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GPCM vs. UPM for FPGA access?

Question asked by Steven Snyder on May 17, 2016
Latest reply on May 18, 2016 by Serguei Podiatchev

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?

 

Thanks.

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