TCL-programming

Problem statement:

Read the libraries files one by one
Read the verilog files one by one
Link the design
Read the SDC file
Create directories to save the generated report file for the different verilog files

Sub task –

Renaming the report files The report files are named in the following format (PVTCorner_Post_DFlevel_rpttype.rpt) eg ff100C1v65_Post_synthesis_minmax.rpt
Generation of html table
From the generated report – Extract the a. Hold and setup slack b. Start-point and end point for both the setup and hold case and thereafter generate a table consisting the above values
Combine the start-point and endpoint values of setup and hold and placed it into two different columns
Add the WNS,TNS and FEP values

Implementation

Initially riscv_sta.tcl file is written for Post_synthesis netlist STA analysis using opensource tool OpenSTA across the different skywater130 timing libraries. The file is executed using the sta <tclfile> command. The generated report is saved in Post_Synthesis directory.
Next an html table is created from the generated report file whose code is available in riscv_rpt_table.tcl file and build_report.html is its html file, automatically generated from the tcl code. For execuction of the code tclsh <tcl file2> command is used.
Next the script is further modified for simultaneous sta analysis of all the PnR netlists available. riscv_conf.tclis the modified tcl file used in sta analysis of the different netlist use in PnR flow of RISCV [Note: The netlists and the spef file are generated using openLANE flow]. The generated reports are saved in their respective folder. Apart from the minmax report, wns, tns and fep(setup) report are also generated.
The script riscv_rpt_table_V2.tcl is the modified script where tns and wns values are added to the html table. The Post_CTS and Post_Layout table is also generated.

Check out the following link for teaser of the video tutorial I created for the above work and this link for its detail description.