riscfetch

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System information tool for RISC-V. Displays ISA extensions, hart count, hardware IDs, and more.

RISC-V only. Exits on other architectures.

Features

• 144 extensions supported (98 Z-extensions + 46 S-extensions)
• Category-based display for easy reading
• 13 vendor logos including Pine64 and WCH
• JSON output for scripting
• Detailed explanation mode (-e)

Why RISC-V?

I enjoy anime, movies, and food from all over the world. Just a fan of cool tech and the future. RISC-V is fun to tinker with, and I wanted a neofetch-style tool for it.

Install

From crates.io

cargo install riscfetch

From GitHub Releases

# Download the latest release
curl -LO https://github.com/kako-jun/riscfetch/releases/latest/download/riscfetch-linux-riscv64

# Make it executable
chmod +x riscfetch-linux-riscv64

# Move to PATH
sudo mv riscfetch-linux-riscv64 /usr/local/bin/riscfetch

Usage

riscfetch              # standard output
riscfetch -a           # show all 144 extensions with ✓/✗
riscfetch -a -e        # all extensions with descriptions
riscfetch -r           # RISC-V info only (no OS, memory, etc.)
riscfetch -e           # explain each ISA extension
riscfetch -j           # JSON output
riscfetch -a -j        # JSON with all extensions
riscfetch -b           # run benchmarks
riscfetch -l pine64    # use Pine64 logo

Output

Extensions are grouped by category:

ISA:        rv64imafdcv_zicsr_zifencei_zba_zbb_zbs_sstc...
Ext:        I M A F D C V
Z-Base:     Zicsr Zifencei Zicntr Zihpm
Z-Bit:      Zba Zbb Zbc Zbs
Z-Vector:   Zvl128b Zvl256b
S-Sup:      Sstc
Vector:     Enabled, VLEN>=256
Harts:      4 harts
HW IDs:     vendor:0x489 arch:0x8000000000000007 impl:0x0
Cache:      L1D:32K L1I:32K L2:2048K

--------------------------------

Board:      StarFive VisionFive 2
OS:         Ubuntu 24.04 LTS
Kernel:     6.8.0-riscv64
Memory:     3.45 GiB / 8.00 GiB
Uptime:     3h 42m
User:       user@visionfive2

Options

Supported Vendors (13)

Supported Extensions

Standard Extensions (11)

I, E, M, A, F, D, Q, C, B, V, H

Z-Extensions (98)

Grouped by category: Base, Hints, Cache, Conditional, Bit Manipulation, Cryptography, Floating Point, Compressed, Atomics, Memory Model, Multiply, Vector, Vector Crypto

S-Extensions (46)

Grouped by category: Virtual Memory, Supervisor, Machine, Hypervisor, Debug, User

See SPEC.md for the full list.

Complements fastfetch

riscfetch shows RISC-V specific info. Use with fastfetch for full system details:

fastfetch && riscfetch -r

Contributing

Issues and pull requests are welcome!

• Bug reports
• Feature requests
• Support for new RISC-V boards
• Documentation improvements

Testing Help Wanted

We have limited hardware for testing. If you can test on any of the following, please report your results (working or not):

• RV32E (embedded with 16 registers) - e.g., ESP32-C3, CH32V003
• Non-Vector CPUs - e.g., VisionFive 2, Allwinner D1
• Different VLEN values - VLEN=128, 512, 1024, etc.

Even "it works" reports are valuable! Please open an issue with your /proc/cpuinfo and riscfetch output.

License

MIT