qspim cleanup
diff --git a/verilog/rtl/lib/clk_skew_adjust.gv b/verilog/rtl/lib/clk_skew_adjust.gv
new file mode 100644
index 0000000..fc811c0
--- /dev/null
+++ b/verilog/rtl/lib/clk_skew_adjust.gv
@@ -0,0 +1,205 @@
+//////////////////////////////////////////////////////////////////////////////
+// SPDX-FileCopyrightText: 2021 , Dinesh Annayya
+//
+// 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
+//
+// http://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.
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileContributor: Created by Dinesh Annayya <dinesha@opencores.org>
+//
+//////////////////////////////////////////////////////////////////////
+//// ////
+//// clock skew adjust ////
+//// ////
+//// This file is part of the YIFive cores project ////
+//// https://github.com/dineshannayya/yifive_r0.git ////
+//// http://www.opencores.org/cores/yifive/ ////
+//// ////
+//// Description ////
+//// This block is useful for global clock skew adjustment ////
+//// logic implementation: ////
+//// clk_out = (sel=0) ? clk_in : ////
+//// (sel=1) ? clk_d1 : ////
+//// (sel=1) ? clk_d2 : ////
+//// ..... ////
+//// (sel=15)? clk_d15 :clk_in ////
+//// ////
+//// Note: each d* indicate clk buf delay ////
+//// ////
+//// ////
+//// To Do: ////
+//// nothing ////
+//// ////
+//// Author(s): ////
+//// - Dinesh Annayya, dinesha@opencores.org ////
+//// ////
+//// Revision : ////
+//// 0.0 - 29th Feb 2021, Dinesh A ////
+//// Initial version ////
+///
+//// ////
+//////////////////////////////////////////////////////////////////////
+//// ////
+//// Copyright (C) 2000 Authors and OPENCORES.ORG ////
+//// ////
+//// This source file may be used and distributed without ////
+//// restriction provided that this copyright statement is not ////
+//// removed from the file and that any derivative work contains ////
+//// the original copyright notice and the associated disclaimer. ////
+//// ////
+//// This source file is free software; you can redistribute it ////
+//// and/or modify it under the terms of the GNU Lesser General ////
+//// Public License as published by the Free Software Foundation; ////
+//// either version 2.1 of the License, or (at your option) any ////
+//// later version. ////
+//// ////
+//// This source is distributed in the hope that it will be ////
+//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
+//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
+//// PURPOSE. See the GNU Lesser General Public License for more ////
+//// details. ////
+//// ////
+//// You should have received a copy of the GNU Lesser General ////
+//// Public License along with this source; if not, download it ////
+//// from http://www.opencores.org/lgpl.shtml ////
+//// ////
+//////////////////////////////////////////////////////////////////////
+// Clock-in is east pad direction
+// clock out give in other three direction for better placement
+/////////////////////////////////////////////////////////////////////
+module clk_skew_adjust(
+`ifdef USE_POWER_PINS
