LVS comparison with Calibre

GcdUnit/design/cadence-innovus-signoff/scripts/generate-results.tcl

@@ -30,10 +30,11 @@ foreach x $ADK_LVS_EXCLUDE_CELL_LIST {
   append lvs_exclude_list [dbGet -u -e top.insts.cell.name $x] " "
 }
 
+# Typically we would exclude cells, but we are not in this case,
+# since Magic creates abstract views for all cells (incl. filler)
 saveNetlist -excludeLeafCell                   \
             -flat                             \
            -phys                              \
-           -excludeCellInst $lvs_exclude_list \
            $vars(results_dir)/$vars(design).lvs.v
 
 # saveNetlist -excludeLeafCell                   \

GcdUnit/design/construct.py

@@ -75,6 +75,7 @@ def construct():
   magic_gds2spice = Step( this_dir + '/open-magic-gds2spice'            )
   netgen_lvs      = Step( this_dir + '/open-netgen-lvs'                 )
   magic_antenna   = Step( this_dir + '/open-magic-antenna'              )
+  calibre_lvs     = Step( this_dir + '/mentor-calibre-comparison'       )
 
 
   # Default steps
@@ -148,6 +149,7 @@ def construct():
   g.add_step( netgen_lvs_def  )
   g.add_step( magic_gds2spice )
   g.add_step( netgen_lvs_gds  )
+  g.add_step( calibre_lvs     )
 
   #-----------------------------------------------------------------------
   # Graph -- Add edges
@@ -179,6 +181,7 @@ def construct():
   g.connect_by_name( adk,             magic_gds2spice )
   g.connect_by_name( adk,             netgen_lvs_def  )
   g.connect_by_name( adk,             netgen_lvs_gds  )
+  g.connect_by_name( adk,             calibre_lvs     )
   g.connect_by_name( adk,             pt_timing       )
   g.connect_by_name( adk,             pt_power_rtl    )
   g.connect_by_name( adk,             pt_power_gl     )
@@ -232,6 +235,10 @@ def construct():
   g.connect_by_name( signoff,         netgen_lvs_gds  )
   g.connect_by_name( magic_gds2spice, netgen_lvs_gds  )
 
+  # LVS comparision using Calibre
+  g.connect_by_name( signoff,         calibre_lvs     )
+  g.connect_by_name( magic_gds2spice, calibre_lvs     )
+
   g.connect_by_name( signoff,         pt_timing       )
   g.connect_by_name( signoff,         pt_power_rtl    )
   g.connect_by_name( gen_saif_rtl,    pt_power_rtl    ) # run.saif

GcdUnit/design/mentor-calibre-comparison/calibre_lvs.rule.template

+LAYOUT PATH "./inputs/design_extracted.spice"
+LAYOUT PRIMARY "${design_name}"
+LAYOUT SYSTEM SPICE
+
+SOURCE PATH "./design.lvs.v.spice"
+SOURCE PRIMARY "${design_name}"
+SOURCE SYSTEM SPICE
+
+MASK SVDB DIRECTORY "svdb" QUERY
+
+LVS REPORT "outputs/lvs.report"
+
+LVS ISOLATE SHORTS YES
+LVS REPORT OPTION S
+
+// Case sensitive
+LAYOUT CASE YES
+SOURCE CASE YES
+
+// Black box all std cells if Magic is also black boxing
+LVS BOX "sky130_*"
+
+// Very important! Magic uses slashes as part of the name 
+LVS SPICE SLASH IS SPACE               NO
+
+LVS SPICE PREFER PINS YES
+LVS ABORT ON SUPPLY ERROR NO
+LVS RECOGNIZE GATES NONE
+LVS IGNORE PORTS NO
+LVS CHECK PORT NAMES YES
+
+
+LVS ABORT ON SOFTCHK NO
+LVS SHOW SEED PROMOTIONS NO
+LVS SHOW SEED PROMOTIONS MAXIMUM 50
+
+LVS POWER NAME "VDD" "VPWR"
+LVS GROUND NAME "VSS" "VGND"
+LVS SPICE OVERRIDE GLOBALS             YES
+LVS GLOBALS ARE PORTS                  NO
+
+
+VIRTUAL CONNECT COLON YES
+VIRTUAL CONNECT REPORT NO
+
+LVS EXECUTE ERC YES
+ERC RESULTS DATABASE "erc.results"
+ERC SUMMARY REPORT "erc.summary" REPLACE HIER
+ERC CELL NAME YES CELL SPACE XFORM
+ERC MAXIMUM RESULTS 1000
+ERC MAXIMUM VERTEX 4096

GcdUnit/design/mentor-calibre-comparison/configure.yml

+#=========================================================================
+# Comparison of netlists using Calibre
+#=========================================================================
+# Author : Kartik Prabhu
+# Date   : June 13, 2021
+#
+
+name: mentor-calibre-comparison
+
+#-------------------------------------------------------------------------
+# Inputs and Outputs
+#-------------------------------------------------------------------------
+inputs:
+  - adk
+  - design_extracted.spice
+  - design.lvs.v
+
+outputs:
+  - lvs.report
+
+#-------------------------------------------------------------------------
+# Parameters
+#-------------------------------------------------------------------------
+
+parameters:
+  design_name: undefined
+
+commands: 
+  - sh run_lvs.sh
+
+debug:
+  - calibre -rve -lvs svdb
+

GcdUnit/design/mentor-calibre-comparison/run_lvs.sh

+envsubst < calibre_lvs.rule.template > calibre_lvs.rule
+v2lvs -i -lsp inputs/adk/stdcells.spi -s inputs/adk/stdcells.spi -lsp source.added -s source.added -v inputs/design.lvs.v -o design.lvs.v.spice
+calibre -lvs -hier ./calibre_lvs.rule -hcell hcells -automatch
\ No newline at end of file

GcdUnit/design/mentor-calibre-comparison/source.added

+.subckt sky130_fd_pr__pfet_01v8 d g s b
+.ends
+
+.subckt sky130_fd_pr__pfet_01v8_hvt d g s b
+.ends
+
+.subckt sky130_fd_pr__nfet_01v8 d g s b
+.ends
+
+.subckt sky130_fd_pr__nfet_01v8_hvt d g s b
+.ends
\ No newline at end of file