3d_gpu.mdwn

   1 # RISC-V 3D GPU / CPU / VPU
   2
   3 Note: this is a **hybrid** CPU, VPU and GPU.  It is not, as many news articles
   4 are implying, a "dedicated exclusive GPU".  The option exists to **create**
   5 a stand-alone GPU product.  It is being *designed* to be a **complete**
   6 all-in-one processor (System-on-a-Chip).
   7
   8 We seek investors, sponsors, engineers and potential customers, who are
   9 interested in the creation and use of an entirely libre low-power mobile
  10 class system-on-a-chip.  Comparative benchmark performance, pincount and
  11 price is the Allwinner A64, except that the power budget target is 2.5 watts
  12 in a 16x16mm 320 to 360 pin 0.8mm FBGA package.
  13
  14 See:
  15
  16 * [[libre_3d_gpu]]
  17 * [[discussion]]
  18 * <http://lists.libre-riscv.org/pipermail/libre-riscv-dev/>
  19 * <https://www.crowdsupply.com/libre-risc-v/m-class>
  20
  21 Progress:
  22
  23 * Feb 2019: Conversion of John Dawson's IEEE754 FPU to nmigen started
  24 * 2017 - Nov 2018: Simple-V specification preliminary draft completed
  25 * Aug 2018 - Nov 2018: spike-sv implementation of draft spec completed
  26 * Aug 2018: Kazan Vulkan Driver initiated
  27 * Sep 2018: mailing list established
  28 * Sep 2018: Crowdsupply pre-launch page up (for updates)
  29 * Dec 2018: preliminary floorplan and architecture designed (comp.arch)
  30
  31 # News Articles
  32
  33 * <https://hub.packtpub.com/a-libre-gpu-effort-based-on-risc-v-rust-llvm-and-vulkan-by-the-developer-of-an-earth-friendly-computer/>
  34 * <https://riscv.org/2018/10/packt-hub-article-a-libre-gpu-effort-based-on-risc-v-rust-llvm-and-vulkan-by-the-developer-of-an-earth-friendly-computer/>
  35 * <https://www.reddit.com/r/RISCV/comments/9jts9t/theres_a_new_libre_gpu_effort_building_on_riscv/>
  36 * <https://www.linux.com/blog/2018/11/risc-v-linux-development-full-swing>
  37 * <https://www.phoronix.com/scan.php?page=news_item&px=Libre-GPU-RISC-V-Vulkan>
  38 * <https://www.heise.de/newsticker/meldung/Mobilprozessor-mit-freier-GPU-Libre-RISC-V-M-Class-geplant-4242802.html>
  39 * <https://news.ycombinator.com/item?id=18094734>
  40 * <http://www.tuxmachines.org/node/116004>
  41 * <https://linuxfr.org/users/martoni/journaux/risc-v-est-pret-pour-le-desktop>
  42 * <https://www.reddit.com/r/hardware/comments/9jlby1/theres_a_new_libre_gpu_effort_building_on_riscv/>
  43 * <http://www.eevblog.com/forum/crowd-funded-projects/libre-risc-v-m-class-with-open-source-gpu-and-kazan-vulkan-driver/>
  44 * <https://www.reddit.com/domain/libre-riscv.org/>
  45 * <https://hardware.slashdot.org/comments.pl?sid=13447940&cid=58160868>
  46 * <https://www.phoronix.com/forums/forum/hardware/graphics-cards/1080755-libre-risc-v-gpu-aiming-for-2-5-watt-power-draw-continues-being-plotted/page5>
  47
  48 # Information Resources and Tutorials
  49
  50 * <https://github.com/timvideos/litex-buildenv/wiki/LiteX-for-Hardware-Engineers>
  51 * <https://jeffrey.co.in/blog/2014/01/d-flip-flop-using-migen/>
  52 * <http://lists.libre-riscv.org/pipermail/libre-riscv-dev/2019-March/000705.html>
  53 * <https://chisel.eecs.berkeley.edu/api/latest/chisel3/util/DecoupledIO.html>
  54 * <http://www.clifford.at/papers/2016/yosys-synth-formal/slides.pdf>