diff options
| author | Ashley DeSimone <ashley.e.desimone@intel.com> | 2013-10-29 17:46:03 +0000 |
|---|---|---|
| committer | ashdesimone <ashdesimone@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-10-29 17:46:03 +0000 |
| commit | 3f1484f6f7bc3184a7e06fed414ae7eb4ae3ecfe (patch) | |
| tree | c1e3cfbaa11d448e0ccc04cc6af6a7b7cce1f723 /OptionRomPkg/Bus | |
| parent | 5b5cd144f3187f4208c6c9430c9752a4c5cdd415 (diff) | |
| download | edk2-platforms-3f1484f6f7bc3184a7e06fed414ae7eb4ae3ecfe.tar.xz | |
OptionRomPkg: Added bus driver for FTDI USB to serial adapters
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ashley DeSimone <ashley.e.desimone@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14817 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OptionRomPkg/Bus')
6 files changed, 3505 insertions, 0 deletions
diff --git a/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/CompatibleDevices.txt b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/CompatibleDevices.txt new file mode 100644 index 0000000000..1ec1cce0d1 --- /dev/null +++ b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/CompatibleDevices.txt @@ -0,0 +1,5 @@ +The following devices have been confirmed to work with the USB Serial Driver:
+
+Brand Model Name Product Name Vendor ID Device ID
+Gearmo USA_FTDI-36 USB to RS-232 0x0403 0x6001
+Sabrent CB-FTDI 0x0403 0x6001
\ No newline at end of file diff --git a/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/ComponentName.c b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/ComponentName.c new file mode 100644 index 0000000000..c200878d47 --- /dev/null +++ b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/ComponentName.c @@ -0,0 +1,224 @@ +/** @file
+ UEFI Component Name(2) protocol implementation for USB Serial driver.
+
+Copyright (c) 2004 - 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD
+License which accompanies this distribution. The full text of the license may
+be found at http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "FtdiUsbSerialDriver.h"
+
+//
+// EFI Component Name Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL gUsbSerialComponentName = {
+ (EFI_COMPONENT_NAME_GET_DRIVER_NAME) UsbSerialComponentNameGetDriverName,
+ (EFI_COMPONENT_NAME_GET_CONTROLLER_NAME) UsbSerialComponentNameGetControllerName,
+ "eng"
+};
+
+//
+// EFI Component Name 2 Protocol
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gUsbSerialComponentName2 = {
+ UsbSerialComponentNameGetDriverName,
+ UsbSerialComponentNameGetControllerName,
+ "en"
+};
+
+//
+// Driver name string table
+//
+GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mUsbSerialDriverNameTable[] = {
+ { "eng;en", L"FTDI-232 USB Serial Driver" },
+ { NULL , NULL }
+};
+
+/**
+ Retrieves a Unicode string that is the user readable name of the driver.
+
+ This function retrieves the user readable name of a driver in the form of a
+ Unicode string. If the driver specified by This has a user readable name in
+ the language specified by Language, then a pointer to the driver name is
+ returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
+ by This does not support the language specified by Language,
+ then EFI_UNSUPPORTED is returned.
+
+ @param This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
+ EFI_COMPONENT_NAME_PROTOCOL instance.
+ @param Language A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller is
+ requesting, and it must match one of the
+ languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up
+ to the driver writer. Language is specified
+ in RFC 4646 or ISO 639-2 language code format.
+ @param DriverName A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ driver specified by This in the language
+ specified by Language.
+
+ @retval EFI_SUCCESS The Unicode string for the Driver specified by
+ This and the language specified by Language was
+ returned in DriverName.
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER DriverName is NULL.
+ @retval EFI_UNSUPPORTED The driver specified by This does not support
+ the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialComponentNameGetDriverName (
+ IN EFI_COMPONENT_NAME2_PROTOCOL *This,
+ IN CHAR8 *Language,
+ OUT CHAR16 **DriverName
+ )
+{
+ return LookupUnicodeString2 (
+ Language,
+ This->SupportedLanguages,
+ mUsbSerialDriverNameTable,
+ DriverName,
+ (BOOLEAN)(This == &gUsbSerialComponentName2)
+ );
+}
+
+
+/**
+ Retrieves a Unicode string that is the user readable name of the controller
+ that is being managed by a driver.
+
+ This function retrieves the user readable name of the controller specified by
+ ControllerHandle and ChildHandle in the form of a Unicode string. If the
+ driver specified by This has a user readable name in the language specified by
+ Language, then a pointer to the controller name is returned in ControllerName,
+ and EFI_SUCCESS is returned. If the driver specified by This is not currently
+ managing the controller specified by ControllerHandle and ChildHandle,
+ then EFI_UNSUPPORTED is returned. If the driver specified by This does not
+ support the language specified by Language, then EFI_UNSUPPORTED is returned.
+
+ @param This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
+ EFI_COMPONENT_NAME_PROTOCOL instance.
+ @param ControllerHandle The handle of a controller that the driver
+ specified by This is managing. This handle
+ specifies the controller whose name is to be
+ returned.
+ @param ChildHandle The handle of the child controller to retrieve
+ the name of. This is an optional parameter that
+ may be NULL. It will be NULL for device
+ drivers. It will also be NULL for a bus drivers
+ that wish to retrieve the name of the bus
+ controller. It will not be NULL for a bus
+ driver that wishes to retrieve the name of a
+ child controller.
+ @param Language A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller is
+ requesting, and it must match one of the
+ languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up
+ to the driver writer. Language is specified in
+ RFC 4646 or ISO 639-2 language code format.
+ @param ControllerName A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ controller specified by ControllerHandle and
+ ChildHandle in the language specified by
+ Language from the point of view of the driver
+ specified by This.
+
+ @retval EFI_SUCCESS The Unicode string for the user readable name in
+ the language specified by Language for the
+ driver specified by This was returned in
+ DriverName.
+ @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
+ @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
+ EFI_HANDLE.
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER ControllerName is NULL.
+ @retval EFI_UNSUPPORTED The driver specified by This is not currently
+ managing the controller specified by
+ ControllerHandle and ChildHandle.
+ @retval EFI_UNSUPPORTED The driver specified by This does not support
+ the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialComponentNameGetControllerName (
+ IN EFI_COMPONENT_NAME2_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_HANDLE ChildHandle OPTIONAL,
+ IN CHAR8 *Language,
+ OUT CHAR16 **ControllerName
+ )
+{
+ EFI_STATUS Status;
+ USB_SER_DEV *UsbSerDev;
+ EFI_SERIAL_IO_PROTOCOL *SerialIo;
+ EFI_USB_IO_PROTOCOL *UsbIoProtocol;
+
+ //
+ // This is a device driver, so ChildHandle must be NULL.
+ //
+ if (ChildHandle != NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // Check Controller's handle
+ //
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiUsbIoProtocolGuid,
+ (VOID **) &UsbIoProtocol,
+ gUsbSerialDriverBinding.DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (!EFI_ERROR (Status)) {
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiUsbIoProtocolGuid,
+ gUsbSerialDriverBinding.DriverBindingHandle,
+ ControllerHandle
+ );
+
+ return EFI_UNSUPPORTED;
+ }
+
+ if (Status != EFI_ALREADY_STARTED) {
+ return EFI_UNSUPPORTED;
+ }
+ //
+ // Get the device context
+ //
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiSerialIoProtocolGuid,
+ (VOID **) &SerialIo,
+ gUsbSerialDriverBinding.DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ UsbSerDev = USB_SER_DEV_FROM_THIS (SerialIo);
+
+ return LookupUnicodeString2 (
+ Language,
+ This->SupportedLanguages,
+ UsbSerDev->ControllerNameTable,
+ ControllerName,
+ (BOOLEAN)(This == &gUsbSerialComponentName2)
+ );
+}
diff --git a/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDriver.c b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDriver.c new file mode 100644 index 0000000000..595ef4a3e2 --- /dev/null +++ b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDriver.c @@ -0,0 +1,2588 @@ +/** @file
+ USB Serial Driver that manages USB to Serial and produces Serial IO Protocol.
+
+Copyright (c) 2004 - 2013, Intel Corporation. All rights reserved.
+Portions Copyright 2012 Ashley DeSimone
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD
+License which accompanies this distribution. The full text of the license may
+be found at http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+//
+
+// Tested with VEND_ID 0x0403, DEVICE_ID 0x6001
+//
+// Driver starts the device with the following values:
+// 115200, No parity, 8 data bits, 1 stop bit, No Flow control
+//
+
+#include "FtdiUsbSerialDriver.h"
+
+//
+// Table of supported devices. This is the device information that this
+// driver was developed with. Add other FTDI devices as needed.
+//
+USB_DEVICE gUSBDeviceList[] = {
+ {VID_FTDI, DID_FTDI_FT232},
+ {0,0}
+};
+
+//
+// USB Serial Driver Global Variables
+//
+EFI_DRIVER_BINDING_PROTOCOL gUsbSerialDriverBinding = {
+ UsbSerialDriverBindingSupported,
+ UsbSerialDriverBindingStart,
+ UsbSerialDriverBindingStop,
+ 0xa,
+ NULL,
+ NULL
+};
+
+//
+// Table with the nearest power of 2 for the numbers 0-15
+//
+UINT8 gRoundedPowersOf2[16] = { 0, 2, 2, 4, 4, 4, 8, 8, 8, 8, 8, 8, 16, 16, 16, 16 };
+
+/**
+ Check to see if the device path node is the Flow control node
+
+ @param[in] FlowControl The device path node to be checked
+
+ @retval TRUE It is the flow control node
+ @retval FALSE It is not the flow control node
+
+**/
+BOOLEAN
+IsUartFlowControlNode (
+ IN UART_FLOW_CONTROL_DEVICE_PATH *FlowControl
+ )
+{
+ return (BOOLEAN) (
+ (DevicePathType (FlowControl) == MESSAGING_DEVICE_PATH) &&
+ (DevicePathSubType (FlowControl) == MSG_VENDOR_DP) &&
+ (CompareGuid (&FlowControl->Guid, &gEfiUartDevicePathGuid))
+ );
+}
+
+/**
+ Checks the device path to see if it contains flow control.
+
+ @param[in] DevicePath The device path to be checked
+
+ @retval TRUE It contains flow control
+ @retval FALSE It does not contain flow control
+
+**/
+BOOLEAN
+ContainsFlowControl (
+ IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
+ )
+{
+ while (!IsDevicePathEnd (DevicePath)) {
+ if (IsUartFlowControlNode ((UART_FLOW_CONTROL_DEVICE_PATH *) DevicePath)) {
+ return TRUE;
+ }
+ DevicePath = NextDevicePathNode (DevicePath);
+ }
+ return FALSE;
+}
+
+/**
+ Transfer the data between the device and host.
+
+ This function transfers the data between the device and host.
+ BOT transfer is composed of three phases: Command, Data, and Status.
+ This is the Data phase.
+
+ @param UsbBot[in] The USB BOT device
+ @param DataDir[in] The direction of the data
+ @param Data[in, out] The buffer to hold data
+ @param TransLen[in, out] The expected length of the data
+ @param Timeout[in] The time to wait the command to complete
+
+ @retval EFI_SUCCESS The data is transferred
+ @retval EFI_SUCCESS No data to transfer
+ @retval EFI_NOT_READY The device return NAK to the transfer
+ @retval Others Failed to transfer data
+
+**/
+EFI_STATUS
+UsbSerialDataTransfer (
+ IN USB_SER_DEV *UsbBot,
+ IN EFI_USB_DATA_DIRECTION DataDir,
+ IN OUT VOID *Data,
+ IN OUT UINTN *TransLen,
+ IN UINT32 Timeout
+ )
+{
+ EFI_USB_ENDPOINT_DESCRIPTOR *Endpoint;
+ EFI_STATUS Status;
+ UINT32 Result;
+
+ //
+ // If no data to transfer, just return EFI_SUCCESS.
+ //
+ if ((DataDir == EfiUsbNoData) || (*TransLen == 0)) {
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Select the endpoint then issue the transfer
+ //
+ if (DataDir == EfiUsbDataIn) {
+ Endpoint = &UsbBot->InEndpointDescriptor;
+ } else {
+ Endpoint = &UsbBot->OutEndpointDescriptor;
+ }
+
+ Result = 0;
+ Status = UsbBot->UsbIo->UsbBulkTransfer (
+ UsbBot->UsbIo,
+ Endpoint->EndpointAddress,
+ Data,
+ TransLen,
+ Timeout,
+ &Result
+ );
+ if (EFI_ERROR (Status)) {
+ if (USB_IS_ERROR (Result, EFI_USB_ERR_NAK)) {
+ Status = EFI_NOT_READY;
+ } else {
+ UsbBot->Shutdown = TRUE; // Fixes infinite loop in older EFI
+ }
+ return Status;
+ }
+ return Status;
+}
+
+/**
+ Sets the status values of the Usb Serial Device.
+
+ @param UsbSerialDevice[in] Handle to the Usb Serial Device to set the status
+ for
+ @param StatusBuffer[in] Buffer holding the status values
+
+ @retval EFI_SUCCESS The status values were read and set correctly
+
+**/
+EFI_STATUS
+EFIAPI
+SetStatusInternal (
+ IN USB_SER_DEV *UsbSerialDevice,
+ IN UINT8 *StatusBuffer
+ )
+{
+ UINT8 Msr;
+
+ Msr = (StatusBuffer[0] & MSR_MASK);
+
+ //
+ // set the Status values to disabled
+ //
+ UsbSerialDevice->StatusValues.CtsState = FALSE;
+ UsbSerialDevice->StatusValues.DsrState = FALSE;
+ UsbSerialDevice->StatusValues.RiState = FALSE;
+ UsbSerialDevice->StatusValues.SdState = FALSE;
+
+ //
+ // Check the values from the status buffer and set the appropriate status
+ // values to enabled
+ //
+ if ((Msr & CTS_MASK) == CTS_MASK) {
+ UsbSerialDevice->StatusValues.CtsState = TRUE;
+ }
+ if ((Msr & DSR_MASK) == DSR_MASK) {
+ UsbSerialDevice->StatusValues.DsrState = TRUE;
+ }
+ if ((Msr & RI_MASK) == RI_MASK) {
+ UsbSerialDevice->StatusValues.RiState = TRUE;
+ }
+ if ((Msr & SD_MASK) == SD_MASK) {
+ UsbSerialDevice->StatusValues.SdState = TRUE;
+ }
+ return EFI_SUCCESS;
+}
+
+/**
+ Initiates a read operation on the Usb Serial Device.
