#!/usr/bin/env python3 # # This file is part of LiteX-Boards. # # Copyright (c) 2020 Florent Kermarrec # SPDX-License-Identifier: BSD-2-Clause # Build/Use ---------------------------------------------------------------------------------------- # Build/Load bitstream: # ./sds1104xe.py --with-etherbone --uart-name=crossover --csr-csv=csr.csv --build --load # # Test Ethernet: # ping 192.168.1.50 # # Test Console: # litex_server --udp # litex_term crossover # -------------------------------------------------------------------------------------------------- import os import argparse from migen import * from litex_boards.platforms import sds1104xe from litex.build.xilinx.vivado import vivado_build_args, vivado_build_argdict from litex.soc.cores.clock import * from litex.soc.integration.soc_core import * from litex.soc.integration.builder import * from litedram.modules import MT41K64M16 from litedram.phy import s7ddrphy from liteeth.phy.mii import LiteEthPHYMII # CRG ---------------------------------------------------------------------------------------------- class _CRG(Module): def __init__(self, platform, sys_clk_freq): self.rst = Signal() self.clock_domains.cd_sys = ClockDomain() self.clock_domains.cd_sys4x = ClockDomain(reset_less=True) self.clock_domains.cd_sys4x_dqs = ClockDomain(reset_less=True) self.clock_domains.cd_idelay = ClockDomain() # # # self.submodules.pll = pll = S7PLL(speedgrade=-1) pll.register_clkin(ClockSignal("eth_tx"), 25e6) pll.create_clkout(self.cd_sys, sys_clk_freq) pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq) pll.create_clkout(self.cd_sys4x_dqs, 4*sys_clk_freq, phase=90) pll.create_clkout(self.cd_idelay, 200e6) platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst. self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_idelay) # BaseSoC ------------------------------------------------------------------------------------------ class BaseSoC(SoCCore): def __init__(self, sys_clk_freq=int(100e6), with_etherbone=True, eth_ip="192.168.1.50", **kwargs): platform = sds1104xe.Platform() # SoCCore ---------------------------------------------------------------------------------- if kwargs.get("uart_name", "serial") == "serial": kwargs["uart_name"] = "crossover" # Defaults to Crossover UART. SoCCore.__init__(self, platform, sys_clk_freq, ident = "LiteX SoC on Siglent SDS1104X-E", ident_version = True, **kwargs) # CRG -------------------------------------------------------------------------------------- self.submodules.crg = _CRG(platform, sys_clk_freq) # DDR3 SDRAM ------------------------------------------------------------------------------- if not self.integrated_main_ram_size: self.submodules.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"), memtype = "DDR3", nphases = 4, sys_clk_freq = sys_clk_freq) self.add_sdram("sdram", phy = self.ddrphy, module = MT41K64M16(sys_clk_freq, "1:4"), 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 ) # Etherbone -------------------------------------------------------------------------------- if with_etherbone: # FIXME: Simplify LiteEth Hybrid MAC integration. from liteeth.common import convert_ip from liteeth.mac import LiteEthMAC from liteeth.core.arp import LiteEthARP from liteeth.core.ip import LiteEthIP from liteeth.core.udp import LiteEthUDP from liteeth.core.icmp import LiteEthICMP from liteeth.core import LiteEthUDPIPCore from liteeth.frontend.etherbone import LiteEthEtherbone # Ethernet PHY ethphy = LiteEthPHYMII( clock_pads = self.platform.request("eth_clocks"), pads = self.platform.request("eth")) self.submodules += ethphy etherbone_ip_address = convert_ip("192.168.1.51") etherbone_mac_address = 0x10e2d5000001 # Ethernet MAC self.submodules.ethmac = LiteEthMAC(phy=ethphy, dw=8, interface = "hybrid", endianness = self.cpu.endianness, hw_mac = etherbone_mac_address) # Software Interface. self.add_memory_region("ethmac", self.mem_map["ethmac"], 0x2000, type="io") self.add_wb_slave(self.mem_regions["ethmac"].origin, self.ethmac.bus, 0x2000) if self.irq.enabled: self.irq.add("ethmac", use_loc_if_exists=True) # Hardware Interface. self.submodules.arp = LiteEthARP(self.ethmac, etherbone_mac_address, etherbone_ip_address, sys_clk_freq, dw=8) self.submodules.ip = LiteEthIP(self.ethmac, etherbone_mac_address, etherbone_ip_address, self.arp.table, dw=8) self.submodules.icmp = LiteEthICMP(self.ip, etherbone_ip_address, dw=8) self.submodules.udp = LiteEthUDP(self.ip, etherbone_ip_address, dw=8) # Etherbone self.submodules.etherbone = LiteEthEtherbone(self.udp, 1234, mode="master") self.add_wb_master(self.etherbone.wishbone.bus) # Timing constraints eth_rx_clk = ethphy.crg.cd_eth_rx.clk eth_tx_clk = ethphy.crg.cd_eth_tx.clk self.platform.add_period_constraint(eth_rx_clk, 1e9/ethphy.rx_clk_freq) self.platform.add_period_constraint(eth_tx_clk, 1e9/ethphy.tx_clk_freq) self.platform.add_false_path_constraints(self.crg.cd_sys.clk, eth_rx_clk, eth_tx_clk) # Build -------------------------------------------------------------------------------------------- def main(): parser = argparse.ArgumentParser(description="LiteX SoC on SDS1104X-E") 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=100e6, help="System clock frequency (default: 100MHz)") parser.add_argument("--with-etherbone", action="store_true", help="Enable Etherbone support") parser.add_argument("--eth-ip", default="192.168.1.50", type=str, help="Ethernet/Etherbone IP address") builder_args(parser) soc_core_args(parser) vivado_build_args(parser) args = parser.parse_args() soc = BaseSoC( sys_clk_freq = int(float(args.sys_clk_freq)), with_etherbone = args.with_etherbone, eth_ip = args.eth_ip, **soc_core_argdict(args) ) builder = Builder(soc, **builder_argdict(args)) builder.build(**vivado_build_argdict(args), run=args.build) if args.load: prog = soc.platform.create_programmer() prog.load_bitstream(os.path.join(builder.gateware_dir, soc.build_name + ".bit"), device=1) if __name__ == "__main__": main()