[U-Boot] [PATCH] Allow U-Boot scripts to be placed in a .env file

[Rob Herring]

On 04/17/2013 12:44 AM, Wolfgang Denk wrote:
> Dear Simon Glass,
> 
> In message <1366155414-6525-1-git-send-email-sjg at chromium.org> you wrote:
>> At present U-Boot environment variables, and thus scripts, are defined
>> by CONFIG_EXTRA_ENV_SETTINGS. It is painful to add large amounts of text
>> to this file and dealing with quoting and newlines is harder than it
>> should be. It would be better if we could just type the script into a
>> text file and have it included by U-Boot.
>>
>> Add a feature that brings in a .env file associated with the board
>> config, if present. To use it, create a file in include/configs
>> with the same name as you could board config file, except with a
>> .env extension instead of a .h extension. The variables should be
>> separated by \0. Comments are permitted, using # as the first character
>> in a line.
> 
> Please do not litter the include/configs/ directory with such stuff.
> It's more than big enough already.  Please put such files into the
> respective board directories.
> 
> And if you do something like this, then please go the way to the end.
> Forget about the \0 termination, make it a plain text file instead,
> something that can be used with "env import -t" as well (or created
> with "env export -t").

What about allowing a binary created with mkenvimage to be built-in.
This would give us a standard build rule to build a separate env binary
as well.

Rob