Dobrica Pavlinušić's random unstructured stuff

DSM-G600: Revision 17

Collection of some hints about Debian installation on my D-Link DSM-G600:

{toc: }

^ firmware (kernel+busybox)

It will fix various problems, including, but not limited to, problems with web interface in firefox.

http://download.dsmg600.info/people/sala/fwimage-04-sala-20070128

I tried to build firmware from source, but had various problems with building gcc. Thet are mostly related to gdb, but after a few random patches it passed compilation (but is broken, because I just commented offending lines).

^^ usbfs

I also want usbfs which generate compilation errors because of missing files in `include/linux/usbdevice_fs.h`

.pre
#define USBDEVFS_DISCONNECT _IO('U', 22)
#define USBDEVFS_CONNECT _IO('U', 23)
.pre

I copied them from current 2.6 kernel and this made it compile.

^ Debian installation

Based on "instructions on wiki"<http://dsmg600.info/howto:chroot_debian> and "post on forum"<http://forum.dsmg600.info/t17-Debian-howto.html>

.pre
cd /mnt/HD_a2
export DEBOOTSTRAP_DIR=`pwd`/usr/lib/debootstrap
export PATH=$PATH:/mnt/HD_a2/bin:/mnt/HD_a2/sbin
./usr/sbin/debootstrap --arch powerpc etch /mnt/HD_a2/debian http://ftp.de.debian.org/debian
cp /etc/resolv.conf /mnt/HD_a2/debian/etc/resolv.conf
# prepare chroot jail
mount -t proc proc /mnt/HD_a2/debian/proc
cd /mnt/HD_a2/
./chroot /mnt/HD_a2/debian /bin/bash
# install additional packages
apt-get update
apt-get install locales
dpkg-reconfigure locales
passwd root
apt-get install dropbear hotplug
.pre

^ USB printer

Kernel module for USB printers for 2.4.21-pre4 kernel: {file: printer.o}

After installation of `cupsys` and `foomatic` all went smoothly, USB printer ("Samsung ML-2510"<http://openprinting.org/show_printer.cgi?recnum=Samsung-ML-2510>) was found and configured automatically. There are a few more details in "this forum thread"<http://forum.dsmg600.info/t105-Printing.html>.

^ Kernel 2.6

I have a creazy idea: this device *should* run 2.6! So, here is my work in progress...

According to "patches for kurobox"<http://genbako.vodapone.com/> which is quite similar to our hardware, there isn't any changes in current upstream version execept for missing drivers. For DSM G600 that boils town to "IP1000"<http://www.icplus.com.tw/driver-pp-IP1000A.html> network driver, which still isn't in mainland, but seems to be referenced on LKLM as possible inclusion.

* patch against upstream 2.6.21.1 {file: linux-2.6.21.1-dsmg600.diff.gz} (adds IP1000A driver for LAN, wifi missing)

^^ Compilation notes

Compile kernel and convert it to binary format for "loader.o"<http://download.dsmg600.info/people/sala/loader.o>:

.pre
. env.sh
make
powerpc-linux-objcopy -O binary vmlinux
scp vmlinux disk:/tmp/
.pre

Then try out your kernel on DSM:

.pre
cd /mnt/HD_a2 && sync && insmod /mnt/HD_a2/loader.o kernel=/mnt/HD_a2/debian/tmp/vmlinux
.pre

Please note that *you must use full path* to kernel binary. Also note that all paths are customized for my particular device (to help with copy/paste :-)

^ Emulation

It's useful to have development environment for DSM on another machine, so I tried to use "QEMU"<http://fabrice.bellard.free.fr/qemu/> to do so.

* patch which adds support for "platforms based on MPC82xx"<http://qemu-forum.ipi.fi/viewtopic.php?t=1528>
* "Installing Debian Sarge for the PowerPC under the QEMU"<http://overselfresearch.com/kb/qemu.html> which I updated to etch to be in sync with DSM