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foss-eda-tools / third_party / opencircuitdesign.com / open_pdks / 4e5bf2157a5fa7a4216b8a51a322be57a25f49ce
commit4e5bf2157a5fa7a4216b8a51a322be57a25f49ce[log] [tgz]
authorTim Edwards <tim@opencircuitdesign.com>Wed Jan 06 13:11:31 2021 -0500
committerTim Edwards <tim@opencircuitdesign.com>Wed Jan 06 13:11:31 2021 -0500
tree957163efe1f9ba712c4c801773140164306bea0c
parent49fc7125db927de199d1f69e002beadc0a29881b [diff]
Modified the magic techfile to remove the CELLRING templayer from the
GDS output, as it is being replaced by the "mask-hints" method.  Added
mask hints to the top_gpiov2 cell from the Makefile for sky130A so
that the GPIO cell does not generate bit trash on the HVI mask due to
remaining inconsistencies in the way the GDS for the cell is read into
magic.  Updated VERSION and also the required magic version for using
this tech file (8.3.111), since only revision 111 will correctly handle
the mask-hints method.
4 files changed
tree: 957163efe1f9ba712c4c801773140164306bea0c
  1. .travisCI/
  2. common/
  3. scripts/
  4. sky130/
  5. .gitignore
  6. .travis.yml
  7. configure
  8. LICENSE
  9. Makefile.in
  10. README
  11. README.md
  12. 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
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 --with-[PDK_name]-source=[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 --with-[PDK_name]-source=[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.