system76-edk2/IntelFrameworkModulePkg/Universal/StatusCode/RuntimeDxe/SerialStatusCodeWorker.c

/** @file
  Serial I/O status code reporting worker.

  Copyright (c) 2006 - 2009, 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         
  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 "StatusCodeRuntimeDxe.h"

EFI_SERIAL_IO_PROTOCOL *mSerialIoProtocol;

/**
  Locates Serial I/O Protocol as initialization for serial status code worker.
 
  @retval EFI_SUCCESS  Serial I/O Protocol is successfully located.

**/
EFI_STATUS
EfiSerialStatusCodeInitializeWorker (
  VOID
  )
{
  EFI_STATUS Status;

  Status = gBS->LocateProtocol (
             &gEfiSerialIoProtocolGuid,
             NULL,
             (VOID **) &mSerialIoProtocol
             );

  ASSERT_EFI_ERROR (Status);

  return EFI_SUCCESS;
}


/**
  Convert status code value and extended data to readable ASCII string, send string to serial I/O device.
 
  @param  CodeType         Indicates the type of status code being reported.
  @param  Value            Describes the current status of a hardware or software entity.
                           This included information about the class and subclass that is used to
                           classify the entity as well as an operation.
  @param  Instance         The enumeration of a hardware or software entity within
                           the system. Valid instance numbers start with 1.
  @param  CallerId         This optional parameter may be used to identify the caller.
                           This parameter allows the status code driver to apply different rules to
                           different callers.
  @param  Data             This optional parameter may be used to pass additional data.

  @retval EFI_SUCCESS      Status code reported to serial I/O successfully.
  @retval EFI_DEVICE_ERROR EFI serial device cannot work after ExitBootService() is called.
  @retval EFI_DEVICE_ERROR EFI serial device cannot work with TPL higher than TPL_CALLBACK.

**/
EFI_STATUS
SerialStatusCodeReportWorker (
  IN EFI_STATUS_CODE_TYPE     CodeType,
  IN EFI_STATUS_CODE_VALUE    Value,
  IN UINT32                   Instance,
  IN EFI_GUID                 *CallerId,
  IN EFI_STATUS_CODE_DATA     *Data OPTIONAL
  )
{
  CHAR8           *Filename;
  CHAR8           *Description;
  CHAR8           *Format;
  CHAR8           Buffer[EFI_STATUS_CODE_DATA_MAX_SIZE];
  UINT32          ErrorLevel;
  UINT32          LineNumber;
  UINTN           CharCount;
  BASE_LIST       Marker;

  if (FeaturePcdGet (PcdStatusCodeUseEfiSerial)) {
    if (EfiAtRuntime ()) {
      return EFI_DEVICE_ERROR;
    }
    if (EfiGetCurrentTpl () > TPL_CALLBACK ) {
      return EFI_DEVICE_ERROR;
    }
  }

  Buffer[0] = '\0';

  if (Data != NULL &&
      ReportStatusCodeExtractAssertInfo (CodeType, Value, Data, &Filename, &Description, &LineNumber)) {
    //
    // Print ASSERT() information into output buffer.
    //
    CharCount = AsciiSPrint (
                  Buffer,
                  EFI_STATUS_CODE_DATA_MAX_SIZE,
                  "\n\rDXE_ASSERT!: %a (%d): %a\n\r",
                  Filename,
                  LineNumber,
                  Description
                  );
  } else if (Data != NULL &&
             ReportStatusCodeExtractDebugInfo (Data, &ErrorLevel, &Marker, &Format)) {
    //
    // Print DEBUG() information into output buffer.
    //
    CharCount = AsciiBSPrint (
                  Buffer, 
                  EFI_STATUS_CODE_DATA_MAX_SIZE, 
                  Format, 
                  Marker
                  );
  } else if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) == EFI_ERROR_CODE) {
    //
    // Print ERROR information into output buffer.
    //
    CharCount = AsciiSPrint (
                  Buffer, 
                  EFI_STATUS_CODE_DATA_MAX_SIZE, 
                  "ERROR: C%x:V%x I%x", 
                  CodeType, 
                  Value, 
                  Instance
                  );
   
    if (CallerId != NULL) {
      CharCount += AsciiSPrint (
                     &Buffer[CharCount - 1],
                     (EFI_STATUS_CODE_DATA_MAX_SIZE - (sizeof (Buffer[0]) * CharCount)),
                     " %g",
                     CallerId
                     );
    }

    if (Data != NULL) {
      CharCount += AsciiSPrint (
                     &Buffer[CharCount - 1],
                     (EFI_STATUS_CODE_DATA_MAX_SIZE - (sizeof (Buffer[0]) * CharCount)),
                     " %x",
                     Data
                     );
    }

    CharCount += AsciiSPrint (
                   &Buffer[CharCount - 1],
                   (EFI_STATUS_CODE_DATA_MAX_SIZE - (sizeof (Buffer[0]) * CharCount)),
                   "\n\r"
                   );
  } else if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) == EFI_PROGRESS_CODE) {
    //
    // Print PROGRESS information into output buffer.
    //
    CharCount = AsciiSPrint (
                  Buffer, 
                  EFI_STATUS_CODE_DATA_MAX_SIZE, 
                  "PROGRESS CODE: V%x I%x\n\r", 
                  Value, 
                  Instance
                  );
  } else {
    //
    // Code type is not defined.
    //
    CharCount = AsciiSPrint (
                  Buffer, 
                  EFI_STATUS_CODE_DATA_MAX_SIZE, 
                  "Undefined: C%x:V%x I%x\n\r", 
                  CodeType, 
                  Value, 
                  Instance
                  );
  }


  if (FeaturePcdGet (PcdStatusCodeUseHardSerial)) {
    //
    // Call SerialPort Lib function to do print.
    //
    SerialPortWrite ((UINT8 *) Buffer, CharCount);
  }
  if (FeaturePcdGet (PcdStatusCodeUseEfiSerial)) {
    mSerialIoProtocol->Write (
      mSerialIoProtocol,
      &CharCount,
      Buffer
      );
  }

  return EFI_SUCCESS;
}