Wolfgang Denk wrote:
Just use common sense. Anything that is board-specific should never be set in the board config file because that would mean that all boards would share this property in the default configuration.
An absolute no-no is CONFIG_ETH*ADDR.
$ grep CONFIG_ETH.*ADD include/configs/MPC8349ITX.h #define CONFIG_ETHADDR 00:E0:0C:00:8C:01 #define CONFIG_ETH1ADDR 00:E0:0C:00:8C:02
Oops.
Although, to be honest, this is very handy for me because these are the MAC addresses that have been assigned to the MPC8349E-mITX board in our lab. This way, every time I build an image, it's guaranteed to have the right MAC addresses. I don't need to run some kind of script to set up my variables.
Is there some easy way for me to specify personalized config options at build time?
Note that you *can* do all these things, if you know exactly what you are doing - that's whey the feature is there. But shipping boards to customer with all set to the same MAC address is a felony and deserves serious punishment (hello Andrea!).
I agree, but if every board has the same flash image, how do we specify a different MAC address for each one?
Ulf was (originally) asking for a customization feature; of course it makes sense to customize boards during production, for example to set board-specific values for MAC address, serial number, etc. But this can, and should, be done without creating different U-Boot images.
I don't see how. Not every company has a manufacturing process that allows that. This is especially true for reference boards, which aren't supposed to be used in a public environment anyway.