From 369cf4c4d7694d33141f9b706d50dcf94cbc5363 Mon Sep 17 00:00:00 2001 From: Florent Kermarrec Date: Tue, 23 Jun 2015 00:37:31 +0200 Subject: [PATCH] liteeth/example_designs: add false path between clock domains (speed up implementation) and use automatic PHY detection --- .../liteeth/example_designs/targets/base.py | 20 +++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/misoclib/com/liteeth/example_designs/targets/base.py b/misoclib/com/liteeth/example_designs/targets/base.py index 14c9cbfa..fe48ede3 100644 --- a/misoclib/com/liteeth/example_designs/targets/base.py +++ b/misoclib/com/liteeth/example_designs/targets/base.py @@ -1,6 +1,7 @@ from migen.bus import wishbone from migen.bank.description import * from migen.genlib.io import CRG +from mibuild.xilinx.vivado import XilinxVivadoToolchain from misoclib.soc import SoC from misoclib.tools.litescope.common import * @@ -10,14 +11,14 @@ from misoclib.tools.litescope.core.port import LiteScopeTerm from misoclib.com.uart.bridge import UARTWishboneBridge from misoclib.com.liteeth.common import * -from misoclib.com.liteeth.phy.gmii import LiteEthPHYGMII +from misoclib.com.liteeth.phy import LiteEthPHY from misoclib.com.liteeth.core import LiteEthUDPIPCore class BaseSoC(SoC, AutoCSR): csr_map = { - "phy": 11, - "core": 12 + "phy": 11, + "core": 12 } csr_map.update(SoC.csr_map) def __init__(self, platform, clk_freq=166*1000000, @@ -40,9 +41,20 @@ class BaseSoC(SoC, AutoCSR): self.add_wb_slave(lambda a: a[23:25] == 1, self.sram.bus) # ethernet PHY and UDP/IP stack - self.submodules.phy = LiteEthPHYGMII(platform.request("eth_clocks"), platform.request("eth")) + self.submodules.phy = LiteEthPHY(platform.request("eth_clocks"), platform.request("eth"), clk_freq=clk_freq) self.submodules.core = LiteEthUDPIPCore(self.phy, mac_address, convert_ip(ip_address), clk_freq) + if isinstance(platform.toolchain, XilinxVivadoToolchain): + platform.add_platform_command(""" +create_clock -name sys_clk -period 6.0 [get_nets sys_clk] +create_clock -name eth_rx_clk -period 8.0 [get_nets eth_rx_clk] +create_clock -name eth_tx_clk -period 8.0 [get_nets eth_tx_clk] +set_false_path -from [get_clocks sys_clk] -to [get_clocks eth_rx_clk] +set_false_path -from [get_clocks eth_rx_clk] -to [get_clocks sys_clk] +set_false_path -from [get_clocks sys_clk] -to [get_clocks eth_tx_clk] +set_false_path -from [get_clocks eth_tx_clk] -to [get_clocks sys_clk] +""") + class BaseSoCDevel(BaseSoC, AutoCSR): csr_map = { -- 2.30.2