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https://github.com/tinygo-org/tinygo.git
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Add RP2350 support (#4459)
machine/rp2350: add support * add linker scripts for rp2350 * add bootloader * begin melding rp2040 and rp2350 APIs * add UART * add rp2350 boot patching * Fix RP2350 memory layout (#4626) * Remove rp2040-style second stage bootloader. * Add 'minimum viable' IMAGE_DEF embedded block * Create a pico2 specific target * Implement rp2350 init, clock, and uart support * Merge rp2 reset code back together * Separate chip-specific clock definitions * Clear pad isolation bit on rp2350 * Init UART in rp2350 runtime * Correct usb/serial initialization order * Implement jump-to-bootloader * test: add pico2 to smoketests --------- Signed-off-by: deadprogram <ron@hybridgroup.com> Co-authored-by: Matthew Mets <matt.mets@cibomahto.com> Co-authored-by: Matt Mets <matt@blinkinlabs.com> Co-authored-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
Patricio Whittingslow
committed by
GitHub
GitHub
parent
0d13e61d0c
commit
37f35f8c91
@@ -0,0 +1,380 @@
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//go:build rp2350
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package machine
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import (
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"device/rp"
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"machine/usb"
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"runtime/interrupt"
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"runtime/volatile"
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"unsafe"
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)
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var (
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sendOnEP0DATADONE struct {
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offset int
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data []byte
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pid uint32
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}
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)
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// Configure the USB peripheral. The config is here for compatibility with the UART interface.
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func (dev *USBDevice) Configure(config UARTConfig) {
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// Reset usb controller
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resetBlock(rp.RESETS_RESET_USBCTRL)
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unresetBlockWait(rp.RESETS_RESET_USBCTRL)
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// Clear any previous state in dpram just in case
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usbDPSRAM.clear()
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// Enable USB interrupt at processor
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rp.USB.INTE.Set(0)
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intr := interrupt.New(rp.IRQ_USBCTRL_IRQ, handleUSBIRQ)
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intr.SetPriority(0x00)
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intr.Enable()
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irqSet(rp.IRQ_USBCTRL_IRQ, true)
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// Mux the controller to the onboard usb phy
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rp.USB.USB_MUXING.Set(rp.USB_USB_MUXING_TO_PHY | rp.USB_USB_MUXING_SOFTCON)
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// Force VBUS detect so the device thinks it is plugged into a host
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rp.USB.USB_PWR.Set(rp.USB_USB_PWR_VBUS_DETECT | rp.USB_USB_PWR_VBUS_DETECT_OVERRIDE_EN)
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// Enable the USB controller in device mode.
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rp.USB.MAIN_CTRL.Set(rp.USB_MAIN_CTRL_CONTROLLER_EN)
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// Enable an interrupt per EP0 transaction
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rp.USB.SIE_CTRL.Set(rp.USB_SIE_CTRL_EP0_INT_1BUF)
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// Enable interrupts for when a buffer is done, when the bus is reset,
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// and when a setup packet is received
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rp.USB.INTE.Set(rp.USB_INTE_BUFF_STATUS |
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rp.USB_INTE_BUS_RESET |
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rp.USB_INTE_SETUP_REQ)
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// Present full speed device by enabling pull up on DP
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rp.USB.SIE_CTRL.SetBits(rp.USB_SIE_CTRL_PULLUP_EN)
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// 12.7.2 Disable phy isolation
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rp.USB.SetMAIN_CTRL_PHY_ISO(0x0)
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}
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func handleUSBIRQ(intr interrupt.Interrupt) {
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status := rp.USB.INTS.Get()
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// Setup packet received
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if (status & rp.USB_INTS_SETUP_REQ) > 0 {
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rp.USB.SIE_STATUS.Set(rp.USB_SIE_STATUS_SETUP_REC)
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setup := usb.NewSetup(usbDPSRAM.setupBytes())
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ok := false
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if (setup.BmRequestType & usb.REQUEST_TYPE) == usb.REQUEST_STANDARD {
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// Standard Requests
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ok = handleStandardSetup(setup)
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} else {
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// Class Interface Requests
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if setup.WIndex < uint16(len(usbSetupHandler)) && usbSetupHandler[setup.WIndex] != nil {
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ok = usbSetupHandler[setup.WIndex](setup)
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}
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}
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if !ok {
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// Stall endpoint?
