Efga design open source framework fabulous series (I) establishment of development environment

I am a snowy fish , a FPGA lovers , The research direction is FPGA Architecture exploration .
Notes sync in my Personal website updated , Welcome to check .
At present, we are studying eFPGA, The latest published by the academic circles is used for eFPGA The open source framework designed is FABulous, Project open source .
This framework will be used in my subsequent research , Therefore, build the development environment first , The process is recorded as follows .

One 、 Download and compile

System ：Ubuntu20.04
In the directory to be stored , Open the terminal , Input ：

git clone https://github.com/FPGA-Research-Manchester/FABulous

Because the project has branches , Input again

cd FABulous
git clone --branch fabulous https://github.com/FPGA-Research-Manchester/nextpnr

There are a large number of files , Wait patiently

Then compile , use CMAKE .

cd nextpnr
cmake . -DARCH=fabulous

Re execution ：

make -j$(nproc)
sudo make install

Come here FABulous The development environment of the framework is compiled and built .

Two 、 Possible errors during compilation

（1）Could NOT find Boost (missing: Boost_INCLUDE_DIR filesystem program_options
iostreams system thread)

Problem analysis ： The lack of Boost Caused by Library .
resolvent ：
Download and install the library first , See my other blog for details : ubuntu20.04 Download and install boost, And on again FABulous/nextpnr/CMakeLists.txt Configuration path
add to ：

# for boost
set(BOOST_ROOT "/home/jc-cao/app_download_address/boost/boost_1_70_0/boost ")
set(BOOST_LIBRARYDIR "/usr/local/lib")
set(Boost_INCLUDE_DIR "/usr/local/include")
set(DBoost_DEBUG=OFF) # set ON to debug
set(BOOST_FIND_MINIMUM_COMPONENTS serialization system filesystem thread program_options date_time timer chrono regex)
find_package(Boost REQUIRED COMPONENTS ${BOOST_FIND_MINIMUM_COMPONENTS})
include_directories(${Boost_INCLUDE_DIR})

notes ： The above path is mine , Modify it according to your actual path

Re execution ：

cmake . -DARCH=fabulous

You can see boost The problem of missing libraries has been solved , But there are new problems . Continue to solve
(2)Could not find a package configuration file provided by “Eigen3” with any
of the following names:
Specific error information ：

CMake Error at CMakeLists.txt:227 (find_package):
  Could not find a package configuration file provided by "Eigen3" with any
  of the following names:

    Eigen3Config.cmake
    eigen3-config.cmake

  Add the installation prefix of "Eigen3" to CMAKE_PREFIX_PATH or set
  "Eigen3_DIR" to a directory containing one of the above files.  If "Eigen3"
  provides a separate development package or SDK, be sure it has been
  installed.

Problem analysis ： The lack of Eigen3 Caused by Library .
resolvent ： Just download and install

sudo apt-get install libeigen3-dev

3、 ... and 、FABulous Demo test

3.1 modify create_basic_files.sh

stay FABulous The root directory , Input

cd fabric_generator
vim create_basic_files.sh

Yes create_basic_files.sh Make changes , Because there are grammatical errors without modification , It's ridiculous .
It is amended as follows ：

cp ../fabric_files/generic/*.* ./
mkdir -p npnroutput
mkdir -p vproutput

After modification , Exit and save , Input again ：

./create_basic_files.sh

• npnroutput The folder is used to store nextpnr Output file for
• vproutput Folder Used to store vpr Output file for

3.2 Python Environment building

FABulous Many scripts use python Written , There are related third-party library dependencies , And my ubuntu20.04 Installed Anconda, So I'm going to work for FABulous Create a virtual environment , Easy to manage .
Input ：

conda create -n FABulous python=3.7

Then input yes Can be confirmed ：

Start the virtual environment FABulous:

source activate FABulous

Installation package ：

pip3 install fasm
pip3 install numpy

3.3 Demo function

stay FABulous Input in virtual environment

./run_fab_flow.sh

Output ：

If you want to save the running results as log, Enter the following code ：

./run_fab_flow.sh > FABulous_run1.log

The generated files and folders are shown in the red box in the above figure . among verilog_ouput and vhdl_output Contains the generated complete fabric Of RTL Code .

thus FABulous The development environment is set up , And also a simple test , Proof can be used to describe by entering something eFPGA Architecturally csv file , The corresponding Fabric Net watch （ Two kinds of , They use Verilog and VHDL Written ）