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Altera_Forum
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9 years ago

Custom accelerator circuit design with DMA

Good Morning, I am running a C program on Linux (builded with buildroot) on the HPS (Cyclone V, DE1-SoC Board), now I want to replace a function with a custom FPGA circuit. This function r...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

The DMA on the Cyclone V can definitely deal with this.

I can't comment on how to implement this on Linux, but here's the key information for a "bare-metal" implementation.

- The DMA is the "ARM PrimeCell" PL330 module from ARM. You can retrieve the technical manual from the ARM web-site.

- The Cyclone V handbook also has a section that greatly help understand how to use & program the PL330.

- Your requirements involves triggers and these are listed in the DMA section of the Cyclone V handbook.

- You can find the base address of the DMA registers in the Appendix section of the Cyclone V handbook.

- You should be able to use the hwlib in the SocEDS do program the PL330 for your specific needs; if not, then it should be easily modifiable

Regards