diff --git a/litex/boards/platforms/arty.py b/litex/boards/platforms/arty.py index 320594487..7e72b4a90 100644 --- a/litex/boards/platforms/arty.py +++ b/litex/boards/platforms/arty.py @@ -265,7 +265,8 @@ class Platform(XilinxPlatform): self.toolchain.additional_commands = \ ["write_cfgmem -force -format bin -interface spix4 -size 16 " "-loadbit \"up 0x0 {build_name}.bit\" -file {build_name}.bin"] - self.add_platform_command("set_property INTERNAL_VREF 0.675 [get_iobanks 34]") + if toolchain == "vivado": # FIXME + self.add_platform_command("set_property INTERNAL_VREF 0.675 [get_iobanks 34]") def create_programmer(self): bscan_spi = "bscan_spi_xc7a100t.bit" if "xc7a100t" in self.device else "bscan_spi_xc7a35t.bit" @@ -273,4 +274,6 @@ class Platform(XilinxPlatform): def do_finalize(self, fragment): XilinxPlatform.do_finalize(self, fragment) - self.add_period_constraint(self.lookup_request("clk100", loose=True), 1e9/100e6) + from litex.build.xilinx import symbiflow + if not isinstance(self.toolchain, symbiflow.SymbiflowToolchain): # FIXME + self.add_period_constraint(self.lookup_request("clk100", loose=True), 1e9/100e6) diff --git a/litex/boards/targets/arty.py b/litex/boards/targets/arty.py index fe6c8f522..1116fa2f4 100755 --- a/litex/boards/targets/arty.py +++ b/litex/boards/targets/arty.py @@ -1,6 +1,7 @@ #!/usr/bin/env python3 # This file is Copyright (c) 2015-2019 Florent Kermarrec +# This file is Copyright (c) 2020 Antmicro # License: BSD import os @@ -25,7 +26,7 @@ from liteeth.phy.mii import LiteEthPHYMII # CRG ---------------------------------------------------------------------------------------------- class _CRG(Module): - def __init__(self, platform, sys_clk_freq): + def __init__(self, platform, sys_clk_freq, toolchain): self.clock_domains.cd_sys = ClockDomain() self.clock_domains.cd_sys2x = ClockDomain(reset_less=True) self.clock_domains.cd_sys4x = ClockDomain(reset_less=True) @@ -35,34 +36,49 @@ class _CRG(Module): # # # - self.submodules.pll = pll = S7PLL(speedgrade=-1) - self.comb += pll.reset.eq(~platform.request("cpu_reset")) - pll.register_clkin(platform.request("clk100"), 100e6) - pll.create_clkout(self.cd_sys, sys_clk_freq) - 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_dqs, 4*sys_clk_freq, phase=90) - pll.create_clkout(self.cd_clk200, 200e6) - pll.create_clkout(self.cd_eth, 25e6) + if toolchain == "vivado": + self.submodules.pll = pll = S7PLL(speedgrade=-1) + self.comb += pll.reset.eq(~platform.request("cpu_reset")) + pll.register_clkin(platform.request("clk100"), 100e6) + pll.create_clkout(self.cd_sys, sys_clk_freq) + 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_dqs, 4*sys_clk_freq, phase=90) + pll.create_clkout(self.cd_clk200, 200e6) + pll.create_clkout(self.cd_eth, 25e6) - self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_clk200) + self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_clk200) - self.comb += platform.request("eth_ref_clk").eq(self.cd_eth.clk) + self.comb += platform.request("eth_ref_clk").eq(self.cd_eth.clk) + elif toolchain == "symbiflow": # FIXME + clk100_ibuf = Signal() + clk100_buf = Signal() + self.specials += Instance("IBUF", i_I=platform.request("clk100"), o_O=clk100_ibuf) + self.specials += Instance("BUFG", i_I=clk100_ibuf, o_O=clk100_buf) + + self.submodules.pll = pll = S7PLL(speedgrade=-1) + self.comb += pll.reset.eq(~platform.request("cpu_reset")) + pll.register_clkin(clk100_buf, 100e6) + pll.create_clkout(self.cd_sys, sys_clk_freq) + + platform.add_period_constraint(clk100_buf, 1e9/100e6) + platform.add_period_constraint(self.cd_sys.clk, 1e9/sys_clk_freq) + platform.add_false_path_constraints(clk100_buf, self.cd_sys.clk) # BaseSoC ------------------------------------------------------------------------------------------ class BaseSoC(SoCCore): - def __init__(self, sys_clk_freq=int(100e6), with_ethernet=False, with_etherbone=False, **kwargs): - platform = arty.Platform() + def __init__(self, toolchain, sys_clk_freq=int(100e6), with_ethernet=False, with_etherbone=False, **kwargs): + platform = arty.Platform(toolchain=toolchain) # SoCCore ---------------------------------------------------------------------------------- SoCCore.