In message loom.20080111T194955-495@post.gmane.org you wrote:
In the process of porting uboot to an MPC8280 board I've run into a problem with Ethernet. Ping and tftpboot failed and after examining the connection with Wireshark I noticed the initial ARP request is malformed.
...
In porting uboot to other boards in the past I've witnessed memory initialization errors causing issues during Ethernet transactions, but I'm fairly confident in my DRAM initialization for this board.
My initial bet would have been RAM issues, so if you are not 101% certain I recommend to re-check the initialization sequence.
=> tftpboot 0x100000 image
-----------------------^^^^^
Trying FCC1 ETHERNET Using FCC1 ETHERNET device TFTP from server 10.1.1.12; our IP address is 10.1.1.26 Filename 'StarsA3I2K'.
-----------^^^^^^^^^^^^^
That doesn't match - strange!
Any ideas on potential problems or suggestions on steps for further debugging would be greatly appreciated.
Don't forget to check voltages, clocks, and clock routing!
Best regards,
Wolfgang Denk