208 lines
8.1 KiB
Python
208 lines
8.1 KiB
Python
#
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# This file is part of LiteX-Boards.
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#
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# Copyright (c) 2022 Icenowy Zheng <icenowy@aosc.io>
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# Copyright (c) 2022 Florent Kermarrec <florent@enjoy-digital.fr>
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# SPDX-License-Identifier: BSD-2-Clause
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from migen import *
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from litex.build.generic_platform import *
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from litex.build.gowin.platform import GowinPlatform
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from litex.build.gowin.programmer import GowinProgrammer
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from litex.build.openfpgaloader import OpenFPGALoader
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# IOs ----------------------------------------------------------------------------------------------
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_io = [
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# Clk / Rst.
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("clk27", 0, Pins("H11"), IOStandard("LVCMOS33")),
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# SPIFlash.
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("spiflash", 0,
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Subsignal("cs_n", Pins("M9"), IOStandard("LVCMOS33")),
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Subsignal("clk", Pins("L10"), IOStandard("LVCMOS33")),
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Subsignal("miso", Pins("P10"), IOStandard("LVCMOS33")),
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Subsignal("mosi", Pins("R10"), IOStandard("LVCMOS33")),
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),
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# SDCard.
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("spisdcard", 0,
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Subsignal("clk", Pins("N10")),
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Subsignal("mosi", Pins("R14")),
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Subsignal("cs_n", Pins("N11")),
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Subsignal("miso", Pins("M8")),
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IOStandard("LVCMOS33"),
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),
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("sdcard", 0,
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Subsignal("data", Pins("M8 M7 M10 N11")),
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Subsignal("cmd", Pins("R14")),
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Subsignal("clk", Pins("N10")),
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Subsignal("cd", Pins("D15")),
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IOStandard("LVCMOS33"),
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),
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]
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# Dock 204 Pins SODIMM Connector -------------------------------------------------------------------
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_connectors = [
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["CARD1",
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# A.
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# -------------------------------------------------
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"---", # 0
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# GND GND 5V 5V 5V 5V GND GND NC ( 1-10).
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" T13 --- --- --- --- --- --- --- --- ---",
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# NC GND GND NC NC NC GND GND (11-20).
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" M11 --- --- --- T10 --- --- --- --- ---",
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# NC 3V3 NC 3V3 GND GND (21-30).
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" --- --- --- --- --- --- T6 R16 P6 P15",
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# GND GND GND GND (31-40).
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" --- --- T7 P16 R8 N15 --- --- T8 N16",
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# GND GND (41-50).
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" M6 N14 GND L16 T9 L14 P9 --- --- K15",
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# GND GND GND (51-60).
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" P11 K14 T11 --- --- K16 R11 J15 T12 ---",
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# GND GND (61-70).
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" --- H16 R12 H14 P13 --- R13 G16 T14 H15",
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# GND GND (71-72).
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" --- ---",
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# B.
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# -------------------------------------------------
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# NC (73-82).
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" M15 L13 M14 K11 F13 K12 G12 K13 T15 ---",
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# NC NC (83-92).
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" J16 H13 J14 J12 --- --- G14 H12 G15 G11",
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# NC NC NC NC E15 NC (93-102).
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" --- --- F14 B10 F16 A13 --- --- --- ---",
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# NC NC NC NC NC NC NC (103-112).
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" D15 --- --- --- A15 --- B14 --- --- ---",
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# NC NC NC NC NC NC (113-122).
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" A14 --- B13 --- --- --- C12 --- B12 ---",
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# NC NC GND GND (123-132).
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" A12 --- C11 --- --- --- B11 E15 A11 F15",
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# GND GND NC GND GND NC (133-142).
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" --- --- C10 C13 --- --- --- D16 --- E14",
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# GND GND GND GND (143-152).
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" B8 --- --- C9 C6 A9 A7 --- --- L12",
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# GND GBD GND GND (153-162).
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" A6 J11 --- --- C7 E9 D7 E8 --- ---",
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# VCC VCC GND GND VCC GND (163-172).
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" T2 --- T3 --- --- --- T4 --- T5 ---",
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# GND VCC GND GND (173-182).
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" --- --- N6 F10 N7 --- --- D11 N9 D10",
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# GND GND NC NC GND GND (183-192).
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" R9 --- --- E10 --- --- --- --- N8 R7",
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# GND GND NC NC NC NC (193-202).
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" L9 P7 --- --- --- M6 --- L8 --- ---",
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# NC NC (203-204).
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" --- ---",
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],
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]
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# Dock IOs -----------------------------------------------------------------------------------------
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_dock_io = [
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# Leds
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("led", 0, Pins( "CARD1:44"), IOStandard("LVCMOS18")),
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("led", 1, Pins( "CARD1:46"), IOStandard("LVCMOS18")),
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("led", 3, Pins( "CARD1:40"), IOStandard("LVCMOS18")),
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("led", 2, Pins( "CARD1:42"), IOStandard("LVCMOS18")),
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("led", 4, Pins( "CARD1:98"), IOStandard("LVCMOS18")),
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("led", 5, Pins("CARD1:136"), IOStandard("LVCMOS18")),
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# RGB Led.
