Bootloader Splash Screen

[Maninder Singh]

Hi All,
        I have a query.When we power on an android phone say a Samsung smartphone running the bootloader sboot , the bootloader image i.e the splash screen displaying the model number like GT-N7100(Galaxy Note 2) is seen.Till now the kernel has not started yet.After that the screen dims a bit and then the kernel starts.This splash screen is nothing but a ".jpg" image which can be found inside the bootloader code i guess.But my question is how this image gets copied to the frame buffer.This image gets copied to the kernel.But how??..Moreover suppose the phone has finished booting up and home screen is displayed,Now if I want that image how can i access it,Suppose i want to display that splash screen image again.How can i access it now from kernel space..

[Jeremy Morales]

You are looking to do a rle image

http://forum.xda-developers.com/showthread.php?t=1140406

On Tue, Dec 3, 2013 at 11:56 AM, Maninder Singh <muni...@gmail.com> wrote:

Hi All,
        I have a query.When we power on an android phone say a Samsung smartphone running the bootloader sboot , the bootloader image i.e the splash screen displaying the model number like GT-N7100(Galaxy Note 2) is seen.Till now the kernel has not started yet.After that the screen dims a bit and then the kernel starts.This splash screen is nothing but a ".jpg" image which can be found inside the bootloader code i guess.But my question is how this image gets copied to the frame buffer.This image gets copied to the kernel.But how??..Moreover suppose the phone has finished booting up and home screen is displayed,Now if I want that image how can i access it,Suppose i want to display that splash screen image again.How can i access it now from kernel space..

--
--
unsubscribe: android-kerne...@googlegroups.com
website: http://groups.google.com/group/android-kernel
---
You received this message because you are subscribed to the Google Groups "Android Linux Kernel Development" group.
To unsubscribe from this group and stop receiving emails from it, send an email to android-kerne...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.

[Rohit Kumar]

Hi Maninder,

If I understand your concern correctly you want to show same image coming from Bootloader to continue to kernel. The best way of doing it is skip the panel reset code. When the kernel starts it reset display pipelines. Don't reset it and your splash screen will continue till android fw. 

In otherwords you can skip the initialization of your display subsystem where it resets the DSs in kernel driver.