butterstick: add board defn for r1.0

Author: Tom Keddie

amaranth_boards/butterstick.py

@@ -0,0 +1,181 @@
+import os
+import subprocess
+import shutil
+
+from amaranth.build import *
+from amaranth.vendor.lattice_ecp5 import *
+from .resources import *
+
+
+__all__ = ["ButterStickPlatform"]
+
+
+class ButterStickPlatform(LatticeECP5Platform):
+    device      = "LFE5UM5G-85F"
+    package     = "BG381"
+    speed       = "8"
+    default_clk = "clk30"
+
+    def ulpi_io_type(self):
+        return _vccio_iotype(2)
+
+    resources   = [
+        Resource("clk30", 0, Pins("B12", dir="i"),
+                 Clock(30e6), Attrs(IO_TYPE="LVCMOS33")),
+
+        # LED Anodes
+        *LEDResources(pins="C13 D12 U2 T3 D13 E13 C16", attrs=Attrs(IO_TYPE="LVCMOS33")),
+
+        # LED Cathodes. Use invert to default as on to allow LEDs to be used in white with single bit IO
+        # note that G and B are swapped to match the LEDs and not the schematic labels
+        RGBLEDResource(0, r="T1", g="U1", b="R1", invert=True, attrs=Attrs(IO_TYPE="LVCMOS33")),
+
+        *ButtonResources(
+            pins={0: "U16", 1: "T17" }, invert=True,
+            attrs=Attrs(IO_TYPE="SSTL135_I")),
+
+        *SPIFlashResources(0,
+            cs_n="R2", clk="U3", cipo="V2", copi="W2", wp_n="Y2", hold_n="W1",
+            attrs=Attrs(IO_TYPE="LVCMOS33", SLEWRATE="FAST"),
+        ),
+
+        *SDCardResources("sdcard", 0,
+            clk="B13", cmd="A13", dat0="C12", dat1="A12", dat2="D14", dat3="A14",
+            attrs=Attrs(IO_TYPE="LVCMOS33", SLEWRATE="FAST"),
+        ),
+
+        Resource("ddr3", 0,
+            Subsignal("rst",     PinsN("E17", dir="o")),
+            Subsignal("clk",     DiffPairs("C20", "J19", dir="o"), Attrs(IO_TYPE="SSTL135D_I")),
+            Subsignal("clk_en",  Pins("F18 J18", dir="o")),
+            Subsignal("cs",      PinsN("J20 J16", dir="o")),
+            Subsignal("we",      PinsN("G19", dir="o")),
+            Subsignal("ras",     PinsN("K18", dir="o")),
+            Subsignal("cas",     PinsN("J17", dir="o")),
+            Subsignal("a",       Pins("G16 E19 E20 F16 F19 E16 F17 L20 M20 E18 G18 D18 H18 C18 D17 G20", dir="o")),
+            Subsignal("ba",      Pins("H16 F20 H20", dir="o")),
+            Subsignal("dqs",     DiffPairs("T19 N16", "R18 M17", dir="io"),
+                      Attrs(IO_TYPE="SSTL135D_I", TERMINATION="OFF",
+                      DIFFRESISTOR="100")),
+            Subsignal("dq",      Pins("U19 T18 U18 R20 P18 P19 P20 N20 L19 L17 L16 R16 N18 R17 N17 P17",
+                                      dir="io"), Attrs(TERMINATION="75")),
+            Subsignal("dm",      Pins("U20 L18", dir="o")),
+            Subsignal("odt",     Pins("K20 H17", dir="o")),
+            Attrs(IO_TYPE="SSTL135_I", SLEWRATE="FAST")
+        ),
+
+        Resource("eth_rgmii", 0,
+            Subsignal("rst",     PinsN("B20", dir="o")),
+            Subsignal("mdc",     Pins("A19", dir="o")),
+            Subsignal("mdio",    Pins("D16", dir="io")),
+            Subsignal("tx_clk",  Pins("E15", dir="o")),
+            Subsignal("tx_ctl",  Pins("D15", dir="o")),
+            Subsignal("tx_data", Pins("C15 B16 A18 B19", dir="o")),
+            Subsignal("rx_clk",  Pins("D11", dir="i")),
+            Subsignal("rx_ctl",  Pins("B18", dir="i")),
+            Subsignal("rx_data", Pins("A16 C17 B17 A17", dir="i")),
