Bash script to crosscompile rk3188 linux kernel and create linuxroot in a wheezy box

[ramoncio]

I made a bash script to fully automate the crosscompilation process, so anyone can easily build their own kernel+linux on rk devices.
It also installs wheezy in a chroot environment, to create linuxroot with compiled kernel modules, so it can later be copied to microsd.
You can include more wheezy packages with their dependencies very easily, just modify the debootstrap --include swith. You can add lxde there for example if you want to have X installed.

To test it just run this AS ROOT in a wheezy box or VM, it should install croscompilers and some more dependencies:

wget http://solidpc.net/initramfs-3.0.36/crosscompile-script.sh
# I usually have a look at the script before running it
bash -v crosscompile-script.sh |tee crosscompile.log

It copies your existing /etc/passwd and /etc/shadow to the linuxroot /etc directory, so be careful!!!
This is to avoid entering the chroot environment to create users and set passwords, it uses those from the main host.
You might prefer to chroot to the linuxroot directory and do that manually, but you can do it later anyway.

It might take a quite long time to run, depending on your cpu and internet speed, but dependencies and wheezy packages are only downloaded on the first run. git contents are downloaded on every run (about 130mb). It takes less than an hour in my OVH KS16G dedicated server with 100M bw.

When finished all the output files will be in /root/rk3188/kernel/kernels/$DATE/

You can use your custom config, if you place it in /root/rk3188/kernel/config-ramoncio-Linux3188 it gets copied over .config
I can post mine if someone if interested, but I just enabled a couple of modules and that's it.

Changes or comments are appreciated, as I gathered information from several places, and I'm sure it can be improved.


One question, how to enable internal nand memory in .config? I can only see the sd card...

[mark.sch]

Linuxroot tar.gz

Great idea to combine all steps into a single script. Right now I have only CentOS 6.4 and Ubuntu 12.04 handy here, however, most steps seem to run fine on Ubuntu 12.04 too - until kernel compilation where it claims about different architectures.

However, I build the kernel side-by-side on CentOS 6.4 (with my needed kernel .config) and merged the firmware/modules lib folder into linuxroot. The RK3188 (QC802) boots fine with Debian linuxroot, but essential commands like modprobe or ifconfig are missing. I fear something went wrong during linuxroot creation. Do you have a .tar.gz version of your linuxroot to test against?

Best wishes,

mark.sch

[ramoncio]

Great idea to combine all steps into a single script. Right now I have only CentOS 6.4 and Ubuntu 12.04 handy here, however, most steps seem to run fine on Ubuntu 12.04 too - until kernel compilation where it claims about different architectures.

However, I build the kernel side-by-side on CentOS 6.4 (with my needed kernel .config) and merged the firmware/modules lib folder into linuxroot. The RK3188 (QC802) boots fine with Debian linuxroot, but essential commands like modprobe or ifconfig are missing. I fear something went wrong during linuxroot creation. Do you have a .tar.gz version of your linuxroot to test against?

Best wishes,

mark.sch

Hi mark!
I also get some warnings about setting the proper CC variable for the host, I haven't figured that out yet. But the build progress goes on fine and all files are created in kernels/$DATE

You need to run the script in a wheezy box, I haven't tried in ubuntu, it should be adapted, but not too much.

I'll build you a custom linuxroot asap. Just the minimal wheezy so you can install with apt-get or do I include lxde?
If you have a fast internet connection this process is pretty fast, but I run it once from home and it took much more time. That's why I run it in a dedicated server with 100M/100M bw.

Yesterday I finally found the good rk3188 linux kernel here:

http://www.rikomagic.co.uk/forum/viewtopic.php?f=6&t=4696&start=70

I'm still reading it from the begining.