__init__(self, platform, clk_freq=sys_clk_freq, **kwargs) # CRG -------------------------------------------------------------------------------------- - self.submodules.crg = _CRG(platform, sys_clk_freq) + self.submodules.crg = _CRG(platform, sys_clk_freq, toolchain) # DDR3 SDRAM ------------------------------------------------------------------------------- - if not self.integrated_main_ram_size: + if not self.integrated_main_ram_size and toolchain != "symbiflow": # FIXME self.submodules.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"), memtype = "DDR3", nphases = 4, @@ -102,6 +118,7 @@ def main(): parser = argparse.ArgumentParser(description="LiteX SoC on Arty A7") parser.add_argument("--build", action="store_true", help="Build bitstream") parser.add_argument("--load", action="store_true", help="Load bitstream") + parser.add_argument("--toolchain", default="vivado", help="Gateware toolchain to use, vivado (default) or symbiflow") builder_args(parser) soc_sdram_args(parser) vivado_build_args(parser) @@ -110,10 +127,11 @@ def main(): args = parser.parse_args() assert not (args.with_ethernet and args.with_etherbone) - soc = BaseSoC(with_ethernet=args.with_ethernet, with_etherbone=args.with_etherbone, + soc = BaseSoC(args.toolchain, with_ethernet=args.with_ethernet, with_etherbone=args.with_etherbone, **soc_sdram_argdict(args)) builder = Builder(soc, **builder_argdict(args)) - builder.build(**vivado_build_argdict(args), run=args.build) + builder_kwargs = vivado_build_argdict(args) if args.toolchain == "vivado" else {} + builder.build(**builder_kwargs, run=args.build) if args.load: prog = soc.platform.create_programmer() diff --git a/litex/boards/targets/arty_symbiflow.py b/litex/boards/targets/arty_symbiflow.py deleted file mode 100755 index 394ffe722..000000000 --- a/litex/boards/targets/arty_symbiflow.py +++ /dev/null @@ -1,78 +0,0 @@ -#!/usr/bin/env python3 - -# This file is Copyright (c) 2015-2019 Florent Kermarrec -# This file is Copyright (c) 2020 Antmicro -# License: BSD - -import os -import argparse - -from migen import * - -from litex.boards.platforms import arty -from litex.build.xilinx.symbiflow import symbiflow_build_args, symbiflow_build_argdict - -from litex.soc.cores.clock import * -from litex.soc.integration.soc_core import * -from litex.soc.integration.soc_sdram import * -from litex.soc.integration.builder import * -from litex.soc.cores.led import LedChaser - -# CRG ---------------------------------------------------------------------------------------------- - -class _CRG(Module): - def __init__(self, platform, sys_clk_freq): - self.clock_domains.cd_sys = ClockDomain() - - clk100_ibuf = Signal() - clk100_buf = Signal() - self.specials += Instance("IBUF", i_I=platform.request("clk100"), o_O=clk100_ibuf) - self.specials += Instance("BUFG", i_I=clk100_ibuf, o_O=clk100_buf) - - self.submodules.pll = pll = S7PLL(speedgrade=-1) - self.comb += pll.reset.eq(~platform.request("cpu_reset")) - pll.register_clkin(clk100_buf, 100e6) - pll.create_clkout(self.cd_sys, sys_clk_freq) - - platform.add_period_constraint(clk100_buf, 1e9/100e6) - platform.add_period_constraint(self.cd_sys.clk, 1e9/sys_clk_freq) - platform.add_false_path_constraints(clk100_buf, self.cd_sys.clk) - -# BaseSoC ------------------------------------------------------------------------------------------ - -class BaseSoC(SoCCore): - def __init__(self, sys_clk_freq=int(60e6), with_ethernet=False, with_etherbone=False, **kwargs): - platform = arty.Platform(toolchain="symbiflow") - - # SoCCore ---------------------------------------------------------------------------------- - SoCCore.__init__(self, platform, clk_freq=sys_clk_freq, **kwargs) - - # CRG -------------------------------------------------------------------------------------- - self.submodules.crg = _CRG(platform, sys_clk_freq) - - self.submodules.leds = LedChaser( - pads = Cat(*[platform.request("user_led", i) for i in range(4)]), - sys_clk_freq = sys_clk_freq) - self.add_csr("leds") - -# Build -------------------------------------------------------------------------------------------- - -def main(): - parser = argparse.ArgumentParser(description="LiteX SoC on Arty A7") - parser.add_argument("--build", action="store_true", help="Build bitstream") - parser.add_argument("--load", action="store_true", help="Load bitstream") - builder_args(parser) - soc_core_args(parser) - symbiflow_build_args(parser) - args = parser.parse_args() - - soc = BaseSoC(**soc_core_argdict(args)) - builder = Builder(soc, **builder_argdict(args)) - builder.build(**symbiflow_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")) - -if __name__ == "__main__": - main()