diff --git a/litex_boards/platforms/ld_schoko.py b/litex_boards/platforms/ld_schoko.py new file mode 100644 index 0000000..57f2f55 --- /dev/null +++ b/litex_boards/platforms/ld_schoko.py @@ -0,0 +1,162 @@ +# +# This file is part of LiteX-Boards. +# +# Copright (c) 2022 Lone Dynamics Corporation +# +# SPDX-License-Identifier: BSD-2-Clause + +from litex.build.generic_platform import * +from litex.build.lattice import LatticePlatform +from litex.build.openfpgaloader import OpenFPGALoader + +# IOs ---------------------------------------------------------------------------------------------- + +_io_vx = [ + + # Clock + ("clk48", 0, Pins("A7"), IOStandard("LVCMOS33")), + + # Leds + ("user_led", 0, Pins("B1"), IOStandard("LVCMOS33")), + ("user_led", 1, Pins("C1"), IOStandard("LVCMOS33")), + ("user_led", 2, Pins("D1"), IOStandard("LVCMOS33")), + ("rgb_led", 0, + Subsignal("r", Pins("B1"), IOStandard("LVCMOS33")), + Subsignal("g", Pins("C1"), IOStandard("LVCMOS33")), + Subsignal("b", Pins("D1"), IOStandard("LVCMOS33")), + ), + + # SDRAM + ("sdram_clock", 0, Pins("F16"), IOStandard("LVTTL33")), + ("sdram", 0, + Subsignal("a", Pins( + "R14 M14 L14 L13 G12 G13 G14 G15", + "F12 F13 T15 F14 E14")), + Subsignal("ba", Pins("T14 T13")), + Subsignal("cs_n", Pins("G16")), + Subsignal("cke", Pins("F15")), + Subsignal("ras_n", Pins("J16")), + Subsignal("cas_n", Pins("K16")), + Subsignal("we_n", Pins("L15")), + Subsignal("dq", Pins( + "R15 R16 P16 P15 N16 N14 M16 M15", + "E15 D16 D14 C16 B16 C14 C15 B15")), + Subsignal("dm", Pins("L16 E16")), + IOStandard("LVTTL33") + ), + + # VGA + ("vga", 0, + Subsignal("r", Pins("J3")), + Subsignal("g", Pins("K3")), + Subsignal("b", Pins("H2")), + Subsignal("hsync", Pins("J1")), + Subsignal("vsync", Pins("J2")), + IOStandard("LVCMOS33") + ), + + # Differential Data Multiple Interface + ("ddmi", 0, + Subsignal("clk_p", Pins("R5"), + IOStandard("LVCMOS33D"), Misc("DRIVE=4")), + Subsignal("data0_p", Pins("P4"), + IOStandard("LVCMOS33D"), Misc("DRIVE=4")), + Subsignal("data1_p", Pins("P1"), + IOStandard("LVCMOS33D"), Misc("DRIVE=4")), + Subsignal("data2_p", Pins("N1"), + IOStandard("LVCMOS33D"), Misc("DRIVE=4")), + ), + + # USB-C + ("usb", 0, + Subsignal("d_p", Pins("T6")), + Subsignal("d_n", Pins("R6")), + Subsignal("pullup", Pins("R7")), + IOStandard("LVCMOS33") + ), + + # USB HOST + ("usb_host", 0, + Subsignal("dp", Pins("F2")), + Subsignal("dm", Pins("E1")), + IOStandard("LVCMOS33") + ), + + # UART PMOD + ("serial", 0, + Subsignal("tx", Pins("PMODA:1")), + Subsignal("rx", Pins("PMODA:2")), + IOStandard("LVCMOS33") + ), + + # SPI + ("spiflash", 0, + Subsignal("cs_n", Pins("N8"), Misc("PULLMODE=UP")), + Subsignal("clk", Pins("N9")), + Subsignal("miso", Pins("T7"), Misc("PULLMODE=UP")), + Subsignal("mosi", Pins("T8"), Misc("PULLMODE=UP")), + Misc("SLEWRATE=SLOW"), + IOStandard("LVCMOS33"), + ), + +] + +_io_v1 = [ + + # SD card w/ SPI interface + ("spisdcard", 0, + Subsignal("clk", Pins("D6")), + Subsignal("mosi", Pins("C6")), + Subsignal("cs_n", Pins("B6")), + Subsignal("miso", Pins("E6")), + Misc("SLEWRATE=FAST"), + IOStandard("LVCMOS33"), + ), + +] + +_io_v2 = [ + + # SD card w/ SD-mode interface + ("sdcard", 0, + Subsignal("cd", Pins("A13")), + Subsignal("clk", Pins("D6")), + Subsignal("cmd", Pins("C6")), + Subsignal("data", Pins("E6 B13 B12 