Re: sheeveplug u-boot environment

[Rick Thomas <rbthomas@pobox.com>]

On Jan 5, 2016, at 10:12 PM, Vagrant Cascadian <vagrant@debian.org> wrote:

>>> There are a couple bugs reported against u-boot which may be relevent:
>>> 
>>> https://bugs.debian.org/781874
>>> https://bugs.debian.org/782293

For what it’s worth, by grepping about in /dev/mtd0, I located what seems to be the place where the u-boot environment is located.

It’s 0x80000.

And to verify that, I have changed /etc/fw_env.config to

> # MTD device name   Device offset   Env. size   Flash sector size
> /dev/mtd0           0x80000         0x20000     0x20000

then I did “fw_printenv".

Guess what!  No message about bad CRC or default environment, and the environment that it printed matched the output of “printenv” under u-boot.

So I guess it’s all explained by https://bugs.debian.org/781874 .

I’ve certainly learned a lot!

Enjoy!
Rick

PS: I’ll test the experimental u-boot u-boot-tools stuff as soon as you approve my proposed testing procedure.  And I’ll also agree to test any new versions you point me at — I can’t guarantee 24-hour turn-around time, but I’ll certainly try!