+ vccd1,// User area 1 1.8V supply
+ vssd1,// User area 1 digital ground
+`endif
+clk_in, sel, clk_out);
+
+
+`ifdef USE_POWER_PINS
+ input vccd1;// User area 1 1.8V supply
+ input vssd1;// User area 1 digital ground
+`endif
+ input clk_in;
+ output clk_out;
+ input [3:0] sel;
+ wire in0;
+ wire in1;
+ wire in2;
+ wire in3;
+ wire in4;
+ wire in5;
+ wire in6;
+ wire in7;
+ wire in8;
+ wire in9;
+ wire in10;
+ wire in11;
+ wire in12;
+ wire in13;
+ wire in14;
+ wire in15;
+
+ wire clk_d1;
+ wire clk_d2;
+ wire clk_d3;
+ wire clk_d4;
+ wire clk_d5;
+ wire clk_d6;
+ wire clk_d7;
+ wire clk_d8;
+ wire clk_d9;
+ wire clk_d10;
+ wire clk_d11;
+ wire clk_d12;
+ wire clk_d13;
+ wire clk_d14;
+ wire clk_d15;
+
+ wire d00;
+ wire d01;
+ wire d02;
+ wire d03;
+ wire d04;
+ wire d05;
+ wire d06;
+ wire d07;
+ wire d10;
+ wire d11;
+ wire d12;
+ wire d13;
+ wire d20;
+ wire d21;
+ wire d30;
+
+
+ ctech_delay_clkbuf clkbuf_1 (.A(clk_in), .X(clk_d1));
+ ctech_delay_clkbuf clkbuf_2 (.A(clk_d1), .X(clk_d2));
+ ctech_delay_clkbuf clkbuf_3 (.A(clk_d2), .X(clk_d3));
+ ctech_delay_clkbuf clkbuf_4 (.A(clk_d3), .X(clk_d4));
+ ctech_delay_clkbuf clkbuf_5 (.A(clk_d4), .X(clk_d5));
+ ctech_delay_clkbuf clkbuf_6 (.A(clk_d5), .X(clk_d6));
+ ctech_delay_clkbuf clkbuf_7 (.A(clk_d6), .X(clk_d7));
+ ctech_delay_clkbuf clkbuf_8 (.A(clk_d7), .X(clk_d8));
+ ctech_delay_clkbuf clkbuf_9 (.A(clk_d8), .X(clk_d9));
+ ctech_delay_clkbuf clkbuf_10 (.A(clk_d9), .X(clk_d10));
+ ctech_delay_clkbuf clkbuf_11 (.A(clk_d10), .X(clk_d11));
+ ctech_delay_clkbuf clkbuf_12 (.A(clk_d11), .X(clk_d12));
+ ctech_delay_clkbuf clkbuf_13 (.A(clk_d12), .X(clk_d13));
+ ctech_delay_clkbuf clkbuf_14 (.A(clk_d13), .X(clk_d14));
+ ctech_delay_clkbuf clkbuf_15 (.A(clk_d14), .X(clk_d15));
+
+
+ // Tap point selection
+ assign in0 = clk_in;
+ assign in1 = clk_d1;
+ assign in2 = clk_d2;
+ assign in3 = clk_d3;
+ assign in4 = clk_d4;
+ assign in5 = clk_d5;
+ assign in6 = clk_d6;
+ assign in7 = clk_d7;
+ assign in8 = clk_d8;
+ assign in9 = clk_d9;
+ assign in10 = clk_d10;
+ assign in11 = clk_d11;
+ assign in12 = clk_d12;
+ assign in13 = clk_d13;
+ assign in14 = clk_d14;
+ assign in15 = clk_d15;
+
+
+ // first level mux - 8
+ ctech_mux2x1_2 u_mux_level_00 ( .X (d00) , .A0 (in0), .A1(in1), .S(sel[0]));
+ ctech_mux2x1_2 u_mux_level_01 ( .X (d01) , .A0 (in2), .A1(in3), .S(sel[0]));
+ ctech_mux2x1_2 u_mux_level_02 ( .X (d02) , .A0 (in4), .A1(in5), .S(sel[0]));
+ ctech_mux2x1_2 u_mux_level_03 ( .X (d03) , .A0 (in6), .A1(in7), .S(sel[0]));
+ ctech_mux2x1_2 u_mux_level_04 ( .X (d04) , .A0 (in8), .A1(in9), .S(sel[0]));
+ ctech_mux2x1_2 u_mux_level_05 ( .X (d05) , .A0 (in10), .A1(in11), .S(sel[0]));
+ ctech_mux2x1_2 u_mux_level_06 ( .X (d06) , .A0 (in12), .A1(in13), .S(sel[0]));
+ ctech_mux2x1_2 u_mux_level_07 ( .X (d07) , .A0 (in14), .A1(in15), .S(sel[0]));
+
+ // second level mux - 4
+ ctech_mux2x1_2 u_mux_level_10 ( .X (d10) , .A0 (d00), .A1(d01), .S(sel[1]));
+ ctech_mux2x1_2 u_mux_level_11 ( .X (d11) , .A0 (d02), .A1(d03), .S(sel[1]));
+ ctech_mux2x1_2 u_mux_level_12 ( .X (d12) , .A0 (d04), .A1(d05), .S(sel[1]));
