mkcsysimg.c

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	DBG(1,"writing header for block");
	res = write_out_data(outfile, (uint8_t *)&hdr, sizeof(hdr),NULL);
	return res;

}


int
block_writeout_file(FILE *outfile, struct csys_block *block)
{
	char buf[FILE_BUF_LEN];
	size_t buflen = sizeof(buf);
	FILE *f;
	size_t len;
	int res;

	if (block->file_name == NULL)
		return 0;

	if (block->file_size == 0)
		return 0;

	errno = 0;
	f = fopen(block->file_name,"r");
	if (errno) {
		ERRS("unable to open file: %s", block->file_name);
		return ERR_FATAL;
	}

	len = block->file_size;
	while (len > 0) {
		if (len < buflen)
			buflen = len;

		/* read data from source file */
		errno = 0;
		fread(buf, buflen, 1, f);
		if (errno != 0) {
			ERRS("unable to read from file: %s", block->file_name);
			res = ERR_FATAL;
			break;
		}

		res = write_out_data(outfile, buf, buflen, block->css);
		if (res)
			break;

		len -= buflen;
	}

	fclose(f);
	return res;
}


int
block_writeout_data(FILE *outfile, struct csys_block *block)
{
	int res;
	size_t padlen;

	res = block_writeout_file(outfile, block);
	if (res)
		return res;

	/* write padding data if neccesary */
	padlen = block->size_avail - block->file_size;
	DBG(1,"padding block, length=%d", padlen);
	res = write_out_padding(outfile, padlen, block->padc, block->css);

	return res;
}


int
block_writeout_csum(FILE *outfile, struct csys_block *block)
{
	uint16_t csum;
	int res;

	if (block->size_csum == 0)
		return 0;

	DBG(1,"writing checksum for block");
	csum = HOST_TO_LE16(csum_get(block->css));
	res = write_out_data(outfile, (uint8_t *)&csum, block->size_csum, NULL);

	return res;
}


int
block_writeout(FILE *outfile, struct csys_block *block)
{
	int res;
	struct csum_state css;

	res = 0;

	if (block == NULL)
		return res;

	block->css = NULL;

	DBG(2, "writing block, file=%s, file_size=%d, space=%d",
		block->file_name, block->file_size, block->size_avail);
	res = block_writeout_hdr(outfile, block);
	if (res)
		return res;

	if (block->size_csum != 0) {
		block->css = &css;
		csum_init(&css, block->size_csum);
	}

	res = block_writeout_data(outfile, block);
	if (res)
		return res;

	res = block_writeout_csum(outfile, block);
	if (res)
		return res;

	return res;
}


int
write_out_blocks(FILE *outfile)
{
	struct csys_block *block;
	int i, res;

	res = block_writeout(outfile, boot_block);
	if (res)
		return res;

	res = block_writeout(outfile, conf_block);
	if (res)
		return res;

	res = block_writeout(outfile, webp_block);
	if (res)
		return res;

	res = block_writeout(outfile, code_block);
	if (res)
		return res;

	res = 0;
	for (i=0; i < num_blocks; i++) {
		block = &blocks[i];

		if (block->type != BLOCK_TYPE_XTRA)
			continue;

		res = block_writeout(outfile, block);
		if (res)
			break;
	}

	return res;
}


struct board_info *
find_board(char *model)
{
	struct board_info *ret;
	struct board_info *board;

	ret = NULL;
	for (board = boards; board->model != NULL; board++){
		if (strcasecmp(model, board->model) == 0) {
			ret = board;
			break;
		}
	};

	return ret;
}


int
parse_opt_board(char ch, char *arg)
{

	DBG(1,"parsing board option: -%c %s", ch, arg);

	if (board != NULL) {
		ERR("only one board option allowed");
		return ERR_FATAL;
	}

	if (required_arg(ch, arg))
		return ERR_FATAL;

	board = find_board(arg);
	if (board == NULL){
		ERR("invalid/unknown board specified: %s", arg);
		return ERR_FATAL;
	}

	return 0;
}


int
parse_opt_block(char ch, char *arg)
{
	char buf[MAX_ARG_LEN];
	char *argv[MAX_ARG_COUNT];
	int argc;
	char *p;
	struct csys_block *block;
	int i;

	if ( num_blocks > MAX_NUM_BLOCKS ) {
		ERR("too many blocks specified");
		return ERR_FATAL;
	}

	block = &blocks[num_blocks];

