It is now possible to download the code for PMON2000 R3.x from CVS. Note that you should grab pmon2000 instead of pmon to get the new version.
This version currently have no code for powerpc. If you want to contribute to change that please feel free to do so.
This code is mainly provided for system integrators and there is not many targets supported 'out of the box'. BSPs exist for a couple of PMC-Sierra evaluation boards and for the Linksys NSS4000 and NSS6000.
The documentation is still 'work in progress' and will be expanded over time.