- "addip=setenv bootargs $(bootargs) " \
- "ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask)" \
- ":$(hostname):$(netdev):off\0" \
- "addmisc=setenv bootargs $(bootargs) " \
- "console=ttyS0,$(baudrate) " \
- "ethaddr=$(ethaddr) " \
+ "addip=setenv bootargs ${bootargs} " \
+ "ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}" \
+ ":${hostname}:${netdev}:off\0" \
+ "addmisc=setenv bootargs ${bootargs} " \
+ "console=ttyS0,${baudrate} " \
+ "ethaddr=${ethaddr} " \