[mark.sch]

Hello Ramoncio,

I was following your mentioned thread also some time ago. Basically I found 4 main sources/guys working on rk3188 kernels:

- http://www.rikomagic.co.uk/downloads/ The AP6210-kernel released from Rikomagic
- https://github.com/omegamoon/rockchip-rk3188-mk908
- https://github.com/aloksinha2001/Linux3188 seems to have most activity right now
- https://github.com/Galland/Linux3188 basically a fork from aloksinha with tweaks

After testing different kernels I work with aloksinha kernel sources right now. I put initramfs, compiled kernel modules and a modified kernel .config and build script (I use CentOS 6.4) into my fork here:

https://github.com/mark-sch/RK3188-Kernel-QC802

picuntu-kernel-qc802.img is the compiled kernel I am actually using, it boots with your debian linuxroot. For the missing modprobe and ifconfig commands I added module-init-tools and net-tools to your qemu-debootstrap setup:

qemu-debootstrap --verbose --variant=minbase --arch=armhf --include=vim,wireless-tools,module-init-tools,net-tools,wpasupplicant,sudo wheezy /root/rk3188/linuxroot http://ftp.debian.org/debian

However, there is no networking right now using the debian linuxroot, did you add further packages to get the network running?

[ramoncio]

Hi Mark,

Internal wifi is quite tricky at the moment. I think my CX-919 device has AP6210 module, but I haven't been able to make it work with different kernels. Also, it seems you can't simply enable all RK wifi modules, you have to choose which one to compile the kernel for, which disables the rest of them.

What I did is to enable ath9k_htc module and used a USB TP-Link adapter. Anyway wifi speed is not good at all, I think there is a problem with too many interrupts for the usb otg module to handle. I also have similar problems with my Hauppauge HVR900 and jerky DVB-T in vdr, someone needs to fix this interrupt issue, they fixed it in raspberri pi kernel and quality has improved drastically since then.

I just received a Linksys USB300M USB ethernet adapter, so I can forget about wifi problems for now, let someone else fight with wifi modules.

I also switched to aloksinha sources, I'll post my modified script this weekend after I successfully compile a couple of kernels.

[mark.sch]

Hi Ramoncio,

networking with RK3066/RK3188 is really a piece of pain. I also use a $5 USB2Ethernet adapter, using dm9601 kernel module. With static IP it works, DHCP is broken, have read several threads about this issue. On RK3066/MK808 I have WLAN working too, but it is loosing connection after some hours - but using a script to monitor network status and doing a service restart is fine.

Right now I am playing side-by-side with wheezy and precise pangolin linuxroot, both seem to work pretty well, will install further software packages to see if it can replace the x64 home server hardware

[arrhenius]

hi

hi ramoncio, thanks for the script i tried it and managed to compile the kernel and create de rootfs, i copied the rootfs to my sd and system booted , but nothing worked , i think the rootfs lacks modules, shoul i copy them to /lib?


Are you improving this script? did it uses the last (and best) sources availables for rk3188?


PD:Soy español

[hiddenbit]

very good script!

Hi ramoncio,

I just tried your script and seems to successfully build a kernel and the rootfs. It sounds nooby, but can u explain how its possible to flash my neo x7? I tried to flash it on my windows 8.1 system, but the driver don't work on that. What I have to do, for flashing it on Debian.

Many thanks!

[ramoncio]

Hi ramoncio,

I just tried your script and seems to successfully build a kernel and the rootfs. It sounds nooby, but can u explain how its possible to flash my neo x7? I tried to flash it on my windows 8.1 system, but the driver don't work on that. What I have to do, for flashing it on Debian.

Many thanks!

Hi hiddenbit, thanks for your input!
This script is a bit outdated (as there are newer kernel sources), but it automates the processes quite well.

I have never flashed from linux, I compile on my dedicated ovh server, download the resulting files and flash from my Win7 laptop.
I have used heimdall to flash a couple of Samsung android devices from linux, but I'm not sure if it will work for rk3188 devices (most likely not). Be careful so you don't end up with a mini brick.

[ramoncio]

Here is the script, the link at the top post is broken a long time ago, maybe someone can adapt it for his needs.

