feasibility_dp.tcl

synopsys icc 使用参考脚本

##########################################################################################
## ICC Design Planning RM
## feasibility_dp: Virtual Flat Placement, PNS, PNA, IPO, Proto Route, and Explore Runs
## Version B-2008.09
##########################################################################################


source icc_setup.tcl
source icc_dp_scripts/proc_explore.tcl
gui_set_current_task -name {Design Planning}

open_mw_lib $MW_DESIGN_LIBRARY
copy_mw_cel -from $ICC_FLOORPLAN_CEL -to feasibility_dp
open_mw_cel feasibility_dp
link



source ./icc_scripts/common_placement_settings_icc.tcl
source ./icc_scripts/common_optimization_settings_icc.tcl

## (Optional) Set ideal network on nets with fanout larger than the specified threshold  
if {$ICC_DP_SET_HFNS_AS_IDEAL_THRESHOLD != ""} {
	set hf_nets [all_high_fanout -nets -threshold $ICC_DP_SET_HFNS_AS_IDEAL_THRESHOLD]
	if { $hf_nets != "" } {
		redirect /dev/null {set_load 0 -subtract_pin_load $hf_nets}
		redirect /dev/null {set_ideal_network -no_propagate $hf_nets}
	}
}

## (Optional) Set ideal network on mixed clock/signal paths with high fanout; this will be removed in clock_opt_psyn_icc.tcl
if {$ICC_DP_SET_MIXED_AS_IDEAL eq "true"} {set_ideal_network [all_fanout -flat -clock_tree]}

## Additional reporting before the major steps
if {$ICC_DP_VERBOSE_REPORTING eq "true"} {
	check_design -summary > ${REPORTS_DIR}/feasibility_dp.check_design.rpt
	report_net_fanout -threshold 50 > ${REPORTS_DIR}/feasibility_dp.high_fanout.rpt
}



########################################################################################
## Set Placement Constraints
########################################################################################

## You can control if you want to unfix macros before placement:
#	set ICC_DP_FIX_MACRO_LIST ""		: unfix all macros; 
#						  it performs remove_dont_touch_placement on macros
#	set ICC_DP_FIX_MACRO_LIST skip		: skip unfix of macros; retain existing fix status; 
#					          it change macro fix status
#	set ICC_DP_FIX_MACRO_LIST {a list}	: fix specified macros and unfix the others; useful if you want to preserve certain macros locations
#						  it performs remove_dont_touch_placement and then set_dont_touch_placement on specified macros
if {[all_macro_cells] != ""} {

	if {$ICC_DP_FIX_MACRO_LIST eq ""} {
	        remove_dont_touch_placement [all_macro_cells]
	} elseif {$ICC_DP_FIX_MACRO_LIST eq "skip"} {
	        echo "remove_dont_touch_placement for macros is skipped"
	} else {
	        remove_dont_touch_placement [all_macro_cells]
	        set_dont_touch_placement $ICC_DP_FIX_MACRO_LIST}

}


## You can customize padding and location preference by loading a file
## Below are examples for the kind of commands to put in the file using set_keepout_margin and fp_set_macro_placement_constraint
#       set_keepout_margin -type soft -all_macros -outer {10 10 10 10}
#       fp_set_macro_placement_constraint -align t {macro_1 macro_2 macro_3}
if {[file exists [which $CUSTOM_ICC_DP_PLACE_CONSTRAINT_SCRIPT]]} {
        source $CUSTOM_ICC_DP_PLACE_CONSTRAINT_SCRIPT}


## You can customize power network synthesis constraints by loading a file
## Below are examples for the kind of commands to put in the file using fp_set_power_plan_constraints 
#       fp_set_power_plan_constraints -keep_ring_outside_core -no_routing_over_hard_macros 0
if {[file exists [which $CUSTOM_ICC_DP_PNS_CONSTRAINT_SCRIPT]]} {
	source $CUSTOM_ICC_DP_PNS_CONSTRAINT_SCRIPT}



######################################################################################################################
## Feasibility Flow : Virtual Flat Placement, Power Network Synthesis/Analysis, In Place Optimization, and Proto Route 
######################################################################################################################

## There're two ways (or modes) that you can perform feasibility flow depending on your needs.
## Explore mode : It automates multiple runs of virtual flat placement each with different combinations of placement parameters and options.
##		  It also performs proto route, IPO, and PNS/PNA for full flow feasibility analysis
## Baseline mode : It performs one run of virtual flat placement + global route + PNS/PNA + IPOplain script for feasibility flow
##	 	   It can serve as your reference and template for interactive runs
## Both modes are based on same underlying flow steps

if {$ICC_DP_EXPLORE_MODE eq "true"} {

	## // Explore mode // 
	## explore.tcl : It contains all the runs to be performed. You can customize this file based on your needs. See the file for more details. 
	## gen_explore_table : It runs a Perl script to parse the outputs and generate an HTML table: ./${DESIGN_NAME}_explore.html
	save_mw_cel -as saved_cel_before_explore_mode -overwrite
	close_mw_cel
	source icc_dp_scripts/explore.tcl
	sh icc_dp_scripts/gen_explore_table ${REPORTS_DIR} ${DESIGN_NAME}_explore.html
 
} else {

	## // Baseline mode //
	## baseline.tcl : Plain script without automation which can be used as a template or starting point
	source icc_dp_scripts/baseline.tcl

}



##################################################################################################################################################
## If you use explore mode,
## how to use explore run results and continue in ICC-RM?
##################################################################################################################################################
##
## After explore mode is done, please review results in HTML table ${DESIGN_NAME}_explore.html and pick one result you like to continue ICC-RM
## You can do this by either of the following depending on your preference:
##
## - Use the saved CEL from the run you like as starting point for ICC-RM
##   -> Please change varible ICC_FLOORPLAN_CEL in icc_setup.tcl to this CEL name
##    * This CEL will contain fixed macro placement or In Place Optimization or Power Network Synthesis changes depeding on what option you choose
##    * ICC_FLOORPLAN_CEL is the variable which you specify the starting CEL of ICC-RM
##
## - Use the dumped floorplan_file and routes from the run you like and load it to original CEL
##   -> Open CEL saved_cel_before_explore_mode, load the dumped floorplan file and routes from the run you like 
##   -> save the CEL as for example, feasibility_dp and change ICC_FLOORPLAN_CEL to feasibility_dp
##    * This approach ensures no netlist change and only macro placement and PG routes.   
##    * saved_cel_before_explore_mode is the CEL saved before explore mode starts which is your clean starting point.
##    * the dumped floorplan file is in $RESULTS_DIR, for ex, you can load it by: 
##		read_floorplan $RESULTS_DIR/run0_default_dump.floorplan  
##    * the dumped route file is in $RESULTS_DIR, for ex, you can load it by:
##		read_floorplan $RESULTS_DIR/run0_default_dump.route 



exit