| commit | 96ef31b9ec6a6fe671f434a9c7534f232057724a | [log] [tgz] |
|---|---|---|
| author | Tim Edwards <tim@opencircuitdesign.com> | Mon May 27 10:08:35 2024 -0400 |
| committer | Tim Edwards <tim@opencircuitdesign.com> | Mon May 27 10:08:35 2024 -0400 |
| tree | d892ea043a0fcfb7e8a8e59fd8829ec237295331 | |
| parent | bba8744a60162c27cbf86fb30d926483ff768404 [diff] |
Updated the reference git hashes again after a fix to the OpenRAM "sky130_sram_macros" library. The update to sky130_sram_macros was done by Mitch Bailey and updates the name of the pFET latch device (which had been changed from the semantically incorrect "pfet_pass" in the original open PDK), as well as renaming the short (W=0.36um) FET device that is outside the bounds of the continuous-binned models and so had to be recast to a different device type; and corrects the dimensions of the tucked-under portion of the pFET devices in the SRAM core, another long-standing error due to improper parsing of the physical structure of the device when the netlist was first generated for the open PDK. No changes have been made to open_pdks itself other than to update the git hash references and increment the version number.
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.