# This file is Copyright (c) 2019 Florent Kermarrec # License: BSD from litex.build.generic_platform import * from litex.build.xilinx import XilinxPlatform from litex.build.openocd import OpenOCD # IOs ---------------------------------------------------------------------------------------------- _io = [ # clock ("clk50", 0, Pins("J19"), IOStandard("LVCMOS33")), # leds ("user_led", 0, Pins("M21"), IOStandard("LVCMOS33")), ("user_led", 1, Pins("N20"), IOStandard("LVCMOS33")), ("user_led", 2, Pins("L21"), IOStandard("LVCMOS33")), ("user_led", 3, Pins("AA21"), IOStandard("LVCMOS33")), ("user_led", 4, Pins("R19"), IOStandard("LVCMOS33")), ("user_led", 5, Pins("M16"), IOStandard("LVCMOS33")), # spiflash ("flash", 0, Subsignal("cs_n", Pins("T19")), Subsignal("mosi", Pins("P22")), Subsignal("miso", Pins("R22")), Subsignal("vpp", Pins("P21")), Subsignal("hold", Pins("R21")), IOStandard("LVCMOS33") ), # spiflash4x ("spiflash4x", 0, Subsignal("cs_n", Pins("T19")), Subsignal("dq", Pins("P22 R22 P21 R21")), IOStandard("LVCMOS33") ), # serial ("serial", 0, Subsignal("tx", Pins("E14")), Subsignal("rx", Pins("E13")), IOStandard("LVCMOS33"), ), # dram ("ddram", 0, Subsignal("a", Pins( "U6 V4 W5 V5 AA1 Y2 AB1 AB3", "AB2 Y3 W6 Y1 V2 AA3"), IOStandard("SSTL15_R")), Subsignal("ba", Pins("U5 W4 V7"), IOStandard("SSTL15_R")), Subsignal("ras_n", Pins("Y9"), IOStandard("SSTL15_R")), Subsignal("cas_n", Pins("Y7"), IOStandard("SSTL15_R")), Subsignal("we_n", Pins("V8"), IOStandard("SSTL15_R")), Subsignal("dm", Pins("G1 H4 M5 L3"), IOStandard("SSTL15_R")), Subsignal("dq", Pins( "C2 F1 B1 F3 A1 D2 B2 E2", "J5 H3 K1 H2 J1 G2 H5 G3", "N2 M6 P1 N5 P2 N4 R1 P6", "K3 M2 K4 M3 J6 L5 J4 K6"), IOStandard("SSTL15_R"), Misc("IN_TERM=UNTUNED_SPLIT_40")), Subsignal("dqs_p", Pins("E1 K2 P5 M1"), IOStandard("DIFF_SSTL15_R")), Subsignal("dqs_n", Pins("D1 J2 P4 L1"), IOStandard("DIFF_SSTL15_R")), Subsignal("clk_p", Pins("R3"), IOStandard("DIFF_SSTL15_R")), Subsignal("clk_n", Pins("R2"), IOStandard("DIFF_SSTL15_R")), Subsignal("cke", Pins("Y8"), IOStandard("SSTL15_R")), Subsignal("odt", Pins("W9"), IOStandard("SSTL15_R")), Subsignal("reset_n", Pins("AB5"), IOStandard("LVCMOS15")), Subsignal("cs_n", Pins("V9"), IOStandard("SSTL15_R")), Misc("SLEW=FAST"), ), # pcie ("pcie_x1", 0, Subsignal("rst_n", Pins("E18"), IOStandard("LVCMOS33")), Subsignal("clk_p", Pins("F10")), Subsignal("clk_n", Pins("E10")), Subsignal("rx_p", Pins("D11")), Subsignal("rx_n", Pins("C11")), Subsignal("tx_p", Pins("D5")), Subsignal("tx_n", Pins("C5")) ), ("pcie_x2", 0, Subsignal("rst_n", Pins("E18"), IOStandard("LVCMOS33")), Subsignal("clk_p", Pins("F10")), Subsignal("clk_n", Pins("E10")), Subsignal("rx_p", Pins("D11 B10")), Subsignal("rx_n", Pins("C11 A10")), Subsignal("tx_p", Pins("D5 B6")), Subsignal("tx_n", Pins("C5 A6")) ), ("pcie_x4", 0, Subsignal("rst_n", Pins("E18"), IOStandard("LVCMOS33")), Subsignal("clk_p", Pins("F10")), Subsignal("clk_n", Pins("E10")), Subsignal("rx_p", Pins("D11 B10 D9 B8")), Subsignal("rx_n", Pins("C11 A10 C9 A8")), Subsignal("tx_p", Pins("D5 B6 D7 B4")), Subsignal("tx_n", Pins("C5 A6 C7 A4")) ), # ethernet ("eth_clocks", 0, Subsignal("ref_clk", Pins("D17")), IOStandard("LVCMOS33"), ), ("eth", 0, Subsignal("rst_n", Pins("F16")), Subsignal("rx_data", Pins("A20 B18")), Subsignal("crs_dv", Pins("C20")), Subsignal("tx_en", Pins("A19")), Subsignal("tx_data", Pins("C18 