#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2022 Ilia Sergachev <ilia@sergachev.ch>
# SPDX-License-Identifier: BSD-2-Clause
import argparse
from migen import *
from litex_boards.platforms import xilinx_zcu216
from litex.build.xilinx.vivado import vivado_build_args, vivado_build_argdict
from litex.build.tools import write_to_file
from litex.soc.interconnect import axi
from litex.soc.interconnect import wishbone
from litex.soc.cores.clock import *
from litex.soc.integration.soc_core import *
from litex.soc.integration.soc import SoCRegion
from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser
# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
def __init__(self, platform, sys_clk_freq, use_ps7_clk=False):
self.rst = Signal()
self.clock_domains.cd_sys = ClockDomain()
# # #
if use_ps7_clk:
self.comb += ClockSignal("sys").eq(ClockSignal("ps"))
self.comb += ResetSignal("sys").eq(ResetSignal("ps") | self.rst)
else:
self.submodules.pll = pll = S7PLL(speedgrade=-1)
self.comb += pll.reset.eq(self.rst)
pll.register_clkin(platform.request(platform.default_clk_name), platform.default_clk_freq)
pll.create_clkout(self.cd_sys, sys_clk_freq)
# Ignore sys_clk to pll.clkin path created by SoC's rst.
platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin)
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
mem_map = {"csr": 0xA000_0000} # default GP0 address on ZynqMP
def __init__(self, sys_clk_freq, with_led_chaser=True, **kwargs):
platform = xilinx_zcu216.Platform()
if kwargs.get("cpu_type", None) == "zynqmp":
kwargs['integrated_sram_size'] = 0
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq,
ident = "LiteX SoC on ZCU216",
**kwargs)
# ZynqMP Integration -----------------------------------------------------------------------
if kwargs.get("cpu_type", None) == "zynqmp":
# generated from board xml presets
self.cpu.config.update({
'PSU__CRF_APB__ACPU_CTRL__FREQMHZ': '1200',
'PSU__DDRC__BANK_ADDR_COUNT': '2',
'PSU__DDRC__BG_ADDR_COUNT': '1',
'PSU__DDRC__BRC_MAPPING': 'ROW_BANK_COL',
'PSU__DDRC__BUS_WIDTH': '64 Bit',
'PSU__DDRC__CL': '15',
'PSU__DDRC__CLOCK_STOP_EN': '0',
'PSU__DDRC__COL_ADDR_COUNT': '10',
'PSU__DDRC__COMPONENTS': 'UDIMM',
'PSU__DDRC__CWL': '11',
'PSU__DDRC__DDR4_ADDR_MAPPING': '0',
'PSU__DDRC__DDR4_CAL_MODE_ENABLE': '0',
'PSU__DDRC__DDR4_CRC_CONTROL': '0',
'PSU__DDRC__DDR4_T_REF_MODE': '0',
'PSU__DDRC__DDR4_T_REF_RANGE': 'Normal (0-85)',
'PSU__DDRC__DEVICE_CAPACITY': '8192 MBits',
'PSU__DDRC__DIMM_ADDR_MIRROR': '0',
'PSU__DDRC__DM_DBI': 'DM_NO_DBI',
'PSU__DDRC__DRAM_WIDTH': '16 Bits',
'PSU__DDRC__ECC': 'Disabled',
'PSU__DDRC__FGRM': '1X',
'PSU__DDRC__LP_ASR': 'manual normal',
'PSU__DDRC__MEMORY_TYPE': 'DDR 4',
'PSU__DDRC__PARITY_ENABLE': '0',
'PSU__DDRC__PER_BANK_REFRESH': '0',
'PSU__DDRC__PHY_DBI_MODE': '0',
'PSU__DDRC__RANK_ADDR_COUNT': '0',
'PSU__DDRC__ROW_ADDR_COUNT': '16',
'PSU__DDRC__SELF_REF_ABORT': '0',
'PSU__DDRC__SPEED_BIN': 'DDR4_2133P',
'PSU__DDRC__STATIC_RD_MODE': '0',
'PSU__DDRC__TRAIN_DATA_EYE': '1',
'PSU__DDRC__TRAIN_READ_GATE': '1',
'PSU__DDRC__TRAIN_WRITE_LEVEL': '1',
'PSU__DDRC__T_FAW': '30.0',
'PSU__DDRC__T_RAS_MIN': '33',
'PSU__DDRC__T_RC': '46.5',
'PSU__DDRC__T_RCD': '15',
'PSU__DDRC__T_RP': '15',
'PSU__DDRC__VREF': '1',
'PSU__UART0__PERIPHERAL__ENABLE': '1',
'PSU__UART0__PERIPHERAL__IO': 'MIO 18 .. 19',
})
# Connect Zynq AXI master to the SoC
wb_gp0 = wishbone.Interface()
self.submodules += axi.AXI2Wishbone(
axi = self.cpu.add_axi_gp_master(),
wishbone = wb_gp0,
