EmbeddedPkg/SerialPortExtLib.h: Changed SerialPortSetAttributes() prototype to return the set value(s)

To be compliant with the UEFI specification it is required to update SERIAL_IO_MODE with the values set.
This prototype change allows to get the value used inside SerialPortSetAttributes().

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <Olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14365 6f19259b-4bc3-4df7-8a09-765794883524

4 files changed, 48 insertions, 36 deletions

diff --git a/ArmPlatformPkg/Drivers/PL011Uart/PL011Uart.c b/ArmPlatformPkg/Drivers/PL011Uart/PL011Uart.c
index d9280cd0bb..fdb9ff490e 100644
--- a/ArmPlatformPkg/Drivers/PL011Uart/PL011Uart.c
+++ b/ArmPlatformPkg/Drivers/PL011Uart/PL011Uart.c
@@ -31,12 +31,12 @@
 RETURN_STATUS

 EFIAPI

 PL011UartInitializePort (

-  IN UINTN               UartBase,

-  IN UINT64              BaudRate,

-  IN UINT32              ReceiveFifoDepth,

-  IN EFI_PARITY_TYPE     Parity,

-  IN UINT8               DataBits,

-  IN EFI_STOP_BITS_TYPE  StopBits

+  IN OUT UINTN               UartBase,

+  IN OUT UINT64              *BaudRate,

+  IN OUT UINT32              *ReceiveFifoDepth,

+  IN OUT EFI_PARITY_TYPE     *Parity,

+  IN OUT UINT8               *DataBits,

+  IN OUT EFI_STOP_BITS_TYPE  *StopBits

   )

 {

   UINT32      LineControl;

@@ -47,19 +47,21 @@ PL011UartInitializePort (
   // The PL011 supports a buffer of either 1 or 32 chars. Therefore we can accept

   // 1 char buffer as the minimum fifo size. Because everything can be rounded down,

   // there is no maximum fifo size.

-  if (ReceiveFifoDepth == 0) {

+  if ((*ReceiveFifoDepth == 0) || (*ReceiveFifoDepth >= 32)) {

     LineControl |= PL011_UARTLCR_H_FEN;

-  } else if (ReceiveFifoDepth < 32) {

+    *ReceiveFifoDepth = 32;

+  } else {

+    ASSERT (*ReceiveFifoDepth < 32);

     // Nothing else to do. 1 byte fifo is default.

-  } else if (ReceiveFifoDepth >= 32) {

-    LineControl |= PL011_UARTLCR_H_FEN;

+    *ReceiveFifoDepth = 1;

   }

 

   //

   // Parity

   //

-  switch (Parity) {

+  switch (*Parity) {

   case DefaultParity:

+    *Parity = NoParity;

   case NoParity:

     // Nothing to do. Parity is disabled by default.

     break;

@@ -82,8 +84,9 @@ PL011UartInitializePort (
   //

   // Data Bits

   //

-  switch (DataBits) {

+  switch (*DataBits) {

   case 0:

+    *DataBits = 8;

   case 8:

     LineControl |= PL011_UARTLCR_H_WLEN_8;

     break;

@@ -103,8 +106,9 @@ PL011UartInitializePort (
   //

   // Stop Bits

   //

-  switch (StopBits) {

+  switch (*StopBits) {

   case DefaultStopBits:

+    *StopBits = OneStopBit;

   case OneStopBit:

     // Nothing to do. One stop bit is enabled by default.

     break;

@@ -132,14 +136,14 @@ PL011UartInitializePort (
       MmioWrite32 (UartBase + UARTIBRD, PcdGet32 (PL011UartInteger));

       MmioWrite32 (UartBase + UARTFBRD, PcdGet32 (PL011UartFractional));

     } else {

-      BaudRate = PcdGet32 (PcdSerialBaudRate);

-      ASSERT (BaudRate != 0);

+      *BaudRate = PcdGet32 (PcdSerialBaudRate);

+      ASSERT (*BaudRate != 0);

     }

   }

 

