| yosys -import |
| if { [info procs read_sdc] == {} } { plugin -i sdc } |
| yosys -import ;# ingest plugin commands |
| |
| read_verilog $::env(DESIGN_TOP).v |
| read_verilog -specify -lib -D_EXPLICIT_CARRY +/xilinx/cells_sim.v |
| read_verilog -lib +/xilinx/cells_xtra.v |
| hierarchy -check -auto-top |
| |
| # Start flow after library reading |
| synth_xilinx -flatten -abc9 -nosrl -nodsp -iopad -noclkbuf -run prepare:check |
| |
| # Read the design timing constraints |
| read_sdc $::env(DESIGN_TOP).input.sdc |
| |
| # Propagate the clocks |
| propagate_clocks |
| |
| # Write out the SDC file after the clock propagation step |
| write_sdc [test_output_path "pll_div.sdc"] |
