Add iCEStick board. Tested with litescope.

litex/boards/platforms/icestick.py

@@ -0,0 +1,57 @@
+from litex.build.generic_platform import *
+from litex.build.lattice import LatticePlatform
+from litex.build.lattice.programmer import IceStormProgrammer
+
+
+_io = [
+    ("user_led", 0, Pins("99"), IOStandard("LVCMOS33")),
+    ("user_led", 1, Pins("98"), IOStandard("LVCMOS33")),
+    ("user_led", 2, Pins("97"), IOStandard("LVCMOS33")),
+    ("user_led", 3, Pins("96"), IOStandard("LVCMOS33")),
+    ("user_led", 4, Pins("95"), IOStandard("LVCMOS33")),
+
+    ("serial", 0,
+        Subsignal("rx", Pins("9")),
+        Subsignal("tx", Pins("8"), Misc("PULLUP")),
+        Subsignal("rts", Pins("7"), Misc("PULLUP")),
+        Subsignal("cts", Pins("4"), Misc("PULLUP")),
+        Subsignal("dtr", Pins("3"), Misc("PULLUP")),
+        Subsignal("dsr", Pins("2"), Misc("PULLUP")),
+        Subsignal("dcd", Pins("1"), Misc("PULLUP")),
+        IOStandard("LVTTL"),
+    ),
+
+    ("irda", 0,
+        Subsignal("rx", Pins("106")),
+        Subsignal("tx", Pins("105")),
+        Subsignal("sd", Pins("107")),
+        IOStandard("LVCMOS33")
+    ),
+
+    ("spiflash", 0,
+        Subsignal("cs_n", Pins("71"), IOStandard("LVCMOS33")),
+        Subsignal("clk", Pins("70"), IOStandard("LVCMOS33")),
+        Subsignal("mosi", Pins("67"), IOStandard("LVCMOS33")),
+        Subsignal("miso", Pins("68"), IOStandard("LVCMOS33"))
+    ),
+
+    ("clk12", 0, Pins("21"), IOStandard("LVCMOS33"))
+]
+
+_connectors = [
+    ("GPIO0", "44 45 47 48 56 60 61 62"),
+    ("GPIO1", "119 118 117 116 115 114 113 112"),
+    ("PMOD", "78 79 80 81 87 88 90 91")
+]
+
+
+class Platform(LatticePlatform):
+    default_clk_name = "clk12"
+    default_clk_period = 83.333
+
+    def __init__(self):
+        LatticePlatform.__init__(self, "ice40-1k-tq144", _io, _connectors,
+            toolchain="icestorm")
+
+    def create_programmer(self):
+        return IceStormProgrammer()