route_opt_icc.tcl

synopsys icc 使用参考脚本

## ICC RM Version: B-2008.09        


############################################
## route_opt_icc: Post Route optimization ##
############################################



source -echo icc_setup.tcl

open_mw_lib $MW_DESIGN_LIBRARY
redirect /dev/null "remove_mw_cel -version_kept 0 ${ICC_ROUTE_OPT_CEL}" 
copy_mw_cel -from $ICC_ROUTE_CEL -to $ICC_ROUTE_OPT_CEL
open_mw_cel $ICC_ROUTE_OPT_CEL

link




source -echo common_optimization_settings_icc.tcl
source -echo common_placement_settings_icc.tcl
source -echo common_post_cts_timing_settings.tcl



## Load the route and si settings
source -echo common_route_si_settings_icc.tcl






##############################
## RP : Relative Placement  ##     
##############################
## Ensuring that the RP cells are not changed during clock_opt
#set_rp_group_options [all_rp_groups] -route_opt_option fixed_placement
#set_rp_group_options [all_rp_groups] -route_opt_option "size_only"




if { [check_error -verbose] != 0} { echo "SCRIPT-Error, flagging ..." }
## start the post route optimization
set_app_var compile_instance_name_prefix icc_route


if {$LEAKAGE_POWER} {
  ##Execute post route leakage opto
  if {$ICC_STRATEGY == "TTR" } {
     route_opt -skip_initial_route -effort low -power 
  } 
  if {$ICC_STRATEGY == "QOR" } {
     route_opt -skip_initial_route -effort medium -xtalk_reduction -power
  }
} else {
  ##Default route_opt without leakage opto
  if {$ICC_STRATEGY == "TTR" } {
     route_opt -skip_initial_route -effort low 
  }
  if {$ICC_STRATEGY == "QOR" } {
     route_opt -skip_initial_route -effort medium -xtalk_reduction
  }
}



########################################
#   ADDITIONAL ROUTE_OPT FEATURES      #
########################################

## Additional Max_transition fixing :
## By default, route_opt will prioritize WNS and TNS over DRC ( e.g. max_tran fixing). If you want to 
## change this behavior, and give top priority to the DRC fixing, you need to set the variable below.
## Keep in mind : this variable, only works with the -only_design_rule swich in route_opt itself.
## violations.
#  set_app_var routeopt_drc_over_timing true
#  route_opt -effort high -incremental -only_design_rule


## Optimizing wirelenght and vias . Add the switch : -optimize_wire_via to the route_opt command :
#   route_opt -optimize_wire_via -effort low -xtalk_reduction 


## Improving QoR after the default route_opt run : 
#   route_opt -inc


## Limiting route_opt to specific optimization steps :
#   route_opt -size_only : do not insert buffers or move cells : limits the disturbance to the design
#   route_opt -only_xtalk_reduction : run only the Xtalk reduction engine
#   route_opt -only_hold_time : run only the Hold fixing engine
#   route_opt -(only_)wire_size : runs the wire size engine, that fixis timing violations by applying 
#                                 NDR's created by define_routing_rule

## Running size_only but still allowing buffers to be inserted for hold fixing :
#  set_app_var routeopt_allow_min_buffer_with_size_only true
if { [check_error -verbose] != 0} { echo "SCRIPT-Error, flagging ..." }



if {$MV_MODE != "NONE"} {


  ## in case new nets are created that go from one VA to another, level shifters need to be inserted on these nets 
  # insert_level_shifters -all_clock_nets -verbose

  ## optionally insert isolation cells 
  # insert_isolation_cell -reference $lib_cell -enable [find net $enable_net] -object_list [get_net $nets_missing_isolation_cells]


}





########################################
#           CONNECT P/G                #
########################################


## Connect Power & Ground for non-MV and MV-mode


if { $CUSTOM_CONNECT_PG_NETS_SCRIPT != ""} {

  if {[file exists [which $CUSTOM_CONNECT_PG_NETS_SCRIPT]]} {
    source -echo $CUSTOM_CONNECT_PG_NETS_SCRIPT 
  }

} else {
 if {$MV_MODE == "NONE"} {

  derive_pg_connection -create_net
  derive_pg_connection -reconnect


 }

 if {$MV_MODE == "NONUPF"} {
  source -echo mv_pg_connect.tcl 
 }

 if {$MV_MODE == "UPF"} {

  derive_pg_connection -create_net -verbose
  derive_pg_connection -reconnect -verbose
  redirect -file $REPORTS_DIR/route_opt.mv {check_mv_design -power_nets -verbose}
  save_upf $RESULTS_DIR/$ICC_ROUTE_OPT_CEL.upf

 }
}




redirect -file $REPORTS_DIR/$ICC_ROUTE_OPT_CEL.qor {report_qor}
redirect -file $REPORTS_DIR/$ICC_ROUTE_OPT_CEL.con {report_constraints}


if {$MCMM_MODE } {

  set_active_scenarios [lminus [all_scenarios] $ICC_MCMM_CTS_SCENARIO] 
  update_timing 
  redirect -file $REPORTS_DIR/$ICC_ROUTE_OPT_CEL.max.tim {report_timing -crosstalk_delta -scenario [all_scenarios] -capacitance -transition_time -input_pins -nets -delay max}
  redirect -file $REPORTS_DIR/$ICC_ROUTE_OPT_CEL.min.tim {report_timing -crosstalk_delta -scenario [all_scenarios] -capacitance -transition_time -input_pins -nets -delay min}

} else {

 redirect -file $REPORTS_DIR/$ICC_ROUTE_OPT_CEL.max.tim {report_timing -crosstalk_delta -capacitance -transition_time -input_pins -nets -delay max}
 redirect -file $REPORTS_DIR/$ICC_ROUTE_OPT_CEL.min.tim {report_timing -crosstalk_delta -capacitance -transition_time -input_pins -nets -delay min}

}




## Create Snapshot and Save
create_qor_snapshot -timing -constraint -congestion -clock_tree -route -name $ICC_ROUTE_OPT_CEL
save_mw_cel -as $ICC_ROUTE_OPT_CEL
redirect -file $REPORTS_DIR/$ICC_ROUTE_OPT_CEL.qor_snapshot.rpt {report_qor_snapshot}



exit