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#!/usr/bin/tcsh -f
#----------------------------------------------------------
# Placement script using GrayWolf
#
# This script assumes the existence of the pre-GrayWolf
# ".cel" and ".par" files. It will run GrayWolf for the
# placement.
#----------------------------------------------------------
# Tim Edwards, 5/16/11, for Open Circuit Design
# Modified April 2013 for use with qflow
# Modified November 2013 for congestion feedback
#----------------------------------------------------------
if ($#argv < 2) then
echo Usage: placement.sh <project_path> <source_name>
exit 1
endif
# Split out options from the main arguments
set argline=(`getopt "kdf" $argv[1-]`)
set cmdargs=`echo "$argline" | awk 'BEGIN {FS = "-- "} END {print $2}'`
set argc=`echo $cmdargs | wc -w`
if ($argc == 2) then
set argv1=`echo $cmdargs | cut -d' ' -f1`
set argv2=`echo $cmdargs | cut -d' ' -f2`
else
echo Usage: placement.sh [options] <project_path> <source_name>
echo where
echo <project_path> is the name of the project directory containing
echo a file called qflow_vars.sh.
echo <source_name> is the root name of the verilog file, and
echo [options] are:
echo -k keep working files
echo -d generate DEF file for routing
echo -f final placement. Don't run if routing succeeded
echo
echo Options to specific tools can be specified with the following
echo variables in project_vars.sh:
echo
echo
exit 1
endif
set keep=0
set makedef=0
set final = 0
foreach option (${argline})
switch (${option})
case -k:
set keep=1
breaksw
case -d:
set makedef=1
breaksw
case -f:
set final=1
breaksw
case --:
break
endsw
end
set projectpath=$argv1
set sourcename=$argv2
set rootname=${sourcename:h}
# This script is called with the first argument <project_path>, which should
# have file "qflow_vars.sh". Get all of our standard variable definitions
# from the qflow_vars.sh file.
if (! -f ${projectpath}/qflow_vars.sh ) then
echo "Error: Cannot find file qflow_vars.sh in path ${projectpath}"
exit 1
endif
source ${projectpath}/qflow_vars.sh
source ${techdir}/${techname}.sh
cd ${projectpath}
if (-f project_vars.sh) then
source project_vars.sh
endif
# Get power and ground bus names
if (-f ${synthdir}/${rootname}_powerground) then
source ${synthdir}/${rootname}_powerground
endif
# Prepend techdir to each leffile unless leffile begins with "/"
set lefpath=""
foreach f (${leffile})
set abspath=`echo ${f} | cut -c1`
if ( "${abspath}" == "/" ) then
set p=${leffile}
else
set p=${techdir}/${leffile}
endif
set lefpath="${lefpath} $p"
end
# Prepend techdir to techleffile unless techleffile begins with "/"
set abspath=`echo ${techleffile} | cut -c1`
if ( "${abspath}" == "/" ) then
set techlefpath=${techleffile}
else
set techlefpath=${techdir}/${techleffile}
endif
# Prepend techdir to each spicefile unless spicefile begins with "/"
set spicepath=""
foreach f (${spicefile})
set abspath=`echo ${f} | cut -c1`
if ( "${abspath}" == "/" ) then
set p=${spicefile}
else
set p=${techdir}/${spicefile}
endif
set spicepath="${spicepath} $p"
end
if (!($?logdir)) then
set logdir=${projectpath}/log
endif
mkdir -p ${logdir}
set lastlog=${logdir}/synth.log
set synthlog=${logdir}/place.log
rm -f ${synthlog} >& /dev/null
rm -f ${logdir}/sta.log >& /dev/null
rm -f ${logdir}/route.log >& /dev/null
rm -f ${logdir}/post_sta.log >& /dev/null
rm -f ${logdir}/migrate.log >& /dev/null
rm -f ${logdir}/drc.log >& /dev/null
rm -f ${logdir}/lvs.log >& /dev/null
rm -f ${logdir}/gdsii.log >& /dev/null
touch ${synthlog}
set date=`date`
echo "Qflow placement logfile created on $date" > ${synthlog}
#----------------------------------------------------------
# Done with initialization
#----------------------------------------------------------
# Check if last line of log file says "error condition"
set errcond = `tail -1 ${lastlog} | grep "error condition" | wc -l`
if ( ${errcond} == 1 ) then
echo "Synthesis flow stopped on error condition. Placement will not proceed"
echo "until error condition is cleared."