+
+ @param UsbSerialDevice[in] Handle to the USB device to read
+ @param BufferSize[in, out] On input, the size of the Buffer. On output,
+ the amount of data returned in Buffer.
+ Setting this to zero will initiate a read
+ and store all data returned in the internal
+ buffer.
+ @param Buffer [out] The buffer to return the data into.
+
+ @retval EFI_SUCCESS The data was read.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_TIMEOUT The data write was stopped due to a timeout.
+
+**/
+EFI_STATUS
+EFIAPI
+ReadDataFromUsb (
+ IN USB_SER_DEV *UsbSerialDevice,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINTN ReadBufferSize;
+ UINT8 *ReadBuffer;
+ UINTN Index;
+ EFI_TPL Tpl;
+ UINT8 StatusBuffer[2]; // buffer to store the status bytes
+
+ ReadBufferSize = 512;
+ ReadBuffer = &(UsbSerialDevice->ReadBuffer[0]);
+
+ if (UsbSerialDevice->Shutdown) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ Tpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ Status = UsbSerialDataTransfer (
+ UsbSerialDevice,
+ EfiUsbDataIn,
+ ReadBuffer,
+ &ReadBufferSize,
+ FTDI_TIMEOUT*2 //Padded because timers won't be exactly aligned
+ );
+ if (EFI_ERROR (Status)) {
+ gBS->RestoreTPL (Tpl);
+ if (Status == EFI_TIMEOUT) {
+ return EFI_TIMEOUT;
+ } else {
+ return EFI_DEVICE_ERROR;
+ }
+ }
+
+ //
+ // Store the status bytes in the status buffer
+ //
+ for (Index = 0; Index < 2; Index++) {//only the first 2 bytes are status bytes
+ StatusBuffer[Index] = ReadBuffer[Index];
+ }
+ //
+ // update the statusvalue field of the usbserialdevice
+ //
+ Status = SetStatusInternal (UsbSerialDevice, StatusBuffer);
+ if (Status != EFI_SUCCESS) {
+ }
+
+ //
+ // Store the read data in the read buffer, start at 2 to ignore status bytes
+ //
+ for (Index = 2; Index < ReadBufferSize; Index++) {
+ if (((UsbSerialDevice->DataBufferTail + 1) % SW_FIFO_DEPTH) == UsbSerialDevice->DataBufferHead) {
+ break;
+ }
+ if (ReadBuffer[Index] == 0x00) {
+ //
+ // This is null, do not add
+ //
+ } else {
+ UsbSerialDevice->DataBuffer[UsbSerialDevice->DataBufferTail] = ReadBuffer[Index];
+ UsbSerialDevice->DataBufferTail = (UsbSerialDevice->DataBufferTail + 1) % SW_FIFO_DEPTH;
+ }
+ }
+
+ //
+ // Read characters out of the buffer to satisfy caller's request.
+ //
+ for (Index = 0; Index < *BufferSize; Index++) {
+ if (UsbSerialDevice->DataBufferHead == UsbSerialDevice->DataBufferTail) {
+ break;
+ }
+ //
+ // Still have characters in the buffer to return
+ //
+ ((UINT8 *)Buffer)[Index] = UsbSerialDevice->DataBuffer[UsbSerialDevice->DataBufferHead];
+ UsbSerialDevice->DataBufferHead = (UsbSerialDevice->DataBufferHead + 1) % SW_FIFO_DEPTH;
+ }
+ //
+ // Return actual number of bytes returned.
+ //
+ *BufferSize = Index;
+ gBS->RestoreTPL (Tpl);
+ return EFI_SUCCESS;
+}
+
+/**
+ Sets the initial status values of the Usb Serial Device by reading the status
+ bytes from the device.
+
+ @param UsbSerialDevice[in] Handle to the Usb Serial Device that needs its
+ initial status values set
+
+ @retval EFI_SUCCESS The status bytes were read successfully and the
+ initial status values were set correctly
+ @retval EFI_TIMEOUT The read of the status bytes was stopped due to a
+ timeout
+ @retval EFI_DEVICE_ERROR The device reported an error during the read of
+ the status bytes
+
+**/
+EFI_STATUS
+EFIAPI
+SetInitialStatus (
+ IN USB_SER_DEV *UsbSerialDevice
+ )
+{
+ EFI_STATUS Status;
+ UINTN BufferSize;
+ EFI_TPL Tpl;
+ UINT8 StatusBuffer[2];
+
+ Status = EFI_UNSUPPORTED;
+ BufferSize = sizeof (StatusBuffer);
+
+ if (UsbSerialDevice->Shutdown) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ Tpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ Status = UsbSerialDataTransfer (
+ UsbSerialDevice,
+ EfiUsbDataIn,
+ StatusBuffer,
+ &BufferSize,
+ 40 //Slightly more than 2x the FTDI polling frequency to make sure that data will be returned
+ );
+
+ Status = SetStatusInternal (UsbSerialDevice, StatusBuffer);
+
+ gBS->RestoreTPL (Tpl);
+
+ return Status;
+}
+
+/**
+ UsbSerialDriverCheckInput.
+ attempts to read data in from the device periodically, stores any read data
+ and updates the control attributes.
+
+ @param Event[in]
+ @param Context[in]....The current instance of the USB serial device
+
+**/
+VOID
+EFIAPI
+UsbSerialDriverCheckInput (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ UINTN BufferSize;
+ USB_SER_DEV *UsbSerialDevice;
+
+ UsbSerialDevice = (USB_SER_DEV*)Context;
+
+ if (UsbSerialDevice->DataBufferHead == UsbSerialDevice->DataBufferTail) {
+ //
+ // Data buffer is empty, try to read from device
+ //
+ BufferSize = 0;
+ ReadDataFromUsb (UsbSerialDevice, &BufferSize, NULL);
+ if (UsbSerialDevice->DataBufferHead == UsbSerialDevice->DataBufferTail) {
+ //
+ // Data buffer still has no data, set the EFI_SERIAL_INPUT_BUFFER_EMPTY
+ // flag
+ //
+ UsbSerialDevice->ControlBits |= EFI_SERIAL_INPUT_BUFFER_EMPTY;
+ } else {
+ //
+ // Read has returned some data, clear the EFI_SERIAL_INPUT_BUFFER_EMPTY
+ // flag
+ //
+ UsbSerialDevice->ControlBits &= ~(EFI_SERIAL_INPUT_BUFFER_EMPTY);
+ }
+ } else {
+ //
+ // Data buffer has data, no read attempt required
+ //
+ UsbSerialDevice->ControlBits &= ~(EFI_SERIAL_INPUT_BUFFER_EMPTY);
+ }
+}
+
+/**
+ Encodes the baud rate into the format expected by the Ftdi device.
+
+ @param BaudRate[in] The baudrate to be set on the device
+ @param EncodedBaudRate[out] The baud rate encoded in the format
+ expected by the Ftdi device
+
+ @return EFI_SUCCESS Baudrate encoding was calculated
+ successfully
+ @return EFI_INVALID_PARAMETER An invalid value of BaudRate was received
+
+**/
+EFI_STATUS
+EFIAPI
+EncodeBaudRateForFtdi (
+ IN UINT64 BaudRate,
+ OUT UINT16 *EncodedBaudRate
+ )
+{
+ UINT32 Divisor;
+ UINT32 AdjustedFrequency;
+ UINT16 Result;
+
+ //
+ // Check to make sure we won't get an integer overflow
+ //
+ if ((BaudRate < 178) || ( BaudRate > ((FTDI_UART_FREQUENCY * 100) / 97))) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Baud Rates of 2000000 and 3000000 are special cases
+ //
+ if ((BaudRate >= FTDI_SPECIAL_CASE_300_MIN) && (BaudRate <= FTDI_SPECIAL_CASE_300_MAX)) {
+ *EncodedBaudRate = 0;
+ return EFI_SUCCESS;
+ }
+ if ((BaudRate >= FTDI_SPECIAL_CASE_200_MIN) && (BaudRate <= FTDI_SPECIAL_CASE_200_MAX)) {
+ *EncodedBaudRate = 1;
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Compute divisor
+ //
+ Divisor = (FTDI_UART_FREQUENCY << 4) / (UINT32)BaudRate;
+
+ //
+ // Round the last 4 bits to the nearest power of 2
+ //
+ Divisor = (Divisor & ~(0xF)) + (gRoundedPowersOf2[Divisor & 0xF]);
+
+ //
+ // Check to make sure computed divisor is within
+ // the min and max that FTDI controller will accept
+ //
+ if (Divisor < FTDI_MIN_DIVISOR) {
+ Divisor = FTDI_MIN_DIVISOR;
+ } else if (Divisor > FTDI_MAX_DIVISOR) {
+ Divisor = FTDI_MAX_DIVISOR;
+ }
+
+ //
+ // Check to make sure the frequency that the FTDI chip will need to
+ // generate to attain the requested Baud Rate is within 3% of the
+ // 3MHz clock frequency that the FTDI chip runs at.
+ //
+ // (3MHz * 1600) / 103 = 46601941
+ // (3MHz * 1600) / 97 = 49484536
+ //
+ AdjustedFrequency = (((UINT32)BaudRate) * Divisor);
+ if ((AdjustedFrequency < FTDI_MIN_FREQUENCY) || (AdjustedFrequency > FTDI_MAX_FREQUENCY)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Encode the Divisor into the format FTDI expects
+ //
+ Result = (UINT16)(Divisor >> 4);
+ if ((Divisor & 0x8) != 0) {
+ Result |= 0x4000;
+ } else if ((Divisor & 0x4) != 0) {
+ Result |= 0x8000;
+ } else if ((Divisor & 0x2) != 0) {
+ Result |= 0xC000;
+ }
+
+ *EncodedBaudRate = Result;
+ return EFI_SUCCESS;
+}
+
+/**
+ Uses USB I/O to check whether the device is a USB Serial device.
+
+ @param UsbIo[in] Pointer to a USB I/O protocol instance.
+
+ @retval TRUE Device is a USB Serial device.
+ @retval FALSE Device is a not USB Serial device.
+
+**/
+BOOLEAN
+IsUsbSerial (
+ IN EFI_USB_IO_PROTOCOL *UsbIo
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_DEVICE_DESCRIPTOR DeviceDescriptor;
+ CHAR16 *StrMfg;
+ BOOLEAN Found;
+ UINT32 Index;
+
+ //
+ // Get the default device descriptor
+ //
+ Status = UsbIo->UsbGetDeviceDescriptor (
+ UsbIo,
+ &DeviceDescriptor
+ );
+ if (EFI_ERROR (Status)) {
+ return FALSE;
+ }
+
+ Found = FALSE;
+ Index = 0;
+ while (gUSBDeviceList[Index].VendorId != 0 &&
+ gUSBDeviceList[Index].DeviceId != 0 &&
+ !Found ) {
+ if (DeviceDescriptor.IdProduct == gUSBDeviceList[Index].DeviceId &&
+ DeviceDescriptor.IdVendor == gUSBDeviceList[Index].VendorId ){
+ //
+ // Checks to see if a string descriptor can be pulled from the device in
+ // the selected language. If not False is returned indicating that this
+ // is not a Usb Serial Device that can be managegd by this driver
+ //
+ StrMfg = NULL;
+ Status = UsbIo->UsbGetStringDescriptor (
+ UsbIo,
+ USB_US_LANG_ID, // LANGID selector, should make this
+ // more robust to verify lang support
+ // for device
+ DeviceDescriptor.StrManufacturer,
+ &StrMfg
+ );
+ if (StrMfg != NULL) {
+ FreePool (StrMfg);
+ }
+ if (EFI_ERROR (Status)) {
+ return FALSE;
+ }
+ return TRUE;
+ }
+ Index++;
+ }
+ return FALSE;
+}
+
+/**
+ Internal function that sets the Data Bits, Stop Bits and Parity values on the
+ Usb Serial Device with a single usb control transfer.