#!/bin/bash
BUILDDIR="/root/rk3188";
FECHA=`date +%Y.%m.%d.%Hh.%Mm`;

# Installs crosscompilation environment, if not installed
PKG="gcc-4.7-arm-linux-gnueabihf";
dpkg-query -l $PKG
if [ $? = 1 ]; then
apt-get -y install git build-essential xapt fakeroot kernel-package u-boot-tools \
zlib1g-dev libncurses5-dev
echo "deb http://www.emdebian.org/debian/ unstable main
deb http://www.emdebian.org/debian wheezy main
" > /etc/apt/sources.list.d/emdebian.list
apt-get update
apt-get -y install emdebian-archive-keyring
apt-get update
xapt -a armhf -m libstdc++6-4.7-dev
apt-get -y install gcc-4.7-arm-linux-gnueabihf
cd /usr/bin
for i in arm-linux-gnueabi*-4.7 ; do ln -s $i ${i%%-4.7} ; done
else echo $PKG already installed
fi

# Installs debootstraped minimal wheezy on $BUILDDIR/linuxroot if not installed
# see here for used tricks http://www.raspberrypi.org/phpBB3/viewtopic.php?f=9&t=850
if [ -d $BUILDDIR/linuxroot ]; then
echo "Already installed wheezy on linuxroot"
else
apt-get y install qemu-user-static binfmt-support debootstrap
mkdir -p $BUILDDIR/linuxroot
cd $BUILDDIR/linuxroot
qemu-debootstrap --verbose --variant=minbase --arch=armhf --include=vim,wireless-tools,wpasupplicant,sudo \
wheezy $BUILDDIR/linuxroot http://ftp.debian.org/debian
echo "nameserver 8.8.8.8" > $BUILDDIR/linuxroot/etc/resolv.conf
echo "nameserver 194.224.52.4" >> $BUILDDIR/linuxroot/etc/resolv.conf
echo "/dev/disk/by-label/linuxroot / ext4 rw,data=writeback,noatime,nodiratime 0 1" > $BUILDDIR/linuxroot/etc/fstab
echo "tmpfs /var/run tmpfs defaults,noatime,nodiratime 0 0" >> $BUILDDIR/linuxroot/etc/fstab
echo "tmpfs /var/log tmpfs defaults,noatime,nodiratime 0 0" >> $BUILDDIR/linuxroot/etc/fstab
echo "tmpfs /tmp tmpfs defaults,noatime,nodiratime,mode=1777 0 0" >> $BUILDDIR/linuxroot/etc/fstab
echo "tmpfs /var/lock tmpfs defaults,noatime,nodiratime 0 0" >> $BUILDDIR/linuxroot/etc/fstab
echo "tmpfs /var/tmp tmpfs defaults,noatime,nodiratime 0 0" >> $BUILDDIR/linuxroot/etc/fstab
echo "vm.swappiness=10" > $BUILDDIR/linuxroot/etc/sysctl
echo "kernel.panic = 10" > $BUILDDIR/linuxroot/etc/sysctl #reboot on k panic
echo "kernel.printk = 3 4 1 3" >> $BUILDDIR/linuxroot/etc/sysctl #less messages flooding console
if [ ! -f /etc/passwd ]; then
#copies local machine users if /etc/passwd is missing
cp /etc/passwd /etc/shadow $BUILDDIR/linuxroot/etc/
fi
fi

mkdir -p $BUILDDIR/kernel/kernels $BUILDDIR/linuxroot
cd $BUILDDIR/kernel
mkdir -p initramfs-3.0.36
cd initramfs
wget http://montenegrojoyeros.com/initramfs-3.0.36/initramfs-3.0.36+.cpio
wget http://montenegrojoyeros.com/initramfs-3.0.36/fakeramdisk.gz
cd ..

#NAME="Linux3188";
NAME="3188-SRC-AP6210";
#NAME="rockchip-rk3188-mk908";
cd $BUILDDIR/kernel
#rm -rf $NAME
if [ -d $NAME ]; then
echo "Already downloaded kernel sources"
else
#git clone https://github.com/omegamoon/$NAME.git
#git clone https://github.com/aloksinha2001/$NAME.git
#git clone https://github.com/Galland/$NAME.git
git clone https://github.com/linuxium/$NAME.git
mv $NAME/kernel_ruikemei/* $NAME/kernel_ruikemei/.[^.]* $NAME/
#cp arch/arm/configs/rk3188_dongle_defconfig .config

