sky130/openlane/common_pdn.tcl

# Power nets
set ::power_nets "VDD"
set ::ground_nets "VSS"

set ::macro_blockage_layer_list "li1 met1 met2 met3 met4 met5"

pdngen::specify_grid stdcell {
    name grid
    rails {
	    met1 {width 0.48 pitch $::env(PLACE_SITE_HEIGHT) offset 0}
    }
    straps {
	    met4 {width 1.6 pitch $::env(FP_PDN_VPITCH) offset $::env(FP_PDN_VOFFSET)}
	    met5 {width 1.6 pitch $::env(FP_PDN_HPITCH) offset $::env(FP_PDN_HOFFSET)}
    }
    connect {{met1 met4} {met4 met5}}
}

pdngen::specify_grid macro {
    orient {R0 R180 MX MY R90 R270 MXR90 MYR90}
    power_pins "VDDE"
    ground_pins "VSSE"
    blockages "li1 met1 met2 met3 met4 met5" 
    straps { 
    } 
    connect { }
}

set ::halo 0

# Metal layer for rails on every row
set ::rails_mlayer "met1" ;

# POWER or GROUND #Std. cell rails starting with power or ground rails at the bottom of the core area
set ::rails_start_with "POWER" ;

# POWER or GROUND #Upper metal stripes starting with power or ground rails at the left/bottom of the core area
set ::stripes_start_with "POWER" ;