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wtf bd95f8c190 try sky130 3 years ago
..
src try sky130 3 years ago
config.mk try sky130 3 years ago
constraint.sdc try sky130 3 years ago
readme.md try sky130 3 years ago

readme.md

https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts/tree/master/flow

create dir and add sources

cd ../../..
make DESIGN_CONFIG=./designs/sky130hd/a2p/config.mk

docs

https://openroad.readthedocs.io/en/latest/user/UserGuide.html#option-1-rtl-to-gds-flow

http://www.clifford.at/yosys/files/yosys_manual.pdf

https://people.eecs.berkeley.edu/~alanmi/abc/

35a3f1e4e3/doc/OpenSTA.pdf

steps

  1. initial synth/timing
  • initialize floorplan (initialize_floorplan)
  • gate_resizer (multiple commands)
    • can set estimated wire rc per layer
    • can add buffers on I/O
    • repairs fanouts/caps/etc.
    • STA can run before and/or after this
  • OpenSTA (sta)
  1. full PD
  • macro place (macro_placement)
  • tapcell/endcap (tapcell)
  • global placement (global_placement)
  • detailed placement (legalize_placement)
  • CTS (clock_tree_synthesis)
  • global routing (fast_route) the unit hangs appear here in report_power
  • detailed routing (detailed_route)