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#!/usr/bin/env python3
import pytrellis
import database
import argparse
import json
from os import path
location_types = dict()
type_at_location = dict()
tiletype_names = dict()
parser = argparse.ArgumentParser(description="import ECP5 routing and bels from Project Trellis")
parser.add_argument("device", type=str, help="target device")
parser.add_argument("-p", "--portspins", type=str, help="path to portpins.inc")
args = parser.parse_args()
def is_global(loc):
return loc.x == -2 and loc.y == -2
# Get the index for a tiletype
def get_tiletype_index(name):
if name in tiletype_names:
return tiletype_names[name]
idx = len(tiletype_names)
tiletype_names[name] = idx
return idx
portpins = dict()
class BinaryBlobAssembler:
def l(self, name, ltype = None, export = False):
if ltype is None:
print("label %s" % (name,))
else:
print("label %s %s" % (name, ltype))
def r(self, name, comment):
if comment is None:
print("ref %s" % (name,))
else:
print("ref %s %s" % (name, comment))
def s(self, s, comment):
print("str %s" % s)
def u8(self, v, comment):
if comment is None:
print("u8 %d" % (v,))
else:
print("u8 %d %s" % (v, comment))
def u16(self, v, comment):
if comment is None:
print("u16 %d" % (v,))
else:
print("u16 %d %s" % (v, comment))
def u32(self, v, comment):
if comment is None:
print("u32 %d" % (v,))
else:
print("u32 %d %s" % (v, comment))
def pre(self, s):
print("pre %s" % s)
def post(self, s):
print("post %s" % s)
def push(self, name):
print("push %s" % name)
def pop(self):
print("pop")
bel_types = {
"NONE": 0,
"SLICE": 1,
"PIO": 2
}
def get_bel_index(ddrg, loc, name):
loctype = ddrg.locationTypes[ddrg.typeAtLocation[loc]]
idx = 0
for bel in loctype.bels:
if ddrg.to_str(bel.name) == name:
return idx
idx += 1
assert loc.y == max_row # Only missing IO should be special pins at bottom of device
return None
packages = {}
pindata = []
def process_pio_db(ddrg, device):
piofile = path.join(database.get_db_root(), "ECP5", dev_names[device], "iodb.json")
with open(piofile, 'r') as f:
piodb = json.load(f)
for pkgname, pkgdata in sorted(piodb["packages"].items()):
pins = []
for name, pinloc in sorted(pkgdata.items()):
x = pinloc["col"]
y = pinloc["row"]
loc = pytrellis.Location(x, y)
pio = "PIO" + pinloc["pio"]
bel_idx = get_bel_index(ddrg, loc, pio)
if bel_idx is not None:
pins.append((name, loc, bel_idx))
packages[pkgname] = pins
for metaitem in piodb["pio_metadata"]:
x = metaitem["col"]
y = metaitem["row"]
loc = pytrellis.Location(x, y)
pio = "PIO" + metaitem["pio"]
bank = metaitem["bank"]
if "function" in metaitem:
pinfunc = metaitem["function"]
else:
pinfunc = None
bel_idx = get_bel_index(ddrg, loc, pio)
if bel_idx is not None:
pindata.append((loc, bel_idx, bank, pinfunc))
global_data = {}
quadrants = ["UL", "UR", "LL", "LR"]
def process_loc_globals(chip):
for y in range(0, max_row+1):
for x in range(0, max_col+1):
quad = chip.global_data.get_quadrant(y, x)
