View source for LimHD:Firmware

== Building a new Firmware ==

What this patch gives you:

* enable telnetd
* enable ftpd
* remount ntfs with read/write using fuse
* enable ext2 support
* optional add ext2 support to curacao


Want to just download binary version?

 [http://www.lundman.net/ftp/lim/update-1206-08-plus.bin update-1206-08-plus.bin] Patched 2007/12/17 firmware. Untested. You have to rename it to '''update.bin''' 2008/01/04

 [http://www.lundman.net/ftp/lim/update-1206-plus.bin update-1206-plus.bin] Patched 2007/12/06 firmware. Untested. You have to rename it to '''update.bin''' 2007/12/21
 
 [http://www.lundman.net/ftp/lim/update-1130-plus.bin update-1130-plus.bin] Patched 2007/11/30 firmware. Untested. You have to rename it to '''update.bin''' 2007/11/30
 
 [http://www.lundman.net/ftp/lim/update-1026-plus.bin update-1026-plus.bin] Patched 2007/10/26 firmware. I personally run this one. You have to rename it to '''update.bin''' 2007/11/10

Got a newer firmware you want to patch yourself? Just run the patch script inside. Does everything on this page, except hex edit '''curacao''' for ext2. See below.

 [http://www.lundman.net/ftp/lim/lim-firmware-utils.tgz lim-firmware-utils.tgz] 2007/11/10

Read about how to use [[LimHD:Firmware#Using_your_special_LimHD200i_Firmware|FTP]] here


=== Unpack firmware ===

 '''unrar x update.rar'''
 '''mount -o loop -t romfs update.bin /mnt'''
 '''rsync -arv /mnt limdata

Now all the work is in '''limdata/''' For example, you should have '''limdata/linux.bin.gz'''


=== telnetd ===

Make sure you have a symlink for telnetd.

 '''cd limdata/sbin/'''
 '''ln -s ../bin/busybox telnetd'''

Add it to start up:

 '''cd limdata/etc/init.d/'''
 '''vi S30network'''

add five line, between the existing lines near the end:

 insmod gpio_int.o
 '''insmod fuse.o'''
 '''mkdir /tmp/dev/'''
 '''mknod /tmp/dev/fuse -m 0666 c 10 229'''
 '''/usr/sbin/telnetd &'''
 '''/usr/sbin/inetd /etc/inetd.conf &''' 
 cd /curacao
 ./curacao /mnt /dev/ir

'' '''Don't forget the & sign.''' ''

=== fuse support ===

Copy the fuse binaries:

 '''cd /downloaded_files/'''
 '''cp fuse.o limdata/'''
 '''cp fusermount ntfs-3g remount limdata/usr/bin/'''
 '''cp ftpd limdata/usr/bin/'''
 '''cp busybox_ext2 limdata/bin/'''
 '''cp inetd.conf limdata/etc/'''

Create symlinks
 '''cd /sbin/'''
 '''ln -s ../bin/busybox_ext2 e2fsck'''
 '''ln -s ../bin/busybox_ext2 e2label'''
 '''ln -s ../bin/busybox_ext2 fdisk'''
 '''ln -s ../bin/busybox_ext2 fsck'''
 '''ln -s ../bin/busybox_ext2 fsck.ext2'''
 '''ln -s ../bin/busybox_ext2 mke2fs'''
 '''ln -s ../bin/busybox_ext2 mkfs.ext2'''
 '''ln -s ../bin/busybox_ext2 tune2fs'''

=== ext2 support in curacao ===

If you want to be able to use internal HDD with ext2 filesystem type, you need to do this patch.
Edit '''curacao''' with your favorite hex editor. I use emacs, in hexl-mode, but anything will work. (Not vi though).
For details you can view [[LimHD:EXT2|ext2]] link, but essentially, find the string '''vfat''' near the '''/dev/ide/''' section. (Which is after '''/dev/scsi/''' - ie USB), and replace this string with "ext2". Also change '''iocharset=utf8''' with '''nocheck'''.

BEFORE:

 002c8940: 6172 740a 0000 0000 2f64 6576 2f69 6465  art...../dev/ide
 002c8950: 2f68 6f73 7430 2f62 7573 302f 7461 7267  /host0/bus0/targ
 002c8960: 6574 302f 6c75 6e30 2f70 6172 7425 6400  et0/lun0/part%d.
 002c8970: 2f6d 6e74 2f48 4425 642f 0000 7666 6174  /mnt/HD%d/..vfat
 002c8980: 0000 0000 696f 6368 6172 7365 743d 7574  ....iocharset=ut
 002c8990: 6638 0000 2573 2564 0000 0000 6e74 6673  f8..%s%d....ntfs
 002c89a0: 0000 0000 6e6c 733d 7574 6638 0000 0000  ....nls=utf8....
 