+ ctech_mux2x1_2 u_mux_level_13 ( .X (d13) , .A0 (d06), .A1(d07), .S(sel[1]));
+
+ // third level mux - 2
+ ctech_mux2x1_2 u_mux_level_20 ( .X (d20) , .A0 (d10), .A1(d11), .S(sel[2]));
+ ctech_mux2x1_2 u_mux_level_21 ( .X (d21) , .A0 (d12), .A1(d13), .S(sel[2]));
+
+ // fourth level mux - 1
+ ctech_mux2x1_4 u_mux_level_30 ( .X (d30) , .A0 (d20), .A1(d21), .S(sel[3]));
+
+
+ assign clk_out = d30;
+
+endmodule
diff --git a/verilog/rtl/lib/ctech_cells.sv b/verilog/rtl/lib/ctech_cells.sv
index 8e3b0de..c9528de 100644
--- a/verilog/rtl/lib/ctech_cells.sv
+++ b/verilog/rtl/lib/ctech_cells.sv
@@ -13,6 +13,34 @@
endmodule
+module ctech_mux2x1_2 (
+ input logic A0,
+ input logic A1,
+ input logic S ,
+ output logic X);
+
+`ifndef SYNTHESIS
+assign X = (S) ? A1 : A0;
+`else
+sky130_fd_sc_hd__mux2_2 u_mux (.A0 (A0), .A1 (A1), .S (S), .X (X));
+`endif
+
+endmodule
+
+module ctech_mux2x1_4 (
+ input logic A0,
+ input logic A1,
+ input logic S ,
+ output logic X);
+
+`ifndef SYNTHESIS
+assign X = (S) ? A1 : A0;
+`else
+sky130_fd_sc_hd__mux2_4 u_mux (.A0 (A0), .A1 (A1), .S (S), .X (X));
+`endif
+
+endmodule
+
module ctech_buf (
input logic A,
output logic X);
@@ -49,3 +77,14 @@
endmodule
+module ctech_delay_clkbuf (
+ input logic A,
+ output logic X);
+
+`ifndef SYNTHESIS
+ assign X = A;
+`else
+ sky130_fd_sc_hd__clkdlybuf4s15_2 u_dly (.X(X),.A(A));
+`endif
+
+endmodule
diff --git a/verilog/rtl/qspim/src/qspim_top.sv b/verilog/rtl/qspim/src/qspim_top.sv
index ec7eb7c..a7c3a4b 100644
--- a/verilog/rtl/qspim/src/qspim_top.sv
+++ b/verilog/rtl/qspim/src/qspim_top.sv
@@ -236,18 +236,22 @@
// ADDing Delay cells for Interface hold fix
+wire spi_sdo0_d1,spi_sdo0_d2;
ctech_delay_buf u_delay1_sdio0 (.X(spi_sdo0_d1),.A(spi_sdo_int[0]));
ctech_delay_buf u_delay2_sdio0 (.X(spi_sdo0_d2),.A(spi_sdo0_d1));
ctech_buf u_buf_sdio0 (.X(spi_sdo[0]),.A(spi_sdo0_d2));
+wire spi_sdo1_d1,spi_sdo1_d2;
ctech_delay_buf u_delay1_sdio1 (.X(spi_sdo1_d1),.A(spi_sdo_int[1]));
ctech_delay_buf u_delay2_sdio1 (.X(spi_sdo1_d2),.A(spi_sdo1_d1));
ctech_buf u_buf_sdio1 (.X(spi_sdo[1]),.A(spi_sdo1_d2));
+wire spi_sdo2_d1,spi_sdo2_d2;
ctech_delay_buf u_delay1_sdio2 (.X(spi_sdo2_d1),.A(spi_sdo_int[2]));
ctech_delay_buf u_delay2_sdio2 (.X(spi_sdo2_d2),.A(spi_sdo2_d1));
ctech_buf u_buf_sdio2 (.X(spi_sdo[2]),.A(spi_sdo2_d2));
+wire spi_sdo3_d1,spi_sdo3_d2;
ctech_delay_buf u_delay1_sdio3 (.X(spi_sdo3_d1),.A(spi_sdo_int[3]));
ctech_delay_buf u_delay2_sdio3 (.X(spi_sdo3_d2),.A(spi_sdo3_d1));
ctech_buf u_buf_sdio3 (.X(spi_sdo[3]),.A(spi_sdo3_d2));
diff --git a/verilog/rtl/qspim/synth/Makefile b/verilog/rtl/qspim/synth/Makefile
index e69de29..dcf29dc 100644
--- a/verilog/rtl/qspim/synth/Makefile
+++ b/verilog/rtl/qspim/synth/Makefile
@@ -0,0 +1,52 @@
+# //////////////////////////////////////////////////////////////////////////////
+# // SPDX-FileCopyrightText: 2021, Dinesh Annayya
+# //
+# // 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
+# //
+# // http://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.
