LVS on SramUnit with Calibre with blackboxing standard cells passes. Requires...

LVS on SramUnit with Calibre with blackboxing standard cells passes. Requires fixing body connection in tie cell.

SramUnit/design/cadence-innovus-signoff/configure.yml

@@ -22,6 +22,8 @@ outputs:
   - design-merged.gds
   - design.lvs.v
   - design.flatbuslvs.v
+  - design.nofillerlvs.v
+  - design.nofillerflatbuslvs.v
   - design.vcs.v
   - design.vcs.pg.v
   - design.lef
@@ -49,6 +51,8 @@ commands:
   - ln -sf ../results/*-merged.gds        design-merged.gds
   - ln -sf ../results/*.lvs.v             design.lvs.v
   - ln -sf ../results/*.flatbuslvs.v      design.flatbuslvs.v
+  - ln -sf ../results/*.nofillerlvs.v     design.nofillerlvs.v
+  - ln -sf ../results/*.nofillerflatbuslvs.v      design.nofillerflatbuslvs.v
   - ln -sf ../results/*.vcs.v             design.vcs.v
   - ln -sf ../results/*.vcs.pg.v          design.vcs.pg.v
   - ln -sf ../results/*.lef               design.lef

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

@@ -41,6 +41,19 @@ saveNetlist -excludeLeafCell                   \
             -phys                              \
             $vars(results_dir)/$vars(design).flatbuslvs.v
 
+saveNetlist -excludeLeafCell                   \
+            -flat                              \
+            -phys                              \
+            -excludeCellInst $lvs_exclude_list \
+            $vars(results_dir)/$vars(design).nofillerlvs.v
+
+saveNetlist -excludeLeafCell                   \
+            -flat                              \
+            -flattenBus                        \
+            -phys                              \
+            -excludeCellInst $lvs_exclude_list \
+            $vars(results_dir)/$vars(design).nofillerflatbuslvs.v
+
 
 # Write netlist for Virtuoso simulation
 #

SramUnit/design/construct.py

@@ -77,6 +77,7 @@ def construct():
   magic_drc       = Step( this_dir + '/open-magic-drc'                  )
   magic_def2spice = Step( this_dir + '/open-magic-def2spice'            )
   magic_gds2spice = Step( this_dir + '/open-magic-gds2spice'            )
+  magic_gds2spice_nobbox = Step( this_dir + '/open-magic-gds2spice-nobbox'            )
   netgen_lvs_def  = Step( this_dir + '/open-netgen-lvs-def-spice'       )
   netgen_lvs_def.set_name('netgen-lvs-def')
   
@@ -84,6 +85,7 @@ def construct():
   netgen_lvs_gds.set_name('netgen-lvs-gds')
 
   calibre_lvs     = Step( this_dir + '/mentor-calibre-comparison'       )
+  calibre_lvs_nobbox     = Step( this_dir + '/mentor-calibre-comparison-nobbox'       )
 
   # Default steps
 
@@ -150,8 +152,10 @@ def construct():
   g.add_step( magic_def2spice )
   g.add_step( netgen_lvs_def  )
   g.add_step( magic_gds2spice )
+  g.add_step( magic_gds2spice_nobbox )
   g.add_step( netgen_lvs_gds  )
   g.add_step( calibre_lvs     )
+  g.add_step( calibre_lvs_nobbox     )
 
   #-----------------------------------------------------------------------
   # Graph -- Add edges
@@ -170,6 +174,7 @@ def construct():
   netgen_lvs_def.extend_inputs(['sky130_sram_1kbyte_1rw1r_32x256_8.sp'])
   netgen_lvs_gds.extend_inputs(['sky130_sram_1kbyte_1rw1r_32x256_8.sp'])
   calibre_lvs.extend_inputs(['sky130_sram_1kbyte_1rw1r_32x256_8.sp'])
+  calibre_lvs_nobbox.extend_inputs(['sky130_sram_1kbyte_1rw1r_32x256_8.sp'])
   magic_drc.extend_inputs(['sky130_sram_1kbyte_1rw1r_32x256_8.lef'])
   
