163 lines
5.3 KiB
Python
163 lines
5.3 KiB
Python
#
|
|
# This file is part of LiteX-Boards.
|
|
#
|
|
# Copyright (c) 2021 Hans Baier <hansfbaier@gmail.com>
|
|
# SPDX-License-Identifier: BSD-2-Clause
|
|
|
|
from litex.build.generic_platform import *
|
|
from litex.build.altera import AlteraPlatform
|
|
from litex.build.altera.programmer import USBBlaster
|
|
|
|
# IOs ----------------------------------------------------------------------------------------------
|
|
|
|
_io = [
|
|
# Clk
|
|
("clk50", 0, Pins("E1"), IOStandard("3.3-V LVTTL")),
|
|
|
|
# Button
|
|
("key", 0, Pins("F3"), IOStandard("3.3-V LVTTL")),
|
|
("key", 1, Pins("J6"), IOStandard("3.3-V LVTTL")),
|
|
|
|
# SPIFlash (W25Q64)
|
|
("spiflash", 0,
|
|
# clk
|
|
Subsignal("cs_n", Pins("D2")),
|
|
Subsignal("clk", Pins("H1")),
|
|
Subsignal("mosi", Pins("C1")),
|
|
Subsignal("miso", Pins("H2")),
|
|
IOStandard("3.3-V LVTTL"),
|
|
),
|
|
|
|
# SDR SDRAM
|
|
("sdram_clock", 0, Pins("Y6"), IOStandard("3.3-V LVTTL")),
|
|
("sdram", 0,
|
|
Subsignal("a", Pins(
|
|
"R7 T7 R8 T8 R6 T5 R5 T4",
|
|
"R4 T3 T6 R3 T2")),
|
|
Subsignal("ba", Pins("N8 L8")),
|
|
Subsignal("cs_n", Pins("P8")),
|
|
Subsignal("cke", Pins("R1")),
|
|
Subsignal("ras_n", Pins("M8")),
|
|
Subsignal("cas_n", Pins("M7")),
|
|
Subsignal("we_n", Pins("P6")),
|
|
Subsignal("dq", Pins(
|
|
"K5 L3 L4 K6 N3 M6 P3 N5",
|
|
"N2 N1 L1 L2 K1 K2 J1 J2")),
|
|
Subsignal("dm", Pins("N6 P1")),
|
|
IOStandard("3.3-V LVTTL")
|
|
),
|
|
]
|
|
|
|
# The connectors are named after the daughterboard, not the core board
|
|
# because on the different core boards the names vary, but on the
|
|
# daughterboard they stay the same, which we need to connect the
|
|
# daughterboard peripherals to the core board.
|
|
# On this board J2 is U7 and J3 is U8
|
|
_connectors = [
|
|
("J2", {
|
|
# odd row even row
|
|
7: "G1", 8: "G2",
|
|
9: "D1", 10: "C2",
|
|
11: "B1", 12: "F5",
|
|
13: "D3", 14: "C3",
|
|
15: "B3", 16: "A3",
|
|
17: "B4", 18: "A4",
|
|
19: "E5", 20: "A2",
|
|
21: "D4", 22: "E6",
|
|
23: "C6", 24: "D6",
|
|
25: "B5", 26: "A5",
|
|
27: "B6", 28: "A6",
|
|
29: "B7", 30: "A7",
|
|
31: "D8", 32: "C8",
|
|
33: "D9", 34: "C9",
|
|
35: "B8", 36: "A8",
|
|
37: "B9", 38: "A9",
|
|
39: "E9", 40: "E8",
|
|
41: "E11", 42: "E10",
|
|
43: "A10", 44: "B10",
|
|
45: "D12", 46: "D11",
|
|
47: "B11", 48: "A11",
|
|
49: "B12", 50: "A12",
|
|
51: "B13", 52: "A13",
|
|
53: "B14", 54: "A14",
|
|
55: "D14", 56: "C14",
|
|
57: "B16", 58: "A15",
|
|
59: "C16", 60: "C15",
|
|
}),
|
|
("J3", {
|
|
# odd row even row
|
|
7: "R9", 8: "T9",
|
|
9: "R10", 10: "T10",
|
|
11: "R11", 12: "T11",
|
|
13: "R12", 14: "T12",
|
|
15: "N9", 16: "M9",
|
|
17: "M10", 18: "P9",
|
|
19: "P11", 20: "N11",
|
|
21: "R13", 22: "T13",
|
|
23: "T15", 24: "T14",
|
|
25: "N12", 26: "M11",
|
|
27: "R14", 28: "N13",
|
|
29: "N14", 30: "P14",
|
|
31: "P16", 32: "R16",
|
|
33: "N16", 34: "N15",
|
|
35: "M16", 36: "M15",
|
|
37: "L16", 38: "L15",
|
|
39: "P15", 40: "M12",
|
|
41: "L14", 42: "L13",
|
|
43: "K16", 44: "K15",
|
|
45: "K12", 46: "J12",
|
|
47: "J14", 48: "J13",
|
|
49: "K11", 50: "J11",
|
|
51: "G11", 52: "F11",
|
|
53: "F13", 54: "F14",
|
|
55: "F10", 56: "F9",
|
|
57: "E16", 58: "E15",
|
|
59: "D16", 60: "D15",
|
|
})
|
|
]
|
|
|
|
# Platform -----------------------------------------------------------------------------------------
|
|
|
|
class Platform(AlteraPlatform):
|
|
default_clk_name = "clk50"
|
|
default_clk_period = 1e9/50e6
|
|
core_resources = [
|
|
("user_led", 0, Pins("L9"), IOStandard("3.3-V LVTTL")),
|
|
("serial", 0,
|
|
# Compatible with cheap FT232 based cables (ex: Gaoominy 6Pin Ftdi Ft232Rl Ft232)
|
|
Subsignal("tx", Pins("J3:7"), IOStandard("3.3-V LVTTL")), # GPIO_07 (JP1 Pin 10)
|
|
Subsignal("rx", Pins("J3:8"), IOStandard("3.3-V LVTTL")) # GPIO_05 (JP1 Pin 8)
|
|
),
|
|
]
|
|
|
|
def __init__(self, with_daughterboard=False):
|
|
device = "10CL006YU256C8G"
|
|
io = _io
|
|
connectors = _connectors
|
|
|
|
if with_daughterboard:
|
|
from litex_boards.platforms.qmtech_daughterboard import QMTechDaughterboard
|
|
daughterboard = QMTechDaughterboard(IOStandard("3.3-V LVTTL"))
|
|
io += daughterboard.io
|
|
connectors += daughterboard.connectors
|
|
else:
|
|
io += self.core_resources
|
|
|
|
AlteraPlatform.__init__(self, device, io, connectors)
|
|
|
|
if with_daughterboard:
|
|
# an ethernet pin takes K22, so make it available
|
|
self.add_platform_command("set_global_assignment -name CYCLONEII_RESERVE_NCEO_AFTER_CONFIGURATION \"USE AS REGULAR IO\"")
|
|
|
|
# Generate PLL clock in STA
|
|
self.toolchain.additional_sdc_commands.append("derive_pll_clocks")
|
|
# Calculates clock uncertainties
|
|
self.toolchain.additional_sdc_commands.append("derive_clock_uncertainty")
|
|
|
|
def create_programmer(self):
|
|
return USBBlaster()
|
|
|
|
def do_finalize(self, fragment):
|
|
AlteraPlatform.do_finalize(self, fragment)
|
|
self.add_period_constraint(self.lookup_request("clk50", loose=True), 1e9/50e6)
|