/** @file

Copyright (c) 2004 - 2011, 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         
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.             

Module Name:

  GenSection.c

Abstract:

  Creates output file that is a properly formed section per the PI spec.

**/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#include <Common/UefiBaseTypes.h>
#include <Common/PiFirmwareFile.h>
#include <Protocol/GuidedSectionExtraction.h>
#include <IndustryStandard/PeImage.h>

#include "CommonLib.h"
#include "Compress.h"
#include "Crc32.h"
#include "EfiUtilityMsgs.h"
#include "ParseInf.h"

//
// GenSec Tool Information
//
#define UTILITY_NAME            "GenSec"
#define UTILITY_MAJOR_VERSION   0
#define UTILITY_MINOR_VERSION   1

#define MAX_SECTION_SIZE        0x1000000

STATIC CHAR8      *mSectionTypeName[] = {
  NULL,                                 // 0x00 - reserved
  "EFI_SECTION_COMPRESSION",            // 0x01
  "EFI_SECTION_GUID_DEFINED",           // 0x02
  NULL,                                 // 0x03 - reserved
  NULL,                                 // 0x04 - reserved
  NULL,                                 // 0x05 - reserved
  NULL,                                 // 0x06 - reserved
  NULL,                                 // 0x07 - reserved
  NULL,                                 // 0x08 - reserved
  NULL,                                 // 0x09 - reserved
  NULL,                                 // 0x0A - reserved
  NULL,                                 // 0x0B - reserved
  NULL,                                 // 0x0C - reserved
  NULL,                                 // 0x0D - reserved
  NULL,                                 // 0x0E - reserved
  NULL,                                 // 0x0F - reserved
  "EFI_SECTION_PE32",                   // 0x10
  "EFI_SECTION_PIC",                    // 0x11
  "EFI_SECTION_TE",                     // 0x12
  "EFI_SECTION_DXE_DEPEX",              // 0x13
  "EFI_SECTION_VERSION",                // 0x14
  "EFI_SECTION_USER_INTERFACE",         // 0x15
  "EFI_SECTION_COMPATIBILITY16",        // 0x16
  "EFI_SECTION_FIRMWARE_VOLUME_IMAGE",  // 0x17
  "EFI_SECTION_FREEFORM_SUBTYPE_GUID",  // 0x18
  "EFI_SECTION_RAW",                    // 0x19
  NULL,                                 // 0x1A
  "EFI_SECTION_PEI_DEPEX",              // 0x1B
  "EFI_SECTION_SMM_DEPEX"               // 0x1C
};

STATIC CHAR8      *mCompressionTypeName[]    = { "PI_NONE", "PI_STD" };

#define EFI_GUIDED_SECTION_NONE 0x80
STATIC CHAR8      *mGUIDedSectionAttribue[]  = { "NONE", "PROCESSING_REQUIRED", "AUTH_STATUS_VALID"};

STATIC CHAR8 *mAlignName[] = {
  "1", "2", "4", "8", "16", "32", "64", "128", "256", "512",
  "1K", "2K", "4K", "8K", "16K", "32K", "64K"
};

//
// Crc32 GUID section related definitions.
//
typedef struct {
  EFI_GUID_DEFINED_SECTION  GuidSectionHeader;
  UINT32                    CRC32Checksum;
} CRC32_SECTION_HEADER;

STATIC EFI_GUID  mZeroGuid                 = {0x0, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}};
STATIC EFI_GUID  mEfiCrc32SectionGuid      = EFI_CRC32_GUIDED_SECTION_EXTRACTION_PROTOCOL_GUID;

STATIC
VOID 
Version (
  VOID
  )
/*++

Routine Description:

  Print out version information for this utility.

Arguments:

  None
  
Returns:

  None
  
--*/ 
{
  fprintf (stdout, "%s Version %d.%d %s \n", UTILITY_NAME, UTILITY_MAJOR_VERSION, UTILITY_MINOR_VERSION, __BUILD_VERSION);
}

STATIC
VOID
Usage (
  VOID
  )
/*++

Routine Description:

  Print Help message.

Arguments:

  VOID

Returns:

  None

--*/
{
  //
  // Summary usage
  //
  fprintf (stdout, "\nUsage: %s [options] [input_file]\n\n", UTILITY_NAME);
  
  //
  // Copyright declaration
  // 
  fprintf (stdout, "Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.\n\n");

  //
  // Details Option
  //
  fprintf (stdout, "Options:\n");
  fprintf (stdout, "  -o FileName, --outputfile FileName\n\
                        File is the SectionFile to be created.\n");
  fprintf (stdout, "  -s [SectionType], --sectiontype [SectionType]\n\
                        SectionType defined in PI spec is one type of\n\
                        EFI_SECTION_COMPRESSION, EFI_SECTION_GUID_DEFINED,\n\
                        EFI_SECTION_PE32, EFI_SECTION_PIC, EFI_SECTION_TE,\n\
                        EFI_SECTION_DXE_DEPEX, EFI_SECTION_COMPATIBILITY16,\n\
                        EFI_SECTION_USER_INTERFACE, EFI_SECTION_VERSION,\n\
                        EFI_SECTION_FIRMWARE_VOLUME_IMAGE, EFI_SECTION_RAW,\n\
                        EFI_SECTION_FREEFORM_SUBTYPE_GUID,\n\
                        EFI_SECTION_PEI_DEPEX, EFI_SECTION_SMM_DEPEX.\n\
                        if -s option is not given, \n\
                        EFI_SECTION_ALL is default section type.\n");
  fprintf (stdout, "  -c [Type], --compress [Type]\n\
                        Compress method type can be PI_NONE or PI_STD.\n\
                        if -c option is not given, PI_STD is default type.\n"); 
  fprintf (stdout, "  -g GuidValue, --vendor GuidValue\n\
                        GuidValue is one specific vendor guid value.\n\
                        Its format is xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx\n");
  fprintf (stdout, "  -l GuidHeaderLength, --HeaderLength GuidHeaderLength\n\
                        GuidHeaderLength is the size of header of guided data\n");
  fprintf (stdout, "  -r GuidAttr, --attributes GuidAttr\n\
                        GuidAttr is guid section atttributes, which may be\n\
                        PROCESSING_REQUIRED, AUTH_STATUS_VALID and NONE. \n\
                        if -r option is not given, default PROCESSING_REQUIRED\n");
  fprintf (stdout, "  -n String, --name String\n\
                        String is a NULL terminated string used in Ui section.\n");
  fprintf (stdout, "  -j Number, --buildnumber Number\n\
                        Number is an integer value between 0000 and 9999\n\
                        used in Ver section.\n");
  fprintf (stdout, "  --sectionalign SectionAlign\n\
                        SectionAlign points to section alignment, which support\n\
                        the alignment scope 1~64K. It is specified in same\n\
                        order that the section file is input.\n");
  fprintf (stdout, "  -v, --verbose         Turn on verbose output with informational messages.\n");
  fprintf (stdout, "  -q, --quiet           Disable all messages except key message and fatal error\n");
  fprintf (stdout, "  -d, --debug level     Enable debug messages, at input debug level.\n");
  fprintf (stdout, "  --version             Show program's version number and exit.\n");
  fprintf (stdout, "  -h, --help            Show this help message and exit.\n");
}

