set XCOps(liboverride) 1
global PDK_ROOT
if {[catch {set PDK_ROOT $env(PDK_ROOT)}]} {
    set PDK_ROOT /usr/local/share/pdk
}
config search libraries .:$PDK_ROOT/sky130B/libs.tech/xcircuit:$XCIRCUIT_LIB_DIR
library make generic
library 1 load generic
library make ngspice
library 2 load ngspice
library make sky130B_analog
library 3 load sky130_fd_pr
library make sky130B_digital
library 4 load sky130_fd_sc_hd
#
# Load math libraries
namespace path {::tcl::mathop ::tcl::mathfunc}

# Deal with SPICE-type unit suffixes
proc unit_val {unit} {
    if {$unit == "T"} {
	return 1.0E9
    } elseif {$unit == "G"} {
	return 1.0E9
    } elseif {$unit == "M"} {
	return 1.0E6
    } elseif {$unit == "k"} {
	return 1.0E3
    } elseif {$unit == "m"} {
	return 1.0E-3 
    } elseif {$unit == "u"} {
	return 1.0E-6
    } elseif {$unit == "n"} {
	return 1.0E-9
    } elseif {$unit == "p"} {
	return 1.0E-12
    } elseif {$unit == "f"} {
	return 1.0E-15
    } elseif {$unit == "a"} {
	return 1.0E-18
    } else {
	return 1.0
    }
}

#-----------------------------------------------
# Procedures used with sky130_fd_pr library
#-----------------------------------------------

# Return MiM cap capacitance value in fF
proc get_mim_value {l w mult} {
    return [* $l $w $mult]
}

# Return high-res poly resistor value in kOhms
proc get_xres_value {l name} {
    case $name in \
    res_high_po_0p35 {set rval [* 2.0 [/ $l 0.35]]} \
    res_high_po_0p69 {set rval [* 2.0 [/ $l 0.69]]} \
    res_high_po_1p41 {set rval [* 2.0 [/ $l 1.41]]} \
    res_high_po_2p85 {set rval [* 2.0 [/ $l 2.85]]} \
    res_high_po_5p73 {set rval [* 2.0 [/ $l 5.73]]} \
    default {set rval 0}
    return [format "%1.3f" $rval]
}

# Get VPP cap values according to model (values in fF)
proc get_vpp_noshield_value {name mult} {
    case $name in \
    02p4x04p6_m1m2_noshield {set cval 4.627} \
    02p7x06p1_m1m2m3m4_shieldl1_fingercap {set cval 12.549} \
    02p7x11p1_m1m2m3m4_shieldl1_fingercap {set cval 12.399} \
    02p7x21p1_m1m2m3m4_shieldl1_fingercap {set cval 46.896} \
    02p7x41p1_m1m2m3m4_shieldl1_fingercap {set cval 93.188} \
    02p9x06p1_m1m2m3m4_shieldl1_fingercap2 {set cval 13.125} \
    04p4x04p6_l1m1m2_noshield {set cval 10.281} \
    04p4x04p6_m1m2_noshield {set cval 8.150} \
    04p4x04p6_m1m2_noshield_o2 {set cval 9.841} \
    04p4x04p6_m1m2_shieldl1 {set cval 8.879} \
    04p4x04p6_m1m2m3_shieldl1 {set cval 11.117} \
    08p6x07p8_l1m1m2_noshield {set cval 41.828} \
    08p6x07p8_m1m2_noshield {set cval 35.826} \
    08p6x07p8_m1m2_shieldl1 {set cval 34.782} \
    08p6x07p8_m1m2m3_shieldl1 {set cval 43.728} \
    11p3x11p3_m1m2m3m4_shieldl1_wafflecap {set cval 112.497} \
    11p5x11p7_l1m1m2_noshield {set cval 96.064} \
    11p5x11p7_m1m2_noshield {set cval 75.963} \
    11p5x11p7_m1m2_shieldl1 {set cval 78.124} \
    11p5x11p7_m1m2m3_shieldl1 {set cval 98.696} \
    11p5x11p7_m1m4_noshield {set cval 111.693} \
    44p7x23p1_pol1m1m2m3m4m5_noshield {set cval 1495.053} \
    default {set cval 0}
    return [* $cval $mult]
}

proc get_vpp_shield_value {name mult} {
    case $name in \
    04p4x04p6_m1m2m3_shieldl1m5_floatm4 {set cval 11.443} \
    04p4x04p6_m1m2m3_shieldl1m5_floatm4_top {set cval 12.098} \
    05p9x05p9_m1m2m3m4_shieldl1_wafflecap {set cval 28.577} \
    06p8x06p1_l1m1m2m3_shieldpom4 {set cval 36.122} \
    06p8x06p1_l1m1m2m3_shieldpom4_top {set cval 36.666} \
    06p8x06p1_m1m2m3_shieldl1m4 {set cval 28.220} \
    06p8x06p1_m1m2m3_shieldl1m4_top {set cval 27.723} \
    08p6x07p8_m1m2m3_shieldl1m5_floatm4 {set cval 43.643} \
    08p6x07p8_m1m2m3_shieldl1m5_floatm4_top {set 6.363} \
    11p3x11p8_l1m1m2m3m4_shieldm5_nhvtop {set cval 183.472} \
    11p5x11p7_l1m1m2m3_shieldm4 {set cval 123.258} \
    11p5x11p7_l1m1m2m3_shieldm4_top {set cval 493.018} \
    11p5x11p7_l1m1m2m3_shieldpom4 {set cval 128.617} \
    11p5x11p7_l1m1m2m3_shieldpom4_top {set cval 516.838} \
    11p5x11p7_l1m1m2m3m4_shieldm5 {set cval 141.412} \
    11p5x11p7_l1m1m2m3m4_shieldm5_top {set cval 565.641} \
    11p5x11p7_l1m1m2m3m4_shieldpom5 {set cval 147.117} \
    11p5x11p7_l1m1m2m3m4_shieldpom5_top {set cval 588.113} \
    11p5x11p7_m1m2m3_shieldl1m5_floatm4 {set cval 100.308} \
    11p5x11p7_m1m2m3_shieldl1m5_floatm4_top {set cval 78.913} \
    11p5x11p7_m1m2m3m4_shieldl1m5 {set cval 120.658} \
    11p5x11p7_m1m2m3m4_shieldl1m5_top {set cval 482.574} \
    11p5x11p7_m1m2m3m4_shieldm5 {set cval 111.909} \
    default {set cval 0}
    return [* $cval $mult]
}