| tag | ddb32e6002153f393d6262fe596c6cbda389c162 | |
|---|---|---|
| tagger | Tim Edwards <tim@opencircuitdesign.com> | Thu Jun 10 03:00:32 2021 -0400 |
| object | 1c74f85cd8dbb6c0cf514316b127d746d35d829b |
"Tagging version 1.0.176"
| commit | 1c74f85cd8dbb6c0cf514316b127d746d35d829b | [log] [tgz] |
|---|---|---|
| author | Tim Edwards <tim@opencircuitdesign.com> | Wed Jun 09 16:46:50 2021 -0400 |
| committer | Tim Edwards <tim@opencircuitdesign.com> | Wed Jun 09 16:46:50 2021 -0400 |
| tree | 317d1974a5dacf3d4bd91cfceac17c9443880762 | |
| parent | cc82b606c3f50baedfcbd99567652e828739ff41 [diff] |
A number of changes, mostly to the SPICE libraries and netlists in support of Xyce (without compromising support for ngspice). Also: Additional Monte Carlo parameters were found in PSPICE format in the models and have been converted to something ngspice-compatible. The 11V NPN GDS cell name was changed to allow correct extraction from magic and prevent shadowing the model name. The Monte Carlo switch parameter behavior was changed again to make a separate set of library sections for mismatch-enabled corners vs. the original corners, which have been configured to have mismatch disabled. This avoids any requirement to add a parameter definition to every testbench for sky130. Xyce compatibility includes changing '$' comments to ';', which is also ngspice compatible, and adding the library section name after '.endl', which is also ngspice-compatible. Complete Xyce support requires a change to the all.spice file and calls to function agauss(), the solution to which has not yet been determined.
Summary:
Automatic setup of PDKs for open-source tools from foundry sources.
Builds out and populates a new set of directories and subdirectories in the efabless format, with the efabless name for the PDK at the top, followed by categories “libs.ref” (IP) and “libs.tech” (EDA tool setup), each with subcategories corresponding to layout, abstract views, netlists, etc. for the IP; and magic, netgen, qflow, etc., for the EDA tool setup.
The populated PDK directories can contain either copies of files from the foundry sources, links to the foundry sources, or links back to another PDK.
Generates magic layout views for all vendor IP for which either a GDS view or a LEF view exists. Annotates the views as needed to handle ports, bounding boxes, etc.
This distribution contains sources for building out the SkyWater SKY130 130nm process. Sources for the foundry process data must be obtained separately. Read the README file in subdirectory sky130/ for instructions on obtaining and building the SkyWater sky130A PDK.
License:
Open_PDKs is open-source software distributed under the Apache-2.0 license. See file LICENSE for the complete license text.
Instructions:
git clone https://github.com/RTimothyEdwards/open_pdks.git cd open_pdks ./configure [options] make [sudo] make install
where the configure [options] are specific to each foundry PDK supported by open_pdks and can be queried using
./configure --help
At a minimum you will want to pass a configure option to declare the location of the PDK vendor source distribution (which can be obtained separately),
./configure --enable-[PDK_name]-pdk=[path]
The open_pdks version of the PDK can be built locally within open_pdks without the need to declare an install target or run “make install”. However, it is recommended to declare a target location and install there, using
./configure --enable-[PDK_name]-pdk=[path] --with-[PDK_name]-local-path=[path]
followed by “make” and “make install”.
Also see the website at http://opencircuitdesign.com/open_pdks/. The “Install” page has full instructions for configuring and installing open_pdks.