openlane/user_project_wrapper/gen_pdn.tcl

read_lef $::env(MERGED_LEF_UNPADDED)
read_def $::env(CURRENT_DEF)

# Should be 1.6?
set ::env(_SPACING) 1.7
set ::env(_WIDTH) 3

set power_domains [list {vccd1 vssd1} {vccd2 vssd2} {vdda1 vssa1} {vdda2 vssa2}]

set ::env(_VDD_NET_NAME) vccd1
set ::env(_GND_NET_NAME) vssd1

set ::env(_V_OFFSET) 14
set ::env(_H_OFFSET) $::env(_V_OFFSET)
set ::env(_V_PITCH) 180
set ::env(_H_PITCH) 180
set ::env(_V_PDN_OFFSET) 0
set ::env(_H_PDN_OFFSET) 0

# From Slack PDN chat:
set ::env(CONNECT_GRIDS) 1

foreach domain $power_domains {
	set ::env(_VDD_NET_NAME) [lindex $domain 0]
	set ::env(_GND_NET_NAME) [lindex $domain 1]

	pdngen $::env(PDN_CFG) -verbose

	set ::env(CONNECT_GRIDS) 0

	set ::env(_V_OFFSET) \
		[expr $::env(_V_OFFSET) + 2*($::env(_WIDTH)+$::env(_SPACING))]
	set ::env(_H_OFFSET) \
		[expr $::env(_H_OFFSET) + 2*($::env(_WIDTH)+$::env(_SPACING))]
	set ::env(_V_PDN_OFFSET) [expr $::env(_V_PDN_OFFSET)+6*$::env(_WIDTH)]
	set ::env(_H_PDN_OFFSET) [expr $::env(_H_PDN_OFFSET)+6*$::env(_WIDTH)]
}

write_def $::env(pdn_tmp_file_tag).def