--- /dev/null
+/*
+ * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2016 Tal Keren <kooolk@gmail.com>
+ *
+ * Stripped down version of the regular tplink firmware that is only used
+ * for compressing and booting the kernel.
+ *
+ * This tool was based on:
+ * TP-Link WR941 V2 firmware checksum fixing tool.
+ * Copyright (C) 2008,2009 Wang Jian <lark@linux.net.cn>
+ *
+ * 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 <arpa/inet.h>
+#include <netinet/in.h>
+
+#define ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
+
+#define HEADER_VERSION_V1 0x01000000
+
+#define MD5SUM_LEN 16
+
+struct file_info {
+ char *file_name; /* name of the file */
+ uint32_t file_size; /* length of the file */
+};
+
+struct fw_header {
+ uint32_t version; /* header version */
+ char vendor_name[24];
+ char fw_version[36];
+ uint32_t hw_id; /* hardware id */
+ uint32_t hw_rev; /* hardware revision */
+ uint32_t unk1;
+ uint8_t md5sum1[MD5SUM_LEN];
+ uint32_t unk2;
+ uint8_t md5sum2[MD5SUM_LEN];
+ uint32_t unk3;
+ uint32_t kernel_la; /* kernel load address */
+ uint32_t kernel_ep; /* kernel entry point */
+ uint32_t fw_length; /* total length of the firmware */
+ uint32_t kernel_ofs; /* kernel data offset */
+ uint32_t kernel_len; /* kernel data length */
+ uint32_t rootfs_ofs; /* rootfs data offset */
+ uint32_t rootfs_len; /* rootfs data length */
+ uint32_t boot_ofs; /* bootloader data offset */
+ uint32_t boot_len; /* bootloader data length */
+ uint16_t ver_hi;
+ uint16_t ver_mid;
+ uint16_t ver_lo;
+ uint8_t pad[354];
+} __attribute__ ((packed));
+
+
+/*
+ * Globals
+ */
+static char *ofname;
+static char *progname;
+static char *vendor = "TP-LINK Technologies";
+static char *version = "ver. 1.0";
+static char *fw_ver = "0.0.0";
+static uint32_t hdr_ver = HEADER_VERSION_V1;
+
+static char *opt_hw_id;
+static uint32_t hw_id = 0;
+static struct file_info kernel_info;
+static uint32_t kernel_la = 0;
+static uint32_t kernel_ep = 0;
+static uint32_t kernel_len = 0;
+
+/*
+ * 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 ": %s\n", \
+ progname, ## __VA_ARGS__, strerror(save)); \
+} while (0)
+
+#define DBG(fmt, ...) do { \
+ fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
+} while (0)
+
+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"
+" -E <ep> kernel entry point with <ep> (hexval prefixed with 0x)\n"
+" -L <la> kernel load address with <la> (hexval prefixed with 0x)\n"
+" -H <hwid> use hardware id specified with <hwid>\n"
+" -k <file> read kernel image from the file <file>\n"
+" -o <file> write output to the file <file>\n"
+" -N <vendor> set image vendor to <vendor>\n"
+" -V <version> set image version to <version>\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 (opt_hw_id) {
+ hw_id = strtoul(opt_hw_id, NULL, 0);
+ }
+
+ if (!kernel_la || !kernel_ep) {
+ ERR("kernel loading address and entry point must be specified");
+ 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;
+
+ kernel_len = kernel_info.file_size;
+
+ if (ofname == NULL) {
+ ERR("no output file specified");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void fill_header(char *buf)
+{
+ struct fw_header *hdr = (struct fw_header *)buf;
+
+ memset(hdr, 0, sizeof(struct fw_header));
+
+ hdr->version = htonl(hdr_ver);
+ strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
+ strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
+
+ /**
+ * This field is ignored and not specified in stock firmware
+ * It is specified here to ensure sysupgrade hardware compatibility
+ * The hardware id of a device is in the product-info partition
+ */
+ hdr->hw_id = htonl(hw_id);
+
+ hdr->kernel_la = htonl(kernel_la);
+ hdr->kernel_ep = htonl(kernel_ep);
+
+ hdr->kernel_ofs = htonl(sizeof(struct fw_header));
+ hdr->kernel_len = htonl(kernel_len);
+}
+
+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;
+
+ buflen = sizeof(struct fw_header) + kernel_len;
+ buflen = ALIGN(buflen, 0x4);
+
+ buf = malloc(buflen);
+ if (!buf) {
+ ERR("no memory for buffer\n");
+ goto out;
+ }
+
+ memset(buf, 0, buflen);
+ p = buf + sizeof(struct fw_header);
+ ret = read_to_buf(&kernel_info, p);
+ if (ret)
+ goto out_free_buf;
+
+ fill_header(buf);
+ 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, "H:E:L:V:N:k:o:h");
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'H':
+ opt_hw_id = optarg;
+ break;
+ case 'E':
+ sscanf(optarg, "0x%x", &kernel_ep);
+ break;
+ case 'L':
+ sscanf(optarg, "0x%x", &kernel_la);
+ break;
+ case 'V':
+ version = optarg;
+ break;
+ case 'N':
+ vendor = optarg;
+ break;
+ case 'k':
+ kernel_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 / openwrt / staging / ynezz.git / commitdiff