#git clone https://github.com/linuxium/$NAME/kernel.git $NAME
fi

cd $NAME
cp .config .config-$NAME-$FECHA
#sed -i "s,CONFIG_INITRAMFS_SOURCE=\"\",CONFIG_INITRAMFS_S OURCE=\"../initramfs/initramfs-3.0.36-$NAME+.cpio\",g" .config
#sed -i "s,CONFIG_INITRAMFS_SOURCE=\"\",CONFIG_INITRAMFS_S OURCE=\"../initramfs/initramfs-3.0.36-linuxium+.cpio\",g" .config
mv .config config.bak
make KDIR=./ ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- mrproper
mv config.bak .config
cp arc/arm/configs/rk3188_mk908_defconfig .config
cp ../config-ramoncio-$NAME .config
#define environment
export ARCH=arm
export KDIR=./
export GYP_DEFINES="target_arch=arm"
export CC=arm-linux-gnueabihf-gcc
export CXX=arm-linux-gnueabihf-g++
export AR=arm-linux-gnueabihf-ar
export CC_host=gcc
export CXX_host=g++
export DEB_HOST_ARCH=armhf
export MAKEFLAGS="CC=arm-linux-gnueabihf-gcc"
export CONCURRENCY_LEVEL=`grep -m1 cpu\ cores /proc/cpuinfo | cut -d : -f 2`
#build
cd $BUILDDIR/kernel/$NAME
DEB_HOST_ARCH=armhf fakeroot make-kpkg --arch arm --cross-compile arm-linux-gnueabihf- --initrd kernel_image kernel_headers
make KDIR=./ ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j5 INSTALL_MOD_PATH=output modules > /dev/null
make KDIR=./ ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j5 INSTALL_MOD_PATH=output modules_install > /dev/null
#mkinitramfs -c -o ../initramfs-3.0.36/initramfs-3.0.36-$NAME+.cpio
wget http://montenegrojoyeros.com/initramfs-3.0.36/mkbootimg
cp ../initramfs-3.0.36/mkbootimg .
chmod +x mkbootimg
#makes recovery image
./mkbootimg --kernel arch/arm/boot/Image --ramdisk ../initramfs-3.0.36/fakeramdisk.gz --base 60400000 --pagesize 16384 --ramdiskaddr 62000000 -o recovery-3.0.36-$NAME.img
#compresses and sorts output
mkdir -p $BUILDDIR/kernel/kernels/$NAME-$FECHA
cp .config $BUILDDIR/kernel/kernels/$NAME-$FECHA/config-3.0.36-$NAME-$FECHA
cp ../initramfs-3.0.36/initramfs-3.0.36+.cpio $BUILDDIR/kernel/kernels/$NAME-$FECHA/
cd output/lib
rm -rf $BUILDDIR/linuxroot/lib/*
cp -a * $BUILDDIR/linuxroot/lib/
tar cfvz $BUILDDIR/kernel/kernels/$NAME-$FECHA/modules-3.0.36-$NAME-$FECHA.tgz * > /dev/null
cd ../../
cp recovery-3.0.36-$NAME.img $BUILDDIR/kernel/kernels/$NAME-$FECHA/recovery-3.0.36-$NAME-$FECHA.img
mv ../*.deb $BUILDDIR/kernel/kernels/$NAME-$FECHA/
cd $BUILDDIR/linuxroot/
tar cfvz $BUILDDIR/kernel/kernels/$NAME-$FECHA/linuxroot-wheezy-3.0.36-$NAME-$FECHA.tgz * > /dev/null
cd $BUILDDIR
exit 0


mkdir /mnt/vdrroot/
vgscan
vgchange -a y
mount /dev/mapper/vdr-root /mnt/vdrroot/
mount /dev/sda1 /mnt/vdrroot/boot
mount -o bind /proc /mnt/vdrroot/proc
mount -o bind /dev /mnt/vdrroot/dev
mount -o bind /dev/pts /mnt/vdrroot/dev/pts
mount -o bind /sys /mnt/vdrroot/sys
chroot /mnt/vdrroot/

....

exit
umount /mnt/vdrroot/proc
umount /mnt/vdrroot/dev
umount /mnt/vdrroot/dev/pts
umount /mnt/vdrroot/sys