+
+ @param UsbIo[in] Usb Io Protocol instance pointer
+ @param DataBits[in] The data bits value to be set on the Usb
+ Serial Device
+ @param Parity[in] The parity type that will be set on the Usb
+ Serial Device
+ @param StopBits[in] The stop bits type that will be set on the
+ Usb Serial Device
+ @param LastSettings[in] A pointer to the Usb Serial Device's
+ PREVIOUS_ATTRIBUTES item
+
+ @retval EFI_SUCCESS The data items were correctly set on the
+ USB Serial Device
+ @retval EFI_INVALID_PARAMETER An invalid data parameter or an invalid
+ combination or parameters was used
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly and
+ the data values were unable to be set
+
+**/
+EFI_STATUS
+EFIAPI
+SetDataInternal (
+ IN EFI_USB_IO_PROTOCOL *UsbIo,
+ IN UINT8 DataBits,
+ IN EFI_PARITY_TYPE Parity,
+ IN EFI_STOP_BITS_TYPE StopBits,
+ IN PREVIOUS_ATTRIBUTES *LastSettings
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_DEVICE_REQUEST DevReq;
+ UINT32 ReturnValue;
+ UINT8 ConfigurationValue;
+
+ //
+ // Since data bits settings of 6,7,8 cannot be set with a stop bits setting of
+ // 1.5 check to see if this happens when the values of last settings are used
+ //
+ if ((DataBits == 0) && (StopBits == OneFiveStopBits)) {
+ if ((LastSettings->DataBits == 6) || (LastSettings->DataBits == 7) || (LastSettings->DataBits == 8)) {
+ return EFI_INVALID_PARAMETER;
+ }
+ } else if ((StopBits == DefaultStopBits) && ((DataBits == 6) || (DataBits == 7) || (DataBits == 8))) {
+ if (LastSettings->StopBits == OneFiveStopBits) {
+ return EFI_INVALID_PARAMETER;
+ }
+ } else if ((DataBits == 0) && (StopBits == DefaultStopBits)) {
+ if (LastSettings->StopBits == OneFiveStopBits) {
+ if ((LastSettings->DataBits == 6) || (LastSettings->DataBits == 7) || (LastSettings->DataBits == 8)) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ }
+
+ //
+ // set the DevReq.Value for the usb control transfer to the correct value
+ // based on the seleceted number of data bits if there is an invalid number of
+ // data bits requested return EFI_INVALID_PARAMETER
+ //
+ if (((DataBits < 5 ) || (DataBits > 8)) && (DataBits != 0)) {
+ return EFI_INVALID_PARAMETER;
+ }
+ if (DataBits == 0) {
+ //
+ // use the value of LastDataBits
+ //
+ DevReq.Value = SET_DATA_BITS (LastSettings->DataBits);
+ } else {
+ //
+ // use the value of DataBits
+ //
+ DevReq.Value = SET_DATA_BITS (DataBits);
+ }
+
+ //
+ // Set Parity
+ //
+ if (Parity == DefaultParity) {
+ Parity = LastSettings->Parity;
+ }
+
+ if (Parity == NoParity) {
+ DevReq.Value |= SET_PARITY_NONE;
+ } else if (Parity == EvenParity) {
+ DevReq.Value |= SET_PARITY_EVEN;
+ } else if (Parity == OddParity){
+ DevReq.Value |= SET_PARITY_ODD;
+ } else if (Parity == MarkParity) {
+ DevReq.Value |= SET_PARITY_MARK;
+ } else if (Parity == SpaceParity) {
+ DevReq.Value |= SET_PARITY_SPACE;
+ }
+
+ //
+ // Set Stop Bits
+ //
+ if (StopBits == DefaultStopBits) {
+ StopBits = LastSettings->StopBits;
+ }
+
+ if (StopBits == OneStopBit) {
+ DevReq.Value |= SET_STOP_BITS_1;
+ } else if (StopBits == OneFiveStopBits) {
+ DevReq.Value |= SET_STOP_BITS_15;
+ } else if (StopBits == TwoStopBits) {
+ DevReq.Value |= SET_STOP_BITS_2;
+ }
+
+ //
+ // set the rest of the DevReq parameters and perform the usb control transfer
+ // to set the data bits on the device
+ //
+ DevReq.Request = FTDI_COMMAND_SET_DATA;
+ DevReq.RequestType = USB_REQ_TYPE_VENDOR;
+ DevReq.Index = FTDI_PORT_IDENTIFIER;
+ DevReq.Length = 0; // indicates that there is no data phase in this request
+
+ Status = UsbIo->UsbControlTransfer (
+ UsbIo,
+ &DevReq,
+ EfiUsbDataOut,
+ WDR_SHORT_TIMEOUT,
+ &ConfigurationValue,
+ 1,
+ &ReturnValue
+ );
+ if (EFI_ERROR (Status)) {
+ goto StatusError;
+ }
+ return Status;
+
+StatusError:
+ if ((Status != EFI_INVALID_PARAMETER) || (Status != EFI_DEVICE_ERROR)) {
+ return EFI_DEVICE_ERROR;
+ } else {
+ return Status;
+ }
+}
+
+/**
+ Internal function that sets the baudrate on the Usb Serial Device.
+
+ @param UsbIo[in] Usb Io Protocol instance pointer
+ @param BaudRate[in] The baudrate value to be set on the device.
+ If this value is 0 the value of LastBaudRate
+ will be used instead
+ @param LastBaudRate[in] The baud rate value that was previously set
+ on the Usb Serial Device
+
+ @retval EFI_SUCCESS The baudrate was set succesfully
+ @retval EFI_INVALID_PARAMETER An invalid baudrate was used
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly and
+ the baudrate was unable to be set
+
+**/
+EFI_STATUS
+EFIAPI
+SetBaudRateInternal (
+ IN EFI_USB_IO_PROTOCOL *UsbIo,
+ IN UINT64 BaudRate,
+ IN UINT64 LastBaudRate
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_DEVICE_REQUEST DevReq;
+ UINT32 ReturnValue;
+ UINT8 ConfigurationValue;
+ UINT16 EncodedBaudRate;
+ EFI_TPL Tpl;
+
+ Tpl = gBS->RaiseTPL(TPL_NOTIFY);
+
+ //
+ // set the value of DevReq.Value based on the value of BaudRate
+ // if 0 is selected as baud rate use the value of LastBaudRate
+ //
+ if (BaudRate == 0) {
+ Status = EncodeBaudRateForFtdi (LastBaudRate, &EncodedBaudRate);
+ if (EFI_ERROR (Status)) {
+ gBS->RestoreTPL (Tpl);
+ //
+ // EncodeBaudRateForFtdi returns EFI_INVALID_PARAMETER when not
+ // succesfull
+ //
+ return Status;
+ }
+ DevReq.Value = EncodedBaudRate;
+ } else {
+ Status = EncodeBaudRateForFtdi (BaudRate, &EncodedBaudRate);
+ if (EFI_ERROR (Status)) {
+ gBS->RestoreTPL (Tpl);
+ //
+ // EncodeBaudRateForFtdi returns EFI_INVALID_PARAMETER when not
+ // successfull
+ //
+ return Status;
+ }
+ DevReq.Value = EncodedBaudRate;
+ }
+
+ //
+ // set the remaining parameters of DevReq and perform the usb control transfer
+ // to set the device
+ //
+ DevReq.Request = FTDI_COMMAND_SET_BAUDRATE;
+ DevReq.RequestType = USB_REQ_TYPE_VENDOR;
+ DevReq.Index = FTDI_PORT_IDENTIFIER;
+ DevReq.Length = 0; // indicates that there is no data phase in this request
+
+ Status = UsbIo->UsbControlTransfer (
+ UsbIo,
+ &DevReq,
+ EfiUsbDataOut,
+ WDR_SHORT_TIMEOUT,
+ &ConfigurationValue,
+ 1,
+ &ReturnValue
+ );
+ if (EFI_ERROR (Status)) {
+ goto StatusError;
+ }
+ gBS->RestoreTPL (Tpl);
+ return Status;
+
+StatusError:
+ gBS->RestoreTPL (Tpl);
+ if ((Status != EFI_INVALID_PARAMETER) || (Status != EFI_DEVICE_ERROR)) {
+ return EFI_DEVICE_ERROR;
+ } else {
+ return Status;
+ }
+}
+
+/**
+ Sets the baud rate, receive FIFO depth, transmit/receice time out, parity,
+ data bits, and stop bits on a serial device.
+
+ @param UsbSerialDevice[in] Pointer to the current instance of the USB Serial
+ Device.
+ @param BaudRate[in] The requested baud rate. A BaudRate value of 0
+ will use the device's default interface speed.
+ @param ReveiveFifoDepth[in] The requested depth of the FIFO on the receive
+ side of the serial interface. A ReceiveFifoDepth
+ value of 0 will use the device's default FIFO
+ depth.
+ @param Timeout[in] The requested time out for a single character in
+ microseconds.This timeout applies to both the
+ transmit and receive side of the interface.A
+ Timeout value of 0 will use the device's default
+ time out value.
+ @param Parity[in] The type of parity to use on this serial device.
+ A Parity value of DefaultParity will use the
+ device's default parity value.
+ @param DataBits[in] The number of data bits to use on the serial
+ device. A DataBits value of 0 will use the
+ device's default data bit setting.
+ @param StopBits[in] The number of stop bits to use on this serial
+ device. A StopBits value of DefaultStopBits will
+ use the device's default number of stop bits.
+
+ @retval EFI_SUCCESS The attributes were set
+ @retval EFI_DEVICE_ERROR The attributes were not able to be set
+
+**/
+EFI_STATUS
+EFIAPI
+SetAttributesInternal (
+ IN USB_SER_DEV *UsbSerialDevice,
+ IN UINT64 BaudRate,
+ IN UINT32 ReceiveFifoDepth,
+ IN UINT32 Timeout,
+ IN EFI_PARITY_TYPE Parity,
+ IN UINT8 DataBits,
+ IN EFI_STOP_BITS_TYPE StopBits
+ )
+{
+ EFI_STATUS Status;
+ EFI_TPL Tpl;
+ UART_DEVICE_PATH *Uart;
+ EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;
+
+ Status = EFI_UNSUPPORTED;
+ Tpl = gBS->RaiseTPL(TPL_NOTIFY);
+ Uart = NULL;
+
+ //
+ // check for invalid combinations of parameters
+ //
+ if (((DataBits >= 6) && (DataBits <= 8)) && (StopBits == OneFiveStopBits)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // set data bits, parity and stop bits
+ //
+ Status = SetDataInternal (
+ UsbSerialDevice->UsbIo,
+ DataBits,
+ Parity,
+ StopBits,
+ &(UsbSerialDevice->LastSettings)
+ );
+ if (EFI_ERROR (Status)) {
+ goto StatusError;
+ }
+ //
+ // set baudrate
+ //
+ Status = SetBaudRateInternal (
+ UsbSerialDevice->UsbIo,
+ BaudRate,
+ UsbSerialDevice->LastSettings.BaudRate
+ );
+ if (EFI_ERROR (Status)){
+ goto StatusError;
+ }
+
+ //
+ // update the values of UsbSerialDevice->LastSettings and UsbSerialDevice->SerialIo.Mode
+ //
+ if (BaudRate == 0) {
+ UsbSerialDevice->LastSettings.BaudRate = UsbSerialDevice->LastSettings.BaudRate;
+ UsbSerialDevice->SerialIo.Mode->BaudRate = UsbSerialDevice->LastSettings.BaudRate;
+ } else {
+ UsbSerialDevice->LastSettings.BaudRate = BaudRate;
+ UsbSerialDevice->SerialIo.Mode->BaudRate = BaudRate;
+ }
+
+ UsbSerialDevice->LastSettings.Timeout = FTDI_TIMEOUT;
+ UsbSerialDevice->LastSettings.ReceiveFifoDepth = FTDI_MAX_RECEIVE_FIFO_DEPTH;
+
+ if (Parity == DefaultParity) {
+ UsbSerialDevice->LastSettings.Parity = UsbSerialDevice->LastSettings.Parity;
+ UsbSerialDevice->SerialIo.Mode->Parity = UsbSerialDevice->LastSettings.Parity;
+ } else {
+ UsbSerialDevice->LastSettings.Parity = Parity;
+ UsbSerialDevice->SerialIo.Mode->Parity = Parity;
+ }
+ if (DataBits == 0) {
+ UsbSerialDevice->LastSettings.DataBits = UsbSerialDevice->LastSettings.DataBits;
+ UsbSerialDevice->SerialIo.Mode->DataBits = UsbSerialDevice->LastSettings.DataBits;
+ } else {
+ UsbSerialDevice->LastSettings.DataBits = DataBits;
+ UsbSerialDevice->SerialIo.Mode->DataBits = DataBits;
+ }
+ if (StopBits == DefaultStopBits) {
+ UsbSerialDevice->LastSettings.StopBits = UsbSerialDevice->LastSettings.StopBits;
+ UsbSerialDevice->SerialIo.Mode->StopBits = UsbSerialDevice->LastSettings.StopBits;
+ } else {
+ UsbSerialDevice->LastSettings.StopBits = StopBits;
+ UsbSerialDevice->SerialIo.Mode->StopBits = StopBits;
+ }
+
+ //
+ // See if the device path node has changed
+ //
+ if (UsbSerialDevice->UartDevicePath.BaudRate == BaudRate &&
+ UsbSerialDevice->UartDevicePath.DataBits == DataBits &&
+ UsbSerialDevice->UartDevicePath.StopBits == StopBits &&
+ UsbSerialDevice->UartDevicePath.Parity == Parity
+ ) {
+ gBS->RestoreTPL (Tpl);
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Update the device path
+ //
+ UsbSerialDevice->UartDevicePath.BaudRate = BaudRate;
+ UsbSerialDevice->UartDevicePath.DataBits = DataBits;
+ UsbSerialDevice->UartDevicePath.StopBits = (UINT8) StopBits;
+ UsbSerialDevice->UartDevicePath.Parity = (UINT8) Parity;
+
+ Status = EFI_SUCCESS;
+ if (UsbSerialDevice->ControllerHandle != NULL) {
+ RemainingDevicePath = UsbSerialDevice->DevicePath;
+ while (!IsDevicePathEnd (RemainingDevicePath)) {
+ Uart = (UART_DEVICE_PATH *) NextDevicePathNode (RemainingDevicePath);
+ if (Uart->Header.Type == MESSAGING_DEVICE_PATH &&
+ Uart->Header.SubType == MSG_UART_DP &&
+ sizeof (UART_DEVICE_PATH) == DevicePathNodeLength ((EFI_DEVICE_PATH *) Uart)) {
+ Uart->BaudRate = BaudRate;
+ Uart->DataBits = DataBits;
+ Uart->StopBits = (UINT8)StopBits;
+ Uart->Parity = (UINT8) Parity;
+ break;
+ }
+ RemainingDevicePath = NextDevicePathNode (RemainingDevicePath);
+ }
+ }
+
+ gBS->RestoreTPL (Tpl);
+ return Status;
+
+StatusError:
+ gBS->RestoreTPL (Tpl);
+ if ((Status != EFI_INVALID_PARAMETER) || (Status != EFI_DEVICE_ERROR)) {
+ return EFI_DEVICE_ERROR;
+ } else {
+ return Status;
+ }
+}
+
+/**
+ Internal function that performs a Usb Control Transfer to set the flow control
+ on the Usb Serial Device.
