diff options
Diffstat (limited to 'EmulatorPkg/Library/DxeEmuSerialPortLib/DxeEmuSerialPortLib.c')
-rw-r--r-- | EmulatorPkg/Library/DxeEmuSerialPortLib/DxeEmuSerialPortLib.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/EmulatorPkg/Library/DxeEmuSerialPortLib/DxeEmuSerialPortLib.c b/EmulatorPkg/Library/DxeEmuSerialPortLib/DxeEmuSerialPortLib.c new file mode 100644 index 0000000000..ccf4fa08eb --- /dev/null +++ b/EmulatorPkg/Library/DxeEmuSerialPortLib/DxeEmuSerialPortLib.c @@ -0,0 +1,119 @@ +/** @file
+ Serial Port Lib that thunks back to Emulator services to write to StdErr.
+ All read functions are stubed out.
+
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+ Portions copyright (c) 2011, Apple Inc. 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 <PiDxe.h>
+#include <Library/SerialPortLib.h>
+#include <Library/EmuThunkLib.h>
+
+
+
+
+/**
+ Initialize the serial device hardware.
+
+ If no initialization is required, then return RETURN_SUCCESS.
+ If the serial device was successfully initialized, then return RETURN_SUCCESS.
+ If the serial device could not be initialized, then return RETURN_DEVICE_ERROR.
+
+ @retval RETURN_SUCCESS The serial device was initialized.
+ @retval RETURN_DEVICE_ERROR The serial device could not be initialized.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortInitialize (
+ VOID
+ )
+{
+ return gEmuThunk->ConfigStdIn ();
+}
+
+/**
+ Write data from buffer to serial device.
+
+ Writes NumberOfBytes data bytes from Buffer to the serial device.
+ The number of bytes actually written to the serial device is returned.
+ If the return value is less than NumberOfBytes, then the write operation failed.
+ If Buffer is NULL, then ASSERT().
+ If NumberOfBytes is zero, then return 0.
+
+ @param Buffer The pointer to the data buffer to be written.
+ @param NumberOfBytes The number of bytes to written to the serial device.
+
+ @retval 0 NumberOfBytes is 0.
+ @retval >0 The number of bytes written to the serial device.
+ If this value is less than NumberOfBytes, then the read operation failed.
+
+**/
+UINTN
+EFIAPI
+SerialPortWrite (
+ IN UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+ )
+{
+ return gEmuThunk->WriteStdOut (Buffer, NumberOfBytes);
+}
+
+
+/**
+ Read data from serial device and save the datas in buffer.
+
+ Reads NumberOfBytes data bytes from a serial device into the buffer
+ specified by Buffer. The number of bytes actually read is returned.
+ If the return value is less than NumberOfBytes, then the rest operation failed.
+ If Buffer is NULL, then ASSERT().
+ If NumberOfBytes is zero, then return 0.
+
+ @param Buffer The pointer to the data buffer to store the data read from the serial device.
+ @param NumberOfBytes The number of bytes which will be read.
+
+ @retval 0 Read data failed; No data is to be read.
+ @retval >0 The actual number of bytes read from serial device.
+
+**/
+UINTN
+EFIAPI
+SerialPortRead (
+ OUT UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+ )
+{
+ return gEmuThunk->ReadStdIn (Buffer, NumberOfBytes);
+}
+
+/**
+ Polls a serial device to see if there is any data waiting to be read.
+
+ Polls a serial device to see if there is any data waiting to be read.
+ If there is data waiting to be read from the serial device, then TRUE is returned.
+ If there is no data waiting to be read from the serial device, then FALSE is returned.
+
+ @retval TRUE Data is waiting to be read from the serial device.
+ @retval FALSE There is no data waiting to be read from the serial device.
+
+**/
+BOOLEAN
+EFIAPI
+SerialPortPoll (
+ VOID
+ )
+{
+ return gEmuThunk->PollStdIn ();
+}
+
+
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