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Add firmware tool for generating factory images for Edimax devices
SVN-Revision: 28688
This commit is contained in:
Vasilis Tsiligiannis
parent
29958120a2
commit
aadbbc4bac
@ -1,5 +1,5 @@
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#
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# Copyright (C) 2006-2008 OpenWrt.org
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# Copyright (C) 2006-2011 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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@ -54,6 +54,7 @@ define Host/Compile
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$(call cc,buffalo-tag buffalo-lib, -Wall)
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$(call cc,buffalo-tftp buffalo-lib, -Wall)
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$(call cc,mkwrgimg md5, -Wall)
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$(call cc,mkedimaximg)
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endef
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define Host/Install
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259
tools/firmware-utils/src/mkedimaximg.c
Normal file
259
tools/firmware-utils/src/mkedimaximg.c
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@ -0,0 +1,259 @@
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/*
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* Copyright (C) 2011 Vasilis Tsiligiannis <b_tsiligiannis@silverton.gr>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libgen.h>
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#include <getopt.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <endian.h> /* for __BYTE_ORDER */
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#if (__BYTE_ORDER == __LITTLE_ENDIAN)
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# define HOST_TO_LE16(x) (x)
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# define HOST_TO_LE32(x) (x)
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#else
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# define HOST_TO_LE16(x) bswap_16(x)
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# define HOST_TO_LE32(x) bswap_32(x)
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#endif
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struct header
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{
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unsigned char sign[4];
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unsigned int start;
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unsigned int flash;
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unsigned char model[4];
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unsigned int size;
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} __attribute__ ((packed));
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struct finfo
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{
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char *name;
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off_t size;
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};
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struct buf
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{
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char *start;
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size_t size;
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};
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static char *progname;
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static void usage(int status)
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{
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FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
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fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
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fprintf(stream,
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"\n"
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"Options:\n"
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" -s <sig> set image signature to <sig>\n"
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" -m <model> set model to <model>\n"
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" -i <file> read input from file <file>\n"
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" -o <file> write output to file <file>\n"
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" -f <flash> set flash address to <flash>\n"
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" -S <start> set start address to <start>\n");
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exit(status);
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}
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static int strtou32(char *arg, unsigned int *val)
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{
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char *endptr = NULL;
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errno = 0;
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*val = strtoul(arg, &endptr, 0);
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if (errno || (endptr == arg) || (*endptr && (endptr != NULL))) {
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return EXIT_SUCCESS;
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}
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return EXIT_FAILURE;
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}
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static unsigned short fwcsum (struct buf *buf) {
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int i;
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unsigned short ret = 0;
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for (i = 0; i < buf->size / 2; i++)
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ret -= ((unsigned short *) buf->start)[i];
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return ret;
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}
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static int fwread(struct finfo *finfo, struct buf *buf)
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{
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FILE *f;
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f = fopen(finfo->name, "r");
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if (!f) {
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fprintf(stderr, "could not open \"%s\" for reading\n", finfo->name);
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usage(EXIT_FAILURE);
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}
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buf->size = fread(buf->start, 1, finfo->size, f);
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if (buf->size != finfo->size) {
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fprintf(stderr, "unable to read from file \"%s\"\n", finfo->name);
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usage(EXIT_FAILURE);
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}
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fclose(f);
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return EXIT_SUCCESS;
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}
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static int fwwrite(struct finfo *finfo, struct buf *buf)
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{
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FILE *f;
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f = fopen(finfo->name, "w");
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if (!f) {
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fprintf(stderr, "could not open \"%s\" for writing\n", finfo->name);
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usage(EXIT_FAILURE);
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}
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buf->size = fwrite(buf->start, 1, finfo->size, f);
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if (buf->size != finfo->size) {
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fprintf(stderr, "unable to write to file \"%s\"\n", finfo->name);
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usage(EXIT_FAILURE);
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}
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fclose(f);
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return EXIT_SUCCESS;
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}
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int main(int argc, char **argv)
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{
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struct stat st;
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struct header header;
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struct buf ibuf, obuf;
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struct finfo ifinfo, ofinfo;
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unsigned short csum;
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int c;
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ifinfo.name = ofinfo.name = NULL;
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header.flash = header.size = header.start = 0;
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progname = basename(argv[0]);
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while((c = getopt(argc, argv, "i:o:m:s:f:S:h")) != -1) {
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switch (c) {
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case 'i':
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ifinfo.name = optarg;
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break;
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case 'o':
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ofinfo.name = optarg;
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break;
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case 'm':
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if (strlen(optarg) != 4) {
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fprintf(stderr, "model must be 4 characters long\n");
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usage(EXIT_FAILURE);
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}
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memcpy(header.model, optarg, 4);
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break;
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case 's':
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if (strlen(optarg) != 4) {
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fprintf(stderr, "signature must be 4 characters long\n");
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usage(EXIT_FAILURE);
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}
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memcpy(header.sign, optarg, 4);
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break;
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case 'h':
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usage(EXIT_SUCCESS);
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break;
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case 'f':
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if (!strtou32(optarg, &header.flash)) {
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fprintf(stderr, "invalid flash address specified\n");
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usage(EXIT_FAILURE);
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}
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break;
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case 'S':
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if (!strtou32(optarg, &header.start)) {
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fprintf(stderr, "invalid start address specified\n");
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usage(EXIT_FAILURE);
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}
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break;
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default:
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usage(EXIT_FAILURE);
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break;
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}
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}
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if (ifinfo.name == NULL) {
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fprintf(stderr, "no input file specified\n");
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usage(EXIT_FAILURE);
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}
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if (ofinfo.name == NULL) {
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fprintf(stderr, "no output file specified\n");
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usage(EXIT_FAILURE);
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}
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if (stat(ifinfo.name, &st)) {
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fprintf(stderr, "stat failed on %s\n", ifinfo.name);
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usage(EXIT_FAILURE);
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}
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if (header.sign == NULL) {
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fprintf(stderr, "no signature specified\n");
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usage(EXIT_FAILURE);
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}
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if (header.model == NULL) {
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fprintf(stderr, "no model specified\n");
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usage(EXIT_FAILURE);
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}
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if (!header.flash) {
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fprintf(stderr, "no flash address specified\n");
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usage(EXIT_FAILURE);
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}
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if (!header.start) {
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fprintf(stderr, "no start address specified\n");
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usage(EXIT_FAILURE);
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}
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ifinfo.size = st.st_size;
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obuf.size = ifinfo.size + sizeof(struct header) + sizeof(unsigned short);
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if (obuf.size % sizeof(unsigned short))
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obuf.size++;
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obuf.start = malloc(obuf.size);
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if (!obuf.start) {
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fprintf(stderr, "no memory for buffer\n");
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usage(EXIT_FAILURE);
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}
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memset(obuf.start, 0, obuf.size);
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ibuf.size = ifinfo.size;
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ibuf.start = obuf.start + sizeof(struct header);
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if (fwread(&ifinfo, &ibuf))
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usage(EXIT_FAILURE);
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header.flash = HOST_TO_LE32(header.flash);
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header.size = HOST_TO_LE32(obuf.size - sizeof(struct header));
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header.start = HOST_TO_LE32(header.start);
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memcpy (obuf.start, &header, sizeof(struct header));
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csum = HOST_TO_LE16(fwcsum(&ibuf));
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memcpy(obuf.start + obuf.size - sizeof(unsigned short),
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&csum, sizeof(unsigned short));
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ofinfo.size = obuf.size;
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if (fwwrite(&ofinfo, &obuf))
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usage(EXIT_FAILURE);
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return EXIT_SUCCESS;
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}
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