Google Git
Sign in
foss-eda-tools / third_party / opencircuitdesign.com / open_pdks / 2d93509249763cb83dae021fd0dbf3c79e262f47
commit2d93509249763cb83dae021fd0dbf3c79e262f47[log] [tgz]
authorTim Edwards <tim@opencircuitdesign.com>Tue Apr 25 19:57:43 2023 -0400
committerTim Edwards <tim@opencircuitdesign.com>Tue Apr 25 19:57:43 2023 -0400
tree77afc3998c260bf209a9837d870109a4c4cc3bc9
parenta694f1c5a58b197ee3800e33539b654a69be182e [diff]
Added netlists for the analog pads introduced (as layout) in the last commit,
and collected the analog pad netlists into a single file.  Added scripts to
modify the SkyWater layouts for the low-voltage clamp power and ground pads
in the same was as was previously done for the high-voltage clamp pads, which
is to isolate the connection to VDDIO_Q or VSSIO_Q with a metal 3 resistor
ring so that the "quiet" busses remain separated for LVS.  Modified existing
netlists to account for the addition of the two extra isolated pad pins
inside the metal 3 resistor ring.
13 files changed
tree: 77afc3998c260bf209a9837d870109a4c4cc3bc9
  1. .github/
  2. common/
  3. gf180mcu/
  4. runtime/
  5. scripts/
  6. sky130/
  7. .gitignore
  8. configure
  9. docs.txt
  10. LICENSE
  11. Makefile.in
  12. README.md
  13. VERSION
README.md

Open-PDKs (open_pdks)

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.