tapdrv = chip.global_data.get_tap_driver(y, x)
global_data[x, y] = (quadrants.index(quad), int(tapdrv.dir), tapdrv.col)
def write_database(dev_name, ddrg, endianness):
def write_loc(loc, sym_name):
bba.u16(loc.x, "%s.x" % sym_name)
bba.u16(loc.y, "%s.y" % sym_name)
bba = BinaryBlobAssembler()
bba.pre('#include "nextpnr.h"')
bba.pre('NEXTPNR_NAMESPACE_BEGIN')
bba.post('NEXTPNR_NAMESPACE_END')
bba.push("chipdb_blob_%s" % dev_name)
bba.r("chip_info", "chip_info")
loctypes = list([_.key() for _ in ddrg.locationTypes])
for idx in range(len(loctypes)):
loctype = ddrg.locationTypes[loctypes[idx]]
if len(loctype.arcs) > 0:
bba.l("loc%d_pips" % idx, "PipInfoPOD")
for arc in loctype.arcs:
write_loc(arc.srcWire.rel, "src")
write_loc(arc.sinkWire.rel, "dst")
bba.u32(arc.srcWire.id, "src_idx")
bba.u32(arc.sinkWire.id, "dst_idx")
bba.u32(arc.delay, "delay") # TODO:delay
bba.u16(get_tiletype_index(ddrg.to_str(arc.tiletype)), "tile_type")
bba.u8(int(arc.cls), "pip_type")
bba.u8(0, "padding")
if len(loctype.wires) > 0:
for wire_idx in range(len(loctype.wires)):
wire = loctype.wires[wire_idx]
if len(wire.arcsDownhill) > 0:
bba.l("loc%d_wire%d_downpips" % (idx, wire_idx), "PipLocatorPOD")
for dp in wire.arcsDownhill:
write_loc(dp.rel, "rel_loc")
bba.u32(dp.id, "index")
if len(wire.arcsUphill) > 0:
bba.l("loc%d_wire%d_uppips" % (idx, wire_idx), "PipLocatorPOD")
for up in wire.arcsUphill:
write_loc(up.rel, "rel_loc")
bba.u32(up.id, "index")
if len(wire.belPins) > 0:
bba.l("loc%d_wire%d_belpins" % (idx, wire_idx), "BelPortPOD")
for bp in wire.belPins:
write_loc(bp.bel.rel, "rel_bel_loc")
bba.u32(bp.bel.id, "bel_index")
bba.u32(portpins[ddrg.to_str(bp.pin)], "port")
bba.l("loc%d_wires" % idx, "WireInfoPOD")
for wire_idx in range(len(loctype.wires)):
wire = loctype.wires[wire_idx]
bba.s(ddrg.to_str(wire.name), "name")
bba.u32(len(wire.arcsUphill), "num_uphill")
bba.u32(len(wire.arcsDownhill), "num_downhill")
bba.r("loc%d_wire%d_uppips" % (idx, wire_idx) if len(wire.arcsUphill) > 0 else None, "pips_uphill")
bba.r("loc%d_wire%d_downpips" % (idx, wire_idx) if len(wire.arcsDownhill) > 0 else None, "pips_downhill")
bba.u32(len(wire.belPins), "num_bel_pins")
bba.r("loc%d_wire%d_belpins" % (idx, wire_idx) if len(wire.belPins) > 0 else None, "bel_pins")
if len(loctype.bels) > 0:
for bel_idx in range(len(loctype.bels)):
bel = loctype.bels[bel_idx]
bba.l("loc%d_bel%d_wires" % (idx, bel_idx), "BelWirePOD")
for pin in bel.wires:
write_loc(pin.wire.rel, "rel_wire_loc")
bba.u32(pin.wire.id, "wire_index")
bba.u32(portpins[ddrg.to_str(pin.pin)], "port")
bba.u32(int(pin.dir), "dir")
bba.l("loc%d_bels" % idx, "BelInfoPOD")
for bel_idx in range(len(loctype.bels)):
bel = loctype.bels[bel_idx]
bba.s(ddrg.to_str(bel.name), "name")
bba.u32(bel_types[ddrg.to_str(bel.type)], "type")
bba.u32(bel.z, "z")
bba.u32(len(bel.wires), "num_bel_wires")
bba.r("loc%d_bel%d_wires" % (idx, bel_idx), "bel_wires")
bba.l("locations", "LocationTypePOD")
for idx in range(len(loctypes)):
