[U-Boot] [PATCH] cros: Expand the Chromium OS documentation

Simon Glass sjg at chromium.org
Fri Feb 8 04:11:52 UTC 2019

Hi Tristan,

On Mon, 4 Feb 2019 at 08:01, Tristan Bastian <tristan-c.bastian at gmx.de> wrote:
> Hi Simon,
> I'm using the nyan-big chromebook (tegra124).
> Is it possible to replace coreboot + depthcharge with just u-boot on the internal spi flash?
> If so, do you have some instructions for that?

Possibly, although I would suggest being careful about that. Make sure
you have a tool to revert the flash contents. Note that you will not
have signed firmware so won't get updates. Presumably you are in dev
mode anyway,

The instructions are just to flash the image.bin file that comes out
of the build, once it exists. But there is no chromeos_nyan target as
yet. So your only option right now is to build an image without
verified boot, and use a script to boot Chrome OS. I have not tried on
this nyan.

> At the moment I'm chainloading u-boot, but this is causing some issues with not working LPAE so I'm only getting 2 of my 4GB of memory..
> So I would like to try and run u-boot natively to see if chainloading is the problem or u-boot itself..
> Or maybe you have some instructions to run coreboot + u-boot without depthcharge?

I suppose you could put U-Boot in the image in instead of dc and it might work.



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