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("rgb_led", 0, Pins("CARD1:45"), IOStandard("LVCMOS18")),
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# Buttons.
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("btn_n", 0, Pins( "CARD1:15"), IOStandard("LVCMOS18")),
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("btn_n", 1, Pins("CARD1:165"), IOStandard("LVCMOS15")),
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("btn_n", 2, Pins("CARD1:163"), IOStandard("LVCMOS15")),
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("btn_n", 3, Pins("CARD1:159"), IOStandard("LVCMOS15")),
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("btn_n", 4, Pins("CARD1:157"), IOStandard("LVCMOS15")),
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# Serial.
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("serial", 0,
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Subsignal("rx", Pins( "CARD1:1")),
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Subsignal("tx", Pins("CARD1:11")),
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IOStandard("LVCMOS33")
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),
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# HDMI.
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("hdmi", 0,
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Subsignal("clk_p", Pins("CARD1:132")),
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Subsignal("clk_n", Pins("CARD1:130")),
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Subsignal("data0_p", Pins("CARD1:50")), # Inverted.
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Subsignal("data0_n", Pins("CARD1:52")),
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Subsignal("data1_p", Pins("CARD1:62")), # Inverted.
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Subsignal("data1_n", Pins("CARD1:64")),
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Subsignal("data2_p", Pins("CARD1:68")), # Inverted.
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Subsignal("data2_n", Pins("CARD1:70")),
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Subsignal("hdp", Pins("CARD1:154"), IOStandard("LVCMOS18")),
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Subsignal("cec", Pins("CARD1:152"), IOStandard("LVCMOS18")),
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Subsignal("sda", Pins("CARD1:95"), IOStandard("LVCMOS18")),
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Subsignal("scl", Pins("CARD1:97"), IOStandard("LVCMOS18")),
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Misc("PULL_MODE=NONE"),
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),
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# LCD.
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("lcd", 0,
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# Control.
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Subsignal("rst", Pins("CARD1:123")),
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Subsignal("bl", Pins("CARD1:186")),
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Subsignal("sda", Pins("CARD1: 95")),
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Subsignal("scl", Pins("CARD1: 97")),
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Subsignal("int", Pins("CARD1:125")),
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# Video.
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Subsignal("clk", Pins("CARD1:183")),
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Subsignal("de", Pins("CARD1:101")),
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Subsignal("hsync", Pins("CARD1:107")),
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Subsignal("vsync", Pins("CARD1:103")),
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Subsignal("r", Pins("CARD1:193 CARD1:191 CARD1:181 CARD1:177 CARD1:175")),
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Subsignal("g", Pins("CARD1:180 CARD1:131 CARD1:129 CARD1:194 CARD1:192 CARD1:182")),
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Subsignal("b", Pins("CARD1:121 CARD1:119 CARD1:115 CARD1:113 CARD1:109")),
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IOStandard("LVCMOS18")
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),
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# RMII Ethernet
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("eth_clocks", 0,
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Subsignal("ref_clk", Pins("CARD1:148")),
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IOStandard("LVCMOS18"),
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),
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("eth", 0,
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Subsignal("rst_n", Pins("CARD1:176")),
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Subsignal("rx_data", Pins("CARD1:56 CARD1:146")),
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Subsignal("crs_dv", Pins("CARD1:41")),
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Subsignal("tx_en", Pins("CARD1:83")),
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Subsignal("tx_data", Pins("CARD1:140 CARD1:142")),
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Subsignal("mdc", Pins("CARD1:95")),
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Subsignal("mdio", Pins("CARD1:97")),
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Subsignal("rx_er", Pins("CARD1:200")),
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#Subsignal("int_n", Pins("CARD1:")),
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IOStandard("LVCMOS18")
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),
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]
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# Platform -----------------------------------------------------------------------------------------
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class Platform(GowinPlatform):
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default_clk_name = "clk27"
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default_clk_period = 1e9/27e6
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def __init__(self, toolchain="gowin"):
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GowinPlatform.__init__(self, "GW2A-LV18PG256C8/I7", _io, _connectors, toolchain=toolchain, devicename="GW2A-18C")
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self.add_extension(_dock_io)
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self.toolchain.options["use_mspi_as_gpio"] = 1
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self.toolchain.options["use_sspi_as_gpio"] = 1
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self.toolchain.options["use_ready_as_gpio"] = 1
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self.toolchain.options["use_done_as_gpio"] = 1
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self.toolchain.options["rw_check_on_ram"] = 1
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def create_programmer(self, kit="openfpgaloader"):
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return OpenFPGALoader(cable="ft2232")
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def do_finalize(self, fragment):
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GowinPlatform.do_finalize(self, fragment)
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self.add_period_constraint(self.lookup_request("clk27", loose=True), 1e9/27e6)
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