[U-Boot-Users] No ethernet link on Lubbock board.

[Jerry Van Baren]

Victor wrote:
> This is a problem I've been fighting to for a long time. I'm sure it
> would be something stupid I haven't noticed, but I don't know what
> else to try. My Linux OS is working flawlessly with a correct eth0
> device, so at least I know it's not (or should not) a hardware
> problem.
> 
> Everything else works as expected, but the LAN91C96 driver does not
> enable the board network interface.
> 
> Environment:
> Hardware: Lubbock Board from Intel, wired to an IBM Laptop.
> U-boot version: 1.3.3 (tried with 1.3.1, 1.20, same results)
> mac address: tried with the one generated by the eth_gen_tool, and the
> original hardware one.
> Default 'lubbock.h' file, heavy edited one, etc... No luck.
> 
> $ printenv:
> U-Boot 1.3.3 (Jul  8 2008 - 19:07:01)
> 
> DRAM:  64 MB
> Flash: 64 MB
> Hit any key to stop autoboot:  0
> $ printenv
> baudrate=115200
> netmask=255.255.0.0
> bootdelay=5
> serverip=192.168.1.1
> ipaddr=192.168.1.2
> bootcmd=bootm 200000
> bootargs=ip=192.168.1.2:192.168.1.1:192.168.1.1:255.255.255.0:pxa:eth0:off
> mem=64M root=/dev/nfs nfsroot=192.168.1.1:/rootfs/nfs init=/sbin/init
> console=ttyS0,115200
> ethaddr=00:02:b3:00:8f:xx
                          ^^
                          Hmmm, what base are we using here?  Base 26?
                          :-D
> stdin=serial
> stdout=serial
> stderr=serial
> 
> Something odd I noticed:
> 
> $ tftpboot
> 
> Warning: MAC addresses don't match:
>         HW MAC address:  01:00:01:00:01:00
>         "ethaddr" value: 00:02:B3:00:8F:xx
> Using MAC Address 00:02:B3:00:8F:xx

I'm assuming you didn't hand edit in the "xx" out of paranoia.

> Linux detects the correct Mac Address without any configuration, why
> u-boot reads 01:00:01:00:01:00?

Beats me.

> Any idea?

Try a valid MAC address?

Good luck,
gvb