VOID
Ascii2UnicodeString (
  CHAR8    *String,
  CHAR16   *UniString
  )
/*++

Routine Description:

  Write ascii string as unicode string format to FILE 

Arguments:

  String      - Pointer to string that is written to FILE.
  UniString   - Pointer to unicode string

Returns:

  NULL

--*/
{
  while (*String != '\0') {
    *(UniString++) = (CHAR16) *(String++);
  }
  //
  // End the UniString with a NULL.
  //
  *UniString = '\0';
} 

STATUS
GenSectionCommonLeafSection (
  CHAR8   **InputFileName,
  UINT32  InputFileNum,
  UINT8   SectionType,
  UINT8   **OutFileBuffer
  )
/*++
        
Routine Description:
           
  Generate a leaf section of type other than EFI_SECTION_VERSION
  and EFI_SECTION_USER_INTERFACE. Input file must be well formed.
  The function won't validate the input file's contents. For
  common leaf sections, the input file may be a binary file.
  The utility will add section header to the file.
            
Arguments:
               
  InputFileName  - Name of the input file.
                
  InputFileNum   - Number of input files. Should be 1 for leaf section.

  SectionType    - A valid section type string

  OutFileBuffer  - Buffer pointer to Output file contents

Returns:
                       
  STATUS_ERROR            - can't continue
  STATUS_SUCCESS          - successful return

--*/
{
  UINT32                    InputFileLength;
  FILE                      *InFile;
  UINT8                     *Buffer;
  UINT32                    TotalLength;
  EFI_COMMON_SECTION_HEADER *CommonSect;
  STATUS                    Status;

  if (InputFileNum > 1) {
    Error (NULL, 0, 2000, "Invalid paramter", "more than one input file specified");
    return STATUS_ERROR;
  } else if (InputFileNum < 1) {
    Error (NULL, 0, 2000, "Invalid paramter", "no input file specified");
    return STATUS_ERROR;
  }
  //
  // Open the input file
  //
  InFile = fopen (InputFileName[0], "rb");
  if (InFile == NULL) {
    Error (NULL, 0, 0001, "Error opening file", InputFileName[0]);
    return STATUS_ERROR;
  }

  Status  = STATUS_ERROR;
  Buffer  = NULL;
  //
  // Seek to the end of the input file so we can determine its size
  //
  fseek (InFile, 0, SEEK_END);
  InputFileLength = ftell (InFile);
  fseek (InFile, 0, SEEK_SET);
  DebugMsg (NULL, 0, 9, "Input file", "File name is %s and File size is %u bytes", InputFileName[0], (unsigned) InputFileLength);
  TotalLength     = sizeof (EFI_COMMON_SECTION_HEADER) + InputFileLength;
  //
  // Size must fit in 3 bytes
  //
  if (TotalLength >= MAX_SECTION_SIZE) {
    Error (NULL, 0, 2000, "Invalid paramter", "%s file size (0x%X) exceeds section size limit(%uM).", InputFileName[0], (unsigned) TotalLength, MAX_SECTION_SIZE>>20);
    goto Done;
  }
  VerboseMsg ("the size of the created section file is %u bytes", (unsigned) TotalLength);
  //
  // Fill in the fields in the local section header structure
  //
  Buffer = (UINT8 *) malloc ((size_t) TotalLength);
  if (Buffer == NULL) {
    Error (NULL, 0, 4001, "Resource", "memory cannot be allcoated"); 
    goto Done;
  }
  CommonSect = (EFI_COMMON_SECTION_HEADER *) Buffer;
  CommonSect->Type     = SectionType;
  CommonSect->Size[0]  = (UINT8) (TotalLength & 0xff);
  CommonSect->Size[1]  = (UINT8) ((TotalLength & 0xff00) >> 8);
  CommonSect->Size[2]  = (UINT8) ((TotalLength & 0xff0000) >> 16);
  
  //
  // read data from the input file.
  //
  if (InputFileLength != 0) {
    if (fread (Buffer + sizeof (EFI_COMMON_SECTION_HEADER), (size_t) InputFileLength, 1, InFile) != 1) {
      Error (NULL, 0, 0004, "Error reading file", InputFileName[0]);
      goto Done;
    }
  }

  //
  // Set OutFileBuffer 
  //
  *OutFileBuffer = Buffer;
  Status = STATUS_SUCCESS;

Done:
  fclose (InFile);

  return Status;
}

STATIC
EFI_STATUS
StringtoAlignment (
  IN  CHAR8  *AlignBuffer,
  OUT UINT32 *AlignNumber
  )
/*++

Routine Description:

  Converts Align String to align value (1~64K). 

Arguments:

  AlignBuffer    - Pointer to Align string.
  AlignNumber    - Pointer to Align value.

Returns:

  EFI_SUCCESS             Successfully convert align string to align value.
  EFI_INVALID_PARAMETER   Align string is invalid or align value is not in scope.

--*/
{
  UINT32 Index = 0;
  //
  // Check AlignBuffer
  //
  if (AlignBuffer == NULL) {
    return EFI_INVALID_PARAMETER;
  }
  for (Index = 0; Index < sizeof (mAlignName) / sizeof (CHAR8 *); Index ++) {
    if (stricmp (AlignBuffer, mAlignName [Index]) == 0) {
      *AlignNumber = 1 << Index;
      return EFI_SUCCESS;
    }
  }
  return EFI_INVALID_PARAMETER;
}

EFI_STATUS
GetSectionContents (
  CHAR8   **InputFileName,
  UINT32  *InputFileAlign,
  UINT32  InputFileNum,
  UINT8   *FileBuffer,
  UINT32  *BufferLength
  )
/*++
        
Routine Description:
           
  Get the contents of all section files specified in InputFileName
  into FileBuffer.
            
Arguments:
               
  InputFileName  - Name of the input file.

  InputFileAlign - Alignment required by the input file data.

  InputFileNum   - Number of input files. Should be at least 1.

  FileBuffer     - Output buffer to contain data

  BufferLength   - On input, this is size of the FileBuffer. 
                   On output, this is the actual length of the data.

