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-rw-r--r--Vlv2TbltDevicePkg/Library/SerialPortLib/SerialPortLib.c514
1 files changed, 252 insertions, 262 deletions
diff --git a/Vlv2TbltDevicePkg/Library/SerialPortLib/SerialPortLib.c b/Vlv2TbltDevicePkg/Library/SerialPortLib/SerialPortLib.c
index 21d5e8aec5..891972f1a1 100644
--- a/Vlv2TbltDevicePkg/Library/SerialPortLib/SerialPortLib.c
+++ b/Vlv2TbltDevicePkg/Library/SerialPortLib/SerialPortLib.c
@@ -1,262 +1,252 @@
-/** @file
- Serial I/O Port library functions with no library constructor/destructor
-
- Copyright (c) 2006 - 2014, 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 that 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.
-
- This software and associated documentation
- (if any) is furnished under a license and may only be used or
- copied in accordance with the terms of the license. Except as
- permitted by such license, no part of this software or
- documentation may be reproduced, stored in a retrieval system, or
- transmitted in any form or by any means without the express written
- consent of Intel Corporation.
-
- Module Name: SerialPortLib.c
-
-**/
-
-#include "PlatformSerialPortLib.h"
-
-UINT16 gComBase = 0x3f8;
-UINTN gBps = 115200;
-UINT8 gData = 8;
-UINT8 gStop = 1;
-UINT8 gParity = 0;
-UINT8 gBreakSet = 0;
-
-/**
- Initialize Serial Port
-
- The Baud Rate Divisor registers are programmed and the LCR
- is used to configure the communications format. Hard coded
- UART config comes from globals in DebugSerialPlatform lib.
-
- @param None
-
- @retval None
-
-**/
-RETURN_STATUS
-EFIAPI
-UARTInitialize (
- VOID
- )
-{
- UINTN Divisor;
- UINT8 OutputData;
- UINT8 Data;
-
- //
- // Map 5..8 to 0..3
- //
- Data = (UINT8) (gData - (UINT8) 5);
-
- //
- // Calculate divisor for baud generator
- //
- Divisor = 115200 / gBps;
-
- //
- // Set communications format
- //
- OutputData = (UINT8) ((DLAB << 7) | ((gBreakSet << 6) | ((gParity << 3) | ((gStop << 2) | Data))));
- IoWrite8 (gComBase + LCR_OFFSET, OutputData);
-
- //
- // Configure baud rate
- //
- IoWrite8 (gComBase + BAUD_HIGH_OFFSET, (UINT8) (Divisor >> 8));
- IoWrite8 (gComBase + BAUD_LOW_OFFSET, (UINT8) (Divisor & 0xff));
-
- //
- // Switch back to bank 0
- //
- OutputData = (UINT8) ((~DLAB << 7) | ((gBreakSet << 6) | ((gParity << 3) | ((gStop << 2) | Data))));
- IoWrite8 (gComBase + LCR_OFFSET, OutputData);
-
- return RETURN_SUCCESS;
-}
-
-/**
- Common function to initialize UART Serial device and USB Serial device.
-
- @param None
-
- @retval None
-
-**/
-RETURN_STATUS
-EFIAPI
-SerialPortInitialize (
- VOID
- )
-{
-
- UARTInitialize ();
-
-
- return RETURN_SUCCESS;
-}
-
-/**
- Write data to serial device.
-
- If the buffer is NULL, then return 0;
- if NumberOfBytes is zero, then return 0.
-
- @param Buffer Point of data buffer which need to be writed.
- @param NumberOfBytes Number of output bytes which are cached in Buffer.
-
- @retval 0 Write data failed.
- @retval !0 Actual number of bytes writed to serial device.
-
-**/
-UINTN
-EFIAPI
-UARTDbgOut (
- IN UINT8 *Buffer,
- IN UINTN NumberOfBytes
-)
-{
- UINTN Result;
- UINT8 Data;
-
- if (NULL == Buffer) {
- return 0;
- }
-
- Result = NumberOfBytes;
-
- while (NumberOfBytes--) {
- //
- // Wait for the serial port to be ready.
- //
- do {
- Data = IoRead8 ((UINT16) PcdGet64 (PcdSerialRegisterBase) + LSR_OFFSET);
- } while ((Data & LSR_TXRDY) == 0);
- IoWrite8 ((UINT16) PcdGet64 (PcdSerialRegisterBase), *Buffer++);
- }
-
- return Result;
-}
-
-/**
- Common function to write data to UART Serial device and USB Serial device.