B6")), + Misc("SLEW=FAST"), + IOStandard("LVCMOS33") + ), +] + +# Connectors --------------------------------------------------------------------------------------- + +_connectors_vx = [ + ("PMODA", "A2 A3 A4 A5 B3 B4 B5 A6"), + ("PMODB", "A12 A11 B11 B10 A9 A10 B8 B9"), +] + +# Platform ----------------------------------------------------------------------------------------- + +class Platform(LatticePlatform): + default_clk_name = "clk48" + default_clk_period = 1e9/48e6 + + def __init__(self, revision="v1", device="45F", toolchain="trellis", **kwargs): + assert revision in ["v1", "v2"] + assert device in ["25F", "45F", "85F"] + self.revision = revision + + io = _io_vx + connectors = _connectors_vx + + if revision == "v1": io += _io_v1 + if revision == "v2": io += _io_v2 + + LatticePlatform.__init__(self, f"LFE5U-{device}-6BG256", io, connectors, toolchain=toolchain, **kwargs) + + def create_programmer(self, cable): + return OpenFPGALoader(cable=cable) + + def do_finalize(self, fragment): + LatticePlatform.do_finalize(self, fragment) + self.add_period_constraint(self.lookup_request("clk48", loose=True), 1e9/48e6) diff --git a/litex_boards/targets/ld_schoko.py b/litex_boards/targets/ld_schoko.py new file mode 100755 index 0000000..3de971d --- /dev/null +++ b/litex_boards/targets/ld_schoko.py @@ -0,0 +1,219 @@ +#!/usr/bin/env python3 + +# +# This file is part of LiteX-Boards. +# +# Copyright (c) Lone Dynamics Corporation +# +# SPDX-License-Identifier: BSD-2-Clause +# + +import os +import sys +import json + +from migen import * +from litex_boards.platforms import ld_schoko + +from litex.build.lattice.trellis import trellis_args, trellis_argdict +from litex.build.io import DDROutput + +from litex.soc.cores.clock import * +from litex.soc.cores.led import LedChaser +from litex.soc.cores.usb_ohci import USBOHCI +from litex.soc.cores.video import VideoVGAPHY +from litex.soc.cores.video import VideoHDMIPHY + +from litex.soc.integration.soc_core import * +from litex.soc.integration.builder import * + +from litedram.modules import W9825G6KH6 +from litedram.phy import GENSDRPHY, HalfRateGENSDRPHY +#from litedram.phy import QuarterRateGENSDRPHY + +from litex.soc.integration.soc import SoCRegion + +# CRG --------------------------------------------------------------------------------------------- + +class _CRG(Module): + def __init__(self, platform, sys_clk_freq, sdram_rate): + self.rst = Signal() + self.clock_domains.cd_por = ClockDomain() + self.clock_domains.cd_sys = ClockDomain() + self.clock_domains.cd_video = ClockDomain() + self.clock_domains.cd_video5x = ClockDomain() + + # Clk / Rst + clk48 = platform.request("clk48") + + # Power on reset + por_count = Signal(16, reset=2**16-1) + por_done = Signal() + self.comb += self.cd_por.clk.eq(clk48) + self.comb += por_done.eq(por_count == 0) + self.sync.por += If(~por_done, por_count.eq(por_count - 1)) + + # PLL + self.submodules.pll = pll = ECP5PLL() + self.comb += pll.reset.eq(~por_done | self.rst) + pll.register_clkin(clk48, 48e6) + pll.create_clkout(self.cd_sys, sys_clk_freq) + + if sdram_rate == "1:2": + self.clock_domains.cd_sys2x = ClockDomain() + self.clock_domains.cd_sys2x_ps = ClockDomain() + pll.create_clkout(self.cd_sys2x, 2*sys_clk_freq) + pll.create_clkout(self.cd_sys2x_ps, 2*sys_clk_freq, phase=180) + elif sdram_rate == "1:4": + self.clock_domains.cd_sys2x = ClockDomain() + self.clock_domains.cd_sys4x = ClockDomain() + self.clock_domains.cd_sys4x_ps = ClockDomain() + pll.create_clkout(self.cd_sys2x, 2*sys_clk_freq) + pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq) + pll.create_clkout(self.cd_sys4x_ps, 4*sys_clk_freq, phase=180) + else: + self.clock_domains.cd_sys_ps = ClockDomain() + pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90) + + if sdram_rate == "1:2": + sdram_clk = ClockSignal("sys2x_ps") + elif sdram_rate == "1:4": + sdram_clk = ClockSignal("sys4x_ps") + else: + sdram_clk = ClockSignal("sys_ps") + + self.specials += DDROutput(1, 0, platform.request("sdram_clock"), sdram_clk) + pll2 = ECP5PLL() + self.submodules.pll2 = pll2 + pll2.register_clkin(clk48, 48e6) + pll2.create_clkout(self.cd_video, 25e6) + pll2.create_clkout(self.cd_video5x, 125e6) + + self.clock_domains.cd_usb_12 = ClockDomain() + self.clock_domains.cd_usb = ClockDomain() + self.clock_domains.cd_usb_48 = ClockDomain() + self.cd_usb_48 = self.cd_usb + pll2.create_clkout(self.cd_usb, 48e6) + pll2.create_clkout(self.cd_usb_12, 12e6) + self.comb += pll2.reset.eq(~por_done) + +# BaseSoC ------------------------------------------------------------------------------------------ + +class BaseSoC(SoCCore): + mem_map = {**SoCCore.mem_map, **{ + "usb_ohci": 0xc0000000, + }} + def __init__(self, revision="v1", device="45F", sdram_rate="1:2", + sys_clk_freq=int(40e6), toolchain="trellis", with_led_chaser=True, with_usb_host=False, **kwargs): + platform = ld_schoko.Platform(revision=revision, device=device ,toolchain=toolchain) + + # CRG -------------------------------------------------------------------------------------- + self.submodules.crg = _CRG(platform, sys_clk_freq, sdram_rate=sdram_rate) + + # SoCCore ---------------------------------------------------------------------------------- + SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on Schoko", **kwargs) + + # DRAM ------------------------------------------------------------------------------------- + if not self.integrated_main_ram_size: + if sdram_rate == "1:2": + sdrphy_cls = HalfRateGENSDRPHY + elif sdram_rate == "1:4": + sdrphy_cls = QuarterRateGENSDRPHY + else: + sdrphy_cls = GENSDRPHY + + self.submodules.sdrphy = sdrphy_cls(platform.request("sdram"), sys_clk_freq) + self.add_sdram("sdram", + phy = self.sdrphy, + module = W9825G6KH6(sys_clk_freq, sdram_rate), + l2_cache_size = kwargs.get("l2_size", 8192) + ) + + # USB Host --------------------------------------------------------------------------------- + if with_usb_host: + self.submodules.usb_ohci = USBOHCI(platform, platform.request("usb_host"), usb_clk_freq=int(48e6)) + self.bus.add_slave("usb_ohci_ctrl", self.usb_ohci.wb_ctrl, region=SoCRegion(origin=self.mem_map["usb_ohci"], size=0x100000, cached=False)) + self.dma_bus.add_master("usb_ohci_dma", master=self.usb_ohci.wb_dma) + self.comb += self.cpu.interrupt[16].eq(self.usb_ohci.interrupt) + + # VGA Framebuffer -------------------------------------------------------------------------- + #self.submodules.videophy = VideoVGAPHY(platform.request("vga"), + # clock_domain="video") + #self.add_video_framebuffer(phy=self.videophy, timings="640x480@60Hz", + # clock_domain="video", format="rgb565") + + # VGA Terminal ------------------------------------------------------------------------------------- + #self.submodules.videophy = VideoVGAPHY(platform.request("vga"), + # clock_domain="video") + #self.add_video_terminal(phy=self.videophy, timings="640x480@60Hz", + # clock_domain="video") + + # DDMI Framebuffer ------------------------------------------------------------------------------------- + self.submodules.videophy = VideoHDMIPHY(platform.request("ddmi"), + clock_domain="video") + self.add_video_framebuffer(phy=self.videophy, timings="640x480@60Hz", + clock_domain="video", format="rgb565") + + # DDMI Terminal ------------------------------------------------------------------------------------- + #self.submodules.videophy = VideoHDMIPHY(platform.request("ddmi"), + # clock_domain="video") + #self.add_video_terminal(phy=self.videophy, timings="640x480@60Hz", + # clock_domain="video") + + # Leds ------------------------------------------------------------------------------------- + if with_led_chaser: + self.submodules.leds = LedChaser( + pads = platform.request_all("user_led"), + sys_clk_freq = sys_clk_freq) + +# Build -------------------------------------------------------------------------------------------- + +def main(): + from litex.soc.integration.soc import LiteXSoCArgumentParser + parser = LiteXSoCArgumentParser(description="LiteX SoC on Schoko") + target_group = parser.add_argument_group(title="Target options") + target_group.add_argument("--build", action="store_true", help="Build design.") + target_group.add_argument("--load", action="store_true", help="Load bitstream to SRAM.") + target_group.add_argument("--flash", action="store_true", help="Flash bitstream to MMOD.") + target_group.add_argument("--toolchain", default="trellis", help="FPGA toolchain (trellis or diamond).") + target_group.add_argument("--sys-clk-freq", default=50e6, help="System clock frequency.") + target_group.add_argument("--revision", default="v1", help="Board Revision (v1, v2).") + target_group.add_argument("--device", default="45F", help="ECP5 device (25F, 45F or 85F).") + target_group.add_argument("--cable", default="usb-blaster", help="Specify an openFPGALoader cable.") + target_group.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support.") + target_group.add_argument("--with-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support.") + target_group.add_argument("--with-usb-host", action="store_true", help="Enable USB host support.") + builder_args(parser) + soc_core_args(parser) + trellis_args(parser) + args = parser.parse_args() + + soc = BaseSoC( + toolchain = args.toolchain, + revision = args.revision, + device = args.device, + sys_clk_freq = int(float(args.sys_clk_freq)), + **soc_core_argdict(args)) + + if args.with_sdcard: + soc.add_sdcard() + + if args.with_spi_sdcard: + soc.add_spi_sdcard() + + builder = Builder(soc, **builder_argdict(args)) + builder_kargs = trellis_argdict(args) if args.toolchain == "trellis" else {} + + if args.build: + builder.build(**builder_kargs) + + if args.load: + prog = soc.platform.create_programmer(args.cable) + prog.load_bitstream(builder.get_bitstream_filename(mode="sram")) + + if args.flash: + prog = soc.platform.create_programmer(args.cable) + prog.flash(0x100000, builder.get_bitstream_filename(mode="sram")) + +if __name__ == "__main__": + main()