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@@ -1,351 +0,0 @@
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package chipyard.fpga.arty
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import chisel3._
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import chisel3.experimental.{attach, IO}
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import freechips.rocketchip.util._
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import freechips.rocketchip.devices.debug._
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import freechips.rocketchip.subsystem.{NExtTopInterrupts}
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import sifive.blocks.devices.gpio._
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import sifive.blocks.devices.uart._
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import sifive.blocks.devices.spi._
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import sifive.blocks.devices.pwm._
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import sifive.blocks.devices.i2c._
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import sifive.blocks.devices.jtag._
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import sifive.blocks.devices.pinctrl._
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import sifive.fpgashells.shell.xilinx.artyshell.{ArtyShell}
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import sifive.fpgashells.ip.xilinx.{IBUFG, IOBUF, PULLUP, PowerOnResetFPGAOnly}
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import chipsalliance.rocketchip.config._
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import chipyard.iobinders.{OverrideIOBinder, GetSystemParameters}
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import chipyard.{HasHarnessSignalReferences}
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class WithE300Connections extends OverrideIOBinder({
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(system: HasPeripheryGPIOModuleImp
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with HasPeripheryUARTModuleImp
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with HasPeripherySPIModuleImp
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with HasPeripheryDebugModuleImp
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with HasPeripheryPWMModuleImp
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with HasPeripherySPIFlashModuleImp
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with HasPeripheryI2CModuleImp) => {
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implicit val p: Parameters = GetSystemParameters(system)
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// E300DigitalTop <-> ChipTop connections
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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object PinGen {
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def apply(): BasePin = {
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val pin = new BasePin()
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pin
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}
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}
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val io_jtag = IO(new JTAGPins(() => PinGen(), false)).suggestName("jtag")
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val io_gpio = IO(new GPIOPins(() => PinGen(), p(PeripheryGPIOKey)(0))).suggestName("gpio")
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val io_qspi = IO(new SPIPins(() => PinGen(), p(PeripherySPIFlashKey)(0))).suggestName("qspi")
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val io_jtag_reset = IO(Input(Bool())).suggestName("jtag_reset")
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val io_ndreset = IO(Output(Bool())).suggestName("ndreset")
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val io_async_corerst = IO(Input(Bool())).suggestName("core_reset")
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system.reset := ResetCatchAndSync(system.clock, io_async_corerst, 20)
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Debug.connectDebugClockAndReset(system.debug, system.clock)
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//-----------------------------------------------------------------------
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// Check for unsupported rocket-chip connections
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//-----------------------------------------------------------------------
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require (p(NExtTopInterrupts) == 0, "No Top-level interrupts supported");
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//-----------------------------------------------------------------------
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// Build GPIO Pin Mux
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//-----------------------------------------------------------------------
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// Pin Mux for UART, SPI, PWM
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// First convert the System outputs into "IOF" using the respective *GPIOPort
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// converters.
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val sys_uart = system.uart
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val sys_pwm = system.pwm
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val sys_spi = system.spi
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val sys_i2c = system.i2c
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val uart_pins = p(PeripheryUARTKey).map { c => Wire(new UARTPins(() => PinGen()))}
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val pwm_pins = p(PeripheryPWMKey).map { c => Wire(new PWMPins(() => PinGen(), c))}
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val spi_pins = p(PeripherySPIKey).map { c => Wire(new SPIPins(() => PinGen(), c))}
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val i2c_pins = p(PeripheryI2CKey).map { c => Wire(new I2CPins(() => PinGen()))}
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(uart_pins zip sys_uart) map {case (p, r) => UARTPinsFromPort(p, r, clock = system.clock, reset = system.reset.asBool, syncStages = 0)}
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(pwm_pins zip sys_pwm) map {case (p, r) => PWMPinsFromPort(p, r) }
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(spi_pins zip sys_spi) map {case (p, r) => SPIPinsFromPort(p, r, clock = system.clock, reset = system.reset.asBool, syncStages = 0)}
