Rocket

This is the undergoing refactor project of rocket core.

Refactor Procedure

Here are some notes for refactoring:

• There will be two projects: rocket and diplomatic, rocket will depend on chisel3, tilelink projects, diplomatic is the source code originally pulled from rocket-chip, and it will depend on rocket-chip for using diplomacy and cde.
• There won't be any unrelated change during this refactoring.
• Upstream rocket core from rocket-chip bug fixes will be cherry-picked to this project.

Architecture

./cosim
├── elaborate
│   └── src
│       ├── Convert.scala
│       ├── CosimConfig.scala: Configuration for rocket core
│       ├── DUT.scala
│       ├── GrandCentral.scala
│       ├── Main.scala
│       ├── TestBench.scala: Integrates DUT and VerificationModule
│       └── VerificationModule.scala: Use C++ to test DUT in System Verilog
└── emulator: C++ files

./diplomatic/
├── resources
└── src
    └── rocket: Rocket core separated from rocket chip, still using CDE and Diplomacy

./rocket: This rocket core only depends on chisel3 and Tile Link

Commands (Ubuntu 20.04)

1. Download the project

   git clone https://github.com/QL1115/rocket.git
   cd rocket

2. Install mill 0.10.0, protobuf-compiler, antlr4, clang

   sudo apt-get update
   sh -c "curl -L https://github.com/com-lihaoyi/mill/releases/download/0.10.0/0.10.0 > ~/.local/bin/mill && chmod +x ~/.local/bin/mill"
   sudo apt-get install antlr4
   sudo apt-get protobuf-compiler
   sudo apt-get install clang

3. set environment variable RISCV_TESTS_ROOT

   export RISCV_TESTS_ROOT=<path_to_rocket_installation>/riscv_tests_root/

4. Compile the project

   make init
   make bsp
   make compile

After make compile completes, you can find the generated System Verilog files in the ./out/cosim/mfccompile/<32/64>/compile.dest folder.