144 lines
4.8 KiB
Tcl
144 lines
4.8 KiB
Tcl
# Test CRPR with two clocks, cross-domain paths, data checks,
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# and various CRPR modes.
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# Covers: Crpr.cc portClkPath, crprArrivalDiff, findCrpr variants,
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# Search.cc cross-domain paths, WorstSlack.cc queue operations,
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# Sta.cc worstSlack corner variant, VisitPathEnds.cc
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read_liberty ../../test/nangate45/Nangate45_typ.lib
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read_verilog search_crpr_data_checks.v
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link_design search_crpr_data_checks
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# Two independent clocks
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create_clock -name clk1 -period 10 [get_ports clk1]
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create_clock -name clk2 -period 8 [get_ports clk2]
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set_propagated_clock [get_clocks clk1]
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set_propagated_clock [get_clocks clk2]
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set_input_delay -clock clk1 1.0 [get_ports in1]
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set_input_delay -clock clk1 1.0 [get_ports in2]
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set_output_delay -clock clk1 2.0 [get_ports out1]
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set_output_delay -clock clk2 2.0 [get_ports out2]
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# Clock uncertainty
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set_clock_uncertainty 0.5 -setup [get_clocks clk1]
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set_clock_uncertainty 0.3 -hold [get_clocks clk1]
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set_clock_uncertainty 0.4 -setup [get_clocks clk2]
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set_clock_uncertainty 0.2 -hold [get_clocks clk2]
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# Cross-domain false path to avoid cross-domain timing issues
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# (but still exercise the path search for cross-domain)
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set_false_path -from [get_clocks clk1] -to [get_clocks clk2]
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# Timing derate
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set_timing_derate -early 0.95
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set_timing_derate -late 1.05
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puts "--- CRPR setup with two clocks ---"
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report_checks -path_delay max -format full_clock_expanded
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puts "--- CRPR hold with two clocks ---"
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report_checks -path_delay min -format full_clock_expanded
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puts "--- CRPR same_pin mode ---"
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sta::set_crpr_enabled 1
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sta::set_crpr_mode "same_pin"
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report_checks -path_delay max -format full_clock_expanded
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puts "--- CRPR same_transition mode ---"
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sta::set_crpr_mode "same_transition"
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report_checks -path_delay max -format full_clock_expanded
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report_checks -path_delay min -format full_clock_expanded
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puts "--- CRPR disabled ---"
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sta::set_crpr_enabled 0
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report_checks -path_delay max -format full_clock_expanded
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sta::set_crpr_enabled 1
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puts "--- report_clock_skew setup/hold ---"
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report_clock_skew -setup
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report_clock_skew -hold
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puts "--- report_clock_latency ---"
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report_clock_latency
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puts "--- find_timing_paths with CRPR ---"
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set paths [find_timing_paths -path_delay max -endpoint_count 5]
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puts "Found [llength $paths] paths"
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foreach pe $paths {
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puts " slack=[$pe slack] pin=[get_full_name [$pe pin]]"
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}
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puts "--- find_timing_paths min with CRPR ---"
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set paths_min [find_timing_paths -path_delay min -endpoint_count 5]
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puts "Found [llength $paths_min] hold paths"
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foreach pe $paths_min {
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puts " slack=[$pe slack]"
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}
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puts "--- worst_slack by clock ---"
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set ws1 [sta::worst_slack_cmd max]
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puts "worst_slack max: $ws1"
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set ws2 [sta::worst_slack_cmd min]
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puts "worst_slack min: $ws2"
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puts "--- total_negative_slack ---"
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set tns1 [sta::total_negative_slack_cmd max]
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puts "tns max: $tns1"
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set tns2 [sta::total_negative_slack_cmd min]
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puts "tns min: $tns2"
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puts "--- report_tns/wns ---"
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report_tns
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report_wns
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report_worst_slack -max
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report_worst_slack -min
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puts "--- report_check_types ---"
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report_check_types -verbose
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puts "--- check_setup ---"
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check_setup -verbose
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puts "--- Now set_data_check for skew testing ---"
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# Remove false path and add data_check constraint
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# Data checks create max_skew-like constraints
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set_data_check -from [get_pins reg1/CK] -to [get_pins reg2/D] -setup 0.1
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set_data_check -from [get_pins reg1/CK] -to [get_pins reg2/D] -hold 0.05
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report_checks -path_delay max -format full_clock_expanded
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report_checks -path_delay min -format full_clock_expanded
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puts "data_check constraints applied"
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puts "--- report_checks with various formats ---"
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report_checks -format full -path_delay max
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report_checks -format full_clock -path_delay max
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report_checks -format short -path_delay max
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report_checks -format end -path_delay max
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report_checks -format slack_only -path_delay max
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report_checks -format summary -path_delay max
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report_checks -format json -path_delay max
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puts "--- report_checks min formats ---"
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report_checks -format full -path_delay min
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report_checks -format full_clock -path_delay min
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report_checks -format json -path_delay min
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puts "--- report_checks between specific endpoints ---"
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report_checks -from [get_pins reg1/CK] -to [get_pins reg2/D] -format full_clock_expanded
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report_checks -from [get_ports in1] -to [get_ports out1] -format full_clock
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puts "--- report_checks with fields ---"
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report_checks -fields {capacitance slew fanout input_pin net} -format full_clock_expanded
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puts "--- min_period checks with two clocks ---"
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create_clock -name clk1 -period 0.05 [get_ports clk1]
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create_clock -name clk2 -period 0.04 [get_ports clk2]
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report_check_types -min_period
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report_check_types -min_period -verbose
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report_check_types -min_period -violators
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report_check_types -min_period -violators -verbose
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report_clock_min_period
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puts "--- pulse width checks ---"
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report_check_types -min_pulse_width
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report_check_types -min_pulse_width -verbose
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report_check_types -min_pulse_width
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