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https://github.com/litex-hub/litex-boards.git
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8211aca2e8
We initially wanted to provide different level of support for the platforms/targets, mainly to avoid too much maintenance and let each contributor update its contributed platforms and targets, but it's easier to update all platforms/targets all-together when LiteX evolves or changes (and that's what has been done on litex-boards since the creation of the repository). So let just simplify things and avoid this differentiation.
122 lines
4.7 KiB
Python
122 lines
4.7 KiB
Python
# This file is Copyright (c) 2015 Matt O'Gorman <mog@rldn.net>
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# License: BSD
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from litex.build.generic_platform import *
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from litex.build.xilinx import XilinxPlatform
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from litex.build.xilinx.programmer import FpgaProg
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# IOs ----------------------------------------------------------------------------------------------
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_io = [
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("user_led", 0, Pins("P11"), IOStandard("LVCMOS33")),
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("user_led", 1, Pins("N9"), IOStandard("LVCMOS33")),
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("user_led", 2, Pins("M9"), IOStandard("LVCMOS33")),
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("user_led", 3, Pins("P9"), IOStandard("LVCMOS33")),
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("user_led", 4, Pins("T8"), IOStandard("LVCMOS33")),
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("user_led", 5, Pins("N8"), IOStandard("LVCMOS33")),
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("user_led", 6, Pins("P8"), IOStandard("LVCMOS33")),
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("user_led", 7, Pins("P7"), IOStandard("LVCMOS33")),
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("user_sw", 0, Pins("L1"), IOStandard("LVCMOS33"), Misc("PULLUP")),
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("user_sw", 1, Pins("L3"), IOStandard("LVCMOS33"), Misc("PULLUP")),
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("user_sw", 2, Pins("L4"), IOStandard("LVCMOS33"), Misc("PULLUP")),
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("user_sw", 3, Pins("L5"), IOStandard("LVCMOS33"), Misc("PULLUP")),
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("clk32", 0, Pins("J4"), IOStandard("LVCMOS33")),
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("clk50", 0, Pins("K3"), IOStandard("LVCMOS33")),
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("spiflash", 0,
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Subsignal("cs_n", Pins("T3"), IOStandard("LVCMOS33")),
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Subsignal("clk", Pins("R11"), IOStandard("LVCMOS33")),
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Subsignal("mosi", Pins("T10"), IOStandard("LVCMOS33")),
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Subsignal("miso", Pins("P10"), IOStandard("LVCMOS33"))
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),
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("adc", 0,
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Subsignal("cs_n", Pins("F6"), IOStandard("LVCMOS33")),
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Subsignal("clk", Pins("G6"), IOStandard("LVCMOS33")),
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Subsignal("mosi", Pins("H4"), IOStandard("LVCMOS33")),
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Subsignal("miso", Pins("H5"), IOStandard("LVCMOS33"))
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),
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("serial", 0,
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Subsignal("tx", Pins("N6"), IOStandard("LVCMOS33")), # FTDI D1
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Subsignal("rx", Pins("M7"), IOStandard("LVCMOS33")) # FTDI D0
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),
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("audio", 0,
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Subsignal("a0", Pins("B8"), IOStandard("LVCMOS33")),
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Subsignal("a1", Pins("A8"), IOStandard("LVCMOS33"))
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),
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("sdram_clock", 0, Pins("G16"), IOStandard("LVCMOS33"), Misc("SLEW=FAST")),
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("sdram", 0,
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Subsignal("a", Pins("T15 R16 P15 P16 N16 M15 M16 L16 K15 K16 R15 J16 H15")),
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Subsignal("dq", Pins("T13 T12 R12 T9 R9 T7 R7 T6 F16 E15 E16 D16 B16 B15 C16 C15")),
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Subsignal("we_n", Pins("R5")),
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Subsignal("ras_n", Pins("R2")),
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Subsignal("cas_n", Pins("T4")),
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Subsignal("cs_n", Pins("R1")),
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Subsignal("cke", Pins("H16")),
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Subsignal("ba", Pins("R14 T14")),
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Subsignal("dm", Pins("T5 F15")),
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IOStandard("LVCMOS33"), Misc("SLEW=FAST")
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),
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("usb_fifo", 0,
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Subsignal("data", Pins("M7 N6 M6 P5 N5 P4 P2 P1")),
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Subsignal("rxf_n", Pins("N3")),
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Subsignal("txe_n", Pins("N1")),
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Subsignal("rd_n", Pins("M1")),
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Subsignal("wr_n", Pins("M2")),
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Subsignal("siwua", Pins("M3")),
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IOStandard("LVCMOS33"), Drive(8), Misc("SLEW=FAST")
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),
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("sdcard", 0,
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Subsignal("data", Pins("M10 L10 J11 K12"), Misc("PULLUP")),
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Subsignal("cmd", Pins("K11"), Misc("PULLUP")),
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Subsignal("clk", Pins("L12")),
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IOStandard("LVCMOS33"), Misc("SLEW=FAST")
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),
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("dvi_in", 0,
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Subsignal("clk_p", Pins("C9"), IOStandard("TMDS_33")),
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Subsignal("clk_n", Pins("A9"), IOStandard("TMDS_33")),
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Subsignal("data_p", Pins("C7 B6 B5"), IOStandard("TMDS_33")),
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Subsignal("data_n", Pins("A7 A6 A5"), IOStandard("TMDS_33")),
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Subsignal("scl", Pins("C1"), IOStandard("LVCMOS33")),
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Subsignal("sda", Pins("B1"), IOStandard("LVCMOS33"))
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),
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("dvi_out", 0,
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Subsignal("clk_p", Pins("B14"), IOStandard("TMDS_33")),
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Subsignal("clk_n", Pins("A14"), IOStandard("TMDS_33")),
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Subsignal("data_p", Pins("C13 B12 C11"), IOStandard("TMDS_33")),
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Subsignal("data_n", Pins("A13 A12 A11"), IOStandard("TMDS_33")),
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)
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]
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# Connectors ---------------------------------------------------------------------------------------
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_connectors = [
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("A", "E7 C8 D8 E8 D9 A10 B10 C10 E10 F9 F10 D11"),
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("B", "E11 D14 D12 E12 E13 F13 F12 F14 G12 H14 J14"),
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("C", "J13 J12 K14 L14 L13 M14 M13 N14 M12 N12 P12 M11"),
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("D", "D6 C6 E6 C5"),
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("E", "D5 A4 G5 A3 B3 A2 B2 C3 C2 D3 D1 E3"),
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("F", "E2 E1 E4 F4 F5 G3 F3 G1 H3 H1 H2 J1")
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]
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# Platform -----------------------------------------------------------------------------------------
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class Platform(XilinxPlatform):
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default_clk_name = "clk32"
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default_clk_period = 1e9/32e6
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def __init__(self, device="xc6slx25"):
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assert device in ["xc6slx9", "xc6slx25"]
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XilinxPlatform.__init__(self, device+"-3-ftg256", _io, _connectors)
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def create_programmer(self):
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return FpgaProg()
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