Using Yosys with Lichee Tang

The Yosys now support Verilog synthesis for Anlogic’s FPGA. Although support is partial, it progressing towards having full synthesis support.

Prerequisites

For Ubuntu Linux 16.04 LTS the following commands will install all prerequisites for building yosys:

sudo apt-get install build-essential clang bison flex \
	libreadline-dev gawk tcl-dev libffi-dev git \
	graphviz xdot pkg-config python3

Download Yosys from Github

Clone the Yosys repository from Github.

git clone https://github.com/YosysHQ/yosys.git

Build and Install Yosys

To build Yosys simply type ‘make’ in this directory.

make
make test
sudo make install

Compile the Anlogic Demo

We are going to compile an Anlogic example from Yosys examples directory.

Setup TD environment for demo

For Place and Route, we still need Official TD tools.

set TD_HOME env variable to the full path to the TD as follow.

export TD_HOME=<TD Install Directory Path>

Finally, we are ready to build our demo.

cd examples/anlogic/
bash build.sh

This build will produce demo.bit that can be download into Lichee Tang via TD Download tool.