base_address = self.mem_map["csr"])
self.add_wb_master(wb_gp0)
self.bus.add_region("sram", SoCRegion(
origin=self.cpu.mem_map["sram"],
size=2 * 1024 * 1024 * 1024) # DDR
)
self.bus.add_region("rom", SoCRegion(
origin=self.cpu.mem_map["rom"],
size=512 * 1024 * 1024 // 8,
linker=True)
)
self.constants['CONFIG_CLOCK_FREQUENCY'] = 1200000000
use_ps7_clk = True
else:
use_ps7_clk = False
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq, use_ps7_clk)
# LEDs -------------------------------------------------------------------------------------
if with_led_chaser:
self.submodules.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
def finalize(self, *args, **kwargs):
super(BaseSoC, self).finalize(*args, **kwargs)
if self.cpu_type != "zynqmp":
return
libxil_path = os.path.join(self.builder.software_dir, 'libxil')
os.makedirs(os.path.realpath(libxil_path), exist_ok=True)
lib = os.path.join(libxil_path, 'embeddedsw')
if not os.path.exists(lib):
os.system("git clone --depth 1 https://github.com/Xilinx/embeddedsw {}".format(lib))
os.makedirs(os.path.realpath(self.builder.include_dir), exist_ok=True)
for header in [
'XilinxProcessorIPLib/drivers/uartps/src/xuartps_hw.h',
'lib/bsp/standalone/src/common/xil_types.h',
'lib/bsp/standalone/src/common/xil_assert.h',
'lib/bsp/standalone/src/common/xil_io.h',
'lib/bsp/standalone/src/common/xil_printf.h',
'lib/bsp/standalone/src/common/xstatus.h',
'lib/bsp/standalone/src/common/xdebug.h',
'lib/bsp/standalone/src/arm/ARMv8/64bit/xpseudo_asm.h',
'lib/bsp/standalone/src/arm/ARMv8/64bit/xreg_cortexa53.h',
'lib/bsp/standalone/src/arm/ARMv8/64bit/xil_cache.h',
'lib/bsp/standalone/src/arm/ARMv8/64bit/xil_errata.h',
'lib/bsp/standalone/src/arm/ARMv8/64bit/platform/ZynqMP/xparameters_ps.h',
'lib/bsp/standalone/src/arm/common/xil_exception.h',
'lib/bsp/standalone/src/arm/common/gcc/xpseudo_asm_gcc.h',
]:
shutil.copy(os.path.join(lib, header), self.builder.include_dir)
write_to_file(os.path.join(self.builder.include_dir, 'bspconfig.h'), """
#ifndef BSPCONFIG_H
#define BSPCONFIG_H
#define EL3 1
#define EL1_NONSECURE 0
#endif
""")
write_to_file(os.path.join(self.builder.include_dir, 'xparameters.h'), '''
#ifndef XPARAMETERS_H
#define XPARAMETERS_H
#include "xparameters_ps.h"
#define STDIN_BASEADDRESS 0xFF000000
#define STDOUT_BASEADDRESS 0xFF000000
#define XPAR_PSU_DDR_0_S_AXI_BASEADDR 0x00000000
#define XPAR_PSU_DDR_0_S_AXI_HIGHADDR 0x7FFFFFFF
#define XPAR_PSU_DDR_1_S_AXI_BASEADDR 0x800000000
#define XPAR_PSU_DDR_1_S_AXI_HIGHADDR 0x87FFFFFFF
#define XPAR_CPU_CORTEXA53_0_TIMESTAMP_CLK_FREQ 99999001
#endif
''')
# Build --------------------------------------------------------------------------------------------
def main():
parser = argparse.ArgumentParser(description="LiteX SoC on ZCU216")
parser.add_argument("--build", action="store_true", help="Build bitstream.")
parser.add_argument("--load", action="store_true", help="Load bitstream.")
parser.add_argument("--sys-clk-freq", default=100e6, help="System clock frequency.")
builder_args(parser)
soc_core_args(parser)
vivado_build_args(parser)
parser.set_defaults(cpu_type="zynqmp")
parser.set_defaults(no_uart=True)
args = parser.parse_args()
soc = BaseSoC(
sys_clk_freq=int(float(args.sys_clk_freq)),
**soc_core_argdict(args)
)
builder = Builder(soc, **builder_argdict(args))
if args.cpu_type == "zynqmp":
soc.builder = builder
builder.add_software_package('libxil')
builder.add_software_library('libxil')
builder.build(**vivado_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()