# This file is Copyright (c) 2019 Vamsi K Vytla # License: BSD from litex.build.generic_platform import * from litex.build.xilinx import XilinxPlatform, VivadoProgrammer # IOs ---------------------------------------------------------------------------------------------- _io = [ ("user_led", 0, Pins("M26"), IOStandard("LVCMOS33")), ("user_led", 1, Pins("T24"), IOStandard("LVCMOS33")), ("user_led", 2, Pins("T25"), IOStandard("LVCMOS33")), ("user_led", 3, Pins("R26"), IOStandard("LVCMOS33")), ("cpu_reset", 0, Pins("U4"), IOStandard("SSTL15")), ("clk200", 0, Subsignal("p", Pins("R3"), IOStandard("DIFF_SSTL15")), Subsignal("n", Pins("P3"), IOStandard("DIFF_SSTL15")) ), ("clk156", 0, Subsignal("p", Pins("M21"), IOStandard("LVDS_25")), Subsignal("n", Pins("M22"), IOStandard("LVDS_25")) ), ("serial", 0, Subsignal("cts", Pins("V19")), Subsignal("rts", Pins("W19")), Subsignal("tx", Pins("U19")), Subsignal("rx", Pins("T19")), IOStandard("LVCMOS18") ), ("eth_clocks", 0, Subsignal("tx", Pins("U22")), Subsignal("rx", Pins("U21")), IOStandard("LVCMOS18") ), ("eth", 0, Subsignal("rx_ctl", Pins("U14")), Subsignal("rx_data", Pins("U17 V17 V16 V14")), Subsignal("tx_ctl", Pins("T15")), Subsignal("tx_data", Pins("U16 U15 T18 T17")), Subsignal("rst_n", Pins("V18")), Subsignal("mdc", Pins("W18")), Subsignal("mdio", Pins("T14")), IOStandard("LVCMOS18"), Misc("SLEW=FAST"), Drive(16) ), ("ddram", 0, Subsignal("a", Pins( "M4 J3 J1 L4 K5 M7 K1 M6", "H1 K3 N7 L5 L7 N6 L3 K2"), IOStandard("SSTL15")), Subsignal("ba", Pins("N1 M1 H2"), IOStandard("SSTL15")), Subsignal("ras_n", Pins("P1"), IOStandard("SSTL15")), Subsignal("cas_n", Pins("T4"), IOStandard("SSTL15")), Subsignal("we_n", Pins("R1"), IOStandard("SSTL15")), Subsignal("cs_n", Pins("T3"), IOStandard("SSTL15")), Subsignal("dm", Pins("AC6 AC4 AA3 U7 G1 F3 G5 H9"), IOStandard("SSTL15")), Subsignal("dq", Pins( "AB6 AA8 Y8 AB5 AA5 Y5 Y6 Y7", "AF4 AF5 AF3 AE3 AD3 AC3 AB4 AA4", "AC2 AB2 AF2 AE2 Y1 Y2 AC1 AB1", "Y3 W3 W6 V6 W4 W5 W1 V1", "G2 D1 E1 E2 F2 A2 A3 C2", "C3 D3 A4 B4 C4 D4 D5 E5", "F4 G4 K6 K7 K8 L8 J5 J6", "G6 H6 F7 F8 G8 H8 D6 E6"), IOStandard("SSTL15")), Subsignal("dqs_p", Pins("V8 AD5 AD1 V3 C1 B5 J4 H7"), IOStandard("DIFF_SSTL15")), Subsignal("dqs_n", Pins("W8 AE5 AE1 V2 B1 A5 H4 G7"), IOStandard("DIFF_SSTL15")), Subsignal("clk_p", Pins("M2"), IOStandard("DIFF_SSTL15")), Subsignal("clk_n", Pins("L2"), IOStandard("DIFF_SSTL15")), Subsignal("cke", Pins("P4"), IOStandard("SSTL15")), Subsignal("odt", Pins("R2"), IOStandard("SSTL15")), Subsignal("reset_n", Pins("N8"), IOStandard("LVCMOS15")) ), ("pcie_x1", 0, Subsignal("rst_n", Pins("M20"), IOStandard("LVCMOS25")), Subsignal("clk_p", Pins("F11")), Subsignal("clk_n", Pins("E11")), Subsignal("rx_p", Pins("D12")), Subsignal("rx_n", Pins("C12")), Subsignal("tx_p", Pins("D10")), Subsignal("tx_n", Pins("C10")) ), ("vadj_on_b", 0, Pins("R16"), IOStandard("LVCMOS25")), ("gtp_refclk", 