Application Note
PHYTEC Technologie Holding AG 2004
Europe: Support Hotline: +49 (6131) 9221-31
http://www.phytec.de
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LAN-032e_2
4/8
2.2
Configuring Environmental Variables
•
At the PCM022> command prompt, enter the following
environment variable command to view current settings:
PCM022> printenv
A complete list of currently supported U-Boot commands is displayed
after entering "help" in the command line.
•
Configure U-Boot environmental variables using the following
commands:
Note:
Be sure to enter the IP address specific to your TFTP server (Linux
machine) and phyCORE-PXA255 module. The values shown below
are used as examples.
PCM022> setenv serverip 192.168.3.10
(IP address of your TFTP server)
PCM022> setenv ipaddr 192.168.3.11
(IP address of the module)
PCM022> setenv netmask 255.255.255.0
(net mask of the network system)
The MAC address of the SMSC91111 Ethernet controller at U7 has
not been programmed into the EEPROM on the module. The PXA255
will read the contents of the EEPROM as FF:FF:FF:FF:FF:FF. U-Boot
will use the MAC address given by the environment variable ethaddr.
•
Set the value of ethaddr to the MAC-ID address on the serial
number sticker on phyCORE-PXA255 module (example values
shown below):
PCM022> setenv ethaddr 00:50:C2:32:AE:92