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authormbm <mbm@3c298f89-4303-0410-b956-a3cf2f4a3e73>2005-03-06 03:34:52 +0000
committermbm <mbm@3c298f89-4303-0410-b956-a3cf2f4a3e73>2005-03-06 03:34:52 +0000
commitf77b88d124ea1c900f9cf5e04046939aad48bbe1 (patch)
tree4c6922d42353c39b46dcd7cd09982fbe9c1f9765 /target/utils/src/motorola-bin.c
parent7d3d15851a890855f0a752304fa50e5d8e927222 (diff)
nbd's makefile/menuconfig rewrite
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@307 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/utils/src/motorola-bin.c')
-rw-r--r--target/utils/src/motorola-bin.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/target/utils/src/motorola-bin.c b/target/utils/src/motorola-bin.c
new file mode 100644
index 0000000000..476afe32f2
--- /dev/null
+++ b/target/utils/src/motorola-bin.c
@@ -0,0 +1,109 @@
+/*
+ * motorola-bin.c
+ *
+ * Copyright (C) 2005 Mike Baker
+ * 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.
+ *
+ */
+
+#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, 10577050
+ char *trx; // standard trx
+};
+
+int main(int argc, char **argv)
+{
+ unsigned int len;
+ int fd;
+ void *trx;
+ struct motorola *firmware;
+
+ if (argc<3) {
+ printf("%s <trx> <motorola.bin>\n",argv[0]);
+ exit(0);
+ }
+
+ // mmap trx file
+ if (((fd = open(argv[1], 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();
+ firmware->flags = ntohl(0x10577050);
+ firmware->crc = htonl(crc32buf((char *)&firmware->flags,len+4));
+
+ // write the firmware
+ if (((fd = open(argv[2], O_CREAT|O_WRONLY,0644)) < 0)
+ || (write(fd,firmware,len+8) != len+8)
+ || (close(fd) < 0)) {
+ perror("write");
+ exit(-1);
+ }
+
+ free(firmware);
+
+ return 0;
+}