[U-Boot] U-boot Saveenv question

[Jerry Van Baren]

Suresh Bhaskaran wrote:
> 1.  I verified flash contents using the md.w command in u-boot
> 2.  I've already verified correct flash r/w operation using the cp.w
> command
> 3.  Yes, the CONFIG_ENV_OVERWRITE flag is defined in my boardfile
> 4.  Flinfo shows the correct flash configuration (sectors, etc) of the
> flash
> 
> I can see the new env variable (e.g. set serverip 10.0.0.1) at the end
> of the saveenv area in flash (after I do a saveenv).  (the original
> entry is removed from the list in flash, and the new updated entry is
> added to the end of the list in flash).
> 
> Still, when I reboot u-boot, I don't get the new environment variable
> updated from flash.
> 
> What am I missing?
> 
> Thanks.
> Suresh

Please don't top post.

Are you using DHCP (BOOTP)?  If you are, serverip is probably being sent 
by your DHCP server and overriding the value you have set in your env.

I'm assuming you are *not* getting env CRC failure warnings on boot.

If neither of the above guesses solve the problem, please copy what is 
printed to the console on start up.  Without more information, we're 
just guessing.

Best regards,
gvb


> -----Original Message-----
> From: Andrejs Cainikovs [mailto:andrejsc at globalautomationsystems.com] 
> Sent: Sunday, October 05, 2008 8:55 AM
> To: Suresh Bhaskaran
> Cc: u-boot at lists.denx.de
> Subject: Re: [U-Boot] U-boot Saveenv question
> 
> How did you verified that your environment get saved?
> What is the result of running the 'flinfo'?
> Is CONFIG_ENV_OVERWRITE defined in your board file?
> 
> Kind regards,
> Andrejs Cainikovs.
> 
> Suresh Bhaskaran wrote:
>> Hello,
>>
>> I have a question relating to doing saveenv from the u-boot command
> line
>> (after hitting key to stop autoboot), and having u-boot come up during
>> the next reboot with the saved environment.
>>
>> First of all, I apologize in advance if this question is out of place
> in
>> this mailing list.  
>>
>> This mailing list seems to be for u-boot patch upgrades, rather than
> for
>> general questions?
>>
>> Anyway, it's the best list on u-boot I was able to find:
>>
>> 1.  I upgraded from u-boot 1.1.3 (2005) to u-boot 1.3.4 (2008)
>> 2.  I've put in the board/target-specific files incorporated, and have
>> it working.
>>
>> 3.  However, when I do a saveenv (e.g. after "set serverip 10.0.0.1"),
>> and I do a reboot, the new environment variable doesn't show up.  
>> 	a.  (I've verified that it actually gets written to flash...)
>>
>> 4.  Is there something I else I need to do to "turn on" re-booting
> from
>> saved environment?
>>
>> Thanks in advance.
>>
>> Suresh Bhaskaran
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>> U-Boot at lists.denx.de
>> http://lists.denx.de/mailman/listinfo/u-boot
>>   
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