TSE (Triple Speed Ethernet) MAC on uClinux with MMU

Currently my design actually has the descriptor memory located either in onchip memory or ddr2, just like the cyclone III evkit reference design for uClinux with MMU. I think that design is available somewhere on the wiki. The only reason to also have the option of using ddr2 is because u-boot currently only uses ddr2 for the descriptor memory but it is not difficult to make u-boot also use the onchip mem for descriptor use too(i think). I have had the design where only an onchip memory of size 8192 bytes is used for descriptor mem and that seemed to work fine in uClinux.