Build OpenWrt
OpenWrt officially does not support the Cubieboard, however you can use this git repository with experimental support:
https://github.com/zioproto/openwrt-sunxi
Please read the instructions in this README.sunxi file:
https://github.com/zioproto/openwrt-sunxi/blob/sunxi-rebased/README.sunxi
PreBuilt Images
If you dont want to compile OpenWrt you can find some prebuilt images here:
http://stud.netgroup.uniroma2.it/~saverio/sunxi/v4/
Bootloader
You will need to compile also the bootloader. The guide to compile u-boot for cubieboard is here:
https://github.com/linux-sunxi/u-boot-sunxi/wiki
For example I compiled
make ’boardtype’ CROSS_COMPILE=arm-linux-gnueabi-
you might need to install the necessary toolchain stuff to cross compile for ARM in your system. Something like
apt-get install gcc-arm-linux-gnueabi
Prepare the microSD card
use fdisk to make two partitions the first one of 16Mb, and starting at sector 2048 (it should be the default value) the second partition can take all the rest of the SD card
format msdos the first partition: mkfs.msdos/dev/sdb1format ext4 the second partition mkfs.ext4/dev/sdb2
now you have to install the u-boot, the bootloader.
dd if=sunxi-spl.bin of=/dev/sdb bs=1024 seek=8 dd if=u-boot.bin of=/dev/sdb bs=1024 seek=32
now copy in th first partition the script.bin file and the kernel openwrt-sunxi-uImage and call the file exactly uImage
in the ext4 partition untar the tar.gz with the OpenWRT root filesystem
mount /dev/sdb1 /mnt/temp cp openwrt-sunxi-uImage /mnt/temp/uImage cp script.bin /mnt/temp/ umount /mnt/temp
Prepare files in the ext4 partition
mount /dev/sdb2 /mnt/temp cd /mnt/temp tar -zxvf /home/saverio/Dropbox/Firmware/sunxi/v4/openwrt-sunxi-cubie-rootfs.tar.gz cd ~ umount /mnt/temp
First boot
the system will not boot correctly (you will not see /proc) if you dont setinit=/etc/preinitin your uboot evironment
at the first boot press any key to stop at the bootloader, you will see something like this:
U-Boot SPL 2012.10-04280-g1a8ac55 (May 25 2013 - 19:42:12) DRAM: 1024MB SUNXI SD/MMC: 0 U-Boot 2012.10-04280-g1a8ac55 (May 25 2013 - 19:42:12) Allwinner Technology CPU: SUNXI Family Board: Cubieboard I2C: ready DRAM: 1 GiB MMC: SUNXI SD/MMC: 0 *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Hit any key to stop autoboot: 0 sun4i#
Use the commandprintenvto see your environment
sun4i#printenv baudrate=115200 boot_mmc=fatload mmc 0 0x43000000 script.bin fatload mmc 0 0x48000000 ${kernel} watchdog 0 bootm 0x48000000 bootcmd=if run loadbootenv; then echo Loaded environment from ${bootenv};env import -t ${scriptaddr} ${filesize};fi;if test -n ${uenvcmd}; then echo Running uenvcmd ...;run uenvcmd;fi;if run loadbootscr; then echo Jumping to ${bootscr};source ${scriptaddr};fi;run setargs boot_mmc; bootdelay=3 bootenv=uEnv.txt bootscr=boot.scr console=ttyS0,115200 kernel=uImage loadbootenv=fatload mmc 0 $scriptaddr ${bootenv} || ext2load mmc 0 $scriptaddr ${bootenv} || ext2load mmc 0 $scriptaddr boot/${bootenv} loadbootscr=fatload mmc 0 $scriptaddr ${bootscr} || ext2load mmc 0 $scriptaddr ${bootscr} || ext2load mmc 0 $scriptaddr boot/${bootscr} loglevel=8 panicarg=panic=10 root=/dev/mmcblk0p2 rootwait scriptaddr=0x44000000 setargs=setenv bootargs console=${console} root=${root} loglevel=${loglevel} ${panicarg} ${extraargs} stderr=serial stdin=serial stdout=serial Environment size: 1028/131068 bytes sun4i#
at this point use the commandsetenvto append theinit=/etc/preinitto the kernel boot args, see this example:
sun4i#setenv setargs setenv bootargs console=${console} root=${root} loglevel=${loglevel} ${panicarg} ${extraargs} init=/etc/preinit
Check the change withprintenvand if it looks ok you can save with saveenv
sun4i#saveenv Saving Environment to MMC... Writing to MMC(0)... done sun4i#
now to boot just typeboot. The next boots can be done automatically without these steps.
References