+
+ @param UsbIo[in] Usb Io Protocol instance pointer
+ @param FlowControlEnable[in] Data on the Enable/Disable status of Flow
+ Control on the Usb Serial Device
+
+ @retval EFI_SUCCESS The flow control was set on the Usb Serial
+ device
+ @retval EFI_INVALID_PARAMETER An invalid flow control value was used
+ @retval EFI_EFI_UNSUPPORTED The operation is not supported
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly
+
+**/
+EFI_STATUS
+EFIAPI
+SetFlowControlInternal (
+ IN EFI_USB_IO_PROTOCOL *UsbIo,
+ IN BOOLEAN FlowControlEnable
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_DEVICE_REQUEST DevReq;
+ UINT32 ReturnValue;
+ UINT8 ConfigurationValue;
+
+ //
+ // set DevReq.Value based on the value of FlowControlEnable
+ //
+ if (!FlowControlEnable) {
+ DevReq.Value = NO_FLOW_CTRL;
+ }
+ if (FlowControlEnable) {
+ DevReq.Value = XON_XOFF_CTRL;
+ }
+ //
+ // set the remaining DevReq parameters and perform the usb control transfer to
+ // set the flow control on the device
+ //
+ DevReq.Request = FTDI_COMMAND_SET_FLOW_CTRL;
+ DevReq.RequestType = USB_REQ_TYPE_VENDOR;
+ DevReq.Index = FTDI_PORT_IDENTIFIER;
+ DevReq.Length = 0; // indicates that this transfer has no data phase
+ Status = UsbIo->UsbControlTransfer (
+ UsbIo,
+ &DevReq,
+ EfiUsbDataOut,
+ WDR_TIMEOUT,
+ &ConfigurationValue,
+ 1,
+ &ReturnValue
+ );
+ if (EFI_ERROR (Status)) {
+ goto StatusError;
+ }
+
+ return Status;
+
+StatusError:
+ if ((Status != EFI_INVALID_PARAMETER) ||
+ (Status != EFI_DEVICE_ERROR) ||
+ (Status != EFI_UNSUPPORTED) ) {
+ return EFI_DEVICE_ERROR;
+ } else {
+ return Status;
+ }
+}
+
+/**
+ Internal function that performs a Usb Control Transfer to set the Dtr value on
+ the Usb Serial Device.
+
+ @param UsbIo[in] Usb Io Protocol instance pointer
+ @param DtrEnable[in] Data on the Enable/Disable status of the
+ Dtr for the Usb Serial Device
+
+ @retval EFI_SUCCESS The Dtr value was set on the Usb Serial
+ Device
+ @retval EFI_INVALID_PARAMETER An invalid Dtr value was used
+ @retval EFI_UNSUPPORTED The operation is not supported
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly
+
+**/
+EFI_STATUS
+EFIAPI
+SetDtrInternal (
+ IN EFI_USB_IO_PROTOCOL *UsbIo,
+ IN BOOLEAN DtrEnable
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_DEVICE_REQUEST DevReq;
+ UINT32 ReturnValue;
+ UINT8 ConfigurationValue;
+
+ //
+ // set the value of DevReq.Value based on the value of DtrEnable
+ //
+ if (!DtrEnable) {
+ DevReq.Value = SET_DTR_LOW;
+ }
+ if (DtrEnable) {
+ DevReq.Value = SET_DTR_HIGH;
+ }
+ //
+ // set the remaining attributes of DevReq and perform the usb control transfer
+ // to set the device
+ //
+ DevReq.Request = FTDI_COMMAND_MODEM_CTRL;
+ DevReq.RequestType = USB_REQ_TYPE_VENDOR;
+ DevReq.Index = FTDI_PORT_IDENTIFIER;
+ DevReq.Length = 0; // indicates that there is no data phase in this transfer
+
+ Status = UsbIo->UsbControlTransfer (
+ UsbIo,
+ &DevReq,
+ EfiUsbDataOut,
+ WDR_TIMEOUT,
+ &ConfigurationValue,
+ 1,
+ &ReturnValue
+ );
+ if (EFI_ERROR (Status)) {
+ goto StatusError;
+ }
+ return Status;
+
+StatusError:
+ if ((Status != EFI_INVALID_PARAMETER) ||
+ (Status != EFI_DEVICE_ERROR) ||
+ (Status != EFI_UNSUPPORTED) ) {
+ return EFI_DEVICE_ERROR;
+ } else {
+ return Status;
+ }
+}
+
+/**
+ Internal function that performs a Usb Control Transfer to set the Dtr value on
+ the Usb Serial Device.
+
+ @param UsbIo[in] Usb Io Protocol instance pointer
+ @param RtsEnable[in] Data on the Enable/Disable status of the
+ Rts for the Usb Serial Device
+
+ @retval EFI_SUCCESS The Rts value was set on the Usb Serial
+ Device
+ @retval EFI_INVALID_PARAMETER An invalid Rts value was used
+ @retval EFI_UNSUPPORTED The operation is not supported
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly
+
+**/
+EFI_STATUS
+EFIAPI
+SetRtsInternal (
+ IN EFI_USB_IO_PROTOCOL *UsbIo,
+ IN BOOLEAN RtsEnable
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_DEVICE_REQUEST DevReq;
+ UINT32 ReturnValue;
+ UINT8 ConfigurationValue;
+
+ //
+ // set DevReq.Value based on the value of RtsEnable
+ //
+ if (!RtsEnable) {
+ DevReq.Value = SET_RTS_LOW;
+ }
+ if (RtsEnable) {
+ DevReq.Value = SET_RTS_HIGH;
+ }
+
+ //
+ // set the remaining parameters of DevReq and perform the usb control transfer
+ // to set the values on the device
+ //
+ DevReq.Request = FTDI_COMMAND_MODEM_CTRL;
+ DevReq.RequestType = USB_REQ_TYPE_VENDOR;
+ DevReq.Index = FTDI_PORT_IDENTIFIER;
+ DevReq.Length = 0; // indicates that there is no data phase in this request
+
+ Status = UsbIo->UsbControlTransfer (
+ UsbIo,
+ &DevReq,
+ EfiUsbDataOut,
+ WDR_TIMEOUT,
+ &ConfigurationValue,
+ 1,
+ &ReturnValue
+ );
+ if (EFI_ERROR (Status)) {
+ goto StatusError;
+ }
+
+ return Status;
+
+StatusError:
+ if ((Status != EFI_INVALID_PARAMETER) ||
+ (Status != EFI_DEVICE_ERROR) ||
+ (Status != EFI_UNSUPPORTED) ) {
+ return EFI_DEVICE_ERROR;
+ } else {
+ return Status;
+ }
+}
+
+/**
+ Internal function that checks for valid control values and sets the control
+ bits on the Usb Serial Device.
+
+ @param UsbSerialDevice[in] Handle to the Usb Serial Device whose
+ control bits are being set
+ @param Control[in] The control value passed to the function
+ that contains the values of the control
+ bits that are being set
+
+ @retval EFI_SUCCESS The control bits were set on the Usb Serial
+ Device
+ @retval EFI_INVALID_PARAMETER An invalid control value was encountered
+ @retval EFI_EFI_UNSUPPORTED The operation is not supported
+ @retval EFI_DEVICE_ERROR The device is not functioning correctly
+
+**/
+EFI_STATUS
+EFIAPI
+SetControlBitsInternal (
+ IN USB_SER_DEV *UsbSerialDevice,
+ IN CONTROL_BITS *Control
+ )
+{
+ EFI_STATUS Status;
+ UART_FLOW_CONTROL_DEVICE_PATH *FlowControl;
+ EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;
+
+ //
+ // check for invalid control parameters hardware and software loopback enabled
+ // must always be set to FALSE
+ //
+ Control->HardwareLoopBack = FALSE;
+ Control->SoftwareLoopBack = FALSE;
+
+ //
+ // set hardware flow control
+ //
+ Status = SetFlowControlInternal (
+ UsbSerialDevice->UsbIo,
+ Control->HardwareFlowControl
+ );
+ if (EFI_ERROR (Status)) {
+ goto StatusError;
+ }
+
+ //
+ // set Dtr state
+ //
+ Status = SetDtrInternal (UsbSerialDevice->UsbIo, Control->DtrState);
+ if (EFI_ERROR (Status)) {
+ goto StatusError;
+ }
+
+ //
+ // set Rts state
+ //
+ Status = SetRtsInternal (UsbSerialDevice->UsbIo, Control->RtsState);
+ if (EFI_ERROR (Status)){
+ goto StatusError;
+ }
+
+ //
+ // update the remaining control values for UsbSerialDevice->ControlValues
+ //
+ UsbSerialDevice->ControlValues.DtrState = Control->DtrState;
+ UsbSerialDevice->ControlValues.RtsState = Control->RtsState;
+ UsbSerialDevice->ControlValues.HardwareFlowControl = Control->HardwareFlowControl;
+ UsbSerialDevice->ControlValues.HardwareLoopBack = FALSE;
+ UsbSerialDevice->ControlValues.SoftwareLoopBack = FALSE;
+
+ Status = EFI_SUCCESS;
+ //
+ // Update the device path to have the correct flow control values
+ //
+ if (UsbSerialDevice->ControllerHandle != NULL) {
+ RemainingDevicePath = UsbSerialDevice->DevicePath;
+ while (!IsDevicePathEnd (RemainingDevicePath)) {
+ FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (RemainingDevicePath);
+ if (FlowControl->Header.Type == MESSAGING_DEVICE_PATH &&
+ FlowControl->Header.SubType == MSG_VENDOR_DP &&
+ sizeof (UART_FLOW_CONTROL_DEVICE_PATH) == DevicePathNodeLength ((EFI_DEVICE_PATH *) FlowControl)){
+ if (UsbSerialDevice->ControlValues.HardwareFlowControl == TRUE) {
+ FlowControl->FlowControlMap = UART_FLOW_CONTROL_HARDWARE;
+ } else if (UsbSerialDevice->ControlValues.HardwareFlowControl == FALSE) {
+ FlowControl->FlowControlMap = 0;
+ }
+ break;
+ }
+ RemainingDevicePath = NextDevicePathNode (RemainingDevicePath);
+ }
+ }
+
+ return Status;
+
+StatusError:
+ if ((Status != EFI_INVALID_PARAMETER) ||
+ (Status != EFI_DEVICE_ERROR) ||
+ (Status != EFI_UNSUPPORTED) ) {
+ return EFI_DEVICE_ERROR;
+ } else {
+ return Status;
+ }
+}
+
+/**
+ Internal function that calculates the Control value used by GetControlBits()
+ based on the status and control values of the Usb Serial Device.
+
+ @param UsbSerialDevice[in] Handle to the Usb Serial Devie whose status
+ and control values are being used to set
+ Control
+ @param Control[out] On output the formated value of Control
+ that has been calculated based on the
+ control and status values of the Usb Serial
+ Device
+
+ @retval EFI_SUCCESS The value of Control was successfully
+ calculated
+
+**/
+EFI_STATUS
+EFIAPI
+GetControlBitsInternal (
+ IN USB_SER_DEV *UsbSerialDevice,
+ OUT UINT32 *Control
+ )
+{
+ *Control = 0;
+
+ //
+ // Check the values of UsbSerialDevice->Status Values and modify control
+ // accordingly these values correspond to the modem status register
+ //
+ if (UsbSerialDevice->StatusValues.CtsState) {
+ *Control |= EFI_SERIAL_CLEAR_TO_SEND;
+ }
+ if (UsbSerialDevice->StatusValues.DsrState) {
+ *Control |= EFI_SERIAL_DATA_SET_READY;
+ }
+ if (UsbSerialDevice->StatusValues.RiState) {
+ *Control |= EFI_SERIAL_RING_INDICATE;
+ }
+ if (UsbSerialDevice->StatusValues.SdState) {
+ *Control |= EFI_SERIAL_CARRIER_DETECT;
+ }
+
+ //
+ // check the values of UsbSerialDevice->ControlValues and modify control
+ // accordingly these values correspond to the values of the Modem Control
+ // Register
+ //
+ if (UsbSerialDevice->ControlValues.DtrState) {
+ *Control |= EFI_SERIAL_DATA_TERMINAL_READY;
+ }
+ if (UsbSerialDevice->ControlValues.RtsState) {
+ *Control |= EFI_SERIAL_REQUEST_TO_SEND;
+ }
+ if (UsbSerialDevice->ControlValues.HardwareLoopBack) {
+ *Control |= EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE;
+ }
+ if (UsbSerialDevice->ControlValues.HardwareFlowControl) {
+ *Control |= EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;
+ }
+ //
+ // check if the buffer is empty since only one is being used if it is empty
+ // set both the receive and transmit buffers to empty
+ //
+ if (UsbSerialDevice->DataBufferHead == UsbSerialDevice->DataBufferTail) {
+ *Control |= EFI_SERIAL_OUTPUT_BUFFER_EMPTY;
+ *Control |= EFI_SERIAL_INPUT_BUFFER_EMPTY;
+ }
+ //
+ // check for software loopback enable in UsbSerialDevice->ControlValues
+ //
+ if (UsbSerialDevice->ControlValues.SoftwareLoopBack) {
+ *Control |= EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Resets the USB Serial Device
+
+ This function is the internal method for reseting the device and is called by
+ SerialReset()
+
+ @param UsbSerialDevice[in] A pointer to the USB Serial device
+
+ @retval EFI_SUCCESS The device was reset
+ @retval EFI_DEVICE_ERROR The device could not be reset
+
+**/
+EFI_STATUS
+EFIAPI
+ResetInternal (
+ IN USB_SER_DEV *UsbSerialDevice
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_DEVICE_REQUEST DevReq;
+ UINT8 ConfigurationValue;
+ UINT32 ReturnValue;
+
+ DevReq.Request = FTDI_COMMAND_RESET_PORT;
+ DevReq.RequestType = USB_REQ_TYPE_VENDOR;
+ DevReq.Value = RESET_PORT_PURGE_RX;
+ DevReq.Index = FTDI_PORT_IDENTIFIER;
+ DevReq.Length = 0; //indicates that there is not data phase in this request
+
+ Status = UsbSerialDevice->UsbIo->UsbControlTransfer (
+ UsbSerialDevice->UsbIo,
+ &DevReq,
+ EfiUsbDataIn,
+ WDR_TIMEOUT,
+ &ConfigurationValue,
+ 1,
+ &ReturnValue
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ DevReq.Request = FTDI_COMMAND_RESET_PORT;
+ DevReq.RequestType = USB_REQ_TYPE_VENDOR;
+ DevReq.Value = RESET_PORT_PURGE_TX;
+ DevReq.Index = FTDI_PORT_IDENTIFIER;
+ DevReq.Length = 0; //indicates that there is no data phase in this request
+
+ Status = UsbSerialDevice->UsbIo->UsbControlTransfer (
+ UsbSerialDevice->UsbIo,
+ &DevReq,
+ EfiUsbDataIn,
+ WDR_TIMEOUT,
+ &ConfigurationValue,
+ 1,
+ &ReturnValue
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+ return Status;
+}
+
+/**
+ Entrypoint of USB Serial Driver.