	/* setup default field values */
	block->need_file = 1;
	block->padc = 0xFF;

	switch (ch) {
	case 'b':
		if (boot_block) {
			WARN("only one boot block allowed");
			break;
		}
		block->type = BLOCK_TYPE_BOOT;
		boot_block = block;
		break;
	case 'c':
		if (conf_block) {
			WARN("only one config block allowed");
			break;
		}
		block->type = BLOCK_TYPE_CONF;
		conf_block = block;
		break;
	case 'w':
		if (webp_block) {
			WARN("only one web block allowed");
			break;
		}
		block->type = BLOCK_TYPE_WEBP;
		block->size_hdr = sizeof(struct csys_header);
		block->size_csum = CSUM_SIZE_8;
		block->need_file = 0;
		webp_block = block;
		break;
	case 'r':
		if (code_block) {
			WARN("only one runtime block allowed");
			break;
		}
		block->type = BLOCK_TYPE_CODE;
		block->size_hdr = sizeof(struct csys_header);
		block->size_csum = CSUM_SIZE_16;
		code_block = block;
		break;
	case 'x':
		block->type = BLOCK_TYPE_XTRA;
		break;
	default:
		ERR("unknown block type \"%c\"", ch);
		return ERR_FATAL;
	}

	argc = parse_arg(arg, buf, argv);

	i = 0;
	p = argv[i++];
	if (!is_empty_arg(p)) {
		block->file_name = strdup(p);
		if (block->file_name == NULL) {
			ERR("not enough memory");
			return ERR_FATAL;
		}
	} else if (block->need_file){
		ERR("no file specified in %s", arg);
		return ERR_FATAL;
	}

	if (block->size_hdr) {
		p = argv[i++];
		if (!is_empty_arg(p)) {
			if (str2u32(p, &block->addr) != 0) {
				ERR("invalid start address in %s", arg);
				return ERR_FATAL;
			}
			block->addr_set = 1;
		}
	}

	p = argv[i++];
	if (!is_empty_arg(p)) {
		if (str2u32(p, &block->align) != 0) {
			ERR("invalid alignment value in %s", arg);
			return ERR_FATAL;
		}
		block->align_set = 1;
	}

	p = argv[i++];
	if (!is_empty_arg(p) && (str2u8(p, &block->padc) != 0)) {
		ERR("invalid paddig character in %s", arg);
		return ERR_FATAL;
	}

	num_blocks++;

	return 0;
}


int
process_blocks(void)
{
	struct csys_block *block;
	uint32_t offs = 0;
	int i;
	int res;

	res = 0;
	/* collecting stats */
	for (i = 0; i < num_blocks; i++) {
		block = &blocks[i];
		res = block_stat_file(block);
		if (res)
			return res;
	}

	/* bootloader */
	block = boot_block;
	if (block) {
		block->size = board->boot_size;
		if (block->file_size > board->boot_size) {
			WARN("boot block is too big");
			res = ERR_INVALID_IMAGE;
		}
	}
	offs += board->boot_size;

	/* configuration data */
	block = conf_block;
	if (block) {
		block->size = board->conf_size;
		if (block->file_size > board->conf_size) {
			WARN("config block is too big");
			res = ERR_INVALID_IMAGE;
		}
	}
	offs += board->conf_size;

	/* webpages */
	block = webp_block;
	if (block) {

		memcpy(block->sig, board->sig_webp, 4);

		if (block->addr_set == 0)
			block->addr = board->addr_webp;

		if (block->align_set == 0)
			block->align = DEFAULT_BLOCK_ALIGN;

		block->size = align(offs + block->file_size + block->size_hdr +
				block->size_csum, block->align) - offs;

		if (block->size > board->webp_size_max) {
			WARN("webpages block is too big");
			res = ERR_INVALID_IMAGE;
		}

		DBG(2,"webpages start at %08x, size=%08x", offs,
				block->size);

		offs += block->size;
		if (offs > board->flash_size) {
			WARN("webp block is too big");
			res = ERR_INVALID_IMAGE;
		}
	}

