litex/boards/platforms/nexys_video.py

   1 # This file is Copyright (c) 2015 Florent Kermarrec <florent@enjoy-digital.fr>
   2 # License: BSD
   3
   4 from litex.build.generic_platform import *
   5 from litex.build.xilinx import XilinxPlatform, XC3SProg, VivadoProgrammer
   6
   7 _io = [
   8     ("user_led", 0, Pins("T14"), IOStandard("LVCMOS25")),
   9     ("user_led", 1, Pins("T15"), IOStandard("LVCMOS25")),
  10     ("user_led", 2, Pins("T16"), IOStandard("LVCMOS25")),
  11     ("user_led", 3, Pins("U16"), IOStandard("LVCMOS25")),
  12     ("user_led", 4, Pins("V15"), IOStandard("LVCMOS25")),
  13     ("user_led", 5, Pins("W16"), IOStandard("LVCMOS25")),
  14     ("user_led", 6, Pins("W15"), IOStandard("LVCMOS25")),
  15     ("user_led", 7, Pins("Y13"), IOStandard("LVCMOS25")),
  16
  17     ("user_sw", 0, Pins("E22"), IOStandard("LVCMOS12")),
  18     ("user_sw", 1, Pins("F21"), IOStandard("LVCMOS12")),
  19     ("user_sw", 2, Pins("G21"), IOStandard("LVCMOS12")),
  20     ("user_sw", 3, Pins("G22"), IOStandard("LVCMOS12")),
  21     ("user_sw", 4, Pins("H17"), IOStandard("LVCMOS12")),
  22     ("user_sw", 5, Pins("J16"), IOStandard("LVCMOS12")),
  23     ("user_sw", 6, Pins("K13"), IOStandard("LVCMOS12")),
  24     ("user_sw", 7, Pins("M17"), IOStandard("LVCMOS12")),
  25
  26
  27     ("user_btn", 0, Pins("B22"), IOStandard("LVCMOS12")),
  28     ("user_btn", 1, Pins("D22"), IOStandard("LVCMOS12")),
  29     ("user_btn", 2, Pins("C22"), IOStandard("LVCMOS12")),
  30     ("user_btn", 3, Pins("D14"), IOStandard("LVCMOS12")),
  31     ("user_btn", 4, Pins("F15"), IOStandard("LVCMOS12")),
  32     ("user_btn", 5, Pins("G4"),  IOStandard("LVCMOS12")),
  33
  34     ("oled", 0,
  35         Subsignal("dc",   Pins("W22")),
  36         Subsignal("res",  Pins("U21")),
  37         Subsignal("sclk", Pins("W21")),
  38         Subsignal("sdin", Pins("Y22")),
  39         Subsignal("vbat", Pins("P20")),
  40         Subsignal("vdd",  Pins("V22")),
  41         IOStandard("LVCMOS33")
  42     ),
  43
  44     ("clk100", 0, Pins("R4"), IOStandard("LVCMOS33")),
  45
  46     ("cpu_reset", 0, Pins("G4"), IOStandard("LVCMOS15")),
  47
  48     ("serial", 0,
  49         Subsignal("tx", Pins("AA19")),
  50         Subsignal("rx", Pins("V18")),
  51         IOStandard("LVCMOS33"),
  52     ),
  53
  54     ("ddram", 0,
  55         Subsignal("a", Pins(
  56             "M2 M5 M3 M1 L6 P1 N3 N2",
  57             "M6 R1 L5 N5 N4 P2 P6"),
  58             IOStandard("SSTL15")),
  59         Subsignal("ba", Pins("L3 K6 L4"), IOStandard("SSTL15")),
  60         Subsignal("ras_n", Pins("J4"), IOStandard("SSTL15")),
  61         Subsignal("cas_n", Pins("K3"), IOStandard("SSTL15")),
  62         Subsignal("we_n", Pins("L1"), IOStandard("SSTL15")),
  63         Subsignal("dm", Pins("G3 F1"), IOStandard("SSTL15")),
  64         Subsignal("dq", Pins(
  65             "G2 H4 H5 J1 K1 H3 H2 J5",
  66             "E3 B2 F3 D2 C2 A1 E2 B1"),
  67             IOStandard("SSTL15"),
  68             Misc("IN_TERM=UNTUNED_SPLIT_50")),
  69         Subsignal("dqs_p", Pins("K2 E1"), IOStandard("DIFF_SSTL15")),
  70         Subsignal("dqs_n", Pins("J2 D1"), IOStandard("DIFF_SSTL15")),
  71         Subsignal("clk_p", Pins("P5"), IOStandard("DIFF_SSTL15")),
