how to disable psplash screen in yocto - linux

Question

i am struggeling since couple of hours to disable the psplash image in yocto to produce an image for raspberry pi.
I created a bbappend file to remove the splash files, but only the splash.sh was removed correctly, the result like psplash_write is still kept at /usr/bin
The yocto docu states to disable it we need to pass psplash = false to the kernel command line, but how can i pass it .
your help is appreciated, thank you

Answer 1

To disable psplash, reliably, you have to remove "splash" (not psplash) from IMAGE_FEATURES. I was able to remove the psplash on Raspberry Pi 4 and Xavier NX by adding below to my local.conf
IMAGE_FEATURES_remove += "splash"
More reading on this here https://www.yoctoproject.org/docs/1.8/ref-manual/ref-manual.html#ref-features-image

Answer 2

You need to modify your image and add:
IMAGE_FEATURE_remove = "psplash"
It will remove psplash from the default IMAGE_FEATURE variable.

Answer 3

i found the solution for raspberrypi, in case somebody searches in future
inside meta-raspberrypi/recipes-bsp/rpi-u-boot-scr/files/boot.cmd
there is one line to be added before the last line as follows:
setenv bootargs psplash=false
the full file is as follows:
fdt addr ${fdt_addr} && fdt get value bootargs /chosen bootargs
fatload mmc 0:1 ${kernel_addr_r} uImage
setenv bootargs psplash=false
bootm ${kernel_addr_r} - ${fdt_addr}
-> there is no need to add any psplash recipies, but there is a drawback, i get in the log umount: can't unmount /mnt/.psplash: Invalid argument, which is another problem from the psplash.sh script.
This error comes from the following patch :enter link description here
this error comes from existance of /usr/bin/psplash-write by removing it manually, the error vanish, but removing it with a recipe edit was not sucessful