I have a board with a SMC91111 on it, with an EEPROM connected to it, to store the MAC address. This allows users of the board to re-flash the main flash with U-boot as many times as they want without worrying about managing the MAC address in the main flash.
However, changing the EEPROM MAC address is troublesome, because the /drivers/smc91111.c doesn't seem to support programming the attached EEPROM. (you can get_rom_mac, but not set_rom_mac).
Before I started adding things, does anyone else have the same issue?
What I was thinking of doing was defining some reserved memory locations of the processor as FLASH, and handle this in /board/specific/flash.c - a flash write to 6 memory locations will actually set the MAC address in the EEPROM attached to the LAN91111.
This solution is OK - it only effects my board, the downside is that if this is a problem other face, it doesn't help anyone else.
Thoughts?
Thanks -Robin