[U-Boot-Users] U-Boot Ethernet Troubles

[Wolfgang Denk]

In message <loom.20080111T194955-495 at 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

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