+            Attrs(IO_TYPE="LVCMOS33", SLEWRATE="FAST")
+        ),
+
+        ULPIResource(0, data="B9 C6 A7 E9 A8 D9 C10 C7",
+                     rst="C9", clk="B6", dir="A6", stp="C8", nxt="B8",
+                     clk_dir="o", rst_invert=True, attrs=Attrs(IO_TYPE="LVCMOS18")),
+
+        I2CResource(0, scl="E14", sda="C14",
+                    attrs=Attrs(IO_TYPE="LVCMOS33")),
+
+        # SYGYZY VIO level control pwm pins (use with care)
+        Resource("vccio_ctrl", 0,
+                 Subsignal("pdm", Pins("V1 E11 T2", dir="o")),
+                 Subsignal("en", Pins("E12", dir="o")),
+                 Attrs(IO_TYPE="LVCMOS33")
+        ),
+        # Used to reload FPGA configuration (drives program_n)
+        Resource("program", 0, PinsN("R3", dir="o"), Attrs(IO_TYPE="LVCMOS33")),
+    ]
+    connectors = [
+        Connector("syzygy", 0, {
+            # single ended
+            "S0":"G2",  "S1":"J3",
+            "S2":"F1",  "S3":"K3",
+            "S4":"J4",  "S5":"K2",
+            "S6":"J5",  "S7":"J1",
+            "S8":"N2",  "S9":"L3",
+            "S10":"M1", "S11":"L2",
+            "S12":"N3", "S13":"N4",
+            "S14":"M3", "S15":"P5",
+            "S16":"H1", "S17":"K5",
+            "S18":"K4", "S19":"K1",
+            "S20":"L4", "S21":"L1",
+            "S22":"L5", "S23":"M4",
+            "S24":"N1", "S25":"N5",
+            "S26":"P3", "S27":"P4",
+            "S28":"H2", "S29":"P1",
+            "S30":"G1", "S31":"P2",
+            # diff pairs
+
+        }),
+        Connector("syzygy", 1, {
+            # single ended
+            
+            # diff pairs
+            "D0P":"E4", "D0N":"D5",
+            "D1P":"A4", "D1N":"A5",
+            "D2P":"C4", "D2N":"B4",
+            "D3P":"B2", "D3N":"C2",
+            "D4P":"A2", "D4N":"B1",
+            "D5P":"C1", "D5N":"D1",
+            "D6P":"F4", "D6N":"E3",
+            "D7P":"D2", "D7N":"E1",
+        }),
+    ]
+
+    def __init__(self, *, vccio_enable=True, vccio_voltages = [ 3.3, 3.3, 1.8 ], **kwargs):
+        super().__init__(**kwargs)
+        self._vccio_enable   = vccio_enable
+        self._vccio_voltages = vccio_voltages
+
+    def vccio_voltage(self, vccio_index):
+        if not self._vccio_enable:
+            return None
+        else:
+            return self._vccio_voltages[vccio_index]
+
+    def _vccio_iotype(self, vccio_index):
+        if not self._vccio_enable or self._vccio_voltages[vccio_index] == 3.3:
+            return "LVCMOS33"
+        if self._vccio_voltages[vccio_index] == 2.5:
+            return "LVCMOS25"
+        if self._vccio_voltages[vccio_index] == 1.8:
+            return "LVCMOS18"
+        assert False
+
+    @property
+    def required_tools(self):
+        return super().required_tools + [
+            "dfu-suffix"
+        ]
+
+    @property
+    def command_templates(self):
+        return super().command_templates + [
+            r"""
+            {{invoke_tool("dfu-suffix")}}
+                -v 1209 -p 5af1 -a {{name}}.bit
+            """
+        ]
+
+    def toolchain_prepare(self, fragment, name, **kwargs):
+        overrides = dict(ecppack_opts="--compress --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, "-a", "0", "-D", bitstream_filename, "-R"])
+
+
+if __name__ == "__main__":
+    from .test.blinky import *
+    ButterStickPlatform().build(Blinky(), do_program=True)