Returns:
                       
  EFI_SUCCESS on successful return
  EFI_INVALID_PARAMETER if InputFileNum is less than 1 or BufferLength point is NULL.
  EFI_ABORTED if unable to open input file.
  EFI_BUFFER_TOO_SMALL FileBuffer is not enough to contain all file data.
--*/
{
  UINT32                     Size;
  UINT32                     Offset;
  UINT32                     FileSize;
  UINT32                     Index;
  FILE                       *InFile;
  EFI_COMMON_SECTION_HEADER  *SectHeader;
  EFI_COMMON_SECTION_HEADER  TempSectHeader;
  EFI_TE_IMAGE_HEADER        TeHeader;
  UINT32                     TeOffset;
  EFI_GUID_DEFINED_SECTION   GuidSectHeader;
  UINT32                     HeaderSize;

  if (InputFileNum < 1) {
    Error (NULL, 0, 2000, "Invalid paramter", "must specify at least one input file");
    return EFI_INVALID_PARAMETER;
  }

  if (BufferLength == NULL) {
    Error (NULL, 0, 2000, "Invalid paramter", "BufferLength can't be NULL");
    return EFI_INVALID_PARAMETER;
  }

  Size          = 0;
  Offset        = 0;
  TeOffset      = 0;
  //
  // Go through our array of file names and copy their contents
  // to the output buffer.
  //
  for (Index = 0; Index < InputFileNum; Index++) {
    //
    // make sure section ends on a DWORD boundary
    //
    while ((Size & 0x03) != 0) {
      if (FileBuffer != NULL && Size < *BufferLength) {
        FileBuffer[Size] = 0;
      }
      Size++;
    }
    
    // 
    // Open file and read contents
    //
    InFile = fopen (InputFileName[Index], "rb");
    if (InFile == NULL) {
      Error (NULL, 0, 0001, "Error opening file", InputFileName[Index]);
      return EFI_ABORTED;
    }

    fseek (InFile, 0, SEEK_END);
    FileSize = ftell (InFile);
    fseek (InFile, 0, SEEK_SET);
    DebugMsg (NULL, 0, 9, "Input files", "the input file name is %s and the size is %u bytes", InputFileName[Index], (unsigned) FileSize); 
    //
    // Adjust section buffer when section alignment is required.
    //
    if (InputFileAlign != NULL) {
      //
      // Check this section is Te/Pe section, and Calculate the numbers of Te/Pe section.
      //
      TeOffset = 0;
      HeaderSize = sizeof (EFI_COMMON_SECTION_HEADER);
      fread (&TempSectHeader, 1, sizeof (TempSectHeader), InFile);
      if (TempSectHeader.Type == EFI_SECTION_TE) {
        fread (&TeHeader, 1, sizeof (TeHeader), InFile);
        if (TeHeader.Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
          TeOffset = TeHeader.StrippedSize - sizeof (TeHeader);
        }
      } else if (TempSectHeader.Type == EFI_SECTION_GUID_DEFINED) {
        fseek (InFile, 0, SEEK_SET);
        fread (&GuidSectHeader, 1, sizeof (GuidSectHeader), InFile);
        if ((GuidSectHeader.Attributes & EFI_GUIDED_SECTION_PROCESSING_REQUIRED) == 0) {
          HeaderSize = GuidSectHeader.DataOffset;
        }
      } 

      fseek (InFile, 0, SEEK_SET);

      //
      // Revert TeOffset to the converse value relative to Alignment
      // This is to assure the original PeImage Header at Alignment.
      //
      if (TeOffset != 0) {
        TeOffset = InputFileAlign [Index] - (TeOffset % InputFileAlign [Index]);
        TeOffset = TeOffset % InputFileAlign [Index];
      }

      //
      // make sure section data meet its alignment requirement by adding one raw pad section.
      //
      if ((InputFileAlign [Index] != 0) && (((Size + HeaderSize + TeOffset) % InputFileAlign [Index]) != 0)) {
        Offset = (Size + sizeof (EFI_COMMON_SECTION_HEADER) + HeaderSize + TeOffset + InputFileAlign [Index] - 1) & ~(InputFileAlign [Index] - 1);
        Offset = Offset - Size - HeaderSize - TeOffset;
         
        if (FileBuffer != NULL && ((Size + Offset) < *BufferLength)) {
          memset (FileBuffer + Size, 0, Offset);
          SectHeader          = (EFI_COMMON_SECTION_HEADER *) (FileBuffer + Size);
          SectHeader->Type    = EFI_SECTION_RAW;
          SectHeader->Size[0] = (UINT8) (Offset & 0xff);
          SectHeader->Size[1] = (UINT8) ((Offset & 0xff00) >> 8);
          SectHeader->Size[2] = (UINT8) ((Offset & 0xff0000) >> 16);
        }
        DebugMsg (NULL, 0, 9, "Pad raw section for section data alignment", "Pad Raw section size is %u", (unsigned) Offset);

        Size = Size + Offset;
      }
    }

    //
    // Now read the contents of the file into the buffer
    // Buffer must be enough to contain the file content.
    //
    if ((FileSize > 0) && (FileBuffer != NULL) && ((Size + FileSize) <= *BufferLength)) {
      if (fread (FileBuffer + Size, (size_t) FileSize, 1, InFile) != 1) {
        Error (NULL, 0, 0004, "Error reading file", InputFileName[Index]);
        fclose (InFile);
        return EFI_ABORTED;
      }
    }

    fclose (InFile);
    Size += FileSize;
  }
  
  //
  // Set the real required buffer size.
  //
  if (Size > *BufferLength) {
    *BufferLength = Size;
    return EFI_BUFFER_TOO_SMALL;
  } else {
    *BufferLength = Size;
    return EFI_SUCCESS;
  }
}

EFI_STATUS
GenSectionCompressionSection (
  CHAR8   **InputFileName,
  UINT32  *InputFileAlign,
  UINT32  InputFileNum,
  UINT8   SectCompSubType,
  UINT8   **OutFileBuffer
  )
/*++
        
Routine Description:
           
  Generate an encapsulating section of type EFI_SECTION_COMPRESSION
  Input file must be already sectioned. The function won't validate
  the input files' contents. Caller should hand in files already 
  with section header.
            
Arguments:
               
  InputFileName  - Name of the input file.

  InputFileAlign - Alignment required by the input file data.

  InputFileNum   - Number of input files. Should be at least 1.

  SectCompSubType - Specify the compression algorithm requested. 
  