exit 1
endif
#---------------------------------------------------
# Create .info file from qrouter
#---------------------------------------------------
cd ${layoutdir}
# First prepare a simple .cfg file that can be used to point qrouter
# to the LEF files when generating layer information using the "-i" option.
# This also contains the scaling units used in the .cel and .def files.
#------------------------------------------------------------------
# Determine the version number and availability of scripting
# in qrouter.
#------------------------------------------------------------------
set version=`${bindir}/qrouter -v 0 -h | tail -1`
set major=`echo $version | cut -d. -f1`
set minor=`echo $version | cut -d. -f2`
set subv=`echo $version | cut -d. -f3`
set scripting=`echo $version | cut -d. -f4`
# Create the initial (bootstrap) configuration file
if ( $scripting == "T" ) then
if ( "$techleffile" == "" ) then
echo "read_lef ${lefpath}" > ${rootname}.cfg
else
echo "read_lef ${techlefpath}" > ${rootname}.cfg
endif
else
if ( "$techleffile" == "" ) then
echo "lef ${lefpath}" > ${rootname}.cfg
else
echo "lef ${techlefpath}" > ${rootname}.cfg
endif
endif
${bindir}/qrouter -i ${rootname}.info -c ${rootname}.cfg
#---------------------------------------------------------------------
# Spot check: Did qrouter produce file ${rootname}.info?
#---------------------------------------------------------------------
if ( !( -f ${rootname}.info || \
( -f ${rootname}.info && -M ${rootname}.info < -M ${rootname}.pin ))) then
echo "qrouter (-i) failure: No file ${rootname}.info." |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped due to error condition." >> ${synthlog}
exit 1
endif
# Pull scale units from the .info file. Default units are centimicrons.
set units=`cat ${rootname}.info | grep units | cut -d' ' -f3`
if ( "${units}" == "" ) then
set units=100
endif
#-------------------------------------------------------------------------
# Create the .cel file for GrayWolf
#-------------------------------------------------------------------------
cd ${projectpath}
if ( "$techleffile" == "" ) then
set lefoptions=""
set addsoptions=""
else
set lefoptions="--lef ${techlefpath}"
set addsoptions="-techlef ${techlefpath}"
endif
set lefoptions="${lefoptions} --lef ${lefpath}"
# Pass additional .lef files to blif2cel.tcl from the hard macros list
if ( ${?hard_macros} ) then
foreach macro_path ( $hard_macros )
foreach file ( `ls ${sourcedir}/${macro_path}` )
if ( ${file:e} == "lef" ) then
set lefoptions="${lefoptions} --hard-macro ${sourcedir}/${macro_path}/${file}"
set addsoptions="${addsoptions} -hardlef ${sourcedir}/${macro_path}/${file}"
endif
end
end
endif
if ( !( ${?blif2cel_options} ) ) then
set blif2cel_options = ""
endif
echo "Running blif2cel to generate input files for graywolf" |& tee -a ${synthlog}
echo "blif2cel.tcl --blif ${synthdir}/${rootname}.blif ${lefoptions} --cel ${layoutdir}/${rootname}.cel ${blif2cel_options}" |& tee -a ${synthlog}
${scriptdir}/blif2cel.tcl --blif ${synthdir}/${rootname}.blif \
${lefoptions} --cel ${layoutdir}/${rootname}.cel ${blif2cel_options} >>& ${synthlog}
set errcond = $status
if ( ${errcond} != 0 ) then
echo "blif2cel.tcl failed with exit status ${errcond}" |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped on error condition." >>& ${synthlog}
