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

Victor pfc at presstour-bcn.com
Tue Jul 8 19:52:42 CEST 2008


2008/7/8 Jerry Van Baren <gerald.vanbaren at ge.com>:
> 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.

Yeah, I did hand edit it. Paranoia? Just a habit, don't know why...

>
>> 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?

As I said, i tried the ones generated by gen_eth_addr with no luck.

>
> Good luck,
> gvb
>




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