| commit | d9f6d3870385a580b19bc800942eedb0d5df9848 | [log] [tgz] |
|---|---|---|
| author | Tim Edwards <tim@opencircuitdesign.com> | Thu Jul 06 16:47:13 2023 -0400 |
| committer | Tim Edwards <tim@opencircuitdesign.com> | Thu Jul 06 16:47:13 2023 -0400 |
| tree | af0b1be5b398d37e422f8051ba68607f7bd1cb2e | |
| parent | b6627279552bd1f0f852b1119af10effb2edafd7 [diff] |
Updated both sky130 and gf180mcu to take advantage of today's update to magic (version 8.3.411) which introduces parameter limits in device extraction records. That lets magic extract the correct device where there are unique device models corresponding to specific parameter values or value ranges. The previous way of doing this (used for sky130) involved defining identifier marker layers for each device model, but since the markers did not correspond to any foundry GDS layers, they could not be imported from GDS. With this PDK update, magic will now extract the correct model name for high-value poly resistors and bipolars. The method was extended to the gf180mcu process for bipolars, which were previously not extractable except by the "device primitive" property (which also does not work through GDS export/re-import).
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 --prefix=[path] --enable-[PDK_name]-pdk=[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.