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example_designs/targets/core: add possibility to build udp cores (with hw udp/ip stack)

This commit is contained in:
Florent Kermarrec 2016-02-10 10:28:41 +01:00
parent fef1be9c35
commit 36399d65da
1 changed files with 108 additions and 22 deletions
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120
example_designs/targets/core.py
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@ -11,30 +11,20 @@ from litex.soc.interconnect import wishbone
from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import *
from liteeth.common import *
from liteeth.phy.mii import LiteEthPHYMII
from liteeth.phy.rmii import LiteEthPHYRMII
from liteeth.phy.gmii import LiteEthPHYGMII
from liteeth.phy.s7rgmii import LiteEthPHYRGMII
from liteeth.core.mac import LiteEthMAC
from liteeth.core import LiteEthUDPIPCore
_io = [
("sys_clock", 0, Pins(1)),
("sys_reset", 1, Pins(1)),
("wishbone", 0,
Subsignal("adr", Pins(30)),
Subsignal("dat_r", Pins(32)),
Subsignal("dat_w", Pins(32)),
Subsignal("sel", Pins(4)),
Subsignal("cyc", Pins(1)),
Subsignal("stb", Pins(1)),
Subsignal("ack", Pins(1)),
Subsignal("we", Pins(1)),
Subsignal("cti", Pins(3)),
Subsignal("bte", Pins(2)),
Subsignal("err", Pins(1))
),
# MII PHY Pads
("mii_eth_clocks", 0,
Subsignal("tx", Pins(1)),
@ -103,6 +93,52 @@ _io = [
Subsignal("tx_ctl", Pins(1)),
Subsignal("tx_data", Pins(4))
),
# Wishbone
("wishbone", 0,
Subsignal("adr", Pins(30)),
Subsignal("dat_r", Pins(32)),
Subsignal("dat_w", Pins(32)),
Subsignal("sel", Pins(4)),
Subsignal("cyc", Pins(1)),
Subsignal("stb", Pins(1)),
Subsignal("ack", Pins(1)),
Subsignal("we", Pins(1)),
Subsignal("cti", Pins(3)),
Subsignal("bte", Pins(2)),
Subsignal("err", Pins(1))
),
# UDP
("udp_sink", 0,
Subsignal("stb", Pins(1)),
Subsignal("sop", Pins(1)),
Subsignal("eop", Pins(1)),
Subsignal("ack", Pins(1)),
# param
Subsignal("src_port", Pins(16)),
Subsignal("dst_port", Pins(16)),
Subsignal("ip_address", Pins(32)),
Subsignal("length", Pins(16)),
# payload
Subsignal("data", Pins(32)),
Subsignal("error", Pins(4))
),
("udp_source", 0,
Subsignal("stb", Pins(1)),
Subsignal("sop", Pins(1)),
Subsignal("eop", Pins(1)),
Subsignal("ack", Pins(1)),
# param
Subsignal("src_port", Pins(16)),
Subsignal("dst_port", Pins(16)),
Subsignal("ip_address", Pins(32)),
Subsignal("length", Pins(16)),
# payload
Subsignal("data", Pins(32)),
Subsignal("error", Pins(4))
),
]
class CorePlatform(XilinxPlatform):
@ -135,7 +171,7 @@ class Core(SoCCore):
}
mem_map.update(SoCCore.mem_map)
def __init__(self, phy, clk_freq=100*1000000):
def __init__(self, phy, core, clk_freq, mac_address, ip_address, udp_port):
platform = CorePlatform()
SoCCore.__init__(self, platform,
clk_freq=clk_freq,
@ -163,23 +199,73 @@ class Core(SoCCore):
else:
ValueError("Unsupported " + phy + " PHY");
# core
if core == "mac":
self.submodules.ethmac = LiteEthMAC(phy=self.ethphy, dw=32, interface="wishbone")
self.add_wb_slave(mem_decoder(self.mem_map["ethmac"]), self.ethmac.bus)
self.add_memory_region("ethmac", self.mem_map["ethmac"] | self.shadow_base, 0x2000)
# wishbone
self.add_cpu_or_bridge(WishboneBridge(platform.request("wishbone")))
self.add_wb_master(self.cpu_or_bridge.wishbone)
elif core == "udp":
self.submodules.core = LiteEthUDPIPCore(self.ethphy, mac_address, convert_ip(ip_address), clk_freq)
udp_port = self.core.udp.crossbar.get_port(udp_port, 8)
# XXX avoid manual connect
udp_sink = platform.request("udp_sink")
self.comb += [
# control
udp_port.sink.stb.eq(udp_sink.stb),
udp_port.sink.sop.eq(udp_sink.sop),
udp_port.sink.eop.eq(udp_sink.eop),
udp_sink.ack.eq(udp_port.sink.ack),
# param
udp_port.sink.src_port.eq(udp_sink.src_port),
udp_port.sink.dst_port.eq(udp_sink.dst_port),
udp_port.sink.ip_address.eq(udp_sink.ip_address),
udp_port.sink.length.eq(udp_sink.length),
# payload
udp_port.sink.data.eq(udp_sink.data),
udp_port.sink.error.eq(udp_sink.error)
]
udp_source = platform.request("udp_source")
self.comb += [
# control
udp_source.stb.eq(udp_port.source.stb),
udp_source.sop.eq(udp_port.source.sop),
udp_source.eop.eq(udp_port.source.eop),
udp_port.source.ack.eq(udp_source.ack),
# param
udp_source.src_port.eq(udp_port.source.src_port),
udp_source.dst_port.eq(udp_port.source.dst_port),
udp_source.ip_address.eq(udp_port.source.ip_address),
udp_source.length.eq(udp_port.source.length),
# payload
udp_source.data.eq(udp_port.source.data),
udp_source.error.eq(udp_port.source.error)
]
def main():
parser = argparse.ArgumentParser(description="LiteEth core builder")
builder_args(parser)
soc_core_args(parser)
parser.add_argument("--phy", default="MII", help="Ethernet PHY(MII/RMII/GMII/RMGII)")
parser.add_argument("--core", default="wishbone", help="Ethernet Core(wishbone/udp)")
parser.add_argument("--mac_address", default=0x10e2d5000000, help="MAC address")
parser.add_argument("--ip_address", default="192.168.0.42", help="IP address")
args = parser.parse_args()
soc = Core(phy=args.phy, **soc_core_argdict(args))
soc = Core(phy=args.phy,
core=args.core,
clk_freq=100*1000,
mac_address=args.mac_address,
ip_address=args.ip_address,
udp_port=6000,
**soc_core_argdict(args))
builder = Builder(soc, output_dir="liteeth", compile_gateware=False, csr_csv="liteeth/csr.csv")
builder.build(build_name="liteeth")