I need to talk to a FPGA via P1033 Local Bus. What are the relative merits of doing this via GPCM versus via UPM.?
It's not clear from the P1022/P1013 manual what advantages are conveyed by one method of access over the other. This is on bare-metal so OS considerations (e.g. existing support in Linux) aren't relevant..
I've looked at the U-Boot code, but they don't seem to do memory access by either method, though initial configuration of a UPM is done.
Any thought on which LBC access method is to be preferred for my application?