  OutFileBuffer   - Buffer pointer to Output file contents

Returns:
                       
  EFI_SUCCESS           on successful return
  EFI_INVALID_PARAMETER if InputFileNum is less than 1
  EFI_ABORTED           if unable to open input file.
  EFI_OUT_OF_RESOURCES  No resource to complete the operation.
--*/
{
  UINT32                  TotalLength;
  UINT32                  InputLength;
  UINT32                  CompressedLength;
  UINT8                   *FileBuffer;
  UINT8                   *OutputBuffer;
  EFI_STATUS              Status;
  EFI_COMPRESSION_SECTION *CompressionSect;
  COMPRESS_FUNCTION       CompressFunction;

  InputLength       = 0;
  FileBuffer        = NULL;
  OutputBuffer      = NULL;
  CompressedLength  = 0;
  //
  // read all input file contents into a buffer
  // first get the size of all file contents
  //
  Status = GetSectionContents (
            InputFileName,
            InputFileAlign,
            InputFileNum,
            FileBuffer,
            &InputLength
            );

  if (Status == EFI_BUFFER_TOO_SMALL) {
    FileBuffer = (UINT8 *) malloc (InputLength);
    if (FileBuffer == NULL) {
      Error (NULL, 0, 4001, "Resource", "memory cannot be allcoated");
      return EFI_OUT_OF_RESOURCES;
    }
    //
    // read all input file contents into a buffer
    //
    Status = GetSectionContents (
              InputFileName,
              InputFileAlign,
              InputFileNum,
              FileBuffer,
              &InputLength
              );
  }

  if (EFI_ERROR (Status)) {
    if (FileBuffer != NULL) {
      free (FileBuffer);
    }
    return Status;
  }

  CompressFunction = NULL;

  //
  // Now data is in FileBuffer, compress the data
  //
  switch (SectCompSubType) {
  case EFI_NOT_COMPRESSED:
    CompressedLength = InputLength;
    //
    // Copy file buffer to the none compressed data.
    //
    OutputBuffer = malloc (CompressedLength + sizeof (EFI_COMPRESSION_SECTION));
    if (OutputBuffer == NULL) {
      free (FileBuffer);
      return EFI_OUT_OF_RESOURCES;
    }
    memcpy (OutputBuffer + sizeof (EFI_COMPRESSION_SECTION), FileBuffer, CompressedLength);
    FileBuffer = OutputBuffer;
    break;

  case EFI_STANDARD_COMPRESSION:
    CompressFunction = (COMPRESS_FUNCTION) EfiCompress;
    break;

  default:
    Error (NULL, 0, 2000, "Invalid paramter", "unknown compression type");
    free (FileBuffer);
    return EFI_ABORTED;
  }

  if (CompressFunction != NULL) {

    Status = CompressFunction (FileBuffer, InputLength, OutputBuffer, &CompressedLength);
    if (Status == EFI_BUFFER_TOO_SMALL) {
      OutputBuffer = malloc (CompressedLength + sizeof (EFI_COMPRESSION_SECTION));
      if (!OutputBuffer) {
        free (FileBuffer);
        return EFI_OUT_OF_RESOURCES;
      }

      Status = CompressFunction (FileBuffer, InputLength, OutputBuffer + sizeof (EFI_COMPRESSION_SECTION), &CompressedLength);
    }

    free (FileBuffer);
    FileBuffer = OutputBuffer;

    if (EFI_ERROR (Status)) {
      if (FileBuffer != NULL) {
        free (FileBuffer);
      }

      return Status;
    }
  }

  DebugMsg (NULL, 0, 9, "comprss file size", 
            "the original section size is %d bytes and the compressed section size is %u bytes", (unsigned) InputLength, (unsigned) CompressedLength);
  TotalLength = CompressedLength + sizeof (EFI_COMPRESSION_SECTION);
  if (TotalLength >= MAX_SECTION_SIZE) {
    Error (NULL, 0, 2000, "Invalid paramter", "The size of all files exceeds section size limit(%uM).", MAX_SECTION_SIZE>>20);
    if (FileBuffer != NULL) {
      free (FileBuffer);
    }
    if (OutputBuffer != NULL) {
      free (OutputBuffer);
    }
    return STATUS_ERROR;
  }
  VerboseMsg ("the size of the created section file is %u bytes", (unsigned) TotalLength);

  //
  // Add the section header for the compressed data
  //
  CompressionSect = (EFI_COMPRESSION_SECTION *) FileBuffer;
  
  CompressionSect->CommonHeader.Type     = EFI_SECTION_COMPRESSION;
  CompressionSect->CommonHeader.Size[0]  = (UINT8) (TotalLength & 0xff);
  CompressionSect->CommonHeader.Size[1]  = (UINT8) ((TotalLength & 0xff00) >> 8);
  CompressionSect->CommonHeader.Size[2]  = (UINT8) ((TotalLength & 0xff0000) >> 16);
  CompressionSect->CompressionType       = SectCompSubType;
  CompressionSect->UncompressedLength    = InputLength;

  //
  // Set OutFileBuffer 
  //
  *OutFileBuffer = FileBuffer;

  return EFI_SUCCESS;
}

EFI_STATUS
GenSectionGuidDefinedSection (
  CHAR8    **InputFileName,
  UINT32   *InputFileAlign,
  UINT32   InputFileNum,
  EFI_GUID *VendorGuid,
  UINT16   DataAttribute,
  UINT32   DataHeaderSize,
  UINT8    **OutFileBuffer
  )
/*++
        
Routine Description:
           
  Generate an encapsulating section of type EFI_SECTION_GUID_DEFINED
  Input file must be already sectioned. The function won't validate
  the input files' contents. Caller should hand in files already 
  with section header.
            
Arguments:
               
  InputFileName - Name of the input file.
                
  InputFileAlign - Alignment required by the input file data.

  InputFileNum  - Number of input files. Should be at least 1.

  VendorGuid    - Specify vendor guid value.

  DataAttribute - Specify attribute for the vendor guid data. 
  
  DataHeaderSize- Guided Data Header Size
  
  OutFileBuffer   - Buffer pointer to Output file contents

Returns:
                       
  EFI_SUCCESS on successful return
  EFI_INVALID_PARAMETER if InputFileNum is less than 1
  EFI_ABORTED if unable to open input file.
  EFI_OUT_OF_RESOURCES  No resource to complete the operation.

--*/
{
  UINT32                TotalLength;
  UINT32                InputLength;
  UINT32                Offset;
  UINT8                 *FileBuffer;
  UINT32                Crc32Checksum;
  EFI_STATUS            Status;
  CRC32_SECTION_HEADER  *Crc32GuidSect;
  EFI_GUID_DEFINED_SECTION  *VendorGuidSect;

  InputLength = 0;
  Offset      = 0;
  FileBuffer  = NULL;

  if (CompareGuid (VendorGuid, &mZeroGuid) == 0) {
    Offset = sizeof (CRC32_SECTION_HEADER);
  } else {
    Offset = sizeof (EFI_GUID_DEFINED_SECTION);
  }