   // If BaudRate != 0 then we must calculate the divisor from the value

-  if (BaudRate != 0) {

-    Divisor = (PcdGet32 (PL011UartClkInHz) * 4) / BaudRate;

+  if (*BaudRate != 0) {

+    Divisor = (PcdGet32 (PL011UartClkInHz) * 4) / *BaudRate;

     MmioWrite32 (UartBase + UARTIBRD, Divisor >> 6);

     MmioWrite32 (UartBase + UARTFBRD, Divisor & 0x3F);

   }

diff --git a/ArmPlatformPkg/Include/Drivers/PL011Uart.h b/ArmPlatformPkg/Include/Drivers/PL011Uart.h
index 354f111032..23e9a94347 100644
--- a/ArmPlatformPkg/Include/Drivers/PL011Uart.h
+++ b/ArmPlatformPkg/Include/Drivers/PL011Uart.h
@@ -91,12 +91,12 @@
 RETURN_STATUS

 EFIAPI

 PL011UartInitializePort (

-  IN UINTN               UartBase,

-  IN UINT64              BaudRate,

-  IN UINT32              ReceiveFifoDepth,

-  IN EFI_PARITY_TYPE     Parity,

-  IN UINT8               DataBits,

-  IN EFI_STOP_BITS_TYPE  StopBits

+  IN OUT UINTN               UartBase,

+  IN OUT UINT64              *BaudRate,

+  IN OUT UINT32              *ReceiveFifoDepth,

+  IN OUT EFI_PARITY_TYPE     *Parity,

+  IN OUT UINT8               *DataBits,

+  IN OUT EFI_STOP_BITS_TYPE  *StopBits

   );

 

 /**

diff --git a/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortExtLib.c b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortExtLib.c
index 9bfe42e60c..57f3fa0eea 100644
--- a/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortExtLib.c
+++ b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortExtLib.c
@@ -1,7 +1,7 @@
 /** @file

   Serial I/O Port library functions with no library constructor/destructor

 

-  Copyright (c) 2012, ARM Ltd. All rights reserved.<BR>

+  Copyright (c) 2012-2013, ARM Ltd. All rights reserved.<BR>

   

   This program and the accompanying materials

   are licensed and made available under the terms and conditions of the BSD License

@@ -47,12 +47,12 @@
 RETURN_STATUS

 EFIAPI

 SerialPortSetAttributes (

-  IN UINT64              BaudRate,

-  IN UINT32              ReceiveFifoDepth,

-  IN UINT32              Timeout,

-  IN EFI_PARITY_TYPE     Parity,

-  IN UINT8               DataBits,

-  IN EFI_STOP_BITS_TYPE  StopBits

+  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 (

diff --git a/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c
index 09033dbd76..4f628086ac 100644
--- a/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c
+++ b/ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c
@@ -2,7 +2,7 @@
   Serial I/O Port library functions with no library constructor/destructor

 

   Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>

-  Copyright (c) 2012, ARM Ltd. All rights reserved.<BR>

+  Copyright (c) 2012 - 2013, ARM Ltd. All rights reserved.<BR>

   

   This program and the accompanying materials

   are licensed and made available under the terms and conditions of the BSD License

@@ -37,13 +37,21 @@ SerialPortInitialize (
   VOID

   )

 {

+  UINT64              BaudRate;

+  UINT32              ReceiveFifoDepth;

+  EFI_PARITY_TYPE     Parity;

+  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);

+

   return PL011UartInitializePort (

       (UINTN)PcdGet64 (PcdSerialRegisterBase),

-      (UINTN)PcdGet64 (PcdUartDefaultBaudRate),

-      0, // Use the default value for Fifo depth

-      (EFI_PARITY_TYPE)PcdGet8 (PcdUartDefaultParity),

-      PcdGet8 (PcdUartDefaultDataBits),

-      (EFI_STOP_BITS_TYPE) PcdGet8 (PcdUartDefaultStopBits));

+      &BaudRate, &ReceiveFifoDepth, &Parity, &DataBits, &StopBits);

 }

 

 /**