Accessing the U-Boot environment from a C program

Wed, 08 Apr 2026 00:00:00 +0000

Need to modify the U-Boot environment from Linux

A/B update and recovery workflow implemented for a Root Commit customer

There are multiple reasons for wanting to modify U-Boot variables from Linux, one of them being to implement A/B update mechanisms. Typically, after you’ve flashed a device with a new version, you’ll set the upgrade_available U-Boot variable to 1, reboot, and let U-Boot try to boot the new version.

Swupdate on Rootcommit WIP

Accessing the U-Boot environment from a C program

Need to modify the U-Boot environment from Linux