Dear Simon, In message <20211019164418.v9.3.Ie78bfbfca0d01d9cba501e127f446ec48e1f7afe@changeid> 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 a board/<vendor> > directory, typically called <board>.env and controlled by the > CONFIG_ENV_SOURCE_FILE option. > > The environment variables should be of the form "var=value". Values can > extend to multiple lines. See the README under 'Environment Variables:' > for more information and an example. Note that variables names may > not end in + due to the += syntax below.
I still object to placing new, arbitrary restrictions on what may or may not be used in environment variable names. We have discussed alternative implementations, and trivial changes like using "=+" instead of "+=" as append operator do not require such restictions. Thus, and only for the restictions on variable names: Naked-by: Wolfgang Denk <w...@denx.de> Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de There is is no reason for any individual to have a computer in their home. -- Ken Olsen (President of Digital Equipment Corporation), Convention of the World Future Society, in Boston, 1977