Restructure the repository

README.md

@@ -19,15 +19,21 @@ This package contains the Skywater 130nm PDK for KLayout.
 
 ### Installation
 
-You have two options for using this package:
+You have two options for installing this package:
 
-1. Clone this repository
-2. Install the complete sky130 PDK from [open_pdks](https://github.com/RTimothyEdwards/open_pdks) either manually or with [volare](https://github.com/efabless/volare). The PDK also includes this package.
+- Clone this repository
+- Install the complete sky130 PDK via [open_pdks](https://github.com/RTimothyEdwards/open_pdks) or [volare](https://github.com/efabless/volare). The PDK also contains this package.
 
-When you start KLayout, you must load this package. This can be done by setting the environment variable `KLAYOUT_PATH`. For example, inside this repository:
+For this package to be available in KLayout, you need to set the environment variable `KLAYOUT_PATH` to point to the root directory of this repository. For example, within this repository:
 
 ```console
-KLAYOUT_PATH=./sky130_tech klayout -e
+KLAYOUT_PATH=. klayout -e
+```
+
+Or at another directory:
+
+```console
+KLAYOUT_PATH=/path/to/sky130_klayout_pdk klayout -e
 ```
 
 ### PCells
@@ -41,3 +47,11 @@ pip install --upgrade gdsfactory
 
 > [!IMPORTANT]  
 > If you are using a Linux distribution that discourages the installation of system-wide Python packages through pip, you need to pass `--break-system-packages`.
+
+## Acknowledgement
+
+The XSection and D25 setup are gratefully borrowed from: [sky130A_el](https://github.com/klayoutmatthias/sky130A_el).
+
+## License
+
+If not otherwise noted [The Apache License, version 2.0](https://www.apache.org/licenses/LICENSE-2.0.txt).

tech/sky130/d25/sky130.lyd25

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+<klayout-macro>
+ <description>D25 View</description>
+ <version/>
+ <category>d25</category>
+ <prolog/>
+ <epilog/>
+ <doc/>
+ <autorun>false</autorun>
+ <autorun-early>false</autorun-early>
+ <priority>0</priority>
+ <shortcut/>
+ <show-in-menu>true</show-in-menu>
+ <group-name>efabless_sky130</group-name>
+ <menu-path>efabless_sky130>end("Efabless sky130").end</menu-path>
+ <interpreter>dsl</interpreter>
+ <dsl-interpreter-name>d25-dsl-xml</dsl-interpreter-name>
+ <text>poly = input(66, 20)
+licon = input(66, 44)
+li = input(67, 20)
+mcon = input(67, 44)
+met1 = input(68, 20)
+via1 = input(68, 44)
+met2 = input(69, 20)
+via2 = input(69, 44)
+met3 = input(70, 20)
+via3 = input(70, 44)
+met4 = input(71, 20)
+via4 = input(71, 44)
+met5 = input(72, 20)
+
+
+z(poly, height: 250.nm)
+z(licon, height: 400.nm)
+z(li, height: 200.nm)
+z(mcon, height: 350.nm)
+z(met1, height: 300.nm)
+z(via1, height: 350.nm)
+z(met2, height: 300.nm)
+z(via2, height: 350.nm)
+z(met3, height: 300.nm)
+z(via3, height: 350.nm)
+z(met4, height: 500.nm)
+z(via4, height: 400.nm)
+z(met5, height: 500.nm)
+
+</text>
+</klayout-macro>

tech/sky130/drc/README.md

@@ -0,0 +1,8 @@
+# Sky130 manufacturing rules deck
+
+The MR DRC deck was copied from [mpw_precheck](https://github.com/efabless/mpw_precheck/blob/main/checks/tech-files/sky130A_mr.drc). This is the DRC deck that is currently actively maintained.
+
+    > [!INFO]
+    > Make sure to keep this file updated.
+
+`sky130B_mr.drc` is the same as `sky130A_mr.drc`.