at91sam9263 not booting on 3.12-rc1

at91sam9263 not booting on 3.12-rc1

[Daniel Lezcano]

Hi all,

I am trying to boot a 3.12-rc1 kernel on a calao USB-sam9263 (used
default sam9263 config file) but the board hangs at the message:

"Uncompressing Linux... done, booting the kernel."

After git bisecting, the commit preventing the board to boot is:

--------------------

commit ef1ab239c0c7de29072577bc8a39859074603948
Author: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Date:   Fri May 24 06:52:06 2013 +0800

    ARM: at91: drop non DT: Calao USB-A96x

    as now we have full DT support of those board

    Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
    Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

----------------------

So I enabled the CONFIG_USE_OF, the dtb are correctly generated.

I tried to boot again, specifying the dtb address with bootm.

tftp 0x20000000 /var/lib/tftpboot/at91/arch/arm/boot/usb_a9263.dtb

tftp 0x21000000 /var/lib/tftpboot/at91/arch/arm/boot/uImage

bootm 0x21000000 - 0x20000000

but without success.

I am wondering what I could be doing wrong ...

Any help would be appreciate.

  -- Daniel


ps: u-boot is "U-Boot 2010.09 (Oct 27 2010 - 12:28:54)"


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at91sam9263 not booting on 3.12-rc1

[Fabio Estevam]

On Mon, Sep 23, 2013 at 5:49 PM, Daniel Lezcano
<daniel.lezcano@linaro.org> wrote:

> So I enabled the CONFIG_USE_OF, the dtb are correctly generated.
>
> I tried to boot again, specifying the dtb address with bootm.
>
> tftp 0x20000000 /var/lib/tftpboot/at91/arch/arm/boot/usb_a9263.dtb
>
> tftp 0x21000000 /var/lib/tftpboot/at91/arch/arm/boot/uImage
>
> bootm 0x21000000 - 0x20000000
>
> but without success.
>
> I am wondering what I could be doing wrong ...
>
> Any help would be appreciate.
>
>   -- Daniel
>
>
> ps: u-boot is "U-Boot 2010.09 (Oct 27 2010 - 12:28:54)"

I am not familiar with this board, but most likely this old U-boot
does not support dtb booting.
You can check whether "#define CONFIG_OF_LIBFDT" is included in your
board config file.

You could also try to update the bootloader or try to generate a
kernel + dtb image (need to select CONFIG_ARM_APPENDED_DTB option in
the kernel).

Regards,

Fabio Estevam

at91sam9263 not booting on 3.12-rc1

[Daniel Lezcano]

On 09/23/2013 11:31 PM, Fabio Estevam wrote:
> On Mon, Sep 23, 2013 at 5:49 PM, Daniel Lezcano
> <daniel.lezcano@linaro.org> wrote:
>
>> So I enabled the CONFIG_USE_OF, the dtb are correctly generated.
>>
>> I tried to boot again, specifying the dtb address with bootm.
>>
>> tftp 0x20000000 /var/lib/tftpboot/at91/arch/arm/boot/usb_a9263.dtb
>>
>> tftp 0x21000000 /var/lib/tftpboot/at91/arch/arm/boot/uImage
>>
>> bootm 0x21000000 - 0x20000000
>>
>> but without success.
>>
>> I am wondering what I could be doing wrong ...
>>
>> Any help would be appreciate.
>>
>>    -- Daniel
>>
>>
>> ps: u-boot is "U-Boot 2010.09 (Oct 27 2010 - 12:28:54)"
>
> I am not familiar with this board, but most likely this old U-boot
> does not support dtb booting.
> You can check whether "#define CONFIG_OF_LIBFDT" is included in your
> board config file.
>
> You could also try to update the bootloader or try to generate a
> kernel + dtb image (need to select CONFIG_ARM_APPENDED_DTB option in
> the kernel).

Hi Fabio,

thanks for your answer. It took me awhile to setup everything and find 
the right tools.

So I tried CONFIG_ARM_APPENDED_DTB but that does not work. I did not 
give much credit to that as it is flagged experimental.

Then I tried to flash a more recent u-boot but something went wrong. I 
have still the FlashRom prompt but the ttyACM0 where I can upload the 
u-boot does not appear anymore on my system.

I am totally stuck at this point ...



