bench: add xcu1525 target.

bench/xcu1525.py

+#!/usr/bin/env python3
+
+#
+# This file is part of LiteDRAM.
+#
+# Copyright (c) 2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# SPDX-License-Identifier: BSD-2-Clause
+
+import os
+import argparse
+
+from migen import *
+
+from litex_boards.platforms import xcu1525
+
+from litex.soc.cores.clock import *
+from litex.soc.interconnect.csr import *
+from litex.soc.integration.soc_core import *
+from litex.soc.integration.soc_sdram import *
+from litex.soc.integration.builder import *
+
+from litedram.modules import MT40A512M8
+from litedram.phy import usddrphy
+
+
+# CRG ----------------------------------------------------------------------------------------------
+
+class _CRG(Module, AutoCSR):
+    def __init__(self, platform, sys_clk_freq, ddram_channel):
+        self.clock_domains.cd_sys_pll = ClockDomain()
+        self.clock_domains.cd_sys     = ClockDomain()
+        self.clock_domains.cd_sys4x   = ClockDomain(reset_less=True)
+        self.clock_domains.cd_pll4x   = ClockDomain(reset_less=True)
+        self.clock_domains.cd_idelay  = ClockDomain()
+        self.clock_domains.cd_uart    = ClockDomain()
+
+        # # #
+
+        self.submodules.main_pll = main_pll = USPMMCM(speedgrade=-2)
+        main_pll.register_clkin(platform.request("clk300", ddram_channel), 300e6)
+        main_pll.create_clkout(self.cd_sys_pll, sys_clk_freq)
+        main_pll.create_clkout(self.cd_idelay, 500e6, with_reset=False)
+        main_pll.create_clkout(self.cd_uart,   100e6)
+        main_pll.expose_drp()
+
+        self.submodules.pll = pll = USPMMCM(speedgrade=-2)
+        self.comb += pll.reset.eq(~main_pll.locked)
+        pll.register_clkin(self.cd_sys_pll.clk, sys_clk_freq)
+        pll.create_clkout(self.cd_pll4x,  sys_clk_freq*4, buf=None, with_reset=False)
+
+        self.specials += [
+            Instance("BUFGCE_DIV", name="main_bufgce_div",
+                p_BUFGCE_DIVIDE=4,
+                i_CE=1, i_I=self.cd_pll4x.clk, o_O=self.cd_sys.clk),
+            Instance("BUFGCE", name="main_bufgce",
+                i_CE=1, i_I=self.cd_pll4x.clk, o_O=self.cd_sys4x.clk),
+            AsyncResetSynchronizer(self.cd_idelay, ~pll.locked),
+        ]
+
+        self.submodules.idelayctrl = USIDELAYCTRL(cd_ref=self.cd_idelay, cd_sys=self.cd_sys)
+
+        sys_clk_counter = Signal(32)
+        self.sync += sys_clk_counter.eq(sys_clk_counter + 1)
+        self.sys_clk_counter = CSRStatus(32)
+        self.comb += self.sys_clk_counter.status.eq(sys_clk_counter)
+
+# Bench SoC ----------------------------------------------------------------------------------------
+
+class BenchSoC(SoCCore):
+    def __init__(self, uart="crossover", sys_clk_freq=int(125e6), ddram_channel=0, with_bist=False):
+        platform = xcu1525.Platform()
+
+        # SoCCore ----------------------------------------------------------------------------------
+        SoCCore.__init__(self, platform, clk_freq=sys_clk_freq,
+            integrated_rom_size = 0x10000,
+            integrated_rom_mode = "rw",
+            csr_data_width      = 32,
+            uart_name           = uart)
+
+        # CRG --------------------------------------------------------------------------------------
+        self.submodules.crg = _CRG(platform, sys_clk_freq, ddram_channel)
+        self.add_csr("crg")
+
+        # DDR4 SDRAM -------------------------------------------------------------------------------
+        self.submodules.ddrphy = usddrphy.USPDDRPHY(platform.request("ddram", ddram_channel),
+            memtype          = "DDR4",
+            sys_clk_freq     = sys_clk_freq,
+            iodelay_clk_freq = 500e6)
+        self.add_csr("ddrphy")
+        self.add_sdram("sdram",
+            phy    = self.ddrphy,
+            module = MT40A512M8(sys_clk_freq, "1:4"),
+            origin = self.mem_map["main_ram"],
+            size   = 0x40000000,
+        )
+        # Workadound for Vivado 2018.2 DRC, can be ignored and probably fixed on newer Vivado versions.
+        platform.add_platform_command("set_property SEVERITY {{Warning}} [get_drc_checks PDCN-2736]")
+
+        # BIST -------------------------------------------------------------------------------------
+        from litedram.frontend.bist import  LiteDRAMBISTGenerator, LiteDRAMBISTChecker
+        self.submodules.sdram_generator = LiteDRAMBISTGenerator(self.sdram.crossbar.get_port())
+        self.add_csr("sdram_generator")
+        self.submodules.sdram_checker = LiteDRAMBISTChecker(self.sdram.crossbar.get_port())
+        self.add_csr("sdram_checker")
+
+        # UARTBone ---------------------------------------------------------------------------------
+        if uart != "serial":
+            self.add_uartbone(name="serial", clk_freq=100e6, baudrate=115200, cd="uart")
+
+        # Leds -------------------------------------------------------------------------------------
+        from litex.soc.cores.led import LedChaser
+        self.submodules.leds = LedChaser(
+            pads         = platform.request_all("user_led"),
+            sys_clk_freq = sys_clk_freq)
+        self.add_csr("leds")
+
+# Main ---------------------------------------------------------------------------------------------
+
+def main():
+    parser = argparse.ArgumentParser(description="LiteDRAM Bench on XCU1525")
+    parser.add_argument("--uart",          default="crossover", help="Selected UART: crossover (default) or serial")
+    parser.add_argument("--build",         action="store_true", help="Build bitstream")
+    parser.add_argument("--ddram-channel", default="0",         help="DDRAM channel")
+    parser.add_argument("--with-bist",     action="store_true", help="Add BIST Generator/Checker")
+    parser.add_argument("--load",          action="store_true", help="Load bitstream")
+    parser.add_argument("--load-bios",     action="store_true", help="Load BIOS")
+    parser.add_argument("--set-sys-clk",   default=None,        help="Set sys_clk")
+    parser.add_argument("--test",          action="store_true", help="Run Full Bench")
+    args = parser.parse_args()
+
+    soc     = BenchSoC(uart=args.uart, ddram_channel=int(args.ddram_channel, 0), with_bist=args.with_bist)
+    builder = Builder(soc, csr_csv="csr.csv")
+    builder.build(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 args.load_bios:
+        from common import us_load_bios
+        us_load_bios("build/xcu1525/software/bios/bios.bin")
+
+    if args.set_sys_clk is not None:
+        from common import us_set_sys_clk
+        us_set_sys_clk(clk_freq=float(args.config), vco_freq=soc.crg.main_pll.compute_config()["vco"])
+
+    if args.test:
+        from common import us_bench_test
+        us_bench_test(
+            freq_min      = 80e6,
+            freq_max      = 180e6,
+            freq_step     = 1e6,
+            vco_freq      = soc.crg.pll.compute_config()["vco"],
+            bios_filename = "build/xcu1525/software/bios/bios.bin")
+
+if __name__ == "__main__":
+    main()