Top 3 C soc Projects

neorv32

77 1,415 9.9 C

:rocket: A tiny, customizable and extensible MCU-class 32-bit RISC-V soft-core CPU and microcontroller-like SoC written in platform-independent VHDL.

Project mention: An example of how to add the A ISA extension's LR/SC operations into an open-source architecture | /r/RISCV | 2023-07-24

chipyard

5 1,411 9.7 C

An Agile RISC-V SoC Design Framework with in-order cores, out-of-order cores, accelerators, and more

Project mention: Chisel: A Modern Hardware Design Language | news.ycombinator.com | 2023-12-27

It's probably true that Chisel isn't right for industry -- Google tried it too for the TPU project and eventually went back to Verilog. That said, I think it's main win is that it is great from a research / open-source perspective.
Taking advantage of the functional nature of Chisel enables a set of generators called Chipyard [0] for things like cores, networking peripherals, neural network accelerators, etc. If you're focusing on exploring the design space of one particular accelerator and don't care too much about the rest of the chip, you can get a customized version of the RTL for the rest of your chip with ease. All the research projects in the lab benefit from code changes to the generators.
Chisel even enables undergraduate students (like me!) to tape out a chip on a modern-ish process node in just a semester, letting Chisel significantly reduce the amount of RTL we have to write. Most of the remaining time is spent working on the actual physical design process.
[0]: https://github.com/ucb-bar/chipyard
[1]: https://classes.berkeley.edu/content/2023-Spring-ELENG-194-0...

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
xboot

2 779 8.4 C

The extensible bootloader for embedded system with application engine, write once, run everywhere.

Project mention: I'm new to all this. Getting an ARM Cortex A based SBC up and running on an RTOS? | /r/arm | 2023-04-24

This tiny bootloader-sized OS runs on H3: https://github.com/xboot/xboot

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).