Running pack, Place and Route tools

The eblif file generated during the synthesis is used for pack, place and route along with device information, pcf and the sdc file.

Syntax:

ql_symbiflow -compile -src <source complete path> -d <device> -t <top module name> -v <verilog files> -p <pcf file> -P <Package file> -s <SDC file>

The output files dumped will be:

<TOP>.net : Once packing is complete.
<TOP>.place : Placer file from VPR
<TOP>.route  : Router file from VPR

One can refer to the pack.log, placer.log, router.log for more information related to each tool.

cd <INSTALL_PATH>/quicklogic-arch-defs/tests/counter_16bit
ql_symbiflow -compile -src $PWD -d ql-eos-s3 -t top -v counter_16bit.v -p chandalar.pcf -P PD64 -s counter_16bit.sdc

The above command will also run synthesis if it was not run before.

To Generate Various files during compile, use the below options Common command with just output file change:

ql_symbiflow -compile -src $PWD -d ql-eos-s3 -t top -v counter_16bit.v -p chandalar.pcf -P PD64 -s counter_16bit.sdc -dump jlink/post_verilog/header

To Generate the Post-Layout Verilog file

This is the Verilog file used for the functional simulation to verify the Place and Route output.

Syntax:

ql_symbiflow -compile -src <source complete path> -d <device> -t <top module name> -v <verilog files> -p <pcf file> -P <Package file> -s <SDC file> -dump post_verilog

The output files dumped will be:

top_bit.v : Post layout Verilog file (for verifying the configuration bits)
top_post_synthesis.v : Post layout Verilog file (for timing simulation)
top_post_synthesis.sdf : SDF file (for timing simulation)

ql_symbiflow -compile -src $PWD -d ql-eos-s3 -t top -v counter_16bit.v -p chandalar.pcf -P PD64 -s counter_16bit.sdc -dump post_verilog

The Timing analysis refer the files report_timing.hold.rpt, report_timing.setup.rpt and top.log inside the build folder

For the counter design below is the timing report from the top.log file:

Hold Worst Negative Slack (hWNS): 0 ns
Hold Total Negative Slack (hTNS): 0 ns
Setup Worst Negative Slack (sWNS): -35.2295 ns
Setup Total Negative Slack (sTNS): -1062.29 ns
Final critical path: 35.2295 ns, Fmax: 28.3853 MHz