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yosys/techlibs/xilinx/cells_xtra.py

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Python
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#!/usr/bin/env python3
from argparse import ArgumentParser
from io import StringIO
from enum import Enum, auto
import os.path
import sys
class Cell:
def __init__(self, name, keep=False, port_attrs={}):
self.name = name
self.keep = keep
self.port_attrs = port_attrs
CELLS = [
# Design elements types listed in Xilinx UG953
Cell('BSCANE2', keep=True),
# Cell('BUFG', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFGCE', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFGCE_1', port_attrs={'O': ['clkbuf_driver']}),
#Cell('BUFGCTRL', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFGMUX', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFGMUX_1', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFGMUX_CTRL', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFH', port_attrs={'O': ['clkbuf_driver']}),
#Cell('BUFHCE', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFIO', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFMR', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFMRCE', port_attrs={'O': ['clkbuf_driver']}),
Cell('BUFR', port_attrs={'O': ['clkbuf_driver']}),
Cell('CAPTUREE2', keep=True),
# Cell('CARRY4'),
Cell('CFGLUT5', port_attrs={'CLK': ['clkbuf_sink']}),
Cell('DCIRESET', keep=True),
Cell('DNA_PORT'),
Cell('DSP48E1', port_attrs={'CLK': ['clkbuf_sink']}),
Cell('EFUSE_USR'),
# Cell('FDCE'),
# Cell('FDPE'),
# Cell('FDRE'),
# Cell('FDSE'),
Cell('FIFO18E1', port_attrs={'RDCLK': ['clkbuf_sink'], 'WRCLK': ['clkbuf_sink']}),
Cell('FIFO36E1', port_attrs={'RDCLK': ['clkbuf_sink'], 'WRCLK': ['clkbuf_sink']}),
Cell('FRAME_ECCE2'),
Cell('GTHE2_CHANNEL'),
Cell('GTHE2_COMMON'),
Cell('GTPE2_CHANNEL'),
Cell('GTPE2_COMMON'),
Cell('GTXE2_CHANNEL'),
Cell('GTXE2_COMMON'),
# Cell('IBUF', port_attrs={'I': ['iopad_external_pin']}),
Cell('IBUF_IBUFDISABLE', port_attrs={'I': ['iopad_external_pin']}),
Cell('IBUF_INTERMDISABLE', port_attrs={'I': ['iopad_external_pin']}),
Cell('IBUFDS', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('IBUFDS_DIFF_OUT', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('IBUFDS_DIFF_OUT_IBUFDISABLE', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('IBUFDS_DIFF_OUT_INTERMDISABLE', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('IBUFDS_GTE2', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('IBUFDS_IBUFDISABLE', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('IBUFDS_INTERMDISABLE', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('IBUFG', port_attrs={'I': ['iopad_external_pin']}),
Cell('IBUFGDS', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('IBUFGDS_DIFF_OUT', port_attrs={'I': ['iopad_external_pin'], 'IB': ['iopad_external_pin']}),
Cell('ICAPE2', keep=True),
Cell('IDDR', port_attrs={'C': ['clkbuf_sink']}),
Cell('IDDR_2CLK', port_attrs={'C': ['clkbuf_sink'], 'CB': ['clkbuf_sink']}),
Cell('IDELAYCTRL', keep=True, port_attrs={'REFCLK': ['clkbuf_sink']}),
Cell('IDELAYE2', port_attrs={'C': ['clkbuf_sink']}),
Cell('IN_FIFO', port_attrs={'RDCLK': ['clkbuf_sink'], 'WRCLK': ['clkbuf_sink']}),
Cell('IOBUF', port_attrs={'IO': ['iopad_external_pin']}),