  //
  // read all input file contents into a buffer
  // first get the size of all file contents
  //
  Status = GetSectionContents (
            InputFileName,
            InputFileAlign,
            InputFileNum,
            FileBuffer,
            &InputLength
            );

  if (Status == EFI_BUFFER_TOO_SMALL) {
    FileBuffer = (UINT8 *) malloc (InputLength + Offset);
    if (FileBuffer == NULL) {
      Error (NULL, 0, 4001, "Resource", "memory cannot be allcoated");
      return EFI_OUT_OF_RESOURCES;
    }
    //
    // read all input file contents into a buffer
    //
    Status = GetSectionContents (
              InputFileName,
              InputFileAlign,
              InputFileNum,
              FileBuffer + Offset,
              &InputLength
              );
  }

  if (EFI_ERROR (Status)) {
    if (FileBuffer != NULL) {
      free (FileBuffer);
    }
    Error (NULL, 0, 0001, "Error opening file for reading", InputFileName[0]);
    return Status;
  }

  if (InputLength == 0) {
    Error (NULL, 0, 2000, "Invalid parameter", "the size of input file %s can't be zero", InputFileName);
    return EFI_NOT_FOUND;
  }

  //
  // Now data is in FileBuffer + Offset
  //
  if (CompareGuid (VendorGuid, &mZeroGuid) == 0) {
    //
    // Default Guid section is CRC32.
    //
    Crc32Checksum = 0;
    CalculateCrc32 (FileBuffer + Offset, InputLength, &Crc32Checksum);

    TotalLength = InputLength + sizeof (CRC32_SECTION_HEADER);
    if (TotalLength >= MAX_SECTION_SIZE) {
      Error (NULL, 0, 2000, "Invalid paramter", "The size of all files exceeds section size limit(%uM).", MAX_SECTION_SIZE>>20);
      free (FileBuffer);
      return STATUS_ERROR;
    }
    
    Crc32GuidSect = (CRC32_SECTION_HEADER *) FileBuffer;
    Crc32GuidSect->GuidSectionHeader.CommonHeader.Type     = EFI_SECTION_GUID_DEFINED;
    Crc32GuidSect->GuidSectionHeader.CommonHeader.Size[0]  = (UINT8) (TotalLength & 0xff);
    Crc32GuidSect->GuidSectionHeader.CommonHeader.Size[1]  = (UINT8) ((TotalLength & 0xff00) >> 8);
    Crc32GuidSect->GuidSectionHeader.CommonHeader.Size[2]  = (UINT8) ((TotalLength & 0xff0000) >> 16);
    memcpy (&(Crc32GuidSect->GuidSectionHeader.SectionDefinitionGuid), &mEfiCrc32SectionGuid, sizeof (EFI_GUID));
    Crc32GuidSect->GuidSectionHeader.Attributes  = EFI_GUIDED_SECTION_AUTH_STATUS_VALID;
    Crc32GuidSect->GuidSectionHeader.DataOffset  = sizeof (CRC32_SECTION_HEADER);
    Crc32GuidSect->CRC32Checksum                 = Crc32Checksum;
    DebugMsg (NULL, 0, 9, "Guided section", "Data offset is %u", Crc32GuidSect->GuidSectionHeader.DataOffset);

  } else {
    TotalLength = InputLength + sizeof (EFI_GUID_DEFINED_SECTION);
    if (TotalLength >= MAX_SECTION_SIZE) {
      Error (NULL, 0, 2000, "Invalid paramter", "The size of all files exceeds section size limit(%uM).", MAX_SECTION_SIZE>>20);
      free (FileBuffer);
      return STATUS_ERROR;
    }

    VendorGuidSect = (EFI_GUID_DEFINED_SECTION *) FileBuffer;
    VendorGuidSect->CommonHeader.Type     = EFI_SECTION_GUID_DEFINED;
    VendorGuidSect->CommonHeader.Size[0]  = (UINT8) (TotalLength & 0xff);
    VendorGuidSect->CommonHeader.Size[1]  = (UINT8) ((TotalLength & 0xff00) >> 8);
    VendorGuidSect->CommonHeader.Size[2]  = (UINT8) ((TotalLength & 0xff0000) >> 16);
    memcpy (&(VendorGuidSect->SectionDefinitionGuid), VendorGuid, sizeof (EFI_GUID));
    VendorGuidSect->Attributes  = DataAttribute;
    VendorGuidSect->DataOffset  = (UINT16) (sizeof (EFI_GUID_DEFINED_SECTION) + DataHeaderSize);
    DebugMsg (NULL, 0, 9, "Guided section", "Data offset is %u", VendorGuidSect->DataOffset);
  }
  VerboseMsg ("the size of the created section file is %u bytes", (unsigned) TotalLength);
  
  //
  // Set OutFileBuffer 
  //
  *OutFileBuffer = FileBuffer;

  return EFI_SUCCESS;
}

int
main (
  int  argc,
  char *argv[]
  )
/*++

Routine Description:

  Main

Arguments:

  command line parameters

Returns:

  EFI_SUCCESS    Section header successfully generated and section concatenated.
  EFI_ABORTED    Could not generate the section
  EFI_OUT_OF_RESOURCES  No resource to complete the operation.

--*/
{
  UINT32                    Index;
  UINT32                    InputFileNum;
  FILE                      *OutFile;
  CHAR8                     **InputFileName;
  CHAR8                     *OutputFileName;
  CHAR8                     *SectionName;
  CHAR8                     *CompressionName;
  CHAR8                     *StringBuffer;
  EFI_GUID                  VendorGuid = mZeroGuid;
  int                       VersionNumber;
  UINT8                     SectType;
  UINT8                     SectCompSubType;
  UINT16                    SectGuidAttribute; 
  UINT64                    SectGuidHeaderLength;
  EFI_VERSION_SECTION       *VersionSect;
  EFI_USER_INTERFACE_SECTION *UiSect;
  UINT32                    InputLength;
  UINT8                     *OutFileBuffer;
  EFI_STATUS                Status;
  UINT64                    LogLevel;
  UINT32                    *InputFileAlign;
  UINT32                    InputFileAlignNum;

  InputFileAlign        = NULL;
  InputFileAlignNum     = 0;
  InputFileName         = NULL;
  OutputFileName        = NULL;
  SectionName           = NULL;
  CompressionName       = NULL;
  StringBuffer          = "";
  OutFile               = NULL;
  VersionNumber         = 0;
  InputFileNum          = 0;
  SectType              = EFI_SECTION_ALL;
  SectCompSubType       = 0;
  SectGuidAttribute     = EFI_GUIDED_SECTION_NONE;
  OutFileBuffer         = NULL;
  InputLength           = 0;
  Status                = STATUS_SUCCESS;
  LogLevel              = 0;
  SectGuidHeaderLength  = 0;
  VersionSect           = NULL;
  UiSect                = NULL;
  
  SetUtilityName (UTILITY_NAME);
  
  if (argc == 1) {
    Error (NULL, 0, 1001, "Missing options", "No options input");
    Usage ();
    return STATUS_ERROR;
  }

