--- /dev/null
+/*
+ * Copyright (C) 2014 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 <arpa/inet.h>
+#include <netinet/in.h>
+
+#define MAX_MAGIC_LEN 16
+#define MAX_MODEL_LEN 32
+#define MAX_VERSION_LEN 14
+#define MAX_MTD_NAME_LEN 16
+
+#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
+
+struct edimax_header {
+ char magic[MAX_MAGIC_LEN];
+ char model[MAX_MODEL_LEN];
+ unsigned char force;
+ unsigned char header_csum;
+ unsigned char data_csum;
+ uint32_t data_size;
+ uint32_t start_addr;
+ uint32_t end_addr;
+ char fw_version[MAX_VERSION_LEN];
+ unsigned char type;
+ char mtd_name[MAX_MTD_NAME_LEN];
+} __attribute__ ((packed));
+
+/*
+ * Globals
+ */
+static char *ofname;
+static char *ifname;
+static char *progname;
+
+static char *model;
+static char *magic = "eDiMaX";
+static char *fw_version = "";
+static char *mtd_name;
+static int force;
+static uint32_t start_addr;
+static uint32_t end_addr;
+static uint8_t image_type;
+static int data_size;
+
+/*
+ * 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;
+
+ fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
+ fprintf(stream,
+"\n"
+"Options:\n"
+" -e <addr> set end addr to <addr>\n"
+" -f set force flag\n"
+" -h show this screen\n"
+" -i <file> read input data from the file <file>\n"
+" -o <file> write output to the file <file>\n"
+" -m <model> set model to <model>\n"
+" -M <magic> set image magic to <magic>\n"
+" -n <name> set MTD device name to <name>\n"
+" -s <addr> set start address to <addr>\n"
+" -t <type> set image type to <type>\n"
+" -v <version> set firmware version to <version>\n"
+ );
+
+ exit(status);
+}
+
+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
+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;
+}
+
+static int get_file_size(char *name)
+{
+ struct stat st;
+ int res;
+
+ res = stat(name, &st);
+ if (res){
+ ERRS("stat failed on %s", name);
+ return -1;
+ }
+
+ return st.st_size;
+}
+
+static int read_to_buf(char *name, char *buf, int buflen)
+{
+ FILE *f;
+ int ret = EXIT_FAILURE;
+
+ f = fopen(name, "r");
+ if (f == NULL) {
+ ERRS("could not open \"%s\" for reading", name);
+ goto out;
+ }
+
+ errno = 0;
+ fread(buf, buflen, 1, f);
+ if (errno != 0) {
+ ERRS("unable to read from file \"%s\"", name);
+ goto out_close;
+ }
+
+ ret = EXIT_SUCCESS;
+
+out_close:
+ fclose(f);
+out:
+ return ret;
+}
+
+static int check_options(void)
+{
+#define CHKSTR(_name, _msg) \
+ do { \
+ if (_name == NULL) { \
+ ERR("no %s specified", _msg); \
+ return -1; \
+ } \
+ } while (0)
+
+#define CHKSTRLEN(_name, _msg) \
+ do { \
+ int field_len; \
+ CHKSTR(_name, _msg); \
+ field_len = FIELD_SIZEOF(struct edimax_header, _name) - 1; \
+ if (strlen(_name) > field_len) { \
+ ERR("'%s' is too long, max %s length is %d", \
+ _name, _msg, field_len); \
+ return -1; \
+ } \
+ } while (0)
+
+ CHKSTR(ofname, "output file");
+ CHKSTR(ifname, "input file");
+
+ CHKSTRLEN(magic, "magic");
+ CHKSTRLEN(model, "model");
+ CHKSTRLEN(mtd_name, "MTD device name");
+ CHKSTRLEN(fw_version, "firware version");
+
+ data_size = get_file_size(ifname);
+ if (data_size < 0)
+ 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 unsigned char checksum(unsigned char *p, unsigned len)
+{
+ unsigned char csum = 0;
+
+ while (len--)
+ csum += *p++;
+
+ csum ^= 0xb9;
+
+ return csum;
+}
+
+static int build_fw(void)
+{
+ int buflen;
+ char *buf;
+ char *data;
+ struct edimax_header *hdr;
+ int ret = EXIT_FAILURE;
+
+ buflen = sizeof(struct edimax_header) + data_size;
+
+ buf = malloc(buflen);
+ if (!buf) {
+ ERR("no memory for buffer\n");
+ goto out;
+ }
+
+ data = buf + sizeof(struct edimax_header);
+
+ /* read input file */
+ ret = read_to_buf(ifname, data, data_size);
+ if (ret)
+ goto out_free_buf;
+
+ /* fill firmware header */
+ hdr = (struct edimax_header *)buf;
+ memset(hdr, 0, sizeof(struct edimax_header *));
+
+ strncpy(hdr->model, model, sizeof(hdr->model));
+ strncpy(hdr->magic, magic, sizeof(hdr->magic));
+ strncpy(hdr->fw_version, fw_version, sizeof(hdr->fw_version));
+ strncpy(hdr->mtd_name, mtd_name, sizeof(hdr->mtd_name));
+
+ hdr->force = force;
+ hdr->start_addr = htonl(start_addr);
+ hdr->end_addr = htonl(end_addr);
+ hdr->data_size = htonl(data_size);
+ hdr->type = image_type;
+
+ hdr->data_csum = checksum((unsigned char *)data, data_size);
+ hdr->header_csum = checksum((unsigned char *)hdr,
+ sizeof(struct edimax_header));
+
+ 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;
+
+ progname = basename(argv[0]);
+
+ while (1) {
+ int c;
+
+ c = getopt(argc, argv, "e:fhi:o:m:M:n:s:t:v:");
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'e':
+ if (str2u32(optarg, &end_addr)) {
+ ERR("%s is invalid '%s'",
+ "end address", optarg);
+ goto out;
+ }
+ break;
+ case 'f':
+ force = 1;
+ break;
+ case 'i':
+ ifname = optarg;
+ break;
+ case 'h':
+ usage(EXIT_SUCCESS);
+ break;
+ case 'o':
+ ofname = optarg;
+ break;
+ case 'm':
+ model = optarg;
+ break;
+ case 'M':
+ magic = optarg;
+ break;
+ case 'n':
+ mtd_name = optarg;
+ break;
+ case 's':
+ if (str2u32(optarg, &start_addr)) {
+ ERR("%s is invalid '%s'",
+ "start address", optarg);
+ goto out;
+ }
+ break;
+ case 't':
+ if (str2u8(optarg, &image_type)) {
+ ERR("%s is invalid '%s'",
+ "image type", optarg);
+ goto out;
+ }
+ break;
+ case 'v':
+ fw_version = optarg;
+ 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