Add AlchitryCuPlatform board file.

amaranth_boards/alchitry_cu.py

@@ -0,0 +1,63 @@
+import os
+import shutil
+import subprocess
+
+from amaranth.build import *
+from amaranth.vendor.lattice_ice40 import *
+from .resources import *
+
+__all__ = ["AlchitryCuPlatform"]
+
+def find_loader():
+    loader_prgm = os.environ.get("ALCHITRY_LOADER", shutil.which("alchitry-loader"))
+    if loader_prgm is None:
+        raise EnvironmentError("Could not find Alchitry Loader. Place "
+            "it directly in PATH or specify path explicitly via the "
+            "ALCHITRY_LOADER environment variable")
+    return loader_prgm
+
+class AlchitryCuPlatform(LatticeICE40Platform):
+    device      = "iCE40HX8K"
+    package     = "CB132"
+    speed       = "1"
+    default_clk = "clk100"
+    resources   = [
+        Resource(
+            "clk100", 0, Pins("P7", dir="i"), Clock(100e6), Attrs(GLOBAL=True,
+            IO_STANDARD="SB_LVCMOS")
+        ),
+
+        Resource("usb", 0,
+            Subsignal("usb_tx", Pins("P14", dir="o")),
+            Subsignal("usb_rx", Pins("M9", dir="i")),
+            Attrs(IO_STANDARD="LVCMOS")
+        ),
+
+        *SPIFlashResources(0,
+            cs_n="P13", clk="P12", copi="M11", cipo="P11",
+            attrs=Attrs(IO_STANDARD="SB_LVCMOS")
+        ),
+
+        *LEDResources(
+            pins="J11 K11 K12 K14 L12 L14 M12 N14", attrs=Attrs(IO_STANDARD="SB_LVCMOS")
+        ) 
+    ]
+
+    connectors  = [
+        Connector("bank", 0, "M1  L1  J1  J3  G1  G3  E1  D1  C1  B1  D3  C3  A1  A2  A3  A4"
+                             "P1  N1  K4  K3  H3  H1  G4  H4  F3  F4  E4  D4  C4  D5  C5  A5"),
+        Connector("bank", 1, "A6  A7  A10 A11 C9  C10 A12 B14 C14 D14 E14 E12 F14 G14 H12 J12"
+                             "C6  C7  D6  D7  D9  D10 C11 C12 D11 D12 E11 F11 F12 G12 G11 H11"),
+        Connector("bank", 2, "M3  M4  L4  L5  M6  M7  L9  -   -   -   -   -   -   -   -   -  "
+                             "P2  P3  P4  P5  L6  L8  P10 -   -   -   -   -   -   -   -   -  ")
+    ]
+
+    def toolchain_program(self, products, name):
+        loader = find_loader()
+        with products.extract("{}.bin".format(name)) as bitstream_filename:
+            subprocess.check_call([loader, "-t", "cu", "-e", "-f", bitstream_filename])
+
+if __name__ ==  "__main__":
+    from .test.blinky import Blinky
+    AlchitryCuPlatform().build(Blinky(), do_program=True)
+