[U-Boot] Changing u-boot parameter from linux.

[U-Boot] Changing u-boot parameter from linux.

[Brian S. Park]

Hi all,
What is the recommended way to update u-boot parameter (such as 
network IP) from linux? In the past, I just updated the parameter 
sector in the flash by calculating the check sum and wrote the new 
data to the flash directly from linux application. This works ok if 
u-boot is not updated. I realized that u-boot has changed the way it 
writes the parameter to the flash since we used in on our last 
hardware (version 1.0.0) and am wondering if there is a better way to do this.

Thanks

Brian


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[U-Boot] Changing u-boot parameter from linux.

[Ben Warren]

Hi Brian,

Brian S. Park wrote:
> Hi all,
> What is the recommended way to update u-boot parameter (such as 
> network IP) from linux? In the past, I just updated the parameter 
> sector in the flash by calculating the check sum and wrote the new 
> data to the flash directly from linux application. This works ok if 
> u-boot is not updated. I realized that u-boot has changed the way it 
> writes the parameter to the flash since we used in on our last 
> hardware (version 1.0.0) and am wondering if there is a better way to do this.
>   
Use the fw_printenv/fw_setenv application in the tools/env directory.  
It's a user-space app that can access your environment if you make it 
visible through MTD.

regards,
Ben