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litex-boards/litex_boards/platforms/digilent_arty_z7.py

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adding digilent_arty_z7 support
2021-12-20 12:02:57 -05:00
# This file is Copyright (c) 2019 Michael Betz <michibetz@gmail.com>
# License: BSD
from litex.build.generic_platform import Pins, IOStandard, Subsignal
from litex.build.xilinx import XilinxPlatform
from litex.build.openfpgaloader import OpenFPGALoader
# IOs ----------------------------------------------------------------------------------------------
_io = [
# Clk / Rst
("clk125", 0, Pins("H16"), IOStandard("LVCMOS33")),
# Leds
("user_led", 0, Pins("R14"), IOStandard("LVCMOS33")),
("user_led", 1, Pins("P14"), IOStandard("LVCMOS33")),
("user_led", 2, Pins("N16"), IOStandard("LVCMOS33")),
("user_led", 3, Pins("M14"), IOStandard("LVCMOS33")),
("rgb_led", 0,
Subsignal("r", Pins("N15")),
Subsignal("g", Pins("G17")),
Subsignal("b", Pins("L15")),
IOStandard("LVCMOS33"),
),
("rgb_led", 1,
Subsignal("r", Pins("M15")),
Subsignal("g", Pins("L14")),
Subsignal("b", Pins("G14")),
IOStandard("LVCMOS33"),
),
# Switches
("user_sw", 0, Pins("M20"), IOStandard("LVCMOS33")),
("user_sw", 1, Pins("M19"), IOStandard("LVCMOS33")),
# Buttons
("user_btn", 0, Pins("D19"), IOStandard("LVCMOS33")),
("user_btn", 1, Pins("D20"), IOStandard("LVCMOS33")),
("user_btn", 2, Pins("L20"), IOStandard("LVCMOS33")),
("user_btn", 3, Pins("L19"), IOStandard("LVCMOS33")),
# Serial (ust to make CI pass)
# Unfortunately the only USB UART is hard-wired to the ARM CPU
("serial", 0,
Subsignal("tx", Pins("Y18")),
Subsignal("rx", Pins("Y19")),
IOStandard("LVCMOS33"),
),
# SPI
("spi", 0,
Subsignal("clk", Pins("H15")),
Subsignal("cs_n", Pins("F16")),
Subsignal("mosi", Pins("T12")),
Subsignal("miso", Pins("W15")),
IOStandard("LVCMOS33"),
),
# I2C
("i2c", 0,
Subsignal("scl", Pins("P16")),
Subsignal("sda", Pins("P15")),
IOStandard("LVCMOS33"),
),
# Audio
("audio", 0,
Subsignal("pwm", Pins("R18")), # FIXME
Subsignal("sd", Pins("T17")), # FIXME
IOStandard("LVCMOS33"),
),
# HDMI In
("hdmi_in", 0,
Subsignal("clk_p", Pins("H17"), IOStandard("TMDS_33")),
Subsignal("clk_n", Pins("P19"), IOStandard("TMDS_33")),
Subsignal("data0_p", Pins("V20"), IOStandard("TMDS_33")),
Subsignal("data0_n", Pins("W20"), IOStandard("TMDS_33")),
Subsignal("data1_p", Pins("T20"), IOStandard("TMDS_33")),
Subsignal("data1_n", Pins("U20"), IOStandard("TMDS_33")),
Subsignal("data2_p", Pins("N20"), IOStandard("TMDS_33")),
Subsignal("data2_n", Pins("P20"), IOStandard("TMDS_33")),
Subsignal("scl", Pins("U14"), IOStandard("LVCMOS33")),
Subsignal("sda", Pins("U15"), IOStandard("LVCMOS33")),
Subsignal("hpd_en", Pins("T19"), IOStandard("LVCMOS33")),
Subsignal("cec", Pins("H17"), IOStandard("LVCMOS33")),
),
# HDMI Out
("hdmi_out", 0,
Subsignal("clk_p", Pins("L16"), IOStandard("TMDS_33")),
Subsignal("clk_n", Pins("L17"), IOStandard("TMDS_33")),
Subsignal("data0_p", Pins("K17"), IOStandard("TMDS_33")),
Subsignal("data0_n", Pins("K18"), IOStandard("TMDS_33")),
Subsignal("data1_p", Pins("K19"), IOStandard("TMDS_33")),
Subsignal("data1_n", Pins("J19"), IOStandard("TMDS_33")),
Subsignal("data2_p", Pins("J18"), IOStandard("TMDS_33")),
Subsignal("data2_n", Pins("H18"), IOStandard("TMDS_33")),
