Allegro is the PCB design layout entry and simulation tool used in all the Cypress development kit. You can download those files from the website in PSoC4M kit design files (http://www.cypress.com/file/229076/download). Eagle has some issue opening layout files created via Allegro. So, the issue can be resolved if we use Allegro (whose some trial version are also available, i guess).
I'm looking for eagle design support packages for the 483-axi chips (the ones on the 4200 049 kits)
Does anyone know if/where these can be found?
I think I found them on the cypress home page but these wont open,
The design files for the mentioned kit are here PSoC® 4 CY8CKIT-049 4xxx Prototyping Kits in Related Files section.
However, as stated above, there were made using Allegro.
Here are footprints for Allegro and Altium: http://www.cypress.com/cad-resources/psoc-4-cad-libraries
I would also appreciate if there were design files for EAGLE. On the other hand, EAGLE is now part of Autodesk, so they might add the support to exchange the libraries between their products, one day...