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Diffstat (limited to 'amaranth_boards/logicbone.py')
| -rw-r--r-- | amaranth_boards/logicbone.py | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/amaranth_boards/logicbone.py b/amaranth_boards/logicbone.py new file mode 100644 index 0000000..acc131c --- /dev/null +++ b/amaranth_boards/logicbone.py @@ -0,0 +1,138 @@ +import os +import subprocess + +from amaranth.build import * +from amaranth.vendor.lattice_ecp5 import * +from .resources import * + + +__all__ = ["LogicbonePlatform", "Logicbone85FPlatform"] + + +class LogicbonePlatform(LatticeECP5Platform): + name = "Logicbone" + device = "LFE5UM5G-45F" + package = "BG381" + speed = "8" + + default_clk = "refclk" + + resources = [ + Resource("refclk", 0, Pins("M19", dir="i"), + Clock(25e6), Attrs(IO_TYPE="LVCMOS18")), + + # SerDes connections. + Resource("serdes", 0, + Subsignal("rx", DiffPairs("Y5", "Y6")), + Subsignal("tx", DiffPairs("W4", "W5")), + ), + Resource("serdes", 1, + Subsignal("rx", DiffPairs("Y8", "Y7")), + Subsignal("tx", DiffPairs("W8", "W9")), + ), + + # VBUS Detection is on the USB-C PD controller for both ports. + DirectUSBResource("usb", 0, + d_p="B12", d_n="C12", pullup="C16", + attrs=Attrs(IO_TYPE="LVCMOS33") + ), + DirectUSBResource("usb", 1, + d_p="R1", d_n="T1", pullup="T2", + attrs=Attrs(IO_TYPE="LVCMOS33") + ), + + *LEDResources(pins="D16 C15 C13 B13", attrs=Attrs(IO_TYPE="LVCMOS33"), invert=True), + + *ButtonResources(pins="U2", attrs=Attrs(IO_TYPE="LVCMOS33"), invert=True), + + *SPIFlashResources(0, + cs_n="R2", clk="U3", cipo="V2", copi="W2", wp_n="Y2", hold_n="W1", + attrs=Attrs(IO_TYPE="LVCMOS33") + ), + + *SDCardResources(0, + clk="E11", cmd="D15", cd="D14", + dat0="D13", dat1="E13", dat2="E15", dat3="E13", + attrs=Attrs(IO_TYPE="LVCMOS33") + ), + + Resource("eth_clk125", 0, Pins("A19", dir="i"), + Clock(125e6), Attrs(IO_TYPE="LVCMOS33")), + Resource("eth_rgmii", 0, + # Stolen for sys_reset usage on prototypes. + # Subsignal("rst", PinsN("U17", dir="o")), + Subsignal("int", Pins("B20", dir="i")), + Subsignal("mdc", Pins("D12", dir="o")), + Subsignal("mdio", Pins("B19", dir="io")), + Subsignal("tx_clk", Pins("A15", dir="o")), + Subsignal("tx_ctl", Pins("B15", dir="o")), + Subsignal("tx_data", Pins("A12 A13 C14 A14", dir="o")), + Subsignal("rx_clk", Pins("B18", dir="i")), + Subsignal("rx_ctl", Pins("A18", dir="i")), + Subsignal("rx_data", Pins("B17 A17 B16 A16", dir="i")), + Attrs(IO_TYPE="LVCMOS33") + ), + + Resource("ddr3", 0, + Subsignal("rst", PinsN("P1", dir="o")), + Subsignal("clk", DiffPairs("M4", "N5", dir="o"), Attrs(IO_TYPE="LVDS")), + Subsignal("clk_en", Pins("K4", dir="o")), + Subsignal("cs", PinsN("M3", dir="o")), + Subsignal("we", PinsN("E4", dir="o")), + Subsignal("ras", PinsN("L1", dir="o")), + Subsignal("cas", PinsN("M1", dir="o")), + Subsignal("a", Pins("D5 F4 B3 F3 E5 C3 C4 A5 A3 B5 G3 F5 D2 A4 D3 E3", dir="o")), + Subsignal("ba", Pins("B4 H5 N2", dir="o")), + Subsignal("dqs", DiffPairs("K2 H4", "J1 G5", dir="io"), Attrs(IO_TYPE="LVDS")), + Subsignal("dq", Pins("G2 K1 F1 K3 H2 J3 G1 H1 B1 E1 A2 F2 C1 E2 C2 D1", dir="io")), + Subsignal("dm", Pins("L4 J5", dir="o")), + Subsignal("odt", Pins("C5", dir="o")), + Attrs(IO_TYPE="SSTL135_I") + ) + ] + connectors = [ + Connector("P8", 0, """ + - - C20 D19 D20 E19 E20 F19 F20 G20 - - - - - - + - - - - - - G19 H20 J20 K20 C18 D17 D18 E17 E18 F18 + F17 G18 E16 F16 G16 H16 J17 J16 H18 H17 J19 K19 J18 K18 + """), + Connector("P9", 0, """ + - - - - - - - - - - - A11 B11 A10 C10 A9 + B9 C11 A8 - - D9 C8 B8 A7 A6 B6 D8 C7 D7 C6 D6 + - - - - - - - - - B10 E10 - - - + """), + ] + + def toolchain_prepare(self, fragment, name, **kwargs): + overrides = dict(ecppack_opts="--compress --spimode qspi --freq 38.8") + overrides.update(kwargs) + return super().toolchain_prepare(fragment, name, **overrides) + + def toolchain_program(self, products, name): + dfu_util = os.environ.get("DFU_UTIL", "dfu-util") + with products.extract("{}.bit".format(name)) as bitstream_filename: + subprocess.check_call([ + dfu_util, "-d", "1d50:615d", "-a", "0", "-R", + "-D", bitstream_filename + ]) + + +class Logicbone85FPlatform(LogicbonePlatform): + name = "Logicbone (85F Variant)" + device = "LFE5UM5G-85F" + + +if __name__ == "__main__": + import argparse + from .test.blinky import Blinky + + parser = argparse.ArgumentParser() + parser.add_argument("--variant", choices=("85", "45"), default="45", + help="platform variant (default: %(default)s)") + + args = parser.parse_args() + if args.variant == "45": + platform = LogicbonePlatform() + if args.variant == "85": + platform = Logicbone85FPlatform() + platform.build(Blinky(), do_program=True) |