Digi 9P 9360/9750 manual User keys, Example A9M24x0

The command “run” allows to execute variables as sequence od commands.

Here values of other variables could be used to simplify the scripts. (e.g. $(filesize) )

Example (A9M24x0):

The following variables are available:

ipaddr = 192.168.42.10

serverip = 192.168.42.1

loadaddress = 0x30100000

bootfile = uImage-a9m2410dev

setenv bootcmd tftp\;bootm

This command is identical with:

setenv bootcmd tftp 30100000 uImage-a9m2410dev\;bootm 30100000

and:

setenv bootcmd tftp 30100000 $(bootfile)\;bootm 30100000

User keys

Note: CC9P9360/9750 and A9M2410/2440 only

There are two User Keys on the development board, which can be used with functions from U-Boot. It is common to use them for booting different kernel versions or using different rootfs. For example:

#setenv key1 run boot_usb

#setenv key2 run boot_net

#saveenv

When User Key 1 is pressed in the start phase of U-Boot, the contents of the variable “key1” is executed, i.e. the target will boot from a USB medium.

When User Key 2 is pressed the target boots via TFTP/NFS.

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