  //
  // Parse command line
  //
  argc --;
  argv ++;

  if ((stricmp (argv[0], "-h") == 0) || (stricmp (argv[0], "--help") == 0)) {
    Version ();
    Usage ();
    return STATUS_SUCCESS;    
  }

  if (stricmp (argv[0], "--version") == 0) {
    Version ();
    return STATUS_SUCCESS;    
  }

  while (argc > 0) {
    if ((stricmp (argv[0], "-s") == 0) || (stricmp (argv[0], "--SectionType") == 0)) {
      SectionName = argv[1];
      if (SectionName == NULL) {
        Error (NULL, 0, 1003, "Invalid option value", "Section Type can't be NULL");
        goto Finish;
      }
      argc -= 2;
      argv += 2;
      continue; 
    }

    if ((stricmp (argv[0], "-o") == 0) || (stricmp (argv[0], "--outputfile") == 0)) {
      OutputFileName = argv[1];
      if (OutputFileName == NULL) {
        Error (NULL, 0, 1003, "Invalid option value", "Output file can't be NULL");
        goto Finish;
      }
      argc -= 2;
      argv += 2;
      continue; 
    }

    if ((stricmp (argv[0], "-c") == 0) || (stricmp (argv[0], "--compress") == 0)) {
      CompressionName = argv[1];
      if (CompressionName == NULL) {
        Error (NULL, 0, 1003, "Invalid option value", "Compression Type can't be NULL");
        goto Finish;
      }
      argc -= 2;
      argv += 2;
      continue;
    }

    if ((stricmp (argv[0], "-g") == 0) || (stricmp (argv[0], "--vendor") == 0)) {
      Status = StringToGuid (argv[1], &VendorGuid);
      if (EFI_ERROR (Status)) {
        Error (NULL, 0, 1003, "Invalid option value", "%s = %s", argv[0], argv[1]);
        goto Finish;
      }
      argc -= 2;
      argv += 2;
      continue;
    }

    if ((stricmp (argv[0], "-r") == 0) || (stricmp (argv[0], "--attributes") == 0)) {
      if (stricmp (argv[1], mGUIDedSectionAttribue[EFI_GUIDED_SECTION_PROCESSING_REQUIRED]) == 0) {
        SectGuidAttribute |= EFI_GUIDED_SECTION_PROCESSING_REQUIRED;
      } else if (stricmp (argv[1], mGUIDedSectionAttribue[EFI_GUIDED_SECTION_AUTH_STATUS_VALID]) == 0) {
        SectGuidAttribute |= EFI_GUIDED_SECTION_AUTH_STATUS_VALID;
      } else if (stricmp (argv[1], mGUIDedSectionAttribue[0]) == 0) {
        //
        // NONE attribute
        //
        SectGuidAttribute |= EFI_GUIDED_SECTION_NONE;
      } else {
        Error (NULL, 0, 1003, "Invalid option value", "%s = %s", argv[0], argv[1]);
        goto Finish;
      }
      argc -= 2;
      argv += 2;
      continue;
    }

    if ((stricmp (argv[0], "-l") == 0) || (stricmp (argv[0], "--HeaderLength") == 0)) {
      Status = AsciiStringToUint64 (argv[1], FALSE, &SectGuidHeaderLength);
      if (EFI_ERROR (Status)) {
        Error (NULL, 0, 1003, "Invalid option value for GuidHeaderLength", "%s = %s", argv[0], argv[1]);
        goto Finish;
      }
      argc -= 2;
      argv += 2;
      continue;
    }

    if ((stricmp (argv[0], "-n") == 0) || (stricmp (argv[0], "--name") == 0)) {
      StringBuffer = argv[1];
      if (StringBuffer == NULL) {
        Error (NULL, 0, 1003, "Invalid option value", "Name can't be NULL");
        goto Finish;
      }
      argc -= 2;
      argv += 2;
      continue;
    }

    if ((stricmp (argv[0], "-j") == 0) || (stricmp (argv[0], "--buildnumber") == 0)) {
      if (argv[1] == NULL) {
        Error (NULL, 0, 1003, "Invalid option value", "build number can't be NULL");
        goto Finish;
      }
      //
      // Verify string is a integrator number
      //
      for (Index = 0; Index < strlen (argv[1]); Index++) {
        if ((argv[1][Index] != '-') && (isdigit ((int)argv[1][Index]) == 0)) {
          Error (NULL, 0, 1003, "Invalid option value", "%s = %s", argv[0], argv[1]);
          goto Finish;
        }
      }

      sscanf (argv[1], "%d", &VersionNumber);
      argc -= 2;
      argv += 2;
      continue;
    }

    if ((stricmp (argv[0], "-v") == 0) || (stricmp (argv[0], "--verbose") == 0)) {
      SetPrintLevel (VERBOSE_LOG_LEVEL);
      VerboseMsg ("Verbose output Mode Set!");
      argc --;
      argv ++;
      continue;
    }

    if ((stricmp (argv[0], "-q") == 0) || (stricmp (argv[0], "--quiet") == 0)) {
      SetPrintLevel (KEY_LOG_LEVEL);
      KeyMsg ("Quiet output Mode Set!");
      argc --;
      argv ++;
      continue;
    }

    if ((stricmp (argv[0], "-d") == 0) || (stricmp (argv[0], "--debug") == 0)) {
      Status = AsciiStringToUint64 (argv[1], FALSE, &LogLevel);
      if (EFI_ERROR (Status)) {
        Error (NULL, 0, 1003, "Invalid option value", "%s = %s", argv[0], argv[1]);
        goto Finish;
      }
      if (LogLevel > 9) {
        Error (NULL, 0, 1003, "Invalid option value", "Debug Level range is 0~9, currnt input level is %d", (int) LogLevel);
        goto Finish;
      }
      SetPrintLevel (LogLevel);
      DebugMsg (NULL, 0, 9, "Debug Mode Set", "Debug Output Mode Level %s is set!", argv[1]);
      argc -= 2;
      argv += 2;
      continue;
    }

    //
    // Section File alignment requirement
    //
    if (stricmp (argv[0], "--sectionalign") == 0) {
      if (InputFileAlignNum == 0) {
        InputFileAlign = (UINT32 *) malloc (MAXIMUM_INPUT_FILE_NUM * sizeof (UINT32));
        if (InputFileAlign == NULL) {
          Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
          return 1;
        }
        memset (InputFileAlign, 1, MAXIMUM_INPUT_FILE_NUM * sizeof (UINT32));
      } else if (InputFileAlignNum % MAXIMUM_INPUT_FILE_NUM == 0) {
        InputFileAlign = (UINT32 *) realloc (
          InputFileAlign,
          (InputFileNum + MAXIMUM_INPUT_FILE_NUM) * sizeof (UINT32)
          );

        if (InputFileAlign == NULL) {
          Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
          return 1;
        }
        memset (&(InputFileAlign[InputFileNum]), 1, (MAXIMUM_INPUT_FILE_NUM * sizeof (UINT32)));
      }
      
