About cache enabling in LWIP port of BBB in RTEMS

[Joel Sherrill]

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
>
>     --
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> --
> ragu

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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