How to configure static IP configuration for the linux ethernet interface?

The initial ip configuration of the interface eth0 is configued in u-boot (see emtrion manual).

# configure dhcp
env set ip-method dhcp
env save

# configue static ip
env set ip-method static
env set ip 192.168.4.2
env set netmask 255.255.255.0
env save

If IP configuration shall be done through linux, clear all uboot variables related to IP address:

env delete ip-method
env delete ip
env delete ipaddr
env delete netmask
env save

If done so, a static IP address or DHCP can be enabled through an init script.

How to automatically start an application.

Put application into home folder /home/root under name goal_rzn1d_a7_linux.bin. After a reboot the application will be started automatically.

How to disable waiting for network connection during startup of the device.

Once all IP address related variables in uboot are deleted, this check is disabled.