loctype = ddrg.locationTypes[loctypes[idx]]
bba.u32(len(loctype.bels), "num_bels")
bba.u32(len(loctype.wires), "num_wires")
bba.u32(len(loctype.arcs), "num_pips")
bba.r("loc%d_bels" % idx if len(loctype.bels) > 0 else None, "bel_data")
bba.r("loc%d_wires" % idx if len(loctype.wires) > 0 else None, "wire_data")
bba.r("loc%d_pips" % idx if len(loctype.arcs) > 0 else None, "pips_data")
bba.l("location_types", "int32_t")
for y in range(0, max_row+1):
for x in range(0, max_col+1):
bba.u32(loctypes.index(ddrg.typeAtLocation[pytrellis.Location(x, y)]), "loctype")
bba.l("location_glbinfo", "GlobalInfoPOD")
for y in range(0, max_row+1):
for x in range(0, max_col+1):
bba.u16(global_data[x, y][2], "tap_col")
bba.u8(global_data[x, y][1], "tap_dir")
bba.u8(global_data[x, y][0], "quad")
for package, pkgdata in sorted(packages.items()):
bba.l("package_data_%s" % package, "PackagePinPOD")
for pin in pkgdata:
name, loc, bel_idx = pin
bba.s(name, "name")
write_loc(loc, "abs_loc")
bba.u32(bel_idx, "bel_index")
bba.l("package_data", "PackageInfoPOD")
for package, pkgdata in sorted(packages.items()):
bba.s(package, "name")
bba.u32(len(pkgdata), "num_pins")
bba.r("package_data_%s" % package, "pin_data")
bba.l("pio_info", "PIOInfoPOD")
for pin in pindata:
loc, bel_idx, bank, func = pin
write_loc(loc, "abs_loc")
bba.u32(bel_idx, "bel_index")
if func is not None:
bba.s(func, "function_name")
else:
bba.r(None, "function_name")
bba.u16(bank, "bank")
bba.u16(0, "padding")
bba.l("tiletype_names", "RelPtr<char>")
for tt in tiletype_names:
bba.s(tt, "name")
bba.l("chip_info")
bba.u32(max_col + 1, "width")
bba.u32(max_row + 1, "height")
bba.u32((max_col + 1) * (max_row + 1), "num_tiles")
bba.u32(len(location_types), "num_location_types")
bba.u32(len(packages), "num_packages")
bba.u32(len(pindata), "num_pios")
bba.r("locations", "locations")
bba.r("location_types", "location_type")
bba.r("location_glbinfo", "location_glbinfo")
bba.r("tiletype_names", "tiletype_names")
bba.r("package_data", "package_info")
bba.r("pio_info", "pio_info")
bba.pop()
return bba
dev_names = {"25k": "LFE5U-25F", "45k": "LFE5U-45F", "85k": "LFE5U-85F"}
def main():
global max_row, max_col
pytrellis.load_database(database.get_db_root())
args = parser.parse_args()
# Read port pin file
with open(args.portspins) as f:
for line in f:
line = line.replace("(", " ")
line = line.replace(")", " ")
line = line.split()
if len(line) == 0:
continue
assert len(line) == 2
assert line[0] == "X"
idx = len(portpins) + 1
portpins[line[1]] = idx
# print("Initialising chip...")
chip = pytrellis.Chip(dev_names[args.device])
# print("Building routing graph...")
ddrg = pytrellis.make_dedup_chipdb(chip)
max_row = chip.get_max_row()
max_col = chip.get_max_col()
process_pio_db(ddrg, args.device)
process_loc_globals(chip)
# print("{} unique location types".format(len(ddrg.locationTypes)))
bba = write_database(args.device, ddrg, "le")
if __name__ == "__main__":
main()
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