[maemo-developers] [maemo-developers] Patching Nokia 770 Kernel to get DLINK DUB-E100 Rev B to work

[From: Simon Moore]

My method works by recompiling the whole kernel and building the 
modules into the kernel - it should be possible to compile just the 
modules as loadable modules but I can't find any HowTo's on this, so 
if there is anyone out there that can tell me how to compile a kernel 
module in scratchox, I'd much appreciate it.

In the mean time, in case anyone else read the post about DLINK 
DUB-E100 working out of the box and bought theirs to find it didn't - 
here is my how to.

Patching Kernel to get DLINK DUB-E100 Rev B to work (Rev A should 
work out of the box and actually uses a different chip).

Rev B uses AX88178

Using asix.c, usbnet.c usbnet.h from 2.6.18 Kernel Source (just 
download from kernel.org)  (The Nokia is on 2.6.16 which doesn't have 
the basic AX88178 code in it)

In the directory with the above files
patch -iusb_net_e100.patch asix.c
patch -iusb_net_e100.patch2 asix.c
patch -iusb_net_e100.patch0

No doubt in a later kernel these patches will be built in.

##Build kernel in scratchbox (vanila kernel)

#First Time based on http://maemo.org/maemowiki/HowTo_KernelCompilation
sbox-config -ct MAEMO_KERNEL
#select newly installed gcc 3.4 toolchain
#select qemu-arm as CPU transparency mode
#select debian devkit
#3 Select the newly created target, install ARM rootstrap, and finish 
toolchain setup

sbox-config -st MAEMO_KERNEL
sbox-config -er /scratchbox/packages/Maemo_Dev_Platform_RS_v1.1_arm.tgz
sbox-config -cc
sbox-config -cf
mkdir ~/kernel-build
sbox-config -st MAEMO_KERNEL
apt-get update
cd ~/kernel-build
fakeroot apt-get install kernel-source-2.6.16 kernel-package  #don't 
think we actually need this in IT2006, doesn't seem to work
apt-get source su-18-kernel
cd su-18-kernel-2.6.16
dpkg-buildpackage -rfakeroot -uc -us -sa -d ##builds it
fakeroot dpkg -i ../su-18-kernel_*.deb  ##installs


cp asix.c 
/scratchbox/users/[username]/scratchbox/users/[username]/home/[username]/kernel-build/su-18-kernel-2.6.16/kernel-source-2.6.16/drivers/usb/net/

cp usbnet.h 
/scratchbox/users/[username]/scratchbox/users/[username]/home/[username]/kernel-build/su-18-kernel-2.6.16/kernel-source-2.6.16/drivers/usb/net/

cp usbnet.c 
/scratchbox/users/[username]/scratchbox/users/[username]/home/[username]/kernel-build/su-18-kernel-2.6.16/kernel-source-2.6.16/drivers/usb/net/

##Build in scratchbox
#Second time, modified

#1 Edit ~/kernel-build/su-18-kernel-2.6.12.3/debian/rules so that 
modifications may be done
#Make sure the following two lines are commented or removed completely:
#build-stamp section: tar jxf /usr/src/kernel-source-$(SOURCE_VERSION).tar.bz2
#clean section: rm -rf kernel-source-$(SOURCE_VERSION)

chmod a+w 
~/kernel-build/su-18-kernel-2.6.12.3/kernel-source-2.6.12.3/arch/arm/configs/n770_defconfig 

# Make your modifications to 
/kernel-build/su-18-kernel-2.6.12.3/kernel-source-2.6.12.3/arch/arm/configs/n770_defconfig 

# You should set USBNET and ASIX to Y from M (i.e. so it is compiled 
in kernel not as module - cause I have no idea how to compile just 
the module, if you do let me know)

cd su-18-kernel-2.6.16
vi kernel-source-2.6.16/Makefile
#change to EXTRAVERSION = .27 #Only needed in second release of 
IT2006 using First release source

dpkg-buildpackage -rfakeroot -uc -us -sa -d
fakeroot dpkg -i ../su-18-kernel_*.deb

##Deploy to device
./flasher-2.0 --query-root-device --read-board-id --query-rd-mode
./flasher-2.0 -l -b -k 
/scratchbox/users/[username]/targets/MAEMO_KERNEL/usr/share/osso/kernels/zImage-su-18-200645

Once happy
Flash permanently
./flasher-2.0 -f -k 
/scratchbox/users/[username]/targets/MAEMO_KERNEL/usr/share/osso/kernels/zImage-su-18-200645


On device (assuming everything connected up) as ROOT
Auto DHCP config
udhcpc

OR

Auto DHCP config and request an IP
udhcpc -r 192.168.1.110

OR

Manually configure
ifconfig etho 192.168.1.59
route add default gw 192.168.1.1
echo "nameserver 192.168.1.1" > /etc/resolv.conf
echo "nameserver 192.168.1.1" > /tmp/resolv.conf.eth0

iconfig to show details of whatever you setup

---
Patches I used attatched

Or the correct ones from online.

http://www.kernel.org/pub/linux/kernel/people/gregkh/usb/2.6/2.6.18/usb-usbnet-add-unlink_rx_urbs-call-to-allow-for-jumbo-frames.patch
http://www.kernel.org/pub/linux/kernel/people/gregkh/usb/2.6/2.6.18/usb-asix-add-ax88178-support-and-many-other-changes.patch

http://www.kernel.org/pub/linux/kernel/people/gregkh/usb/2.6/2.6.18/usb-asix-add-alternate-device-ids-for-dlink-dub-e100-rev-b1.patch
OR
http://mailman.laptop.org/pipermail/devel/2006-August/001466.html

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