exit 1
endif
#---------------------------------------------------------------------
# Spot check: Did blif2cel produce file ${rootname}.cel?
#---------------------------------------------------------------------
if ( !( -f ${layoutdir}/${rootname}.cel || \
( -f ${layoutdir}/${rootname}.cel && -M ${layoutdir}/${rootname}.cel \
< -M ${rootname}.blif ))) then
echo "blif2cel failure: No file ${rootname}.cel." |& tee -a ${synthlog}
echo "blif2cel was called with arguments: ${synthdir}/${rootname}.blif "
echo " ${lefpath} ${layoutdir}/${rootname}.cel"
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped due to error condition." >> ${synthlog}
exit 1
endif
#---------------------------------------------------------------------
# Move to the layout directory
#---------------------------------------------------------------------
cd ${layoutdir}
#---------------------------------------------------------------------
# Check if a .cel1 file exists and needs to be prepended to .cel
# This file may contain hard macro definitions that assert blockages
# to the placement.
#---------------------------------------------------------------------
if ( -f ${rootname}.cel1 ) then
echo "Preparing layout blockages from ${rootname}.cel1" |& tee -a ${synthlog}
mv ${rootname}.cel ${rootname}_tmp.cel
cp ${rootname}.cel1 ${rootname}.cel
cat ${rootname}_tmp.cel >> ${rootname}.cel
rm -f ${rootname}_tmp.cel
else
echo -n "No ${rootname}.cel1 file found for project. . . " \
|& tee -a ${synthlog}
echo "no partial blockages to apply to layout." |& tee -a ${synthlog}
endif
#-------------------------------------------------------------------------
# If placement option "initial_density" is set, run the decongest
# script. This will annotate the .cel file with fill cells to pad
# out the area to the specified density.
#-------------------------------------------------------------------------
# Set value ${fillers} to be equal either to a single cell name if
# only one of (decapcell, antennacell, fillcell) is defined, or a
# comma-separated triplet. If only one is defined, then "fillcell"
# is set to that name for those scripts that only handle one kind of
# fill cell.
# Make sure all cell types are defined, but an empty string if not used.
if ( ! ${?fillcell} ) then
set fillcell = ""
endif
if ( ! ${?decapcell} ) then
set decapcell = ""
endif
if ( ! ${?antennacell} ) then
set antennacell = ""
endif
if ("x$fillcell" != "x") then
if ("x$decapcell" != "x") then
if ("x$antennacell" != "x") then
set fillers = "${fillcell},${decapcell},${antennacell}"
else
set fillers = "${fillcell},${decapcell},"
endif
else if ("x$antennacell" != "x") then
set fillers = "${fillcell},,${antennacell}"
else
set fillers = "${fillcell}"
endif
else
if ("x$decapcell" != "x") then
if ("x$antennacell" != "x") then
set fillers = ",${decapcell},${antennacell}"
else
set fillers = ",${decapcell},"
endif
set fillcell = "${decapcell}"
else if ("x$antennacell" != "x") then
set fillers = ",,${antennacell}"
set fillcell = "${antennacell}"
else
# There is no fill cell, which is likely to produce poor results.
echo "Warning: No fill cell types are defined in the tech setup script."
echo "This is likely to produce poor layout and/or poor routing results."
set fillers = ""
set fillcell = ""
endif
endif
if ( ${?initial_density} ) then
echo "Running decongest to set initial density of ${initial_density}" \
|& tee -a ${synthlog}
if ( ${?fill_ratios} ) then
echo "decongest.tcl ${rootname} ${lefpath} ${fillers} ${initial_density} ${fill_ratios} --units=${units}" \
|& tee -a ${synthlog}
${scriptdir}/decongest.tcl ${rootname} ${lefpath} \
${fillers} ${initial_density} ${fill_ratios} --units=${units} |& tee -a ${synthlog}
else
echo "decongest.tcl ${rootname} ${lefpath} ${fillers} ${initial_density} --units=${units}" \
|& tee -a ${synthlog}
${scriptdir}/decongest.tcl ${rootname} ${lefpath} \
${fillers} ${initial_density} --units=${units} |& tee -a ${synthlog}
endif
set errcond = $status
if ( ${errcond} != 0 ) then
echo "decongest.tcl failed with exit status ${errcond}" |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped on error condition." >>& ${synthlog}
