libubootenv is a library that provides a hardware independent way to access to U-Boot environment. U-Boot has its default environment compiled board-dependently and this means that tools to access the environment are also board specific, too.
Source Code: https://github.com/sbabic/libubootenv
Documentation (doxygen): https://sbabic.github.io/libubootenv
Part of the library are the replacement of the "fw_printenv / fw_setenv" tools that can be used with any board - they accept as parameter a file as initial environment if none is found on the persistent storage. The syntax for the file and for the data configuration file is the same as the one described in the U-Boot project.
::
Usage fw_printenv [OPTION]
-h, : print this help
-c, --config <filename> : configuration file (old fw_env.config)
-f, --defenv <filename> : default environment if no one found
-V, : print version and exit
-n, --no-header : do not print variable name
Usage fw_setenv [OPTION]
-h, : print this help
-c, --config <filename> : configuration file (old fw_env.config)
-f, --defenv <filename> : default environment if no one found
-V, : print version and exit
-s, --script <filename> : read variables to be set from a script
libubootenv is licensed under LGPL-2.1
Recipe is provided in openembedded-core layer https://git.openembedded.org/openembedded-core/tree/meta/recipes-bsp/u-boot/
Package is provided in https://git.buildroot.net/buildroot/tree/package/libubootenv
Contributions are welcome ! You can submit your patches (or post questions regarding the project) to the swupdate Mailing List:
Please read the contributing chapter in the documentation how to contribute to the project.