Cell('IOBUF_DCIEN', port_attrs={'IO': ['iopad_external_pin']}),
Cell('IOBUF_INTERMDISABLE', port_attrs={'IO': ['iopad_external_pin']}),
Cell('IOBUFDS', port_attrs={'IO': ['iopad_external_pin']}),
Cell('IOBUFDS_DCIEN', port_attrs={'IO': ['iopad_external_pin'], 'IOB': ['iopad_external_pin']}),
Cell('IOBUFDS_DIFF_OUT', port_attrs={'IO': ['iopad_external_pin'], 'IOB': ['iopad_external_pin']}),
Cell('IOBUFDS_DIFF_OUT_DCIEN', port_attrs={'IO': ['iopad_external_pin'], 'IOB': ['iopad_external_pin']}),
Cell('IOBUFDS_DIFF_OUT_INTERMDISABLE', port_attrs={'IO': ['iopad_external_pin'], 'IOB': ['iopad_external_pin']}),
Cell('ISERDESE2', port_attrs={
'CLK': ['clkbuf_sink'],
'CLKB': ['clkbuf_sink'],
'OCLK': ['clkbuf_sink'],
'OCLKB': ['clkbuf_sink'],
'CLKDIV': ['clkbuf_sink'],
'CLKDIVP': ['clkbuf_sink'],
}),
Cell('KEEPER'),
Cell('LDCE'),
Cell('LDPE'),
# Cell('LUT1'),
# Cell('LUT2'),
# Cell('LUT3'),
# Cell('LUT4'),
# Cell('LUT5'),
# Cell('LUT6'),
#Cell('LUT6_2'),
Cell('MMCME2_ADV'),
Cell('MMCME2_BASE'),
# Cell('MUXF7'),
# Cell('MUXF8'),
# Cell('OBUF', port_attrs={'O': ['iopad_external_pin']}),
Cell('OBUFDS', port_attrs={'O': ['iopad_external_pin'], 'OB': ['iopad_external_pin']}),
Cell('OBUFT', port_attrs={'O': ['iopad_external_pin']}),
Cell('OBUFTDS', port_attrs={'O': ['iopad_external_pin'], 'OB': ['iopad_external_pin']}),
Cell('ODDR', port_attrs={'C': ['clkbuf_sink']}),
Cell('ODELAYE2', port_attrs={'C': ['clkbuf_sink']}),
Cell('OSERDESE2', port_attrs={'CLK': ['clkbuf_sink'], 'CLKDIV': ['clkbuf_sink']}),
Cell('OUT_FIFO', port_attrs={'RDCLK': ['clkbuf_sink'], 'WRCLK': ['clkbuf_sink']}),
Cell('PHASER_IN'),
Cell('PHASER_IN_PHY'),
Cell('PHASER_OUT'),
Cell('PHASER_OUT_PHY'),
Cell('PHASER_REF'),
Cell('PHY_CONTROL'),
Cell('PLLE2_ADV'),
Cell('PLLE2_BASE'),
Cell('PS7', keep=True),
Cell('PULLDOWN'),
Cell('PULLUP'),
#Cell('RAM128X1D', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM128X1S', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM256X1S', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM32M', port_attrs={'WCLK': ['clkbuf_sink']}),
#Cell('RAM32X1D', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM32X1S', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM32X1S_1', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM32X2S', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM64M', port_attrs={'WCLK': ['clkbuf_sink']}),
#Cell('RAM64X1D', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM64X1S', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM64X1S_1', port_attrs={'WCLK': ['clkbuf_sink']}),
Cell('RAM64X2S', port_attrs={'WCLK': ['clkbuf_sink']}),
# Cell('RAMB18E1', port_attrs={'CLKARDCLK': ['clkbuf_sink'], 'CLKBWRCLK': ['clkbuf_sink']}),
# Cell('RAMB36E1', port_attrs={'CLKARDCLK': ['clkbuf_sink'], 'CLKBWRCLK': ['clkbuf_sink']}),
Cell('ROM128X1'),
Cell('ROM256X1'),
Cell('ROM32X1'),
Cell('ROM64X1'),
#Cell('SRL16E', port_attrs={'CLK': ['clkbuf_sink']}),
#Cell('SRLC32E', port_attrs={'CLK': ['clkbuf_sink']}),
Cell('STARTUPE2', keep=True),
Cell('USR_ACCESSE2'),
Cell('XADC'),
]
class State(Enum):
OUTSIDE = auto()
IN_MODULE = auto()
IN_OTHER_MODULE = auto()
IN_FUNCTION = auto()
IN_TASK = auto()
def xtract_cell_decl(cell, dirs, outf):
for dir in dirs:
fname = os.path.join(dir, cell.name + '.v')
try:
with open(fname) as f:
