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-rw-r--r--target/utils/src/motorola-bin.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/target/utils/src/motorola-bin.c b/target/utils/src/motorola-bin.c
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+/*
+ * motorola-bin.c
+ *
+ * Copyright (C) 2005-2006 Mike Baker,
+ * Imre Kaloz <kaloz@openwrt.org>
+ * OpenWrt.org
+ *
+ * $Id$
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+/*
+ * February 1, 2006
+ *
+ * Add support for for creating WA840G and WE800G images
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <netinet/in.h>
+
+unsigned long *crc32;
+
+void init_crc32()
+{
+ unsigned long crc;
+ unsigned long poly = ntohl(0x2083b8ed);
+ int n, bit;
+ if ((crc32 = (unsigned long *) malloc(256 * sizeof(unsigned long))) == (void *)-1) {
+ perror("malloc");
+ exit(1);
+ }
+ for (n = 0; n < 256; n++) {
+ crc = (unsigned long) n;
+ for (bit = 0; bit < 8; bit++)
+ crc = (crc & 1) ? (poly ^ (crc >> 1)) : (crc >> 1);
+ crc32[n] = crc;
+ }
+}
+
+unsigned int crc32buf(char *buf, size_t len)
+{
+ unsigned int crc = 0xFFFFFFFF;
+ for (; len; len--, buf++)
+ crc = crc32[(crc ^ *buf) & 0xff] ^ (crc >> 8);
+ return crc;
+}
+
+struct motorola {
+ unsigned int crc; // crc32 of the remainder
+ unsigned int flags; // unknown, 105770*
+ char *trx; // standard trx
+};
+
+void usage(void) __attribute__ (( __noreturn__ ));
+
+void usage(void)
+{
+ printf("Usage: motorola-bin [-device] [trxfile] [binfile]\n\n");
+ printf("Known devices: 1 - WR850G | 2 - WA840G | 3 - WE800G\n");
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ unsigned int len;
+ int fd;
+ int c;
+ void *trx;
+ struct motorola *firmware;
+
+ // verify parameters
+
+ if (argc!=4)
+ {
+ usage();
+ }
+
+ // mmap trx file
+ if (((fd = open(argv[2], O_RDONLY)) < 0)
+ || ((len = lseek(fd, 0, SEEK_END)) < 0)
+ || ((trx = mmap(0, len, PROT_READ, MAP_SHARED, fd, 0)) == (void *) (-1))
+ || (close(fd) < 0)) {
+ perror("open/malloc");
+ exit(1);
+ }
+
+ // create a firmware image in memory
+ // and copy the trx to it
+ firmware = malloc(len+8);
+ memcpy(&firmware->trx,trx,len);
+ munmap(trx,len);
+
+ // setup the motorola headers
+ init_crc32();
+
+ // setup the firmware magic
+
+ while ((c = getopt(argc, argv, "123")) !=-1) {
+ switch (c) {
+ case '1':
+ firmware->flags = ntohl(0x10577050); // Motorola WR850G
+ break;
+ case '2':
+ firmware->flags = ntohl(0x10577040); // Motorola WA840G
+ break;
+ case '3':
+ firmware->flags = ntohl(0x10577000); // Motorola WE800G
+ break;
+ default:
+ usage();
+ }
+ }
+
+ firmware->crc = htonl(crc32buf((char *)&firmware->flags,len+4));
+
+ // write the firmware
+ if (((fd = open(argv[3], O_CREAT|O_WRONLY,0644)) < 0)
+ || (write(fd,firmware,len+8) != len+8)
+ || (close(fd) < 0)) {
+ perror("write");
+ exit(-1);
+ }
+
+ free(firmware);
+
+ return 0;
+}