[Bug 1000761] eCos support for MPC5xxx MCUs

[bugzilla-daemon at ecoscentric dot com]

http://bugs.ecos.sourceware.org/show_bug.cgi?id=1000761


John Dallaway <john@dallaway.org.uk> changed:

           What    |Removed                     |Added
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                 CC|                            |nickg@ecoscentric.com




--- Comment #7 from John Dallaway <john@dallaway.org.uk>  2009-05-21 15:24:46 ---
Stefan, apologies for the delay in getting back to you on this matter.

Firstly, I must thank you and Jochen for your substantial contribution to the
eCos project which is much appreciated.

We do have some issues to work through with you:

The eCos maintainers are in agreement that your implementation of support for
e200 cores in the form of a new eCos architectural HAL is not really in keeping
with the intended layering of eCos hardware support. Your e200 HAL package
necessarily includes a lot of code copied from the standard PowerPC
architectural HAL and we would wish to see any architecture-level support for
e200 integrated into the standard PowerPC architectural HAL directly to avoid
code duplication.

In order to provide the right foundation for future PowerPC variant support,
eCosCentric will be contributing a patch for the standard eCos PowerPC
architectural HAL which adds architecture-level support for Book-E processors
in general (including e200). I would expect this contribution to be checked-in
to our public CVS repository in the next few days.

Would you be able to migrate your MPC5xxx contribution to use the updated
PowerPC architectural HAL? I am advised that the changes required to your own
contribution should be minor and the resulting contribution would then be much
more beneficial for the future of eCos on PowerPC. Of course, you may wish to
wait for, and review, the updated PowerPC architectural HAL before responding
to this question.

Thanks, again, for supporting eCos.


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