Merge branch 'dev' into sky130_custom_modules

Makefile

@@ -49,8 +49,8 @@ INSTALL_BASE_DIRS := gds_lib mag_lib sp_lib lvs_lib calibre_lvs_lib klayout_lvs_
 INSTALL_BASE := $(OPENRAM_HOME)/../technology/sky130
 INSTALL_DIRS := $(addprefix $(INSTALL_BASE)/,$(INSTALL_BASE_DIRS))
 
-# Remove this if you don't want to use conda
+# If conda is installed, we will use Magic from there
-USE_CONDA ?= 1
+CONDA_DIR := $(wildcard $(TOP_DIR)/miniconda)
 
 check-pdk-root:
 ifndef PDK_ROOT
@@ -72,7 +72,14 @@ $(OPEN_PDKS_DIR): $(SKY130_PDKS_DIR)
 
 $(SKY130_PDK): $(OPEN_PDKS_DIR) $(SKY130_PDKS_DIR)
 	@echo "Installing open_pdks..."
-ifdef USE_CONDA
+ifeq ($(CONDA_DIR),"")
+	@cd $(PDK_ROOT)/open_pdks && \
+		./configure --enable-sky130-pdk=$(PDK_ROOT)/skywater-pdk/libraries --with-sky130-local-path=$(PDK_ROOT) && \
+		cd sky130 && \
+		make veryclean && \
+		make && \
+		make SHARED_PDKS_PATH=$(PDK_ROOT) install
+else
 	@source $(TOP_DIR)/miniconda/bin/activate && \
 		cd $(PDK_ROOT)/open_pdks && \
 		./configure --enable-sky130-pdk=$(PDK_ROOT)/skywater-pdk/libraries --with-sky130-local-path=$(PDK_ROOT) && \
@@ -81,13 +88,6 @@ ifdef USE_CONDA
 		make && \
 		make SHARED_PDKS_PATH=$(PDK_ROOT) install && \
 		conda deactivate
-else
-	@cd $(PDK_ROOT)/open_pdks && \
-		./configure --enable-sky130-pdk=$(PDK_ROOT)/skywater-pdk/libraries --with-sky130-local-path=$(PDK_ROOT) && \
-		cd sky130 && \
-		make veryclean && \
-		make && \
-		make SHARED_PDKS_PATH=$(PDK_ROOT) install
 endif
 
 $(SRAM_LIB_DIR): check-pdk-root

PORTING.md

@@ -6,19 +6,24 @@ If you want to support a new technology, you will need to create:
 
 We provide two technology examples for [SCMOS] and [FreePDK45]. Each
 specific technology (e.g., [FreePDK45]) should be a subdirectory
-(e.g., $OPENRAM_TECH/freepdk45) and include certain folders and files:
+(e.g., `$OPENRAM_TECH/freepdk45`) and include certain folders and files:
-* gds_lib folder with all the .gds (premade) library cells:
+* `gds_lib` folder with all the `.gds` (premade) library cells:
-  * dff.gds
+  * `dff.gds`
-  * sense_amp.gds
+  * `sense_amp.gds`
-  * write_driver.gds
+  * `write_driver.gds`
-  * cell_1rw.gds
+  * `cell_1rw.gds`
-  * replica\_cell\_1rw.gds
+  * `replica\_cell\_1rw.gds`
-  * dummy\_cell\_1rw.gds
+  * `dummy\_cell\_1rw.gds`
-* sp_lib folder with all the .sp (premade) library netlists for the above cells.
+* `sp_lib` folder with all the `.sp` (premade) library netlists for the above cells.
-* layers.map
+* `layers.map`
-* A valid tech Python module (tech directory with \_\_init\_\_.py and tech.py) with:
+* A valid tech Python module (tech directory with `__init__.py` and `tech.py`) with:
   * References in tech.py to spice models
   * DRC/LVS rules needed for dynamic cells and routing
   * Layer information
   * Spice and supply information
   * etc.
+
+
+
+[FreePDK45]: https://www.eda.ncsu.edu/wiki/FreePDK45:Contents
+[SCMOS]:     https://www.mosis.com/files/scmos/scmos.pdf

VERSION

@@ -1 +1 @@
-1.2.10
+1.2.11

__init__.py

@@ -60,26 +60,26 @@ class custom_module_finder(MetaPathFinder):
         # Skip if the package is not openram
         if package_name != "openram":
             return None
-        customizable = False
         # Search for the module name in customizable modules
         from openram import OPTS
         for k, v in OPTS.__dict__.items():
             if module_name == v:
-                customizable = True
+                break
+        else:
+            return None
         # Search for the custom module
-        if customizable:
+        import sys
-            import sys
+        # Try to find the module in sys.path
-            # Try to find the module in sys.path
+        for path in sys.path:
-            for path in sys.path:
+            # Skip this path if not directory
-                # Skip this path if not directory
+            if not os.path.isdir(path):
-                if not os.path.isdir(path):
+                continue
-                    continue
+            for file in os.listdir(path):
-                for file in os.listdir(path):
+                # If there is a script matching the custom module name,
-                    # If there is a script matching the custom module name,
+                # import it with the default module name
-                    # import it with the default module name
+                if file == (module_name + ".py"):
-                    if file == (module_name + ".py"):
+                    from importlib.util import spec_from_file_location
-                        from importlib.util import spec_from_file_location
+                    return spec_from_file_location(module_name, "{0}/{1}.py".format(path, module_name))
-                        return spec_from_file_location(module_name, "{0}/{1}.py".format(path, module_name))
         return None
 # Python calls meta path finders and asks them to handle the module import if
 # they can

install_conda.sh

@@ -26,6 +26,10 @@ then
         conda install -q -y -c vlsida-eda ${tool}
     done
 
+    # Install required Python packages
+    # (This step isn't required but used to prevent possible issues)
+    pip3 install -r requirements.txt
+
     conda deactivate
 fi