| # 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 |
| |
| # Allow override of PDK path from environment variable PDKPATH. Failing |
| # that, fall back on definitions of PDK_ROOT and PDK. If either of those |
| # fails, substitute a default. If PDKPATH has been specified, then get |
| # PDK_VARIANT from the tail of PDKPATH. |
| |
| if {[catch {set PDKPATH $env(PDKPATH)}]} { |
| if {[catch {set PDK_ROOT $env(PDK_ROOT)}]} { |
| set PDK_ROOT /usr/share/pdk |
| } |
| if {[catch {set PDK_VARIANT $env(PDK)}]} { |
| set PDK_VARIANT sky130A |
| } |
| set PDKPATH ${PDK_ROOT}/${PDK_VARIANT} |
| } else { |
| set PDK_VARIANT [file tail ${PDKPATH}] |
| } |
| |
| puts stdout "Sourcing design .magicrc for technology $PDK_VARIANT ..." |
| |
| # Put grid on 0.005 pitch. This is important, as some commands don't |
| # rescale the grid automatically (such as lef read?). |
| |
| set scalefac [tech lambda] |
| if {[lindex $scalefac 1] < 2} { |
| scalegrid 1 2 |
| } |
| |
| drc off |
| drc euclidean on |
| |
| # loading technology |
| tech load $PDKPATH/libs.tech/magic/${PDK_VARIANT}.tech |
| |
| # load device generator |
| source $PDKPATH/libs.tech/magic/${PDK_VARIANT}.tcl |
| |
| # load bind keys (optional) |
| # source $PDKPATH/libs.tech/magic/${PDK_VARIANT}-BindKeys |
| |
| # set units to lambda grid |
| snap lambda |
| |
| # set sky130 standard power, ground, and substrate names |
| set VDD VPWR |
| set GND VGND |
| set SUB VSUBS |
| |
| # Allow override of type of magic library views used, "mag" or "maglef", |
| # from environment variable MAGTYPE |
| |
| if {[catch {set MAGTYPE $env(MAGTYPE)}]} { |
| set MAGTYPE maglef |
| } |
| |
| path search [concat "../$MAGTYPE" [path search]] |
| |
| |
| # add path to reference cells |
| if {[file isdir ${PDKPATH}/libs.ref/${MAGTYPE}]} { |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_pr |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_io |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_sc_hd |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_sc_hdll |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_sc_hs |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_sc_hvl |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_sc_lp |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_sc_ls |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_fd_sc_ms |
| addpath ${PDKPATH}/libs.ref/${MAGTYPE}/sky130_osu_sc |
| addpath ${PDKPATH}/libs.ref/mag/sky130_ml_xx_hd |
| } else { |
| addpath ${PDKPATH}/libs.ref/sky130_fd_pr/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_fd_io/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_fd_sc_hd/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_fd_sc_hdll/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_fd_sc_hs/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_fd_sc_hvl/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_fd_sc_lp/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_fd_sc_ls/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_fd_sc_ms/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_osu_sc/${MAGTYPE} |
| addpath ${PDKPATH}/libs.ref/sky130_ml_xx_hd/mag |
| } |
| |
| addpath hexdigits |
| addpath ../subcells/simple_por/mag |
| |
| # add path to GDS cells |
| |
| # add path to IP from catalog. This procedure defined in the PDK script. |
| catch {magic::query_mylib_ip} |
| # add path to local IP from user design space. Defined in the PDK script. |
| catch {magic::query_my_projects} |