litex-boards/litex_boards/targets/seeedstudio_spartan_edge_ac...

134 lines
5.6 KiB
Python
Executable File

#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2022 Primesh Pinto <primeshp@gmail.com>
# SPDX-License-Identifier: BSD-2-Clause
from migen import *
from litex.build.generic_platform import *
from litex.build.xilinx.vivado import vivado_build_args, vivado_build_argdict
from litex_boards.platforms import seeedstudio_spartan_edge_accelerator
from litex.soc.cores.clock import *
from litex.soc.integration.soc import SoCRegion
from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser,WS2812
from litex.soc.cores.video import *
# Serial Port --------------------------------------------------------------------------------------
_serial_io = [
# Use J10 connectors 0/1 IOs + GND.
("serial", 0,
Subsignal("tx", Pins("j10:j10_0")),
Subsignal("rx", Pins("j10:j10_1")),
IOStandard("LVCMOS33")
),
]
# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
def __init__(self, platform, sys_clk_freq, with_video_pll):
self.rst = Signal()
self.clock_domains.cd_sys = ClockDomain()
self.clock_domains.cd_hdmi = ClockDomain()
self.clock_domains.cd_hdmi5x = ClockDomain()
# # #
clk100 = platform.request("clk100")
rst_n = platform.request("rst_n")
self.submodules.pll = pll = S7PLL(speedgrade=-1)
self.comb += pll.reset.eq(~rst_n | self.rst)
pll.register_clkin(clk100, sys_clk_freq)
pll.create_clkout(self.cd_sys, sys_clk_freq)
if with_video_pll:
self.submodules.video_pll = video_pll = S7PLL(speedgrade=-1)
video_pll.reset.eq(~rst_n | self.rst)
video_pll.register_clkin(clk100, 100e6)
video_pll.create_clkout(self.cd_hdmi, 25e6)
video_pll.create_clkout(self.cd_hdmi5x, 5*25e6)
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(100e6),
with_led_chaser = True,
with_jtagbone = False,
with_video_terminal = True,
with_neopixel = False,
**kwargs):
platform = seeedstudio_spartan_edge_accelerator.Platform()
platform.add_extension(_serial_io)
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq, with_video_pll=with_video_terminal)
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq, ident = "LiteX SoC on Seeedstudio Spartan Edge Accelerator", **kwargs)
# Jtagbone ---------------------------------------------------------------------------------
if with_jtagbone:
self.add_jtagbone()
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.submodules.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq
)
# Video ------------------------------------------------------------------------------------
if with_video_terminal:
self.submodules.videophy = VideoHDMIPHY(platform.request("hdmi"), clock_domain="hdmi")
self.add_video_colorbars(phy=self.videophy, timings="640x480@75Hz", clock_domain="hdmi")
#self.add_video_terminal(phy=self.videophy, timings="640x480@75Hz", clock_domain="hdmi") #Fixme Not enough BRAM
# Neopixel ---------------------------------------------------------------------------------
# To test Nexpixel with LiteX BIOS:
# - mem_list (to get ws2812_base).
# - mem_write <ws2812_base> 0x00100000
if with_neopixel:
self.submodules.ws2812 = WS2812(platform.request("rgb"), nleds=2, sys_clk_freq=sys_clk_freq)
self.bus.add_slave(name="ws2812", slave=self.ws2812.bus, region=SoCRegion(size=2*4))
# Build --------------------------------------------------------------------------------------------
def main():
from litex.soc.integration.soc import LiteXSoCArgumentParser
parser = LiteXSoCArgumentParser(description="LiteX SoC on Spartan Edge Accelerator")
target_group = parser.add_argument_group(title="Target options")
target_group.add_argument("--build", action="store_true", help="Build bitstream.")
target_group.add_argument("--sys-clk-freq", default=100e6, help="System clock frequency.")
target_group.add_argument("--with-jtagbone", action="store_true", help="Enable Jtagbone support.")
target_group.add_argument("--with-video-terminal", action="store_true", help="Enable Video Colorbars (HDMI).")
target_group.add_argument("--with-neopixel", action="store_true", help="Enable onboard 2 Neopixels Leds.")
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_jtagbone = args.with_jtagbone,
with_video_terminal = args.with_video_terminal,
with_neopixel = args.with_neopixel,
**soc_core_argdict(args)
)
builder = Builder(soc, **builder_argdict(args))
builder_kwargs = vivado_build_argdict(args)
builder.build(**builder_kwargs, run=args.build)
if __name__ == "__main__":
main()