platforms: add forest_kitten_33 initial platform suppport.

litex_boards/platforms/forest_kitten_33.py

@@ -0,0 +1,60 @@
+# This file is Copyright (c) 2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
+# The Forest Kitten 33 is a cryptocurrency mining accelerator card from SQRL that can be repurposed
+# as a generic FPGA PCIe development board: http://www.squirrelsresearch.com/forest-kitten-33
+
+from litex.build.generic_platform import *
+from litex.build.xilinx import XilinxPlatform, VivadoProgrammer
+
+# IOs ----------------------------------------------------------------------------------------------
+
+_io = [
+    ("clk200", 0,
+        Subsignal("p", Pins("BC26"), IOStandard("LVDS")),
+        Subsignal("n", Pins("BC27"), IOStandard("LVDS"))
+    ),
+
+    ("user_led", 0, Pins("BD25"), IOStandard("LVCMOS18")),
+    ("user_led", 1, Pins("BE26"), IOStandard("LVCMOS18")),
+    ("user_led", 2, Pins("BD23"), IOStandard("LVCMOS18")),
+    ("user_led", 3, Pins("BF26"), IOStandard("LVCMOS18")),
+    ("user_led", 4, Pins("BC25"), IOStandard("LVCMOS18")),
+    ("user_led", 5, Pins("BB26"), IOStandard("LVCMOS18")),
+    ("user_led", 6, Pins("BB25"), IOStandard("LVCMOS18")),
+
+    ("i2c",
+        Subsignal("scl", Pins("BB24"), IOStandard("LVCMOS18"), Misc("DRIVE=8")),
+        Subsignal("sda", Pins("BA24"), IOStandard("LVCMOS18"), Misc("DRIVE=8")),
+    ),
+
+    ("pcie_x16", 0,
+        Subsignal("rst_n", Pins("BE24"), IOStandard("LVCMOS18")),
+        Subsignal("clk_p", Pins("AD9")),
+        Subsignal("clk_n", Pins("AD8")),
+        Subsignal("rx_p",  Pins("AL2 AM4 AK4 AN2 AP4 AR2 AT4 AU2 AV4 AW2 BA2 BC2 AY4 BB4 BD4 BE6")),
+        Subsignal("rx_n",  Pins("AL1 AM3 AK3 AN1 AP3 AR1 AT3 AU1 AV3 AW1 BA1 BC1 AY3 BB3 BD3 BE5")),
+        Subsignal("tx_p",  Pins("Y5  AA7 AB5 AC7 AD5 AF5 AE7 AH5 AG7 AJ7 AL7 AM9 AN7 AP9 AR7 AT9")),
+        Subsignal("tx_n",  Pins("Y4  AA6 AB4 AC6 AD4 AF4 AE6 AH4 AG6 AJ6 AL6 AM8 AN6 AP8 AR6 AT8")),
+    ),
+]
+
+# Platform -----------------------------------------------------------------------------------------
+
+class Platform(XilinxPlatform):
+    default_clk_name   = "clk200"
+    default_clk_period = 1e9/200e6
+
+    def __init__(self):
+        XilinxPlatform.__init__(self, "xcvu33p-fsvh2104-2L-e", _io, toolchain="vivado")
+
+    def create_programmer(self):
+        return VivadoProgrammer()
+
+    def do_finalize(self, fragment):
+        XilinxPlatform.do_finalize(self, fragment)
+        self.add_period_constraint(self.lookup_request("clk200", loose=True), 1e9/200e6)
+        # Shutdown on overheatng
+        self.add_platform_command("set_property BITSTREAM.CONFIG.OVERTEMPSHUTDOWN ENABLE [current_design]")
+        # Reduce programming time
+        self.add_platform_command("set_property BITSTREAM.GENERAL.COMPRESS TRUE [current_design]")