X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=ArmPlatformPkg%2FLibrary%2FPL011SerialPortLib%2FPL011SerialPortLib.c;h=d576f79c3e6e045ef2f59ea3a827ebe7d1063bd7;hp=d4f7fc96f6d4893dfe1c5592920bec443ede9fd5;hb=5a9b3eb8e5fbbc0a49f80630039d58712aacfab8;hpb=3402aac7d985bf8a9f9d3c639f3fe93609380513
diff --git a/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c
index d4f7fc96f6..d576f79c3e 100644
--- a/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c
+++ b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c
@@ -2,7 +2,8 @@
Serial I/O Port library functions with no library constructor/destructor
Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.
- Copyright (c) 2012 - 2013, ARM Ltd. All rights reserved.
+ Copyright (c) 2012 - 2016, ARM Ltd. All rights reserved.
+ Copyright (c) 2015, Intel Corporation. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -18,19 +19,16 @@
#include
#include
+#include
+#include
#include
-#include
-#include
+/** Initialise the serial device hardware with default settings.
-
-/**
-
- Programmed hardware of Serial port.
-
- @return Always return RETURN_UNSUPPORTED.
-
-**/
+ @retval RETURN_SUCCESS The serial device was initialised.
+ @retval RETURN_INVALID_PARAMETER One or more of the default settings
+ has an unsupported value.
+ **/
RETURN_STATUS
EFIAPI
SerialPortInitialize (
@@ -43,15 +41,21 @@ SerialPortInitialize (
UINT8 DataBits;
EFI_STOP_BITS_TYPE StopBits;
- BaudRate = (UINTN)PcdGet64 (PcdUartDefaultBaudRate);
- ReceiveFifoDepth = 0; // Use the default value for Fifo depth
- Parity = (EFI_PARITY_TYPE)PcdGet8 (PcdUartDefaultParity);
- DataBits = PcdGet8 (PcdUartDefaultDataBits);
- StopBits = (EFI_STOP_BITS_TYPE) PcdGet8 (PcdUartDefaultStopBits);
+ BaudRate = FixedPcdGet64 (PcdUartDefaultBaudRate);
+ ReceiveFifoDepth = 0; // Use default FIFO depth
+ Parity = (EFI_PARITY_TYPE)FixedPcdGet8 (PcdUartDefaultParity);
+ DataBits = FixedPcdGet8 (PcdUartDefaultDataBits);
+ StopBits = (EFI_STOP_BITS_TYPE) FixedPcdGet8 (PcdUartDefaultStopBits);
return PL011UartInitializePort (
- (UINTN)PcdGet64 (PcdSerialRegisterBase),
- &BaudRate, &ReceiveFifoDepth, &Parity, &DataBits, &StopBits);
+ (UINTN)PcdGet64 (PcdSerialRegisterBase),
+ PL011UartClockGetFreq(),
+ &BaudRate,
+ &ReceiveFifoDepth,
+ &Parity,
+ &DataBits,
+ &StopBits
+ );
}
/**
@@ -97,9 +101,8 @@ SerialPortRead (
/**
Check to see if any data is available to be read from the debug device.
- @retval EFI_SUCCESS At least one byte of data is available to be read
- @retval EFI_NOT_READY No data is available to be read
- @retval EFI_DEVICE_ERROR The serial device is not functioning properly
+ @retval TRUE At least one byte of data is available to be read
+ @retval FALSE No data is available to be read
**/
BOOLEAN
@@ -110,4 +113,131 @@ SerialPortPoll (
{
return PL011UartPoll ((UINTN)PcdGet64 (PcdSerialRegisterBase));
}
+/**
+ Set new attributes to PL011.
+
+ @param BaudRate The baud rate of the serial device. If the
+ baud rate is not supported, the speed will
+ be reduced down to the nearest supported one
+ and the variable's value will be updated
+ accordingly.
+ @param ReceiveFifoDepth The number of characters the device will
+ buffer on input. If the specified value is
+ not supported, the variable's value will
+ be reduced down to the nearest supported one.
