litex-boards/litex_boards/targets/sqrl_fk33.py

170 lines
7.2 KiB
Python
Executable File

#!/usr/bin/env python3
#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2020-2022 Florent Kermarrec <florent@enjoy-digital.fr>
# SPDX-License-Identifier: BSD-2-Clause
# Build/Use:
# python3 -m litex_boards.targets.sqrl_fk33 --with-hbm --sys-clk-freq=250e6 --csr-csv=csr.csv --build --load
# litex_server --jtag --jtag-config=openocd_xc7_ft2232.cfg --jtag-chain=2
# litex_term crossover
import os
from migen import *
from litex_boards.platforms import fk33
from litex.soc.cores.clock import *
from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import *
from litex.soc.integration.soc import SoCRegion
from litex.soc.interconnect.axi import *
from litex.soc.cores.ram.xilinx_usp_hbm2 import USPHBM2
from litex.soc.cores.led import LedChaser
from litepcie.phy.usppciephy import USPHBMPCIEPHY
from litepcie.core import LitePCIeEndpoint, LitePCIeMSI
from litepcie.frontend.dma import LitePCIeDMA
from litepcie.frontend.wishbone import LitePCIeWishboneBridge
from litepcie.software import generate_litepcie_software
# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
def __init__(self, platform, sys_clk_freq, with_hbm):
self.rst = Signal()
self.clock_domains.cd_sys = ClockDomain()
if with_hbm:
self.clock_domains.cd_hbm_ref = ClockDomain()
self.clock_domains.cd_apb = ClockDomain()
# # #
self.submodules.pll = pll = USPMMCM(speedgrade=-2)
self.comb += pll.reset.eq(self.rst)
pll.register_clkin(platform.request("clk200"), 200e6)
pll.create_clkout(self.cd_sys, sys_clk_freq)
platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
if with_hbm:
pll.create_clkout(self.cd_hbm_ref, 100e6)
pll.create_clkout(self.cd_apb, 100e6)
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(125e6), with_led_chaser=True, with_pcie=False, with_hbm=False, **kwargs):
platform = fk33.Platform()
if with_hbm:
assert 225e6 <= sys_clk_freq <= 450e6
# SoCCore ----------------------------------------------------------------------------------
if kwargs.get("uart_name", "serial") == "serial":
kwargs["uart_name"] = "crossover" # Defaults to Crossover-UART.
SoCCore.__init__(self, platform, sys_clk_freq,
ident = "LiteX SoC on FK33",
**kwargs)
# JTAGBone --------------------------------------------------------------------------------
self.add_jtagbone(chain=2) # Chain 1 already used by HBM2 debug probes.
# CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq, with_hbm)
# HBM --------------------------------------------------------------------------------------
if with_hbm:
# Add HBM Core.
self.submodules.hbm = hbm = ClockDomainsRenamer({"axi": "sys"})(USPHBM2(platform))
# Get HBM .xci.
os.system("wget https://github.com/litex-hub/litex-boards/files/8178874/hbm_0.xci.txt")
os.makedirs("ip/hbm", exist_ok=True)
os.system("mv hbm_0.xci.txt ip/hbm/hbm_0.xci")
# Connect four of the HBM's AXI interfaces to the main bus of the SoC.
for i in range(4):
axi_hbm = hbm.axi[i]
axi_lite_hbm = AXILiteInterface(data_width=256, address_width=33)
self.submodules += AXILite2AXI(axi_lite_hbm, axi_hbm)
self.bus.add_slave(f"hbm{i}", axi_lite_hbm, SoCRegion(origin=0x4000_0000 + 0x1000_0000*i, size=0x1000_0000)) # 256MB.
# Link HBM2 channel 0 as main RAM
self.bus.add_region("main_ram", SoCRegion(origin=0x4000_0000, size=0x1000_0000, linker=True)) # 256MB.
# PCIe -------------------------------------------------------------------------------------
if with_pcie:
assert self.csr_data_width == 32
# PHY
self.submodules.pcie_phy = USPHBMPCIEPHY(platform, platform.request("pcie_x4"),
data_width = 128,
bar0_size = 0x20000)
# Endpoint
self.submodules.pcie_endpoint = LitePCIeEndpoint(self.pcie_phy, max_pending_requests=8)
# Wishbone bridge
self.submodules.pcie_bridge = LitePCIeWishboneBridge(self.pcie_endpoint,
base_address = self.mem_map["csr"])
self.add_wb_master(self.pcie_bridge.wishbone)
# DMA0
self.submodules.pcie_dma0 = LitePCIeDMA(self.pcie_phy, self.pcie_endpoint,
with_buffering = True, buffering_depth=1024,
with_loopback = True)
self.add_constant("DMA_CHANNELS", 1)
# MSI
self.submodules.pcie_msi = LitePCIeMSI()
self.comb += self.pcie_msi.source.connect(self.pcie_phy.msi)
self.interrupts = {
"PCIE_DMA0_WRITER": self.pcie_dma0.writer.irq,
"PCIE_DMA0_READER": self.pcie_dma0.reader.irq,
}
for i, (k, v) in enumerate(sorted(self.interrupts.items())):
self.comb += self.pcie_msi.irqs[i].eq(v)
self.add_constant(k + "_INTERRUPT", i)
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.submodules.leds = LedChaser(
pads = platform.request_all("user_led"),
sys_clk_freq = sys_clk_freq)
# Build --------------------------------------------------------------------------------------------
def main():
from litex.soc.integration.soc import LiteXSoCArgumentParser
parser = LiteXSoCArgumentParser(description="LiteX SoC on FK33")
target_group = parser.add_argument_group(title="Target options")
target_group.add_argument("--build", action="store_true", help="Build bitstream.")
target_group.add_argument("--load", action="store_true", help="Load bitstream.")
target_group.add_argument("--sys-clk-freq", default=125e6, help="System clock frequency.")
target_group.add_argument("--with-pcie", action="store_true", help="Enable PCIe support.")
target_group.add_argument("--with-hbm", action="store_true", help="Use HBM2.")
target_group.add_argument("--driver", action="store_true", help="Generate PCIe driver.")
builder_args(parser)
soc_core_args(parser)
args = parser.parse_args()
soc = BaseSoC(
sys_clk_freq = int(float(args.sys_clk_freq)),
with_pcie = args.with_pcie,
with_hbm = args.with_hbm,
**soc_core_argdict(args)
)
builder = Builder(soc, **builder_argdict(args))
builder.build(run=args.build)
if args.driver:
generate_litepcie_software(soc, os.path.join(builder.output_dir, "driver"))
if args.load:
prog = soc.platform.create_programmer()
prog.load_bitstream(builder.get_bitstream_filename(mode="sram"))
if __name__ == "__main__":
main()