      Status = StringtoAlignment (argv[1], &(InputFileAlign[InputFileAlignNum]));
      if (EFI_ERROR (Status)) {
        Error (NULL, 0, 1003, "Invalid option value", "%s = %s", argv[0], argv[1]);
        goto Finish;
      }
      argc -= 2;
      argv += 2;
      InputFileAlignNum ++;
      continue; 
    }

    //
    // Get Input file name
    //
    if ((InputFileNum == 0) && (InputFileName == NULL)) {
      InputFileName = (CHAR8 **) malloc (MAXIMUM_INPUT_FILE_NUM * sizeof (CHAR8 *));
      if (InputFileName == NULL) {
        Error (NULL, 0, 4001, "Resource", "memory cannot be allcoated");
        return 1;
      }
      memset (InputFileName, 0, (MAXIMUM_INPUT_FILE_NUM * sizeof (CHAR8 *)));
    } else if (InputFileNum % MAXIMUM_INPUT_FILE_NUM == 0) {
      //
      // InputFileName buffer too small, need to realloc
      //
      InputFileName = (CHAR8 **) realloc (
                                  InputFileName,
                                  (InputFileNum + MAXIMUM_INPUT_FILE_NUM) * sizeof (CHAR8 *)
                                  );

      if (InputFileName == NULL) {
        Error (NULL, 0, 4001, "Resource", "memory cannot be allcoated");
        return 1;
      }
      memset (&(InputFileName[InputFileNum]), 0, (MAXIMUM_INPUT_FILE_NUM * sizeof (CHAR8 *)));
    }

    InputFileName[InputFileNum++] = argv[0];
    argc --;
    argv ++;
  }

  if (InputFileAlignNum > 0 && InputFileAlignNum != InputFileNum) {
    Error (NULL, 0, 1003, "Invalid option", "section alignment must be set for each section");
    goto Finish;
  }

  VerboseMsg ("%s tool start.", UTILITY_NAME);

  //
  // Parse all command line parameters to get the corresponding section type.
  //
  VerboseMsg ("Section type is %s", SectionName);
  if (SectionName == NULL) {
    //
    // No specified Section type, default is SECTION_ALL.
    //
    SectType = EFI_SECTION_ALL;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_COMPRESSION]) == 0) {
    SectType     = EFI_SECTION_COMPRESSION;
    if (CompressionName == NULL) {
      //
      // Default is PI_STD compression algorithm.
      //
      SectCompSubType = EFI_STANDARD_COMPRESSION;
    } else if (stricmp (CompressionName, mCompressionTypeName[EFI_NOT_COMPRESSED]) == 0) {
      SectCompSubType = EFI_NOT_COMPRESSED;
    } else if (stricmp (CompressionName, mCompressionTypeName[EFI_STANDARD_COMPRESSION]) == 0) {
      SectCompSubType = EFI_STANDARD_COMPRESSION;
    } else {
      Error (NULL, 0, 1003, "Invalid option value", "--compress = %s", CompressionName);
      goto Finish;
    }
    VerboseMsg ("Compress method is %s", mCompressionTypeName [SectCompSubType]);
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_GUID_DEFINED]) == 0) {
    SectType     = EFI_SECTION_GUID_DEFINED;
    
    if ((SectGuidAttribute & EFI_GUIDED_SECTION_NONE) != 0) {
      //
      // NONE attribute, clear attribute value.
      //
      SectGuidAttribute = SectGuidAttribute & ~EFI_GUIDED_SECTION_NONE;
    }
    VerboseMsg ("Vendor Guid is %08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X", 
                (unsigned) VendorGuid.Data1,
                VendorGuid.Data2,
                VendorGuid.Data3,
                VendorGuid.Data4[0],
                VendorGuid.Data4[1],
                VendorGuid.Data4[2],
                VendorGuid.Data4[3],
                VendorGuid.Data4[4],
                VendorGuid.Data4[5],
                VendorGuid.Data4[6],
                VendorGuid.Data4[7]);
    if ((SectGuidAttribute & EFI_GUIDED_SECTION_PROCESSING_REQUIRED) != 0) {
      VerboseMsg ("Guid Attribute is %s", mGUIDedSectionAttribue[EFI_GUIDED_SECTION_PROCESSING_REQUIRED]);
    }
    if ((SectGuidAttribute & EFI_GUIDED_SECTION_AUTH_STATUS_VALID) != 0) {
      VerboseMsg ("Guid Attribute is %s", mGUIDedSectionAttribue[EFI_GUIDED_SECTION_AUTH_STATUS_VALID]);
    }
    if (SectGuidHeaderLength != 0) {
      VerboseMsg ("Guid Data Header size is 0x%llx", (unsigned long long) SectGuidHeaderLength);
    }
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_PE32]) == 0) {
    SectType = EFI_SECTION_PE32;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_PIC]) == 0) {
    SectType = EFI_SECTION_PIC;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_TE]) == 0) {
    SectType = EFI_SECTION_TE;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_DXE_DEPEX]) == 0) {
    SectType = EFI_SECTION_DXE_DEPEX;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_SMM_DEPEX]) == 0) {
    SectType = EFI_SECTION_SMM_DEPEX;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_VERSION]) == 0) {
    SectType = EFI_SECTION_VERSION;
    if (VersionNumber < 0 || VersionNumber > 9999) {
      Error (NULL, 0, 1003, "Invalid option value", "%d is not in 0~9999", VersionNumber);
      goto Finish;
    }
    VerboseMsg ("Version section number is %d", VersionNumber);
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_USER_INTERFACE]) == 0) {
    SectType = EFI_SECTION_USER_INTERFACE;
    if (StringBuffer[0] == '\0') {
      Error (NULL, 0, 1001, "Missing option", "user interface string");
      goto Finish;
    }
    VerboseMsg ("UI section string name is %s", StringBuffer);
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_COMPATIBILITY16]) == 0) {
    SectType = EFI_SECTION_COMPATIBILITY16;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_FIRMWARE_VOLUME_IMAGE]) == 0) {
    SectType = EFI_SECTION_FIRMWARE_VOLUME_IMAGE;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_FREEFORM_SUBTYPE_GUID]) == 0) {
    SectType = EFI_SECTION_FREEFORM_SUBTYPE_GUID;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_RAW]) == 0) {
    SectType = EFI_SECTION_RAW;
  } else if (stricmp (SectionName, mSectionTypeName[EFI_SECTION_PEI_DEPEX]) == 0) {
    SectType = EFI_SECTION_PEI_DEPEX;
  } else {
    Error (NULL, 0, 1003, "Invalid option value", "SectionType = %s", SectionName);
    goto Finish;
  }
  
  //
  // GuidValue is only required by Guided section.
  //
  if ((SectType != EFI_SECTION_GUID_DEFINED) && (CompareGuid (&VendorGuid, &mZeroGuid) != 0)) {
    fprintf (stdout, "Warning: the input guid value is not required for this section type %s\n", SectionName);
  }
  
