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paolopedrosopaolopedroso
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test case
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‎flow/Makefile‎

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Original file line numberDiff line numberDiff line change
@@ -505,6 +505,21 @@ cts: $(RESULTS_DIR)/4_cts.odb \
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# Run TritonCTS
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# ------------------------------------------------------------------------------
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ifeq ($(MODE), two_phase_clk)
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$(eval $(call do-step,4_1_cts,$(RESULTS_DIR)/3_place.odb $(RESULTS_DIR)/3_place.sdc,cts_build_1))
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$(eval $(call do-step,4_2_cts,$(RESULTS_DIR)/4_1_cts.odb $(RESULTS_DIR)/4_1_cts.sdc,cts_build_2))
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$(eval $(call do-step,4_3_cts,$(RESULTS_DIR)/4_2_cts.odb $(RESULTS_DIR)/4_2_cts.sdc,cts_checks))
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$(eval $(call do-copy,4_cts,4_3_cts.odb))
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.PHONY: do-cts
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do-cts:
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$(UNSET_AND_MAKE) do-4_1_cts do-4_2_cts do-4_3_cts do-4_cts
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else
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$(eval $(call do-step,4_1_cts,$(RESULTS_DIR)/3_place.odb $(RESULTS_DIR)/3_place.sdc,cts))
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$(RESULTS_DIR)/4_cts.sdc: $(RESULTS_DIR)/4_cts.odb
@@ -515,6 +530,10 @@ $(eval $(call do-copy,4_cts,4_1_cts.odb))
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do-cts:
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$(UNSET_AND_MAKE) do-4_1_cts do-4_cts
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endif
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$(RESULTS_DIR)/4_cts.sdc: $(RESULTS_DIR)/4_cts.odb
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.PHONY: clean_cts
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clean_cts:
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rm -rf $(RESULTS_DIR)/4_*cts*.odb $(RESULTS_DIR)/4_cts.sdc $(RESULTS_DIR)/4_*.v $(RESULTS_DIR)/4_*.def

‎flow/designs/sky130hd/gcd/config.mk‎

Lines changed: 6 additions & 1 deletion
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@@ -11,7 +11,12 @@ export ADDER_MAP_FILE :=
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export CORE_UTILIZATION = 40
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export TNS_END_PERCENT = 100
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export EQUIVALENCE_CHECK ?= 1
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# export EQUIVALENCE_CHECK ?= 1
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# turn off eqy for this test case
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export EQUIVALENCE_CHECK ?= 0
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export REMOVE_CELLS_FOR_EQY = sky130_fd_sc_hd__tapvpwrvgnd*
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# This allows Yosys to print more details to the terminal during execution

‎flow/scripts/cts_build_1.tcl‎

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utl::set_metrics_stage "cts__clk_1"
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source $::env(SCRIPTS_DIR)/load.tcl
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erase_non_stage_variables cts
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load_design 3_place.odb 3_place.sdc
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puts "=========================================================================="
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puts "Two phase mode: Building clock tree for clk_1"
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puts "--------------------------------------------------------------------------"
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repair_clock_inverters
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set cts_args [list \
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-sink_clustering_enable \
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-repair_clock_nets \
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-balance_levels \
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-clk_nets clk_1
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]
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append_env_var cts_args CTS_BUF_DISTANCE -distance_between_buffers 1
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append_env_var cts_args CTS_CLUSTER_SIZE -sink_clustering_size 1
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append_env_var cts_args CTS_CLUSTER_DIAMETER -sink_clustering_max_diameter 1
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append_env_var cts_args CTS_BUF_LIST -buf_list 1
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append_env_var cts_args CTS_LIB_NAME -library 1
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if { [env_var_exists_and_non_empty CTS_ARGS] } {
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set cts_args $::env(CTS_ARGS)
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}
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set_dont_use $::env(DONT_USE_CELLS)
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log_cmd clock_tree_synthesis {*}$cts_args
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detailed_placement
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estimate_parasitics -placement
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# report_two_phase_metrics 4 "cts clk_1 complete" "clk_1"
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puts "report_clock_skew test"
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puts "===================="
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report_clock_skew
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puts "\nreport_clock_skew -clock clk_1 test"
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puts "===================="
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report_clock_skew -clock clk_1
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puts "\nreport_clock_skew -setup -clock clk_1 test"
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puts "===================="
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report_clock_skew -setup -clock clk_1
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puts "\nreport_clock_skew -hold -clock clk_1"
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puts "===================="
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report_clock_skew -hold -clock clk_1
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write_db $::env(RESULTS_DIR)/4_1_cts.odb
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write_sdc -no_timestamp $::env(RESULTS_DIR)/4_1_cts.sdc

