Add ADM5120 based edimax image generation utilities

SVN-Revision: 6840

3 files changed, 1190 insertions, 0 deletions

diff --git a/tools/firmware-utils/Makefile b/tools/firmware-utils/Makefile
index c9d9bae..2518e34 100644
--- a/tools/firmware-utils/Makefile
+++ b/tools/firmware-utils/Makefile
@@ -28,6 +28,7 @@ define Build/Compile
 	$(call cc,srec2bin)
 	$(call cc,mksyshdr)
 	$(call cc,mkmylofw)
+	$(call cc,mkcsysimg)
 endef
 
 define Build/Install
diff --git a/tools/firmware-utils/src/csysimg.h b/tools/firmware-utils/src/csysimg.h
new file mode 100644
index 0000000..c3d5767
--- /dev/null
+++ b/tools/firmware-utils/src/csysimg.h
@@ -0,0 +1,78 @@
+/*
+ *  $Id$
+ *
+ *  Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
+ *
+ *  This program was based on the code found in various Linux 
+ *  source tarballs released by Edimax for it's devices.
+ *  Original author: David Hsu <davidhsu@realtek.com.tw>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the
+ *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ */
+
+#define SIG_LEN		4
+
+#define ADM_CODE_ADDR	0x80500000
+#define ADM_WEBP_ADDR	0x10000
+#define ADM_WEBP_SIZE	0x10000
+#define ADM_BOOT_SIZE	0x8000
+#define ADM_CONF_SIZE	0x8000
+#define ADM_BOOT_SIG	"\x00\x60\x1A\x40"
+
+
+/* 
+ * Generic signatures
+ */
+#define SIG_CSYS	"CSYS"
+#define SIG_CONF	"HS\x00\x00"
+#define SIG_BOOT_RTL	"\x00\x00\x40\x21"
+
+/* 
+ * Web page signatures
+ */
+#define SIG_BR6104K	"WB4K"
+#define SIG_BR6104KP	"WBKP"
+#define SIG_BR6104IPC	"WBIP"
+#define SIG_BR6114WG	SIG_BR6104IPC
+#define SIG_BR6524K	"2-K-"
+#define SIG_BR6524KP	"2-KP"	/* FIXME: valid? */
+#define SIG_BR6524WG	"2-WG"	/* FIXME: valid? */
+#define SIG_BR6524WP	"2-WP"	/* FIXME: valid? */
+#define SIG_BR6541K	"4--K"
+#define SIG_BR6541KP	"4-KP"	/* FIXME: valid? */
+#define SIG_BR6541WP	"4-WP"	/* FIXME: valid? */
+#define SIG_EW7207APg	"EWAS"
+#define SIG_PS1205UWg	"4000"
+#define SIG_PS3205U	"5010"
+#define SIG_PS3205UWg	"5011"
+
+#define SIG_H2BR4	SIG_BR6524K
+#define SIG_H2WR54G	SIG_BR6524WG
+
+#define SIG_XRT401D	SIG_BR6104K
+#define SIG_XRT402D	SIG_BR6524K
+
+/* 
+ * CSYS image file header 
+ */
+struct csys_header {
+	unsigned char sig[SIG_LEN];
+	uint32_t addr;
+	uint32_t size;
+};
+
+
+
diff --git a/tools/firmware-utils/src/mkcsysimg.c b/tools/firmware-utils/src/mkcsysimg.c
new file mode 100644
index 0000000..073e8be
--- /dev/null
+++ b/tools/firmware-utils/src/mkcsysimg.c
@@ -0,0 +1,1111 @@
+/*
+ *  $Id$
+ *
+ *  Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
+ *
+ *  This program was based on the code found in various Linux 
+ *  source tarballs released by Edimax for it's devices.
