Caravel User Project

Libresilicon StdCellLib LS130 - SKY130 Test-wafer

This project is a test-wafer which puts various LS130 cells into the user-area of a Caravel harness for taping the LS130 cells out on the Skywater 130nm process.

The LS130 cells are generated with the https://github.com/thesourcerer8/StdCellLib flow (which uses Librecell's lclayout and lctime), using the Tech.SKY130 configuration.

The build report can be seen here: https://pdk.libresilicon.com/dist/StdCellLib_20201106_SKY130/Catalog/ The cells were copied into this repository to avoid additional dependencies: https://github.com/thesourcerer8/caravel_stdcelllib_stdcells/tree/release/cells

A generator was developed to generate a Verilog file for all the cells that places each cell once and connects it to the IOs of the harness: https://github.com/thesourcerer8/caravel_stdcelllib_stdcells_project/blob/release/scripts/generator.pl The script needs to be run from the Catalog directory of your StdCellLib. The output is then used as https://github.com/thesourcerer8/caravel-stdcelllib-stdcells/blob/release/verilog/rtl/user_proj_example.v

In the end I adapted https://github.com/thesourcerer8/caravel_stdcelllib_stdcells_project/blob/release/openlane/user_proj_example/config.tcl to use the cells as blackbox cells.

Build process:

git clone git@github.com:thesourcerer8/caravel_stdcelllib_stdcells_project.git

cd caravel_stdcelllib_stdcells_project

Now please adapt the pathes in the file env.sh where necessary

. ./env.sh

make install # install caravel-lite make pdk # clone and build pdk make openlane # clone and build build openlane

scripts/deploy2caravel.sh

make user_proj_example

Refer to README for the Caravel documentation.