[U-Boot-Users] Booting ELDK 4.0 kernel on MPC8548CDS

[Kumar Gala]

On Nov 23, 2006, at 2:01 AM, Demke Torsten-atd012 wrote:

> Hi Thoomas,
>
> I see a similar problem when using of-tree. My debugging shows
> that the of-tree address given to the kernel is outside the memory
> region that can be accessed by the kernel at start-up (defined
> by CFG_BOOTMAPSZ), thus the kernel crashes very early without any
> output.
> (IMHO this is a bug.)
> If you are using CONFIG_OF_FLAT_TREE _and_ "disable_of" ist likely  
> that
> you see the same behaviour, because in that case the "bootm" code
> still uses the of-tree address (char *of_flat_tree), after copying the
> standard bd_info data to that address.
> You could check the pointer that is given to the kernel for the
> board info data (line 967, parameter 1 of (*kernel) (...))
> (or change (*kernel) ((bd_t *)of_flat_tree,...
> to (*kernel) (kbd,...)
>
> Regards,
> Torsten

This seems like a bug.

Looking at the code I'm confused how this works at all.  I dont see  
of_flat_tree getting setting to anything at all.

Can you guys try out Grant's patch "[PATCH] Allow CONFIG_OF_FLAT_TREE  
to boot a non-arch/powerpc kernel" and see if that fixes the issue  
when building w/CONFIG_OF_FLAT_TREE enabled.  His patch should make  
it so that a bootm w/1 or 2 args that aren't a multiimage should boot  
arch/ppc style.

- k

>> -----Original Message-----
>> From: u-boot-users-bounces at lists.sourceforge.net
>> [mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf
>> Of Thomas Schafer
>> Sent: Mittwoch, 22. November 2006 19:56
>> To: u-boot-users at lists.sourceforge.net
>> Subject: [U-Boot-Users] Booting ELDK 4.0 kernel on MPC8548CDS
>>
>> Hi,
>>
>> I'm using a MPC8548CDS eval system with u-boot 1.1.6 running
>> on it. When trying to boot an ELDK 4.0 kernel, the board
>> hangs immediately after decompression of the kernel. I've set
>> the disable_of environment variable to avoid usage of the
>> flat device tree.
>>
>> The same kernel boots properly when using u-boot 1.1.3 which
>> is delivered with the eval system.
>>
>> Any hints would be appreciated.
>>
>> Best regards,
>>
>> Thomas Schafer
>>
>> ____________________________________
>>
>> Kontron Modular Computers GmbH
>>
>> Heinrich-Barth-Str. 1a
>> 66115 Saarbrucken
>>
>> Tel.: + 49 (0)681 / 95916 - 203
>> Fax:  + 49 (0)681 / 95916 - 100
>> E-mail: thomas.schaefer at kontron.com
>>
>> --------------------------------------------------------------
>> -----------
>> Take Surveys. Earn Cash. Influence the Future of IT Join
>> SourceForge.net's Techsay panel and you'll get the chance to
>> share your opinions on IT & business topics through brief
>> surveys - and earn cash
>> http://www.techsay.com/default.php?page=join.php&p=sourceforge
> &CID=DEVDEV
>> _______________________________________________
>> U-Boot-Users mailing list
>> U-Boot-Users at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/u-boot-users
>>
>
> ---------------------------------------------------------------------- 
> ---
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to  
> share your
> opinions on IT & business topics through brief surveys - and earn cash
> http://www.techsay.com/default.php? 
> page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> U-Boot-Users mailing list
> U-Boot-Users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/u-boot-users