Ethernet (SBC-i.MX51)
The SBC-i.MX51 provides 10/100MBit Ethernet via the RJ45 jack.
Kernel configuration
Default networking configuration:
[*] Networking support --->
Networking options --->
<*> Packet socket
[*] Packet socket: mmapped IO
<*> Unix domain sockets
[*] TCP/IP networking
[*] IP: multicasting
[*] IP: kernel level autoconfiguration
[*] IP: DHCP support
[*] IP: BOOTP support
<*> IP: IPsec transport mode
<*> IP: IPsec tunnel mode
<*> IP: IPsec BEET mode
<*> INET: socket monitoring interface
i.MX51 specific configuration:
Device Drivers --->
[*] Network device support --->
[*] Ethernet (10 or 100Mbit) --->
<*> Generic Media Independent Interface device support
<*> FEC ethernet controller
Test in Linux
- Connect a cable to the RJ45 jack. We assume that a DHCP server is running in your network.
- If you have set a valid MAC address in Redboot already, you will see that the board gets its IP address automatically during Linux boot:
udhcpc (v1.13.2) started run-parts: /etc/udhcpc.d/00avahi-autoipd exited with code 1 Sending discover... Sending discover... Sending select for 192.168.1.161... Lease of 192.168.1.161 obtained, lease time 600 run-parts: /etc/udhcpc.d/00avahi-autoipd exited with code 1 adding dns 192.168.0.4 done.
- Ping a machine on your network:
root@sbc-imx51:~# ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1): 56 data bytes 64 bytes from 192.168.1.1: seq=0 ttl=64 time=0.300 ms 64 bytes from 192.168.1.1: seq=1 ttl=64 time=0.321 ms 64 bytes from 192.168.1.1: seq=2 ttl=64 time=0.297 ms 64 bytes from 192.168.1.1: seq=3 ttl=64 time=0.309 ms 64 bytes from 192.168.1.1: seq=4 ttl=64 time=0.308 ms 64 bytes from 192.168.1.1: seq=5 ttl=64 time=0.257 ms 64 bytes from 192.168.1.1: seq=6 ttl=64 time=0.297 ms ^C --- 192.168.1.1 ping statistics --- 7 packets transmitted, 7 packets received, 0% packet loss round-trip min/avg/max = 0.257/0.298/0.321 ms root@sbc-imx51:~#
(supply a valid IP address)
Set the MAC address (Linux)
- Show the current MAC address:
ifconfig -a|grep eth0
Look for "HWaddr"
- Change the MAC address to 00:01:02:03:04:05:
ifconfig eth0 hw ether 00:01:02:03:04:05
Set the MAC address (Redboot)
You can setup Redboot to automatically assign a MAC address of your board at boot. Use the fconfig command for configuration. We will assign the address 02:03:04:05:06:07 here.
RedBoot> fconfig -l ... Set FEC network hardware address [MAC]: true FEC network hardware address [MAC]: 0x02:0x03:0x04:0x05:0x06:0x07 ...
Don't forget to save this configuration at the end of fconfig.