+# // SPDX-License-Identifier: Apache-2.0
+# // SPDX-FileContributor: Dinesh Annayya <dinesha@opencores.org>
+# // //////////////////////////////////////////////////////////////////////////
+#------------------------------------------------------------------------------
+# Makefile for Synthesis
+#------------------------------------------------------------------------------
+
+# Paths
+export ROOT_DIR := $(shell pwd)
+export REPORT_DIR := $(ROOT_DIR)/reports
+export NETLIST_DIR := $(ROOT_DIR)/netlist
+export TMP_DIR := $(ROOT_DIR)/tmp
+
+
+# Targets
+.PHONY: clean create synth
+
+default: clean create synth
+
+synth: clean create
+ yosys -g -c synth.tcl -l synth.log
+
+create:
+ mkdir -p ./tmp/synthesis;
+ mkdir -p ./reports;
+ mkdir -p ./netlist;
+ $(OPENLANE_ROOT)/scripts/libtrim.pl $(PDK_ROOT)/sky130A/libs.ref/sky130_fd_sc_hd/lib/sky130_fd_sc_hd__tt_025C_1v80.lib $(PDK_ROOT)/sky130A/libs.tech/openlane/sky130_fd_sc_hd/no_synth.cells > ./tmp/trimmed.lib
+ #create No PG Pin library for hand instantiated cells
+ sed '/pg_pin.*/a \ direction : "inout";' $(PDK_ROOT)/sky130A/libs.ref/sky130_fd_sc_hd/lib/sky130_fd_sc_hd__tt_025C_1v80.lib > ./tmp/sky130_fd_sc_hd__tt_025C_1v80.no_pg.lib
+ sed -i 's/pg_pin/pin/' ./tmp/sky130_fd_sc_hd__tt_025C_1v80.no_pg.lib
+
+
+
+clean:
+ $(RM) -R synth.log
+ $(RM) -R $(REPORT_DIR)
+ $(RM) -R $(NETLIST_DIR)
+ $(RM) -R $(TMP_DIR)
diff --git a/verilog/rtl/qspim/synth/synth.tcl b/verilog/rtl/qspim/synth/synth.tcl
index e69de29..0285cc5 100755
--- a/verilog/rtl/qspim/synth/synth.tcl
+++ b/verilog/rtl/qspim/synth/synth.tcl
@@ -0,0 +1,402 @@
+# //////////////////////////////////////////////////////////////////////////////
+# // SPDX-FileCopyrightText: 2021, Dinesh Annayya
+# //
+# // 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
+# //
+# // http://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.
+# // SPDX-License-Identifier: Apache-2.0
+# // SPDX-FileContributor: Dinesh Annayya <dinesha@opencores.org>
+# // //////////////////////////////////////////////////////////////////////////
+# inputs expected as env vars
+#set opt $::env(SYNTH_OPT)
+
+proc convert_pg_pins {lib_in lib_out} {
+ try_catch sed -E {s/^([[:space:]]+)pg_pin(.*)/\1pin\2\n\1 direction : "inout";/g} $lib_in > $lib_out
+}
+
+
+
+########### config.tcl ##################
+# User config
+set ::env(DESIGN_NAME) qspim_top
+
+# Change if needed
+set ::env(VERILOG_FILES) [glob \
+ ../src/qspim_if.sv \
+ ../src/qspim_clkgen.sv \
+ ../src/qspim_ctrl.sv \
+ ../src/qspim_fifo.sv \
+ ../src/qspim_regs.sv \
+ ../src/qspim_rx.sv \
+ ../src/qspim_top.sv \
+ ../src/qspim_tx.sv \
+ ../lib/clk_skew_adjust.gv \
+ ../lib/ctech_cells.sv \
+ ../lib/reset_sync.sv \
+ ]
+
+
+set ::env(SYNTH_DEFINES) [list SYNTHESIS ]
+
+
+set ::env(LIB_SYNTH) ./tmp/trimmed.lib
