[U-Boot] [PATCH 18/20] Add Chrome OS config header

[Stephen Warren <swarren@wwwdotorg.org>]

On 02/17/2015 03:29 PM, Simon Glass wrote:
> From: Doug Anderson <dianders@chromium.org>
>
> This header includes useful scripts which can be used with any board that
> can boot Chrome OS.
>
> In particular, 'run nvboot' will boot a board without verified boot enabled.

I think this needs a bit of minification for an upstream U-Boot. In 
particular, many of the environment variables overlap semantically or by 
name with those from include/config_distro_*.h, and I'd like to see any 
U-Boot for the Tegra Chromebooks (at least) support booting both 
ChromeOS kernels and arbitrary distros using the environment from 
config_distro_bootcmd.h.

> diff --git a/include/configs/chromeos.h b/include/configs/chromeos.h

> +/* Stringify a token */
> +#ifndef STRINGIFY
> +#define _STRINGIFY(x)	#x
> +#define STRINGIFY(x)	_STRINGIFY(x)
> +#endif

Shouldn't that be in some common header so it isn't ever duplicated?

> +#define CONFIG_CROS_FULL

There are a ton of macros in here without much in the way of 
explanation. Shouldn't everything be documented in the README?