Ivo van Geel wrote: > Hi DragonK, > > The CPU seems to be a Ralink RT2880 > (http://www.ralinktech.com/ralink/data/RT2880.pdf). > This kind of CPU is also used in the T-Com Speedport W700V (see > http://wiki.openwrt.org/TableOfHardware). > > Support for this CPU is a Work In Progress, there is no running version > of OpenWRT available for this CPU, yet. > (http://wiki.openwrt.org/OpenWrtDocs/Hardware/T-Com/Speedport_W700V) > It is going to be very, very difficult to create a running version of > OpenWRT for your router. > > > Kind regards, > Ivo van Geel. > Hello everybody,
I've made a little progress since the last mail. Here is the thing: I'm trying to reverse engineer the firmware image ( http://www.belkin.com/support/article/?lid=en&pid=f5d8231-4&aid=5927&scid=854&fid=4063&fn=f5d8231v5_ww_5.01.05.bin ) for this router in order to modify it and perhaps enable the telnet daemon. This is what I've found until now: 1) The device uses U-Boot 2) The firmware image has the following structure: Belkin header + U-Boot header + gzipped kernel + squashfs image. I've created a template for WinHEX (attached to this mail) which decodes the information I've identified in the firmware file. The problems I'm facing now are the following - I can't exactly determine the offset of the SquashFS inside the fw img based on header information (but it can be located based on its signature 'hsqs'). - I don't seem to be able to mount the extracted filesystem. When I attempt to mount the FS, I get the following: ------------------------------------------------------------------------------ root# mount ./fw_squash_stripped.bin ./a -o loop mount: wrong fs type, bad option, bad superblock on /dev/loop2, .... root# dmesg | tail squashfs: version 3.3 (2007/10/31) Phillip Lougher SQUASHFS error: zlib_inflate returned unexpected result 0xfffffffd, srclength 8192, avail_in 596, avail_out 8192 SQUASHFS error: sb_bread failed reading block 0x712 SQUASHFS error: Unable to read cache block [1c41a8:1d95] SQUASHFS error: Unable to read inode [1c41a8:1d95] ------------------------------------------------------------------------------ Can anybody help me out here? Has anybody seen anything similar before? From what I understand squashfs is able to mount both little endian and big endian filesystems so I don't think this is the problem. Also, my kernel doesn't have the squashfs-lzma patch, but I've tried to mount the image using a lzma-enabled kernel and that's not it either. Also, I have another question: In this image of the router's board ( http://img411.imageshack.us/img411/1251/a31ndiua5sp4.jpg ) , the encircled red thing could be a serial port? If so, how could I connect to it (because the "pins" are only on the board, there's no connector) ? Thanks! _______________________________________________ openwrt-users mailing list [email protected] http://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-users