+ *  Original author: David Hsu <davidhsu@realtek.com.tw>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the
+ *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>     /* for unlink() */
+#include <libgen.h>
+#include <getopt.h>     /* for getopt() */
+#include <stdarg.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <endian.h>     /* for __BYTE_ORDER */
+#if defined(__CYGWIN__)
+#  include <byteswap.h>
+#endif
+
+#include "csysimg.h"
+
+#if (__BYTE_ORDER == __LITTLE_ENDIAN)
+#  define HOST_TO_LE16(x)	(x)
+#  define HOST_TO_LE32(x)	(x)
+#  define LE16_TO_HOST(x)	(x)
+#  define LE32_TO_HOST(x)	(x)
+#else
+#  define HOST_TO_LE16(x)	bswap_16(x)
+#  define HOST_TO_LE32(x)	bswap_32(x)
+#  define LE16_TO_HOST(x)	bswap_16(x)
+#  define LE32_TO_HOST(x)	bswap_32(x)
+#endif
+
+#define ALIGN(x,y)	((x)+((y)-1)) & ~((y)-1)
+
+#define MAX_NUM_BLOCKS	8
+#define MAX_ARG_COUNT	32
+#define MAX_ARG_LEN	1024
+#define FILE_BUF_LEN	(16*1024)
+#define CSYS_PADC	0xFF
+
+#define BLOCK_TYPE_BOOT	0
+#define BLOCK_TYPE_CONF	1
+#define BLOCK_TYPE_WEBP	2
+#define BLOCK_TYPE_CODE	3
+#define BLOCK_TYPE_XTRA	4
+
+
+struct csum_state{
+	int	size;
+	uint16_t val;
+	uint16_t tmp;
+	int	odd;
+};
+
+
+struct csys_block {
+	int		type;	/* type of the block */
+
+	int		need_file;
+	char		*file_name;	/* name of the file */
+	uint32_t	file_size;	/* length of the file */
+
+	uint32_t	size;
+	int		size_set;
+	uint8_t		padc;
+
+	uint32_t	size_hdr;
+	uint32_t	size_csum;
+	uint32_t	size_avail;
+
+	unsigned char	sig[SIG_LEN];
+	uint32_t	addr;
+	int		addr_set;
+	struct csum_state *css;
+};
+
+
+struct board_info {
+	char *model;
+	char *name;
+	uint32_t flash_size;
+
+	char sig_boot[SIG_LEN];
+	char sig_conf[SIG_LEN];
+	char sig_webp[SIG_LEN];
+
+	uint32_t boot_size;
+	uint32_t conf_size;
+	uint32_t webp_size;
+	uint32_t webp_size_max;
+	uint32_t code_size;
+	
+	uint32_t addr_code;
+	uint32_t addr_webp;
+};
+
+#define BOARD(m, n, f, sigb, sigw, bs, cs, ws, ac, aw) {\
+	.model = m, .name = n, .flash_size = f<<20, \
+	.sig_boot = sigb, .sig_conf = SIG_CONF, .sig_webp = sigw, \
+	.boot_size = bs, .conf_size = cs, \
+	.webp_size = ws, .webp_size_max = 3*0x10000, \
+	.addr_code = ac, .addr_webp = aw \
+	}
+	
+#define BOARD_ADM(m,n,f, sigw) BOARD(m,n,f, ADM_BOOT_SIG, sigw, \