AFTER:

 002c8940: 6172 740a 0000 0000 2f64 6576 2f69 6465  art...../dev/ide
 002c8950: 2f68 6f73 7430 2f62 7573 302f 7461 7267  /host0/bus0/targ
 002c8960: 6574 302f 6c75 6e30 2f70 6172 7425 6400  et0/lun0/part%d.
 002c8970: 2f6d 6e74 2f48 4425 642f 0000 '''6578''' '''7432'''  /mnt/HD%d/..'''ext2'''
 002c8980: 0000 0000 '''6e6f''' '''6368''' '''6563''' '''6b00''' 743d 7574  ....'''nocheck.'''t=ut
 002c8990: 6638 0000 2573 2564 0000 0000 6e74 6673  f8..%s%d....ntfs
 002c89a0: 0000 0000 6e6c 733d 7574 6638 0000 0000  ....nls=utf8....

Don't forget to null-terminate the '''nocheck''' string. 

If you are using '''emacs hexl-mode''' it is important that you use '''find-file-literally''' to load the file so that emacs does not attempt to do locale conversions. 

Key sequence usage for emacs is:

 emacs -nw 
 M-x find-file-literally
 curacao
 M-x hexl-mode      (M-x means ESC-x, or if setup correctly, ALT-x)
 C-s vfat           (C-s is ctrl-s, or Search.)
 C-s                (Second C-s searches for 2nd occurence of VFAT)
 C-g                (Stop search)
 M-x overwrite-mode
 Position cursor to start of '''vfat'''
 ext2
 Position cursor to start of '''iocharset=ut8'''
 nocheck
 M-C-x              (or, ESC then ctrl-x to input hex number)
 00                 (insert hex 00)
 C-x C-s            (Save buffer, answer yes to losing undo buffer)
 C-x C-c            (Quit emacs)

=== Read/Write ext2 ===

You can optionally make '''curacao''' mount the '''ext2''' filesystem as read/write, but since you can remount it from the '''ftpd''' this is strictly not required. See [[LimHD:EXT2|ext2]] page for more information.

Near the address '''0x56910''' look for '''07''' and make it '''06'''. The first one is for the '''vfat''' mount, which we changed above. The second is for '''ntfs'''. Don't bother with the second as the kernel only has read-only support for '''ntfs'''.

 00056910: 0610 a0e1 9020 9fe5 '''07'''30 a0e3 4e4d 09eb  ..... ...0..NM..
 00056920: 0000 50e3 0800 000a 8030 9fe5 0030 8de5  ..P......0...0..
 00056930: 6000 4be2 8010 4be2 7420 9fe5 0730 a0e3  `.K...K.t ...0..

In the 1026 firmware it is here:

 00057e90: 0520 a0e1 9d49 09eb 9c30 9fe5 '''07'''30 8de5  . ...I...0...0..
 00057ea0: 0700 a0e1 0610 a0e1 9020 9fe5 0030 a0e3  ......... ...0..
 00057eb0: 7d64 09eb 0000 50e3 0800 000a 8030 9fe5  }d....P......0..

In retrospect, mounting the HDD in read/write isn't a great idea. Since this device needs plenty of reboots, and you can not do that cleanly. I have '''fsck''' but it needs a huge amount of memory. If you kill everything, '''curacao''', smbmount etc, I could '''just''' run it. That's on a 100Gb partition, so not very nice. Seriously, you will need '''swap''' partition. So I will go back to read-only, and use '''FTP SITE MOUNT''' to make it read/write temporarily.

=== Pack new firmware up ===

 '''genromfs -f update.bin -d limdata/ -V MAMBO'''

As a safety, if you run:

 '''hexdump -C ~/update.bin |head'''
 00000000  2d 72 6f 6d 31 66 73 2d  00 ce b5 d0 4f 0a 22 d5  |-rom1fs-....O.".|
 00000010  4d 41 4d 42 4f 00 00 00  00 00 00 00 00 00 00 00  |MAMBO...........|
 00000020  00 00 00 49 00 00 00 20  00 00 00 00 d1 ff ff 97  |...I... ........|
 00000030  2e 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 00000040  00 00 00 60 00 00 00 20  00 00 00 00 d1 d1 ff 80  |...`... ........|
 00000050  2e 2e 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 00000060  00 15 22 e2 00 00 00 00  00 15 22 58 d2 8e 17 f7  |.."......."X....|
 00000070  62 69 74 6d 61 70 2e 62  69 6e 00 00 00 00 00 00  |bitmap.bin......|
 00000080  52 41 57 44 8c 87 87 17  3c 0a 00 00 00 00 00 00  |RAWD....<.......|

Since '''bitmap.bin''' is in the root of '''limdata/''' it looks correct.


