Hardware
/
litex-boards
mirror of https://github.com/litex-hub/litex-boards.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

butterstick: Add Ethernet/Etherbone support (UART crossover working over Etherbone).

This commit is contained in:
Florent Kermarrec 2021-09-01 18:03:13 +02:00
parent 1f149ece6b
commit 1f25a98476
2 changed files with 63 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
litex_boards/platforms/gsd_butterstick.py
View File

@ -28,6 +28,27 @@ _io_r1_0 = [
# Buttons # Buttons
("user_btn", 0, Pins("U16"), IOStandard("SSTL135_I")), ("user_btn", 0, Pins("U16"), IOStandard("SSTL135_I")),
("user_btn", 1, Pins("T17"), IOStandard("SSTL135_I")), ("user_btn", 1, Pins("T17"), IOStandard("SSTL135_I")),
# RGMII Ethernet
("eth_clocks", 0,
Subsignal("tx", Pins("E15")),
Subsignal("rx", Pins("D11")),
IOStandard("LVCMOS33"),
Misc("SLEWRATE=FAST"),
),
("eth", 0,
Subsignal("rst_n", Pins("B20")),
Subsignal("mdio", Pins("D16")),
Subsignal("mdc", Pins("A19")),
Subsignal("rx_data", Pins("A16 C17 B17 A17")),
Subsignal("tx_ctl", Pins("D15")),
Subsignal("rx_ctl", Pins("B18")),
Subsignal("tx_data", Pins("C15 B16 A18 B19")),
IOStandard("LVCMOS33"),
Misc("SLEWRATE=FAST")
),
] ]
# Connectors --------------------------------------------------------------------------------------- # Connectors ---------------------------------------------------------------------------------------

53
litex_boards/targets/gsd_butterstick.py
View File

@ -7,6 +7,11 @@
# Copyright (c) 2021 Greg Davill <greg.davill@gmail.com> # Copyright (c) 2021 Greg Davill <greg.davill@gmail.com>
# SPDX-License-Identifier: BSD-2-Clause # SPDX-License-Identifier: BSD-2-Clause
# Build/Use:
# ./gsd_butterstick.py --uart-name=crossover --with-etherbone --csr-csv=csr.csv --build --load
# litex_server --udp
# litex_term bridge
import os import os
import sys import sys
import argparse import argparse
@ -21,6 +26,8 @@ from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import * from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser from litex.soc.cores.led import LedChaser
from liteeth.phy.ecp5rgmii import LiteEthPHYRGMII
# CRG --------------------------------------------------------------------------------------------- # CRG ---------------------------------------------------------------------------------------------
class _CRG(Module): class _CRG(Module):
@ -51,7 +58,10 @@ class _CRG(Module):
# BaseSoC ------------------------------------------------------------------------------------------ # BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore): class BaseSoC(SoCCore):
def __init__(self, revision="1.0", device="25F", sys_clk_freq=int(60e6), toolchain="trellis", with_led_chaser=True, **kwargs): def __init__(self, revision="1.0", device="25F", sys_clk_freq=int(60e6), toolchain="trellis",
with_ethernet=False, with_etherbone=False, eth_ip="192.168.1.50", eth_dynamic_ip=False,
with_led_chaser=True,
**kwargs) :
platform = butterstick.Platform(revision=revision, device=device ,toolchain=toolchain) platform = butterstick.Platform(revision=revision, device=device ,toolchain=toolchain)
# SoCCore ---------------------------------------------------------------------------------- # SoCCore ----------------------------------------------------------------------------------
@ -63,6 +73,16 @@ class BaseSoC(SoCCore):
# CRG -------------------------------------------------------------------------------------- # CRG --------------------------------------------------------------------------------------
self.submodules.crg = _CRG(platform, sys_clk_freq) self.submodules.crg = _CRG(platform, sys_clk_freq)
# Ethernet / Etherbone ---------------------------------------------------------------------
if with_ethernet or with_etherbone:
self.submodules.ethphy = LiteEthPHYRGMII(
clock_pads = self.platform.request("eth_clocks"),
pads = self.platform.request("eth"))
if with_ethernet:
self.add_ethernet(phy=self.ethphy, dynamic_ip=eth_dynamic_ip)
if with_etherbone:
self.add_etherbone(phy=self.ethphy, ip_address=eth_ip)
# Leds ------------------------------------------------------------------------------------- # Leds -------------------------------------------------------------------------------------
if with_led_chaser: if with_led_chaser:
self.comb += platform.request("user_led_color").eq(0b010) # Blue. self.comb += platform.request("user_led_color").eq(0b010) # Blue.
@ -75,22 +95,33 @@ class BaseSoC(SoCCore):
def main(): def main():
parser = argparse.ArgumentParser(description="LiteX SoC on ButterStick") parser = argparse.ArgumentParser(description="LiteX SoC on ButterStick")
parser.add_argument("--build", action="store_true", help="Build bitstream") parser.add_argument("--build", action="store_true", help="Build bitstream")
parser.add_argument("--load", action="store_true", help="Load bitstream") parser.add_argument("--load", action="store_true", help="Load bitstream")
parser.add_argument("--toolchain", default="trellis", help="FPGA use, trellis (default) or diamond") parser.add_argument("--toolchain", default="trellis", help="FPGA use, trellis (default) or diamond")
parser.add_argument("--sys-clk-freq", default=60e6, help="System clock frequency (default: 60MHz)") parser.add_argument("--sys-clk-freq", default=125e6, help="System clock frequency (default: 125MHz)")
parser.add_argument("--revision", default="1.0", help="Board Revision: 1.0 (default)") parser.add_argument("--revision", default="1.0", help="Board Revision: 1.0 (default)")
parser.add_argument("--device", default="85F", help="ECP5 device (default: 85F)") parser.add_argument("--device", default="85F", help="ECP5 device (default: 85F)")
ethopts = parser.add_mutually_exclusive_group()
ethopts.add_argument("--with-ethernet", action="store_true", help="Add Ethernet")
ethopts.add_argument("--with-etherbone", action="store_true", help="Add EtherBone")
parser.add_argument("--eth-ip", default="192.168.1.50", help="Ethernet/Etherbone IP address")
parser.add_argument("--eth-dynamic-ip", action="store_true", help="Enable dynamic Ethernet IP addresses setting")
builder_args(parser) builder_args(parser)
soc_core_args(parser) soc_core_args(parser)
trellis_args(parser) trellis_args(parser)
args = parser.parse_args() args = parser.parse_args()
assert not (args.with_etherbone and args.eth_dynamic_ip)
soc = BaseSoC( soc = BaseSoC(
toolchain = args.toolchain, toolchain = args.toolchain,
revision = args.revision, revision = args.revision,
device = args.device, device = args.device,
sys_clk_freq = int(float(args.sys_clk_freq)), sys_clk_freq = int(float(args.sys_clk_freq)),
with_ethernet = args.with_ethernet,
with_etherbone = args.with_etherbone,
eth_ip = args.eth_ip,
eth_dynamic_ip = args.eth_dynamic_ip,
**soc_core_argdict(args)) **soc_core_argdict(args))
builder = Builder(soc, **builder_argdict(args)) builder = Builder(soc, **builder_argdict(args))
builder_kargs = trellis_argdict(args) if args.toolchain == "trellis" else {} builder_kargs = trellis_argdict(args) if args.toolchain == "trellis" else {}