	/* runtime code */
	block = code_block;
	if (block) {
		memcpy(code_block->sig, SIG_CSYS, 4);

		if (block->addr_set == 0)
			block->addr = board->addr_code;

		if (block->align_set == 0)
			block->align = DEFAULT_BLOCK_ALIGN;

		block->size = align(offs + block->file_size +
				block->size_hdr + block->size_csum,
				block->align) - offs;

		DBG(2,"code block start at %08x, size=%08x", offs,
				block->size);

		offs += block->size;
		if (offs > board->flash_size) {
			WARN("code block is too big");
			res = ERR_INVALID_IMAGE;
		}
	}

	for (i = 0; i < num_blocks; i++) {
		block = &blocks[i];

		if (block->type != BLOCK_TYPE_XTRA)
			continue;

		if (block->align_set == 0)
			block->align = DEFAULT_BLOCK_ALIGN;

		block->size = align(offs + block->file_size,
				block->align) - offs;

		DBG(2,"file %s start at %08x, size=%08x, align=%08x",
			block->file_name, offs, block->size, block->align);

		offs += block->size;
		if (offs > board->flash_size) {
			WARN("file %s is too big, size=%d, avail=%d",
				block->file_name, block->file_size,
				board->flash_size - offs);
			res = ERR_INVALID_IMAGE;
		}
	}

	for (i = 0; i < num_blocks; i++) {
		block = &blocks[i];

		block->size_avail = block->size - block->size_hdr -
			block->size_csum;

		if (block->size_avail < block->file_size) {
			WARN("file %s is too big, size=%d, avail=%d",
				block->file_name, block->file_size,
				block->size_avail);
			res = ERR_INVALID_IMAGE;
		}
	}

	return res;
}


int
main(int argc, char *argv[])
{
	int optinvalid = 0;   /* flag for invalid option */
	int c;
	int res = ERR_FATAL;

	FILE *outfile;

	progname=basename(argv[0]);

	opterr = 0;  /* could not print standard getopt error messages */
	while ( 1 ) {
		optinvalid = 0;

		c = getopt(argc, argv, "b:B:c:dhkr:vw:x:");
		if (c == -1)
			break;

		switch (c) {
		case 'b':
		case 'c':
		case 'r':
		case 'x':
			optinvalid = parse_opt_block(c,optarg);
			break;
		case 'w':
			if (optarg != NULL && *optarg == '-') {
				/* rollback */
				optind--;
				optarg = NULL;
			}
			optinvalid = parse_opt_block(c,optarg);
			break;
		case 'd':
			invalid_causes_error = 0;
			break;
		case 'k':
			keep_invalid_images = 1;
			break;
		case 'B':
			optinvalid = parse_opt_board(c,optarg);
			break;
		case 'v':
			verblevel++;
			break;
		case 'h':
			usage(EXIT_SUCCESS);
			break;
		default:
			optinvalid = 1;
			break;
		}
		if (optinvalid != 0 ){
			ERR("invalid option: -%c", optopt);
			goto out;
		}
	}

	if (board == NULL) {
		ERR("no board specified");
		goto out;
	}

	if (optind == argc) {
		ERR("no output file specified");
		goto out;
	}

	ofname = argv[optind++];

	if (optind < argc) {
		ERR("invalid option: %s", argv[optind]);
		goto out;
	}

	res = process_blocks();
	if (res == ERR_FATAL)
		goto out;

	if (res == ERR_INVALID_IMAGE) {
		if (invalid_causes_error)
			res = ERR_FATAL;

		if (keep_invalid_images == 0) {
			WARN("generation of invalid images disabled", ofname);
			goto out;
		}

		WARN("generating invalid image", ofname);
	}

	outfile = fopen(ofname, "w");
	if (outfile == NULL) {
		ERRS("could not open \"%s\" for writing", ofname);
		res = ERR_FATAL;
		goto out;
	}

	if (write_out_blocks(outfile) != 0) {
		res = ERR_FATAL;
		goto out_flush;
	}

	DBG(1,"Image file %s completed.", ofname);

out_flush:
	fflush(outfile);
	fclose(outfile);
	if (res == ERR_FATAL) {
		unlink(ofname);
	}
out:
	if (res == ERR_FATAL)
		return EXIT_FAILURE;

	return EXIT_SUCCESS;
}