litex-boards/litex_boards/targets/c10lprefkit.py

132 lines
5.1 KiB
Python
Executable File

#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2019 Antti Lukats <antti.lukats@gmail.com>
# Copyright (c) 2019 msloniewski <marcin.sloniewski@gmail.com>
# Copyright (c) 2019 Florent Kermarrec <florent@enjoy-digital.fr>
# SPDX-License-Identifier: BSD-2-Clause
import os
import argparse
from migen import *
from litex_boards.platforms import c10lprefkit
from litex.soc.cores.clock import Cyclone10LPPLL
from litex.soc.integration.soc_core import *
from litex.soc.integration.soc_sdram import *
from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser
from litedram.modules import MT48LC16M16
from litedram.phy import GENSDRPHY
from liteeth.phy.mii import LiteEthPHYMII
from litehyperbus.core.hyperbus import HyperRAM
# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
def __init__(self, platform, sys_clk_freq):
self.rst = Signal()
self.clock_domains.cd_sys = ClockDomain()
self.clock_domains.cd_sys_ps = ClockDomain(reset_less=True)
# # #
# Clk / Rst
clk12 = platform.request("clk12")
# PLL
self.submodules.pll = pll = Cyclone10LPPLL(speedgrade="-A7")
self.comb += pll.reset.eq(~platform.request("cpu_reset") | 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):
mem_map = {
"hyperram": 0x20000000,
}
mem_map.update(SoCCore.mem_map)
def __init__(self, sys_clk_freq=int(50e6), with_ethernet=False, **kwargs):
platform = c10lprefkit.Platform()
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq,
ident = "LiteX SoC on C10 LP RefKit",
ident_version = True,
**kwargs)
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq)
# HyperRam ---------------------------------------------------------------------------------
self.submodules.hyperram = HyperRAM(platform.request("hyperram"))
self.add_wb_slave(self.mem_map["hyperram"], self.hyperram.bus)
self.add_memory_region("hyperram", self.mem_map["hyperram"], 8*1024*1024)
# SDR SDRAM --------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
self.submodules.sdrphy = GENSDRPHY(platform.request("sdram"))
self.add_sdram("sdram",
phy = self.sdrphy,
module = MT48LC16M16(sys_clk_freq, "1:1"),
origin = self.mem_map["main_ram"],
size = kwargs.get("max_sdram_size", 0x40000000),
l2_cache_size = kwargs.get("l2_size", 8192),
l2_cache_min_data_width = kwargs.get("min_l2_data_width", 128),
l2_cache_reverse = True
)
# Ethernet ---------------------------------------------------------------------------------
if with_ethernet:
self.submodules.ethphy = LiteEthPHYMII(
clock_pads = self.platform.request("eth_clocks"),
pads = self.platform.request("eth"))
self.add_csr("ethphy")
self.add_ethernet(phy=self.ethphy)
# Leds -------------------------------------------------------------------------------------
self.submodules.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
self.add_csr("leds")
# Build --------------------------------------------------------------------------------------------
def main():
parser = argparse.ArgumentParser(description="LiteX SoC on C10 LP RefKit")
parser.add_argument("--build", action="store_true", help="Build bitstream")
parser.add_argument("--load", action="store_true", help="Load bitstream")
parser.add_argument("--sys-clk-freq", default=500e6, help="System clock frequency (default: 50MHz)")
parser.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support")
builder_args(parser)
soc_sdram_args(parser)
args = parser.parse_args()
soc = BaseSoC(
sys_clk_freq = int(float(args.sys_clk_freq)),
with_ethernet = args.with_ethernet,
**soc_sdram_argdict(args)
)
builder = Builder(soc, **builder_argdict(args))
builder.build(run=args.build)
if args.load:
prog = soc.platform.create_programmer()
prog.load_bitstream(os.path.join(builder.gateware_dir, soc.build_name + ".sof"))
if __name__ == "__main__":
main()