  72         Subsignal("clk_n", Pins("P4"), IOStandard("DIFF_SSTL15")),
  73         Subsignal("cke", Pins("J6"), IOStandard("SSTL15")),
  74         Subsignal("odt", Pins("K4"), IOStandard("SSTL15")),
  75         Subsignal("reset_n", Pins("G1"), IOStandard("SSTL15")),
  76         Misc("SLEW=FAST"),
  77     ),
  78
  79     ("eth_clocks", 0,
  80         Subsignal("tx", Pins("AA14")),
  81         Subsignal("rx", Pins("V13")),
  82         IOStandard("LVCMOS25")
  83     ),
  84     ("eth", 0,
  85         Subsignal("rst_n", Pins("U7"), IOStandard("LVCMOS33")),
  86         Subsignal("int_n", Pins("Y14")),
  87         Subsignal("mdio", Pins("Y16")),
  88         Subsignal("mdc", Pins("AA16")),
  89         Subsignal("rx_ctl", Pins("W10")),
  90         Subsignal("rx_data", Pins("AB16 AA15 AB15 AB11")),
  91         Subsignal("tx_ctl", Pins("V10")),
  92         Subsignal("tx_data", Pins("Y12 W12 W11 Y11")),
  93         IOStandard("LVCMOS25")
  94     ),
  95
  96     ("hdmi_in", 0,
  97         Subsignal("clk_p", Pins("V4"), IOStandard("TMDS_33")),
  98         Subsignal("clk_n", Pins("W4"), IOStandard("TMDS_33")),
  99         Subsignal("data0_p", Pins("Y3"), IOStandard("TMDS_33")),
 100         Subsignal("data0_n", Pins("AA3"), IOStandard("TMDS_33")),
 101         Subsignal("data1_p", Pins("W2"), IOStandard("TMDS_33")),
 102         Subsignal("data1_n", Pins("Y2"), IOStandard("TMDS_33")),
 103         Subsignal("data2_p", Pins("U2"), IOStandard("TMDS_33")),
 104         Subsignal("data2_n", Pins("V2"), IOStandard("TMDS_33")),
 105         Subsignal("scl", Pins("Y4"), IOStandard("LVCMOS33")),
 106         Subsignal("sda", Pins("AB5"), IOStandard("LVCMOS33")),
 107         Subsignal("cec", Pins("AA5"), IOStandard("LVCMOS33")),  # FIXME
 108         Subsignal("txen", Pins("R3"), IOStandard("LVCMOS33")),  # FIXME
 109         Subsignal("hpa", Pins("AB12"), IOStandard("LVCMOS25")), # FIXME
 110     ),
 111
 112     ("hdmi_out", 0,
 113         Subsignal("clk_p", Pins("T1"), IOStandard("TMDS_33")),
 114         Subsignal("clk_n", Pins("U1"), IOStandard("TMDS_33")),
 115         Subsignal("data0_p", Pins("W1"), IOStandard("TMDS_33")),
 116         Subsignal("data0_n", Pins("Y1"), IOStandard("TMDS_33")),
 117         Subsignal("data1_p", Pins("AA1"), IOStandard("TMDS_33")),
 118         Subsignal("data1_n", Pins("AB1"), IOStandard("TMDS_33")),
 119         Subsignal("data2_p", Pins("AB3"), IOStandard("TMDS_33")),
 120         Subsignal("data2_n", Pins("AB2"), IOStandard("TMDS_33")),
 121         Subsignal("scl", Pins("U3"), IOStandard("LVCMOS33")),
 122         Subsignal("sda", Pins("V3"), IOStandard("LVCMOS33")),
 123         Subsignal("cec", Pins("AA4"), IOStandard("LVCMOS33")),  # FIXME
 124         Subsignal("hdp", Pins("AB13"), IOStandard("LVCMOS25")), # FIXME
 125     ),
 126 ]
 127
 128 _connectors = [
 129     ("LPC", {
 130         "GBTCLK0_M2C_P": "F10",
 131         "GBTCLK0_M2C_N": "E10",
 132         "LA01_CC_P": "J20",
 133         "LA01_CC_N": "J21",
 134         "LA05_P": "M21",
 135         "LA05_N": "L21",
 136         "LA09_P": "H20",
 137         "LA09_N": "G20",
 138         "LA13_P": "K17",
 139         "LA13_N": "J17",
 140         "LA17_CC_P": "B17",
 141         "LA17_CC_N": "B18",
 142         "LA23_P": "B21",
 143         "LA23_N": "A21",
 144         "LA26_P": "F18",