+
+ This function is the entrypoint of USB Serial Driver. It installs
+ Driver Binding Protocols together with Component Name Protocols.
+
+ @param ImageHandle[in] The firmware allocated handle for the EFI image.
+ @param SystemTable[in] A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+
+**/
+EFI_STATUS
+EFIAPI
+FtdiUsbSerialEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ Status = EfiLibInstallDriverBindingComponentName2 (
+ ImageHandle,
+ SystemTable,
+ &gUsbSerialDriverBinding,
+ ImageHandle,
+ &gUsbSerialComponentName,
+ &gUsbSerialComponentName2
+ );
+ ASSERT_EFI_ERROR (Status);
+ return EFI_SUCCESS;
+}
+
+/**
+ Unload function for the Usb Serial Driver.
+
+ @param ImageHandle[in] The allocated handle for the EFI image
+
+ @retval EFI_SUCCESS The driver was unloaded successfully
+**/
+EFI_STATUS
+EFIAPI
+FtdiUsbSerialUnload (
+ IN EFI_HANDLE ImageHandle
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE *HandleBuffer;
+ UINTN HandleCount;
+ UINTN Index;
+
+ //
+ // Retrieve all handles in the handle database
+ //
+ Status = gBS->LocateHandleBuffer (
+ AllHandles,
+ NULL,
+ NULL,
+ &HandleCount,
+ &HandleBuffer
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Disconnect the driver from the handles in the handle database
+ //
+ for (Index = 0; Index < HandleCount; Index++) {
+ Status = gBS->DisconnectController (
+ HandleBuffer[Index],
+ gImageHandle,
+ NULL
+ );
+ }
+
+ //
+ // Free the handle array
+ //
+ FreePool (HandleBuffer);
+
+ //
+ // Uninstall protocols installed by the driver in its entrypoint
+ //
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ ImageHandle,
+ &gEfiDriverBindingProtocolGuid,
+ &gUsbSerialDriverBinding,
+ &gEfiComponentNameProtocolGuid,
+ &gUsbSerialComponentName,
+ &gEfiComponentName2ProtocolGuid,
+ &gUsbSerialComponentName2,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Check whether USB Serial driver supports this device.
+
+ @param This[in] The USB Serial driver binding protocol.
+ @param Controller[in] The controller handle to check.
+ @param RemainingDevicePath[in] The remaining device path.
+
+ @retval EFI_SUCCESS The driver supports this controller.
+ @retval other This device isn't supported.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_IO_PROTOCOL *UsbIo;
+ UART_DEVICE_PATH *UartNode;
+ UART_FLOW_CONTROL_DEVICE_PATH *FlowControlNode;
+ UINTN Index;
+ UINTN EntryCount;
+ EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;
+ BOOLEAN HasFlowControl;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
+
+ if (RemainingDevicePath != NULL) {
+ if (!IsDevicePathEnd (RemainingDevicePath)) {
+ Status = EFI_UNSUPPORTED;
+ UartNode = (UART_DEVICE_PATH *) NextDevicePathNode (RemainingDevicePath);
+ if (UartNode->Header.Type != MESSAGING_DEVICE_PATH ||
+ UartNode->Header.SubType != MSG_UART_DP ||
+ sizeof (UART_DEVICE_PATH) != DevicePathNodeLength ((EFI_DEVICE_PATH *) UartNode)) {
+ goto Error;
+ }
+ FlowControlNode = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (UartNode);
+ if ((ReadUnaligned32 (&FlowControlNode->FlowControlMap) & ~UART_FLOW_CONTROL_HARDWARE) != 0) {
+ goto Error;
+ }
+ }
+ }
+
+ //
+ // Check if USB I/O Protocol is attached on the controller handle.
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ (VOID **) &UsbIo,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (Status == EFI_ALREADY_STARTED) {
+ if (RemainingDevicePath == NULL || IsDevicePathEnd (RemainingDevicePath)) {
+ return EFI_SUCCESS;
+ }
+ Status = gBS->OpenProtocolInformation (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ &OpenInfoBuffer,
+ &EntryCount
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ for (Index = 0; Index < EntryCount; Index++) {
+ if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {
+ Status = gBS->OpenProtocol (
+ OpenInfoBuffer[Index].ControllerHandle,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &DevicePath,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (!EFI_ERROR (Status)) {
+ HasFlowControl = ContainsFlowControl (RemainingDevicePath);
+ if (HasFlowControl ^ ContainsFlowControl (DevicePath)) {
+ Status = EFI_UNSUPPORTED;
+ }
+ }
+ break;
+ }
+ }
+ FreePool (OpenInfoBuffer);
+ return Status;
+ }
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &ParentDevicePath,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (Status == EFI_ALREADY_STARTED) {
+ return EFI_SUCCESS;
+ }
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Use the USB I/O Protocol interface to check whether Controller is
+ // a USB Serial device that can be managed by this driver.
+ //
+ Status = EFI_SUCCESS;
+
+ if (!IsUsbSerial (UsbIo)) {
+ Status = EFI_UNSUPPORTED;
+ goto Error;
+ }
+
+Error:
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ return Status;
+}
+
+/**
+ Starts the USB Serial device with this driver.
+
+ This function produces initializes the USB Serial device and
+ produces the Serial IO Protocol.
+
+ @param This[in] The USB Serial driver binding instance.
+ @param Controller[in] Handle of device to bind driver to.
+ @param RemainingDevicePath[in] Optional parameter use to pick a specific
+ child device to start.
+
+ @retval EFI_SUCCESS The controller is controlled by the usb USB
+ Serial driver.
+ @retval EFI_UNSUPPORTED No interrupt endpoint can be found.
+ @retval Other This controller cannot be started.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EFI_USB_IO_PROTOCOL *UsbIo;
+ USB_SER_DEV *UsbSerialDevice;
+ UINT8 EndpointNumber;
+ EFI_USB_ENDPOINT_DESCRIPTOR EndpointDescriptor;
+ UINT8 Index;
+ BOOLEAN FoundIn;
+ BOOLEAN FoundOut;
+ EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
+ EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;
+ UINTN EntryCount;
+ EFI_SERIAL_IO_PROTOCOL *SerialIo;
+ UART_DEVICE_PATH *Uart;
+ UART_FLOW_CONTROL_DEVICE_PATH *FlowControl;
+ UINT32 FlowControlMap;
+ UINT32 Control;
+ EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
+
+ UsbSerialDevice = AllocateZeroPool (sizeof (USB_SER_DEV));
+ ASSERT (UsbSerialDevice != NULL);
+
+ //
+ // Get the Parent Device path
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &ParentDevicePath,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {
+ goto ErrorExit1;
+ }
+
+ //
+ // Open USB I/O Protocol
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ (VOID **) &UsbIo,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {
+ goto ErrorExit1;
+ }
+
+ if (Status == EFI_ALREADY_STARTED) {
+ if (RemainingDevicePath == NULL || IsDevicePathEnd (RemainingDevicePath)) {
+ FreePool (UsbSerialDevice);
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Check to see if a child handle exists
+ //
+ Status = gBS->OpenProtocolInformation (
+ Controller,
+ &gEfiSerialIoProtocolGuid,
+ &OpenInfoBuffer,
+ &EntryCount
+ );
+ if (EFI_ERROR (Status)) {
+ goto ErrorExit1;
+ }
+
+ Status = EFI_ALREADY_STARTED;
+ for (Index = 0; Index < EntryCount; Index++) {
+ if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {
+ Status = gBS->OpenProtocol (
+ OpenInfoBuffer[Index].ControllerHandle,
+ &gEfiSerialIoProtocolGuid,
+ (VOID **) &SerialIo,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ }
+ if (!EFI_ERROR (Status)) {
+ Uart = (UART_DEVICE_PATH *) RemainingDevicePath;
+ Status = SerialIo->SetAttributes (
+ SerialIo,
+ Uart->BaudRate,
+ SerialIo->Mode->ReceiveFifoDepth,
+ SerialIo->Mode->Timeout,
+ (EFI_PARITY_TYPE) Uart->Parity,
+ Uart->DataBits,
+ (EFI_STOP_BITS_TYPE) Uart->StopBits
+ );
+ FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (Uart);
+ if (!EFI_ERROR (Status) && IsUartFlowControlNode (FlowControl)) {
+ Status = SerialIo->GetControl (
+ SerialIo,
+ &Control
+ );
+ if (!EFI_ERROR (Status)) {
+ if (ReadUnaligned32 (&FlowControl->FlowControlMap) == UART_FLOW_CONTROL_HARDWARE) {
+ Control |= EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;
+ } else {
+ Control &= ~EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;
+ }
+ //
+ // Clear bits that are not allowed to be passed to SetControl
+ //
+ Control &= (EFI_SERIAL_REQUEST_TO_SEND |
+ EFI_SERIAL_DATA_TERMINAL_READY |
+ EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE |
+ EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE |
+ EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE);
+ Status = SerialIo->SetControl (SerialIo, Control);
+ }
+ }
+ }
+ break;
+ }
+ }
+ FreePool (OpenInfoBuffer);
+ return Status;
+ }
+
+ if (RemainingDevicePath != NULL) {
+ if (IsDevicePathEnd (RemainingDevicePath)) {
+ return EFI_SUCCESS;
+ }
+ }
+
+ UsbSerialDevice->UsbIo = UsbIo;
+
+ //
+ // Get interface & endpoint descriptor
+ //
+ UsbIo->UsbGetInterfaceDescriptor (
+ UsbIo,
+ &UsbSerialDevice->InterfaceDescriptor
+ );
+
+ EndpointNumber = UsbSerialDevice->InterfaceDescriptor.NumEndpoints;
+
+ //
+ // Traverse endpoints to find the IN and OUT endpoints that will send and
+ // receive data.
+ //
+ FoundIn = FALSE;
+ FoundOut = FALSE;
+ for (Index = 0; Index < EndpointNumber; Index++) {
+
+ Status = UsbIo->UsbGetEndpointDescriptor (
+ UsbIo,
+ Index,
+ &EndpointDescriptor
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (EndpointDescriptor.EndpointAddress == FTDI_ENDPOINT_ADDRESS_OUT) {
+ //
+ // Set the Out endpoint device
+ //
+ CopyMem (
+ &UsbSerialDevice->OutEndpointDescriptor,
+ &EndpointDescriptor,
+ sizeof(EndpointDescriptor)
+ );
+ FoundOut = TRUE;
+ }
+
+ if (EndpointDescriptor.EndpointAddress == FTDI_ENDPOINT_ADDRESS_IN) {
+ //
+ // Set the In endpoint device
+ //
+ CopyMem (
+ &UsbSerialDevice->InEndpointDescriptor,
+ &EndpointDescriptor,
+ sizeof(EndpointDescriptor)
+ );
+ FoundIn = TRUE;
+ }
+ }
+
+ if (!FoundIn || !FoundOut) {
+ //
+ // No interrupt endpoint found, then return unsupported.
