litex-boards/litex_boards/platforms/ulx3s.py

176 lines
5.5 KiB
Python
Raw Normal View History

#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2018-2019 Florent Kermarrec <florent@enjoy-digital.fr>
# SPDX-License-Identifier: BSD-2-Clause
2019-06-10 11:09:51 -04:00
from litex.build.generic_platform import *
from litex.build.lattice import LatticePlatform
from litex.build.lattice.programmer import UJProg
2019-06-10 11:09:51 -04:00
# IOs ----------------------------------------------------------------------------------------------
_io_common = [
# Clk / Rst
2019-06-10 11:09:51 -04:00
("clk25", 0, Pins("G2"), IOStandard("LVCMOS33")),
("rst", 0, Pins("R1"), IOStandard("LVCMOS33")),
2019-06-10 11:09:51 -04:00
# Leds
2019-06-10 11:09:51 -04:00
("user_led", 0, Pins("B2"), IOStandard("LVCMOS33")),
("user_led", 1, Pins("C2"), IOStandard("LVCMOS33")),
("user_led", 2, Pins("C1"), IOStandard("LVCMOS33")),
("user_led", 3, Pins("D2"), IOStandard("LVCMOS33")),
("user_led", 4, Pins("D1"), IOStandard("LVCMOS33")),
("user_led", 5, Pins("E2"), IOStandard("LVCMOS33")),
("user_led", 6, Pins("E1"), IOStandard("LVCMOS33")),
("user_led", 7, Pins("H3"), IOStandard("LVCMOS33")),
2019-06-10 11:09:51 -04:00
# Serial
2019-06-10 11:09:51 -04:00
("serial", 0,
Subsignal("tx", Pins("L4"), IOStandard("LVCMOS33")),
Subsignal("rx", Pins("M1"), IOStandard("LVCMOS33"))
),
# SDR SDRAM
("sdram_clock", 0, Pins("F19"), IOStandard("LVCMOS33")),
2019-06-10 11:09:51 -04:00
("sdram", 0,
Subsignal("a", Pins(
"M20 M19 L20 L19 K20 K19 K18 J20",
"J19 H20 N19 G20 G19")),
Subsignal("dq", Pins(
"J16 L18 M18 N18 P18 T18 T17 U20",
"E19 D20 D19 C20 E18 F18 J18 J17")),
Subsignal("we_n", Pins("T20")),
2019-06-10 11:09:51 -04:00
Subsignal("ras_n", Pins("R20")),
Subsignal("cas_n", Pins("T19")),
Subsignal("cs_n", Pins("P20")),
Subsignal("cke", Pins("F20")),
Subsignal("ba", Pins("P19 N20")),
Subsignal("dm", Pins("U19 E20")),
IOStandard("LVCMOS33"),
Misc("SLEWRATE=FAST"),
2019-06-10 11:09:51 -04:00
),
# GPIOs
2019-06-10 11:09:51 -04:00
("gpio", 0,
Subsignal("p", Pins("B11")),
Subsignal("n", Pins("C11")),
IOStandard("LVCMOS33")
),
("gpio", 1,
Subsignal("p", Pins("A10")),
Subsignal("n", Pins("A11")),
IOStandard("LVCMOS33")
),
("gpio", 2,
Subsignal("p", Pins("A9")),
Subsignal("n", Pins("B10")),
IOStandard("LVCMOS33")
),
("gpio", 3,
Subsignal("p", Pins("B9")),
Subsignal("n", Pins("C10")),
IOStandard("LVCMOS33")
),
2020-04-14 08:53:46 -04:00
# USB
2020-04-14 08:53:46 -04:00
("usb", 0,
Subsignal("d_p", Pins("D15")),
Subsignal("d_n", Pins("E15")),
Subsignal("pullup", Pins("B12 C12")),
IOStandard("LVCMOS33")
),