C19")), Subsignal("mdc", Pins("F14")), Subsignal("mdio", Pins("F13")), Subsignal("rx_er", Pins("B20")), Subsignal("int_n", Pins("D21")), IOStandard("LVCMOS33") ), # sdcard ("sdcard", 0, Subsignal("data", Pins("L15 L16 K14 M13"), Misc("PULLUP True")), Subsignal("cmd", Pins("L13"), Misc("PULLUP True")), Subsignal("clk", Pins("K18")), IOStandard("LVCMOS33"), Misc("SLEW=FAST") ), # hdmi in ("hdmi_in", 0, Subsignal("clk_p", Pins("L19"), IOStandard("TMDS_33"), Inverted()), Subsignal("clk_n", Pins("L20"), IOStandard("TMDS_33"), Inverted()), Subsignal("data0_p", Pins("K21"), IOStandard("TMDS_33"), Inverted()), Subsignal("data0_n", Pins("K22"), IOStandard("TMDS_33"), Inverted()), Subsignal("data1_p", Pins("J20"), IOStandard("TMDS_33"), Inverted()), Subsignal("data1_n", Pins("J21"), IOStandard("TMDS_33"), Inverted()), Subsignal("data2_p", Pins("J22"), IOStandard("TMDS_33"), Inverted()), Subsignal("data2_n", Pins("H22"), IOStandard("TMDS_33"), Inverted()), Subsignal("scl", Pins("T18"), IOStandard("LVCMOS33")), Subsignal("sda", Pins("V18"), IOStandard("LVCMOS33")), ), ("hdmi_in", 1, Subsignal("clk_p", Pins("Y18"), IOStandard("TMDS_33"), Inverted()), Subsignal("clk_n", Pins("Y19"), IOStandard("TMDS_33"), Inverted()), Subsignal("data0_p", Pins("AA18"), IOStandard("TMDS_33")), Subsignal("data0_n", Pins("AB18"), IOStandard("TMDS_33")), Subsignal("data1_p", Pins("AA19"), IOStandard("TMDS_33"), Inverted()), Subsignal("data1_n", Pins("AB20"), IOStandard("TMDS_33"), Inverted()), Subsignal("data2_p", Pins("AB21"), IOStandard("TMDS_33"), Inverted()), Subsignal("data2_n", Pins("AB22"), IOStandard("TMDS_33"), Inverted()), Subsignal("scl", Pins("W17"), IOStandard("LVCMOS33"), Inverted()), Subsignal("sda", Pins("R17"), IOStandard("LVCMOS33")), ), # hdmi out ("hdmi_out", 0, Subsignal("clk_p", Pins("W19"), IOStandard("TMDS_33"), Inverted()), Subsignal("clk_n", Pins("W20"), IOStandard("TMDS_33"), Inverted()), Subsignal("data0_p", Pins("W21"), IOStandard("TMDS_33")), Subsignal("data0_n", Pins("W22"), IOStandard("TMDS_33")), Subsignal("data1_p", Pins("U20"), IOStandard("TMDS_33")), Subsignal("data1_n", Pins("V20"), IOStandard("TMDS_33")), Subsignal("data2_p", Pins("T21"), IOStandard("TMDS_33")), Subsignal("data2_n", Pins("U21"), IOStandard("TMDS_33")) ), ("hdmi_out", 1, Subsignal("clk_p", Pins("G21"), IOStandard("TMDS_33"), Inverted()), Subsignal("clk_n", Pins("G22"), IOStandard("TMDS_33"), Inverted()), Subsignal("data0_p", Pins("E22"), IOStandard("TMDS_33"), Inverted()), Subsignal("data0_n", Pins("D22"), IOStandard("TMDS_33"), Inverted()), Subsignal("data1_p", Pins("C22"), IOStandard("TMDS_33"), Inverted()), Subsignal("data1_n", Pins("B22"), IOStandard("TMDS_33"), Inverted()), Subsignal("data2_p", Pins("B21"), IOStandard("TMDS_33"), Inverted()), Subsignal("data2_n", Pins("A21"), IOStandard("TMDS_33"), Inverted()), ), ] # Platform ----------------------------------------------------------------------------------------- class Platform(XilinxPlatform): default_clk_name = "clk50" default_clk_period = 1e9/50e6 def __init__(self, device="xc7a35t"): assert device in ["xc7a35t", "xc7a100t"] XilinxPlatform.__init__(self, device + "-fgg484-2", _io, toolchain="vivado") def create_programmer(self): bscan_spi = "bscan_spi_xc7a100t.bit" if "xc7a100t" in self.device else "bscan_spi_xc7a35t.bit" return OpenOCD("openocd_netv2_rpi.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) self.add_period_constraint(self.lookup_request("eth_clocks:ref_clk", loose=True), 1e9/50e6)