| commit | 559a117b163cef2f920f33f30f6f690aa0b47e4c | [log] [tgz] |
|---|---|---|
| author | Tim Edwards <tim@opencircuitdesign.com> | Tue Oct 24 15:31:46 2023 -0400 |
| committer | Tim Edwards <tim@opencircuitdesign.com> | Tue Oct 24 15:31:46 2023 -0400 |
| tree | ee3b84df8d6d2ff55b598f41c216ac773ccc1794 | |
| parent | 4f5c1995d629acef895c81bf07c2ba13213d195c [diff] |
Multiple changes to multiple PDKs: 1) Fixed the gf180mcu_fd_io GDS. Previously the GDS was being updated with a modification after building the magic database files with GDS file pointers, rendering the file pointers incorrect. The script has been moved to a filter so that it occurs before the magic database files are generated. 2) The gf180mcu device generator script updated mainly to remove the drain-extended and asymmetric devices from the device menu, since the drawing routines are unfinished (work in progress). 3) The sky130 tech file updated to add the extended drain layer, along with GDS generation rules and DRC rules. The device generator for the extended drain devices is still a work in progress. 4) The gf180mcu "torture test" script corrected for device names and updated with additional devices. 5) The xschemrc file for gf180mcu updated to add the PDK path corresponding to the open_pdks installation location.
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 PDK that you want to build. It is possible to build multiple PDKs at once, but not recommended due to the large memory and disk space overhead required by each one.
./configure --enable-[PDK_name]-pdk
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 highly recommended to declare a target location and install there, using
./configure --prefix=[path] --enable-[PDK_name]-pdk
followed by “make” and “make install”. The default install location is /usr/local/share/pdk ([path] above is /usr/local). The install location should be a read-only filesystem area for regular users, since the PDK contents should not be altered.
Also see the website at http://opencircuitdesign.com/open_pdks/. The “Install” page has full instructions for configuring and installing open_pdks.