+set ::env(LIB_SYNTH_COMPLETE_NO_PG) ./tmp/sky130_fd_sc_hd__tt_025C_1v80.no_pg.lib
+
+
+
+# Fill this
+set ::env(CLOCK_PERIOD) "10"
+set ::env(CLOCK_PORT) "mclk"
+set ::env(CLOCK_TREE_SYNTH) 0
+
+set ::env(SYNTH_BUFFERING) 0
+set ::env(SYNTH_SIZING) 0
+
+set ::env(SYNTH_DRIVING_CELL) "sky130_fd_sc_hd__inv_8"
+set ::env(SYNTH_CAP_LOAD) "17.65"
+set ::env(SYNTH_MAX_TRAN) "[expr {0.1*10.0}]"
+
+set ::env(SYNTH_MAX_FANOUT) 6
+set ::env(FP_CORE_UTIL) 50
+set ::env(PL_TARGET_DENSITY) [ expr ($::env(FP_CORE_UTIL)+5) / 100.0 ]
+set ::env(CELL_PAD) 4
+
+set ::env(SYNTH_NO_FLAT) "0"
+
+set ::env(SYNTH_READ_BLACKBOX_LIB) "1"
+
+set ::env(SYNTH_STRATEGY) "AREA 0"
+set ::env(SYNTH_TIELO_PORT) "sky130_fd_sc_hd__conb_1 LO"
+set ::env(SYNTH_TIEHI_PORT) "sky130_fd_sc_hd__conb_1 HI"
+set ::env(SYNTH_MIN_BUF_PORT) "sky130_fd_sc_hd__buf_2 A X"
+
+
+set ::env(CLOCK_NET) $::env(CLOCK_PORT)
+
+
+
+set ::env(yosys_tmp_file_tag) "./tmp/"
+set ::env(TMP_DIR) "./tmp/"
+set ::env(yosys_netlist_dir) "./netlist"
+set ::env(yosys_report_file_tag) "./reports/yosys"
+set ::env(yosys_result_file_tag) "./reports/yosys.synthesis"
+
+set ::env(SAVE_NETLIST) $::env(yosys_netlist_dir)/$::env(DESIGN_NAME).gv
+
+
+
+########### End of config.tcl
+set buffering $::env(SYNTH_BUFFERING)
+set sizing $::env(SYNTH_SIZING)
+
+yosys -import
+
+set vtop $::env(DESIGN_NAME)
+#set sdc_file $::env(SDC_FILE)
+set sclib $::env(LIB_SYNTH)
+
+if { [info exists ::env(SYNTH_DEFINES) ] } {
+ foreach define $::env(SYNTH_DEFINES) {
+ log "Defining $define"
+ verilog_defines -D$define
+ }
+}
+
+set vIdirsArgs ""
+if {[info exist ::env(VERILOG_INCLUDE_DIRS)]} {
+ foreach dir $::env(VERILOG_INCLUDE_DIRS) {
+ log "Adding include file -I$dir "
+ lappend vIdirsArgs "-I$dir"
+ }
+ set vIdirsArgs [join $vIdirsArgs]
+}
+
+if { $::env(SYNTH_READ_BLACKBOX_LIB) } {
+ log "Reading $::env(LIB_SYNTH_COMPLETE_NO_PG) as a blackbox"
+ read_liberty -lib -ignore_miss_dir -setattr blackbox $::env(LIB_SYNTH_COMPLETE_NO_PG)
+}
+
+
+if { [info exists ::env(EXTRA_LIBS) ] } {
+ foreach lib $::env(EXTRA_LIBS) {
+ read_liberty {*}$vIdirsArgs -lib -ignore_miss_dir -setattr blackbox $lib
+ }
+}
+
+
+
+# ns expected (in sdc as well)
+set clock_period [expr {$::env(CLOCK_PERIOD)*1000}]
+
+set driver $::env(SYNTH_DRIVING_CELL)
+set cload $::env(SYNTH_CAP_LOAD)
+# input pin cap of IN_3VX8
+set max_FO $::env(SYNTH_MAX_FANOUT)
+if {![info exist ::env(SYNTH_MAX_TRAN)]} {
+ set ::env(SYNTH_MAX_TRAN) [expr {0.1*$clock_period}]
+} else {
+ set ::env(SYNTH_MAX_TRAN) [expr {$::env(SYNTH_MAX_TRAN) * 1000}]
+}
+set max_Tran $::env(SYNTH_MAX_TRAN)
+
+
+# Mapping parameters
+set A_factor 0.00
+set B_factor 0.88
+set F_factor 0.00
+
+# Don't change these unless you know what you are doing
+set stat_ext ".stat.rpt"
+set chk_ext ".chk.rpt"
