I need a splash screen solution for an embedded product based on a Raspberry Pi 5 Compute module with eMMC. The product runs vanilla Bookworm Lite 64 bit.
Requirements:
The boot screen must appear within 5 seconds (preferably less) of initial power on. The boot screen shall be at least a static image. A progress bar would be nice but not necessary. I will provide the PNG asset that has the native resolution of the display (no scaling required). The boot screen must stay on the screen until my LVGL application (started by systemd) starts. No significant screen blanking (max 1 sec) between the splash and the LVGL App starting. The LVGL app starts very quickly and the UI is presented in a fraction of a second after starting it manually. All console output must be suppressed. The environment is Bookworm Lite and framebuffer only. Display used is standard Raspberry Pi Touch Display 2. It must work with this display, a proof of concept using HDMI etc is not acceptable. A lightweight solution using open source solutions (e.g. Plymouth, fbi etc). No legacy solutions. Must appear quickly after power up so requires an initramfs solution (not systemd etc) Lightweight - something that can be tested manually and then integrated using rpi-image-gen
Supply all scripts so I can confirm integration on the platform. You can use a Raspberry Pi 5 or a CM5 on the Raspberry I/O board (which will give more representative speeds as the eMMC is faster than an SD card). You must test it with the Touch Display 2 and standard RPi display driver.
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