#!/usr/bin/env python3 # # This file is part of LiteX-Boards. # # Copyright (c) 2021 Franck Jullien # Copyright (c) 2021 Florent Kermarrec # SPDX-License-Identifier: BSD-2-Clause import argparse from migen import * from migen.genlib.resetsync import AsyncResetSynchronizer from litex_boards.platforms import efinix_trion_t120_bga576_dev_kit from litex.soc.cores.clock import * from litex.soc.integration.soc_core import * from litex.soc.integration.soc import SoCRegion from litex.soc.integration.builder import * from litex.soc.cores.led import LedChaser from litex.soc.interconnect import axi from liteeth.phy.trionrgmii import LiteEthPHYRGMII # CRG ---------------------------------------------------------------------------------------------- class _CRG(Module): def __init__(self, platform, sys_clk_freq): self.clock_domains.cd_sys = ClockDomain() # # # clk40 = platform.request("clk40") rst_n = platform.request("user_btn", 0) # PLL self.submodules.pll = pll = TRIONPLL(platform) self.comb += pll.reset.eq(~rst_n) pll.register_clkin(clk40, 40e6) pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True, name="axi_clk") # BaseSoC ------------------------------------------------------------------------------------------ class BaseSoC(SoCCore): def __init__(self, sys_clk_freq=int(100e6), with_spi_flash = False, with_ethernet = False, with_etherbone = False, eth_phy = 0, eth_ip = "192.168.1.50", with_led_chaser = True, **kwargs): platform = efinix_trion_t120_bga576_dev_kit.Platform() # USBUART PMOD as Serial-------------------------------------------------------------------- platform.add_extension(efinix_trion_t120_bga576_dev_kit.usb_pmod_io("pmod_e")) kwargs["uart_name"] = "usb_uart" # SoCCore ---------------------------------------------------------------------------------- SoCCore.__init__(self, platform, sys_clk_freq, ident = "LiteX SoC on Efinix Trion T120 BGA576 Dev Kit", ident_version = True, **kwargs ) # CRG -------------------------------------------------------------------------------------- self.submodules.crg = _CRG(platform, sys_clk_freq) # SPI Flash -------------------------------------------------------------------------------- if with_spi_flash: from litespi.modules import W25Q128JV from litespi.opcodes import SpiNorFlashOpCodes as Codes self.add_spi_flash(mode="4x", module=W25Q128JV(Codes.READ_1_1_4), with_master=True) platform.toolchain.excluded_ios.append(platform.lookup_request("spiflash4x").dq) # Leds ------------------------------------------------------------------------------------- if with_led_chaser: self.submodules.leds = LedChaser( pads = platform.request_all("user_led"), sys_clk_freq = sys_clk_freq) # Tristate Test ---------------------------------------------------------------------------- from litex.build.generic_platform import Subsignal, Pins, Misc, IOStandard from litex.soc.cores.bitbang import I2CMaster platform.add_extension([("i2c", 0, Subsignal("sda", Pins("T12")), Subsignal("scl", Pins("V11")), IOStandard("3.3_V_LVTTL_/_LVCMOS"), )]) self.submodules.i2c = I2CMaster(pads=platform.request("i2c")) # Ethernet / Etherbone --------------------------------------------------------------------- if with_ethernet or with_etherbone: self.submodules.ethphy = LiteEthPHYRGMII( platform = platform, clock_pads = platform.request("eth_clocks", eth_phy), pads = platform.request("eth", eth_phy), with_hw_init_reset = False) if with_ethernet: self.add_ethernet(phy=self.ethphy, software_debug=True) if with_etherbone: self.add_etherbone(phy=self.ethphy) # FIXME: Avoid this. platform.toolchain.excluded_ios.append(platform.lookup_request("eth_clocks").tx) platform.toolchain.excluded_ios.append(platform.lookup_request("eth_clocks").rx) platform.toolchain.excluded_ios.append(platform.lookup_request("eth").tx_data) platform.toolchain.excluded_ios.append(platform.lookup_request("eth").rx_data) platform.toolchain.excluded_ios.append(platform.lookup_request("eth").mdio) # LPDDR3 SDRAM ----------------------------------------------------------------------------- if False: # DRAM / PLL Blocks. # ------------------ dram_clk = platform.request("br0_pll_clkin") platform.toolchain.excluded_ios.append(dram_clk) block = {"type" : "DRAM"} platform.toolchain.ifacewriter.xml_blocks.append(block) block = {"type" : "PLL_DRAM"} platform.toolchain.ifacewriter.blocks.append(block) # DRAM