-
- @param Buffer Point of data buffer which need to be writed.
- @param NumberOfBytes Number of output bytes which are cached in Buffer.
-
-**/
-UINTN
-EFIAPI
-SerialPortWrite (
- IN UINT8 *Buffer,
- IN UINTN NumberOfBytes
-)
-{
- if (FeaturePcdGet (PcdStatusCodeUseIsaSerial)) {
- UARTDbgOut (Buffer, NumberOfBytes);
- }
-
- return RETURN_SUCCESS;
-}
-
-/**
- Read data from serial device and save the datas in buffer.
-
- If the buffer is NULL, then return 0;
- if NumberOfBytes is zero, then return 0.
-
- @param Buffer Point of data buffer which need to be writed.
- @param NumberOfBytes Number of output bytes which are cached in Buffer.
-
- @retval 0 Read data failed.
- @retval !0 Actual number of bytes raed to serial device.
-
-**/
-UINTN
-EFIAPI
-UARTDbgIn (
- OUT UINT8 *Buffer,
- IN UINTN NumberOfBytes
-)
-{
- UINTN Result;
- UINT8 Data;
-
- if (NULL == Buffer) {
- return 0;
- }
-
- Result = NumberOfBytes;
-
- while (NumberOfBytes--) {
- //
- // Wait for the serial port to be ready.
- //
- do {
- Data = IoRead8 ((UINT16) PcdGet64 (PcdSerialRegisterBase) + LSR_OFFSET);
- } while ((Data & LSR_RXDA) == 0);
-
- *Buffer++ = IoRead8 ((UINT16) PcdGet64 (PcdSerialRegisterBase));
- }
-
- return Result;
-}
-
-/**
- Common function to Read data from UART serial device, USB serial device and save the datas in buffer.
-
- @param Buffer Point of data buffer which need to be writed.
- @param NumberOfBytes Number of output bytes which are cached in Buffer.
-
-**/
-UINTN
-EFIAPI
-SerialPortRead (
- OUT UINT8 *Buffer,
- IN UINTN NumberOfBytes
-)
-{
- if (FeaturePcdGet (PcdStatusCodeUseIsaSerial)) {
- UARTDbgIn (Buffer, NumberOfBytes);
- }
-
- return RETURN_SUCCESS;
-}
-
-
-/**
- Polls a serial device to see if there is any data waiting to be read.
-
- Polls aserial 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
- )
-{
- UINT8 Data;
-
- //
- // Read the serial port status.
- //
- Data = IoRead8 ((UINT16) PcdGet64 (PcdSerialRegisterBase) + LSR_OFFSET);
-
- return (BOOLEAN) ((Data & LSR_RXDA) != 0);
-}
+/** @file
+ Serial I/O Port library functions with no library constructor/destructor
+
+ Copyright (c) 2006 - 2017, 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 that 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 "PlatformSerialPortLib.h"
+
+UINT16 gComBase = 0x3f8;
+UINTN gBps = 115200;
+UINT8 gData = 8;
+UINT8 gStop = 1;
+UINT8 gParity = 0;
+UINT8 gBreakSet = 0;
+
+/**
+ Initialize Serial Port
+
+ The Baud Rate Divisor registers are programmed and the LCR
+ is used to configure the communications format. Hard coded
+ UART config comes from globals in DebugSerialPlatform lib.
+
+ @param None
+
+ @retval None
+
+**/
+RETURN_STATUS
+EFIAPI
+UARTInitialize (
+ VOID
+ )
+{
+ UINTN Divisor;
+ UINT8 OutputData;
+ UINT8 Data;
+
+ //
+ // Map 5..8 to 0..3
+ //
+ Data = (UINT8) (gData - (UINT8) 5);
+
+ //
+ // Calculate divisor for baud generator
+ //
+ Divisor = 115200 / gBps;
+
+ //
+ // Set communications format
+ //
+ OutputData = (UINT8) ((DLAB << 7) | ((gBreakSet << 6) | ((gParity << 3) | ((gStop << 2) | Data))));
+ IoWrite8 (gComBase + LCR_OFFSET, OutputData);
+
+ //
+ // Configure baud rate
+ //
+ IoWrite8 (gComBase + BAUD_HIGH_OFFSET, (UINT8) (Divisor >> 8));
+ IoWrite8 (gComBase + BAUD_LOW_OFFSET, (UINT8) (Divisor & 0xff));
+
+ //
+ // Switch back to bank 0
+ //
+ OutputData = (UINT8) ((~DLAB << 7) | ((gBreakSet << 6) | ((gParity << 3) | ((gStop << 2) | Data))));
+ IoWrite8 (gComBase + LCR_OFFSET, OutputData);
+
+ return RETURN_SUCCESS;
+}
+
+/**
+ Common function to initialize UART Serial device and USB Serial device.
