[U-Boot] [PATCH 1/1] rockchip: provide installation instruction for Firefly-RK3399.

[Mark Kettenis]

> From: "Dr. Philipp Tomsich" <philipp.tomsich at theobroma-systems.com>
> Date: Mon, 9 Oct 2017 12:31:22 +0200
> 
> > The "pure" U-Boot approach that is currently documented works just
> > fine.  The only problem is that the firefly-rk3399 by default boots
> > from eMMC.  And the first-stage bootloader only recognizes SD-cards
> > with the propriatary loader.  So the trick is to wipe the firmware
> > stored in eMMC or replace it with U-Boot.
> 
> Would you be willing to submit a patch with documentation for this?

I'm still not sure what the right approach is...

Doing what I did (boot into the Ubuntu shipped with the original
firmware and use dd(1) to overwrite the firmware image) almost
certainly isn't.

I suppose the best approach would be to use the "rockusb" mode to
overwrite the eMMC firmware with a "pure" U-Boot image would be the
way to go, but I didn't get that to work using OpenBSD's libusb and I
didn't have a Linux box around.  I plan to come back to that but not
before november :(.

Cheers,

Mark