Buildroot on imx8 Dev Board

Dec 1, 2019

Table of Content

0. Building System OS

Ubuntu 18.04.3 LTS

1. Update build Environment

$ sudo apt-get install git build-essential curl chrpath gawk texinfo libncurses5-dev

2. Clone buildroot repo

$ git clone git://git.buildroot.net/buildroot

or

$ git clone https://git.buildroot.net/buildroot

3. Build

3.1 Build for i.MX 8QuadXPlus MEK CPU Board

$ cd buildroot

# Add ccache and download dir to config file 
$ cat configs/freescale_imx8qxpmek_defconfig 
BR2_CCACHE=y
BR2_CCACHE_DIR="/opt/buildroot/ccache"
BR2_DL_DIR="/opt/buildroot/dl"

BR2_aarch64=y
BR2_cortex_a35=y
BR2_ARM_FPU_VFPV3=y
......

$ make freescale_imx8qxpmek_defconfig
$ make

//Rebuild one package - make <package>-dirclean, such as:
$ make qt5base-dirclean
$ make

4. Custom Build

4.1 Custom kernel

//configure linux kernel
$ cd buildroot
$ make linux-menuconfig
$ make

//todo for imx7 qemu build & run

1. CONFIG_IMX_SDMA=y => n
2.
CONFIG_CFG80211=y		n
CONFIG_CFG80211_WEXT=y	n

4. Flash bin

4.1 Flash image to SD card

$ dd if=output/images/sdcard.img of=/dev/<your-sd-device>

########################################################
To determine the device associated to the SD card have a look in the
/proc/partitions file:
$ cat /proc/partitions

5. Run examples

5.1 Run Opengl example

//todo

5.2 Run Qt example

//todo

6. Build & Run ARM Linux on Qemu

6.1 qemu arm versatile

$ make qemu_arm_versatile_defconfig
$ make menuconfig
//Add OpenSSL libraries by navigating to Target packages -> Networking applications, and select openssh:

$ make 

//run with QEMU with this command line:

$ qemu-system-arm \
  -M versatilepb \
  -kernel output/images/zImage \
  -dtb output/images/versatile-pb.dtb \
  -drive file=output/images/rootfs.ext2,if=scsi,format=raw \
  -append "root=/dev/sda console=ttyAMA0,115200" \
  -serial stdio \
  -net nic,model=rtl8139 -net user \
  -redir tcp:2222::22 \
  -name Versatile_ARM_EXT2

6.2 Qemu arm imx6ul

$ cd buildroot
$ git checkout 2020.02.x
$ make imx6ulevk_defconfig
$ make j8

99. Reference URL