How to run gui_guider example application during very early boot on IMX93

[Nobita]

Hi Sir,

   I have make an IMX93 fastboot-image following the doc: https://www.nxp.com/docs/en/application-note/AN14093.pdf

I am now able to achieve a result close to what is described in the documentation, where I start the kernel init process very early. My current issue is how to start the gui_guider example project as early as possible during the boot process. Currently, my gui_guider is already integrated into the flashed image, and I can manually enter the gui_guider command to start it and see the image display. However, when I start it using systemd, the image does not appear, even though I have specified for it to start after Weston. Below is my systemd configuration:

[Unit]
Description=Start GUI Guider after Weston
After=weston.service
Wants=weston.service

[Service]
ExecStart=/usr/bin/gui_guider
User=root
Group=root
WorkingDirectory=/home/weston
Restart=always
StandardOutput=tty
StandardError=tty
Environment=WAYLAND_DISPLAY=/run/wayland-0
TimeoutStartSec=10s

[Install]
WantedBy=multi-user.target

I have also heard that you have already implemented running gui_guider / lvgl very early in the boot process within the fastboot image. Could you share the detailed technical solution for that?

Sincerely!

[Zhiming_Liu]

Hi @Nobita 

The bootup of lvgl demo is controlled by init script in /etc/init.d, the command to start lvgl is 
/home/root/lvgl_demo & in this script.

Best Regards

Zhiming

[Nobita]

Hi @Zhiming_Liu ,

    Here is my gui-guider sample code which is generated by Gui Guider-1.8.1-GA, I intergrated it into imx-yocto-bsp 6.1.36 build, My issue is that my program can display picture via the HDMI interface when I manually run the gui-guider command in a serial session, but it doesn’t show img when I set it to start automatically using init.d or systemd. Is it necessary to set environment variables or make other adjustments? would you please share your full init.d file or systemd file?

Sincerely 

[Zhiming_Liu]

Hello,

Have shared project with message.

Best Regards,
Zhiming

[Zhiming_Liu]

Hello,

Could you share the detailed technical solution for that?

--> I am checking this with internal team and will reply here asap.

Best Regards,
Zhiming