+	ADM_BOOT_SIZE, ADM_CONF_SIZE, ADM_WEBP_SIZE, \
+	ADM_CODE_ADDR, ADM_WEBP_ADDR)
+
+
+/*
+ * Globals
+ */
+char *progname;
+char *ofname = NULL;
+int verblevel = 0;
+int size_check = 1;
+
+struct board_info *board = NULL;
+
+struct csys_block *boot_block = NULL;
+struct csys_block *conf_block = NULL;
+struct csys_block *webp_block = NULL;
+struct csys_block *code_block = NULL;
+
+struct csys_block blocks[MAX_NUM_BLOCKS];
+int num_blocks = 0;
+
+
+static struct board_info boards[] = {
+	/* The original Edimax products */
+	BOARD_ADM("BR-6104K", "Edimax BR-6104K", 2, SIG_BR6104K),
+	BOARD_ADM("BR-6104KP", "Edimax BR-6104KP", 2, SIG_BR6104KP),
+	BOARD_ADM("BR-6114WG", "Edimax BR-6114WG", 2, SIG_BR6114WG),
+	BOARD_ADM("BR-6524K", "Edimax BR-6524K", 2, SIG_BR6524K),
+	BOARD_ADM("BR-6524KP", "Edimax BR-6524KP", 2, SIG_BR6524KP),
+	BOARD_ADM("BR-6524WG", "Edimax BR-6524WG", 4, SIG_BR6524WG),
+	BOARD_ADM("BR-6524WP", "Edimax BR-6524WP", 4, SIG_BR6524WP),
+	BOARD_ADM("BR-6541K", "Edimax BR-6541K", 2, SIG_BR6541K),
+	BOARD_ADM("BR-6541KP", "Edimax BR-6541K", 2, SIG_BR6541KP),
+	BOARD_ADM("BR-6541WP", "Edimax BR-6541WP", 4, SIG_BR6541WP),
+	BOARD_ADM("EW-7207APg", "Edimax EW-7207APg", 2, SIG_EW7207APg),
+	BOARD_ADM("PS-1205UWg", "Edimax PS-1205UWg", 2, SIG_PS1205UWg),
+	BOARD_ADM("PS-3205U", "Edimax PS-3205U", 2, SIG_PS3205U),
+	BOARD_ADM("PS-3205UWg", "Edimax PS-3205UWg", 2, SIG_PS3205UWg),
+
+	/* Hawking products */
+	BOARD_ADM("H2BR4", "Hawking H2BR4", 2, SIG_H2BR4),
+	BOARD_ADM("H2WR54G", "Hawking H2WR54G", 4, SIG_H2WR54G),
+
+	/* Planet products */
+	BOARD_ADM("XRT-401D", "Planet XRT-401D", 2, SIG_XRT401D),
+	BOARD_ADM("XRT-402D", "Planet XRT-402D", 2, SIG_XRT402D),
+	
+	{.model = NULL}
+};
+
+/*
+ * Helper routines
+ */
+void
+errmsgv(int syserr, const char *fmt, va_list arg_ptr)
+{
+	int save = errno;
+
+	fflush(0);
+	fprintf(stderr, "%s: error, ", progname);
+	vfprintf(stderr, fmt, arg_ptr);
+	if (syserr != 0) {
+		fprintf(stderr, " (%s)", strerror(save));
+	}
+	fprintf(stderr, "\n");
+}
+
+void
+errmsg(int syserr, const char *fmt, ...)
+{
+	va_list arg_ptr;
+	va_start(arg_ptr, fmt);
+	errmsgv(syserr, fmt, arg_ptr);
+	va_end(arg_ptr);
+}
+
+void
+dbgmsg(int level, const char *fmt, ...)
