Merge pull request #118 from siliconcompiler/tbuf-mapping

add tbuf mapping for yosys

Author: gadfort

lambdapdk/freepdk45/libs/nangate45.py

@@ -73,6 +73,7 @@ def setup():
     # Techmap
     lib.add('option', 'file', 'yosys_techmap', libdir + '/techmap/yosys/cells_latch.v')
     lib.add('option', 'file', 'yosys_addermap', libdir + '/techmap/yosys/cells_adders.v')
+    lib.add('option', 'file', 'yosys_tbufmap', libdir + '/techmap/yosys/cells_tristatebuf.v')
 
     # Defaults for OpenROAD tool variables
     lib.set('option', 'var', 'openroad_place_density', '0.50')

lambdapdk/freepdk45/libs/nangate45/techmap/yosys/cells_tristatebuf.v

@@ -0,0 +1,6 @@
+module \$_TBUF_ (input A, input E, output Y);
+  TBUF_X1 _TECHMAP_REPLACE_ (
+    .A(A),
+    .Z(Y),
+    .EN(E));
+endmodule

lambdapdk/gf180/libs/gf180mcu.py

@@ -99,6 +99,7 @@ def setup():
         # Yosys techmap
         lib.add('option', 'file', 'yosys_techmap', libdir + '/techmap/yosys/cells_latch.v')
         lib.add('option', 'file', 'yosys_addermap', libdir + '/techmap/yosys/cells_adders.v')
+        lib.add('option', 'file', 'yosys_tbufmap', libdir + '/techmap/yosys/cells_tristatebuf.v')
 
         # Openroad specific files
         lib.set('option', 'file', 'openroad_pdngen',

lambdapdk/gf180/libs/gf180mcu_fd_sc_mcu7t5v0/techmap/yosys/cells_tristatebuf.v

@@ -0,0 +1,6 @@
+module \$_TBUF_ (input A, input E, output Y);
+  gf180mcu_fd_sc_mcu7t5v0__bufz_1 _TECHMAP_REPLACE_ (
+    .I(A),
+    .Z(Y),
+    .EN(E));
+endmodule

lambdapdk/gf180/libs/gf180mcu_fd_sc_mcu9t5v0/techmap/yosys/cells_tristatebuf.v

@@ -0,0 +1,6 @@
+module \$_TBUF_ (input A, input E, output Y);
+  gf180mcu_fd_sc_mcu9t5v0__bufz_1 _TECHMAP_REPLACE_ (
+    .I(A),
+    .Z(Y),
+    .EN(E));
+endmodule

lambdapdk/ihp130/libs/sg13g2_stdcell.py

@@ -92,6 +92,9 @@ def setup():
     lib.add('option', 'file', 'yosys_techmap',
             libdir + '/techmap/yosys/cells_latch.v',
             package='lambdapdk')
+    lib.add('option', 'file', 'yosys_tbufmap',
+            libdir + '/techmap/yosys/cells_tristatebuf.v',
+            package='lambdapdk')
 
     # Defaults for OpenROAD tool variables
     lib.set('option', 'var', 'openroad_place_density', '0.65')

lambdapdk/ihp130/libs/sg13g2_stdcell/techmap/yosys/cells_tristatebuf.v

@@ -0,0 +1,6 @@
+module \$_TBUF_ (input A, input E, output Y);
+  sg13g2_ebufn_2 _TECHMAP_REPLACE_ (
+    .A(A),
+    .Z(Y),
+    .TE_B(~E));
+endmodule

lambdapdk/sky130/libs/sky130hd/techmap/yosys/cells_tristatebuf.v

@@ -0,0 +1,6 @@
+module \$_TBUF_ (input A, input E, output Y);
+  sky130_fd_sc_hd__ebufn_1 _TECHMAP_REPLACE_ (
+    .A(A),
+    .Z(Y),
+    .TE_B(~E));
+endmodule

lambdapdk/sky130/libs/sky130hdll/techmap/yosys/cells_tristatebuf.v

@@ -0,0 +1,6 @@
+module \$_TBUF_ (input A, input E, output Y);
+  sky130_fd_sc_hdll__ebufn_1 _TECHMAP_REPLACE_ (
+    .A(A),
+    .Z(Y),
+    .TE_B(~E));
+endmodule

lambdapdk/sky130/libs/sky130sc.py

@@ -150,6 +150,7 @@ def setup():
         # Yosys techmap
         # TODO: separate this out properly for the different libraries
         lib.add('option', 'file', 'yosys_techmap', libdir + '/techmap/yosys/cells_latch.v')
+        lib.add('option', 'file', 'yosys_tbufmap', libdir + '/techmap/yosys/cells_tristatebuf.v')
         if libtype == "hd":
             lib.add('option', 'file', 'yosys_addermap', libdir + '/techmap/yosys/cells_adders.v')