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(i2c_pins zip sys_i2c) map {case (p, r) => I2CPinsFromPort(p, r, clock = system.clock, reset = system.reset.asBool, syncStages = 0)}
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//-----------------------------------------------------------------------
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// Default Pin connections before attaching pinmux
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for (iof_0 <- system.gpio(0).iof_0.get) {
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iof_0.default()
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}
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for (iof_1 <- system.gpio(0).iof_1.get) {
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iof_1.default()
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}
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//-----------------------------------------------------------------------
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val iof_0 = system.gpio(0).iof_0.get
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val iof_1 = system.gpio(0).iof_1.get
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// SPI1 (0 is the dedicated)
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BasePinToIOF(spi_pins(0).cs(0), iof_0(2))
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BasePinToIOF(spi_pins(0).dq(0), iof_0(3))
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BasePinToIOF(spi_pins(0).dq(1), iof_0(4))
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BasePinToIOF(spi_pins(0).sck, iof_0(5))
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BasePinToIOF(spi_pins(0).dq(2), iof_0(6))
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BasePinToIOF(spi_pins(0).dq(3), iof_0(7))
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BasePinToIOF(spi_pins(0).cs(1), iof_0(8))
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BasePinToIOF(spi_pins(0).cs(2), iof_0(9))
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BasePinToIOF(spi_pins(0).cs(3), iof_0(10))
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// SPI2
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BasePinToIOF(spi_pins(1).cs(0), iof_0(26))
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BasePinToIOF(spi_pins(1).dq(0), iof_0(27))
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BasePinToIOF(spi_pins(1).dq(1), iof_0(28))
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BasePinToIOF(spi_pins(1).sck, iof_0(29))
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BasePinToIOF(spi_pins(1).dq(2), iof_0(30))
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BasePinToIOF(spi_pins(1).dq(3), iof_0(31))
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// I2C
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if (p(PeripheryI2CKey).length == 1) {
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BasePinToIOF(i2c_pins(0).sda, iof_0(12))
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BasePinToIOF(i2c_pins(0).scl, iof_0(13))
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}
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// UART0
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BasePinToIOF(uart_pins(0).rxd, iof_0(16))
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BasePinToIOF(uart_pins(0).txd, iof_0(17))
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// UART1
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BasePinToIOF(uart_pins(1).rxd, iof_0(24))
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BasePinToIOF(uart_pins(1).txd, iof_0(25))
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//PWM
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BasePinToIOF(pwm_pins(0).pwm(0), iof_1(0) )
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BasePinToIOF(pwm_pins(0).pwm(1), iof_1(1) )
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BasePinToIOF(pwm_pins(0).pwm(2), iof_1(2) )
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BasePinToIOF(pwm_pins(0).pwm(3), iof_1(3) )
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BasePinToIOF(pwm_pins(1).pwm(1), iof_1(19))
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BasePinToIOF(pwm_pins(1).pwm(0), iof_1(20))
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BasePinToIOF(pwm_pins(1).pwm(2), iof_1(21))
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BasePinToIOF(pwm_pins(1).pwm(3), iof_1(22))
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BasePinToIOF(pwm_pins(2).pwm(0), iof_1(10))
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BasePinToIOF(pwm_pins(2).pwm(1), iof_1(11))
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BasePinToIOF(pwm_pins(2).pwm(2), iof_1(12))
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BasePinToIOF(pwm_pins(2).pwm(3), iof_1(13))
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//-----------------------------------------------------------------------
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// Drive actual Pads
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//-----------------------------------------------------------------------
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// Result of Pin Mux
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GPIOPinsFromPort(io_gpio, system.gpio(0))
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// Dedicated SPI Pads
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SPIPinsFromPort(io_qspi, system.qspi(0), clock = system.clock, reset = system.reset.asBool, syncStages = 3)
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// JTAG Debug Interface
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val sjtag = system.debug.get.systemjtag.get
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JTAGPinsFromPort(io_jtag, sjtag.jtag)
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sjtag.reset := io_jtag_reset
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sjtag.mfr_id := p(JtagDTMKey).idcodeManufId.U(11.W)
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io_ndreset := system.debug.get.ndreset
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// AON Pads -- direct connection is OK because
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// EnhancedPin is hard-coded in MockAONPads
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// and thus there is no .fromPort method.
