About cache enabling in LWIP port of BBB in RTEMS

[Marcos Díaz]

Hi,
How did you see the revision number? if you are using u-boot you can pause
the start and write printenv and enter to see that:

board=am335x
board_name=A335BNLT
board_rev=00C0

This is in my version.
Please tell me so I can check if is the revision, or perhaps is something
else in u-boot initialization.

For the question Joel asked there is a way:
http://dumb-looks-free.blogspot.com.ar/2014/05/beaglebone-black-bbb-revision-serial.html
apparently, in the eeprom thorugh i2c it is recorded. But first we must
confirm that is a problem from the revisions, since Ragu has the problem in
a rev C.
Greetings

On Wed, Sep 16, 2015 at 7:22 PM, Joel Sherrill <joel.sherrill at oarcorp.com>
wrote:

>
>
> On 9/16/2015 2:41 PM, ragu nath wrote:
>
>> Hi Marcos,
>>
>> Great news! I did not  find any solution to the issue. I have a REV C
>> board from element14. Is this the same board you are using?  In my board I
>> saw the issue.
>>
>> Does this have anything to do with the patch you submitted [PATCH]
>> Beaglebone: fix missing clobber in inline assembly.
>> https://lists.rtems.org/pipermail/devel/2015-September/012531.html
>> I have not yet tested with this patch.
>>
>> The freebsd driver is working with cache disabled.  If possible pls check
>> if it is working with cache enabled in your board.
>>
>
> If this is a board revision related issue, is there a way programmatically
> to
> know which revision the board is? That way the BSP could auto-detect the
> right
> thing to do. Otherwise, we may be looking at a BSP variant or a build
> option.
> I would rather avoid those if we can auto-detect.
>
> --joel
>
>
>> Thanks,
>> Ragunath
>>
>>
>> On Mon, Sep 14, 2015 at 7:22 PM, Marcos Díaz <
>> marcos.diaz at tallertechnologies.com <mailto:
>> marcos.diaz at tallertechnologies.com>> wrote:
>>
>>     Hi Ragu,
>>     I wanted to know if you were able to see something else about the
>> problem we had in the BBB when using LWIP and enabling cache ( the program
>> freezes).
>>     I can tell you that here we were using BBB rev. A5C and had this
>> problem, but now we could test this with a BBB Rev C, and it successfully
>> works with cache enabled (using the same sdcard in both boards, one works
>> and the other doesn't).
>>     Greetings
>>
>>     --
>>
>>     ______________________________
>>
>>     <http://www.tallertechnologies.com>
>>
>>     *
>>     *
>>
>>     Marcos Díaz
>>
>>     Software Engineer
>>
>>     *
>>     *
>>
>>     San Lorenzo 47, 3rd Floor, Office 5
>>
>>     Córdoba, Argentina
>>
>>     *
>>     *
>>
>>     Phone:+54 351 4217888 / +54 351 4218211/ +54 351 7617452
>>
>>     Skype:markdiaz22
>>
>>
>>
>>
>>
>> --
>> ragu
>>
>
> --
> Joel Sherrill, Ph.D.             Director of Research & Development
> joel.sherrill at OARcorp.com        On-Line Applications Research
> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
> Support Available                (256) 722-9985
>



-- 

______________________________

<http://www.tallertechnologies.com>


Marcos Díaz

Software Engineer


San Lorenzo 47, 3rd Floor, Office 5

Córdoba, Argentina


Phone: +54 351 4217888 / +54 351 4218211/ +54 351 7617452

Skype: markdiaz22
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