+++ /dev/null
-# This file is Copyright (c) 2015-2019 Florent Kermarrec <florent@enjoy-digital.fr>
-# License: BSD
-
-from litex.build.generic_platform import *
-from litex.build.lattice import LatticePlatform
-from litex.build.lattice.programmer import LatticeProgrammer
-
-# IOs ----------------------------------------------------------------------------------------------
-
-_io = [
- ("clk100", 0, Pins("L5"), IOStandard("LVDS25")),
- ("rst_n", 0, Pins("A21"), IOStandard("LVCMOS33")),
-
- ("user_led", 0, Pins("Y20"), IOStandard("LVCMOS33")),
- ("user_led", 1, Pins("AA21"), IOStandard("LVCMOS33")),
- ("user_led", 2, Pins("U18"), IOStandard("LVCMOS33")),
- ("user_led", 3, Pins("U19"), IOStandard("LVCMOS33")),
- ("user_led", 4, Pins("W19"), IOStandard("LVCMOS33")),
- ("user_led", 5, Pins("V19"), IOStandard("LVCMOS33")),
- ("user_led", 6, Pins("AB20"), IOStandard("LVCMOS33")),
- ("user_led", 7, Pins("AA20"), IOStandard("LVCMOS33")),
-
- ("user_dip_btn", 0, Pins("J7"), IOStandard("LVCMOS15")),
- ("user_dip_btn", 1, Pins("J6"), IOStandard("LVCMOS15")),
- ("user_dip_btn", 2, Pins("H2"), IOStandard("LVCMOS15")),
- ("user_dip_btn", 3, Pins("H3"), IOStandard("LVCMOS15")),
- ("user_dip_btn", 4, Pins("J3"), IOStandard("LVCMOS15")),
- ("user_dip_btn", 5, Pins("K3"), IOStandard("LVCMOS15")),
- ("user_dip_btn", 6, Pins("J2"), IOStandard("LVCMOS15")),
- ("user_dip_btn", 7, Pins("J1"), IOStandard("LVCMOS15")),
-
- ("serial", 0,
- Subsignal("tx", Pins("B11"), IOStandard("LVCMOS33")), # X4 IO0
- Subsignal("rx", Pins("B12"), IOStandard("LVCMOS33")), # X4 IO1
- ),
-
- ("eth_clocks", 0,
- Subsignal("tx", Pins("C12")),
- Subsignal("gtx", Pins("M2")),
- Subsignal("rx", Pins("L4")),
- IOStandard("LVCMOS33")
- ),
- ("eth", 0,
- Subsignal("rst_n", Pins("L3")),
- Subsignal("mdio", Pins("L2")),
- Subsignal("mdc", Pins("V4")),
- Subsignal("dv", Pins("M1")),
- Subsignal("rx_er", Pins("M4")),
- Subsignal("rx_data", Pins("M5 N1 N6 P6 T2 R2 P5 P3")),
- Subsignal("tx_en", Pins("V3")),
- Subsignal("tx_data", Pins("V1 U1 R3 P1 N5 N3 N4 N2")),
- Subsignal("col", Pins("R1")),
- Subsignal("crs", Pins("P4")),
- IOStandard("LVCMOS33")
- ),
-
- ("eth_clocks", 1,
- Subsignal("tx", Pins("M21")),
- Subsignal("gtx", Pins("M19")),
- Subsignal("rx", Pins("N19")),
- IOStandard("LVCMOS33")
- ),
- ("eth", 1,
- Subsignal("rst_n", Pins("R21")),
- Subsignal("mdio", Pins("U16")),
- Subsignal("mdc", Pins("Y18")),
- Subsignal("dv", Pins("U15")),
- Subsignal("rx_er", Pins("V20")),
- Subsignal("rx_data", Pins("AB17 AA17 R19 V21 T17 R18 W21 Y21")),
- Subsignal("tx_en", Pins("V22")),
- Subsignal("tx_data", Pins("W22 R16 P17 Y22 T21 U22 P20 U20")),
- Subsignal("col", Pins("N18")),
- Subsignal("crs", Pins("P19")),
- IOStandard("LVCMOS33")
- ),
-]
-
-# Platform -----------------------------------------------------------------------------------------
-
-class Platform(LatticePlatform):
- default_clk_name = "clk100"
- default_clk_period = 1e9/100e6
-
- def __init__(self):
- LatticePlatform.__init__(self, "LFE3-35EA-6FN484C", _io)
-
- def do_finalize(self, fragment):
- LatticePlatform.do_finalize(self, fragment)
- try:
- self.add_period_constraint(self.lookup_request("eth_clocks", 0).rx, 1e9/125e6)
- except ConstraintError:
- pass
- try:
- self.add_period_constraint(self.lookup_request("eth_clocks", 1).rx, 1e9/125e6)
- except ConstraintError:
- pass
-
- def create_programmer(self):
- _xcf_template = """
-<?xml version='1.0' encoding='utf-8' ?>
-<!DOCTYPE ispXCF SYSTEM "IspXCF.dtd" >
-<ispXCF version="3.4.1">
- <Comment></Comment>
- <Chain>
- <Comm>JTAG</Comm>
- <Device>
- <SelectedProg value="TRUE"/>
- <Pos>1</Pos>
- <Vendor>Lattice</Vendor>
- <Family>LatticeECP3</Family>
- <Name>LFE3-35EA</Name>
- <File>{bitstream_file}</File>
- <Operation>Fast Program</Operation>
- </Device>
- </Chain>
- <ProjectOptions>
- <Program>SEQUENTIAL</Program>
- <Process>ENTIRED CHAIN</Process>
- <OperationOverride>No Override</OperationOverride>
- <StartTAP>TLR</StartTAP>
- <EndTAP>TLR</EndTAP>
- <VerifyUsercode value="FALSE"/>
- </ProjectOptions>
- <CableOptions>
- <CableName>USB2</CableName>
- <PortAdd>FTUSB-0</PortAdd>
- <USBID>Dual RS232-HS A Location 0000 Serial A</USBID>
- <JTAGPinSetting>
- TRST ABSENT;
- ISPEN ABSENT;
- </JTAGPinSetting>
- </CableOptions>
-</ispXCF>
-"""
-
- return LatticeProgrammer(_xcf_template)