exit 1
endif
cp ${rootname}.cel ${rootname}.cel.bak
mv ${rootname}.acel ${rootname}.cel
endif
# Check if a .acel file exists. This file is produced by qrouter and
# its existance indicates that qrouter is passing back congestion
# information to GrayWolf for a final placement pass using fill to
# break up congested areas.
if ( -f ${rootname}.acel && ( -M ${rootname}.acel >= -M ${rootname}.cel )) then
cp ${rootname}.cel ${rootname}.cel.bak
mv ${rootname}.acel ${rootname}.cel
set final = 1
else
if ( ${final} == 1 ) then
# Called for final time, but routing already succeeded, so just exit
echo "First attempt routing succeeded; final placement iteration is unnecessary."
exit 2
endif
endif
# Check if a .cel2 file exists and needs to be appended to .cel
# If the .cel2 file is newer than .cel, then truncate .cel and
# re-append.
if ( -f ${rootname}.cel2 ) then
echo "Preparing pin placement hints from ${rootname}.cel2" |& tee -a ${synthlog}
if ( `grep -c padgroup ${rootname}.cel` == "0" ) then
cat ${rootname}.cel2 >> ${rootname}.cel
else if ( -M ${rootname}.cel2 > -M ${rootname}.cel ) then
# Truncate .cel file to first line containing "padgroup"
cat ${rootname}.cel | sed -e "/padgroup/Q" > ${rootname}_tmp.cel
cat ${rootname}_tmp.cel ${rootname}.cel2 > ${rootname}.cel
rm -f ${rootname}_tmp.cel
endif
else
echo -n "No ${rootname}.cel2 file found for project. . . " \
|& tee -a ${synthlog}
echo "continuing without pin placement hints" |& tee -a ${synthlog}
endif
#-----------------------------------------------
# 1) Run GrayWolf
#-----------------------------------------------
if ( !( ${?graywolf_options} )) then
if ( !( ${?DISPLAY} )) then
set graywolf_options = "-n"
else
set graywolf_options = ""
endif
endif
echo "Running GrayWolf placement" |& tee -a ${synthlog}
echo "graywolf ${graywolf_options} $rootname" |& tee -a ${synthlog}
${bindir}/graywolf ${graywolf_options} $rootname >>& ${synthlog}
set errcond = $status
if ( ${errcond} != 0 ) then
echo "graywolf failed with exit status ${errcond}" |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped on error condition." >>& ${synthlog}
exit 1
endif
#---------------------------------------------------------------------
# Spot check: Did GrayWolf produce file ${rootname}.pin?
#---------------------------------------------------------------------
if ( !( -f ${rootname}.pin || \
( -f ${rootname}.pin && -M ${rootname}.pin < -M ${rootname}.cel ))) then
echo "GrayWolf failure: No file ${rootname}.pin." |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped due to error condition." >> ${synthlog}
