Cogent 637 board
Joel Sherrill <joel@OARcorp.com>
joel.sherrill at OARcorp.com
Thu Nov 10 14:24:27 UTC 2005
Joel Sherrill <joel at OARcorp.com> wrote:
> Camilo Alejandro Arboleda wrote:
>> I tried with gcc 3.2.3, with the same result. Given that remote
>> debugging uses ethernet in this board, what shoul I do to track down
>> the error?
> If Jay;'s board works and yours doesn't, then I am prone to blame the
> board. Are there multiple revisions of it? ROM or jumper settings
> which could be different?
Yet another case where I should read the entire thread before replying. :(
More than likely ARM memcpy changed from the 4.6 newlib to the current
1.13. So this alignment issue is now a factor. I haven't looked at
newlib yet but if the newlib ARM memcpy does not properly deal with
misaligned memory, I would consider it a bug in that code and not
something the driver shoudl deal with except as a potential performance
>> Joel Sherrill <joel at OARcorp.com> wrote:
>>> Camilo Alejandro Arboleda wrote:
>>>> I'm using RTEMS 188.8.131.52. Network driver is loaded, but it seems to
>>>> fail in the ISR.
>>>> Linux ethernet driver works fine.
>>>> I already said that, but I've never worked with ARM before, and I
>>>> don't know what to look for.
>>> What gcc version are you using? There have been cases with gcc 4.0.x
>>> where something got optimized better and no longer works.
Joel Sherrill, Ph.D. Director of Research & Development
joel at OARcorp.com On-Line Applications Research
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