litex-boards/litex_boards/targets/trenz_cyc1000.py

95 lines
3.3 KiB
Python
Executable File

#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2021 Jakub Cabal <jakubcabal@gmail.com>
# SPDX-License-Identifier: BSD-2-Clause
from migen import *
from litex.gen import LiteXModule
from litex_boards.platforms import trenz_cyc1000
from litex.soc.cores.clock import Cyclone10LPPLL
from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser
from litedram.modules import M12L64322A
from litedram.phy import GENSDRPHY
# CRG ----------------------------------------------------------------------------------------------
class _CRG(LiteXModule):
def __init__(self, platform, sys_clk_freq):
self.rst = Signal()
self.cd_sys = ClockDomain()
self.cd_sys_ps = ClockDomain()
# # #
# Clk / Rst
clk12 = platform.request("clk12")
# PLL
self.pll = pll = Cyclone10LPPLL(speedgrade="-C8")
self.comb += pll.reset.eq(self.rst)
pll.register_clkin(clk12, 12e6)
pll.create_clkout(self.cd_sys, sys_clk_freq)
pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90)
# SDRAM clock
self.comb += platform.request("sdram_clock").eq(self.cd_sys_ps.clk)
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=50e6, with_led_chaser=True, **kwargs):
platform = trenz_cyc1000.Platform()
# CRG --------------------------------------------------------------------------------------
self.crg = _CRG(platform, sys_clk_freq)
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on CYC1000", **kwargs)
# SDR SDRAM --------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
self.sdrphy = GENSDRPHY(platform.request("sdram"), sys_clk_freq)
self.add_sdram("sdram",
phy = self.sdrphy,
module = M12L64322A(sys_clk_freq, "1:1"), # Winbond W9864G6JT
l2_cache_size = kwargs.get("l2_size", 8192)
)
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
# Build --------------------------------------------------------------------------------------------
def main():
from litex.build.parser import LiteXArgumentParser
parser = LiteXArgumentParser(platform=trenz_cyc1000.Platform, description="LiteX SoC on CYC1000.")
parser.add_target_argument("--sys-clk-freq", default=50e6, type=float, help="System clock frequency.")
args = parser.parse_args()
soc = BaseSoC(
sys_clk_freq = args.sys_clk_freq,
**parser.soc_argdict
)
builder = Builder(soc, **parser.builder_argdict)
if args.build:
builder.build(**parser.toolchain_argdict)
if args.load:
prog = soc.platform.create_programmer()
prog.load_bitstream(builder.get_bitstream_filename(mode="sram"))
if __name__ == "__main__":
main()