+ //
+ Status = EFI_UNSUPPORTED;
+ goto ErrorExit;
+ }
+ //
+ // set the initial values of UsbSerialDevice->LastSettings to the default
+ // values
+ //
+ UsbSerialDevice->LastSettings.BaudRate = 115200;
+ UsbSerialDevice->LastSettings.DataBits = 8;
+ UsbSerialDevice->LastSettings.Parity = NoParity;
+ UsbSerialDevice->LastSettings.ReceiveFifoDepth = FTDI_MAX_RECEIVE_FIFO_DEPTH;
+ UsbSerialDevice->LastSettings.StopBits = OneStopBit;
+ UsbSerialDevice->LastSettings.Timeout = FTDI_TIMEOUT;
+
+ //
+ // set the initial values of UsbSerialDevice->ControlValues
+ //
+ UsbSerialDevice->ControlValues.DtrState = FALSE;
+ UsbSerialDevice->ControlValues.RtsState = FALSE;
+ UsbSerialDevice->ControlValues.HardwareFlowControl = FALSE;
+ UsbSerialDevice->ControlValues.HardwareLoopBack = FALSE;
+ UsbSerialDevice->ControlValues.SoftwareLoopBack = FALSE;
+
+ //
+ // set the values of UsbSerialDevice->UartDevicePath
+ //
+ UsbSerialDevice->UartDevicePath.Header.Type = MESSAGING_DEVICE_PATH;
+ UsbSerialDevice->UartDevicePath.Header.SubType = MSG_UART_DP;
+ UsbSerialDevice->UartDevicePath.Header.Length[0] = (UINT8) (sizeof (UART_DEVICE_PATH));
+ UsbSerialDevice->UartDevicePath.Header.Length[1] = (UINT8) ((sizeof (UART_DEVICE_PATH)) >> 8);
+
+ //
+ // set the values of UsbSerialDevice->FlowControlDevicePath
+ UsbSerialDevice->FlowControlDevicePath.Header.Type = MESSAGING_DEVICE_PATH;
+ UsbSerialDevice->FlowControlDevicePath.Header.SubType = MSG_VENDOR_DP;
+ UsbSerialDevice->FlowControlDevicePath.Header.Length[0] = (UINT8) (sizeof (UART_FLOW_CONTROL_DEVICE_PATH));
+ UsbSerialDevice->FlowControlDevicePath.Header.Length[1] = (UINT8) ((sizeof (UART_FLOW_CONTROL_DEVICE_PATH)) >> 8);
+ UsbSerialDevice->FlowControlDevicePath.FlowControlMap = 0;
+
+ Status = SetAttributesInternal (
+ UsbSerialDevice,
+ UsbSerialDevice->LastSettings.BaudRate,
+ UsbSerialDevice->LastSettings.ReceiveFifoDepth,
+ UsbSerialDevice->LastSettings.Timeout,
+ UsbSerialDevice->LastSettings.Parity,
+ UsbSerialDevice->LastSettings.DataBits,
+ UsbSerialDevice->LastSettings.StopBits
+ );
+
+ ASSERT_EFI_ERROR (Status);
+
+ Status = SetControlBitsInternal (
+ UsbSerialDevice,
+ &(UsbSerialDevice->ControlValues)
+ );
+
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Publish Serial GUID and protocol
+ //
+
+ UsbSerialDevice->Signature = USB_SER_DEV_SIGNATURE;
+ UsbSerialDevice->SerialIo.Reset = SerialReset;
+ UsbSerialDevice->SerialIo.SetControl = SetControlBits;
+ UsbSerialDevice->SerialIo.SetAttributes = SetAttributes;
+ UsbSerialDevice->SerialIo.GetControl = GetControlBits;
+ UsbSerialDevice->SerialIo.Read = ReadSerialIo;
+ UsbSerialDevice->SerialIo.Write = WriteSerialIo;
+
+ //
+ // Set the static Serial IO modes that will display when running
+ // "sermode" within the UEFI shell.
+ //
+
+ UsbSerialDevice->SerialIo.Mode->Timeout = 0;
+ UsbSerialDevice->SerialIo.Mode->BaudRate = 115200;
+ UsbSerialDevice->SerialIo.Mode->DataBits = 8;
+ UsbSerialDevice->SerialIo.Mode->Parity = 1;
+ UsbSerialDevice->SerialIo.Mode->StopBits = 1;
+
+ UsbSerialDevice->ParentDevicePath = ParentDevicePath;
+ UsbSerialDevice->ControllerHandle = NULL;
+ FlowControl = NULL;
+ FlowControlMap = 0;
+
+ //
+ // Allocate space for the receive buffer
+ //
+ UsbSerialDevice->DataBuffer = AllocateZeroPool (SW_FIFO_DEPTH);
+
+ //
+ // Initialize data buffer pointers.
+ // Head==Tail = true means buffer is empty.
+ //
+ UsbSerialDevice->DataBufferHead = 0;
+ UsbSerialDevice->DataBufferTail = 0;
+
+ UsbSerialDevice->ControllerNameTable = NULL;
+ AddUnicodeString2 (
+ "eng",
+ gUsbSerialComponentName.SupportedLanguages,
+ &UsbSerialDevice->ControllerNameTable,
+ L"FTDI USB Serial Adapter",
+ TRUE
+ );
+ AddUnicodeString2 (
+ "en",
+ gUsbSerialComponentName2.SupportedLanguages,
+ &UsbSerialDevice->ControllerNameTable,
+ L"FTDI USB Serial Adapter",
+ FALSE
+ );
+
+ Status = SetInitialStatus (UsbSerialDevice);
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Create a polling loop to check for input
+ //
+
+ gBS->CreateEvent (
+ EVT_TIMER | EVT_NOTIFY_SIGNAL,
+ TPL_CALLBACK,
+ UsbSerialDriverCheckInput,
+ UsbSerialDevice,
+ &(UsbSerialDevice->PollingLoop)
+ );
+ //
+ // add code to set trigger time based on baud rate
+ // setting to 0.5s for now
+ //
+ gBS->SetTimer (
+ UsbSerialDevice->PollingLoop,
+ TimerPeriodic,
+ EFI_TIMER_PERIOD_MILLISECONDS (500)
+ );
+
+ //
+ // Check if the remaining device path is null. If it is not null change the settings
+ // of the device to match those on the device path
+ //
+ if (RemainingDevicePath != NULL) {
+ CopyMem (
+ &UsbSerialDevice->UartDevicePath,
+ RemainingDevicePath,
+ sizeof (UART_DEVICE_PATH)
+ );
+ FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (RemainingDevicePath);
+ if (IsUartFlowControlNode (FlowControl)) {
+ UsbSerialDevice->FlowControlDevicePath.FlowControlMap = ReadUnaligned32 (&FlowControl->FlowControlMap);
+ } else {
+ FlowControl = NULL;
+ }
+ }
+
+ //
+ // Build the device path by appending the UART node to the parent device path
+ //
+ UsbSerialDevice->DevicePath = AppendDevicePathNode (
+ ParentDevicePath,
+ (EFI_DEVICE_PATH_PROTOCOL *) &UsbSerialDevice->UartDevicePath
+ );
+ //
+ // Continue building the device path by appending the flow control node
+ //
+ TempDevicePath = UsbSerialDevice->DevicePath;
+ UsbSerialDevice->DevicePath = AppendDevicePathNode (
+ TempDevicePath,
+ (EFI_DEVICE_PATH_PROTOCOL *) &UsbSerialDevice->FlowControlDevicePath
+ );
+ FreePool (TempDevicePath);
+
+ if (UsbSerialDevice->DevicePath == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto ErrorExit;
+ }
+
+ //
+ // Install protocol interfaces for the device
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &UsbSerialDevice->ControllerHandle,
+ &gEfiDevicePathProtocolGuid,
+ UsbSerialDevice->DevicePath,
+ &gEfiSerialIoProtocolGuid,
+ &UsbSerialDevice->SerialIo,
+ NULL
+ );
+ if (EFI_ERROR (Status)){
+ goto ErrorExit;
+ }
+
+ //
+ // Open for child device
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ (VOID **) &UsbIo,
+ This->DriverBindingHandle,
+ UsbSerialDevice->ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+ );
+
+ UsbSerialDevice->Shutdown = FALSE;
+
+ return EFI_SUCCESS;
+
+ErrorExit:
+ //
+ // Error handler
+ //
+
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ Controller,
+ &gEfiSerialIoProtocolGuid,
+ &UsbSerialDevice->SerialIo,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ goto ErrorExit1;
+ }
+
+ FreePool (UsbSerialDevice->DataBuffer);
+ FreePool (UsbSerialDevice);
+
+ UsbSerialDevice = NULL;
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+
+ErrorExit1:
+ return Status;
+}
+
+/**
+ Stop the USB Serial device handled by this driver.
+
+ @param This[in] The USB Serial driver binding protocol.
+ @param Controller[in] The controller to release.
+ @param NumberOfChildren[in] The number of handles in ChildHandleBuffer.
+ @param ChildHandleBuffer[in] The array of child handle.
+
+ @retval EFI_SUCCESS The device was stopped.
+ @retval EFI_UNSUPPORTED Serial IO Protocol is not installed on
+ Controller.
+ @retval EFI_DEVICE_ERROR The device could not be stopped due to a
+ device error.
+ @retval Others Fail to uninstall protocols attached on the
+ device.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ )
+{
+ EFI_STATUS Status;
+ EFI_SERIAL_IO_PROTOCOL *SerialIo;
+ EFI_USB_IO_PROTOCOL *UsbIo;
+ USB_SER_DEV *UsbSerialDevice;
+ UINTN Index;
+ BOOLEAN AllChildrenStopped;
+
+ Status = EFI_SUCCESS;
+ UsbSerialDevice = NULL;
+
+ if (NumberOfChildren == 0) {
+ //
+ // Close the driver
+ //
+ Status = gBS->CloseProtocol (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ Status = gBS->CloseProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ return Status;
+ }
+
+ AllChildrenStopped = TRUE;
+
+ for (Index = 0; Index < NumberOfChildren ;Index++) {
+ Status = gBS->OpenProtocol (
+ ChildHandleBuffer[Index],
+ &gEfiSerialIoProtocolGuid,
+ (VOID **) &SerialIo,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (Status == EFI_SUCCESS) {//!EFI_ERROR (Status)) {
+ UsbSerialDevice = USB_SER_DEV_FROM_THIS (SerialIo);
+ Status = gBS->CloseProtocol (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ This->DriverBindingHandle,
+ ChildHandleBuffer[Index]
+ );
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ ChildHandleBuffer[Index],
+ &gEfiDevicePathProtocolGuid,
+ UsbSerialDevice->DevicePath,
+ &gEfiSerialIoProtocolGuid,
+ &UsbSerialDevice->SerialIo,
+ NULL
+ );
+
+ if (EFI_ERROR (Status)) {
+ gBS->OpenProtocol (
+ Controller,
+ &gEfiUsbIoProtocolGuid,
+ (VOID **) &UsbIo,
+ This->DriverBindingHandle,
+ ChildHandleBuffer[Index],
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+ );
+ } else {
+ if (UsbSerialDevice->DevicePath != NULL) {
+ gBS->FreePool (UsbSerialDevice->DevicePath);
+ }
+ gBS->SetTimer (
+ UsbSerialDevice->PollingLoop,
+ TimerCancel,
+ 0
+ );
+ gBS->CloseEvent (UsbSerialDevice->PollingLoop);
+ UsbSerialDevice->Shutdown = TRUE;
+ FreeUnicodeStringTable (UsbSerialDevice->ControllerNameTable);
+ FreePool (UsbSerialDevice->DataBuffer);
+ FreePool (UsbSerialDevice);
+ }
+ }
+ if (EFI_ERROR (Status)) {
+ AllChildrenStopped = FALSE;
+ }
+ }
+
+ if (!AllChildrenStopped) {
+ return EFI_DEVICE_ERROR;
+ }
+ return EFI_SUCCESS;
+}
+
+//
+// Serial IO Member Functions
+//
+
+/**
+ Reset the serial device.
+
+ @param This[in] Protocol instance pointer.
+
+ @retval EFI_SUCCESS The device was reset.
+ @retval EFI_DEVICE_ERROR The serial device could not be reset.
+
+**/
+EFI_STATUS
+EFIAPI
+SerialReset (
+ IN EFI_SERIAL_IO_PROTOCOL *This
+ )
+{
+ EFI_STATUS Status;
+ USB_SER_DEV *UsbSerialDevice;
+
+ UsbSerialDevice = USB_SER_DEV_FROM_THIS (This);
+ Status = ResetInternal (UsbSerialDevice);
+ if (EFI_ERROR (Status)){
+ return EFI_DEVICE_ERROR;
+ }
+ return Status;
+}
+
+/**
+ Set the control bits on a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param Control[in] Set the bits of Control that are settable.
+
+ @retval EFI_SUCCESS The new control bits were set on the serial device.
+ @retval EFI_UNSUPPORTED The serial device does not support this operation.
+ @retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
+
+**/
+EFI_STATUS
+EFIAPI
+SetControlBits (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ IN UINT32 Control
+ )
+{
+ EFI_STATUS Status;
+ USB_SER_DEV *UsbSerialDevice;
+ CONTROL_BITS ControlBits;
+
+ UsbSerialDevice = USB_SER_DEV_FROM_THIS (This);
+
+ //
+ // check for invalid control parameters
+ //
+ if ((Control & (~(EFI_SERIAL_REQUEST_TO_SEND |
+ EFI_SERIAL_DATA_TERMINAL_READY |
+ EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE |
+ EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE |
+ EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE))) != 0 ) {
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // check the control parameters and set the correct setting for
+ // the paramerts of ControlBits
+ // both loopback enables are always set to FALSE
+ //
+ ControlBits.HardwareLoopBack = FALSE;
+ ControlBits.SoftwareLoopBack = FALSE;
+ //
+ // check for hardware flow control
+ //
+ if ((Control & EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE) == EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE) {
+ ControlBits.HardwareFlowControl = TRUE;
+ } else {
+ ControlBits.HardwareFlowControl = FALSE;
+ }
+ //
+ // check for DTR enabled
+ //
+ if ((Control & EFI_SERIAL_DATA_TERMINAL_READY) == EFI_SERIAL_DATA_TERMINAL_READY) {
+ ControlBits.DtrState = TRUE;
+ } else {
+ ControlBits.DtrState = FALSE;
+ }
+ //
+ // check for RTS enabled
+ //
+ if ((Control & EFI_SERIAL_REQUEST_TO_SEND) == EFI_SERIAL_REQUEST_TO_SEND) {
+ ControlBits.RtsState = TRUE;
+ } else {
+ ControlBits.RtsState = FALSE;
+ }
+
+ //
+ // set the control values with a call to SetControlBitsInternal()
+ //
+ Status = SetControlBitsInternal (UsbSerialDevice, &ControlBits);
+
+ return Status;
+}
+
+/**
+ calls SetAttributesInternal() to set the baud rate, receive FIFO depth,
+ transmit/receive time out, parity, data buts, and stop bits on a serial
+ device.
+
+ @param This[in] Protocol instance pointer.
+ @param BaudRate[in] The requested baud rate. A BaudRate value of 0
+ will use the device's default interface speed.
+ @param ReveiveFifoDepth[in] The requested depth of the FIFO on the receive
+ side of the serial interface. A ReceiveFifoDepth
+ value of 0 will use the device's default FIFO
+ depth.