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at91sam9263 not booting on 3.12-rc1

[Nicolas Ferre]

Hi Daniel,

On 26/09/2013 15:27, Daniel Lezcano :
> On 09/23/2013 11:31 PM, Fabio Estevam wrote:
>> On Mon, Sep 23, 2013 at 5:49 PM, Daniel Lezcano
>> <daniel.lezcano@linaro.org> wrote:
>>
>>> So I enabled the CONFIG_USE_OF, the dtb are correctly generated.
>>>
>>> I tried to boot again, specifying the dtb address with bootm.
>>>
>>> tftp 0x20000000 /var/lib/tftpboot/at91/arch/arm/boot/usb_a9263.dtb
>>>
>>> tftp 0x21000000 /var/lib/tftpboot/at91/arch/arm/boot/uImage
>>>
>>> bootm 0x21000000 - 0x20000000
>>>
>>> but without success.
>>>
>>> I am wondering what I could be doing wrong ...
>>>
>>> Any help would be appreciate.
>>>
>>>     -- Daniel
>>>
>>>
>>> ps: u-boot is "U-Boot 2010.09 (Oct 27 2010 - 12:28:54)"
>>
>> I am not familiar with this board, but most likely this old U-boot
>> does not support dtb booting.
>> You can check whether "#define CONFIG_OF_LIBFDT" is included in your
>> board config file.
>>
>> You could also try to update the bootloader or try to generate a
>> kernel + dtb image (need to select CONFIG_ARM_APPENDED_DTB option in
>> the kernel).
>
> Hi Fabio,
>
> thanks for your answer. It took me awhile to setup everything and find
> the right tools.
>
> So I tried CONFIG_ARM_APPENDED_DTB but that does not work. I did not
> give much credit to that as it is flagged experimental.

Well I managed to use this technique successfully several of times. But 
maybe you still have to modify the machine ID.

> Then I tried to flash a more recent u-boot but something went wrong. I
> have still the FlashRom prompt but the ttyACM0 where I can upload the
> u-boot does not appear anymore on my system.
>
> I am totally stuck at this point ...

I hope that Jean-Christophe can help you with this as he is aware of the 
Calao boards.

There is probably a way to recover access to the SAM-BA prompt that will 
allow you to regain access to the flashing process. I have just fount 
this wiki page:
http://www.calao-systems.com/mediawiki/index.php?title=USB-A9263_Software#How_to_install_SAM-BA_from_buildroot

BTW, I think you should use barebox instead of u-boot as the support 
should be more complete.

Bye,
-- 
Nicolas Ferre

at91sam9263 not booting on 3.12-rc1

[Daniel Lezcano]

On 10/04/2013 04:17 PM, Nicolas Ferre wrote:
> Hi Daniel,
>
> On 26/09/2013 15:27, Daniel Lezcano :
>> On 09/23/2013 11:31 PM, Fabio Estevam wrote:
>>> On Mon, Sep 23, 2013 at 5:49 PM, Daniel Lezcano
>>> <daniel.lezcano@linaro.org> wrote:
>>>
>>>> So I enabled the CONFIG_USE_OF, the dtb are correctly generated.
>>>>
>>>> I tried to boot again, specifying the dtb address with bootm.
>>>>
>>>> tftp 0x20000000 /var/lib/tftpboot/at91/arch/arm/boot/usb_a9263.dtb
>>>>
>>>> tftp 0x21000000 /var/lib/tftpboot/at91/arch/arm/boot/uImage
>>>>
>>>> bootm 0x21000000 - 0x20000000
>>>>
>>>> but without success.
>>>>
>>>> I am wondering what I could be doing wrong ...
>>>>
>>>> Any help would be appreciate.
>>>>
>>>>     -- Daniel
>>>>
>>>>
>>>> ps: u-boot is "U-Boot 2010.09 (Oct 27 2010 - 12:28:54)"
>>>
>>> I am not familiar with this board, but most likely this old U-boot
>>> does not support dtb booting.
>>> You can check whether "#define CONFIG_OF_LIBFDT" is included in your
>>> board config file.
>>>
>>> You could also try to update the bootloader or try to generate a
>>> kernel + dtb image (need to select CONFIG_ARM_APPENDED_DTB option in
>>> the kernel).
>>
>> Hi Fabio,
>>
>> thanks for your answer. It took me awhile to setup everything and find
>> the right tools.
>>
>> So I tried CONFIG_ARM_APPENDED_DTB but that does not work. I did not
>> give much credit to that as it is flagged experimental.
>
> Well I managed to use this technique successfully several of times. But
> maybe you still have to modify the machine ID.
>
>> Then I tried to flash a more recent u-boot but something went wrong. I
>> have still the FlashRom prompt but the ttyACM0 where I can upload the
>> u-boot does not appear anymore on my system.
>>
>> I am totally stuck at this point ...
>
> I hope that Jean-Christophe can help you with this as he is aware of the
> Calao boards.
>
> There is probably a way to recover access to the SAM-BA prompt that will
> allow you to regain access to the flashing process. I have just fount
> this wiki page:
> http://www.calao-systems.com/mediawiki/index.php?title=USB-A9263_Software#How_to_install_SAM-BA_from_buildroot

Yeah, I used this link to reflash the USB-A9263 and this is where a I 
believe I corrupted somehow the bootloader.

I don't know how, but I must find a way to recover the old bootloader.

> BTW, I think you should use barebox instead of u-boot as the support
> should be more complete.

Ok, good to know. I will look at it.

Thanks
   -- Daniel


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