# SPIFlash
("spiflash", 0,
Subsignal("cs_n", Pins("R2")),
Subsignal("miso", Pins("V2")),
Subsignal("mosi", Pins("W2")),
Subsignal("wp", Pins("Y2")),
Subsignal("hold", Pins("W1")),
IOStandard("LVCMOS33")
),
("spiflash4x", 0,
Subsignal("cs_n", Pins("R2")),
Subsignal("dq", Pins("W2", "V2", "Y2", "W1")),
IOStandard("LVCMOS33")
),
# OLED
("oled_spi", 0,
Subsignal("clk", Pins("P4")),
Subsignal("mosi", Pins("P3")),
IOStandard("LVCMOS33"),
),
("oled_ctl", 0,
Subsignal("dc", Pins("P1")),
Subsignal("resn", Pins("P2")),
Subsignal("csn", Pins("N2")),
IOStandard("LVCMOS33"),
),
# Others
("wifi_gpio0", 0, Pins("L2"), IOStandard("LVCMOS33")),
("ext0p", 0, Pins("B11"), IOStandard("LVCMOS33")),
("ext1p", 0, Pins("A10"), IOStandard("LVCMOS33")),
2019-06-10 11:09:51 -04:00
]
_io_1_7 = [
# SDCard
("spisdcard", 0,
Subsignal("clk", Pins("J1")),
Subsignal("mosi", Pins("J3"), Misc("PULLMODE=UP")),
Subsignal("cs_n", Pins("H1"), Misc("PULLMODE=UP")),
Subsignal("miso", Pins("K2"), Misc("PULLMODE=UP")),
Misc("SLEWRATE=FAST"),
IOStandard("LVCMOS33"),
),
("sdcard", 0,
Subsignal("clk", Pins("J1")),
Subsignal("cmd", Pins("J3"), Misc("PULLMODE=UP")),
Subsignal("data", Pins("K2 K1 H2 H1"), Misc("PULLMODE=UP")),
Misc("SLEWRATE=FAST"),
IOStandard("LVCMOS33"),
),
]
_io_2_0 = [
# SDCard
("spisdcard", 0,
Subsignal("clk", Pins("H2")),
Subsignal("mosi", Pins("J1"), Misc("PULLMODE=UP")),
Subsignal("cs_n", Pins("K2"), Misc("PULLMODE=UP")),
Subsignal("miso", Pins("J3"), Misc("PULLMODE=UP")),
Misc("SLEWRATE=FAST"),
IOStandard("LVCMOS33"),
),
("sdcard", 0,
Subsignal("clk", Pins("H2")),
Subsignal("cmd", Pins("J1"), Misc("PULLMODE=UP")),
Subsignal("data", Pins("J3 H1 K1 K2"), Misc("PULLMODE=UP")),
Subsignal("cd", Pins("N5")),
Subsignal("wp", Pins("P5")),
Misc("SLEWRATE=FAST"),
IOStandard("LVCMOS33"),
),
]
2019-06-10 11:09:51 -04:00
# Platform -----------------------------------------------------------------------------------------
class Platform(LatticePlatform):
default_clk_name = "clk25"
default_clk_period = 1e9/25e6
2019-06-10 11:09:51 -04:00
def __init__(self, device="LFE5U-45F", revision="2.0", toolchain="trellis", **kwargs):
2020-11-01 18:45:32 -05:00
assert device in ["LFE5U-12F", "LFE5U-25F", "LFE5U-45F", "LFE5U-85F"]
assert revision in ["1.7", "2.0"]
_io = _io_common + {"1.7": _io_1_7, "2.0": _io_2_0}[revision]
LatticePlatform.__init__(self, device + "-6BG381C", _io, toolchain=toolchain, **kwargs)
def create_programmer(self):
return UJProg()
def do_finalize(self, fragment):
LatticePlatform.do_finalize(self, fragment)
self.add_period_constraint(self.lookup_request("clk25", loose=True), 1e9/25e6)