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sendStallViaEPIn(0)
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}
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}
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// Buffer status, one or more buffers have completed
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if (status & rp.USB_INTS_BUFF_STATUS) > 0 {
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if sendOnEP0DATADONE.offset > 0 {
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ep := uint32(0)
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data := sendOnEP0DATADONE.data
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count := len(data) - sendOnEP0DATADONE.offset
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if ep == 0 && count > usb.EndpointPacketSize {
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count = usb.EndpointPacketSize
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}
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sendViaEPIn(ep, data[sendOnEP0DATADONE.offset:], count)
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sendOnEP0DATADONE.offset += count
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if sendOnEP0DATADONE.offset == len(data) {
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sendOnEP0DATADONE.offset = 0
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}
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}
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s2 := rp.USB.BUFF_STATUS.Get()
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// OUT (PC -> rp2040)
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for i := 0; i < 16; i++ {
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if s2&(1<<(i*2+1)) > 0 {
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buf := handleEndpointRx(uint32(i))
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if usbRxHandler[i] != nil {
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usbRxHandler[i](buf)
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}
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handleEndpointRxComplete(uint32(i))
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}
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}
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// IN (rp2040 -> PC)
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for i := 0; i < 16; i++ {
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if s2&(1<<(i*2)) > 0 {
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if usbTxHandler[i] != nil {
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usbTxHandler[i]()
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}
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}
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}
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rp.USB.BUFF_STATUS.Set(s2)
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}
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// Bus is reset
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if (status & rp.USB_INTS_BUS_RESET) > 0 {
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rp.USB.SIE_STATUS.Set(rp.USB_SIE_STATUS_BUS_RESET)
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//fixRP2040UsbDeviceEnumeration()
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rp.USB.ADDR_ENDP.Set(0)
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initEndpoint(0, usb.ENDPOINT_TYPE_CONTROL)
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}
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}
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func initEndpoint(ep, config uint32) {
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val := uint32(usbEpControlEnable) | uint32(usbEpControlInterruptPerBuff)
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offset := ep*2*USBBufferLen + 0x100
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val |= offset
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switch config {
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case usb.ENDPOINT_TYPE_INTERRUPT | usb.EndpointIn:
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val |= usbEpControlEndpointTypeInterrupt
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usbDPSRAM.EPxControl[ep].In.Set(val)
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case usb.ENDPOINT_TYPE_BULK | usb.EndpointOut:
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val |= usbEpControlEndpointTypeBulk
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usbDPSRAM.EPxControl[ep].Out.Set(val)
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usbDPSRAM.EPxBufferControl[ep].Out.Set(USBBufferLen & usbBuf0CtrlLenMask)
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usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
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case usb.ENDPOINT_TYPE_INTERRUPT | usb.EndpointOut:
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val |= usbEpControlEndpointTypeInterrupt
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usbDPSRAM.EPxControl[ep].Out.Set(val)
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usbDPSRAM.EPxBufferControl[ep].Out.Set(USBBufferLen & usbBuf0CtrlLenMask)
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usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
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case usb.ENDPOINT_TYPE_BULK | usb.EndpointIn:
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val |= usbEpControlEndpointTypeBulk
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usbDPSRAM.EPxControl[ep].In.Set(val)
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case usb.ENDPOINT_TYPE_CONTROL:
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val |= usbEpControlEndpointTypeControl
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usbDPSRAM.EPxBufferControl[ep].Out.Set(usbBuf0CtrlData1Pid)
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usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
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}
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}
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func handleUSBSetAddress(setup usb.Setup) bool {
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sendUSBPacket(0, []byte{}, 0)
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// last, set the device address to that requested by host
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// wait for transfer to complete
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timeout := 3000
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rp.USB.SIE_STATUS.Set(rp.USB_SIE_STATUS_ACK_REC)
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for (rp.USB.SIE_STATUS.Get() & rp.USB_SIE_STATUS_ACK_REC) == 0 {
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timeout--
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if timeout == 0 {
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return true
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}
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}
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rp.USB.ADDR_ENDP.Set(uint32(setup.WValueL) & rp.USB_ADDR_ENDP_ADDRESS_Msk)
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return true
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}
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// SendUSBInPacket sends a packet for USB (interrupt in / bulk in).
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func SendUSBInPacket(ep uint32, data []byte) bool {
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sendUSBPacket(ep, data, 0)
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return true
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}
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//go:noinline
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func sendUSBPacket(ep uint32, data []byte, maxsize uint16) {
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count := len(data)
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if 0 < int(maxsize) && int(maxsize) < count {
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count = int(maxsize)
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}
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if ep == 0 {
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if count > usb.EndpointPacketSize {
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count = usb.EndpointPacketSize
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sendOnEP0DATADONE.offset = count
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sendOnEP0DATADONE.data = data
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} else {
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sendOnEP0DATADONE.offset = 0
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}
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epXdata0[ep] = true
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}
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sendViaEPIn(ep, data, count)
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}
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func ReceiveUSBControlPacket() ([cdcLineInfoSize]byte, error) {
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var b [cdcLineInfoSize]byte
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ep := 0
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for !usbDPSRAM.EPxBufferControl[ep].Out.HasBits(usbBuf0CtrlFull) {
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// TODO: timeout
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}
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ctrl := usbDPSRAM.EPxBufferControl[ep].Out.Get()
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usbDPSRAM.EPxBufferControl[ep].Out.Set(USBBufferLen & usbBuf0CtrlLenMask)
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sz := ctrl & usbBuf0CtrlLenMask
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copy(b[:], usbDPSRAM.EPxBuffer[ep].Buffer0[:sz])
