[U-Boot] [PATCH 1/4] Add option -r to env import to allow import of text files with CRLF as line endings

[Tom Rini]

On Thu, Aug 14, 2014 at 01:50:31PM -0600, Stephen Warren wrote:

[snip]
> uenv.txt is the opposite; it's very U-Boot specific, and more about
> internal implementation details of U-Boot. In particular, I only see
> a use-case for uenv.txt on systems that have nowhere to store the
> U-Boot environment other than in some filesystem. That's the reason
> the RPi port loads uenv.txt, so the environment can be modified
> somehow. Perhaps there's an ENV_IS_IN_FAT that could be used instead
> on the Pi? For example, none of the Tegra boards use uEnv.txt since
> "saveenv" to flash works there.

Even with ENV_IS_IN_FAT you need to be in U-Boot to modify the
environment (fw_setenv/printenv should be adaptable easily enough I
would hope, but aren't today).  uEnv.txt is the way for a user to pop
the SD card into their PC, tweak the env as needed (or fiddle some
bits), eject the card and boot their target.

-- 
Tom
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