caravel/sdc/caravan.sdc

set ::env(IO_PCT) "0.2"
set ::env(SYNTH_DRIVING_CELL) "sky130_fd_sc_hd__inv_1"
set ::env(SYNTH_DRIVING_CELL_PIN) "Y"
set ::env(SYNTH_MAX_FANOUT) "5"
set ::env(SYNTH_CAP_LOAD) "33.442"
set ::env(SYNTH_TIMING_DERATE) 0.05
set ::env(SYNTH_CLOCK_UNCERTAINITY) 0.25
set ::env(SYNTH_CLOCK_TRANSITION) 0.15

## MASTER CLOCKS
create_clock [get_ports {"clock"} ] -name "clock"  -period 25
create_clock -name __VIRTUAL_CLK__ -period 25

## INPUT/OUTPUT DELAYS
set input_delay_value 1
set output_delay_value [expr 25 * $::env(IO_PCT)]
puts "\[INFO\]: Setting output delay to: $output_delay_value"
puts "\[INFO\]: Setting input delay to: $input_delay_value"

set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {gpio}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[0]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[1]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[2]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[3]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[4]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[5]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[6]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[7]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[8]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[9]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[10]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[11]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[12]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[13]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[14]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[15]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[16]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[17]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[18]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[19]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[20]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[21]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[22]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[23]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[24]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[25]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[26]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[27]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[28]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[29]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[30]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[31]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[32]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[33]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[34]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[35]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[36]}]
set_input_delay $input_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {mprj_io[37]}]


set_output_delay $output_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {flash_csb}]
set_output_delay $output_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {flash_clk}]
set_output_delay $output_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {flash_io0}]
set_output_delay $output_delay_value  -clock [get_clocks {clock}] -add_delay [get_ports {flash_io1}]

set_max_fanout $::env(SYNTH_MAX_FANOUT) [current_design]

# TODO set this as parameter
set_driving_cell -lib_cell $::env(SYNTH_DRIVING_CELL) -pin $::env(SYNTH_DRIVING_CELL_PIN) [all_inputs]
set cap_load [expr $::env(SYNTH_CAP_LOAD) / 1000.0]
puts "\[INFO\]: Setting load to: $cap_load"
set_load  $cap_load [all_outputs]

puts "\[INFO\]: Setting timing derate to: [expr {$::env(SYNTH_TIMING_DERATE) * 10}] %"
set_timing_derate -early [expr {1-$::env(SYNTH_TIMING_DERATE)}]
set_timing_derate -late [expr {1+$::env(SYNTH_TIMING_DERATE)}]

puts "\[INFO\]: Setting clock uncertainity to: $::env(SYNTH_CLOCK_UNCERTAINITY)"
set_clock_uncertainty $::env(SYNTH_CLOCK_UNCERTAINITY) [get_clocks {clock}]

puts "\[INFO\]: Setting clock transition to: $::env(SYNTH_CLOCK_TRANSITION)"
set_clock_transition $::env(SYNTH_CLOCK_TRANSITION) [get_clocks {clock}]