hardening.md

Hardening the multi project harness

The strategy is:

• harden each submodule with a config like this one for ws2812

  • the key config is set ::env(DESIGN_IS_CORE) 0 which makes sure that metal5 is not used for routing

• copy all the gds and lef files to multi_project_harness/macros

  • this is done with update_macros.sh

• harden top level macro that includes all the subprojects

  • copy [multi_project_harness.v] to the openlane src/ directory
  • use this config
  • have to modify multi_project_harness.v to add:
    • `include blackbox.v
    • `define MPRJ_IO_PADS 38

• copy this gds and lef file to the caravel user project directory and run the caravel makefile to add the macro

  • don't know how to do this part
  • make in caravel/openlane
  • current is 1800 x 1800 um but mostly empty space

Current results for top level macro

with auto placing macros

    tritonRoute_violations :                  180
          Short_violations :                  170
         MetSpc_violations :                   10
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                 1126
        antenna_violations :                  110
          lvs_total_errors :                  102

with hand placed macros

    tritonRoute_violations :                    3
          Short_violations :                    3
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                  922
        antenna_violations :                  102
          lvs_total_errors :                    3

slightly wider spaced macros

    tritonRoute_violations :                    0
          Short_violations :                    0
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                  501
        antenna_violations :                  105
          lvs_total_errors :                    0

Magic violations:

Metal3 > 3um spacing to unrelated m3 < 0.4um (met3.3d)
All nwells must contain metal-connected N+ taps (nwell.4)
Metal1 > 3um spacing to unrelated m1 < 0.28um (met1.3b)
Metal2 > 3um spacing to unrelated m2 < 0.28um (met2.3b)

Current results for submodules

ws2812 : DESIGN=ws2812 RUN_DATE=30-11_11-18

    tritonRoute_violations :                    0
          Short_violations :                    0
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                   14
        antenna_violations :                    0
          lvs_total_errors :                    0

• All nwells must contain metal-connected N+ taps (nwell.4)

vga_clock : DESIGN=vga_clock RUN_DATE=27-11_14-37

    tritonRoute_violations :                    0
          Short_violations :                    0
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                   10
        antenna_violations :                    0
          lvs_total_errors :                    0

• All nwells must contain metal-connected N+ taps (nwell.4)

seven_segment_seconds : DESIGN=seven_segment_seconds RUN_DATE=27-11_14-39

    tritonRoute_violations :                    0
          Short_violations :                    0
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                    6
        antenna_violations :                    0
          lvs_total_errors :                    0

• All nwells must contain metal-connected N+ taps (nwell.4)

spinet5 : DESIGN=spinet5 RUN_DATE=30-11_11-37

    tritonRoute_violations :                    0
          Short_violations :                    0
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                   32
        antenna_violations :                    1
          lvs_total_errors :                    0

• All nwells must contain metal-connected N+ taps (nwell.4)

asic_freq : DESIGN=asic_freq RUN_DATE=30-11_11-49

    tritonRoute_violations :                    0
          Short_violations :                    0
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                   48
        antenna_violations :                    2
          lvs_total_errors :                    0

• All nwells must contain metal-connected N+ taps (nwell.4)

watch_hhmm : DESIGN=watch_hhmm RUN_DATE=27-11_14-41

    tritonRoute_violations :                    0
          Short_violations :                    0
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                    5
        antenna_violations :                    0
          lvs_total_errors :                    0

• All nwells must contain metal-connected N+ taps (nwell.4)

challenge : DESIGN=challenge RUN_DATE=30-11_10-45

    tritonRoute_violations :                    0
          Short_violations :                    0
         MetSpc_violations :                    0
        OffGrid_violations :                    0
        MinHole_violations :                    0
          Other_violations :                    0
          Magic_violations :                    7
        antenna_violations :                    0
          lvs_total_errors :                    0

• All nwells must contain metal-connected N+ taps (nwell.4)