Re: LXT972 FEC problem on MPC855

2 messages, 2 authors, 2002-08-26 · open the first message on its own page

Re: LXT972 FEC problem on MPC855

From: Wolfgang Denk <hidden>
Date: 2002-08-26 18:27:02

In message [off-list ref] you wrote:
quoted
After running ppcboot on our board successfully (including the fast
ethernet LXT972), we have trouble on enabling FEC on linux kernel. The
problem is that we cannot send any packets through the network after the
kernel is booted. The ethernet looks OK during initialization according
to the printed messages. We are trying to locate the problem but haven't
found yet so far. Any hints on what caused such problem?
...
eth0: config: auto-negotiation on, 100FDX, 100HDX, 10FDX, 10HDX.
IP-Config: Incomplete network configuration information.
You are passing bad/insufficient boot arguments to the Linux  kernel;
unfortunaltely you don;t show us this part of the boot messages, so I
cannot even guess what you're doing wrong.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Do not underestimate the value of print statements for debugging.

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Re: LXT972 FEC problem on MPC855

From: Xiaogeng (Shawn) Jin <hidden>
Date: 2002-08-26 19:17:31

quoted
eth0: config: auto-negotiation on, 100FDX, 100HDX, 10FDX, 10HDX.
IP-Config: Incomplete network configuration information.
You are passing bad/insufficient boot arguments to the Linux  kernel;
unfortunaltely you don;t show us this part of the boot messages, so I
cannot even guess what you're doing wrong.
Well, if IP-Config is not complete, we can change the configuration
using 'ifconfig' after the kernel starts. I did that. And I noticed that
'eth0' can receive packets but cannot transmit any packets. Here is the
result of running ifconfig.

---------------------------once----------------------------------
#ifconfig
eth0      Link encap:Ethernet  HWaddr 00:06:17:01:02:00
           inet addr:192.168.5.24  Bcast:192.168.5.255  Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:180 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:100
           RX bytes:18110 (17.6 kb)  TX bytes:0 (0.0 b)
           Base address:0xe00
---------------------------once----------------------------------
---------------------------twice---------------------------------
#ifconfig
eth0      Link encap:Ethernet  HWaddr 00:06:17:01:02:00
           inet addr:192.168.5.24  Bcast:192.168.5.255  Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:282 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:100
           RX bytes:26831 (26.2 kb)  TX bytes:0 (0.0 b)
           Base address:0xe00
---------------------------twice---------------------------------

- Shawn.


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