tools/firmware-utils: new tool for the Zcomax devices

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22883 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 408 insertions, 0 deletions

diff --git a/tools/firmware-utils/src/mkzcfw.c b/tools/firmware-utils/src/mkzcfw.c
new file mode 100644
index 000000000..d438f0373
--- /dev/null
+++ b/tools/firmware-utils/src/mkzcfw.c
@@ -0,0 +1,408 @@
+/*
+ * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ */
+
+#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 "cyg_crc.h"
+
+#if (__BYTE_ORDER == __BIG_ENDIAN)
+#  define HOST_TO_BE32(x)	(x)
+#  define BE32_TO_HOST(x)	(x)
+#  define HOST_TO_LE32(x)	bswap_32(x)
+#  define LE32_TO_HOST(x)	bswap_32(x)
+#else
+#  define HOST_TO_BE32(x)	bswap_32(x)
+#  define BE32_TO_HOST(x)	bswap_32(x)
+#  define HOST_TO_LE32(x)	(x)
+#  define LE32_TO_HOST(x)	(x)
+#endif
+
+#define MAGIC_FIRMWARE	0x6d726966	/* 'firm' */
+#define MAGIC_KERNEL	0x676d694b	/* 'Kimg' */
+#define MAGIC_ROOTFS	0x676d6952	/* 'Rimg' */
+
+struct file_info {
+	char		*file_name;	/* name of the file */
+	uint32_t	file_size;	/* length of the file */
+};
+
+struct fw_header {
+	uint32_t	magic;
+	uint32_t	length;
+	uint32_t	unk1;
+	uint32_t	unk2;
+} __attribute__ ((packed));
+
+struct fw_tail {
+	uint32_t	hw_id;
+	uint32_t	crc;
+} __attribute__ ((packed));
+
+struct board_info {
+	char		*id;
+	uint32_t	hw_id;
+	uint32_t	kernel_len;
+	uint32_t	rootfs_len;
+};
+
+/*
+ * Globals
+ */
+static char *ofname;
+static char *progname;
+
+static char *board_id;
+static struct board_info *board;
+static struct file_info kernel_info;
+static struct file_info rootfs_info;
+
+
+static struct board_info boards[] = {
+	{
+		.id		= "ZCN-1523H-2-8",
+		.hw_id		= 0x66661523,
+		.kernel_len	= 0x170000,
+		.rootfs_len	= 0x610000,
+	}, {
+		.id		= "ZCN-1523H-5-16",
+		.hw_id		= 0x6615235A,
+		.kernel_len	= 0x170000,
+		.rootfs_len	= 0x610000,
+	}, {
+		/* terminating entry */
+	}
+};
+
+/*
+ * Message macros
+ */
+#define ERR(fmt, ...) do { \
+	fflush(0); \
+	fprintf(stderr, "[%s] *** error: " fmt "\n", \
+			progname, ## __VA_ARGS__ ); \
+} while (0)
+
+#define ERRS(fmt, ...) do { \
+	int save = errno; \
+	fflush(0); \
+	fprintf(stderr, "[%s] *** error: " fmt "\n", \
+			progname, ## __VA_ARGS__, strerror(save)); \
+} while (0)
+
+#define DBG(fmt, ...) do { \
+	fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
+} while (0)
+
+static struct board_info *find_board(char *id)
+{
+	struct board_info *ret;
+	struct board_info *board;
+
+	ret = NULL;
+	for (board = boards; board->id != NULL; board++){
+		if (strcasecmp(id, board->id) == 0) {
+			ret = board;
+			break;
+		}
+	};
+
+	return ret;
+}
+
+static void usage(int status)
+{
+	FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
+	struct board_info *board;
+
+	fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
+	fprintf(stream,
+"\n"
+"Options:\n"
+"  -B <board>      create image for the board specified with <board>\n"
+"  -k <file>       read kernel image from the file <file>\n"
+"  -r <file>       read rootfs image from the file <file>\n"
+"  -o <file>       write output to the file <file>\n"
+"  -h              show this screen\n"
+	);
+
+	exit(status);
+}
+
+static int get_file_stat(struct file_info *fdata)
+{
+	struct stat st;
+	int res;
+
+	if (fdata->file_name == NULL)
+		return 0;
+
+	res = stat(fdata->file_name, &st);
+	if (res){
+		ERRS("stat failed on %s", fdata->file_name);
+		return res;
+	}
+
+	fdata->file_size = st.st_size;
+	return 0;
+}
+
+static int read_to_buf(struct file_info *fdata, char *buf)
+{
+	FILE *f;
+	int ret = EXIT_FAILURE;
+
+	f = fopen(fdata->file_name, "r");
+	if (f == NULL) {
+		ERRS("could not open \"%s\" for reading", fdata->file_name);
+		goto out;
+	}
+
+	errno = 0;
+	fread(buf, fdata->file_size, 1, f);
+	if (errno != 0) {
+		ERRS("unable to read from file \"%s\"", fdata->file_name);
+		goto out_close;
+	}
+
+	ret = EXIT_SUCCESS;
+
+ out_close:
+	fclose(f);
+ out:
+	return ret;
+}
+
+static int check_options(void)
+{
+	int ret;
+
+	if (board_id == NULL) {
+		ERR("no board specified");
+		return -1;
+	}
+
+	board = find_board(board_id);
