# # This file is part of LiteX-Boards. # # Copyright (c) 2023 Kazumoto Kojima # Copyright (c) 2023 Hans Baier # # SPDX-License-Identifier: BSD-2-Clause from litex.build.generic_platform import Pins, Subsignal, IOStandard, Misc from litex.build.xilinx import XilinxPlatform from litex.build.openocd import OpenOCD # IOs ---------------------------------------------------------------------------------------------- _io = [ # Clk / Rst ("clk50", 0, Pins("F22"), IOStandard("LVCMOS33")), # Buttons ("user_btn_n", 0, Pins("AF9"), IOStandard("LVCMOS33")), ("user_btn_n", 1, Pins("AF10"), IOStandard("LVCMOS33")), # The core board does not have a USB serial on it, # so you will have to attach an USB to serial adapter # on these pins ("gpio_serial", 0, Subsignal("tx", Pins("J2:7")), Subsignal("rx", Pins("J2:8")), IOStandard("LVCMOS33") ), # SPIFlash # S25FL256L ("spiflash4x", 0, # clock needs to be accessed through STARTUPE2 Subsignal("cs_n", Pins("C23")), Subsignal("clk", Pins("C8")), Subsignal("dq", Pins("B24", "A25", "B22", "A22")), IOStandard("LVCMOS33") ), # DDR3 SDRAM # MT41J128M16JT-125K ("ddram", 0, Subsignal("a", Pins("AF5 AF2 AD6 AC6 AD4 AB6 AE2 Y5 AA4 AE6 AE3 AD5 AB4 Y6"), IOStandard("SSTL15")), Subsignal("ba", Pins("AD3 AE1 AE5"), IOStandard("SSTL15")), Subsignal("ras_n", Pins("AC3"), IOStandard("SSTL15")), Subsignal("cas_n", Pins("AC4"), IOStandard("SSTL15")), Subsignal("we_n", Pins("AF4"), IOStandard("SSTL15")), #Subsignal("cs_n", Pins("--"), IOStandard("SSTL15")), Subsignal("dm", Pins("V1 V3"), IOStandard("SSTL15")), Subsignal("dq", Pins( "W1 V2 Y1 Y3 AC2 Y2 AB2 AA3", "U1 V4 U6 W3 V6 U2 U7 U5"), IOStandard("SSTL15")), # _T_DCI")), Subsignal("dqs_p", Pins("AB1 W6"), IOStandard("DIFF_SSTL15")), # _T_DCI")), Subsignal("dqs_n", Pins("AC1 W5"), IOStandard("DIFF_SSTL15")), # _T_DCI")), Subsignal("clk_p", Pins("AA5"), IOStandard("DIFF_SSTL15")), Subsignal("clk_n", Pins("AB5"), IOStandard("DIFF_SSTL15")), Subsignal("cke", Pins("AD1"), IOStandard("SSTL15")), Subsignal("odt", Pins("AF3"), IOStandard("SSTL15")), Subsignal("reset_n", Pins("W4"), IOStandard("LVCMOS15")), Misc("SLEW=FAST"), ), ] # 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 U5 and J3 is U4 _connectors = [ ("J2", { # odd row even row 7: "A8", 8: "A9", 9: "B9", 10: "C9", 11: "A10", 12: "B10", 13: "D10", 14: "E10", 15: "B11", 16: "B12", 17: "C11", 18: "C12", 19: "A12", 20: "A13", 21: "D13", 22: "D14", 23: "A14", 24: "B14", 25: "C13", 26: "C14", 27: "A15", 28: "B15", 29: "D16", 30: "D15", 31: "B16", 32: "C16", 33: "A17", 34: "B17", 35: "D18", 36: "E18", 37: "C18", 38: "C17", 39: "A19", 40: "A18", 41: "B19", 42: "C19", 43: "A20", 44: "B20", 45: "D20", 46: "D19", 47: "A24", 48: "A23", 49: "E22", 50: "E21", 51: "D24", 52: "D23", 53: "D25", 54: "E25", 55: "E26", 56: "F25", 57: "B26", 58: "B25", 59: "C26", 60: "D26", }), ("J3", { # odd row even row 7: "AD21", 8: "AE21", 9: "AE22", 10: "AF22", 11: "AE23", 12: "AF23", 13: "V21", 14: "W21", 15: "Y22", 16: "AA22", 17: "AF24", 18: "AF25", 19: "AB21", 20: "AC21", 21: "AB22", 22: "AC22", 23: "AD23", 24: "AD24", 25: "AC23", 26: "AC24", 27: "AD25", 28: "AE25", 29: "AA23", 30: "AB24", 31: "AA25", 32: "AB25", 33: "Y23", 34: "AA24", 35: "AD26", 36: "AE26", 37: "AB26", 38: "AC26", 39: "W23", 40: "W24", 41: "Y25", 42: "Y26", 43: "W25", 44: "W26", 45: "U26", 46: "V26", 47: "V23", 48: "V24", 49: "U24", 50: "U25", 51: "T22", 52: "T23", 53: "R22", 54: "R23", 55: "R25", 56: "P25", 57: "P23", 58: "N23", 59: "N26", 60: "M26", }) ] # Platform ----------------------------------------------------------------------------------------- class Platform(XilinxPlatform): default_clk_name = "clk50" default_clk_period = 1e9/50e6 core_resources_daughterboard = [ ("onboard_led_1", 0, Pins("J26"), IOStandard("LVCMOS33")), ("onboard_led_2", 0, Pins("H26"), IOStandard("LVCMOS33")), ] core_resources_standalone = [ ("user_led", 0, Pins("J26"), IOStandard("LVCMOS33")), ("user_led", 1, Pins("H26"), IOStandard("LVCMOS33")), ] def __init__(self, toolchain="vivado", with_daughterboard=False): device = "xc7k325tffg676-1" io = _io connectors = _connectors if with_daughterboard: io += self.core_resources_daughterboard from litex_boards.platforms.qmtech_daughterboard import QMTechDaughterboard daughterboard = QMTechDaughterboard(IOStandard("LVCMOS33")) io += daughterboard.io connectors += daughterboard.connectors else: io += self.core_resources_standalone XilinxPlatform.__init__(self, device, io, connectors, toolchain=toolchain) self.toolchain.bitstream_commands = \ ["set_property BITSTREAM.CONFIG.SPI_BUSWIDTH 4 [current_design]"] self.toolchain.additional_commands = \ ["write_cfgmem -force -format bin -interface spix4 -size 16 " "-loadbit \"up 0x0 {build_name}.bit\" -file {build_name}.bin"] self.add_platform_command("set_property INTERNAL_VREF 0.750 [get_iobanks 34]") self.add_platform_command("set_property INTERNAL_VREF 0.90 [get_iobanks 33]") def create_programmer(self): bscan_spi = "bscan_spi_xc7k325t.bit" return OpenOCD("openocd_xc7_ft2232.cfg", bscan_spi) def do_finalize(self, fragment): XilinxPlatform.do_finalize(self, fragment) self.add_period_constraint(self.lookup_request("clk50", loose=True), 1e9/50e6)