--- /dev/null
+/*
+ * 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;
+}
+
projects / project / firmware-utils.git / commitdiff