. As Jonathan already indicated, we use the Linux device trees on OpenBSD. > Anyhow, I'm fine with that change. Great! > Tested-by: Klaus Goger <klaus.go...@theobroma-systems.com> Thanks! _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