exit 1
endif
#---------------------------------------------------
# Remove blockage hardcells defined in .cel1
#---------------------------------------------------
# Remove any existing .obs file as place2def.tcl will append to it.
rm -f ${rootname}.obs
if ( (-f ${rootname}.cel1) && (-f ${scriptdir}/removeblocks.tcl) ) then
echo "Running removeblocks to remove partical blockage references" \
|& tee -a ${synthlog}
echo "removeblocks.tcl ${rootname}" \
|& tee -a ${synthlog}
${scriptdir}/removeblocks.tcl ${rootname} >>& ${synthlog}
set errcond = $status
if ( ${errcond} != 0 ) then
echo "removeblocks.tcl failed with exit status ${errcond}" |& tee -a ${synthlog}
echo "Ignoring. . . this may cause errors downstream." |& tee -a ${synthlog}
endif
endif
#---------------------------------------------------
# 2) Prepare DEF and .cfg files for qrouter
#---------------------------------------------------
if ($makedef == 1) then
# Run getfillcell to determine which cell should be used for fill to
# match the width specified for feedthroughs in the .par file. If
# nothing is returned by getfillcell, then either feedthroughs have
# been disabled, or else we'll try passing $fillcell directly to
# place2def
echo "Running getfillcell to determine cell to use for fill." |& tee -a ${synthlog}
echo "getfillcell.tcl $rootname ${lefpath} $fillcell" |& tee -a ${synthlog}
set usefillcell = `${scriptdir}/getfillcell.tcl $rootname \
${lefpath} $fillcell | grep fill= | cut -d= -f2`
if ( "${usefillcell}" == "" ) then
set usefillcell = $fillcell
endif
echo "Using cell ${usefillcell} for fill" |& tee -a ${synthlog}
# Set up antenna pin option, if it is defined, then use user-defined
# options for place2def, if they are defined.
if ( !( ${?antennapin_in} )) then
set antenna_opt = ""
else
if ( !( ${?antennacell} )) then
set antenna_opt = ""
else
if ( "x${antennacell}" == "x" ) then
set antenna_opt = ""
else
set antenna_opt = "antennapin=${antennapin_in} antennacell=${antennacell}"
endif
endif
endif
if ( !( ${?place2def_options} )) then
set place2def_options = "$antenna_opt"
else
set place2def_options = "$antenna_opt $place2def_options"
endif
# Run place2def to turn the GrayWolf output into a DEF file
echo "Running place2def to translate graywolf output to DEF format." \
|& tee -a ${synthlog}
if ( ${?route_layers} ) then
echo "place2def.tcl $rootname $usefillcell ${route_layers} ${place2def_options}" \
|& tee -a ${synthlog}
${scriptdir}/place2def.tcl $rootname $usefillcell ${route_layers} \
${place2def_options} >>& ${synthlog}
set errcond = $status
if ( ${errcond} != 0 ) then
echo "place2def.tcl failed with exit status ${errcond}" |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped on error condition." >>& ${synthlog}
exit 1
endif
else
echo "place2def.tcl $rootname $usefillcell ${place2def_options}" \
|& tee -a ${synthlog}
${scriptdir}/place2def.tcl $rootname $usefillcell ${place2def_options} \
>>& ${synthlog}
endif
#---------------------------------------------------------------------
# Spot check: Did place2def produce file ${rootname}.def?
#---------------------------------------------------------------------
if ( !( -f ${rootname}.def || \
( -f ${rootname}.def && -M ${rootname}.def < -M ${rootname}.pin ))) then
echo "place2def failure: No file ${rootname}.def." |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped due to error condition." >> ${synthlog}
exit 1
endif
#---------------------------------------------------------------------
# Add spacer cells to create a straight border on the right side
#---------------------------------------------------------------------
if ( !(${?nospacers}) && (-f ${scriptdir}/addspacers.tcl) ) then
# Fill will use just the fillcell for padding under power buses
# and on the edges (to do: refine this to use other spacer types
# if the width options are more flexible).
if ( !( ${?addspacers_options} )) then
set addspacers_options = "${addsoptions}"
else
set addspacers_options = "${addsoptions} ${addspacers_options}"
endif
echo "Running addspacers to generate power stripes and align cell right edge" \
|& tee -a ${synthlog}
echo "addspacers.tcl ${addspacers_options} ${rootname} ${lefpath} ${fillcell}" \
|& tee -a ${synthlog}
${scriptdir}/addspacers.tcl ${addspacers_options} \
${rootname} ${lefpath} ${fillcell} >>& ${synthlog}
set errcond = $status
if ( ${errcond} != 0 ) then
echo "addspacers.tcl failed with exit status ${errcond}" |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped on error condition." >>& ${synthlog}
