Artesyn COMX-P2020 BSP User Guide (July 2014) - Manual (Page 68)

U-boot Deployment
COMX-P2020 BSP User Guide (6806800L84B) 68
netdev=eth0
rootdelaysecond=15
uboot_nor=u-boot-nor.bin
uboot_spi=u-boot-spi.bin
uboot_sd=u-boot-sd.bin
consoledev=ttyS0
ramdiskaddr=2000000
ramdiskfile=rootfs-dev.ext2.img
fdtaddr=c00000
fdtfile=comx.dtb
tftppath=COMX-P2020/current
DVO_OUTPUT=enable
ethaddr=00:80:42:05:44:02
eth1addr=00:80:42:05:44:03
eth2addr=00:80:42:05:44:04
ethact=eTSEC1
Environment size: 2804/8188 bytes
=>
5.5.2 Configure U-boot for tftp
The following environment settings are required to configure the u-boot for tftp:
=> setenv ethaddr <MAC Address 1>