+{
+	va_list arg_ptr;
+	if (verblevel >= level) {
+		fflush(0);
+		va_start(arg_ptr, fmt);
+		vfprintf(stderr, fmt, arg_ptr);
+		fprintf(stderr, "\n");
+		va_end(arg_ptr);
+	}
+}
+
+
+void
+usage(int status)
+{
+	FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
+	struct board_info *board;
+
+	fprintf(stream, "Usage: %s [OPTIONS...] <file>\n", progname);
+	fprintf(stream,
+"\n"
+"Options:\n"
+"  -B <board>      create image for the board specified with <board>.\n"
+"                  valid <board> values:\n"
+	);
+	for (board = boards; board->model != NULL; board++){
+		fprintf(stream,
+"               %-12s: %s\n",
+		 board->model, board->name);
+	};
+	fprintf(stream,
+"  -d              disable check for available space\n"
+"                  add boot code to the image\n"
+"  -b <file>[:<len>[:<padc>]]\n"
+"                  add boot code to the image\n"
+"  -c <file>[:<len>[:<padc>]]\n"
+"                  add configuration settings to the image\n"
+"  -r <file>:[<addr>][:<len>[:<padc>]]\n"
+"                  add runtime code to the image"
+"  -w [<file>:[<addr>][:<len>[:<padc>]]]\n"
+"                  add webpages to the image"
+"  -x <file>[:<len>[:<padc>]]\n"
+"                  add extra data at the end of the image\n"
+"  -h              show this screen\n"
+"Parameters:\n"
+"  <file>          write output to the file <file>\n"
+	);
+
+	exit(status);
+}
+
+
+/*
+ * argument parsing
+ */
+int
+str2u32(char *arg, uint32_t *val)
+{
+	char *err = NULL;
+	uint32_t t;
+	
+	errno=0;
+	t = strtoul(arg, &err, 0);
+	if (errno || (err==arg) || ((err != NULL) && *err)) {
+		return -1;
+	}
+
+	*val = t;
+	return 0;
+}
+
+
+int
+str2u16(char *arg, uint16_t *val)
+{
+	char *err = NULL;
+	uint32_t t;
+
+	errno=0;
+	t = strtoul(arg, &err, 0);
+	if (errno || (err==arg) || ((err != NULL) && *err) || (t >= 0x10000)) {
+		return -1;
+	}
+	
+	*val = t & 0xFFFF;
+	return 0;
+}
+
+int
+str2u8(char *arg, uint8_t *val)
+{
+	char *err = NULL;
+	uint32_t t;
+
+	errno=0;
+	t = strtoul(arg, &err, 0);
+	if (errno || (err==arg) || ((err != NULL) && *err) || (t >= 0x100)) {
+		return -1;
+	}
+	
+	*val = t & 0xFF;
+	return 0;
+}
+
+int
+str2sig(char *arg, uint32_t *sig)
+{
+	if (strlen(arg) != 4)
+		return -1;
+
+	*sig = arg[0] | (arg[1] << 8) | (arg[2] << 16) | (arg[3] << 24);
+	
+	return 0;
+}
+
+
+int
+parse_arg(char *arg, char *buf, char *argv[])
+{
+	int res = 0;
+	size_t argl;
+	char *tok;
+	char **ap = &buf;
+	int i;
+
+	memset(argv, 0, MAX_ARG_COUNT * sizeof(void *));
+
+	if ((arg == NULL)) {
+		/* no arguments */
+		return 0;
+	}
+
+	argl = strlen(arg);
+	if (argl == 0) {
+		/* no arguments */
+		return 0;
+	}
+
+	if (argl >= MAX_ARG_LEN) {
+		/* argument is too long */
+		argl = MAX_ARG_LEN-1;
+	}
+
+	memcpy(buf, arg, argl);
+	buf[argl] = '\0';
+
+	for (i = 0; i < MAX_ARG_COUNT; i++) {
+		tok = strsep(ap, ":");
+		if (tok == NULL) {
+			break;
+		}
+#if 0
+		else if (tok[0] == '\0') {
+			break;
+		}
+#endif
+		argv[i] = tok;
+		res++;
+	}
+
+	return res;
+}
+
+
+int
+required_arg(char c, char *arg)
+{
+	if (arg == NULL || *arg != '-')
+		return 0;
+
+	errmsg(0,"option -%c requires an argument\n", c);