exit 1
endif
if ( -f ${rootname}_filled.def ) then
mv ${rootname}_filled.def ${rootname}.def
endif
if ( -f ${rootname}.obsx ) then
# If addspacers annotated the .obs (obstruction) file, then
# overwrite the original.
mv ${rootname}.obsx ${rootname}.obs
endif
endif
#---------------------------------------------------------------------
# Run pin position adjustment script to make sure that pins avoid the
# power buses and are actually close to their respective connections
# in the digital core, which is something that graywolf has serious
# problems ensuring. Also puts pins on a double-pitch spacing to make
# it much easier for the router to reach them.
#---------------------------------------------------------------------
if ( -f ${scriptdir}/arrangepins.tcl ) then
if ( !( ${?arrangepins_options} )) then
set arrangepins_options = ""
endif
echo "Running arrangepins to adjust pin positions for optimal routing." \
|& tee -a ${synthlog}
echo "arrangepins.tcl ${arrangepins_options} ${rootname}" |& tee -a ${synthlog}
${scriptdir}/arrangepins.tcl ${arrangepins_options} ${rootname} \
|& tee -a ${synthlog}
# Check if the _mod.def output file was generated, and if so, rename it
# back to plain .def.
if ( !( -f ${rootname}_mod.def || ( -f ${rootname}_mode.def && \
-M ${rootname}_mod.def < -M ${rootname}.def ))) then
echo "Error (ignoring):"
echo " arrangepins.tcl failed to generate file ${rootname}_mod.def."
else
mv ${rootname}_mod.def ${rootname}.def
endif
endif
# Copy the .def file to a backup called "unroute"
cp ${rootname}.def ${rootname}_unroute.def
# If the user didn't specify a number of layers for routing as part of
# the project variables, then the info file created by qrouter will have
# as many lines as there are route layers defined in the technology LEF
# file.
if ( !( ${?route_layers} )) then
set route_layers = `cat ${rootname}.info | grep -e horizontal -e vertical | wc -l`
endif
# Create the main configuration file
# Variables "via_pattern" (none, normal, invert), "via_stacks",
# and "via_use" can be specified in the tech script, and are
# appended to the qrouter configuration file. via_stacks defaults
# to 2 if not specified. It can be overridden from the user's .cfg2
# file.
if (${scripting} == "T") then
echo "# qrouter runtime script for project ${rootname}" > ${rootname}.cfg
echo "" >> ${rootname}.cfg
echo "verbose 1" >> ${rootname}.cfg
if ( "$techleffile" != "" ) then
echo "read_lef ${techlefpath}" >> ${rootname}.cfg
endif
echo "read_lef ${lefpath}" >> ${rootname}.cfg
if ( ${?hard_macros} ) then
foreach macro_path ( $hard_macros )
foreach file ( `ls ${sourcedir}/${macro_path}` )
if ( ${file:e} == "lef" ) then
echo "read_lef ${sourcedir}/${macro_path}/${file}" >> ${rootname}.cfg
endif
end
end
endif
echo "catch {layers ${route_layers}}" >> ${rootname}.cfg
if ( ${?via_use} ) then
echo "" >> ${rootname}.cfg
echo "via use ${via_use}" >> ${rootname}.cfg
endif
if ( ${?via_pattern} ) then
echo "" >> ${rootname}.cfg
echo "via pattern ${via_pattern}" >> ${rootname}.cfg
endif
if (! ${?via_stacks} ) then
set via_stacks="all"
endif
echo "via stack ${via_stacks}" >> ${rootname}.cfg
echo "vdd $vddnet" >> ${rootname}.cfg
echo "gnd $gndnet" >> ${rootname}.cfg
else
echo "# qrouter configuration for project ${rootname}" > ${rootname}.cfg
echo "" >> ${rootname}.cfg
if ( "$techleffile" != "" ) then
echo "lef ${techlefpath}" >> ${rootname}.cfg
endif
echo "lef ${lefpath}" >> ${rootname}.cfg
if ( ${?hard_macros} ) then
foreach macro_path ( $hard_macros )
foreach file ( `ls ${sourcedir}/${macro_path}` )
