[U-Boot-Users] at91sam9260-ek intermittenly fails at u-boot init

[Norman Cheung]

Many thanks Stelian for the replies.  My comments inline.

Norman

Stelian Pop wrote:
> Le mercredi 25 juin 2008 à 01:36 +0000, Norman Cheung a écrit :
>   
>> I am struggling with this problem for a week now and not making any progress. 
>> So any suggestions, ideas or pointer will be greatly appreciated.
>>     
> [...]
>
>   
Since the post earlier, I have narrowed the problem to the bootstrap 
during the copy from NAND to SDRAM, memories are corrupted.  I think I 
have a marginal NAND chip.  I played around the  SMC  cycle timing  in 
bootstrap,  I have a setting that I can boot u-boot with power cycle 6 
out of 10 times.  So I am convinced that it is not an u-boot issue, Thanks!
>> The board works with u-boot 1.3.2 and at91bootstrap(1.5 I only have the binary)
>> booting from NAND.
>>     
>
> The source (for the latest version) is freely available on the Atmel
> site: http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4093
>
> If you really need the source for an older version, I'm sure the Atmel
> support will send it to you upon request.
>
>   
>> U-boot fails intermittently at the start.  When it fails, it didn't make it to
>> my first printf statement.  When I use JTAG to debug it, it always works.  
>>
>> If the board has been let without power for 1+ hour, it will also boot up when 
>> I apply power to it(something to do with the battery perhaps).
>>     
>
> Did you try disconnecting the battery ? Or replacing the battery with a
> new one ?
>
> [...]
>   
I tried disconnecting the battery and with the new SMC timing changes, I 
can boot up only one time after disconnecting the battery.  I will go 
and get a new battery.
>    
>   
>> We had at91bootstrap 1.5 working well in 32-bit mode with u-boot 1.3.2.  But I
>> don't have the source.
>>     
>
> See above.
>
>   
>>   I wonder what is the current stable version of u-boot
>> and at91bootstrap? 
>>     
>
> AT91Bootstrap seems to be at v1.9.
>
> As for U-Boot, try the latest git (which will soon be u-boot v1.3.4).
>
> (BTW, if Wolfgang is listening, it would be nice to have proper tags in
> git as well as releases on the ftp server for the -pre version. Since
> the merge window is closed, I guess we're up to v1.3.4-pre1 now, but
> this version tag cannot be found anywhere...)
>
> Stelian.
>