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Kernel logo doesn't appear

Merlino
Associate II

Good morning, everyone,
I am working on a board that mounts STM32FMP25x, with Yocto, and I am having problems with the kernel logo.
I've enabled and customized the pslash-drm image and that works (it would be curious to understand why it has to be 1 px narrower and 1 px shorter than the screen resolution but that's another task).
Problem: the boot is really slow and I need something to appear on the screen before the 20'' needed for the psplash-drm to appear.
I am not a great expert, but from what I remember of Yocto, and the Linux kernel, it should also be possible to make a kernel logo appear (so I have done with all the platforms I have worked on in the past).
In the .config of my kernel the CONFIG_LOGO_LINUX_CLUT224=y entry is set correctly, but unfortunately I don't see anything on the screen.
I do not understand if and what I am doing wrong.

I have not customized the image yet so the problem should not be about the image format.
Do you have any advice?
I thank you very much in advance.

 

4 REPLIES 4
Merlino
Associate II

not many answers :')

PatrickF
ST Employee

Hi @Merlino 

have you tried to use uBoot splash screen ?
https://community.st.com/t5/stm32-mpus-products/u-boot-splash-screen/m-p/591418

 

Regards.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
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I guess they are two different things...

I'll also try to add u-boot splash screen (hoping i can set a custom size image) but my question is about kernel splash screen.

Maybe this post ?

https://community.st.com/t5/stm32-mpus-products/modify-kernel-splash-screen-image-psplash-drm/m-p/72473

 

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
Tip of the day: Try Sidekick STM32 AI agent, see here