+	return -1;
+}
+
+
+int
+is_empty_arg(char *arg)
+{
+	int ret = 1;
+	if (arg != NULL) {
+		if (*arg) ret = 0;
+	};
+	return ret;
+}
+
+
+void
+csum8_update(uint8_t *p, uint32_t len, struct csum_state *css)
+{
+	for ( ; len > 0; len --) {
+		css->val += *p++;
+	}
+}
+
+
+uint16_t
+csum8_get(struct csum_state *css)
+{
+	uint8_t t;
+	
+	t = css->val;
+	return ~t + 1;
+}
+
+
+void
+csum16_update(uint8_t *p, uint32_t len, struct csum_state *css)
+{
+	uint16_t t;
+	
+	if (css->odd) {
+		t = css->tmp + (p[0]<<8);
+		css->val += LE16_TO_HOST(t);
+		css->odd = 0;
+		len--;
+		p++;
+	}
+	
+	for ( ; len > 1; len -= 2, p +=2 ) {
+		t = p[0] + (p[1] << 8);
+		css->val += LE16_TO_HOST(t);
+	}
+
+	if (len == 1) {
+		css->tmp = p[0];
+		css->odd = 1;
+	}
+}
+
+
+uint16_t
+csum16_get(struct csum_state *css)
+{
+	char pad = 0;
+
+	csum16_update(&pad, 1, css);
+	return ~css->val + 1;
+}
+
+
+void
+csum_init(struct csum_state *css, int size)
+{
+	css->val = 0;
+	css->tmp = 0;
+	css->odd = 0;
+	css->size = size;
+}
+
+
+void
+csum_update(uint8_t *p, uint32_t len, struct csum_state *css)
+{
+	switch (css->size) {
+	case 1:
+		csum8_update(p,len,css);
+		break;
+	case 2:
+		csum16_update(p,len,css);
+		break;
+	}
+}
+
+
+uint16_t
+csum_get(struct csum_state *css)
+{
+	uint16_t ret;
+
+	switch (css->size) {
+	case 1:
+		ret = csum8_get(css);
+		break;
+	case 2:
+		ret = csum16_get(css);
+		break;
+	}
+
+	return ret;
+}
+
+
+/*
+ * routines to write data to the output file
+ */
+int
+write_out_data(FILE *outfile, uint8_t *data, size_t len,
+		struct csum_state *css)
+{
+	errno = 0;
+
+	fwrite(data, len, 1, outfile);
+	if (errno) {
+		errmsg(1,"unable to write output file");
+		return -1;
+	}
+
+	if (css) {
+		csum_update(data, len, css);
+	}
+
+	return 0;
+}
+
+
+int
+write_out_padding(FILE *outfile, size_t len, uint8_t padc,
+		 struct csum_state *css)
+{
+	uint8_t buf[512];
+	size_t buflen = sizeof(buf);
+
+	memset(buf, padc, buflen);
+	while (len > 0) {
+		if (len < buflen)
+			buflen = len;
+
+		if (write_out_data(outfile, buf, buflen, css))
+			return -1;
+			
+		len -= buflen;
+	}
+
+	return 0;
+}
+
+
+int
+block_stat_file(struct csys_block *block)
+{
+	struct stat st;
+	int res;
+
+	if (block->file_name == NULL)
+		return 0;
+
+	res = stat(block->file_name, &st);
+	if (res){
+		errmsg(1, "stat failed on %s", block->file_name);
+		return res;
+	}
+
+	block->file_size = st.st_size;
+	return 0;
+}
+
+
+int
+block_writeout_hdr(FILE *outfile, struct csys_block *block)
+{
+	struct csys_header hdr;
+	int res;
+
+	if (block->size_hdr == 0)
+		return 0;
+
+	/* setup header fields */
+	memcpy(hdr.sig, block->sig, 4);
+	hdr.addr = HOST_TO_LE32(block->addr);
+	hdr.size = HOST_TO_LE32(block->size-block->size_hdr);
+
+	dbgmsg(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) {
+		errmsg(1,"unable to open file: %s", block->file_name);
+		return -1;
+	}
+
+	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) {
+			errmsg(1,"unable to read from file: %s",
+				block->file_name);
+			res = -1;
+			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;
+	dbgmsg(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;