+
+ @param None
+
+ @retval None
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortInitialize (
+ VOID
+ )
+{
+
+ UARTInitialize ();
+
+
+ return RETURN_SUCCESS;
+}
+
+/**
+ Write data to serial device.
+
+ If the buffer is NULL, then return 0;
+ if NumberOfBytes is zero, then return 0.
+
+ @param Buffer Point of data buffer which need to be writed.
+ @param NumberOfBytes Number of output bytes which are cached in Buffer.
+
+ @retval 0 Write data failed.
+ @retval !0 Actual number of bytes writed to serial device.
+
+**/
+UINTN
+EFIAPI
+UARTDbgOut (
+ IN UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+)
+{
+ UINTN Result;
+ UINT8 Data;
+
+ if (NULL == Buffer) {
+ return 0;
+ }
+
+ Result = NumberOfBytes;
+
+ while (NumberOfBytes--) {
+ //
+ // Wait for the serial port to be ready.
+ //
+ do {
+ Data = IoRead8 ((UINT16) PcdGet64 (PcdSerialRegisterBase) + LSR_OFFSET);
+ } while ((Data & LSR_TXRDY) == 0);
+ IoWrite8 ((UINT16) PcdGet64 (PcdSerialRegisterBase), *Buffer++);
+ }
+
+ return Result;
+}
+
+/**
+ Common function to write data to UART Serial device and USB Serial device.
+
+ @param Buffer Point of data buffer which need to be writed.
+ @param NumberOfBytes Number of output bytes which are cached in Buffer.
+
+**/
+UINTN
+EFIAPI
+SerialPortWrite (
+ IN UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+)
+{
+ if (FeaturePcdGet (PcdStatusCodeUseIsaSerial)) {
+ UARTDbgOut (Buffer, NumberOfBytes);
+ }
+
+ return RETURN_SUCCESS;
+}
+
+/**
+ Read data from serial device and save the datas in buffer.
+
+ If the buffer is NULL, then return 0;
+ if NumberOfBytes is zero, then return 0.
+
+ @param Buffer Point of data buffer which need to be writed.
+ @param NumberOfBytes Number of output bytes which are cached in Buffer.
+
+ @retval 0 Read data failed.
+ @retval !0 Actual number of bytes raed to serial device.
+
+**/
+UINTN
+EFIAPI
+UARTDbgIn (
+ OUT UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+)
+{
+ UINTN Result;
+ UINT8 Data;
+
+ if (NULL == Buffer) {
+ return 0;
+ }
+
+ Result = NumberOfBytes;
+
+ while (NumberOfBytes--) {
+ //
+ // Wait for the serial port to be ready.
+ //
+ do {
+ Data = IoRead8 ((UINT16) PcdGet64 (PcdSerialRegisterBase) + LSR_OFFSET);
+ } while ((Data & LSR_RXDA) == 0);
+
+ *Buffer++ = IoRead8 ((UINT16) PcdGet64 (PcdSerialRegisterBase));
+ }
+
+ return Result;
+}
+
+/**
+ Common function to Read data from UART serial device, USB serial device and save the datas in buffer.
+
+ @param Buffer Point of data buffer which need to be writed.
+ @param NumberOfBytes Number of output bytes which are cached in Buffer.
+
+**/
+UINTN
+EFIAPI
+SerialPortRead (
+ OUT UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+)
+{
+ if (FeaturePcdGet (PcdStatusCodeUseIsaSerial)) {
+ UARTDbgIn (Buffer, NumberOfBytes);
+ }
+
+ return RETURN_SUCCESS;
+}
+
+
+/**
+ Polls a serial device to see if there is any data waiting to be read.
+
+ Polls aserial 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
+ )
+{
+ UINT8 Data;
+
+ //
+ // Read the serial port status.
+ //
+ Data = IoRead8 ((UINT16) PcdGet64 (PcdSerialRegisterBase) + LSR_OFFSET);
+
+ return (BOOLEAN) ((Data & LSR_RXDA) != 0);
+}
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