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refactor: separate tech specific code

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Make the codebase more PDK-agnostic by moving tech-specific code to `tech.py` and tech specific files (e.g. def files, tile_sizes.yaml) to `tech/<pdkname>` subdirectory.
This commit is contained in:
Uri Shaked
2025-09-13 20:28:48 +03:00
parent c67d54ee54
commit 28fd25f684
57 changed files with 264 additions and 271 deletions
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tech/sky130A/def/analog/magic_init_project.tcl
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# SPDX-License-Identifier: Apache-2.0
# Copyright (c) 2024-2025 Tiny Tapeout LTD
# Author: Uri Shaked
# Description: This script initializes a new Magic project for an analog design on Tiny Tapeout.
# Important: before running this script, download the the .def file from
# https://raw.githubusercontent.com/TinyTapeout/tt-support-tools/main/tech/sky130A/def/analog/tt_analog_1x2.def
# Change the settings below to match your design:
# ------------------------------------------------
set TOP_LEVEL_CELL tt_um_analog_example
set TEMPLATE_FILE tt_analog_1x2.def
set POWER_STRIPE_WIDTH 2um ;# The minimum width is 1.2um
# Power stripes: NET name, x position. You can add additional power stripes for each net, as needed.
set POWER_STRIPES {
VDPWR 1um
VGND 4um
}
# If you use the 3v3 template, uncomment the line below:
#lappend POWER_STRIPES VAPWR 7um
# Read in the pin positions
# -------------------------
def read $TEMPLATE_FILE
cellname rename tt_um_template $TOP_LEVEL_CELL
# Draw the power stripes
# --------------------------------
proc draw_power_stripe {name x} {
global POWER_STRIPE_WIDTH
box $x 5um $x 220.76um
box width $POWER_STRIPE_WIDTH
paint met4
label $name FreeSans 0.25u -met4
port make
port use [expr {$name eq "VGND" ? "ground" : "power"}]
port class bidirectional
port connections n s e w
}
# You can extra power stripes, as you need.
foreach {name x} $POWER_STRIPES {
puts "Drawing power stripe $name at $x"
draw_power_stripe $name $x
}
# Save the layout and export GDS/LEF
# ----------------------------------
save ${TOP_LEVEL_CELL}.mag
file mkdir gds
gds write gds/${TOP_LEVEL_CELL}.gds
file mkdir lef
lef write lef/${TOP_LEVEL_CELL}.lef -hide -pinonly