Infact, use (abuse) of environment variables to store the scripts is strongly discouraged.
Who says so? I strongly disagree.
Refering to the text below:
CONFIG_EXTRA_ENV_SETTINGS: Define this to contain any number of null terminated strings (variable = value pairs) that will be part of the default environment compiled into the boot image. Warning: This method is based on knowledge about the internal format how the environment is stored by the U-Boot code. This is NOT an official, exported interface! Although it is unlikely that this format will change soon, there is no guarantee either. You better know what you are doing here. Note: overly (ab)use of the default environment is discouraged. Make sure to check other ways to preset the environment like the autoscript function or the boot command first.
Therfore, can we not interptet that use (abuse) is discouraged?
-- Ajay