mirror of
https://github.com/litex-hub/litex-boards.git
synced 2025-01-03 03:43:36 -05:00
00ff61baa9
rst was not directly assigned/used on reset_less clock domains, so reset_less property was not really useful. With the changes on stream.CDC, having a rst (Even fixed at 0) is now mandatory on clock domains involved in the CDC, so this also fixes targets.
130 lines
5.1 KiB
Python
Executable file
130 lines
5.1 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# This file is part of LiteX-Boards.
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#
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# Copyright (c) 2019 Antti Lukats <antti.lukats@gmail.com>
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# Copyright (c) 2019 msloniewski <marcin.sloniewski@gmail.com>
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# Copyright (c) 2019 Florent Kermarrec <florent@enjoy-digital.fr>
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# SPDX-License-Identifier: BSD-2-Clause
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from migen import *
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from litex_boards.platforms import c10lprefkit
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from litex.soc.cores.clock import Cyclone10LPPLL
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from litex.soc.integration.soc_core import *
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from litex.soc.integration.builder import *
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from litex.soc.cores.led import LedChaser
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from litedram.modules import MT48LC16M16
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from litedram.phy import GENSDRPHY
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from liteeth.phy.mii import LiteEthPHYMII
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from litex.soc.cores.hyperbus import HyperRAM
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# CRG ----------------------------------------------------------------------------------------------
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class _CRG(Module):
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def __init__(self, platform, sys_clk_freq):
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self.rst = Signal()
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self.clock_domains.cd_sys = ClockDomain()
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self.clock_domains.cd_sys_ps = ClockDomain()
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# # #
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# Clk / Rst
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clk12 = platform.request("clk12")
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# PLL
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self.submodules.pll = pll = Cyclone10LPPLL(speedgrade="-A7")
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self.comb += pll.reset.eq(~platform.request("cpu_reset") | self.rst)
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pll.register_clkin(clk12, 12e6)
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pll.create_clkout(self.cd_sys, sys_clk_freq)
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pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90)
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# SDRAM clock
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self.comb += platform.request("sdram_clock").eq(self.cd_sys_ps.clk)
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# BaseSoC ------------------------------------------------------------------------------------------
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class BaseSoC(SoCCore):
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mem_map = {
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"hyperram": 0x20000000,
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}
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mem_map.update(SoCCore.mem_map)
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def __init__(self, sys_clk_freq=int(50e6), with_led_chaser=True,
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with_ethernet=False, with_etherbone=False,
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**kwargs):
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platform = c10lprefkit.Platform()
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# SoCCore ----------------------------------------------------------------------------------
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SoCCore.__init__(self, platform, sys_clk_freq,
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ident = "LiteX SoC on C10 LP RefKit",
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**kwargs)
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# CRG --------------------------------------------------------------------------------------
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self.submodules.crg = _CRG(platform, sys_clk_freq)
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# HyperRam ---------------------------------------------------------------------------------
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self.submodules.hyperram = HyperRAM(platform.request("hyperram"))
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self.add_wb_slave(self.mem_map["hyperram"], self.hyperram.bus)
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self.add_memory_region("hyperram", self.mem_map["hyperram"], 8*1024*1024)
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# SDR SDRAM --------------------------------------------------------------------------------
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if not self.integrated_main_ram_size:
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self.submodules.sdrphy = GENSDRPHY(platform.request("sdram"), sys_clk_freq)
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self.add_sdram("sdram",
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phy = self.sdrphy,
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module = MT48LC16M16(sys_clk_freq, "1:1"),
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l2_cache_size = kwargs.get("l2_size", 8192)
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)
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# Ethernet / Etherbone ---------------------------------------------------------------------
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if with_ethernet or with_etherbone:
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self.submodules.ethphy = LiteEthPHYMII(
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clock_pads = self.platform.request("eth_clocks"),
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pads = self.platform.request("eth"))
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if with_ethernet:
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self.add_ethernet(phy=self.ethphy)
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if with_etherbone:
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self.add_etherbone(phy=self.ethphy)
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# Leds -------------------------------------------------------------------------------------
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if with_led_chaser:
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self.submodules.leds = LedChaser(
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pads = platform.request_all("user_led"),
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sys_clk_freq = sys_clk_freq)
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# Build --------------------------------------------------------------------------------------------
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def main():
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from litex.soc.integration.soc import LiteXSoCArgumentParser
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parser = LiteXSoCArgumentParser(description="LiteX SoC on C10 LP RefKit")
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target_group = parser.add_argument_group(title="Target options")
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target_group.add_argument("--build", action="store_true", help="Build bitstream.")
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target_group.add_argument("--load", action="store_true", help="Load bitstream.")
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target_group.add_argument("--sys-clk-freq", default=50e6, help="System clock frequency.")
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target_group.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support.")
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target_group.add_argument("--with-etherbone", action="store_true", help="Enable Etherbone support.")
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builder_args(parser)
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soc_core_args(parser)
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args = parser.parse_args()
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soc = BaseSoC(
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sys_clk_freq = int(float(args.sys_clk_freq)),
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with_ethernet = args.with_ethernet,
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with_etherbone = args.with_etherbone,
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**soc_core_argdict(args)
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)
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builder = Builder(soc, **builder_argdict(args))
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builder.build(run=args.build)
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if args.load:
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prog = soc.platform.create_programmer()
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prog.load_bitstream(builder.get_bitstream_filename(mode="sram"))
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if __name__ == "__main__":
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main()
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