Merge pull request #109 from siliconcompiler/interposer

interposer pdk
siliconcompiler · Nov 1, 2024 · 07fba47 · 07fba47
2 parents 4a29f3a + 12abfa8
commit 07fba47
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diff --git a/README.md b/README.md
@@ -12,6 +12,7 @@ Supported PDKs:
 * [Skywater130](lambdapdk/sky130/base/README.md)
 * [Global Foundries 180](lambdapdk/gf180/README.md)
 * [IHP 180](https://github.com/IHP-GmbH/IHP-Open-PDK)
+* [interposer](lambdapdk/interposer/README.md)
 
 # License
 

diff --git a/lambdapdk/__init__.py b/lambdapdk/__init__.py
@@ -20,10 +20,10 @@ def get_pdks():
     Returns a list of pdk names in lambdapdk
     '''
 
-    from lambdapdk import asap7, freepdk45, sky130, gf180, ihp130
+    from lambdapdk import asap7, freepdk45, sky130, gf180, ihp130, interposer
 
     all_pdks = []
-    for pdk_mod in [asap7, freepdk45, sky130, gf180, ihp130]:
+    for pdk_mod in [asap7, freepdk45, sky130, gf180, ihp130, interposer]:
         pdks = pdk_mod.setup()
         if not isinstance(pdks, (list, tuple)):
             pdks = [pdks]
@@ -43,14 +43,16 @@ def get_libs():
     from lambdapdk.sky130.libs import sky130sc, sky130io, sky130sram
     from lambdapdk.gf180.libs import gf180mcu, gf180io, gf180sram
     from lambdapdk.ihp130.libs import sg13g2_stdcell, sg13g2_sram
+    from lambdapdk.interposer.libs import bumps as interposer_bumps
 
     all_libs = []
     for lib_mod in [
             asap7sc7p5t, fakeram7, fakeio7,
             nangate45, fakeram45,
             sky130sc, sky130io, sky130sram,
             gf180mcu, gf180io, gf180sram,
-            sg13g2_stdcell, sg13g2_sram]:
+            sg13g2_stdcell, sg13g2_sram,
+            interposer_bumps]:
         libs = lib_mod.setup()
         if not isinstance(libs, (list, tuple)):
             libs = [libs]

diff --git a/lambdapdk/ihp130/libs/sg13g2_sram.py b/lambdapdk/ihp130/libs/sg13g2_sram.py
@@ -15,7 +15,7 @@ def setup():
         path_base = 'ihp-sg13g2/libs.ref/sg13g2_sram'
         lib.add('output', stackup, 'lef', f'{path_base}/lef/{mem_name}.lef')
         lib.add('output', stackup, 'gds', f'{path_base}/gds/{mem_name}.gds')
-        lib.add('output', stackup, 'cdl', f'{path_base}/spice/{mem_name}.cdl')
+        lib.add('output', stackup, 'cdl', f'{path_base}/cdl/{mem_name}.cdl')
 
         lib.add('output', 'typ', 'nldm', f'{path_base}/lib/{mem_name}_typ_1p20V_25C.lib')
         lib.add('output', 'slow', 'nldm', f'{path_base}/lib/{mem_name}_slow_1p08V_125C.lib')