0, Subsignal("p", Pins("AA13")), Subsignal("n", Pins("AB13")) ), ("sfp", 0, Subsignal("txp", Pins("AC10")), Subsignal("txn", Pins("AD10")), Subsignal("rxp", Pins("AC12")), Subsignal("rxn", Pins("AD12")), ), ("sfp_mgt_clk_sel0", 0, Pins("B26"), IOStandard("LVCMOS25")), ("sfp_mgt_clk_sel1", 0, Pins("C24"), IOStandard("LVCMOS25")), ("sfp_tx_disable_n", 0, Pins("R18"), IOStandard("LVCMOS33")), ("sfp_rx_los", 0, Pins("R23"), IOStandard("LVCMOS33")), ] # Connectors --------------------------------------------------------------------------------------- _connectors = [ ("HPC", { "CLK0_M2C_N": "C19", "CLK0_M2C_P": "D19", "CLK1_M2C_N": "H22", "CLK1_M2C_P": "H21", "LA00_CC_N": "C18", "LA00_CC_P": "D18", "LA01_CC_N": "E18", "LA01_CC_P": "E17", "LA02_N": "H15", "LA02_P": "H14", "LA03_N": "F17", "LA03_P": "G17", "LA04_N": "F19", "LA04_P": "F18", "LA05_N": "F15", "LA05_P": "G15", "LA06_N": "F20", "LA06_P": "G19", "LA07_N": "G16", "LA07_P": "H16", "LA08_N": "B17", "LA08_P": "C17", "LA09_N": "D16", "LA09_P": "E16", "LA10_N": "A18", "LA10_P": "A17", "LA11_N": "A19", "LA11_P": "B19", "LA12_N": "D20", "LA12_P": "E20", "LA13_N": "A20", "LA13_P": "B20", "LA14_N": "B21", "LA14_P": "C21", "LA15_N": "A22", "LA15_P": "B22", "LA16_N": "D21", "LA16_P": "E21", "LA17_CC_N": "J21", "LA17_CC_P": "K21", "LA18_CC_N": "G21", "LA18_CC_P": "G20", "LA19_N": "L14", "LA19_P": "M14", "LA20_N": "M17", "LA20_P": "M16", "LA21_N": "H19", "LA21_P": "J19", "LA22_N": "L18", "LA22_P": "L17", "LA23_N": "J20", "LA23_P": "K20", "LA24_N": "H18", "LA24_P": "J18", "LA25_N": "F22", "LA25_P": "G22", "LA26_N": "H24", "LA26_P": "J24", "LA27_N": "E23", "LA27_P": "F23", "LA28_N": "K23", "LA28_P": "K22", "LA29_N": "F24", "LA29_P": "G24", "LA30_N": "D25", "LA30_P": "E25", "LA31_N": "D26", "LA31_P": "E26", "LA32_N": "G26", "LA32_P": "H26", "LA33_N": "F25", "LA33_P": "G25", "PRSNT_M2C_L": "N16", "PWR_GOOD_FLASH_RST_B": "P15"} ), ("XADC", { "GPIO0": "H17", "GPIO1": "E22", "GPIO2": "K18", "GPIO3": "L19", "VAUX0_N": "J16", "VAUX0_P": "K15", "VAUX8_N": "J15", "VAUX8_P": "J14", } ), ] # Platform ----------------------------------------------------------------------------------------- class Platform(XilinxPlatform): default_clk_name = "clk156" default_clk_period = 1e9/156.5e6 def __init__(self): XilinxPlatform.__init__(self, "xc7a200t-fbg676-2", _io, _connectors, toolchain="vivado") 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"] def create_programmer(self): return VivadoProgrammer() def do_finalize(self, fragment): XilinxPlatform.do_finalize(self, fragment) try: self.add_period_constraint(self.lookup_request("clk200").p, 1e9/200e6) except ConstraintError: pass try: self.add_period_constraint(self.lookup_request("eth_clocks").rx, 1e9/125e6) except ConstraintError: pass try: self.add_period_constraint(self.lookup_request("eth_clocks").tx, 1e9/125e6) except ConstraintError: pass