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linsn_rv901t.py: Update Ethernet and add Etherbone support.

This commit is contained in:
Florent Kermarrec 2021-09-13 19:35:05 +02:00
parent b9f2a4c483
commit db91eda899
1 changed files with 21 additions and 10 deletions
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31
litex_boards/targets/linsn_rv901t.py
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@ -24,7 +24,6 @@ from litedram.modules import M12L64322A
from litedram.phy import GENSDRPHY from litedram.phy import GENSDRPHY
from liteeth.phy.s6rgmii import LiteEthPHYRGMII from liteeth.phy.s6rgmii import LiteEthPHYRGMII
from liteeth.mac import LiteEthMAC
# CRG ---------------------------------------------------------------------------------------------- # CRG ----------------------------------------------------------------------------------------------
@ -50,7 +49,7 @@ class _CRG(Module):
# BaseSoC ------------------------------------------------------------------------------------------ # BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore): class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(75e6), with_ethernet=False, with_led_chaser=True, **kwargs): def __init__(self, sys_clk_freq=int(75e6), with_ethernet=False, with_etherbone=False, eth_phy=0, with_led_chaser=True, **kwargs):
platform = linsn_rv901t.Platform() platform = linsn_rv901t.Platform()
# SoCCore ---------------------------------------------------------------------------------- # SoCCore ----------------------------------------------------------------------------------
@ -71,12 +70,19 @@ class BaseSoC(SoCCore):
l2_cache_size = kwargs.get("l2_size", 8192) l2_cache_size = kwargs.get("l2_size", 8192)
) )
# Ethernet --------------------------------------------------------------------------------- # Ethernet / Etherbone ---------------------------------------------------------------------
if with_ethernet: if with_ethernet or with_etherbone:
self.submodules.ethphy = LiteEthPHYRGMII( self.submodules.ethphy = LiteEthPHYRGMII(
clock_pads = self.platform.request("eth_clocks", eth_phy), clock_pads = self.platform.request("eth_clocks", eth_phy),
pads = self.platform.request("eth", eth_phy)) pads = self.platform.request("eth", eth_phy),
self.add_ethernet(phy=self.ethphy) tx_delay = 0e-9)
if with_ethernet:
self.add_ethernet(phy=self.ethphy, with_timing_constraints=False)
if with_etherbone:
self.add_etherbone(phy=self.ethphy, with_timing_constraints=False)
# Timing Constraints.
platform.add_period_constraint(platform.lookup_request("eth_clocks", eth_phy).rx, 1e9/125e6)
platform.add_false_path_constraints(self.crg.cd_sys.clk, platform.lookup_request("eth_clocks", eth_phy).rx)
# Leds ------------------------------------------------------------------------------------- # Leds -------------------------------------------------------------------------------------
if with_led_chaser: if with_led_chaser:
@ -91,15 +97,20 @@ def main():
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("--sys-clk-freq", default=75e6, help="System clock frequency (default: 75MHz)") parser.add_argument("--sys-clk-freq", default=75e6, help="System clock frequency (default: 75MHz)")
parser.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support") ethopts = parser.add_mutually_exclusive_group()
parser.add_argument("--eth-phy", default=0, type=int, help="Ethernet PHY: 0 (default) or 1") ethopts.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support")
ethopts.add_argument("--with-etherbone", action="store_true", help="Enable Etherbone support")
parser.add_argument("--eth-phy", default=0, type=int, help="Ethernet PHY: 0 (default) or 1")
builder_args(parser) builder_args(parser)
soc_core_args(parser) soc_core_args(parser)
args = parser.parse_args() args = parser.parse_args()
soc = BaseSoC( soc = BaseSoC(
sys_clk_freq = int(float(args.sys_clk_freq)), sys_clk_freq = int(float(args.sys_clk_freq)),
**soc_core_argdict(args) with_ethernet = args.with_ethernet,
with_etherbone = args.with_etherbone,
eth_phy = int(args.eth_phy),
**soc_core_argdict(args)
) )
builder = Builder(soc, **builder_argdict(args)) builder = Builder(soc, **builder_argdict(args))
builder.build(run=args.build) builder.build(run=args.build)