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[/] [openrisc/] [trunk/] [orpsocv2/] [sw/] [utils/] [loader.c] - Rev 310
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/* Small utility that makes flash image. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include "../mad-xess/fsyst.h" unsigned int swap (unsigned int x) { return (x & 0xFF) << 24 | (x & 0xFF00) << 8 | (x & 0xFF0000) >> 8 | (x & 0xFF000000) >> 24; } /* Copies data from fi to fo. Returns nonzero if error. */ int copy_into (FILE *fo, FILE *fi) { char buf[8192]; int bread; do { bread = fread (&buf, 1, sizeof(buf), fi); if (bread != fwrite (&buf, 1, bread, fo)) return 1; } while (bread == sizeof(buf)); return 0; } /* Writes file to fo and returns error. */ int write_file (FILE *fo, struct file_struct *file) { unsigned int u; int ok = 0; u = swap(file->length); printf("%08x:%08x\n", file->length, u); if (fwrite(&u, sizeof(unsigned long), 1, fo)) ok = 1; u = swap(file->type); if (fwrite(&u, sizeof(unsigned long), 1, fo) && ok) return 0; fprintf (stderr, "Cannot write to file.\n"); return 1; } int main(int argc, char *argv[]) { int i; FILE *fo; struct file_struct file; if (argc <= 1) { printf ("Usage: loader image_file.mfs [file.mp3 [...]]\n"); return 1; } if ((fo = fopen (argv[1], "wb+")) == NULL) { fprintf (stderr, "Cannot open output file '%s'\n", argv[1]); return 2; } file.type = FT_ROOT; file.length = HEADER_SIZE; if (write_file (fo, &file)) return 3; for (i = 2; i < argc; i++) { FILE *fi = fopen (argv[i], "rb"); struct stat fi_stat; int align; if (!fi) { fprintf (stderr, "Cannot open input file '%s'\n", argv[i]); return 1; } stat (argv[i], &fi_stat); printf ("Track %i: %s (size %i)\n", i - 1, argv[i], (int)fi_stat.st_size); file.type = FT_TRACK_NO; file.length = HEADER_SIZE + sizeof (unsigned int); file.data[0] = swap(i - 1); if (write_file (fo, &file)) return 3; if (!fwrite (&file.data[0], sizeof (unsigned int), 1, fo)) { fprintf (stderr, "Cannot write to file.\n"); return 3; } file.type = FT_TRACK_NAME; align = (4 - ((strlen (argv[i]) + 1) & 3)) & 3; file.length = HEADER_SIZE + strlen (argv[i]) + 1 + align; if (write_file (fo, &file)) return 3; if (!fwrite (argv[i], strlen (argv[i]) + 1 + align, 1, fo)) { fprintf (stderr, "Cannot write to file.\n"); return 3; } file.type = FT_TRACK_DATA; align = (4 - (fi_stat.st_size & 3)) & 3; file.length = HEADER_SIZE + fi_stat.st_size + align; if (write_file (fo, &file)) return 3; copy_into(fo, fi); fwrite (&align, 1, align, fo); fclose (fi); } file.type = FT_END; file.length = 0; if (write_file (fo, &file)) return 3; printf ("Done.\n"); fclose (fo); return 0; }
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