state = State.OUTSIDE
found = False
# Probably the most horrible Verilog "parser" ever written.
for l in f:
l = l.partition('//')[0]
l = l.strip()
if l == 'module {}'.format(cell.name) or l.startswith('module {} '.format(cell.name)):
if found:
print('Multiple modules in {}.'.format(fname))
sys.exit(1)
elif state != State.OUTSIDE:
print('Nested modules in {}.'.format(fname))
sys.exit(1)
found = True
state = State.IN_MODULE
if cell.keep:
outf.write('(* keep *)\n')
outf.write('module {} (...);\n'.format(cell.name))
elif l.startswith('module '):
if state != State.OUTSIDE:
print('Nested modules in {}.'.format(fname))
sys.exit(1)
state = State.IN_OTHER_MODULE
elif l.startswith('task '):
if state == State.IN_MODULE:
state = State.IN_TASK
elif l.startswith('function '):
if state == State.IN_MODULE:
state = State.IN_FUNCTION
elif l == 'endtask':
if state == State.IN_TASK:
state = State.IN_MODULE
elif l == 'endfunction':
if state == State.IN_FUNCTION:
state = State.IN_MODULE
elif l == 'endmodule':
if state == State.IN_MODULE:
outf.write(l + '\n')
outf.write('\n')
elif state != State.IN_OTHER_MODULE:
print('endmodule in weird place in {}.'.format(cell.name, fname))
sys.exit(1)
state = State.OUTSIDE
elif l.startswith(('input ', 'output ', 'inout ')) and state == State.IN_MODULE:
if l.endswith((';', ',')):
l = l[:-1]
if ';' in l:
print('Weird port line in {} [{}].'.format(fname, l))
sys.exit(1)
kind, _, ports = l.partition(' ')
for port in ports.split(','):
port = port.strip()
for attr in cell.port_attrs.get(port, []):
outf.write(' (* {} *)\n'.format(attr))
outf.write(' {} {};\n'.format(kind, port))
elif l.startswith('parameter ') and state == State.IN_MODULE:
if 'UNPLACED' in l:
continue
if l.endswith((';', ',')):
l = l[:-1]
while ' ' in l:
l = l.replace(' ', ' ')
if ';' in l:
print('Weird parameter line in {} [{}].'.format(fname, l))
sys.exit(1)
outf.write(' {};\n'.format(l))
if state != State.OUTSIDE:
print('endmodule not found in {}.'.format(fname))
sys.exit(1)
if not found:
print('Cannot find module {} in {}.'.format(cell.name, fname))
sys.exit(1)
return
except FileNotFoundError:
continue
print('Cannot find {}.'.format(cell.name))
sys.exit(1)
if __name__ == '__main__':
parser = ArgumentParser(description='Extract Xilinx blackbox cell definitions from Vivado.')
parser.add_argument('vivado_dir', nargs='?', default='/opt/Xilinx/Vivado/2018.1')
args = parser.parse_args()
dirs = [
os.path.join(args.vivado_dir, 'data/verilog/src/xeclib'),
os.path.join(args.vivado_dir, 'data/verilog/src/retarget'),
]
for dir in dirs:
if not os.path.isdir(dir):
print('{} is not a directory'.format(dir))
out = StringIO()
for cell in CELLS:
xtract_cell_decl(cell, dirs, out)
with open('cells_xtra.v', 'w') as f:
f.write('// Created by cells_xtra.py from Xilinx models\n')
f.write('\n')
f.write(out.getvalue())
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