Rv32ima - GoKawiil

Developer Publishes Open-Source RISC-V Emulator That Boots Linux From Scratch

A new open-source repository accompanies a technical blog post detailing how to build a rv32ima instruction-set emulator and run a minimal Linux system on it from the ground up. The project includes emulator code, a small set of emulated devices, machine configuration files, and WebAssembly-exposed functions, along with the Linux build configs needed to reproduce the setup.

github.com · 2026-09-07

Developer builds minimal RISC-V emulator in C++ to bootstrap Linux kernel

A developer documented the process of bringing up the Linux kernel on a new platform by writing a lightweight emulator for a RISC-V CPU rather than using real hardware. The emulator, built in roughly 2000 lines of C++ and implementing the RV32IMA instruction set, provides just enough hardware simulation—MMU support, RAM, an SBI interface, a system timer, and a WD8250-based UART—for Linux to boot. The full source is published on GitHub under WerWolv/riscv-emulator.

werwolv.net · 2026-09-03