=== Flash the lim ===

Copy '''update.bin''' to your LimHD200i's internal HDD, into a directory called '''update''' so you end up with '''/update/update.bin''' then using the LimHD200i's menu, select '''Update App'''.

If you download the binary package for updating firmwares, you can also run the script that does all this for you. Except for binary patch '''curacao'''. Binary patch curacao yourself and name it '''curacao_ext2''' in the same directory that contains the binary package files.

 [lundman@test utils]$ '''./firmware_install ../update1026/update.bin'''
 Attempting to mount
 Password:
 Creating limdata/ directory (please wait)
 Making sure telnetd symlink is there (ignore error)
 Copying files...
 Patching limdata/etc/init.d/S30network ...
 If you have patched curacao to mount ext2, name it curacao_ext2 in this directory
 Copying in patched curacao_ext2
 Packing up new firmware
 -rw-rw-r-- 1 lundman lundman 14523392 Nov  1 15:27 update.bin
 00000000  2d 72 6f 6d 31 66 73 2d  00 dd 9a 10 4e fb 3e 95  |-rom1fs-....N.>.|
 00000010  4d 41 4d 42 4f 00 00 00  00 00 00 00 00 00 00 00  |MAMBO...........|
 00000020  00 00 00 49 00 00 00 20  00 00 00 00 d1 ff ff 97  |...I... ........|
 00000030  2e 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 00000040  00 00 00 60 00 00 00 20  00 00 00 00 d1 d1 ff 80  |...`... ........|
 00000050  2e 2e 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 00000060  00 15 22 e2 00 00 00 00  00 15 22 58 d2 8e 17 f7  |.."......."X....|
 00000070  62 69 74 6d 61 70 2e 62  69 6e 00 00 00 00 00 00  |bitmap.bin......|
 00000080  52 41 57 44 8c 87 87 17  3c 0a 00 00 00 00 00 00  |RAWD....<.......|
 00000090  09 00 00 00 00 00 00 00  d8 8c 87 17 4e 00 00 00  |............N...|


Good luck.



=== Using your special LimHD200i Firmware ===

You can '''telnet''' to you lim and login as '''root'''. You can FTP to the lim, login as '''root''' using any password (But not empty).

To remount the HDD send the commands:

 ftp> '''site mount'''
 200- Executing remount command:
 Currently mounted filesystems are: 
 /mnt/HD2 ext2
 /mnt/HD1 ntfs
 200 MOUNT ' ' finished.
 
 ftp> '''site mount /mnt/HD1'''
 200- Executing remount command:
 Attempting remount of /dev/ide/host0/bus0/target0/lun0/part1 as ntfs
 Unmounting /mnt/HD1 ...
 Return code 0
 200 MOUNT '/mnt/HD1' finished.
 
 ftp> '''site mount'''
 200- Executing remount command:
 Currently mounted filesystems are: 
 /mnt/HD2 ext2
 /mnt/HD1 ntfs-3g (read/write)
 200 MOUNT ' ' finished.

If you are using '''ntfs-3g''' I would recommend you unmount the HDD cleanly, before playing. You can do this by;

 ftp> '''site mount /mnt/HD1'''
 200- Executing remount command:
 Attempting remount of /dev/ide/host0/bus0/target0/lun0/part1:fuse
 Unmounting /mnt/HD1 ...
 Mounting as ntfs
 Return code 0
 200 MOUNT '/mnt/HD1' finished.

Ie. The same command again. It switches between kernel read-only ntfs, and fuse's read/write ntfs-3g.

Also note, for some reason the FTP command is touchy. You might have to issue the mount command a couple of times before it sees the '''/mnt/HD1''' argument. Not sure why, it works perfectly when it is not from boot.


Word of warning. The FTP transfer speeds are abysmal, but I have no time to attempt to speed things up.

 FTP upload   NTFS-3G:  '''500 KB/s'''
 FTP upload   ext2   : 2000 KB/s
 FTP download NTFS-3G: 1100 KB/s
 FTP download ext2   : 3500 KB/s
 FTP download ntfs   : 3200 KB/s

Perhaps the upload buffer-size can be tweaked? Or is it fuse? fuse can do about 600 KB/s with block-size of 8192, 16384 and 32768. Block-size of 4096 is about half that speed. Ok, I made FTPD use 8192, and now I went from 100 KB/s to 500 KB/s. This is about the speed of fuse, so if you want more, you have to opimise fuse and/or ntfs-3g. Perhaps try compiling it with -O.