src/vendorcode/amd/agesa/f15tn/Proc/IDS/Debug/IdsDpSerial.c

/**
 * @file
 *
 * AMD Integrated Debug Debug_library Routines
 *
 * Contains all functions related to HDTOUT
 *
 * @xrefitem bom "File Content Label" "Release Content"
 * @e project:      AGESA
 * @e sub-project:  IDS
 * @e \$Revision: 63425 $   @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $
 */
/*****************************************************************************
 * Copyright (c) 2008 - 2012, Advanced Micro Devices, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Advanced Micro Devices, Inc. nor the names of
 *       its contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ******************************************************************************
 */

 /*----------------------------------------------------------------------------------------
 *                             M O D U L E S    U S E D
 *----------------------------------------------------------------------------------------
 */
#include "AGESA.h"
#include "Ids.h"
#include "IdsLib.h"
#include "amdlib.h"
#include "AMD.h"
#include "IdsDebugPrint.h"
#include "Filecode.h"
CODE_GROUP (G1_PEICC)
RDATA_GROUP (G1_PEICC)

#define FILECODE PROC_IDS_DEBUG_IDSDPSERIAL_FILECODE

/**
 *  Determine whether IDS console is enabled.
 *
 *
 *  @retval       TRUE    Alway return true
 *
 **/
STATIC BOOLEAN
AmdIdsSerialSupport (
  VOID
  )
{

  return TRUE;
}

/**
 *  Get Serial customize Filter
 *
 *  @param[in,out] Filter    Filter do be filled
 *
 *  @retval       FALSE    Alway return FALSE
 *
 **/
STATIC BOOLEAN
AmdIdsSerialGetFilter (
  IN OUT   UINT64 *Filter
  )
{
  return FALSE;
}


#define IDS_SERIAL_PORT_LSR (IDS_SERIAL_PORT + 5)
#define IDS_LSR_TRANSMIT_HOLDING_REGISTER_EMPTY_MASK BIT5
/**
 *  Send byte to  Serial Port
 *
 *  Before use this routine, please make sure Serial Communications Chip have been initialed
 *
 *  @param[in] ByteSended   Byte to be sended
 *
 *  @retval       TRUE    Byte sended successfully
 *  @retval       FALSE   Byte sended failed
 *
 **/
STATIC BOOLEAN
AmdIdsSerialSendByte (
  IN      CHAR8   ByteSended
  )
{
  UINT32 RetryCount;
  UINT8 Value;

  //Wait until LSR.Bit5 (Transmitter holding register Empty)
  RetryCount = 200;
  do {
    LibAmdIoRead (AccessWidth8, IDS_SERIAL_PORT_LSR, &Value, NULL);
    RetryCount--;
  } while (((Value & IDS_LSR_TRANSMIT_HOLDING_REGISTER_EMPTY_MASK) == 0) &&
           (RetryCount > 0));

  if (RetryCount == 0) {
    //Time expired
    return FALSE;
  } else {
    LibAmdIoWrite (AccessWidth8, IDS_SERIAL_PORT, &ByteSended, NULL);
    return TRUE;
  }
}


/**
 *  Print formated string
 *
 *  @param[in] Buffer  - Point to input buffer
 *  @param[in] BufferSize  - Buffer size
 *  @param[in] debugPrintPrivate  - Option
 *
**/
STATIC VOID
AmdIdsSerialPrint (
  IN      CHAR8   *Buffer,
  IN      UINTN BufferSize,
  IN      IDS_DEBUG_PRINT_PRIVATE_DATA *debugPrintPrivate
  )
{
  BOOLEAN SendStatus;
  UINT32 RetryCount;
  RetryCount = 200;
  while (BufferSize--) {
    do {
      if (*Buffer == '\n') {
        SendStatus = AmdIdsSerialSendByte ('\r');
      }
      SendStatus = AmdIdsSerialSendByte (*Buffer);
      RetryCount--;
    } while ((SendStatus == FALSE) && (RetryCount > 0));
    Buffer ++;
  }
}

/**
 *  Init local private data
 *
 *  @param[in] Flag    - filter flag
 *  @param[in] debugPrintPrivate  - Point to debugPrintPrivate
 *
**/
STATIC VOID
AmdIdsSerialInitPrivateData (
  IN      UINT64 Flag,
  IN      IDS_DEBUG_PRINT_PRIVATE_DATA *debugPrintPrivate
  )
{

}

CONST IDS_DEBUG_PRINT ROMDATA  IdsDebugPrintSerialInstance =
{
  AmdIdsSerialSupport,
  AmdIdsSerialGetFilter,
  AmdIdsSerialInitPrivateData,
  AmdIdsSerialPrint
};