+ @param Timeout If applicable, the number of microseconds the
+ device will wait before timing out a Read or
+ a Write operation.
+ @param Parity If applicable, this is the EFI_PARITY_TYPE
+ that is computed or checked as each character
+ is transmitted or received. If the device
+ does not support parity, the value is the
+ default parity value.
+ @param DataBits The number of data bits in each character
+ @param StopBits If applicable, the EFI_STOP_BITS_TYPE number
+ of stop bits per character. If the device
+ does not support stop bits, the value is the
+ default stop bit value.
+
+ @retval EFI_SUCCESS All attributes were set correctly.
+ @retval EFI_INVALID_PARAMETERS One or more attributes has an unsupported
+ value.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortSetAttributes (
+ IN OUT UINT64 *BaudRate,
+ IN OUT UINT32 *ReceiveFifoDepth,
+ IN OUT UINT32 *Timeout,
+ IN OUT EFI_PARITY_TYPE *Parity,
+ IN OUT UINT8 *DataBits,
+ IN OUT EFI_STOP_BITS_TYPE *StopBits
+ )
+{
+ return PL011UartInitializePort (
+ (UINTN)PcdGet64 (PcdSerialRegisterBase),
+ PL011UartClockGetFreq(),
+ BaudRate,
+ ReceiveFifoDepth,
+ Parity,
+ DataBits,
+ StopBits
+ );
+}
+
+/**
+
+ Assert or deassert the control signals on a serial port.
+ The following control signals are set according their bit settings :
+ . Request to Send
+ . Data Terminal Ready
+
+ @param[in] Control The following bits are taken into account :
+ . EFI_SERIAL_REQUEST_TO_SEND : assert/deassert the
+ "Request To Send" control signal if this bit is
+ equal to one/zero.
+ . EFI_SERIAL_DATA_TERMINAL_READY : assert/deassert
+ the "Data Terminal Ready" control signal if this
+ bit is equal to one/zero.
+ . EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE : enable/disable
+ the hardware loopback if this bit is equal to
+ one/zero.
+ . EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE : not supported.
+ . EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE : enable/
+ disable the hardware flow control based on CTS (Clear
+ To Send) and RTS (Ready To Send) control signals.
+
+ @retval RETURN_SUCCESS The new control bits were set on the device.
+ @retval RETURN_UNSUPPORTED The device does not support this operation.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortSetControl (
+ IN UINT32 Control
+ )
+{
+ return PL011UartSetControl ((UINTN)PcdGet64 (PcdSerialRegisterBase), Control);
+}
+/**
+
+ Retrieve the status of the control bits on a serial device.
+
+ @param[out] Control Status of the control bits on a serial device :
+
+ . EFI_SERIAL_DATA_CLEAR_TO_SEND,
+ EFI_SERIAL_DATA_SET_READY,
+ EFI_SERIAL_RING_INDICATE,
+ EFI_SERIAL_CARRIER_DETECT,
+ EFI_SERIAL_REQUEST_TO_SEND,
+ EFI_SERIAL_DATA_TERMINAL_READY
+ are all related to the DTE (Data Terminal Equipment)
+ and DCE (Data Communication Equipment) modes of
+ operation of the serial device.
+ . EFI_SERIAL_INPUT_BUFFER_EMPTY : equal to one if the
+ receive buffer is empty, 0 otherwise.
+ . EFI_SERIAL_OUTPUT_BUFFER_EMPTY : equal to one if the
+ transmit buffer is empty, 0 otherwise.
+ . EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE : equal to one if
+ the hardware loopback is enabled (the output feeds
+ the receive buffer), 0 otherwise.
+ . EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE : equal to one
+ if a loopback is accomplished by software, else 0.
+ . EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE : equal to
+ one if the hardware flow control based on CTS (Clear
+ To Send) and RTS (Ready To Send) control signals is
+ enabled, 0 otherwise.
+
+ @retval RETURN_SUCCESS The control bits were read from the device.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortGetControl (
+ OUT UINT32 *Control
+ )
+{
+ return PL011UartGetControl ((UINTN)PcdGet64 (PcdSerialRegisterBase), Control);
+}