mirror of https://github.com/openXC7/prjxray.git
120 lines
2.7 KiB
Python
120 lines
2.7 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2017-2020 The Project X-Ray Authors.
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#
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# Use of this source code is governed by a ISC-style
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# license that can be found in the LICENSE file or at
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# https://opensource.org/licenses/ISC
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#
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# SPDX-License-Identifier: ISC
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import json
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import io
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import os
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import random
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import re
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random.seed(int(os.getenv("SEED"), 16))
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from prjxray import util
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from prjxray import lut_maker
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from prjxray import verilog
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from prjxray.db import Database
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def gen_sites():
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db = Database(util.get_db_root(), util.get_part())
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grid = db.grid()
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for tile_name in sorted(grid.tiles()):
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loc = grid.loc_of_tilename(tile_name)
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gridinfo = grid.gridinfo_at_loc(loc)
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if gridinfo.tile_type.endswith("_SING"):
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continue
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# Y9 tiles have frame address 1 frame higher than the rest
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# Need to investigate what is so special about them
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if tile_name.endswith("Y9"):
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continue
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sites = []
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for site_name, site_type in gridinfo.sites.items():
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if site_type == 'IDELAYE2':
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yield tile_name, site_name
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def write_params(params):
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pinstr = 'tile,isone,site\n'
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for vals in params:
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pinstr += ','.join(map(str, vals)) + '\n'
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open('params.csv', 'w').write(pinstr)
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def use_idelay(p, luts, connects):
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print(
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'''
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wire idelay_{site};
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(* KEEP, DONT_TOUCH, LOC = "{site}" *)
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IDELAYE2 #(
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.HIGH_PERFORMANCE_MODE("{param}"),
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.DELAY_SRC("DATAIN")
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) idelay_site_{site} (
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.DATAIN({onet}),
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.DATAOUT(idelay_{site})
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);
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assign {net} = idelay_{site};
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'''.format(
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onet=luts.get_next_output_net(),
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net=luts.get_next_input_net(),
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param="TRUE" if p['isone'] else "FALSE",
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**p),
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file=connects)
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def run():
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luts = lut_maker.LutMaker()
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connects = io.StringIO()
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tile_params = []
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params = []
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sites = sorted(list(gen_sites()))
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for idx, ((tile, site), isone) in enumerate(zip(
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sites, util.gen_fuzz_states(len(sites)))):
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p = {}
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p['tile'] = tile
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p['site'] = site
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p['isone'] = isone
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params.append(p)
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tile_params.append((tile, p['isone'], site))
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write_params(tile_params)
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print('''
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module top();
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''')
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# Always output a LUT6 to make placer happy.
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print('''
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(* KEEP, DONT_TOUCH *)
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LUT6 dummy_lut();
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''')
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# Need IDELAYCTRL for IDEALAYs
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print('''
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(* KEEP, DONT_TOUCH *)
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IDELAYCTRL();
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''')
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for p in params:
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use_idelay(p, luts, connects)
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for l in luts.create_wires_and_luts():
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print(l)
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print(connects.getvalue())
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print("endmodule")
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if __name__ == '__main__':
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run()
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