mirror of https://github.com/efabless/caravel.git
54 lines
1.7 KiB
Bash
54 lines
1.7 KiB
Bash
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#!/bin/sh
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#
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#-------------------------------------------------------------------
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# add_isosub_layers.sh --
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#
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# This script adds isolated substrate layers to two circuits
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# gpio_control_block and mgmt_protect that require it.
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#
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# This annotation is easy to do by hand. However, the script
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# formalizes the procedure and serves as a reminder that it needs
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# to be done because the synthesis tools have no way to understand
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# when the substrate has implied separate regions, or what to do
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# about it. Without the isolated substrate region markers, the
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# layout extraction will merge the ground domains and the design
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# will fail LVS.
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#
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# NOTE: This script is specific to the existing caravel chip
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# layout for MPW-7. If either block is resynthesized, the positions
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# of the isolated ground areas need to be determined and this script
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# needs to be updated to match.
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#
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# Written by Tim Edwards for MPW-7 10/17/2022
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#-------------------------------------------------------------------
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echo ${PDK_ROOT:=/usr/share/pdk} > /dev/null
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echo ${PDK:=sky130A} > /dev/null
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echo "Annotating gpio_control_block layout with isolated substrate"
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magic -dnull -noconsole -rcfile ${PDK_ROOT}/${PDK}/libs.tech/magic/${PDK}.magicrc << EOF
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drc off
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snap internal
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load gpio_control_block
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tech unlock *
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box values 1096 1592 2678 4514
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paint isosub
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writeall force gpio_control_block
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quit -noprompt
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EOF
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echo "Annotating mgmt_protect layout with isolated substrate"
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magic -dnull -noconsole -rcfile ${PDK_ROOT}/${PDK}/libs.tech/magic/${PDK}.magicrc << EOF
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drc off
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snap internal
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load mgmt_protect
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tech unlock *
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box values 65700 6898 86564 9130
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paint isosub
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box values 136230 10086 205344 13664
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paint isosub
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writeall force mgmt_protect
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quit -noprompt
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EOF
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