How to make a update.img booting from Nand or other media

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   a marsboard RK3066 or marsboard PX2
   a desktop/laptop running Linux(64bit preferred)
   a micro usb cable, one side plugged in to the OTG port of marsboard, the other side plugged in to the usb port on desktop/laptop

Prepare the build environment

Install the packages for the compiler

Install packages for building kernel if you don't have them on your host.

  sudo apt-get install build-essential lzop libncurses5-dev libssl-dev

Install the toolchain

Download ARM toolchain if you don't have Android 4.2.2/4.4.2 SDK on your host.

if your host is 64bit

  git clone -b kitkat-release --depth 1


 download the zip file here 

if your host is 32bit

  git clone -b jb-release --depth 1


  download the zip file here h

you can use any toolchain if you are sure it works, or you can fix any error introduced by toolchain.

Get the source code


Build the kernel

  cd marsboard-linux-rockchip

if you want to use HDMI display, you can use this linux config

  make ARCH=arm marsboard_rk3066_px2_hdmi_defconfig

if you want to use LCD display, the marsboard RK3006 & PX2 support two types of LCD module, HY070CTP-A (800x480) or HY070CTP-HD (1024x600).

  make ARCH=arm marsboard_rk3066_px2_hy070ctp_a_defconfig
  make ARCH=arm marsboard_rk3066_px2_hy070ctp_hd_defconfig

Compile the kernel

  make ARCH=arm CROSS_COMPILE=`pwd`/arm-eabi-4.6/bin/arm-eabi- kernel.img -j8

The kernel will be at kernel.img (image for kernel partition) and arch/arm/boot/Image (raw binary)

if you want LZO compressed kernel, specify zkernel.img

  make ARCH=arm CROSS_COMPILE=`pwd`/arm-eabi-4.6/bin/arm-eabi- zkernel.img -j8

The kernel will be at kernel.img (image for kernel partition) and arch/arm/boot/zImage (compressed binary)

Generate the image

Generate the initramfs

  cd ..
  make -C initrd

Generate the boot.img

Install mkbootimg

  git clone
  cd rockchip-mkbootimg
  sudo make install
  cd ..

Make boot.img

  mkbootimg --kernel marsboard-linux-rockchip/arch/arm/boot/Image --ramdisk initrd.img -o boot.img

Done. Now we have the boot.img (image for boot/recovery partition) for marsboard.

Pack to update.img

 git clone

copy boot.img to rockchip-pack-tools

 mv boot.img /path/rockchip-pack-tools/linux/linux-boot.img

copy rootfs.img to rockchip-pack-tools

 mv rootfs.img /path/rockchip-pack-tools/linux/linux-rootfs.img

Generate the image

./    # Pack the image

then you get a updata.img, how to upload it? use Linux Upgrade Tool.

Boot from Media

Modify the parameter

The linux rootfs maybe in the different partition or media(nand or uSD card or USB disk), so you need to tell the kernel which is the right rootfs to mount. So change the root= command line in your parameter to the rootfs you want to mount. The examples are:

 root=/dev/mtdblock2          # rootfs in the nand partition block2
 root=/dev/mmcblk0p1          # rootfs in the uSD card first partition
 root=/dev/sda1               # rootfs in the U disk or the USB hard drive first partition
 root=LABEL=linuxroot         # rootfs in the partition with label "linuxroot", can be in uSD, U disk or USB hard drive.

Boot from nand

 cd /path/rockchip-pack-tools
 vi parameter
 CMDLINE:console=ttyFIQ0,115200 console=tty2 root=/dev/mtdblock2 init=/sbin/init initrd=0x62000000,0x00800000

Boot from sd card

 cd /path/rockchip-pack-tools
 vi parameter
 CMDLINE:console=ttyFIQ0,115200 console=tty2 root=LABEL=linuxroot init=/sbin/init initrd=0x62000000,0x00800000

Next step

Now you refer flash the image to flash the generated boot.img to "boot" partition parameter to "parameter" partition of your marsboard. And download a prebuilt rootfs or make your own rootfs. You will get linux system boot into ramdisk and then switch root to real rootfs.

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