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// Harness Function (ArtyHarness <-> ChipTop)
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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val harnessFn = (baseTh: HasHarnessSignalReferences) => {
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baseTh match { case th: ArtyShell =>
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io_async_corerst := th.reset_core
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//-----------------------------------------------------------------------
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// Clock divider
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//-----------------------------------------------------------------------
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val slow_clock = Wire(Bool())
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// Divide clock by 256, used to generate 32.768 kHz clock for AON block
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withClockAndReset(th.clock_8MHz, ~th.mmcm_locked) {
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val clockToggleReg = RegInit(false.B)
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val (_, slowTick) = chisel3.util.Counter(true.B, 256)
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when (slowTick) {clockToggleReg := ~clockToggleReg}
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slow_clock := clockToggleReg
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}
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//-----------------------------------------------------------------------
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// DUT
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//-----------------------------------------------------------------------
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withClockAndReset(th.clock_32MHz, th.ck_rst) {
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//---------------------------------------------------------------------
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// SPI flash IOBUFs
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//---------------------------------------------------------------------
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IOBUF(th.qspi_sck, io_qspi.sck)
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IOBUF(th.qspi_cs, io_qspi.cs(0))
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IOBUF(th.qspi_dq(0), io_qspi.dq(0))
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IOBUF(th.qspi_dq(1), io_qspi.dq(1))
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IOBUF(th.qspi_dq(2), io_qspi.dq(2))
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IOBUF(th.qspi_dq(3), io_qspi.dq(3))
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//---------------------------------------------------------------------
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// JTAG IOBUFs
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//---------------------------------------------------------------------
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io_jtag.TCK.i.ival := IBUFG(IOBUF(th.jd_2).asClock).asUInt
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IOBUF(th.jd_5, io_jtag.TMS)
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PULLUP(th.jd_5)
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IOBUF(th.jd_4, io_jtag.TDI)
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PULLUP(th.jd_4)
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IOBUF(th.jd_0, io_jtag.TDO)
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// mimic putting a pullup on this line (part of reset vote)
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th.SRST_n := IOBUF(th.jd_6)
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PULLUP(th.jd_6)
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// jtag reset
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val jtag_power_on_reset = PowerOnResetFPGAOnly(th.clock_32MHz)
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io_jtag_reset := jtag_power_on_reset
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// debug reset
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th.dut_ndreset := io_ndreset
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//---------------------------------------------------------------------
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// Assignment to package pins
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//---------------------------------------------------------------------
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// Pins IO0-IO13
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//
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// FTDI UART TX/RX are not connected to th.ck_io[0,1]
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// the way they are on Arduino boards. We copy outgoing
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// data to both places, switch 3 (sw[3]) determines whether
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// input to UART comes from FTDI chip or gpio_16 (shield pin PD0)
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val iobuf_ck0 = Module(new IOBUF())
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iobuf_ck0.io.I := io_gpio.pins(16).o.oval
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iobuf_ck0.io.T := ~io_gpio.pins(16).o.oe
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attach(iobuf_ck0.io.IO, th.ck_io(0)) // UART0 RX
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val iobuf_uart_txd = Module(new IOBUF())
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iobuf_uart_txd.io.I := io_gpio.pins(16).o.oval
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iobuf_uart_txd.io.T := ~io_gpio.pins(16).o.oe
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attach(iobuf_uart_txd.io.IO, th.uart_txd_in)
