Am Dienstag 08 November 2011, 20:28:19 schrieb Wolfgang Denk:
Dear "Michael Walle",
In message 45fd92b472c944e2cb9ebb409488ccfc.squirrel@ssl.serverraum.org
you wrote:
If someone will mess up the environment, it is possible to clear it by holding a button upon powerup. Atm i have the CONFIG_ETH_ADDR set to a default MAC address to be able to use the network console with the default environment. To restore the original MAC address, a user have to manually replace ethaddr with the one printed on the case.
But now, if i can't use the CONFIG_ETH_ADDR, i think i'm stuck :) Or do i miss something? (Yeah there may be the MAC randomization, if accepted).
There are more clever ways than just to clear the environment. We have "env export" and "env import", so you can create one or more backup copies or user proviles. Instead of clearing the environment, you could also load one such previously saved user profile, which then would contain the MAC address.
thanks for the hint, but there is only 512kb flash on this board (with 64k sectors). I don't think there is enough room for a second copy of the environment.
and in some way, the mac address has to find its way into one of these environments.
i think there are more boards like this, esp. since there is this mac randomization code within the mvgbe driver.