2022-02-25 19:56:36 +08:00
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# Weekend group
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2023-01-04 22:40:08 +08:00
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## helloworld
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This a demo for llvm build and sim with verilator.
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## jtag
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This is a demo of jtag simulation by openocd running on verilator.
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## install verilator
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`sudo apt install verilator`
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## install openocd
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```shell
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git clone https://github.com/riscv/riscv-openocd.git
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cd riscv-openocd
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./bootstrap
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./configure --prefix=$RISCV --enable-remote-bitbang --enable-jtag_vpi --enable-ftdi --enable-jlink
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make
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sudo make install
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```
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## may be install sv2v
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`https://github.com/zachjs/sv2v`
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## install ninja
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`sudo apt-get install -y ninja-build`
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## Gen quasar core
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```bash
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git clone https://github.com/Lampro-Mellon/Quasar.git
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cd tools
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vim configs/quasar.config # to config the core
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make clean
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make conf
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make sbt_
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# Quasar/generated_rtl/quasar_wrapper.sv
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```
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## install Bit-Vector
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```bash
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wget https://cpan.metacpan.org/authors/id/S/ST/STBEY/Bit-Vector-7.4.tar.gz
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tar -xvf
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cd
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perl Makefile.PL
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make
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sudo make install
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```
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## build and install riscv tools
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* Opetion1 :<https://github.com/riscv-collab/riscv-gnu-toolchain.git>
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```bash
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# build 64bit
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sudo make clean
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./configure --prefix=/opt/riscv
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sudo make -j12
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# build 64bit and 32bit
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sudo make clean
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./configure --prefix=/opt/riscv --with-arch=rv32gc --with-abi=ilp32d --enable-multilib
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sudo make -j12
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```
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* Opetion2 :
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```bash
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sudo apt-get install autoconf automake autotools-dev curl libmpc-dev libmpfr-dev libgmp-dev libusb-1.0-0-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev device-tree-compiler pkg-config libexpat-dev libfl-dev
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git clone https://github.com/chipsalliance/rocket-tools.git
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git submodule update --init --recursive
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# riscv-isa-sim and openocd may be checkout to main branch to avoid compile error
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sudo su
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export RISCV=/opt/riscv
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export MAKEFLAGS="-j12"
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./build-rv32ima.sh
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```
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2022-03-20 17:06:02 +08:00
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## tips
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2022-03-27 17:56:02 +08:00
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* jtag的reset引脚要设置正确 jtag_trst_n 低电平复位
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2022-03-20 17:06:02 +08:00
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* 仿真的时候jtag的tclk不能太快，要低于soc的clk
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2022-03-27 17:56:02 +08:00
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* SweRV启动/复位后程序从`reset_vec`(0x80000000)开始，遇到错误（code=0），就会跳到mtvec(中断向量表)指示的地址
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2022-03-20 17:06:02 +08:00
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* 物理仿真的时候 adapter speed 不能太快
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* data段放到0x200太小，GDB调试RISCV至少要4K的程序空间？
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* soc的ram和rom直接接到了lsu和ifu，和DCCM/ICCM无关
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2022-03-27 17:56:02 +08:00
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* program.hex 用于 $readmemh 必须以空行结束
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## Todo
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* gdb怎么复位soc
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* gdb没有把程序加载到mem，ifu还是用老代码
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* mem分bank后，怎么加载，用于仿真=>for循环分别加载
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2022-11-03 17:00:26 +08:00
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* Quasar升级scala版本发现openocd运行不正常
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