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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.

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.