Dear Joe Culler,
In message 67a3f13e1003010713y432d5ee2y17a7962b15e89c9a@mail.gmail.com you wrote:
If I've already created some configuration files such as mac address in mtd2 partition. For example: 0x00000000-0x00040000 : "Bootloader" 0x00040000-0x02000000 : "User config"
Does u-boot can access mtd2 partition and read the mac address from the configure file?
Yes, it can, but you're implementing this the wrong way round. Normally the boot loader configured low level things like the MAC address, and then passes this information on to Linux.
If so, would anyone tell me how to do or what similar code can I refer to in u-boot? Thanks.
See for example the "mtdparts" command.
If not, can u-boot read the mac address from the eeprom instead of set it manually?
You can implement anything- it's softwrae, and thus extremely flexible. But don't expect to find any ready-to-use code for your own proprietary data formats. You will have to adapt this yourself.
Best regards,
Wolfgang Denk