+
+	dbgmsg(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;
+
+	dbgmsg(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 (strcmp(model, board->model) == 0) {
+			ret = board;
+			break;
+		}
+	};
+
+	return ret;
+}
+
+
+int
+parse_opt_board(char ch, char *arg)
+{
+
+	dbgmsg(1,"parsing board option: -%c %s", ch, arg);
+
+	if (board != NULL) {
+		errmsg(0,"only one board option allowed");
+		return -1;
+	}
+
+	if (required_arg(ch, arg))
+		return -1;
+
+	board = find_board(arg);
+	if (board == NULL){
+		errmsg(0,"invalid/unknown board specified: %s", arg);
+		return -1;
+	}
+
+	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 ) {
+		errmsg(0,"too many blocks specified");
+		return -1;
+	}
+
+	block = &blocks[num_blocks];
+	
+	/* setup default field values */
+	block->need_file = 1;
+	block->padc = 0xFF;
+	
+	switch (ch) {
+	case 'b':
+		if (boot_block) {
+			errmsg(0,"only one boot block allowed");
+			break;
+		}
+		block->type = BLOCK_TYPE_BOOT;
+		boot_block = block;
+		break;
+	case 'c':
+		if (conf_block) {
+			errmsg(0,"only one config block allowed");
+			break;
+		}
+		block->type = BLOCK_TYPE_CONF;
+		conf_block = block;
+		break;
+	case 'w':
+		if (webp_block) {
+			errmsg(0,"only one web block allowed");
+			break;
+		}
+		block->type = BLOCK_TYPE_WEBP;
+		block->size_hdr = sizeof(struct csys_header);
+		block->size_csum = 1;
+		block->need_file = 0;
+		webp_block = block;
+		break;
+	case 'r':
+		if (code_block) {
+			errmsg(0,"only one runtime block allowed");
+			break;
+		}
+		block->type = BLOCK_TYPE_CODE;
+		block->size_hdr = sizeof(struct csys_header);
+		block->size_csum = 2;
+		code_block = block;
+		break;
+	case 'x':
+		block->type = BLOCK_TYPE_XTRA;
+		break;
+	default:
+		errmsg(0,"unknown block type \"%c\"", ch);
+		return -1;
+	}
+
+	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) {
+			errmsg(0,"not enough memory");
+			return -1;
+		}
+	} else if (block->need_file){
+		errmsg(0,"no file specified in %s", arg);
+		return -1;
+	}
+
+	if (block->size_hdr) {
+		p = argv[i++];
+		if (!is_empty_arg(p)) {
+			if (str2u32(p, &block->addr) != 0) {
+				errmsg(0,"invalid start address in %s", arg);
+				return -1;
+			}
+			block->addr_set = 1;
+		}
+	}
+
+	p = argv[i++];
+	if (!is_empty_arg(p)) {
+		if (str2u32(p, &block->size) != 0) {
+			errmsg(0,"invalid block size in %s", arg);
+			return -1;
+		}
+		block->size_set = 1;
+	}
+
+	p = argv[i++];
+	if (!is_empty_arg(p) && (str2u8(p, &block->padc) != 0)) {
+		errmsg(0,"invalid paddig character in %s", arg);
+		return -1;
+	}
+
+	num_blocks++;
+
+	return 0;
+}
+
+
+int
+process_blocks(void)
+{
+	struct csys_block *block;
+	uint32_t size_avail;
+	int i;
+	int res;
+
+	/* collecting stats */
+	for (i = 0; i < num_blocks; i++) {
+		block = &blocks[i];
+		res = block_stat_file(block);
+		if (res)
+			return res;
+	}
+
+	size_avail = board->flash_size;
+
+	/* bootloader */
+	block = boot_block;
+	if (block) {
+		if (block->size_set) {
+			board->boot_size= block->size;
+		} else {
+			block->size = board->boot_size;
+		}
+		if (block->size > size_avail) {
+			errmsg(0,"boot block is too big");
+			return -1;