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usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlData1Pid)
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usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
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return b, nil
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}
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func handleEndpointRx(ep uint32) []byte {
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ctrl := usbDPSRAM.EPxBufferControl[ep].Out.Get()
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usbDPSRAM.EPxBufferControl[ep].Out.Set(USBBufferLen & usbBuf0CtrlLenMask)
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sz := ctrl & usbBuf0CtrlLenMask
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return usbDPSRAM.EPxBuffer[ep].Buffer0[:sz]
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}
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func handleEndpointRxComplete(ep uint32) {
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epXdata0[ep] = !epXdata0[ep]
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if epXdata0[ep] || ep == 0 {
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usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlData1Pid)
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}
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usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
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}
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func SendZlp() {
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sendUSBPacket(0, []byte{}, 0)
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}
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func sendViaEPIn(ep uint32, data []byte, count int) {
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// Prepare buffer control register value
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val := uint32(count) | usbBuf0CtrlAvail
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// DATA0 or DATA1
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epXdata0[ep&0x7F] = !epXdata0[ep&0x7F]
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if !epXdata0[ep&0x7F] {
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val |= usbBuf0CtrlData1Pid
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}
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// Mark as full
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val |= usbBuf0CtrlFull
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copy(usbDPSRAM.EPxBuffer[ep&0x7F].Buffer0[:], data[:count])
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usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
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}
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func sendStallViaEPIn(ep uint32) {
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// Prepare buffer control register value
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if ep == 0 {
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rp.USB.EP_STALL_ARM.Set(rp.USB_EP_STALL_ARM_EP0_IN)
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}
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val := uint32(usbBuf0CtrlFull)
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usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
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val |= uint32(usbBuf0CtrlStall)
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usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
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}
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type USBDPSRAM struct {
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// Note that EPxControl[0] is not EP0Control but 8-byte setup data.
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EPxControl [16]USBEndpointControlRegister
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EPxBufferControl [16]USBBufferControlRegister
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EPxBuffer [16]USBBuffer
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}
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type USBEndpointControlRegister struct {
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In volatile.Register32
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Out volatile.Register32
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}
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type USBBufferControlRegister struct {
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In volatile.Register32
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Out volatile.Register32
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}
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type USBBuffer struct {
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Buffer0 [USBBufferLen]byte
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Buffer1 [USBBufferLen]byte
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}
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var (
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usbDPSRAM = (*USBDPSRAM)(unsafe.Pointer(uintptr(0x50100000)))
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epXdata0 [16]bool
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setupBytes [8]byte
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)
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func (d *USBDPSRAM) setupBytes() []byte {
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data := d.EPxControl[usb.CONTROL_ENDPOINT].In.Get()
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setupBytes[0] = byte(data)
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setupBytes[1] = byte(data >> 8)
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setupBytes[2] = byte(data >> 16)
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setupBytes[3] = byte(data >> 24)
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data = d.EPxControl[usb.CONTROL_ENDPOINT].Out.Get()
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setupBytes[4] = byte(data)
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setupBytes[5] = byte(data >> 8)
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setupBytes[6] = byte(data >> 16)
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setupBytes[7] = byte(data >> 24)
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return setupBytes[:]
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}
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func (d *USBDPSRAM) clear() {
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for i := 0; i < len(d.EPxControl); i++ {
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d.EPxControl[i].In.Set(0)
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d.EPxControl[i].Out.Set(0)
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d.EPxBufferControl[i].In.Set(0)
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d.EPxBufferControl[i].Out.Set(0)
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}
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}
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const (
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// DPRAM : Endpoint control register
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usbEpControlEnable = 0x80000000
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usbEpControlDoubleBuffered = 0x40000000
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usbEpControlInterruptPerBuff = 0x20000000
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usbEpControlInterruptPerDoubleBuff = 0x10000000
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usbEpControlEndpointType = 0x0c000000
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usbEpControlInterruptOnStall = 0x00020000
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usbEpControlInterruptOnNak = 0x00010000
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usbEpControlBufferAddress = 0x0000ffff
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usbEpControlEndpointTypeControl = 0x00000000
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usbEpControlEndpointTypeISO = 0x04000000
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usbEpControlEndpointTypeBulk = 0x08000000
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usbEpControlEndpointTypeInterrupt = 0x0c000000
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// Endpoint buffer control bits
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usbBuf1CtrlFull = 0x80000000
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usbBuf1CtrlLast = 0x40000000
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usbBuf1CtrlData0Pid = 0x20000000
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usbBuf1CtrlData1Pid = 0x00000000
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usbBuf1CtrlSel = 0x10000000
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usbBuf1CtrlStall = 0x08000000
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usbBuf1CtrlAvail = 0x04000000
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usbBuf1CtrlLenMask = 0x03FF0000
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usbBuf0CtrlFull = 0x00008000
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usbBuf0CtrlLast = 0x00004000
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usbBuf0CtrlData0Pid = 0x00000000
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usbBuf0CtrlData1Pid = 0x00002000
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usbBuf0CtrlSel = 0x00001000
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usbBuf0CtrlStall = 0x00000800
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usbBuf0CtrlAvail = 0x00000400
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usbBuf0CtrlLenMask = 0x000003FF
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USBBufferLen = 64
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)
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