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https://github.com/retroSoC/retroSoC.git
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maksyuki
7a7c0b2973
- Introduced common setup script for Yosys () to manage global variables and configurations. - Added output filtering script () to enhance log readability. - Created technology initialization script () for handling different PDKs. - Developed main synthesis script () to orchestrate the synthesis flow using Yosys. - Added a configuration makefile () for synthesis settings. - Updated Yosys makefile () to integrate new scripts and configurations. - Adjusted paths in and RTL filelists to reflect new directory structure under . - Modified various scripts and test files to accommodate the new PDK paths and ensure compatibility. - Enhanced warning normalization in the analysis script to preserve PDK signatures.
71 lines
1.7 KiB
Plaintext
71 lines
1.7 KiB
Plaintext
# Copyright (c) 2022 ETH Zurich and University of Bologna.
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# Licensed under the Apache License, Version 2.0, see LICENSE for details.
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# SPDX-License-Identifier: Apache-2.0
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#
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# Authors:
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# - Philippe Sauter <phsauter@iis.ee.ethz.ch>
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#
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# Optimization script utilizing 'Lazy Mans Synthesis'
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# Requires the library of 6-input records (src/rec6Lib...)
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# https://people.eecs.berkeley.edu/~alanmi/publications/2012/iccad12_lms.pdf
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print_stats
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# strash can fix some yosys-convertion edge-cases, good idea to run first
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strash
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rec_start3 {REC_AIG}
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# main optimization iteration:
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alias &opt_iter "&st; &if -y -K 6; &syn2; &if -K 6; &st; &b"
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# &if -y -K 6; &syn2; &if -K 6, see LMS paper
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# &dc2 AIG rewriting (greedy minimization)
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# &b balance structure for depth
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# &st structural hashing
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# &dc compute structural choices
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# &nf select choice and map to tech
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# &ps print statistics
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# mapping iteration
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alias &map_iter "&st; &nf {D}; &ps"
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# initial mapping iteration
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&get -n
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echo "Initial network:"
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&ps
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echo "High effort delay optimization..."
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&opt_iter; &opt_iter; &ps;
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&opt_iter; &opt_iter; &ps;
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&opt_iter; &opt_iter; &ps;
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&opt_iter; &opt_iter; &ps;
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&put
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# according to https://people.eecs.berkeley.edu/~alanmi/abc/
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# it can take up to 10-ish iterations for convergence
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# in my experience it seems to get 99% there after 5-6 with a lower runtime
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&get -n
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echo "Opt+mapping Iterations..."
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&opt_iter; &map_iter;
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&opt_iter; &map_iter;
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&opt_iter; &map_iter;
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&opt_iter; &map_iter;
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&opt_iter; &map_iter;
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&opt_iter; &map_iter;
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&opt_iter; &map_iter;
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&opt_iter; &map_iter;
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&put
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topo
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stime
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echo "buffering for delay and fanout..."
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buffer -p
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echo "resizing cells..."
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upsize {D}
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dnsize {D}
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upsize {D}
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dnsize {D}
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echo "Final timing:"
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stime
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