cbb9e6b02a
~ Documentation all moved under `docs/source`, arranged hierarchically according to the table of contents ~ `Klayout` changed to `KLayout` in all logging messages ~ Readme rewritten to just be concise, parts of it isolated into standalone documentation ~ RTD builds no longer use conda (saves some time) ~ Fixed all broken links
1.5 KiB
Custom-Building PDKs
The pre-built version of the sky130 PDK variants included with OpenLane includes the following standard cell libraries:
- sky130_fd_io
- sky130_fd_pr
- sky130_fd_sc_hd
- sky130_fd_sc_hvl
- sky130 sram modules
If you need other libraries, you will have to resort to manual builds using Volare as shown below. You will need Git 2.35+ and Docker.
Note that this will take a while, from 20 minutes to an hour depending on your internet speed and compute power.
Start a venv shell using make start-build-env. You should see a prompt looking kind of like this:
(venv) [user@host openlane]$
First of all, install volare:
pip3 install --upgrade --no-cache-dir volare
Then, build the PDK as follows: The -l options are the libraries you want to include. For example, to also include sky130_fd_sc_hs, you can add -l sky130_fd_sc_hs to the default set of libraries using the following command:
volare build -j$(nproc) --pdk sky130 --clear-build-artifacts --sram -l sky130_fd_io -l sky130_fd_pr -l sky130_fd_sc_hvl -l sky130_fd_sc_hd -l sky130_fd_sc_hs
You can also add -l all to just include all of them:
volare build -j$(nproc) --pdk sky130 --clear-build-artifacts --sram -l all
Either way, go grab a smoothie. This will take a while.
After it's done, you can then enable the resulting PDK as such:
volare enable
Et voila, your custom-built PDK is ready.