litex/boards/platforms/versaecp55g.py

   1 # This file is Copyright (c) 2017 Serge 'q3k' Bazanski <serge@bazanski.pl>
   2 # License: BSD
   3
   4 from litex.build.generic_platform import *
   5 from litex.build.lattice import LatticePlatform
   6 from litex.build.lattice.programmer import LatticeProgrammer
   7
   8
   9 _io = [
  10     ("clk100", 0, Pins("P3"), IOStandard("LVDS")),
  11     ("rst_n", 0, Pins("T1"), IOStandard("LVCMOS33")),
  12
  13     ("user_led", 0, Pins("E16"), IOStandard("LVCMOS25")),
  14     ("user_led", 1, Pins("D17"), IOStandard("LVCMOS25")),
  15     ("user_led", 2, Pins("D18"), IOStandard("LVCMOS25")),
  16     ("user_led", 3, Pins("E18"), IOStandard("LVCMOS25")),
  17     ("user_led", 4, Pins("F17"), IOStandard("LVCMOS25")),
  18     ("user_led", 5, Pins("F18"), IOStandard("LVCMOS25")),
  19     ("user_led", 6, Pins("E17"), IOStandard("LVCMOS25")),
  20     ("user_led", 7, Pins("F16"), IOStandard("LVCMOS25")),
  21
  22     ("user_dip_btn", 0, Pins("H2"), IOStandard("LVCMOS15")),
  23     ("user_dip_btn", 1, Pins("K3"), IOStandard("LVCMOS15")),
  24     ("user_dip_btn", 2, Pins("G3"), IOStandard("LVCMOS15")),
  25     ("user_dip_btn", 3, Pins("F2"), IOStandard("LVCMOS15")),
  26     ("user_dip_btn", 4, Pins("J18"), IOStandard("LVCMOS25")),
  27     ("user_dip_btn", 5, Pins("K18"), IOStandard("LVCMOS25")),
  28     ("user_dip_btn", 6, Pins("K19"), IOStandard("LVCMOS25")),
  29     ("user_dip_btn", 7, Pins("K20"), IOStandard("LVCMOS25")),
  30
  31     ("serial", 0,
  32         Subsignal("tx", Pins("A12"), IOStandard("LVCMOS33")),  # X4 IO0
  33         Subsignal("rx", Pins("A13"), IOStandard("LVCMOS33")),  # X4 IO1
  34     ),
  35
  36     ("eth_clocks", 0,
  37         Subsignal("tx", Pins("P19")),
  38         Subsignal("rx", Pins("L20")),
  39         IOStandard("LVCMOS25")
  40     ),
  41     ("eth", 0,
  42         Subsignal("rst_n", Pins("U17")),
  43         Subsignal("mdio", Pins("U18")),
  44         Subsignal("mdc", Pins("T18")),
  45         Subsignal("rx_ctl", Pins("U19")),
  46         Subsignal("rx_data", Pins("T20 U20 T19 R18")),
  47         Subsignal("tx_ctl", Pins("R20")),
  48         Subsignal("tx_data", Pins("N19 N20 P18 P20")),
  49         IOStandard("LVCMOS25")
  50     ),
  51
  52     ("eth_clocks", 1,
  53         Subsignal("tx", Pins("C20")),
  54         Subsignal("rx", Pins("J19")),
  55         IOStandard("LVCMOS25")
  56     ),
  57     ("eth", 1,
  58         Subsignal("rst_n", Pins("F20")),
  59         Subsignal("mdio", Pins("H20")),
  60         Subsignal("mdc", Pins("G19")),
  61         Subsignal("rx_ctl", Pins("F19")),
  62         Subsignal("rx_data", Pins("G18 G16 H18 H17")),
  63         Subsignal("tx_ctl", Pins("E19")),
  64         Subsignal("tx_data", Pins("J17 J16 D19 D20")),
  65         IOStandard("LVCMOS25")
  66     ),
  67 ]
  68
  69
  70 class Platform(LatticePlatform):
  71     default_clk_name = "clk100"
  72     default_clk_period = 10
  73
  74     def __init__(self, **kwargs):
  75         LatticePlatform.__init__(self, "LFE5UM5G-45F-8BG381C", _io, **kwargs)
  76
  77     def do_finalize(self, fragment):
  78         LatticePlatform.do_finalize(self, fragment)
  79         try:
  80             self.add_period_constraint(self.lookup_request("eth_clocks", 0).rx, 8.0)
  81         except ConstraintError:
  82             pass
  83         try:
  84             self.add_period_constraint(self.lookup_request("eth_clocks", 1).rx, 8.0)
  85         except ConstraintError:
  86             pass
  87
  88     def create_programmer(self):
  89         _xcf_template = """
  90 <?xml version='1.0' encoding='utf-8' ?>
  91 <!DOCTYPE        ispXCF    SYSTEM    "IspXCF.dtd" >
  92 <ispXCF version="3.4.1">
  93     <Comment></Comment>
  94     <Chain>
  95         <Comm>JTAG</Comm>
  96         <Device>
  97             <SelectedProg value="TRUE"/>
  98             <Pos>1</Pos>
  99             <Vendor>Lattice</Vendor>
 100             <Family>ECP5UM5G</Family>
 101             <Name>LFE5UM5G-45F</Name>
 102             <IDCode>0x81112043</IDCode>
 103             <File>{bitstream_file}</File>
 104             <Operation>Fast Program</Operation>
 105         </Device>
 106         <Device>
 107             <SelectedProg value="FALSE"/>
 108             <Pos>2</Pos>
 109             <Vendor>Lattice</Vendor>
 110             <Family>ispCLOCK</Family>
 111             <Name>ispPAC-CLK5406D</Name>
 112             <IDCode>0x00191043</IDCode>
 113             <Operation>Erase,Program,Verify</Operation>
 114             <Bypass>
 115                 <InstrLen>8</InstrLen>
 116                 <InstrVal>11111111</InstrVal>
 117                 <BScanLen>1</BScanLen>
 118                 <BScanVal>0</BScanVal>
 119             </Bypass>
 120         </Device>
 121     </Chain>
 122     <ProjectOptions>
 123         <Program>SEQUENTIAL</Program>
 124         <Process>ENTIRED CHAIN</Process>
 125         <OperationOverride>No Override</OperationOverride>
 126         <StartTAP>TLR</StartTAP>
 127         <EndTAP>TLR</EndTAP>
 128         <VerifyUsercode value="FALSE"/>
 129     </ProjectOptions>
 130     <CableOptions>
 131         <CableName>USB2</CableName>
 132         <PortAdd>FTUSB-0</PortAdd>
 133         <USBID>LATTICE ECP5_5G VERSA BOARD A Location 0000 Serial Lattice ECP5_5G VERSA Board A</USBID>
 134     </CableOptions>
 135 </ispXCF>
 136 """
 137
 138         return LatticeProgrammer(_xcf_template)