diff --git a/lambdapdk/interposer/README.md b/lambdapdk/interposer/README.md
@@ -0,0 +1,198 @@
+# Interposer
+
+
+The interposer PDK is a passive technology with a number of
+simulated stackups. The PDK contains enablement for place and
+route tools and design rule signoff.
+Note that this process design kit is provided as an academic
+and research aid only and the resulting designs are not manufacturable.
+
+
+
+## Stackups
+### 3ML_0400
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal2             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal1             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+```
+
+### 4ML_0400
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal3             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal2             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal1             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+```
+
+### 5ML_0400
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal4             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal3             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal2             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal1             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+```
+
+### 3ML_0800
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal2             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal1             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+```
+
+### 4ML_0800
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal3             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal2             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal1             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+```
+
+### 5ML_0800
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal4             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal3             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal2             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal1             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+```
+
+### 3ML_2000
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal2             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal1             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+```
+
+### 4ML_2000
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal3             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal2             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal1             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+```
+
+### 5ML_2000
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal4             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal3             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal2             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal1             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+```
+
+### 3ML_0400_2000
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal2             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal1             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+```
+
+### 4ML_0400_2000
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal3             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal2             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal1             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+```
+
+### 5ML_0400_2000
+```
+          metal name           |  width  | spacing
+------------------------------ | ------- | -------
+           topmetal            |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal4             |  2000nm |  2000nm
+------------------------------ | ------- | -------
+            metal3             |  800nm  |  800nm 
+------------------------------ | ------- | -------
+            metal2             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+            metal1             |  400nm  |  400nm 
+------------------------------ | ------- | -------
+```
+
+
+## License
+```
+Copyright 2024 ZeroASIC Corp
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     https://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+```
diff --git a/lambdapdk/interposer/__init__.py b/lambdapdk/interposer/__init__.py
@@ -0,0 +1,111 @@
+import os
+import siliconcompiler
+from lambdapdk import register_data_source
+
+
+stackups = []
+for m in ("3ML", "4ML", "5ML"):
+    for w in ("0400", "0800", "2000", "0400_2000"):
+        stackups.append(f'{m}_{w}')
+
+
+####################################################
+# PDK Setup
+####################################################
+def setup():
+    '''
+    The interposer PDK is a passive technology with a number of
+    simulated stackups. The PDK contains enablement for place and
+    route tools and design rule signoff.
+    Note that this process design kit is provided as an academic
+    and research aid only and the resulting designs are not manufacturable.
+    '''
+
+    foundry = 'virtual'
+    process = 'interposer'
+
+    libtype = 'none'
+
+    node = 130
+    # TODO: dummy numbers, only matter for cost estimation
+    wafersize = 300
+    hscribe = 0.1
+    vscribe = 0.1
+    edgemargin = 2
+
+    pdkdir = os.path.join('lambdapdk', 'interposer', 'base')
+
+    pdk = siliconcompiler.PDK(process, package='lambdapdk')
+    register_data_source(pdk)
+
+    # process name
+    pdk.set('pdk', process, 'foundry', foundry)
+    pdk.set('pdk', process, 'node', node)
+    pdk.set('pdk', process, 'version', 'v0.0.1')
+    pdk.set('pdk', process, 'stackup', stackups)
+    pdk.set('pdk', process, 'wafersize', wafersize)
+    pdk.set('pdk', process, 'edgemargin', edgemargin)
+    pdk.set('pdk', process, 'scribe', (hscribe, vscribe))
+
+    # APR Setup
+    for stackup in stackups:
+        for tool in ('openroad', 'klayout', 'magic'):
+            pdk.set('pdk', process, 'aprtech', tool, stackup, libtype, 'lef',
+                    pdkdir + f'/apr/{stackup}.lef')
+
+        pdk.set('pdk', process, 'minlayer', stackup, 'metal1')
+        pdk.set('pdk', process, 'maxlayer', stackup, 'topmetal')
+
+        # DRC Runsets
+        pdk.set('pdk', process, 'drc', 'runset', 'klayout', stackup, 'drc',
+                pdkdir + f'/setup/klayout/{stackup}.drc')
+
+        key = 'drc_params:drc'
+        pdk.add('pdk', process, 'var', 'klayout', stackup, key, 'input=<input>')
+        pdk.add('pdk', process, 'var', 'klayout', stackup, key, 'topcell=<topcell>')
+        pdk.add('pdk', process, 'var', 'klayout', stackup, key, 'report=<report>')
+        pdk.add('pdk', process, 'var', 'klayout', stackup, key, 'threads=<threads>')
+
+        # Layer map and display file
+        pdk.set('pdk', process, 'layermap', 'klayout', 'def', 'gds', stackup,
+                pdkdir + f'/apr/{stackup}.layermap')
+        pdk.set('pdk', process, 'display', 'klayout', stackup,
+                pdkdir + f'/setup/klayout/{stackup}.lyp')
+
+        pdk.set('pdk', process, 'aprtech', 'openroad', stackup, libtype, 'fill',
+                pdkdir + f'/dfm/openroad/{stackup}.fill.json')
+
+        # Openroad global routing grid derating
+        openroad_layer_adjustments = {
+            'metal1': 0.20,
+            'metal2': 0.20,
+            'metal3': 0.20,
+            'metal4': 0.20,
+            'metal5': 0.20,
+            'metal6': 0.20,
+            'topmetal': 0.20
+        }
+        for layer, adj in openroad_layer_adjustments.items():
+            if layer != 'topmetal' and int(layer[-1]) >= int(stackup[0]):
+                continue
+            pdk.set('pdk', process, 'var', 'openroad', f'{layer}_adjustment', stackup, adj)
+
+        pdk.set('pdk', process, 'var', 'openroad', 'rclayer_signal', stackup, 'metal2')
+        pdk.set('pdk', process, 'var', 'openroad', 'rclayer_clock', stackup, 'metal2')
+
+        pdk.set('pdk', process, 'var', 'openroad', 'pin_layer_vertical', stackup, 'metal2')
+        pdk.set('pdk', process, 'var', 'openroad', 'pin_layer_horizontal', stackup, 'metal3')
+
+        # PEX
+        for corner in ["minimum", "typical", "maximum"]:
+            pdk.set('pdk', process, 'pexmodel', 'openroad', stackup, corner,
+                    pdkdir + '/pex/openroad/' + stackup + '.' + corner + '.tcl')
+
+    return pdk
+
+
+#########################
+if __name__ == "__main__":
+    pdk = setup()
+    pdk.write_manifest(f'{pdk.top()}.json')
+    pdk.check_filepaths()