Rockpi4/dev/Debian

2018-12-11T23:59:01Z

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[[rockpi4 | ROCK Pi 4]] > [[rockpi4/dev | Development]] > [[rockpi4/dev/Debian | Build Debian]]

= Rockchip Debian SDK =

Below is the instructions of how to build image for ROCK Pi 4.

== Get the source code ==

You need Git to get multiple git repositories to build the image.

Install Git if you don't have it.

sudo apt-get update
sudo apt-get install git

Clone the source code

git clone --recursive https://github.com/radxa/rockchip-bsp.git

You will get

build kernel README.md rkbin rootfs u-boot

Directories usage introductions:

* build:
** Some script files and configuration files for building u-boot, kernel and rootfs.
* kernel:
** kernel source code, current version is 4.4
* rkbin:
** Prebuilt Rockchip binaries, include first stage loader and ATF(Arm Trustzone Firmware).
* rootfs:
** Bootstrap a Debian based rootfs, support architechture armhf and arm64, support Debian Jessie and Stretch.
* u-boot:
** u-boot as the second stage bootloader

== Install toolchain and other build tools ==

sudo apt-get install gcc-aarch64-linux-gnu device-tree-compiler libncurses5 libncurses5-dev build-essential libssl-dev mtools
sudo apt-get install bc python dosfstools

== Build u-boot ==

./build/mk-uboot.sh rockpi4b #For ROCK Pi 4 Mode B

The generated images will be copied to out/u-boot folder

ls out/u-boot/
idbloader.img rk3399_loader_v1.12.112.bin trust.img uboot.img

== Build kernel ==
Build kernel with default '''rockchip_linux_defconfig'''

./build/mk-kernel.sh rockpi4b #For ROCK Pi 4 Mode B

=== Change kernel config(optional)===

Optionally, if you want to change the default kernel config

cd kernel
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
make rockchip_linux_defconfig
make menuconfig
cd ..
./build/mk-kernel.sh rockpi4b #For ROCK Pi 4 Mode B

You will get the kernel image and dtb file

ls out/kernel/
Image rockpi-4b-linux.dtb

== Make rootfs image ==

To build 32bit rootfs:

export ARCH=armhf

To build 64bit rootfs:

export ARCH=arm64

Building a base debian system by ubuntu-build-service from linaro.

cd rootfs
sudo apt-get install binfmt-support qemu-user-static cpio gdisk
sudo dpkg -i ubuntu-build-service/packages/* # ignore the broken dependencies, we will fix it next step
sudo apt-get install -f
RELEASE=stretch TARGET=desktop ARCH=$ARCH ./mk-base-debian.sh

This will bootstrap a Debian stretch image, you will get a rootfs tarball named '''linaro-stretch-alip-xxxx.tar.gz'''.

Building the rk-debain rootfs with debug:

VERSION=debug ARCH=$ARCH ./mk-rootfs-stretch.sh && ./mk-image.sh

This will install Rockchip specified packages and hooks on the standard Debian rootfs and generate an ext4 format rootfs image at '''rootfs/linaro-rootfs.img'''.

== Combine everything into one image ==

build/mk-image.sh -c rk3399 -t system -r rootfs/linaro-rootfs.img

This will combine u-boot, kernel and rootfs into one image and generate GPT partition table. Output is

out/system.img

== Flash the image ==

For normal users, follow instructions [[Rockpi4/install | here]]. You will need the generated '''out/system.img''' only.

For developers, flash from USB OTG port, follow instructions [[Rockpi4/dev/usb-install |here]]. You will need the flash helper '''rk3399_loader_xxx.bin''' and generated '''out/system.img''' files.

== Troubleshooting ==

Check [[Rockpi4/FAQs |ROCK Pi 4 FAQs]] first, if it doesn't help, start a new post on the forum https://forum.radxa.com/c/dev

Radxa Wiki - User contributions [en]

Rockpi4/dev/Debian