 145         "LA26_N": "E18",
 146         "CLK0_M2C_P": "J19",
 147         "CLK0_M2C_N": "A19",
 148         "LA02_P": "M18",
 149         "LA02_N": "L18",
 150         "LA04_P": "N20",
 151         "LA04_N": "M20",
 152         "LA07_P": "M13",
 153         "LA07_N": "L13",
 154         "LA11_P": "L14",
 155         "LA11_N": "L15",
 156         "LA15_P": "L16",
 157         "LA15_N": "K16",
 158         "LA19_P": "A18",
 159         "LA19_N": "A19",
 160         "LA21_P": "E19",
 161         "LA21_N": "D19",
 162         "LA24_P": "B15",
 163         "LA24_N": "B16",
 164         "LA28_P": "C13",
 165         "LA28_N": "B13",
 166         "LA30_P": "A13",
 167         "LA30_N": "A14",
 168         "LA32_P": "A15",
 169         "LA32_N": "A16",
 170         "LA06_P": "N22",
 171         "LA06_N": "M22",
 172         "LA10_P": "K21",
 173         "LA10_N": "K22",
 174         "LA14_P": "J22",
 175         "LA14_N": "H22",
 176         "LA18_CC_P": "D17",
 177         "LA18_CC_N": "C17",
 178         "LA27_P": "B20",
 179         "LA27_N": "A20",
 180         "CLK1_M2C_P": "C18",
 181         "CLK1_M2C_N": "C19",
 182         "LA00_CC_P": "K18",
 183         "LA00_CC_N": "K19",
 184         "LA03_P": "N18",
 185         "LA03_N": "N19",
 186         "LA08_P": "M15",
 187         "LA08_N": "M16",
 188         "LA12_P": "L19",
 189         "LA12_N": "L20",
 190         "LA16_P": "G17",
 191         "LA16_N": "G18",
 192         "LA20_P": "F19",
 193         "LA20_N": "F20",
 194         "LA22_P": "E21",
 195         "LA22_N": "D21",
 196         "LA25_P": "F16",
 197         "LA25_N": "E17",
 198         "LA29_P": "C14",
 199         "LA29_N": "C15",
 200         "LA31_P": "E13",
 201         "LA31_N": "E14",
 202         "LA33_P": "F13",
 203         "LA33_N": "F14",
 204         }
 205     )
 206 ]
 207
 208 class Platform(XilinxPlatform):
 209     default_clk_name = "clk100"
 210     default_clk_period = 10.0
 211
 212     def __init__(self, toolchain="vivado", programmer="vivado"):
 213         XilinxPlatform.__init__(self, "xc7a200t-sbg484-1", _io, _connectors,
 214                                 toolchain=toolchain)
 215         self.toolchain.bitstream_commands = \
 216             ["set_property BITSTREAM.CONFIG.SPI_BUSWIDTH 4 [current_design]"]
 217         self.toolchain.additional_commands = \
 218             ["write_cfgmem -force -format bin -interface spix4 -size 16 "
 219              "-loadbit \"up 0x0 {build_name}.bit\" -file {build_name}.bin"]
 220         self.programmer = programmer
 221         self.add_platform_command("set_property INTERNAL_VREF 0.750 [get_iobanks 35]")
 222
 223
 224     def create_programmer(self):
 225         if self.programmer == "xc3sprog":
 226             return XC3SProg("nexys4")
 227         elif self.programmer == "vivado":
 228             return VivadoProgrammer(flash_part="n25q128-3.3v-spi-x1_x2_x4")
 229         else:
 230             raise ValueError("{} programmer is not supported"
 231                              .format(self.programmer))
 232
 233     def do_finalize(self, fragment):
 234         XilinxPlatform.do_finalize(self, fragment)
 235         try:
 236             self.add_period_constraint(self.lookup_request("eth_clocks").rx, 8.0)
 237         except ConstraintError:
 238             pass