+		}
+	}
+	size_avail -= board->boot_size;
+
+	/* configuration data */
+	block = conf_block;
+	if (block) {
+		if (block->size_set) {
+			board->conf_size = block->size;
+		} else {
+			block->size = board->conf_size;
+		}
+		if (block->size > size_avail) {
+			errmsg(0,"config block is too big");
+			return -1;
+		}
+
+	}
+	size_avail -= board->conf_size;
+
+	/* webpages */
+	block = webp_block;
+	if (block) {
+		if (block->size_set == 0)
+			block->size = board->webp_size;
+		board->webp_size = block->size;
+		if (block->size > board->webp_size_max) {
+			errmsg(0,"webpages block is too big");
+			return -1;
+		}
+		memcpy(block->sig, board->sig_webp, 4);
+		if (block->addr_set == 0)
+			block->addr = board->addr_webp;
+	}
+	size_avail -= board->webp_size;
+
+	/* runtime code */
+	block = code_block;
+	if (block) {
+		if (block->size_set == 0) {
+			block->size =ALIGN(block->file_size+ block->size_hdr +
+				block->size_csum, 0x10000);
+		}
+		board->code_size = block->size;
+		if (board->code_size > size_avail) {
+			errmsg(0,"code block is too big");
+			if (size_check)
+				return -1;
+		}
+		memcpy(code_block->sig, SIG_CSYS, 4);
+		if (code_block->addr_set == 0)
+			code_block->addr = board->addr_code;
+	}
+	size_avail -= board->code_size;
+
+	for (i = 0; i < num_blocks; i++) {
+		block = &blocks[i];
+
+		if (block->type != BLOCK_TYPE_XTRA)
+			continue;
+
+		if (block->size_set == 0)
+			block->size = ALIGN(block->file_size, 0x10000);
+
+		if (block->size > size_avail) {
+			errmsg(0,"no space for file %s",
+				block->file_name);
+			if (size_check)
+				return -1;
+		}
+
+		size_avail -= block->size;
+	}
+
+	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) {
+			errmsg(0,"file %s is too big, size=%d, avail=%d",
+				block->file_name, block->file_size, 
+				block->size_avail);
+			res = -1;
+			break;
+		}
+	}
+
+	return res;
+}
+
+
+int
+main(int argc, char *argv[])
+{
+	int optinvalid = 0;   /* flag for invalid option */
+	int c;
+	int res = EXIT_FAILURE;
+
+	FILE *outfile;
+	
+	progname=basename(argv[0]);
+
+	opterr = 0;  /* could not print standard getopt error messages */
+	while ( 1 ) {
+		optinvalid = 0;
+		
+		c = getopt(argc, argv, "b:c:dB:hr: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':
+			size_check = 0;
+			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 ){
+			errmsg(0, "invalid option: -%c", optopt);
+			goto out;
+		}
+	}
+
+	if (optind == argc) {
+		errmsg(0, "no output file specified");
+		goto out;
+	}
+
+	ofname = argv[optind++];
+
+	if (optind < argc) {
+		errmsg(0, "invalid option: %s", argv[optind]);
+		goto out;
+	}
+	
+
+	if (board == NULL) {
+		errmsg(0, "no board specified");
+		goto out;
+	}
+
+	if (process_blocks() != 0) {
+		goto out;
+	}
+
+	outfile = fopen(ofname, "w");
+	if (outfile == NULL) {
+		errmsg(1, "could not open \"%s\" for writing", ofname);
+		goto out;
+	}
+
+	if (write_out_blocks(outfile) != 0)
+		goto out_flush;
+
+	dbgmsg(1,"Image file %s completed.", ofname);
+
+	res = EXIT_SUCCESS;
+
+out_flush:
+	fflush(outfile);
+	fclose(outfile);
+	if (res != EXIT_SUCCESS) {
+		unlink(ofname);
+	}
+out:
+	return res;
+}