  //
  // Check whether there is input file
  //  
  if ((SectType != EFI_SECTION_VERSION) && (SectType != EFI_SECTION_USER_INTERFACE)) {
    //
    // The input file are required for other section type.
    //
    if (InputFileNum == 0) {
      Error (NULL, 0, 1001, "Missing options", "Input files");
      goto Finish;
    }
  }
  //
  // Check whether there is output file
  //
  for (Index = 0; Index < InputFileNum; Index ++) {
    VerboseMsg ("the %uth input file name is %s", (unsigned) Index, InputFileName[Index]);
  }
  if (OutputFileName == NULL) {
    Error (NULL, 0, 1001, "Missing options", "Output file");
    goto Finish;
    // OutFile = stdout;
  }
  VerboseMsg ("Output file name is %s", OutputFileName);

  //
  // At this point, we've fully validated the command line, and opened appropriate
  // files, so let's go and do what we've been asked to do...
  //
  //
  // Within this switch, build and write out the section header including any
  // section type specific pieces.  If there's an input file, it's tacked on later
  //
  switch (SectType) {
  case EFI_SECTION_COMPRESSION:
    if (InputFileAlign != NULL) {
      free (InputFileAlign);
      InputFileAlign = NULL;
    }
    Status = GenSectionCompressionSection (
              InputFileName,
              InputFileAlign,
              InputFileNum,
              SectCompSubType,
              &OutFileBuffer
              );
    break;

  case EFI_SECTION_GUID_DEFINED:
    if (InputFileAlign != NULL && (CompareGuid (&VendorGuid, &mZeroGuid) != 0)) {
      //
      // Only process alignment for the default known CRC32 guided section.
      // For the unknown guided section, the alignment is processed when the dummy all section (EFI_SECTION_ALL) is generated.
      //
      free (InputFileAlign);
      InputFileAlign = NULL;
    }
    Status = GenSectionGuidDefinedSection (
              InputFileName,
              InputFileAlign,
              InputFileNum,
              &VendorGuid,
              SectGuidAttribute,
              (UINT32) SectGuidHeaderLength,
              &OutFileBuffer
              );
    break;

  case EFI_SECTION_VERSION:
    Index           = sizeof (EFI_COMMON_SECTION_HEADER);
    //
    // 2 bytes for the build number UINT16
    //
    Index += 2;
    //
    // StringBuffer is ascii.. unicode is 2X + 2 bytes for terminating unicode null.
    //
    Index += (strlen (StringBuffer) * 2) + 2;
    OutFileBuffer = (UINT8 *) malloc (Index);
    if (OutFileBuffer == NULL) {
      Error (NULL, 0, 4001, "Resource", "memory cannot be allcoated");
      goto Finish;
    }
    VersionSect = (EFI_VERSION_SECTION *) OutFileBuffer;
    VersionSect->CommonHeader.Type     = SectType;
    VersionSect->CommonHeader.Size[0]  = (UINT8) (Index & 0xff);
    VersionSect->CommonHeader.Size[1]  = (UINT8) ((Index & 0xff00) >> 8);
    VersionSect->CommonHeader.Size[2]  = (UINT8) ((Index & 0xff0000) >> 16);
    VersionSect->BuildNumber           = (UINT16) VersionNumber;
    Ascii2UnicodeString (StringBuffer, VersionSect->VersionString);
    VerboseMsg ("the size of the created section file is %u bytes", (unsigned) Index);
    break;

  case EFI_SECTION_USER_INTERFACE:
    Index           = sizeof (EFI_COMMON_SECTION_HEADER);
    //
    // StringBuffer is ascii.. unicode is 2X + 2 bytes for terminating unicode null.
    //
    Index += (strlen (StringBuffer) * 2) + 2;
    OutFileBuffer = (UINT8 *) malloc (Index);
    if (OutFileBuffer == NULL) {
      Error (NULL, 0, 4001, "Resource", "memory cannot be allcoated");
      goto Finish;
    }
    UiSect = (EFI_USER_INTERFACE_SECTION *) OutFileBuffer;
    UiSect->CommonHeader.Type     = SectType;
    UiSect->CommonHeader.Size[0]  = (UINT8) (Index & 0xff);
    UiSect->CommonHeader.Size[1]  = (UINT8) ((Index & 0xff00) >> 8);
    UiSect->CommonHeader.Size[2]  = (UINT8) ((Index & 0xff0000) >> 16);
    Ascii2UnicodeString (StringBuffer, UiSect->FileNameString);
    VerboseMsg ("the size of the created section file is %u bytes", (unsigned) Index);
   break;

  case EFI_SECTION_ALL:
    //
    // read all input file contents into a buffer
    // first get the size of all file contents
    //
    Status = GetSectionContents (
              InputFileName,
              InputFileAlign,
              InputFileNum,
              OutFileBuffer,
              &InputLength
              );
  
    if (Status == EFI_BUFFER_TOO_SMALL) {
      OutFileBuffer = (UINT8 *) malloc (InputLength);
      if (OutFileBuffer == NULL) {
        Error (NULL, 0, 4001, "Resource", "memory cannot be allcoated");
        goto Finish;
      }
      //
      // read all input file contents into a buffer
      //
      Status = GetSectionContents (
                InputFileName,
                InputFileAlign,
                InputFileNum,
                OutFileBuffer,
                &InputLength
                );
    }
    VerboseMsg ("the size of the created section file is %u bytes", (unsigned) InputLength);
    break;
  default:
    //
    // All other section types are caught by default (they're all the same)
    //
    Status = GenSectionCommonLeafSection (
              InputFileName,
              InputFileNum,
              SectType,
              &OutFileBuffer
              );
    break;
  }
  
  if (Status != EFI_SUCCESS || OutFileBuffer == NULL) {
    Error (NULL, 0, 2000, "Status is not successful", "Status value is 0x%X", (int) Status);
	  goto Finish;
  }

  //
  // Get output file length
  //
  if (SectType != EFI_SECTION_ALL) {
    InputLength = SECTION_SIZE (OutFileBuffer);
  }
  
  //
  // Write the output file
  //
  OutFile = fopen (OutputFileName, "wb");
  if (OutFile == NULL) {
    Error (NULL, 0, 0001, "Error opening file for writing", OutputFileName);
    goto Finish;
  }

  fwrite (OutFileBuffer, InputLength, 1, OutFile);

Finish:
  if (InputFileName != NULL) {
    free (InputFileName);
  }

  if (InputFileAlign != NULL) {
    free (InputFileAlign);
  }

  if (OutFileBuffer != NULL) {
    free (OutFileBuffer);
  }

  if (OutFile != NULL) {
    fclose (OutFile);
  }
  
  VerboseMsg ("%s tool done with return code is 0x%x.", UTILITY_NAME, GetUtilityStatus ());

  return GetUtilityStatus ();
}
