Re: Cubieboard4, u-boot, flash-kernel
On Tue, 2015-12-29 at 12:15 +0100, Karsten Merker wrote:
> On Mon, Dec 28, 2015 at 02:45:33PM -0800, Vagrant Cascadian wrote:
> > I'm trying to get a Cubieboard4 board booting.
> >
> > It looks like the Cubieboard4 has support in mainline linux since
> at
> > least 4.2 (so should work with jessie-backports), but I can't find
> a
> > u-boot that will boot it...
> >
> > I see that Karsten added a flash-kernel entry for it, but it isn't
> > supported in mainline u-boot or sunxi u-boot...
> >
> > I'm wondering where to get a u-boot that'll work with the flash
> -kernel
> > entry, as it would be nice to not have to treat the Cubieboard4 as
> a
> > special snowflake with some ancient vendor u-boot that doesn't
> support
> > device trees and other features needed for modern kernels.
>
> Sorry for the confusion. IIRC somebody from #linux-sunxi had
> mentioned that they had a build of mainline u-boot working on the
> CC-A80, so I added the flash-kernel machine stanza when the
> mainline kernel support was available.
>
> Generic A80 support (Clocks, PIO, RSB, UART, MMC) is available in
> mainline u-boot since v2015.07, but you are of course right - a
> CC-A80-specific config has indeed not yet entered the mainline
> u-boot git, so adding the flash-kernel stanza was probably a bit
> premature.
I'd expect that a pretty trivial modification to
configs/Merrii_A80_Optimus_defconfig (to switch the
CONFIG_DEFAULT_DEVICE_TREE option over) would result in something
useful, but I've not tried it (need to setup my CB4, apply h/sink etc).
Posting on linux-sunxi and/or the u-boot list might result in further
insights.
Ian.
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