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# 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
# Power nets
set ::power_nets $::env(_VDD_NET_NAME)
set ::ground_nets $::env(_GND_NET_NAME)
set stdcell {
name grid
core_ring {
met5 {width $::env(_WIDTH) spacing $::env(_SPACING) core_offset $::env(_H_OFFSET)}
met4 {width $::env(_WIDTH) spacing $::env(_SPACING) core_offset $::env(_V_OFFSET)}
}
rails {
}
connect {{met4 met5}}
}
if { $::env(_WITH_STRAPS) } {
dict append stdcell straps {
met4 {width $::env(_WIDTH) pitch $::env(_V_PITCH) offset $::env(_V_PDN_OFFSET)}
met5 {width $::env(_WIDTH) pitch $::env(_H_PITCH) offset $::env(_H_PDN_OFFSET)}
}
}
pdngen::specify_grid stdcell $stdcell
pdngen::specify_grid macro {
instance "obs_core_obs"
power_pins $::env(_VDD_NET_NAME)
ground_pins $::env(_GND_NET_NAME)
blockages "li1 met1 met2 met3 met4 met5"
straps {
}
connect {}
}
pdngen::specify_grid macro {
power_pins $::env(_VDD_NET_NAME)
ground_pins $::env(_GND_NET_NAME)
blockages "li1 met1 met2 met3 met4"
straps {
}
connect {}
}
set ::halo 10
# 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" ;