+	if (board == NULL) {
+		ERR("unknown/unsupported board id \"%s\"", board_id);
+		return -1;
+	}
+
+	if (kernel_info.file_name == NULL) {
+		ERR("no kernel image specified");
+		return -1;
+	}
+
+	ret = get_file_stat(&kernel_info);
+	if (ret)
+		return ret;
+
+	if (kernel_info.file_size > board->kernel_len) {
+		ERR("kernel image is too big");
+		return -1;
+	}
+
+	if (rootfs_info.file_name == NULL) {
+		ERR("no rootfs image specified");
+		return -1;
+	}
+
+	ret = get_file_stat(&rootfs_info);
+	if (ret)
+		return ret;
+
+	if (rootfs_info.file_size > board->rootfs_len) {
+		ERR("rootfs image is too big");
+		return -1;
+	}
+
+	if (ofname == NULL) {
+		ERR("no output file specified");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int write_fw(char *data, int len)
+{
+	FILE *f;
+	int ret = EXIT_FAILURE;
+
+	f = fopen(ofname, "w");
+	if (f == NULL) {
+		ERRS("could not open \"%s\" for writing", ofname);
+		goto out;
+	}
+
+	errno = 0;
+	fwrite(data, len, 1, f);
+	if (errno) {
+		ERRS("unable to write output file");
+		goto out_flush;
+	}
+
+	DBG("firmware file \"%s\" completed", ofname);
+
+	ret = EXIT_SUCCESS;
+
+ out_flush:
+	fflush(f);
+	fclose(f);
+	if (ret != EXIT_SUCCESS) {
+		unlink(ofname);
+	}
+ out:
+	return ret;
+}
+
+static int build_fw(void)
+{
+	int buflen;
+	char *buf;
+	char *p;
+	int ret = EXIT_FAILURE;
+	int writelen = 0;
+	uint32_t crc;
+	struct fw_header *hdr;
+	struct fw_tail *tail;
+
+	buflen = 3 * sizeof(struct fw_header) +
+		 kernel_info.file_size + rootfs_info.file_size +
+		 3 * sizeof(struct fw_tail);
+
+	buf = malloc(buflen);
+	if (!buf) {
+		ERR("no memory for buffer\n");
+		goto out;
+	}
+
+	p = buf;
+	memset(p, 0, buflen);
+
+	/* fill firmware header */
+	hdr = (struct fw_header *) p;
+	hdr->magic = HOST_TO_LE32(MAGIC_FIRMWARE);
+	hdr->length = HOST_TO_LE32(buflen) - sizeof(struct fw_header);
+	p += sizeof(struct fw_header);
+
+	/* fill kernel block header */
+	hdr = (struct fw_header *) p;
+	hdr->magic = HOST_TO_LE32(MAGIC_KERNEL);
+	hdr->length = HOST_TO_LE32(kernel_info.file_size +
+				   sizeof(struct fw_tail));
+	p += sizeof(struct fw_header);
+
+	/* read kernel data */
+	ret = read_to_buf(&kernel_info, p);
+	if (ret)
+		goto out_free_buf;
+
+	/* fill firmware tail */
+	tail = (struct fw_tail *) (p + kernel_info.file_size);
+	tail->hw_id = HOST_TO_BE32(board->hw_id);
+	tail->crc = HOST_TO_BE32(cyg_crc32(p, kernel_info.file_size +
+				 	   sizeof(struct fw_tail) - 4));
+
+	p += kernel_info.file_size + sizeof(struct fw_tail);
+
+	/* fill rootfs block header */
+	hdr = (struct fw_header *) p;
+	hdr->magic = HOST_TO_LE32(MAGIC_ROOTFS);
+	hdr->length = HOST_TO_LE32(rootfs_info.file_size +
+				   sizeof(struct fw_tail));
+	p += sizeof(struct fw_header);
+
+	/* read rootfs data */
+	ret = read_to_buf(&rootfs_info, p);
+	if (ret)
+		goto out_free_buf;
+
+	/* fill firmware tail */
+	tail = (struct fw_tail *) (p + rootfs_info.file_size);
+	tail->hw_id = HOST_TO_BE32(board->hw_id);
+	tail->crc = HOST_TO_BE32(cyg_crc32(p, rootfs_info.file_size +
+				 	   sizeof(struct fw_tail) - 4));
+
+	p += rootfs_info.file_size + sizeof(struct fw_tail);
+
+	/* fill firmware tail */
+	tail = (struct fw_tail *) p;
+	tail->hw_id = HOST_TO_BE32(board->hw_id);
+	tail->crc = HOST_TO_BE32(cyg_crc32(buf + sizeof(struct fw_header),
+				 buflen - sizeof(struct fw_header) - 4));
+
+	ret = write_fw(buf, buflen);
+	if (ret)
+		goto out_free_buf;
+
+	ret = EXIT_SUCCESS;
+
+ out_free_buf:
+	free(buf);
+ out:
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	int ret = EXIT_FAILURE;
+	int err;
+
+	FILE *outfile;
+
+	progname = basename(argv[0]);
+
+	while ( 1 ) {
+		int c;
+
+		c = getopt(argc, argv, "B:k:r:o:h");
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case 'B':
+			board_id = optarg;
+			break;
+		case 'k':
+			kernel_info.file_name = optarg;
+			break;
+		case 'r':
+			rootfs_info.file_name = optarg;
+			break;
+		case 'o':
+			ofname = optarg;
+			break;
+		case 'h':
+			usage(EXIT_SUCCESS);
+			break;
+		default:
+			usage(EXIT_FAILURE);
+			break;
+		}
+	}
+
+	ret = check_options();
+	if (ret)
+		goto out;
+
+	ret = build_fw();
+
+ out:
+	return ret;
+}
+