Raptor Project

New Processor Core (NPC) with RISC-V ISA. Hardware generation is done using SystemVerilog and Chisel (Scala).

Candidate ip core name: raptor-0.1.0-falcon (rt-f).

Microarchitecture

Core Documentation

Build Setup

Suggest install tmux for better terminal management. [surfer]¹ for wave viewer. [colima]² for Linux container.

./setup.sh

# Optional: install espresso if you need
wget https://github.com/chipsalliance/espresso/releases/download/v2.4/arm64-apple-macos11-espresso

Build and Run

# 0. environment variables at project root directory
source ./env.sh

# 1. build and run NEMU
cd $NEMU_HOME && make riscv32_linux_defconfig && make && make run

# 2. build and run NPC
cd $NSIM_HOME/ssrc && make verilog
cd $NSIM_HOME && make menuconfig && make ARCH=riscv32e-npc run

# 3. build and run the program you want

## n. running nanos-lite on nemu
cd $NAVY_HOME && make ISA=$ISA fsimg
cd $NAVY_HOME/apps/menu && make ISA=$ISA install
cd $YSYX_HOME/nanos-lite && make ARCH=$ISA-nemu update run
cd $YSYX_HOME/nanos-lite && make ARCH=$ISA-nemu run
## n.vme running nanos-lite on nemu with VME
cd $YSYX_HOME/nanos-lite && make ARCH=$ISA-nemu update run FLAGS="-b" VME=1

## n+1. running busybox on nemu (Linux required)
cd $NAVY_HOME/apps/busybox && colima ssh # login to Linux container
make ARCH=riscv32-nemu install

## 2n. running microbench/coremark on npc
cd $YSYX_HOME/am-kernels/benchmarks/coremark && \
    make ARCH=riscv32e-npc run FLAGS="-b -n"
cd $YSYX_HOME/am-kernels/benchmarks/microbench && \
    make ARCH=riscv32e-npc run FLAGS="-b -n"
# FLAGS="-b -n" is optional, -b is for batch mode, -n is for no wave trace

## fpga. running on gowin-tang-nano-20k
### follow `fpga/gowin-tang-nano-20k/README.md`

## package all sv files into one
cd nsim && make pack

Run OpenSBI & Linux Kernel

See Linux Kernel

Reference

• Specifications – RISC-V International
• riscv/riscv-isa-manual: RISC-V Instruction Set Manual
• riscv-software-src/riscv-unified-db: Machine-readable database of the RISC-V specification, and tools to generate various views
• "一生一芯"

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1. https://surfer-project.org/ ↩︎

2. https://github.com/abiosoft/colima ↩︎