I'm trying to enable network on my EFM32 Giant Gecko (FPGA version
0v1p1b148), but failed. Here is what I did:

1. Downgraded to board firmware 0v9p9b909
2. Enabled ping and route in busybox
3. Built, burnt and boot uclinux successfully
4. ping local eth0 but doesn't work:

/ # /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr D6:C5:6F:EC:7B:F1
          inet addr:192.168.0.100  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:4
/ # ping 192.168.0.100
No response from 192.168.0.100
/ # /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr D6:C5:6F:EC:7B:F1
          inet addr:192.168.0.100  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:4

Please share me some hint, if anyone have succeeded before.

Thanks,
Joey