Hi, I have LVS errors in the precheck. I checked the report and log files. As far as I understand,...

Burak Aykenar

10/30/2023, 12:11 PM

Hi, I have LVS errors in the precheck. I checked the report and log files. As far as I understand, sky130 FFs cause some mismatch: sky130_fd_sc_hd__dfxtp_1 sky130_fd_sc_hd__dfrtp_1 I attached precheck LVS related log and report files. The design has 195 macro instantiations in the wrapper and only pin connections Thanks

lvs.report LVS_check.log lvs.unflattened

lvs.log

Marwan Abbas

10/30/2023, 12:12 PM

Looks like you haven't included all macros inside your design

Marwan Abbas

10/30/2023, 12:14 PM

These are the macros not included:

Copy code

cby_1__1_ is a black box in the source
cbx_1__6_ is a black box in the source
sb_6__0_ is a black box in the source
grid_clb is a black box in the source
cbx_1__1_ is a black box in the source
grid_io_top is a black box in the source
sb_1__6_ is a black box in the source
cbx_1__0_ is a black box in the source
sb_1__1_ is a black box in the source
grid_io_bottom is a black box in the source
sb_1__0_ is a black box in the source
grid_io_right is a black box in the source
cby_0__1_ is a black box in the source
cby_6__1_ is a black box in the source
sb_0__6_ is a black box in the source
grid_io_left is a black box in the source
sb_0__1_ is a black box in the source
constant_assignments is a black box in the source
sb_6__6_ is a black box in the source
sb_0__0_ is a black box in the source
sb_6__1_ is a black box in the source

To do so, you can point to them in

lvs/user_project_wrapper/lvs_config.json

file

Burak Aykenar

10/30/2023, 12:29 PM

Thanks @Marwan Abbas I am not familiar with lvs_config So I have to add them only in LVS_VERILOG_FILES in lvs_config right?

Marwan Abbas

10/30/2023, 12:52 PM

Yes, you can find the documentation here https://github.com/efabless/mpw_precheck/blob/main/checks/be_checks/README.md

Burak Aykenar

10/31/2023, 8:30 PM

Thanks

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