+set gl_ext ".gl.v"
+set constr_ext ".$clock_period.constr"
+set timing_ext ".timing.txt"
+set abc_ext ".abc"
+
+
+# get old sdc, add library specific stuff for abc scripts
+set sdc_file $::env(yosys_tmp_file_tag).sdc
+set outfile [open ${sdc_file} w]
+#puts $outfile $sdc_data
+puts $outfile "set_driving_cell ${driver}"
+puts $outfile "set_load ${cload}"
+close $outfile
+
+
+# ABC Scrips
+set abc_rs_K "resub,-K,"
+set abc_rs "resub"
+set abc_rsz "resub,-z"
+set abc_rw_K "rewrite,-K,"
+set abc_rw "rewrite"
+set abc_rwz "rewrite,-z"
+set abc_rf "refactor"
+set abc_rfz "refactor,-z"
+set abc_b "balance"
+
+set abc_resyn2 "${abc_b}; ${abc_rw}; ${abc_rf}; ${abc_b}; ${abc_rw}; ${abc_rwz}; ${abc_b}; ${abc_rfz}; ${abc_rwz}; ${abc_b}"
+set abc_share "strash; multi,-m; ${abc_resyn2}"
+set abc_resyn2a "${abc_b};${abc_rw};${abc_b};${abc_rw};${abc_rwz};${abc_b};${abc_rwz};${abc_b}"
+set abc_resyn3 "balance;resub;resub,-K,6;balance;resub,-z;resub,-z,-K,6;balance;resub,-z,-K,5;balance"
+set abc_resyn2rs "${abc_b};${abc_rs_K},6;${abc_rw};${abc_rs_K},6,-N,2;${abc_rf};${abc_rs_K},8;${abc_rw};${abc_rs_K},10;${abc_rwz};${abc_rs_K},10,-N,2;${abc_b},${abc_rs_K},12;${abc_rfz};${abc_rs_K},12,-N,2;${abc_rwz};${abc_b}"
+
+set abc_choice "fraig_store; ${abc_resyn2}; fraig_store; ${abc_resyn2}; fraig_store; fraig_restore"
+set abc_choice2 "fraig_store; balance; fraig_store; ${abc_resyn2}; fraig_store; ${abc_resyn2}; fraig_store; ${abc_resyn2}; fraig_store; fraig_restore"
+
+set abc_map_old_cnt "map,-p,-a,-B,0.2,-A,0.9,-M,0"
+set abc_map_old_dly "map,-p,-B,0.2,-A,0.9,-M,0"
+set abc_retime_area "retime,-D,{D},-M,5"
+set abc_retime_dly "retime,-D,{D},-M,6"
+set abc_map_new_area "amap,-m,-Q,0.1,-F,20,-A,20,-C,5000"
+
+set abc_area_recovery_1 "${abc_choice}; map;"
+set abc_area_recovery_2 "${abc_choice2}; map;"
+
+set map_old_cnt "map,-p,-a,-B,0.2,-A,0.9,-M,0"
+set map_old_dly "map,-p,-B,0.2,-A,0.9,-M,0"
+set abc_retime_area "retime,-D,{D},-M,5"
+set abc_retime_dly "retime,-D,{D},-M,6"
+set abc_map_new_area "amap,-m,-Q,0.1,-F,20,-A,20,-C,5000"
+
+if {$buffering==1} {
+ set abc_fine_tune "buffer,-N,${max_FO},-S,${max_Tran};upsize,{D};dnsize,{D}"
+} elseif {$sizing} {
+ set abc_fine_tune "upsize,{D};dnsize,{D}"
+} else {
+ set abc_fine_tune ""
+}
+
+
+set delay_scripts [list \
+ "+read_constr,${sdc_file};fx;mfs;strash;refactor;${abc_resyn2};${abc_retime_dly}; scleanup;${abc_map_old_dly};retime,-D,{D};${abc_fine_tune};stime,-p;print_stats -m" \
+ \
+ "+read_constr,${sdc_file};fx;mfs;strash;refactor;${abc_resyn2};${abc_retime_dly}; scleanup;${abc_choice2};${abc_map_old_dly};${abc_area_recovery_2}; retime,-D,{D};${abc_fine_tune};stime,-p;print_stats -m" \
+ \
+ "+read_constr,${sdc_file};fx;mfs;strash;refactor;${abc_resyn2};${abc_retime_dly}; scleanup;${abc_choice};${abc_map_old_dly};${abc_area_recovery_1}; retime,-D,{D};${abc_fine_tune};stime,-p;print_stats -m" \
