[U-Boot-Users] Ensuring correctness of U-boot in the flash

[David Saada]

> > Yes of course I can do that. My question was if there was a way (or a
plan)
> > to embed this CRC in the U-boot image, otherwise I'd have to burn it
> > elsewhere (in another sector for instance).
> 
> The environment is a convenient place,  unless  your  environment  is
> embedded within U-Boot, in which case you need to split this up
> anyway.

Won't work in our case I'm afraid. First, we would like the booted
application to be able to check the CRC after upgrading U-boot, which means
that it will need to know the environment structure (something that is also
problematic legally, as some of our applications are non GPL). Second, our
master plan is to have two copies of U-boot programmed on the flash (for
field upgrades sake), with a mutual environment sector.
I guess the only way to implement this meeting our requirements is to
sacrifice an adjacent sector that will only hold the CRC.
Best regards,
David.
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