can this not be merged into one of the other tplink tools ?
On 07/01/2016 01:40, Tal Keren wrote:
> The firmware image that is used in TP-Link RE450 (and some more devices from
> the RE series) is tplink-safeloader.
> In the kernel partition, the kernel is compressed in a regular tp-link
> firmware that is just used for booting. Since it is only used for compressing
> and booting, only four fields are filled in the header:
> Vendor, version, kernel load address and kernel entry point.
> mktplinkfw-kernel is a simpler version of mktpolinkfw that generate such
> images. It also specifies the hardware id (as it is in the product info
> section), so when doing a sysupgrade - the existing code will check for
> hardware compatibility.
>
> Signed-off-by: Tal Keren <koo...@gmail.com>
> ---
> tools/firmware-utils/Makefile | 1 +
> tools/firmware-utils/src/mktplinkfw-kernel.c | 352
> +++++++++++++++++++++++++++
> 2 files changed, 353 insertions(+)
> create mode 100755 tools/firmware-utils/src/mktplinkfw-kernel.c
>
> diff --git a/tools/firmware-utils/Makefile b/tools/firmware-utils/Makefile
> index dc922b0..db1c953 100644
> --- a/tools/firmware-utils/Makefile
> +++ b/tools/firmware-utils/Makefile
> @@ -42,6 +42,7 @@ define Host/Compile
> $(call cc,mkplanexfw sha1)
> $(call cc,mktplinkfw md5)
> $(call cc,mktplinkfw2 md5)
> + $(call cc,mktplinkfw-kernel)
> $(call cc,tplink-safeloader md5, -Wall)
> $(call cc,pc1crypt)
> $(call cc,osbridge-crc)
> diff --git a/tools/firmware-utils/src/mktplinkfw-kernel.c
> b/tools/firmware-utils/src/mktplinkfw-kernel.c
> new file mode 100755
> index 0000000..1565e73
> --- /dev/null
> +++ b/tools/firmware-utils/src/mktplinkfw-kernel.c
> @@ -0,0 +1,352 @@
> +/*
> + * Copyright (C) 2009 Gabor Juhos <juh...@openwrt.org>
> + * Copyright (C) 2016 Tal Keren <koo...@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 <l...@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;
> +}
> +
>
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