+ \
+ "+read_constr,${sdc_file};fx;mfs;strash;refactor;${abc_resyn2};${abc_retime_area};scleanup;${abc_choice2};${abc_map_new_area};${abc_choice2};${abc_map_old_dly};retime,-D,{D};${abc_fine_tune};stime,-p;print_stats -m" \
+ ]
+
+set area_scripts [list \
+ "+read_constr,${sdc_file};fx;mfs;strash;refactor;${abc_resyn2};${abc_retime_area};scleanup;${abc_choice2};${abc_map_new_area};retime,-D,{D};${abc_fine_tune};stime,-p;print_stats -m" \
+ \
+ "+read_constr,${sdc_file};fx;mfs;strash;refactor;${abc_resyn2};${abc_retime_area};scleanup;${abc_choice2};${abc_map_new_area};${abc_choice2};${abc_map_new_area};retime,-D,{D};${abc_fine_tune};stime,-p;print_stats -m" \
+ \
+ "+read_constr,${sdc_file};fx;mfs;strash;refactor;${abc_choice2};${abc_retime_area};scleanup;${abc_choice2};${abc_map_new_area};${abc_choice2};${abc_map_new_area};retime,-D,{D};${abc_fine_tune};stime,-p;print_stats -m" \
+ ]
+
+set all_scripts [list {*}$delay_scripts {*}$area_scripts]
+
+set strategy_parts [split $::env(SYNTH_STRATEGY)]
+
+proc synth_strategy_format_err { } {
+ upvar area_scripts area_scripts
+ upvar delay_scripts delay_scripts
+ log -stderr "\[ERROR] Misformatted SYNTH_STRATEGY (\"$::env(SYNTH_STRATEGY)\")."
+ log -stderr "\[ERROR] Correct format is \"DELAY|AREA 0-[expr [llength $delay_scripts]-1]|0-[expr [llength $area_scripts]-1]\"."
+ exit 1
+}
+
+if { [llength $strategy_parts] != 2 } {
+ synth_strategy_format_err
+}
+
+set strategy_type [lindex $strategy_parts 0]
+set strategy_type_idx [lindex $strategy_parts 1]
+
+if { $strategy_type != "AREA" && $strategy_type != "DELAY" } {
+ log -stderr "\[ERROR] AREA|DELAY tokens not found. ($strategy_type)"
+ synth_strategy_format_err
+}
+
+if { $strategy_type == "DELAY" && $strategy_type_idx >= [llength $delay_scripts] } {
+ log -stderr "\[ERROR] strategy index ($strategy_type_idx) is too high."
+ synth_strategy_format_err
+}
+
+if { $strategy_type == "AREA" && $strategy_type_idx >= [llength $area_scripts] } {
+ log -stderr "\[ERROR] strategy index ($strategy_type_idx) is too high."
+ synth_strategy_format_err
+}
+
+if { $strategy_type == "DELAY" } {
+ set strategy $strategy_type_idx
+} else {
+ set strategy [expr {[llength $delay_scripts]+$strategy_type_idx}]
+}
+
+
+for { set i 0 } { $i < [llength $::env(VERILOG_FILES)] } { incr i } {
+ read_verilog -sv {*}$vIdirsArgs [lindex $::env(VERILOG_FILES) $i]
+}
+
+if { [info exists ::env(VERILOG_FILES_BLACKBOX)] } {
+ foreach verilog_file $::env(VERILOG_FILES_BLACKBOX) {
+ read_verilog -sv {*}$vIdirsArgs -lib $verilog_file
+ }
+}
+select -module $vtop
+show -format dot -prefix $::env(TMP_DIR)/synthesis/hierarchy
+select -clear
+
+hierarchy -check -top $vtop
+
+# Infer tri-state buffers.
