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#include <stdio.h>

#include <stdlib.h>

#include <string.h>

/* Number of bytes before line is broken

   For example if target flash is 8 bits wide,

   define BREAK as 1. If it is 16 bits wide,

   define it as 2 etc.

*/

#define BREAK 1

int main(int argc, char **argv)

{

        FILE  *fd;

        int c;

        int i = 0;

        int write_size_word=1; // ON BY DEFAULT NOW!

        int filename_index=1;

        unsigned int image_size;

        if(argc < 2) {

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

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

                fprintf(stderr,"\tOptionally specify the option -size_word to output,\n");

                fprintf(stderr,"\tthe size of the image in the first 4 bytes. This is\n");

                fprintf(stderr,"\tused by some of the new OR1k bootloaders.\n\n");

                exit(1);

        }

        if(argc == 3)

          {

            if (strcmp("-size_word", argv[1]) == 0)

              {

                filename_index=2;

                write_size_word=1;

              }

            else if (strcmp("-size_word", argv[2]) == 0)

              {

                filename_index=1;

                write_size_word=1;

              }

          }

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

        if (fd == NULL) {

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

                exit(1);

        }

        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

            i=0;

            printf("%.2x",(image_size >> 24) & 0xff);

            if(++i==BREAK){ printf("\n"); i=0; }

            printf("%.2x",(image_size >> 16) & 0xff);

            if(++i==BREAK){ printf("\n"); i=0; }

            printf("%.2x",(image_size >> 8) & 0xff);

            if(++i==BREAK){ printf("\n"); i=0; }

            printf("%.2x",(image_size) & 0xff);

            if(++i==BREAK){ printf("\n"); i=0; }

          }

        // 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;

        // Now write out the binary data to hex format

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

                printf("%.2x", (unsigned int) c);

                if (++i == BREAK) {

                        printf("\n");

                        i = 0;

                }

        }

        return 0;

}