[U-Boot] environment variables crc

Mike Frysinger vapier at gentoo.org
Mon Apr 20 20:25:16 CEST 2009


On Monday 20 April 2009 11:46:22 Gerrit Van Damme wrote:
> I've copied a flash image of one board to another one and changed the
> ethaddr (environment variable)
> of course when I start Uboot now the system says: CRC bad, using default
> environment variables.
> Now what I would like to do is recalculate that CRC, change it in the
> image and then copy it to the second board.
> Can anyone tell me how I can calculate the CRC and where it is located.
> I already understood that it's a CRC32.

"saveenv".  the CRC is the first 4 bytes of the environment and is calculated 
using the environment.
-mike
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