Supports on embedded linux

[raindroid]

Hi, thanks for the amazing tool. I am not sure if this is any bug, but I am wondering if XBERT can be used on a mpsoc embedded Linux system with the FPGA manager. In detail, I used the hosted_tool to generate *.mdd and *.ll files and am able to update the full bitstream manually. The embedded piece is based on xilfpga and the wiki said the xilfpga is designed to run on standalone BSPs, so I am curious if I can modify the XBERT and use it in a Linux environment instead? Thanks

[dehon]

On Aug 17, 2021, at 1:23 AM, raindroid ***@***.***> wrote: Hi, thanks for the amazing tool. I am not sure if this is any bug, but I am wondering if XBERT can be used on a mpsoc embedded Linux system with the FPGA manager. In detail, I used the hosted_tool to generate *.mdd and *.ll files and am able to update the full bitstream manually. The embedded piece is based on xilfpga and the wiki <https://urldefense.com/v3/__https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841910/Xilfpga__;!!IBzWLUs!EkUDGPJ9H6_BnrssxeD-ARSISAiN4KgbqbnSq_cux1gZcsyEVq4FK_QLpo0gerVJMg$> said the xilfpga is designed to run on standalone BSPs, so I am curious if I can modify the XBERT and use it in a Linux environment instead? Thanks

Thanks for your interest. We have been working with Linux this past summer, and have used XRT and OpenCL/Vitis interface (and, I believe, FPGA Manager which is under those things) to load partial bitstreams. We have not found a way to read partial bitstreams (which would be necessary to get all the BERT features) using the Linux interface. I don’t think we’ve automated a version of bert.c that runs on top of XRT (FPGA Manager), yet. We are currently working out some (orthogonal, we think) issues that we ran into while working with Linux and DFX. So, I think the answer is: we believe this is possible, and have some work on it, but it isn’t trivial, so it will take a bit longer.

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[matth2k]

For embedded linux, you can generate bitstreams on a host machine (all you need is the .dcp, .mdd and .ll). Then sideload them onto the MPSOC.

Then run fpgautil -b bert_bitstream.bit -f Partial to write to the BRAM.

You can not do any readback, but you can at least set up BRAM configurations with the bitstream_gen tool.