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// gpio(16) input is shared between FTDI TX pin and the Arduino shield pin using SW[3]
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val sw_3_in = IOBUF(th.sw_3)
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io_gpio.pins(16).i.ival := Mux(sw_3_in,
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iobuf_ck0.io.O & io_gpio.pins(16).o.ie,
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iobuf_uart_txd.io.O & io_gpio.pins(16).o.ie)
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IOBUF(th.uart_rxd_out, io_gpio.pins(17))
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// Shield header row 0: PD2-PD7
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IOBUF(th.ck_io(2), io_gpio.pins(18))
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IOBUF(th.ck_io(3), io_gpio.pins(19)) // PWM1(1)
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IOBUF(th.ck_io(4), io_gpio.pins(20)) // PWM1(0)
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IOBUF(th.ck_io(5), io_gpio.pins(21)) // PWM1(2)
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IOBUF(th.ck_io(6), io_gpio.pins(22)) // PWM1(3)
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IOBUF(th.ck_io(7), io_gpio.pins(23))
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// Header row 1: PB0-PB5
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IOBUF(th.ck_io(8), io_gpio.pins(0)) // PWM0(0)
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IOBUF(th.ck_io(9), io_gpio.pins(1)) // PWM0(1)
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IOBUF(th.ck_io(10), io_gpio.pins(2)) // SPI CS(0) / PWM0(2)
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IOBUF(th.ck_io(11), io_gpio.pins(3)) // SPI MOSI / PWM0(3)
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IOBUF(th.ck_io(12), io_gpio.pins(4)) // SPI MISO
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IOBUF(th.ck_io(13), io_gpio.pins(5)) // SPI SCK
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io_gpio.pins(6).i.ival := 0.U
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io_gpio.pins(7).i.ival := 0.U
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|
|
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|
io_gpio.pins(8).i.ival := 0.U
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|
|
|
|
|
|
|
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// Header row 3: A0-A5 (we don't support using them as analog inputs)
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|
|
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|
// just treat them as regular digital GPIOs
|
|
|
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IOBUF(th.ck_io(15), io_gpio.pins(9)) // A1 = CS(2)
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|
|
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|
IOBUF(th.ck_io(16), io_gpio.pins(10)) // A2 = CS(3) / PWM2(0)
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|
|
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IOBUF(th.ck_io(17), io_gpio.pins(11)) // A3 = PWM2(1)
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|
|
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IOBUF(th.ck_io(18), io_gpio.pins(12)) // A4 = PWM2(2) / SDA
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|
|
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IOBUF(th.ck_io(19), io_gpio.pins(13)) // A5 = PWM2(3) / SCL
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|
|
|
|
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|
|
|
// Mirror outputs of GPIOs with PWM peripherals to RGB LEDs on Arty
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|
|
|
|
// assign RGB LED0 R,G,B inputs = PWM0(1,2,3) when iof_1 is active
|
|
|
|
|
IOBUF(th.led0_r, io_gpio.pins(1))
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|
|
|
|
IOBUF(th.led0_g, io_gpio.pins(2))
|
|
|
|
|
IOBUF(th.led0_b, io_gpio.pins(3))
|
|
|
|
|
|
|
|
|
|
// Note that this is the one which is actually connected on the HiFive/Crazy88
|
|
|
|
|
// Board. Same with RGB LED1 R,G,B inputs = PWM1(1,2,3) when iof_1 is active
|
|
|
|
|
IOBUF(th.led1_r, io_gpio.pins(19))
|
|
|
|
|
IOBUF(th.led1_g, io_gpio.pins(21))
|
|
|
|
|
IOBUF(th.led1_b, io_gpio.pins(22))
|
|
|
|
|
|
|
|
|
|
// and RGB LED2 R,G,B inputs = PWM2(1,2,3) when iof_1 is active
|
|
|
|
|
IOBUF(th.led2_r, io_gpio.pins(11))
|
|
|
|
|
IOBUF(th.led2_g, io_gpio.pins(12))
|
|
|
|
|
IOBUF(th.led2_b, io_gpio.pins(13))
|
|
|
|
|
|
|
|
|
|
// Only 19 out of 20 shield pins connected to GPIO pins
|
|
|
|
|
// Shield pin A5 (pin 14) left unconnected
|
|
|
|
|
// The buttons are connected to some extra GPIO pins not connected on the
|
|
|
|
|
// HiFive1 board
|
|
|
|
|
IOBUF(th.btn_0, io_gpio.pins(15))
|
|
|
|
|
IOBUF(th.btn_1, io_gpio.pins(30))
|
|
|
|
|
IOBUF(th.btn_2, io_gpio.pins(31))
|
|
|
|
|
|
|
|
|
|
// UART1 RX/TX pins are assigned to PMOD_D connector pins 0/1
|
|
|
|
|
IOBUF(th.ja_0, io_gpio.pins(25)) // UART1 TX
|
|
|
|
|
IOBUF(th.ja_1, io_gpio.pins(24)) // UART1 RX
|
|
|
|
|
|
|
|
|
|
// SPI2 pins mapped to 6 pin ICSP connector (standard on later
|
|
|
|
|
// arduinos) These are connected to some extra GPIO pins not connected
|
|
|
|
|
// on the HiFive1 board
|
|
|
|
|
IOBUF(th.ck_ss, io_gpio.pins(26))
|
|
|
|
|
IOBUF(th.ck_mosi, io_gpio.pins(27))
|
|
|
|
|
IOBUF(th.ck_miso, io_gpio.pins(28))
|
|
|
|
|
IOBUF(th.ck_sck, io_gpio.pins(29))
|
|
|
|
|
|
|
|
|
|
// Use the LEDs for some more useful debugging things
|
|
|
|
|
IOBUF(th.led_0, th.ck_rst)
|
|
|
|
|
IOBUF(th.led_1, th.SRST_n)
|
|
|
|
|
IOBUF(th.led_3, io_gpio.pins(14))
|
|
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
|
|
|
// Unconnected inputs
|
|
|
|
|
//---------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Nil
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Seq((Nil, Nil, Some(harnessFn)))
|
|
|
|
|
}
|
|
|
|
|
})
|
|
|
|
|
|