if ( ${file:e} == "lef" ) then
echo "lef ${sourcedir}/${macro_path}/${file}" >> ${rootname}.cfg
endif
end
end
endif
echo "num_layers ${route_layers}" >> ${rootname}.cfg
if ( ${?via_pattern} ) then
echo "" >> ${rootname}.cfg
echo "via pattern ${via_pattern}" >> ${rootname}.cfg
endif
if ( ${?via_stacks} ) then
if (${via_stacks} == "none") then
echo "no stack" >> ${rootname}.cfg
else
if (${via_stacks} == "all") then
echo "stack ${route_layers}" >> ${rootname}.cfg
else
echo "stack ${via_stacks}" >> ${rootname}.cfg
endif
endif
endif
endif
# Add obstruction fence around design, created by place2def.tcl
# and modified by addspacers.tcl
if ( -f ${rootname}.obs ) then
cat ${rootname}.obs >> ${rootname}.cfg
endif
# Scripted version continues with the read-in of the DEF file
if (${scripting} == "T") then
if ("x$antennacell" != "x") then
echo "catch {qrouter::antenna init ${antennacell}}" >> ${rootname}.cfg
endif
echo "read_def ${rootname}.def" >> ${rootname}.cfg
endif
# If there is a file called ${rootname}.cfg2, then append it to the
# ${rootname}.cfg file. It will be used to define all routing behavior.
# Otherwise, if using scripting, then append the appropriate routing
# command or procedure based on whether this is a pre-congestion
# estimate of routing or the final routing pass.
if ( -f ${rootname}.cfg2 ) then
cat ${rootname}.cfg2 >> ${rootname}.cfg
else
if (${scripting} == "T") then
echo "qrouter::standard_route ${rootname}_route.def false" >> ${rootname}.cfg
# write_delays folded into standard_route in qrouter version 1.4.21.
if (${major} == 1 && ${minor} == 4 && ${subv} < 21) then
echo "qrouter::write_delays ${rootname}_route.rc" >> ${rootname}.cfg
endif
# Qrouter will drop into the interpreter on failure, so force a
# quit command to make sure that qrouter actually exits.
echo "quit" >> ${rootname}.cfg
endif
endif
#------------------------------------------------------------------
# Automatic optimization of buffer tree placement causes the
# original BLIF netlist, with tentative buffer assignments, to
# be invalid. Use the blifanno.tcl script to back-annotate the
# correct assignments into the original BLIF netlist, then
# use that BLIF netlist to regenerate the SPICE and RTL verilog
# netlists.
#------------------------------------------------------------------
echo "blifanno.tcl ${synthdir}/${rootname}.blif ${rootname}.def ${synthdir}/${rootname}_anno.blif" \