‎flow/scripts/cts_build_2.tcl‎

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utl::set_metrics_stage "cts__clk_2"
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source $::env(SCRIPTS_DIR)/load.tcl
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erase_non_stage_variables cts
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load_design 4_1_cts.odb 4_1_cts.sdc
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puts "=========================================================================="
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puts "Two phase mode: Building clock tree for clk_2"
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puts "--------------------------------------------------------------------------"
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set cts_clk_2_args [list \
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-sink_clustering_enable \
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-balance_levels \
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-repair_clock_nets \
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-clk_nets clk_2 \
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-dont_use_dummy_load
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]
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append_env_var cts_clk_2_args CTS_BUF_DISTANCE -distance_between_buffers 1
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append_env_var cts_clk_2_args CTS_CLUSTER_SIZE -sink_clustering_size 1
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append_env_var cts_clk_2_args CTS_CLUSTER_DIAMETER -sink_clustering_max_diameter 1
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append_env_var cts_clk_2_args CTS_BUF_LIST -buf_list 1
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append_env_var cts_clk_2_args CTS_LIB_NAME -library 1
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if { [env_var_exists_and_non_empty CTS_ARGS] } {
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set cts_clk_2_args $::env(CTS_ARGS)
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}
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set_dont_use $::env(DONT_USE_CELLS)
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log_cmd clock_tree_synthesis {*}$cts_clk_2_args
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detailed_placement
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estimate_parasitics -placement
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# report_two_phase_metrics 4 "cts clk_2 complete" "clk_2"
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puts "report_clock_skew test"
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puts "===================="
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report_clock_skew
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puts "\nreport_clock_skew -clock clk_2 test"
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puts "===================="
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report_clock_skew -clock clk_2
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puts "\nreport_clock_skew -setup -clock clk_2 test"
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puts "===================="
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report_clock_skew -setup -clock clk_2
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puts "\nreport_clock_skew -hold -clock clk_2"
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puts "===================="
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report_clock_skew -hold -clock clk_2
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write_db $::env(RESULTS_DIR)/4_2_cts.odb
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write_sdc -no_timestamp $::env(RESULTS_DIR)/4_2_cts.sdc

‎flow/scripts/cts_checks.tcl‎

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utl::set_metrics_stage "cts__checks"
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source $::env(SCRIPTS_DIR)/load.tcl
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erase_non_stage_variables cts
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load_design 4_2_cts.odb 4_2_cts.sdc
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# load appropiate designs for final checking
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puts "=========================================================================="
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puts "Running CTS checks and repair for two-phase clocking"
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puts "--------------------------------------------------------------------------"
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proc save_progress { stage } {
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puts "Run 'make gui_$stage.odb' to load progress snapshot"
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write_db $::env(RESULTS_DIR)/$stage.odb
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write_sdc -no_timestamp $::env(RESULTS_DIR)/$stage.sdc
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}
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# pre-repair
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utl::push_metrics_stage "cts__{}__pre_repair_timing"
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estimate_parasitics -placement
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if { $::env(DETAILED_METRICS) } {
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report_metrics 4 "cts pre-repair-timing"
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}
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utl::pop_metrics_stage
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# detailed placement variables
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set_placement_padding -global \
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-left $::env(CELL_PAD_IN_SITES_DETAIL_PLACEMENT) \
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-right $::env(CELL_PAD_IN_SITES_DETAIL_PLACEMENT)
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detailed_placement
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estimate_parasitics -placement
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if { [env_var_equals CTS_SNAPSHOTS 1] } {
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save_progress 4_pre_repair_hold_setup
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}
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# Repair timing
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if { ![env_var_equals SKIP_CTS_REPAIR_TIMING 1] } {
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# equivalence check before repair
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if { $::env(EQUIVALENCE_CHECK) } {
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puts "\[INFO\] write_eqy_verilog 4_before_rsz.v"
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write_eqy_verilog 4_before_rsz.v
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}
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repair_timing_helper -setup -setup_margin 1 -hold -hold_margin 0.0 -max_repairs_per_pass 1
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# equivalence check after repair
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if { $::env(EQUIVALENCE_CHECK) } {
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puts "\[INFO\] run_equivalence_test"
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run_equivalence_test
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}
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set result [catch { detailed_placement } msg]
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if { $result != 0 } {
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save_progress 4_error
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puts "Detailed placement failed in CTS: $msg"
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exit $result
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}
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check_placement -verbose
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}
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report_metrics 4 "cts final"
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source_env_var_if_exists POST_CTS_TCL
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write_db $::env(RESULTS_DIR)/4_3_cts.odb
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write_sdc -no_timestamp $::env(RESULTS_DIR)/4_cts.sdc

‎run.sh‎

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#!/bin/bash
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TAG="${1:-openroad/orfs:v3.0-4020-g93a69fb95}"
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echo "Running OpenROAD flow with tag: ${TAG}"
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docker run --rm -it \
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-u "$(id -u "${USER}")":"$(id -g "${USER}")" \
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-v "$(pwd)/flow:/OpenROAD-flow-scripts/flow" \
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-e DISPLAY="${DISPLAY}" \
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-v /tmp/.X11-unix:/tmp/.X11-unix \
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-v "${HOME}/.Xauthority:/.Xauthority" \
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--network host \
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--security-opt seccomp=unconfined \
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"${TAG}"

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