+set tbuf_map false
+if { [info exists ::env(TRISTATE_BUFFER_MAP)] } {
+ if { [file exists $::env(TRISTATE_BUFFER_MAP)] } {
+ set tbuf_map true
+ tribuf
+ } else {
+ log "WARNING: TRISTATE_BUFFER_MAP is defined but could not be found: $::env(TRISTATE_BUFFER_MAP)"
+ }
+}
+
+if { $::env(SYNTH_NO_FLAT) } {
+ synth -top $vtop
+} else {
+ synth -top $vtop -flatten
+}
+
+share -aggressive
+opt
+opt_clean -purge
+
+tee -o "$::env(yosys_report_file_tag)_pre.stat" stat
+
+# Map tri-state buffers.
+if { $tbuf_map } {
+ log {mapping tbuf}
+ techmap -map $::env(TRISTATE_BUFFER_MAP)
+ simplemap
+}
+
+# handle technology mapping of 4-MUX, and tell Yosys to infer 4-muxes
+if { [info exists ::env(SYNTH_MUX4_MAP)] && [file exists $::env(SYNTH_MUX4_MAP)] } {
+ muxcover -mux4
+ techmap -map $::env(SYNTH_MUX4_MAP)
+ simplemap
+}
+
+# handle technology mapping of 2-MUX
+if { [info exists ::env(SYNTH_MUX_MAP)] && [file exists $::env(SYNTH_MUX_MAP)] } {
+ techmap -map $::env(SYNTH_MUX_MAP)
+ simplemap
+}
+
+# handle technology mapping of latches
+if { [info exists ::env(SYNTH_LATCH_MAP)] && [file exists $::env(SYNTH_LATCH_MAP)] } {
+ techmap -map $::env(SYNTH_LATCH_MAP)
+ simplemap
+}
+
+dfflibmap -liberty $sclib
+tee -o "$::env(yosys_report_file_tag)_dff.stat" stat
+
+if { [info exists ::env(SYNTH_EXPLORE)] && $::env(SYNTH_EXPLORE) } {
+ design -save myDesign
+
+ for { set index 0 } { $index < [llength $all_scripts] } { incr index } {
+ log "\[INFO\]: ABC: WireLoad : S_$index"
+ design -load myDesign
+
+ abc -D $clock_period \
+ -constr "$sdc_file" \
+ -liberty $sclib \
+ -script [lindex $all_scripts $index]
+
+ setundef -zero
+
+ hilomap -hicell {*}$::env(SYNTH_TIEHI_PORT) -locell {*}$::env(SYNTH_TIELO_PORT)
+
+ # get rid of the assignments that make verilog2def fail
+ splitnets
+ opt_clean -purge
+ insbuf -buf {*}$::env(SYNTH_MIN_BUF_PORT)
+
+ tee -o "$::env(yosys_report_file_tag)_$index$chk_ext" check
+ write_verilog -noattr -noexpr -nohex -nodec -defparam "$::env(yosys_result_file_tag)_$index.v"
+ design -reset
+ }
+} else {
+
+ log "\[INFO\]: ABC: WireLoad : S_$strategy"
+
+ abc -D $clock_period \
+ -constr "$sdc_file" \
+ -liberty $sclib \
+ -script [lindex $all_scripts $strategy] \
+ -showtmp;
+
+ setundef -zero
+
+ hilomap -hicell {*}$::env(SYNTH_TIEHI_PORT) -locell {*}$::env(SYNTH_TIELO_PORT)
+
+ # get rid of the assignments that make verilog2def fail
+ splitnets
+ opt_clean -purge
+ insbuf -buf {*}$::env(SYNTH_MIN_BUF_PORT)
+
+ tee -o "$::env(yosys_report_file_tag)_$strategy$chk_ext" check
+ write_verilog -noattr -noexpr -nohex -nodec -defparam "$::env(SAVE_NETLIST)"
+}
+
+if { $::env(SYNTH_NO_FLAT) } {
+ design -reset
+ file copy -force $::env(SAVE_NETLIST) $::env(yosys_tmp_file_tag)_unflat.v
+ read_verilog -sv $::env(SAVE_NETLIST)
+ synth -top $vtop -flatten
+ splitnets
+ opt_clean -purge
+ insbuf -buf {*}$::env(SYNTH_MIN_BUF_PORT)
+ write_verilog -noattr -noexpr -nohex -nodec -defparam "$::env(SAVE_NETLIST)"
+ tee -o "$::env(yosys_report_file_tag)_$strategy$chk_ext" check
+}
