Fix PDN Config (#188)

~ Configure PDN as a macro
~ Update OpenLane 2 to Beta 14
~ Fix bug where `odbpy` returns a goddamn pointer to an int64

.github/workflows/main.yml

@@ -94,7 +94,7 @@ jobs:
       - name: Setup Nix
         uses: cachix/install-nix-action@v22
         with:
-          nix_path: nixpkgs=channel:nixos-22.11
+          nix_path: nixpkgs=channel:nixos-23.05
       - name: Setup Cachix
         uses: cachix/cachix-action@v12
         with:
@@ -106,7 +106,7 @@ jobs:
             building_blocks=rf
           fi
 
-          nix-shell --run "\
+          nix-shell --pure --run "\
             ./dffram.py ${{ matrix.count }}x${{ matrix.width }}\
             -p sky130A\
             -s sky130_fd_sc_hd\
@@ -115,6 +115,12 @@ jobs:
           "
 
           echo "PRODUCTS_PATH=$(echo products/*)" >> $GITHUB_ENV
+      # - name: Upload Build Folder [TEMP]
+      #   uses: actions/upload-artifact@v3
+      #   if: always()
+      #   with:
+      #     name: BUILD_${{ matrix.count }}x${{ matrix.width }}_${{ matrix.variant }}
+      #     path: ./build
       - name: Upload Final Views
         uses: actions/upload-artifact@v3
         with:

Makefile

@@ -10,14 +10,13 @@ lint: venv/manifest.txt
 	./venv/bin/flake8 .
 
 venv: venv/manifest.txt
-venv/manifest.txt: ./requirements_dev.txt ./requirements.txt
+venv/manifest.txt: ./requirements_dev.txt
 	rm -rf venv
 	python3 -m venv ./venv
 	PYTHONPATH= ./venv/bin/python3 -m pip install --upgrade pip
 	PYTHONPATH= ./venv/bin/python3 -m pip install --upgrade wheel
 	PYTHONPATH= ./venv/bin/python3 -m pip install --upgrade\
-		-r ./requirements_dev.txt\
-		-r ./requirements.txt
+		-r ./requirements_dev.txt
 	PYTHONPATH= ./venv/bin/python3 -m pip freeze > $@
 	touch venv/manifest.txt
 

dffram.py

@@ -352,9 +352,10 @@ def main(
             "FP_IO_VEXTEND": Decimal(0),
             "FP_IO_VLENGTH": 2,
             "FP_IO_HLENGTH": 2,
-            "STA_CORNERS": ["nom_ss_100C_1v60"],
+            # PDN
+            "DESIGN_IS_CORE": False,
         },
-        design_dir=build_dir,
+        design_dir=os.path.abspath(build_dir),
     )
 
     final_state = dffram_flow.start(

placeram/cli.py

@@ -183,9 +183,9 @@ def place(self):
         utl.metric_float("dffram__suggested__core_width", self.core_width)
         utl.metric_float("dffram__suggested__core_height", self.core_height)
 
-        die_area = self.block.getDieArea().area() / (
-            self.micron_in_units * self.micron_in_units
-        )
+        die_width = self.block.getDieArea().dx() / self.micron_in_units
+        die_height = self.block.getDieArea().dy() / self.micron_in_units
+        die_area = die_width * die_height
 
         self.density = logical_area / die_area
         utl.metric_float("dffram__logic__density", self.density)
@@ -239,8 +239,8 @@ def cli(
     odb_in,
 ):
     pdk, scl, blocks = building_blocks.split(":")
-    fill_cells_file = os.path.join(".", "platforms", pdk, "fill_cells.yml")
-    if not os.path.isfile(fill_cells_file):
+    platform_tech_file = os.path.join(".", "platforms", pdk, scl, "tech.yml")
+    if not os.path.isfile(platform_tech_file):
         eprint("Platform %s not found." % pdk)
         exit(os.EX_NOINPUT)
 
@@ -264,15 +264,14 @@ def cli(
             "WARNING: Word length must be a non-zero multiple of 8. Results may be unexpected."
         )
 
-    platform_tech_file = os.path.join(".", "platforms", pdk, scl, "tech.yml")
     platform_tech_config = yaml.safe_load(open(platform_tech_file))
 
     tap_distance = platform_tech_config["tap_distance"]
 
     for input in [odb_in]:
         check_readable(input)
 
-    fill_cell_data = yaml.load(open(fill_cells_file).read(), Loader=yaml.SafeLoader)
+    fill_cell_data = platform_tech_config["fills"]
 
     placer = Placer(
         odb_in,

platforms/sky130A/sky130_fd_sc_hd/tech.yml

@@ -1,17 +1,17 @@
 tap_distance: 15
-metal_layers: 
+metal_layers:
   hor-layer: met3
   ver-layer: met2
   rt-max-layer: met4
 site:
   width: 0.46
   height: 2.72
   name: unithd
-tie: 
+tie:
   tie_lo_cell: sky130_fd_sc_hd__conb_1
   tie_lo_port: LO
   tie_hi_cell: sky130_fd_sc_hd__conb_1
-  tie_hi_port: HI  
+  tie_hi_port: HI
 sta:
   driving_cell:
     name: sky130_fd_sc_hd__inv_8
@@ -30,3 +30,8 @@ sta:
       "1024x*": 16.5
       "2048x*": 16.5
     rf: {}
+fills:
+  decap: sky130_fd_sc_hd__decap_(\d+)
+  fill: sky130_fd_sc_hd__fill_(\d+)
+  tap: sky130_fd_sc_hd__tapvpwrvgnd_(\d+)
+  diode: sky130_fd_sc_hd__diode_(\d+)

requirements.txt

@@ -1,3 +1,3 @@
-openlane==2.0.0b3
+openlane==2.0.0b14
 pyyaml
 cloup

shell.nix

@@ -18,6 +18,8 @@
 let openlane-src = pkgs.fetchFromGitHub {
     owner = "efabless";
     repo = "openlane2";
-    rev = "0b2cb7eb6681b644e65082701175044e6e97cc0f";
-    sha256 = "sha256-qYMZJGRfqNhf0FFf2VdF2AOsAqVTlWLrYlc3krvKp0I=";
-}; in import "${openlane-src}/shell.nix" {}
+    rev = "0c05b7ea04eac74203a9a33f8a8b519f33220f2f";
+    sha256 = "sha256-fjYz6HuIYrGbkb1oA6wPIlEjieYU5hu0aygYQFj2d2I=";
+}; in import "${openlane-src}/shell.nix" {
+    inherit pkgs;
+}