verilearning

我的Verilog学习记录

工具链：

• Verilator (Home)
  • sudo apt install verilator
  • git clone https://github.com/verilator/verilator.git
    1. cd verilator
    2. unset VERILATOR_ROOT
    3. git checkout stable
    4. autoconf
    5. ./configure --prefix=/opt/verilator
    6. make -j N N = 1, 2, 3, 4...
    7. sudo make install
• GTKWave (Home)
  • sudo apt install gtkwave
• Xilinx Vivado (Optional)

RISC-V GNU Toolchain

$ git clone https://github.com/riscv-collab/riscv-gnu-toolchain.git
$ ./configure --with-arch=rv32im --with-abi=ilp32 --prefix=/opt/riscv
$ sudo make -j 8

LLVM

$ git clone https://github.com/llvm/llvm-project.git
$ cd llvm-project/
$ mkdir build && cd build
$ cmake -G "Unix Makefiles" \
        -DCMAKE_BUILD_TYPE="Release" \
        -DLLVM_ENABLE_PROJECTS="clang;lld" \
        -DLLVM_TARGETS_TO_BUILD="RISCV" \
        -DLLVM_DEFAULT_TARGET_TRIPLE='riscv32-unknown-unknown-elf' \
        -DCMAKE_INSTALL_PREFIX="/opt/llvm-riscv" ../llvm
$ make -j8
$ sudo make install

内存不足时

错误信息：

c++: fatal error: Killed signal terminated program cc1plus

创建交换空间：

sudo mkdir -p /var/cache/swap                                    // 1st time only
sudo dd if=/dev/zero of=/var/cache/swap/swap0 bs=64M count=64    // 1st time only
sudo chmod 0600 /var/cache/swap/swap0                            // 1st time only
sudo mkswap /var/cache/swap/swap0                                // Everytime
sudo swapon /var/cache/swap/swap0                                // Everytime
sudo swapon -s                                                   // Option

在这里重新 make

释放交换空间：

sudo swapoff /var/cache/swap/swap0                               // Everytime
sudo rm /var/cache/swap/swap0                                    // Everytime
sudo swapoff -a                                                  // Everytime

---

git promopt 优化： here

wget https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh

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关于目录结构：
$\qquad\qquad\quad 0\textup{x}[A][B][C][D]\_[E]$

• $A$: 保留
• $B$: 功能目录（L2）
• $C$: 逻辑功能（L1）
• $D$: 逻辑实现（同一逻辑功能的不同实现）
• $E$: 实装名称