Adding Routing blockage around boundary of block

Hi All,

I would like share the the script to create the routing blockage around the boundary of block.

 Note :

1) This is technology specific script.

2) You have edit the metal layer name as per your requirement.

Proc is as follows :

 proc createRouteBlkBoundray {width} {

## Create rectilinear floorplan shape

#

set fplanPolygon [dbShape -output polygon [dbGet top.fplan.boxes]]

#

# Create routing blockage around inside of block boundary with width $blkgWidth

#

set blkgWidth $width

set sizeValue [expr 0 - $blkgWidth]

set shrunkBox [dbShape $fplanPolygon SIZE $sizeValue]

set donut [dbShape $fplanPolygon ANDNOT $shrunkBox]

      foreach rect $donut {

   set xl [lindex $rect 0]

   set yl [lindex $rect 1]

   set xu [lindex $rect 2]

   set yu [lindex $rect 3]

   if [ expr $xl > $xu ] {

    set xdiff [expr $xl - $xu] 

   } else {

    set xdiff [expr $xu - $xl]

   }

   if [ expr $yl > $yu ] {

    set ydiff [expr $yl - $yu] 

   } else {

    set ydiff [expr $yu - $yl]

   }

   if {[ expr $xdiff - $width] == "0" } {

    #set layer "vertical"

               #  -layer needs to change as per your technology or as per your requirement 

    createRouteBlk -box $rect -layer {M3 M5}

   } else {

    #set layer "horizonal"

              #  -layer needs to change as per your technology or as per your requirement  

    createRouteBlk -box $rect -layer {M1 M2 M4 M6}

   }

      }

}

Usage is as follows :

 #createRouteBlkBoundray <width in um>

In case of 0.5 micron, type below 

 createRouteBlkBoundray 0.5

Regards,

Gangadhar Naik