# SPDX-FileCopyrightText: 2020 Efabless Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# SPDX-License-Identifier: Apache-2.0

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

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

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

    # This is a hack to connect the power straps only for the first domain.
    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