Bootstrap a minimal debian rootfs for sunxi boards https://github.com/bleuchtang/sunxi-debian

Émile Morel ea2a0c8616 readme - add postboot command		10 years ago
olinux	5ee0e21d58 create_sunxi - use create_or_pull for all git repository	10 years ago
.gitignore	7a67dbb068 gitignore - add *.swp	10 years ago
Dockerfile	be44a16703 Dockerfile - remove useless lines	10 years ago
README.md	ea2a0c8616 readme - add postboot command	10 years ago

olinux-a20-lime2

Bootstrap a minimal debian for olinuxino-a20-lime2

Thanks to lukas2511 for quick bootstrap.

Build docker image

sudo docker pull debian:stable
git clone https://github.com/bleuchtang/olinuxino-a20-lime2
cd olinuxino-a20-lime2 && sudo docker build -t debian/olinux .

Build minimal arm debootstrap

We cannot perform a debootstrap in dockerfile because dockerfile doesn't accept privileged mode. For more details see docker issue

sudo docker run --privileged -i -t -v $(pwd)/olinux/:/olinux/ debian/olinux sh ./olinux/create_arm_debootstrap.sh

Build sunxi kernel and boot files

You shoud have both debootstrap and sunxi directories in olinux/

sudo docker run --privileged -i -t -v $(pwd)/olinux/:/olinux/ debian/olinux sh ./olinux/create_sunxi_boot_files.sh

Install on a SD card

Setup SD card device

Find your device card (with dmesg for instance) and put it in a variable.

mmc=/dev/sdc

Partitioning

Make 2 partitions; one for boot files (kernel, file with custom boot args...), and another for root fs.

parted -s ${mmc} mklabel msdos
parted -a optimal ${mmc} mkpart primary fat32 1 16MiB
parted -a optimal ${mmc} mkpart primary fat32 16MiB 100%
mkfs.fat -F 32 ${mmc}1
mkfs.ext4 ${mmc}2

Installation

Boot partition

Make SD card bootable, add kernel your previously builded and file with motherboard paramaters.

mkdir -p /media/usb
dd if=olinux/sunxi/u-boot-sunxi/u-boot-sunxi-with-spl.bin of=${mmc} bs=1024 seek=8
mount ${mmc}1 /media/usb/
cp olinux/sunxi/linux-sunxi/arch/arm/boot/uImage /media/usb/
cp olinux/sunxi/script.bin /media/usb/

If you want to do a server without graphical session, you can disable allocated ram for the graphical card. To do that copy uEnv.txt file; This file add custom kernel parameters to save 32MB of ram. If you want to use the graphical card; don't copy uEnv.txt file.

cp olinux/sunxi/uEnv.txt /media/usb/
umount /media/usb

Root partition

Copy the rootfs you previously builded with debootstrap, and add firmware and modules build with sunxi kernel.

mount ${mmc}2 /media/usb/
cp -r olinux/debootstrap/* /media/usb/
sync
chmod 1777 /media/usb/tmp/
rm -rf /media/usb/lib/firmware/
cp -rf olinux/sunxi/linux-sunxi/out/lib/firmware/ /media/usb/lib/
sync
rm -rf /media/usb/lib/modules/
cp -rf olinux/sunxi/linux-sunxi/out/lib/modules/ /media/usb/lib/
sync
umount /media/usb

Default root password is olinux. After first connection on you box run depmod to build moddep file.

ssh root@mybox
depmod -a

That's it !

TODO

change Install on a SD card to a script ?

Some links:

You probably want to Build your own docker image

Because it's quick and easy; tutorial here
Because you shoudn't trust regitry images; demonstration here

README.md