+ @param Timeout[in] The requested time out for a single character in
+ microseconds.This timeout applies to both the
+ transmit and receive side of the interface. A
+ Timeout value of 0 will use the device's default
+ time out value.
+ @param Parity[in] The type of parity to use on this serial device.
+ A Parity value of DefaultParity will use the
+ device's default parity value.
+ @param DataBits[in] The number of data bits to use on the serial
+ device. A DataBit vaule of 0 will use the
+ device's default data bit setting.
+ @param StopBits[in] The number of stop bits to use on this serial
+ device. A StopBits value of DefaultStopBits will
+ use the device's default number of stop bits.
+
+ @retval EFI_SUCCESS The attributes were set
+ @retval EFI_DEVICE_ERROR The attributes were not able to be
+
+**/
+EFI_STATUS
+EFIAPI
+SetAttributes (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ IN UINT64 BaudRate,
+ IN UINT32 ReceiveFifoDepth,
+ IN UINT32 Timeout,
+ IN EFI_PARITY_TYPE Parity,
+ IN UINT8 DataBits,
+ IN EFI_STOP_BITS_TYPE StopBits
+ )
+{
+
+ EFI_STATUS Status;
+ USB_SER_DEV *UsbSerialDevice;
+
+ UsbSerialDevice = USB_SER_DEV_FROM_THIS (This);
+
+ Status = SetAttributesInternal (
+ UsbSerialDevice,
+ BaudRate,
+ ReceiveFifoDepth,
+ Timeout,
+ Parity,
+ DataBits,
+ StopBits
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ return Status;
+}
+
+
+/**
+ Retrieves the status of the control bits on a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param Control[out] A pointer to return the current Control signals
+ from the serial device.
+
+ @retval EFI_SUCCESS The control bits were read from the serial
+ device.
+ @retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
+
+**/
+EFI_STATUS
+EFIAPI
+GetControlBits (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ OUT UINT32 *Control
+ )
+{
+ USB_SER_DEV *UsbSerialDevice;
+ EFI_STATUS Status;
+
+ UsbSerialDevice = USB_SER_DEV_FROM_THIS (This);
+
+ *Control = 0;
+
+ Status = GetControlBitsInternal (UsbSerialDevice, Control);
+
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+ return Status;
+}
+
+/**
+ Reads data from a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param BufferSize[in, out] On input, the size of the Buffer. On output,
+ the amount of data returned in Buffer.
+ @param Buffer[out] The buffer to return the data into.
+
+ @retval EFI_SUCCESS The data was read.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_TIMEOUT The data write was stopped due to a timeout.
+
+**/
+EFI_STATUS
+EFIAPI
+ReadSerialIo (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ UINTN Index;
+ UINTN RemainingCallerBufferSize;
+ USB_SER_DEV *UsbSerialDevice;
+ EFI_STATUS Status;
+
+
+ if (*BufferSize == 0) {
+ return EFI_SUCCESS;
+ }
+
+ if (Buffer == NULL) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ Status = EFI_SUCCESS;
+ UsbSerialDevice = USB_SER_DEV_FROM_THIS (This);
+
+ //
+ // Clear out any data that we already have in our internal buffer
+ //
+ for (Index = 0; Index < *BufferSize; Index++) {
+ if (UsbSerialDevice->DataBufferHead == UsbSerialDevice->DataBufferTail) {
+ break;
+ }
+
+ //
+ // Still have characters in the buffer to return
+ //
+ ((UINT8 *)Buffer)[Index] = UsbSerialDevice->DataBuffer[UsbSerialDevice->DataBufferHead];
+ UsbSerialDevice->DataBufferHead = (UsbSerialDevice->DataBufferHead + 1) % SW_FIFO_DEPTH;
+ }
+
+ //
+ // If we haven't filled the caller's buffer using data that we already had on
+ // hand We need to generate an additional USB request to try and fill the
+ // caller's buffer
+ //
+ if (Index != *BufferSize) {
+ RemainingCallerBufferSize = *BufferSize - Index;
+ Status = ReadDataFromUsb (
+ UsbSerialDevice,
+ &RemainingCallerBufferSize,
+ (VOID *)(((CHAR8 *)Buffer) + Index)
+ );
+ if (!EFI_ERROR (Status)) {
+ *BufferSize = RemainingCallerBufferSize + Index;
+ } else {
+ *BufferSize = Index;
+ }
+ }
+
+ if (UsbSerialDevice->DataBufferHead == UsbSerialDevice->DataBufferTail) {
+ //
+ // Data buffer has no data, set the EFI_SERIAL_INPUT_BUFFER_EMPTY flag
+ //
+ UsbSerialDevice->ControlBits |= EFI_SERIAL_INPUT_BUFFER_EMPTY;
+ } else {
+ //
+ // There is some leftover data, clear EFI_SERIAL_INPUT_BUFFER_EMPTY flag
+ //
+ UsbSerialDevice->ControlBits &= ~(EFI_SERIAL_INPUT_BUFFER_EMPTY);
+ }
+ return Status;
+}
+
+/**
+ Writes data to a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param BufferSize[in, out] On input, the size of the Buffer. On output,
+ the amount of data actually written.
+ @param Buffer[in] The buffer of data to write
+
+ @retval EFI_SUCCESS The data was written.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_TIMEOUT The data write was stopped due to a timeout.
+
+**/
+EFI_STATUS
+EFIAPI
+WriteSerialIo (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ USB_SER_DEV *UsbSerialDevice;
+ EFI_TPL Tpl;
+
+ UsbSerialDevice = USB_SER_DEV_FROM_THIS (This);
+
+ if (UsbSerialDevice->Shutdown) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ Tpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ Status = UsbSerialDataTransfer (
+ UsbSerialDevice,
+ EfiUsbDataOut,
+ Buffer,
+ BufferSize,
+ FTDI_TIMEOUT
+ );
+
+ gBS->RestoreTPL (Tpl);
+ if (EFI_ERROR (Status)) {
+ if (Status == EFI_TIMEOUT){
+ return Status;
+ } else {
+ return EFI_DEVICE_ERROR;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
diff --git a/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDriver.h b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDriver.h new file mode 100644 index 0000000000..07f4133ccf --- /dev/null +++ b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDriver.h @@ -0,0 +1,595 @@ +/** @file
+ Header file for USB Serial Driver's Data Structures.
+
+Copyright (c) 2004 - 2013, Intel Corporation. All rights reserved.
+Portions Copyright 2012 Ashley DeSimone
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD
+License which accompanies this distribution. The full text of the license may
+be found at http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _FTDI_USB_SERIAL_DRIVER_H_
+#define _FTDI_USB_SERIAL_DRIVER_H_
+
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/DevicePathLib.h>
+
+#include <Protocol/DevicePath.h>
+#include <Protocol/UsbIo.h>
+#include <Protocol/SerialIo.h>
+
+//
+// US English LangID
+//
+#define USB_US_LANG_ID 0x0409
+
+//
+// Supported Vendor Ids
+//
+#define VID_FTDI 0x0403
+
+//
+// Supported product ids
+//
+#define DID_FTDI_FT232 0x6001
+
+//
+// FTDI Commands
+//
+#define FTDI_COMMAND_RESET_PORT 0
+#define FTDI_COMMAND_MODEM_CTRL 1
+#define FTDI_COMMAND_SET_FLOW_CTRL 2
+#define FTDI_COMMAND_SET_BAUDRATE 3
+#define FTDI_COMMAND_SET_DATA 4
+#define FTDI_COMMAND_GET_MODEM_STATUS 5
+#define FTDI_COMMAND_SET_EVENT_CHAR 6
+#define FTDI_COMMAND_SET_ERROR_CHAR 7
+#define FTDI_COMMAND_SET_LATENCY_TIMER 9
+#define FTDI_COMMAND_GET_LATENCY_TIMER 10
+
+//
+// FTDI_PORT_IDENTIFIER
+// Used in the usb control transfers that issue FTDI commands as the index value.
+//
+#define FTDI_PORT_IDENTIFIER 0x1 // For FTDI USB serial adapter the port
+ // identifier is always 1.
+
+//
+// RESET_PORT
+//
+#define RESET_PORT_RESET 0x0 // Purges RX and TX, clears DTR and RTS sets
+ // flow control to none, disables event
+ // trigger, sets the event char to 0x0d and
+ // does nothing to baudrate or data settings
+#define RESET_PORT_PURGE_RX 0x1
+#define RESET_PORT_PURGE_TX 0x2
+
+//
+// SET_FLOW_CONTROL
+//
+#define NO_FLOW_CTRL 0x0
+#define XON_XOFF_CTRL 0x4
+
+//
+// SET_BAUD_RATE
+// To set baud rate, one must calculate an encoding of the baud rate from
+// UINT32 to UINT16.See EncodeBaudRateForFtdi() for details
+//
+#define FTDI_UART_FREQUENCY 3000000
+#define FTDI_MIN_DIVISOR 0x20
+#define FTDI_MAX_DIVISOR 0x3FFF8
+//
+// Special case baudrate values
+// 300,000 and 200,000 are special cases for calculating the encoded baudrate
+//
+#define FTDI_SPECIAL_CASE_300_MIN (3000000 * 100) / 103 // minimum adjusted
+ // value for 300,000
+#define FTDI_SPECIAL_CASE_300_MAX (3000000 * 100) / 97 // maximum adjusted
+ // value for 300,000
+#define FTDI_SPECIAL_CASE_200_MIN (2000000 * 100) / 103 // minimum adjusted
+ // value for 200,000
+#define FTDI_SPECIAL_CASE_200_MAX (2000000 * 100) / 97 // maximum adjusted
+ // value for 200,000
+//
+// Min and max frequency values that the FTDI chip can attain
+//.all generated frequencies must be between these values
+//
+#define FTDI_MIN_FREQUENCY 46601941 // (3MHz * 1600) / 103 = 46601941
+#define FTDI_MAX_FREQUENCY 49484536 // (3MHz * 1600) / 97 = 49484536
+
+//
+// SET_DATA_BITS
+//
+#define SET_DATA_BITS(n) (n)
+
+//
+// SET_PARITY
+//
+#define SET_PARITY_NONE 0x0
+#define SET_PARITY_ODD BIT8 // (0x1 << 8)
+#define SET_PARITY_EVEN BIT9 // (0x2 << 8)
+#define SET_PARITY_MARK BIT9 | BIT8 // (0x3 << 8)
+#define SET_PARITY_SPACE BIT10 // (0x4 << 8)
+
+//
+// SET_STOP_BITS
+//
+#define SET_STOP_BITS_1 0x0
+#define SET_STOP_BITS_15 BIT11 // (0x1 << 11)
+#define SET_STOP_BITS_2 BIT12 // (0x2 << 11)
+
+//
+// SET_MODEM_CTRL
+// SET_DTR_HIGH = (1 | (1 << 8)), SET_DTR_LOW = (0 | (1 << 8)
+// SET_RTS_HIGH = (2 | (2 << 8)), SET_RTS_LOW = (0 | (2 << 8)
+//
+#define SET_DTR_HIGH (BIT8 | BIT0)
+#define SET_DTR_LOW (BIT8)
+#define SET_RTS_HIGH (BIT9 | BIT1)
+#define SET_RTS_LOW (BIT9)
+
+//
+// MODEM_STATUS
+//
+#define CTS_MASK BIT4
+#define DSR_MASK BIT5
+#define RI_MASK BIT6
+#define SD_MASK BIT7
+#define MSR_MASK (CTS_MASK | DSR_MASK | RI_MASK | SD_MASK)
+
+//
+// Macro used to check for USB transfer errors
+//
+#define USB_IS_ERROR(Result, Error) (((Result) & (Error)) != 0)
+
+//
+// USB request timeouts
+//
+#define WDR_TIMEOUT 5000 // default urb timeout in ms
+#define WDR_SHORT_TIMEOUT 1000 // shorter urb timeout in ms
+
+//
+// FTDI timeout
+//
+#define FTDI_TIMEOUT 16
+
+//
+// FTDI FIFO depth
+//
+#define FTDI_MAX_RECEIVE_FIFO_DEPTH 384
+
+//
+// FTDI Endpoint Descriptors
+//
+#define FTDI_ENDPOINT_ADDRESS_IN 0x81 //the endpoint address for the in enpoint generated by the device
+#define FTDI_ENDPOINT_ADDRESS_OUT 0x02 //the endpoint address for the out endpoint generated by the device
+
+//
+// Max buffer size for USB transfers
+//
+#define SW_FIFO_DEPTH 1024
+
+//
+// struct to define a usb device as a vendor and product id pair
+//
+typedef struct {
+ UINTN VendorId;
+ UINTN DeviceId;
+} USB_DEVICE;
+
+//
+//struct to describe the control bits of the device
+//true indicates enabled
+//false indicates disabled
+//
+typedef struct {
+ BOOLEAN HardwareFlowControl;
+ BOOLEAN DtrState;
+ BOOLEAN RtsState;
+ BOOLEAN HardwareLoopBack;
+ BOOLEAN SoftwareLoopBack;
+} CONTROL_BITS;
+
+//
+//struct to describe the status bits of the device
+//true indicates enabled
+//false indicated disabled
+//
+typedef struct {
+ BOOLEAN CtsState;
+ BOOLEAN DsrState;
+ BOOLEAN RiState;
+ BOOLEAN SdState;
+} STATUS_BITS;
+
+//
+// Structure to describe the last attributes of the Usb Serial device
+//
+typedef struct {
+ UINT64 BaudRate;
+ UINT32 ReceiveFifoDepth;
+ UINT32 Timeout;
+ EFI_PARITY_TYPE Parity;
+ UINT8 DataBits;
+ EFI_STOP_BITS_TYPE StopBits;
+} PREVIOUS_ATTRIBUTES;
+
+//
+// Structure to describe USB serial device
+//
+#define USB_SER_DEV_SIGNATURE SIGNATURE_32 ('u', 's', 'b', 's')
+
+typedef struct {
+ UINTN Signature;
+ EFI_HANDLE ControllerHandle;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
+ UART_DEVICE_PATH UartDevicePath;
+ UART_FLOW_CONTROL_DEVICE_PATH FlowControlDevicePath;
+ EFI_USB_IO_PROTOCOL *UsbIo;
+ EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor;
+ EFI_USB_ENDPOINT_DESCRIPTOR InEndpointDescriptor;
+ EFI_USB_ENDPOINT_DESCRIPTOR OutEndpointDescriptor;
+ EFI_UNICODE_STRING_TABLE *ControllerNameTable;
+ UINT32 DataBufferHead;
+ UINT32 DataBufferTail;
+ UINT8 *DataBuffer;
+ EFI_SERIAL_IO_PROTOCOL SerialIo;
+ BOOLEAN Shutdown;
+ EFI_EVENT PollingLoop;
+ UINT32 ControlBits;
+ PREVIOUS_ATTRIBUTES LastSettings;
+ CONTROL_BITS ControlValues;
+ STATUS_BITS StatusValues;
+ UINT8 ReadBuffer[512];
+} USB_SER_DEV;
+
+#define USB_SER_DEV_FROM_THIS(a) \
+ CR(a, USB_SER_DEV, SerialIo, USB_SER_DEV_SIGNATURE)
+
+//
+// Global Variables
+//
+extern EFI_DRIVER_BINDING_PROTOCOL gUsbSerialDriverBinding;
+extern EFI_COMPONENT_NAME_PROTOCOL gUsbSerialComponentName;
+extern EFI_COMPONENT_NAME2_PROTOCOL gUsbSerialComponentName2;
+
+//
+// Functions of Driver Binding Protocol
+//
+/**
+ Check whether USB Serial driver supports this device.
