rocket-chip
vivado-risc-v
rocket-chip | vivado-risc-v | |
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12 | 6 | |
3,011 | 738 | |
1.0% | - | |
7.8 | 7.5 | |
6 days ago | 12 days ago | |
Scala | Tcl | |
GNU General Public License v3.0 or later | - |
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rocket-chip
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Recommendations for RISC-V on FPGA
Hello. I'm looking into implementing RISC-V on an FPGA for a school project. The two repos I'm looking into using are the Ariane and RocketChip repos. Both look actively maintained, but RocketChip has more recent releases, and it's used by this other repo that creates a block design in Vivado with the RISC-V RTL. However, we would also like to be able to make changes to the core, and I'm afraid that scala/Chisel might be difficult to learn. Ariane looks like SystemVerilog while RocketChip is mostly Chisel. Does any have recommendations on which RISC-V repo would be good to use for a project?
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RISC-V Pushes into the Mainstream
You could do a trial build of an in-order Rocket RISC-V core [1] to see how much space it takes up.
[1] https://github.com/chipsalliance/rocket-chip
- Can anyone explain simply how OpenSource the RISC-V actually is?
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Stages of prototyping a RISC-V processor on an FPGA?
My definition of a RISC CPU is one that has a reduced instruction set. In other words, the category of CPU is defined by the size of the instruction set, not in how it is implemented. Consider for example RISC-V CPUs. These are defined by their open instruction set alone, in spite of the fact that many implementations of RISC-V CPUs exist: some pipelined, and some not.
- FPGA for RISC-V Processor
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How are modern processors and their architecture designed?
More complex CPUs are typically completely out of scope for hand coding, therefore you can implement generators like: https://github.com/chipsalliance/rocket-chip
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Anandtech: "IBM Power10 Coming To Market: E1080 for 'Frictionless Hybrid Cloud Experiences'"
We don't have Sifive's specifically but we do have the open source cores they've historically used to design their cores: https://github.com/riscv-boom/riscv-boom https://github.com/chipsalliance/rocket-chip
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Project ideas for RISC-V?
This would allow you to experiment with your own chip or something like [the RocketChip generator](https://github.com/chipsalliance/rocket-chip).
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Question: Does the 32bit version of Rocket still supports FPU
https://github.com/chipsalliance/rocket-chip/blob/c7da610430f51b02ebda37f3d444674dc8f2adbf/src/main/scala/system/Configs.scala#L28
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The First Affordable RISC-V Computer Designed to Run Linux
I don't know about the u74 specifically, but sifive does seem to invest in a open source risc-v core called rocket-chip.
vivado-risc-v
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Recommendations for RISC-V on FPGA
Hello. I'm looking into implementing RISC-V on an FPGA for a school project. The two repos I'm looking into using are the Ariane and RocketChip repos. Both look actively maintained, but RocketChip has more recent releases, and it's used by this other repo that creates a block design in Vivado with the RISC-V RTL. However, we would also like to be able to make changes to the core, and I'm afraid that scala/Chisel might be difficult to learn. Ariane looks like SystemVerilog while RocketChip is mostly Chisel. Does any have recommendations on which RISC-V repo would be good to use for a project?
- How can I learn about RISC-V and use case? I want to do a project for begginers
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Open-source RISC-V CPU projects for contribution
For Xilinx FPGAs : https://github.com/eugene-tarassov/vivado-risc-v
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can one run one a linux distro like debian on an fpga?
I know it would run slowly, im not interested in performance, just curious about fpga capabilities. I found the following project where apparently they instantiate a Rocket chip core and are able to run debian on it. Unfortunately there are no demo images or video, and i dont own a xilinx board, so i dont know what the system is capable of doing. Could one install a lightweight desktop environment or install packages using apt?
- Error when preparing a USB for use with an FPGA
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Running Hello World on a bare-metal RISC-V FPGA
But to save time, since you already have the Eugene Tarassov repo working running linux, you could look into modifying the bootrom for your needs. For example, you could take out all the stuff about loading files from SD card etc. and just include kprint.h and the bare minumum you need to print out over UART.
What are some alternatives?
riscv-boom - SonicBOOM: The Berkeley Out-of-Order Machine
chipyard - An Agile RISC-V SoC Design Framework with in-order cores, out-of-order cores, accelerators, and more
picorv32 - PicoRV32 - A Size-Optimized RISC-V CPU
openlane - OpenLane is an automated RTL to GDSII flow based on several components including OpenROAD, Yosys, Magic, Netgen and custom methodology scripts for design exploration and optimization.
Rudi-RV32I - A rudimental RISCV CPU supporting RV32I instructions, in VHDL
neorv32-setups - 📁 NEORV32 projects and exemplary setups for various FPGAs, boards and (open-source) toolchains.
skywater-pdk - Open source process design kit for usage with SkyWater Technology Foundry's 130nm node.
mempool - A 256-RISC-V-core system with low-latency access into shared L1 memory.
Cores-VeeR-EH1 - VeeR EH1 core