Dear Kristian,
In message 7f7560f1-5b05-1f0c-8bf0-fd0458f9d3fe@mender.io you wrote:
I have a question about the format of the environment when stored on persistent storage: Is this format considered stable?
Yes, it is. It has never been changed since it has been invented in the first days of this project, when it was still sailing under the name PPCboot, and there are no plans or discussions to change it, either.
The reason I'm asking is whether it is a reasonable assumption that upgraded user space tools (fw_setenv and fw_printenv) will agree on the format with an older boot loader. The user space tools may be upgraded as part of a rootfs update, but the boot loader typically will not.
As of now, you can still read the environment of a 16 year old PPCBoot :-)
Best regards,
Wolfgang Denk