+
+ @param This[in] The USB Serial driver binding protocol.
+ @param Controller[in] The controller handle to check.
+ @param RemainingDevicePath[in] The remaining device path.
+
+ @retval EFI_SUCCESS The driver supports this controller.
+ @retval other This device isn't supported.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ );
+
+/**
+ Starts the Serial device with this driver.
+
+ This function produces Serial IO Protocol and initializes the USB
+ Serial device to manage this USB Serial device.
+
+ @param This[in] The USB Serial driver binding instance.
+ @param Controller[in] Handle of device to bind driver to.
+ @param RemainingDevicePath[in] Optional parameter use to pick a specific
+ child device to start.
+
+ @retval EFI_SUCCESS The controller is controlled by the USB
+ Serial driver.
+ @retval EFI_UNSUPPORTED No interrupt endpoint can be found.
+ @retval Other This controller cannot be started.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ );
+
+/**
+ Stop the USB Serial device handled by this driver.
+
+ @param This[in] The USB Serial driver binding protocol.
+ @param Controller[in] The controller to release.
+ @param NumberOfChildren[in] The number of handles in ChildHandleBuffer.
+ @param ChildHandleBuffer[in] The array of child handle.
+
+ @retval EFI_SUCCESS The device was stopped.
+ @retval EFI_UNSUPPORTED Simple Text In Protocol or Simple Text In Ex
+ Protocol is not installed on Controller.
+ @retval EFI_DEVICE_ERROR The device could not be stopped due to a
+ device error.
+ @retval Others Fail to uninstall protocols attached on the
+ device.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ );
+
+//
+// Serial IO Member Functions
+//
+
+/**
+ Writes data to a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param BufferSize[in, out] On input, the size of the Buffer. On output,
+ the amount of data actually written.
+ @param Buffer[in] The buffer of data to write
+
+ @retval EFI_SUCCESS The data was written.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_TIMEOUT The data write was stopped due to a timeout.
+
+**/
+EFI_STATUS
+EFIAPI
+WriteSerialIo (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ );
+
+/**
+ Reads data from a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param BufferSize[in, out] On input, the size of the Buffer. On output,
+ the amount of data returned in Buffer.
+ @param Buffer[out] The buffer to return the data into.
+
+ @retval EFI_SUCCESS The data was read.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_TIMEOUT The data write was stopped due to a timeout.
+
+**/
+EFI_STATUS
+EFIAPI
+ReadSerialIo (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ );
+
+/**
+ Retrieves the status of the control bits on a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param Control[out] A pointer to return the current Control signals
+ from the serial device.
+
+ @retval EFI_SUCCESS The control bits were read from the serial
+ device.
+ @retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
+
+**/
+EFI_STATUS
+EFIAPI
+GetControlBits (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ OUT UINT32 *Control
+ );
+
+/**
+ Set the control bits on a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param Control[in] Set the bits of Control that are settable.
+
+ @retval EFI_SUCCESS The new control bits were set on the serial device.
+ @retval EFI_UNSUPPORTED The serial device does not support this operation.
+ @retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
+
+**/
+EFI_STATUS
+EFIAPI
+SetControlBits (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ IN UINT32 Control
+ );
+
+/**
+ Calls SetAttributesInternal() to set the baud rate, receive FIFO depth,
+ transmit/receice time out, parity, data buts, and stop bits on a serial device.
+
+ @param This[in] Protocol instance pointer.
+ @param BaudRate[in] The requested baud rate. A BaudRate value of 0
+ will use the device's default interface speed.
+ @param ReveiveFifoDepth[in] The requested depth of the FIFO on the receive
+ side of the serial interface. A ReceiveFifoDepth
+ value of 0 will use the device's default FIFO
+ depth.
+ @param Timeout[in] The requested time out for a single character in
+ microseconds.This timeout applies to both the
+ transmit and receive side of the interface.A
+ Timeout value of 0 will use the device's default
+ time out value.
+ @param Parity[in] The type of parity to use on this serial device.A
+ Parity value of DefaultParity will use the
+ device's default parity value.
+ @param DataBits[in] The number of data bits to use on the serial
+ device. A DataBits value of 0 will use the
+ device's default data bit setting.
+ @param StopBits[in] The number of stop bits to use on this serial
+ device. A StopBits value of DefaultStopBits will
+ use the device's default number of stop bits.
+
+ @retval EFI_SUCCESS The attributes were set
+ @retval EFI_DEVICE_ERROR The attributes were not able to be
+
+**/
+EFI_STATUS
+EFIAPI
+SetAttributes (
+ IN EFI_SERIAL_IO_PROTOCOL *This,
+ IN UINT64 BaudRate,
+ IN UINT32 ReceiveFifoDepth,
+ IN UINT32 Timeout,
+ IN EFI_PARITY_TYPE Parity,
+ IN UINT8 DataBits,
+ IN EFI_STOP_BITS_TYPE StopBits
+ );
+
+/**
+ Reset the serial device.
+
+ @param This Protocol instance pointer.
+
+ @retval EFI_SUCCESS The device was reset.
+ @retval EFI_DEVICE_ERROR The serial device could not be reset.
+
+**/
+EFI_STATUS
+EFIAPI
+SerialReset (
+ IN EFI_SERIAL_IO_PROTOCOL *This
+ );
+
+//
+// EFI Component Name Functions
+//
+
+/**
+ Retrieves a Unicode string that is the user readable name of the driver.
+
+ This function retrieves the user readable name of a driver in the form of a
+ Unicode string. If the driver specified by This has a user readable name in
+ the language specified by Language, then a pointer to the driver name is
+ returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
+ by This does not support the language specified by Language,
+ then EFI_UNSUPPORTED is returned.
+
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL
+ or EFI_COMPONENT_NAME_PROTOCOL instance.
+ @param Language[in] A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller
+ is requesting, and it must match one of the
+ languages specified in SupportedLanguages.
+ The number of languages supported by a
+ driver is up to the driver writer. Language
+ is specified in RFC 4646 or ISO 639-2
+ language code format.
+ @param DriverName[out] A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ driver specified by This in the language
+ specified by Language.
+
+ @retval EFI_SUCCESS The Unicode string for the Driver specified
+ by This and the language specified by
+ Language was returned in DriverName.
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER DriverName is NULL.
+ @retval EFI_UNSUPPORTED The driver specified by This does not
+ support the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialComponentNameGetDriverName (
+ IN EFI_COMPONENT_NAME2_PROTOCOL *This,
+ IN CHAR8 *Language,
+ OUT CHAR16 **DriverName
+ );
+
+/**
+ Retrieves a Unicode string that is the user readable name of the controller
+ that is being managed by a driver.
+
+ This function retrieves the user readable name of the controller specified by
+ ControllerHandle and ChildHandle in the form of a Unicode string. If the
+ driver specified by This has a user readable name in the language specified by
+ Language, then a pointer to the controller name is returned in ControllerName,
+ and EFI_SUCCESS is returned. If the driver specified by This is not currently
+ managing the controller specified by ControllerHandle and ChildHandle,
+ then EFI_UNSUPPORTED is returned. If the driver specified by This does not
+ support the language specified by Language, then EFI_UNSUPPORTED is returned.
+
+ @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL
+ or EFI_COMPONENT_NAME_PROTOCOL instance.
+ @param ControllerHandle[in] The handle of a controller that the driver
+ specified by This is managing. This handle
+ specifies the controller whose name is to
+ be returned.
+ @param ChildHandle[in] The handle of the child controller to
+ retrieve the name of. This is an optional
+ parameter that may be NULL. It will be NULL
+ for device drivers. It will also be NULL
+ for a bus drivers that wish to retrieve the
+ name of the bus controller. It will not be
+ NULL for a bus driver that wishes to
+ retrieve the name of a child controller.
+ @param Language[in] A pointer to a Null-terminated ASCII string
+ array indicating the language. This is the
+ language of the driver name that the caller
+ is requesting, and it must match one of the
+ languages specified in SupportedLanguages.
+ The number of languages supported by a
+ driver is up to the driver writer. Language
+ is specified in RFC 4646 or ISO 639-2
+ language code format.
+ @param ControllerName[out] A pointer to the Unicode string to return.
+ This Unicode string is the name of the
+ controller specified by ControllerHandle
+ and ChildHandle in the language specified
+ by Language from the point of view of the
+ driver specified by This.
+
+ @retval EFI_SUCCESS The Unicode string for the user readable
+ name in the language specified by Language
+ for the driver specified by This was
+ returned in DriverName.
+ @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
+ @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a
+ valid EFI_HANDLE.
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER ControllerName is NULL.
+ @retval EFI_UNSUPPORTED The driver specified by This is not
+ currently managing the controller specified
+ by ControllerHandle and ChildHandle.
+ @retval EFI_UNSUPPORTED The driver specified by This does not
+ support the language specified by Language.
+
+**/
+EFI_STATUS
+EFIAPI
+UsbSerialComponentNameGetControllerName (
+ IN EFI_COMPONENT_NAME2_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_HANDLE ChildHandle OPTIONAL,
+ IN CHAR8 *Language,
+ OUT CHAR16 **ControllerName
+ );
+
+#endif
diff --git a/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDxe.inf b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDxe.inf new file mode 100644 index 0000000000..e0381b1c44 --- /dev/null +++ b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/FtdiUsbSerialDxe.inf @@ -0,0 +1,61 @@ +## @file
+# USB Serial Driver that manages USB Serial device and produces Serial IO
+# Protocol.
+#
+# USB Serial Driver consumes USB I/O Protocol and Device Path Protocol, and
+# produces Serial IO Protocol on USB Serial devices.
+# It manages the USB Serial device via USB Bulk Transfer of USB I/O Protocol.
+# This module refers to following specifications:
+# 1. UEFI Specification, v2.1
+#
+# Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD
+# License which accompanies this distribution. The full text of the license may
+# be found at http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = FtdiUsbSerialDxe
+ FILE_GUID = A8154B55-2021-4D40-AE81-2E23A02dCC46
+ MODULE_TYPE = UEFI_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = FtdiUsbSerialEntryPoint
+ UNLOAD_IMAGE = FtdiUsbSerialUnload
+
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources]
+ FtdiUsbSerialDriver.c
+ FtdiUsbSerialDriver.h
+ ComponentName.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ UefiDriverEntryPoint
+ BaseMemoryLib
+ DebugLib
+ MemoryAllocationLib
+ UefiBootServicesTableLib
+ UefiLib
+ DevicePathLib
+
+[Guids]
+ gEfiUartDevicePathGuid
+
+[Protocols]
+ ## TO_START
+ ## BY_START
+ gEfiDevicePathProtocolGuid
+ gEfiUsbIoProtocolGuid ## TO_START
+ gEfiSerialIoProtocolGuid ## BY_START
diff --git a/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/ReadMe.txt b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/ReadMe.txt new file mode 100644 index 0000000000..d8ca227a41 --- /dev/null +++ b/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/ReadMe.txt @@ -0,0 +1,32 @@ +
+=== FTDI USB SERIAL OVERVIEW ===
+
+This is a bus driver that enables the EfiSerialIoProtocol interface
+for FTDI8U232AM based USB-to-Serial adapters.
+
+=== STATUS ===
+
+Serial Input: Functional on real hardware.
+Serial Output: Functional on real hardware.
+
+Operating Modes: Currently the user is able to change all operating modes
+except timeout and FIFO depth.
+The default operating mode is:
+ Baudrate: 115200
+ Parity: None
+ Flow Control: None
+ Data Bits: 8
+ Stop Bits: 1
+Notes:
+ Data Bits setting of 6,7,8 can not be combined with a Stop Bits setting of 1.5
+
+ At baudrates less than 9600 some of the characters may be transmitted incorrectly.
+
+=== COMPATIBILITY ===
+
+Tested with:
+An FTDI8U232AM based USB-To-Serial adapter, the UEFI Shell, and the SerialTest application
+using a PuTTY Terminal
+
+See CompatibleDevices.txt for a list of devices which have been confirmed to work with this
+driver.
\ No newline at end of file |