From 1acdb962a5d5e1d7949bceb1250d747e236f5659 Mon Sep 17 00:00:00 2001 From: Vadim Kaushan Date: Wed, 10 Jun 2020 03:07:20 +0300 Subject: [PATCH] Add 5A-75E V7.1 board --- litex_boards/platforms/colorlight_5a_75e.py | 138 ++++++++++++++++++++ 1 file changed, 138 insertions(+) create mode 100644 litex_boards/platforms/colorlight_5a_75e.py diff --git a/litex_boards/platforms/colorlight_5a_75e.py b/litex_boards/platforms/colorlight_5a_75e.py new file mode 100644 index 0000000..0bfadde --- /dev/null +++ b/litex_boards/platforms/colorlight_5a_75e.py @@ -0,0 +1,138 @@ +# This file is Copyright (c) 2020 Vadim Kaushan +# License: BSD + +# The Colorlight 5A-75E PCB and IOs have been documented by @derekmulcahy: +# https://github.com/q3k/chubby75/issues/59 + +from litex.build.generic_platform import * +from litex.build.lattice import LatticePlatform +from litex.build.lattice.programmer import OpenOCDJTAGProgrammer + +# IOs ---------------------------------------------------------------------------------------------- + +# Documented by @derekmulcahy +_io_v7_1 = [ + # clock + ("clk25", 0, Pins("P6"), IOStandard("LVCMOS33")), + + # led + ("user_led_n", 0, Pins("P11"), IOStandard("LVCMOS33")), + + # btn + ("user_btn_n", 0, Pins("M13"), IOStandard("LVCMOS33")), + + # serial + ("serial", 0, + Subsignal("tx", Pins("P11")), # led (J19 DATA_LED-) + Subsignal("rx", Pins("M13")), # btn (J19 KEY+) + IOStandard("LVCMOS33") + ), + + # spiflash (W25Q32JV) + ("spiflash", 0, + # clk + Subsignal("cs_n", Pins("N8")), + #Subsignal("clk", Pins("")), driven through USRMCLK + Subsignal("mosi", Pins("T8")), + Subsignal("miso", Pins("T7")), + IOStandard("LVCMOS33"), + ), + + # sdram (M12616161A) + ("sdram_clock", 0, Pins("C6"), IOStandard("LVCMOS33")), + ("sdram", 0, + Subsignal("a", Pins( + "A9 E10 B12 D13 C12 D11 D10 E9", + "D9 B7 C8")), + Subsignal("dq", Pins( + "B13 A11 B9 C11 C9 C10 E8 B5", + "B6 A6 A5 B4 C3 B3 B2 A2", + "E2 E4 D3 E5 A4 D4 C4 D5", + "D6 E6 D8 A8 B8 B10 B11 E11")), + Subsignal("we_n", Pins("C7")), + Subsignal("ras_n", Pins("D7")), + Subsignal("cas_n", Pins("E7")), + #Subsignal("cs_n", Pins("")), # gnd + #Subsignal("cke", Pins("")), # 3v3 + Subsignal("ba", Pins("A7")), + #Subsignal("dm", Pins("")), # gnd + IOStandard("LVCMOS33"), + Misc("SLEWRATE=FAST") + ), + + # ethernet (B50612D) + ("eth_clocks", 0, + Subsignal("tx", Pins("M2")), + Subsignal("rx", Pins("M1")), + IOStandard("LVCMOS33") + ), + ("eth", 0, + Subsignal("rst_n", Pins("P5")), + Subsignal("mdio", Pins("T2")), + Subsignal("mdc", Pins("P3")), + Subsignal("rx_ctl", Pins("N6")), + Subsignal("rx_data", Pins("N1 M5 N5 M6")), + Subsignal("tx_ctl", Pins("M3")), + Subsignal("tx_data", Pins("L1 L3 P2 L4")), + IOStandard("LVCMOS33") + ), + ("eth_clocks", 1, + Subsignal("tx", Pins("M12")), + Subsignal("rx", Pins("M16")), + IOStandard("LVCMOS33") + ), + ("eth", 1, + Subsignal("rst_n", Pins("P5")), + Subsignal("mdio", Pins("T2")), + Subsignal("mdc", Pins("P3")), + Subsignal("rx_ctl", Pins("L15")), + Subsignal("rx_data", Pins("P13 N13 P14 M15")), + Subsignal("tx_ctl", Pins("R15")), + Subsignal("tx_data", Pins("T14 R12 R13 R14")), + IOStandard("LVCMOS33") + ), +] + +# from https://github.com/q3k/chubby75/blob/master/5a-75b/hardware_V7.1.md +_connectors_v7_1 = [ + ("j1", "F3 F1 G3 - G2 H3 H5 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j2", "G4 G5 J2 - H2 J1 J3 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j3", "J4 K3 G1 - K4 C2 E3 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j4", "C1 A3 F4 - E1 F5 D1 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j5", "H4 K5 P1 - R1 L5 F2 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j6", "N3 M4 T4 - R5 R3 N4 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j7", "P4 R2 M8 - M9 T6 R6 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j8", "R8 R7 P8 - P7 N7 M7 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j9", "M11 N11 P12 - K15 N12 L16 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j10", "T13 N14 M14 - P16 T15 L14 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j11", "K16 J15 J16 - J12 H15 G16 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j12", "P15 L12 L13 - D14 R16 E16 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j13", "H13 J13 H12 - G14 H14 G15 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j14", "E14 D16 C15 - B15 C16 C14 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j15", "A15 F16 A14 - E13 B14 A13 F15 L2 K1 J5 K2 B16 J14 F12 -"), + ("j16", "G13 G12 E15 - F14 F13 C13 F15 L2 K1 J5 K2 B16 J14 F12 -"), +] + + +# Platform ----------------------------------------------------------------------------------------- + +class Platform(LatticePlatform): + default_clk_name = "clk25" + default_clk_period = 1e9/25e6 + + def __init__(self, revision="7.1"): + assert revision in ["7.1"] + self.revision = revision + device = {"7.1": "LFE5U-25F-6BG256C"}[revision] + io = {"7.1": _io_v7_1}[revision] + connectors = {"7.1": _connectors_v7_1}[revision] + LatticePlatform.__init__(self, device, io, connectors=connectors, toolchain="trellis") + + def create_programmer(self): + return OpenOCDJTAGProgrammer("openocd_colorlight_5a_75b.cfg") + + def do_finalize(self, fragment): + LatticePlatform.do_finalize(self, fragment) + self.add_period_constraint(self.lookup_request("clk25", loose=True), 1e9/25e6) + self.add_period_constraint(self.lookup_request("eth_clocks:rx", 0, loose=True), 1e9/125e6) + self.add_period_constraint(self.lookup_request("eth_clocks:rx", 1, loose=True), 1e9/125e6)