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/*$$HEADER*/

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/*                    H E A D E R   I N F O R M A T I O N                     */

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// Project Name                   : ORPSoC v2

// File Name                      : bin2vmem.c

// Prepared By                    : jb, jb@orsoc.se

// Project Start                  : 2009-05-13

/*$$COPYRIGHT NOTICE*/

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/*                      C O P Y R I G H T   N O T I C E                       */

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/*

  This library is free software; you can redistribute it and/or

  modify it under the terms of the GNU Lesser General Public

  License as published by the Free Software Foundation;

  version 2.1 of the License, a copy of which is available from

  http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt.

  This library is distributed in the hope that it will be useful,

  but WITHOUT ANY WARRANTY; without even the implied warranty of

  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public

  License along with this library; if not, write to the Free Software

  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

*/

/*$$DESCRIPTION*/

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//

// Generates VMEM output to stdout from binary images.

// Use with redirection like: ./bin2vmem app.bin > app.vmem

// To change either the number of bytes per word or word per line, change

// the following defines.

// Currently output is WORD addressed, NOT byte addressed

// eg: @00000000 00000000 00000000 00000000 00000000

//     @00000004 00000000 00000000 00000000 00000000

//     @00000008 00000000 00000000 00000000 00000000

//     @0000000c 00000000 00000000 00000000 00000000

//     etc..

//

// OR

// 

// Output a list of the words, one per line, as Synplify appears to like

// specify this option with the -synfmt switch on the command line after

// the input file

// eg: ./bin2vmem data.bin -synfmt > data.vmem

//

#define WORDS_PER_LINE 4

#define BYTES_PER_WORD 4

#define FILENAME_CMDLINE_INDEX 1

#define FMT_CMDLINE_INDEX 2

#define FMT_WITH_ADDR 0

#define FMT_SYN 1

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

int main(int argc, char **argv)

{

        FILE  *fd;

        int c;

        int i = 0;

        int write_size_word=0; // Disabled by default

        unsigned int image_size;

        int output_fmt = FMT_WITH_ADDR; // 0 - standard 4 per line with address, 1 - synfmt

        // Counters keeping track of what we've printed

        int current_addr = 0;

        int word_counter = 0;

        int byte_counter = 0;

        if(argc < 2) {

          fprintf(stderr,"\n\tInsufficient options.\n");

          fprintf(stderr,"\tPlease specify a binary file to convert to VMEM\n");

          fprintf(stderr,"\n\tbin2vmem - creates vmem output to stdout from bin\n");

          fprintf(stderr,"\n\tBy default the output is word addressed 32-bit words\n");

          fprintf(stderr,"\tSpecify -synfmt on the command line after the filename\n");

          fprintf(stderr,"\tto output in the alterative format, which is a simple\n");

          fprintf(stderr,"\tlist of the data words.\n");

          fprintf(stderr,"\n");

          exit(1);

        }

        fd = fopen( argv[FILENAME_CMDLINE_INDEX], "r" );

        if (argc > 2) // check for the -synfmt switch

          {

            if (strcmp("-synfmt", argv[FMT_CMDLINE_INDEX]) == 0)

              output_fmt = FMT_SYN; // synthesis friendly format - single column, no addr

          }

        if (fd == NULL) {

                fprintf(stderr,"failed to open input file: %s\n",argv[1]);

                exit(1);

        }

        fseek(fd, 0, SEEK_END);

        image_size = ftell(fd);

        fseek(fd,0,SEEK_SET);

        if (write_size_word)

          {

            // or1200 startup method of determining size of boot image we're copying by reading out

            // the very first word in flash is used. Determine the length of this file

            fseek(fd, 0, SEEK_END);

            image_size = ftell(fd);

            fseek(fd,0,SEEK_SET);

            // Now we should have the size of the file in bytes. Let's ensure it's a word multiple

            image_size+=3;

            image_size &= 0xfffffffc;

            // Sanity check on image size

            if (image_size < 8){

              fprintf(stderr, "Bad binary image. Size too small\n");

              return 1;

            }

            // Now write out the image size

            printf("@%8x", current_addr);

            printf("%8x", image_size);

            current_addr += WORDS_PER_LINE * BYTES_PER_WORD;

          }

        // Fix for the current bootloader software! Skip the first 4 

        // bytes of application data. Hopefully it's not important. 030509 -- jb

        //for(i=0;i<4;i++)

        //  c=fgetc(fd);

        i=0;

        int starting_new_line  = 1;

        // Now write out the binary data to specified format. Either

        // more complicated, addressed format:

        // VMEM format: @ADDRESSS XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX

        // or simple, synplifyfriendly format which is just a list of

        // the words

        while ((c = fgetc(fd)) != EOF) {

          if (output_fmt == FMT_WITH_ADDR) // Default format

            {

              if (starting_new_line)

                {

                  // New line - print the current addr and then increment it

                  printf("@%.8x", current_addr);

                  current_addr += WORDS_PER_LINE;

                  starting_new_line = 0;

                }

              if (byte_counter == 0)

                printf(" ");

              printf("%.2x", (unsigned int) c); // now print the actual char

              byte_counter++;

              if (byte_counter == BYTES_PER_WORD)

                {

                  word_counter++;

                  byte_counter=0;

                }

              if (word_counter == WORDS_PER_LINE)

                {

                  printf("\n");

                  word_counter = 0;

                  starting_new_line = 1;

                }

            } // End of FMT_WITH_ADDR

          else if (output_fmt == FMT_SYN) // simple list of data words

            {

              printf("%.2x", (unsigned int) c); // now print the actual char

              byte_counter++;

              if (byte_counter == BYTES_PER_WORD)

                {

                  printf("\n");

                  byte_counter=0;

                }

            }

        }

        return 0;

}