litex-boards/litex_boards/platforms/pano_logic_g2.py

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#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2019 Tom Keddie <git@bronwenandtom.com>
# Copyright (c) 2020 Antmicro <www.antmicro.com>
# Copyright (c) 2020 Florent Kermarrec <florent@enjoy-digital.fr>
# SPDX-License-Identifier: BSD-2-Clause
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# The Pano Logic Zero Client G2 is a thin commercial client from Pano Logic that can be repurposed
# as a generic development board thanks to reverse engineering efforts than can be found at:
# https://github.com/tomverbeure/panologic-g2
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from litex.build.generic_platform import *
from litex.build.xilinx import XilinxSpartan6Platform
from litex.build.openocd import OpenOCD
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# IOs ----------------------------------------------------------------------------------------------
_io = [
# Clk / Rst
("clk125", 0, Pins("Y13"), IOStandard("LVCMOS33")),
("rst_n", 0, Pins("AB14"), IOStandard("LVCMOS33")),
# Leds
("user_led", 0, Pins("E12"), IOStandard("LVCMOS33")),
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("user_led", 1, Pins("H13"), IOStandard("LVCMOS33")),
("user_led", 2, Pins("F13"), IOStandard("LVCMOS33")),
# Buttons
("user_btn_n", 0, Pins("H12"), IOStandard("LVCMOS33")),
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# Serial
("serial", 0, # hdmi
Subsignal("tx", Pins("AB19")),
Subsignal("rx", Pins("AA21")),
IOStandard("LVCMOS33")
),
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# Serial
("serial", 1, # dvi
Subsignal("tx", Pins("C14")),
Subsignal("rx", Pins("C17")),
IOStandard("LVCMOS33")
),
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# SPIFlash
("spiflash", 0,
Subsignal("cs_n", Pins("T5"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("Y21"), IOStandard("LVCMOS33")),
Subsignal("mosi", Pins("AB20"), IOStandard("LVCMOS33")),
Subsignal("miso", Pins("AA20"), IOStandard("LVCMOS33"))
),
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# DDR2 SDRAM
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("ddram_clock_a", 0,
Subsignal("p", Pins("H20")),
Subsignal("n", Pins("J19")),
IOStandard("DIFF_SSTL18_II"), Misc("IN_TERM=NONE")
),
("ddram_a", 0,
Subsignal("a", Pins(
"F21 F22 E22 G20 F20 K20 K19 E20",
"C20 C22 G19 F19 D22"),
IOStandard("SSTL18_II")),
Subsignal("ba", Pins("J17 K17 H18"), IOStandard("SSTL18_II")),
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Subsignal("ras_n", Pins("H21"), IOStandard("SSTL18_II")),
Subsignal("cas_n", Pins("H22"), IOStandard("SSTL18_II")),
Subsignal("we_n", Pins("H19"), IOStandard("SSTL18_II")),
Subsignal("dm", Pins("M20 L19"), IOStandard("SSTL18_II")),
Subsignal("dq", Pins(
"N20 N22 M21 M22 J20 J22 K21 K22",
"P21 P22 R20 R22 U20 U22 V21 V22"),
IOStandard("SSTL18_II")),
Subsignal("dqs", Pins("T21 L20"), IOStandard("DIFF_SSTL18_II")),
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Subsignal("dqs_n", Pins("T22 L22"), IOStandard("DIFF_SSTL18_II")),
Subsignal("cke", Pins("D21"), IOStandard("SSTL18_II")),
Subsignal("odt", Pins("G22"), IOStandard("SSTL18_II")),
),
("ddram_clock_b", 0,
Subsignal("p", Pins("H4")),
Subsignal("n", Pins("H3")),
IOStandard("DIFF_SSTL18_II"), Misc("IN_TERM=NONE")
),
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("ddram_b", 0,
Subsignal("a", Pins(
"H2 H1 H5 K6 F3 K3 J4 H6",
"E3 E1 G4 C1 D1"),
IOStandard("SSTL18_II")),
Subsignal("ba", Pins("G3 G1 F1"), IOStandard("SSTL18_II")),
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Subsignal("ras_n", Pins("K5"), IOStandard("SSTL18_II")),
Subsignal("cas_n", Pins("K4"), IOStandard("SSTL18_II")),
Subsignal("we_n", Pins("F2"), IOStandard("SSTL18_II")),
Subsignal("dm", Pins("M3 L4"), IOStandard("SSTL18_II")),
Subsignal("dq", Pins(
"N3 N1 M2 M1 J3 J1 K2 K1",
"P2 P1 R3 R1 U3 U1 V2 V1"),
IOStandard("SSTL18_II")),
Subsignal("dqs", Pins("T2 L3"), IOStandard("DIFF_SSTL18_II")),
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Subsignal("dqs_n", Pins("T1 L1"), IOStandard("DIFF_SSTL18_II")),
Subsignal("cke", Pins("D2"), IOStandard("SSTL18_II")),
Subsignal("odt", Pins("J6"), IOStandard("SSTL18_II")),
),
# GMII Ethernet
("eth_rst_n", 0, Pins("R11"), IOStandard("LVCMOS33")),
("eth_clocks", 0,
Subsignal("tx", Pins("Y11")),
Subsignal("gtx", Pins("AA12")),
Subsignal("rx", Pins("AB11")),
IOStandard("LVCMOS33")
),
("eth", 0,
Subsignal("rst_n", Pins("R11")),
Subsignal("int_n", Pins("AA4")),
Subsignal("mdio", Pins("AA2")),
Subsignal("mdc", Pins("AB6")),
Subsignal("rx_dv", Pins("Y7")),
Subsignal("rx_er", Pins("Y8")),
Subsignal("rx_data", Pins("Y3 Y4 R9 R7 V9 R8 U9 Y9")),
Subsignal("tx_en", Pins("AA8")),
Subsignal("tx_er", Pins("AB8")),
Subsignal("tx_data", Pins("AB2 AB3 AB4 AB7 AB9 AB10 T7 Y10")),
Subsignal("col", Pins("V7")),
Subsignal("crs", Pins("W4")),
IOStandard("LVCMOS33")
),
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]
# Platform -----------------------------------------------------------------------------------------
class Platform(XilinxSpartan6Platform):
default_clk_name = "clk125"
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default_clk_period = 1e9/125e6
def __init__(self, revision="c", toolchain="ise"):
assert revision in ["b", "c"]
device = {"b": "xc6slx150-2-fgg484", "c": "xc6slx100-2-fgg484"}[revision]
XilinxSpartan6Platform.__init__(self, device, _io, toolchain=toolchain)
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self.add_platform_command("""CONFIG VCCAUX="2.5";""")
self.add_period_constraint(self.lookup_request("clk125", loose=True), 1e9/125e6)
def create_programmer(self):
return OpenOCD("openocd_xc6_ft232.cfg")