|& tee -a ${synthlog}
${scriptdir}/blifanno.tcl ${synthdir}/${rootname}.blif ${rootname}.def \
${synthdir}/${rootname}_anno.blif >>& ${synthlog}
set errcond = $status
if ( ${errcond} != 0 ) then
echo "blifanno.tcl failed with exit status ${errcond}" |& tee -a ${synthlog}
echo "Premature exit." |& tee -a ${synthlog}
echo "Synthesis flow stopped on error condition." >>& ${synthlog}
exit 1
endif
#------------------------------------------------------------------
# Spot check: Did blifanno.tcl produce an output file?
#------------------------------------------------------------------
if ( !( -f ${synthdir}/${rootname}_anno.blif )) then
echo "blifanno.tcl failure: No file ${rootname}_anno.blif." \
|& tee -a ${synthlog}
echo "RTL verilog and SPICE netlists may be invalid if there" \
|& tee -a ${synthlog}
echo "were buffer trees optimized by placement." |& tee -a ${synthlog}
echo "Synthesis flow continuing, condition not fatal." >> ${synthlog}
else
echo "" >> ${synthlog}
echo "Generating RTL verilog and SPICE netlist file in directory" \
|& tee -a ${synthlog}
echo " ${synthdir}" |& tee -a ${synthlog}
echo "Files:" |& tee -a ${synthlog}
echo " Verilog: ${synthdir}/${rootname}.rtl.v" |& tee -a ${synthlog}
echo " Verilog: ${synthdir}/${rootname}.rtlnopwr.v" |& tee -a ${synthlog}
echo " Verilog: ${synthdir}/${rootname}.rtlbb.v" |& tee -a ${synthlog}
echo " Spice: ${synthdir}/${rootname}.spc" |& tee -a ${synthlog}
echo "" >> ${synthlog}
cd ${synthdir}
#------------------------------------------------------------------
# Copy the original rtl.v and rtlnopwr.v for use in comparison of
# pre- and post-placement netlists.
#------------------------------------------------------------------
echo "Copying ${rootname}.rtl.v, ${rootname}.rtlnopwr.v, and ${rootname}.rtlbb.v to backups"
cp ${rootname}.rtl.v ${rootname}_synth.rtl.v
cp ${rootname}.rtlnopwr.v ${rootname}_synth.rtlnopwr.v
cp ${rootname}.rtlbb.v ${rootname}_synth.rtlbb.v
echo "Running blif2Verilog." |& tee -a ${synthlog}
${bindir}/blif2Verilog -c -v ${vddnet} -g ${gndnet} \
${rootname}_anno.blif > ${rootname}.rtl.v
${bindir}/blif2Verilog -c -p -v ${vddnet} -g ${gndnet} \
${rootname}_anno.blif > ${rootname}.rtlnopwr.v
${bindir}/blif2Verilog -c -b -p -n -v ${vddnet} -g ${gndnet} \
${rootname}_anno.blif > ${rootname}.rtlbb.v
echo "Running blif2BSpice." |& tee -a ${synthlog}
${bindir}/blif2BSpice -i -p ${vddnet} -g ${gndnet} -l \
${spicepath} ${rootname}_anno.blif \
> ${rootname}.spc
#------------------------------------------------------------------
# Spot check: Did blif2Verilog or blif2BSpice exit with an error?
#------------------------------------------------------------------
if ( !( -f ${rootname}.rtl.v || ( -f ${rootname}.rtl.v && \
-M ${rootname}.rtl.v < -M ${rootname}_anno.blif ))) then
echo "blif2Verilog failure: No file ${rootname}.rtl.v created." \
|& tee -a ${synthlog}
endif
if ( !( -f ${rootname}.rtlnopwr.v || ( -f ${rootname}.rtlnopwr.v && \
-M ${rootname}.rtlnopwr.v < -M ${rootname}_anno.blif ))) then
echo "blif2Verilog failure: No file ${rootname}.rtlnopwr.v created." \
|& tee -a ${synthlog}
endif
if ( !( -f ${rootname}.rtlbb.v || ( -f ${rootname}.rtlbb.v && \
-M ${rootname}.rtlbb.v < -M ${rootname}_anno.blif ))) then
echo "blif2Verilog failure: No file ${rootname}.rtlbb.v created." \
|& tee -a ${synthlog}
endif
if ( !( -f ${rootname}.spc || ( -f ${rootname}.spc && \
-M ${rootname}.spc < -M ${rootname}_anno.blif ))) then
echo "blif2BSpice failure: No file ${rootname}.spc created." \
|& tee -a ${synthlog}
endif
# Return to the layout directory
cd ${layoutdir}
endif
endif
#---------------------------------------------------
# 4) Remove working files (except for the main
# output files .pin, .pl1, and .pl2
#---------------------------------------------------
if ($keep == 0) then
rm -f ${rootname}.blk ${rootname}.gen ${rootname}.gsav ${rootname}.history
rm -f ${rootname}.log ${rootname}.mcel ${rootname}.mdat ${rootname}.mgeo
rm -f ${rootname}.mout ${rootname}.mpin ${rootname}.mpth ${rootname}.msav
rm -f ${rootname}.mver ${rootname}.mvio ${rootname}.stat ${rootname}.out
rm -f ${rootname}.pth ${rootname}.sav ${rootname}.scel ${rootname}.txt
endif
#------------------------------------------------------------
# Done!
#------------------------------------------------------------
set endtime = `date`
echo "Placement script ended on $endtime" >> $synthlog
exit 0
|