Rst. # --------- br0_pll_rstn = platform.add_iface_io("br0_pll_rstn") self.comb += br0_pll_rstn.eq(platform.request("user_btn", 1)) self.specials += Instance("ddr_reset_sequencer", i_ddr_rstn_i = ~ResetSignal("sys"), i_clk = ClockSignal("sys"), o_ddr_rstn = platform.add_iface_io("ddr_inst1_RSTN"), o_ddr_cfg_seq_rst = platform.add_iface_io("ddr_inst1_CFG_SEQ_RST"), o_ddr_cfg_seq_start = platform.add_iface_io("ddr_inst1_CFG_SEQ_START"), o_ddr_init_done = Signal(), ) platform.add_source("ddr_reset_sequencer.v") # FIXME: From example design. # DRAM AXI-Port. # -------------- axi_port = axi.AXIInterface(data_width=256, address_width=32, id_width=8) ios = [("axi0", 0, Subsignal("wdata", Pins(256)), Subsignal("wready", Pins(1)), Subsignal("wid", Pins(8)), Subsignal("bready", Pins(1)), Subsignal("rdata", Pins(256)), Subsignal("aid", Pins(8)), Subsignal("bvalid", Pins(1)), Subsignal("rlast", Pins(1)), Subsignal("bid", Pins(8)), Subsignal("asize", Pins(3)), Subsignal("atype", Pins(1)), Subsignal("aburst", Pins(2)), Subsignal("wvalid", Pins(1)), Subsignal("aaddr", Pins(32)), Subsignal("rid", Pins(8)), Subsignal("avalid", Pins(1)), Subsignal("rvalid", Pins(1)), Subsignal("alock", Pins(2)), Subsignal("rready", Pins(1)), Subsignal("rresp", Pins(2)), Subsignal("wstrb", Pins(32)), Subsignal("aready", Pins(1)), Subsignal("alen", Pins(8)), Subsignal("wlast", Pins(1)), )] io = platform.add_iface_ios(ios) rw_n = Signal() self.comb += rw_n.eq(axi_port.ar.valid) self.comb += [ # Pseudo AW/AR Channels. io.atype.eq(~rw_n), io.aaddr.eq( Mux(rw_n, axi_port.ar.addr, axi_port.aw.addr)), io.aid.eq( Mux(rw_n, axi_port.ar.id, axi_port.aw.id)), io.alen.eq( Mux(rw_n, axi_port.ar.len, axi_port.aw.len)), io.asize.eq( Mux(rw_n, axi_port.ar.size[0:4], axi_port.aw.size[0:4])), # CHECKME. io.aburst.eq( Mux(rw_n, axi_port.ar.burst, axi_port.aw.burst)), io.alock.eq( Mux(rw_n, axi_port.ar.lock, axi_port.aw.lock)), io.avalid.eq( Mux(rw_n, axi_port.ar.valid, axi_port.aw.valid)), axi_port.aw.ready.eq(~rw_n & io.aready), axi_port.ar.ready.eq( rw_n & io.aready), # R Channel. axi_port.r.id.eq(io.rid), axi_port.r.data.eq(io.rdata), axi_port.r.last.eq(io.rlast), axi_port.r.resp.eq(io.rresp), axi_port.r.valid.eq(io.rvalid), io.rready.eq(axi_port.r.ready), # W Channel. io.wid.eq(axi_port.w.id), io.wstrb.eq(axi_port.w.strb), io.wdata.eq(axi_port.w.data), io.wlast.eq(axi_port.w.last), io.wvalid.eq(axi_port.w.valid), axi_port.w.ready.eq(io.wready), # B Channel. axi_port.b.id.eq(io.bid), axi_port.b.valid.eq(io.bvalid), io.bready.eq(axi_port.b.ready), ] # Connect AXI interface to the main bus of the SoC. axi_lite_port = axi.AXILiteInterface(data_width=256, address_width=32) self.submodules += axi.AXILite2AXI(axi_lite_port, axi_port) self.bus.add_slave("main_ram", axi_lite_port, SoCRegion(origin=0x4000_0000, size=0x1000_0000)) # 256MB. # Build -------------------------------------------------------------------------------------------- def main(): parser = argparse.ArgumentParser(description="LiteX SoC on Efinix Trion T120 BGA576 Dev Kit") parser.add_argument("--build", action="store_true", help="Build bitstream") parser.add_argument("--load", action="store_true", help="Load bitstream") parser.add_argument("--flash", action="store_true", help="Flash bitstream") parser.add_argument("--sys-clk-freq", default=100e6, help="System clock frequency (default: 100MHz)") parser.add_argument("--with-spi-flash", action="store_true", help="Enable SPI Flash (MMAPed)") ethopts = parser.add_mutually_exclusive_group() ethopts.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support") ethopts.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") parser.add_argument("--eth-phy", default=0, type=int, help="Ethernet PHY: 0 (default) or 1") builder_args(parser) soc_core_args(parser) args = parser.parse_args() soc = BaseSoC( sys_clk_freq = int(float(args.sys_clk_freq)), with_spi_flash = args.with_spi_flash, with_ethernet = args.with_ethernet, with_etherbone = args.with_etherbone, eth_ip = args.eth_ip, eth_phy = args.eth_phy, **soc_core_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, f"{soc.build_name}.bit")) if args.flash: from litex.build.openfpgaloader import OpenFPGALoader prog = OpenFPGALoader("trion_t120_bga576") prog.flash(0, os.path.join(builder.gateware_dir, f"{soc.build_name}.hex")) if __name__ == "__main__": main()