Subsignal("scl", Pins("M17"), IOStandard("LVCMOS33")),
Subsignal("sda", Pins("M18"), IOStandard("LVCMOS33")),
Subsignal("cec", Pins("G15"), IOStandard("LVCMOS33")),
Subsignal("hdp", Pins("R19"), IOStandard("LVCMOS33")),
),
# PS7
("ps7_clk", 0, Pins(1)),
("ps7_porb", 0, Pins(1)),
("ps7_srstb", 0, Pins(1)),
("ps7_mio", 0, Pins(54)),
("ps7_ddram", 0,
Subsignal("addr", Pins(15)),
Subsignal("ba", Pins(3)),
Subsignal("cas_n", Pins(1)),
Subsignal("ck_n", Pins(1)),
Subsignal("ck_p", Pins(1)),
Subsignal("cke", Pins(1)),
Subsignal("cs_n", Pins(1)),
Subsignal("dm", Pins(4)),
Subsignal("dq", Pins(32)),
Subsignal("dqs_n", Pins(4)),
Subsignal("dqs_p", Pins(4)),
Subsignal("odt", Pins(1)),
Subsignal("ras_n", Pins(1)),
Subsignal("reset_n", Pins(1)),
Subsignal("we_n", Pins(1)),
Subsignal("vrn", Pins(1)),
Subsignal("vrp", Pins(1)),
),
]
# Connectors ---------------------------------------------------------------------------------------
_connectors = [
# access a pin with `pmoda:N`, where N is:
# N: 0 1 2 3 4 5 6 7
# Pin: 1 2 3 4 7 8 9 10
# Bank 13
("pmoda", "Y18 Y19 Y16 Y17 U18 U19 W18 W19"),
("pmodb", "W14 Y14 T11 T10 V16 W16 V12 W13"),
("ck_io", {
"ck_ioa" : "Y13",
# Outer Digital Header
"ck_io0" : "T14",
"ck_io1" : "U12",
"ck_io2" : "U13",
"ck_io3" : "V13",
"ck_io4" : "V15",
"ck_io5" : "T15",
"ck_io6" : "R16",
"ck_io7" : "U17",
"ck_io8" : "V17",
"ck_io9" : "V18",
"ck_io10" : "T16",
"ck_io11" : "R17",
"ck_io12" : "P18",
"ck_io13" : "N17",
# Inner Digital Header
# Only for Arty Z7 20
"ck_io26" : "U5",
"ck_io27" : "V5",
"ck_io28" : "V6",
"ck_io29" : "U7",
"ck_io30" : "V7",
"ck_io31" : "U8",
"ck_io32" : "V8",
"ck_io33" : "V10",
"ck_io34" : "W10",
"ck_io35" : "W6",
"ck_io36" : "Y6",
"ck_io37" : "Y7",
"ck_io38" : "W8",
"ck_io39" : "Y8",
"ck_io40" : "W9",
"ck_io41" : "Y9",
# Outer Analog Header as Digital IO
# Only for Arty Z7 20
"ck_a0" : "Y11",
"ck_a1" : "Y12",
"ck_a2" : "W11",
"ck_a3" : "V11",
"ck_a4" : "T5",
"ck_a5" : "U10",
# Inner Analog Header as Digital IO
"ck_a6" : "F19",
"ck_a7" : "F20",
"ck_a8" : "C20",
"ck_a9" : "B20",
"ck_a10" : "B19",
"ck_a11" : "A20",
}),
("XADC", {
# Outer Analog Header
"vaux1_p" : "E17",
"vaux1_n" : "B18",
"vaux9_p" : "E18",
"vaux9_n" : "E19",
"vaux6_p" : "K14",
"vaux6_n" : "J14",
"vaux15_p" : "K16",
"vaux15_n" : "J16",
"vaux5_p" : "J20",
"vaux5_n" : "H20",
"vaux13_p" : "G19",
"vaux13_n" : "G20",
# Inner Analog Header
"vaux12_p" : "F19",
"vaux12_n" : "F20",
"vaux0_p" : "C20",
"vaux0_n" : "B20",
"vaux8_p" : "B19",
"vaux8_n" : "A19",
})
]
# Platform -----------------------------------------------------------------------------------------
class Platform(XilinxPlatform):
default_clk_name = "clk125"
default_clk_freq = 125e6
def __init__(self, variant="z7-20"):
device = {
"z7-10": "xc7z010clg400-1",
"z7-20": "xc7z020clg400-1"
}[variant]
self.board = {
"z7-10": "arty_z7_10",
"z7-20": "arty_z7_20"
}[variant]
XilinxPlatform.__init__(self, device, _io, _connectors,
toolchain="vivado")
self.default_clk_period = 1e9 / self.default_clk_freq
def create_programmer(self):
return OpenFPGALoader(self.board)
def do_finalize(self, fragment):
XilinxPlatform.do_finalize(self, fragment)
self.add_period_constraint(self.lookup_request(self.default_clk_name, loose=True),
self.default_clk_period)