   for step in [iflow, init, power, place, cts, postcts_hold, route, postroute, signoff]:
@@ -195,9 +200,11 @@ def construct():
   g.connect_by_name( adk,             magic_drc       )
   g.connect_by_name( adk,             magic_def2spice )
   g.connect_by_name( adk,             magic_gds2spice )
+  g.connect_by_name( adk,             magic_gds2spice_nobbox )
   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,             calibre_lvs_nobbox     )
   g.connect_by_name( adk,             pt_timing       )
   g.connect_by_name( adk,             pt_power_rtl    )
   g.connect_by_name( adk,             pt_power_gl     )
@@ -228,6 +235,7 @@ def construct():
   g.connect_by_name( sram,            netgen_lvs_def  )
   g.connect_by_name( sram,            netgen_lvs_gds  )
   g.connect_by_name( sram,            calibre_lvs     )
+  g.connect_by_name( sram,            calibre_lvs_nobbox     )
   g.connect_by_name( sram,            magic_drc       )
 
   g.connect_by_name( rtl,             dc              )
@@ -276,10 +284,15 @@ def construct():
   g.connect_by_name( signoff,         netgen_lvs_gds  )
   g.connect_by_name( magic_gds2spice, netgen_lvs_gds  )
 
-  # LVS comparision using Calibre
+  # LVS comparision using Calibre with standard cells blackboxed
   g.connect_by_name( signoff,         calibre_lvs     )
   g.connect_by_name( magic_gds2spice, calibre_lvs     )
 
+  # LVS comparision using Calibre without standard cells blackboxed
+  g.connect_by_name( gdsmerge,        magic_gds2spice_nobbox )
+  g.connect_by_name( signoff,         calibre_lvs_nobbox     )
+  g.connect_by_name( magic_gds2spice_nobbox, calibre_lvs_nobbox     )
+
   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

SramUnit/design/mentor-calibre-comparison-nobbox/calibre_lvs.rule.template

+LAYOUT PATH "./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_*"
+LVS BOX "sky130_sram*"
+LVS BOX "sky130_fd_pr*"
+
+LVS DEVICE TYPE NMOS sky130_fd_pr__nfet_01v8
+LVS DEVICE TYPE NMOS sky130_fd_pr__nfet_01v8_hvt
+LVS DEVICE TYPE PMOS sky130_fd_pr__pfet_01v8 
+LVS DEVICE TYPE PMOS sky130_fd_pr__pfet_01v8_hvt 
+LVS DEVICE TYPE RESISTOR sky130_fd_pr__res_generic_po
+
+// 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

SramUnit/design/mentor-calibre-comparison-nobbox/configure.yml

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

SramUnit/design/mentor-calibre-comparison-nobbox/run_lvs.sh

+envsubst < calibre_lvs.rule.template > calibre_lvs.rule
+v2lvs -i -lsp inputs/adk/stdcells.spi -s inputs/adk/stdcells.spi -lsp inputs/*.sp -s inputs/*.sp -lsp source.added -s source.added -v inputs/design.nofillerflatbuslvs.v -o design.lvs.v.spice
+
+v2lvs -i -lsp inputs/design_extracted.spice -s inputs/design_extracted.spice -lsp source.added -s source.added -o design.extracted.spice
+
+calibre -lvs -hier ./calibre_lvs.rule -hcell hcells -automatch

SramUnit/design/mentor-calibre-comparison-nobbox/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
+

SramUnit/design/open-magic-gds2spice-nobbox/configure.yml

+#=========================================================================
+# Extract spice from GDS using magic
+#=========================================================================
+# Author : Kartik Prabhu
+# Date   : May 21, 2021
+#
+
+name: open-magic-gds2spice-nobbox
+
+#-------------------------------------------------------------------------
+# Inputs and Outputs
+#-------------------------------------------------------------------------
+inputs:
+  - adk
+  - design_merged.gds
+  - sky130_sram_1kbyte_1rw1r_32x256_8.lef
+
+outputs:
+  - design_extracted.spice
+
+#-------------------------------------------------------------------------
+# Parameters
+#-------------------------------------------------------------------------
+
+parameters:
+  design_name: undefined
+
+commands:
+  - cp inputs/adk/magicrc .magicrc
+  - magic -noconsole -dnull extract.tcl | tee gds2spice.log
+  - mv {design_name}.spice outputs/design_extracted.spice

SramUnit/design/open-magic-gds2spice-nobbox/extract.tcl

+cif istyle sky130(vendor)
+lef read inputs/sky130_sram_1kbyte_1rw1r_32x256_8.lef
+
+gds noduplicates true
+gds order true
+
+gds flatten true
+gds read ./inputs/design_merged.gds
+load $::env(design_name)
+select top cell
+extract no all
+extract do local
+extract unique
+extract
+ext2spice lvs
+ext2spice $::env(design_name).ext
+exit