[U-Boot-Users] Updating u-boot environment
Muhammad Yahya
Muhammad.Yahya at Sun.COM
Wed Jan 26 00:18:02 CET 2005
Wolfgang Denk wrote:
>In message <41F69395.3070003 at sun.com> you wrote:
>
>
>>I need to write a program or shell script that can update u-boot
>>
>>
>environment (e.g. MAC address).
>
>
>>Any pointers in how this may be done ?
>>
>>
>
>A program or shell script in U-Boot? No program needed, as the
>"setenv" command is a builtin. Youc an put calls to the "setenv" or
>"askenv" in a text file (= shell script), use the mkimage tool (-T
>script) to make script image from it,. load it and run it using the
>"autoscr" command.
>
>Under Linux, you can use the fw_setenv tool provided in tools/env/
>
>Note that ithe MAC address is normally write protected, i. e. it
>cannot be changed once set. This is *intentional*.
>
>Best regards,
>
>Wolfgang Denk
>
>
>
Thank you for your response. I need to provide an interface to the folks
at our manufacturing facility so that they can enter the MAC address for
the MPC embedded controller and I can write it to the u-boot
enviroment. Is is possible to write a "script" that can take user input
and then write the MAC address ? I cannot seem to find a u-boot command
that can take input from the user.
Thanks!
Muhammad
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