Splashscreen using psplash

Splashscreen using psplash

[Andreas Enbacka]

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Hello,

 

I am creating a custom image based on core-image-sato, with a custom splash
screen (using psplash). I have been able to replace the default yocto
splashscreen in my image,  however, my question is whether it is possible to
hide the initial console output text displayed on the screen prior to
showing the splashscreen?  Currently most of the boot process is completed
at the stage when the splash screen is being displayed on screen. This is
because the image should be used as part of an embedded device, and the
end-user should not see any traces of the underlying linux distro. 

 

Any info would be greatly appreciated.

 

Best regards,

Andreas Enbacka

 


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Re: Splashscreen using psplash

[Gary Thomas]

On 2013-04-23 06:03, Andreas Enbacka wrote:
> Hello,
>
> I am creating a custom image based on core-image-sato, with a custom splash screen (using psplash). I have been able to replace the default yocto splashscreen in my image,
>   however, my question is whether it is possible to hide the initial console output text displayed on the screen prior to showing the splashscreen?  Currently most of the boot
> process is completed at the stage when the splash screen is being displayed on screen. This is because the image should be used as part of an embedded device, and the end-user
> should not see any traces of the underlying linux distro.
>
> Any info would be greatly appreciated.

You could disable the [framebuffer] console directly in the
kernel (CONFIG_FRAMEBUFFER_CONSOLE).  With this disabled, Linux
will leave whatever was in the framebuffer (possibly a splash
put there by your bootstrap).

I've done this where U-Boot put up a splash image that was the
same as the psplash one so there was no change on the screen
during the boot process until it was completely running.

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

Re: Splashscreen using psplash

[Burton, Ross]

On 23 April 2013 13:03, Andreas Enbacka <aenbacka@gmail.com> wrote:
> I am creating a custom image based on core-image-sato, with a custom splash
> screen (using psplash). I have been able to replace the default yocto
> splashscreen in my image,  however, my question is whether it is possible to
> hide the initial console output text displayed on the screen prior to
> showing the splashscreen?  Currently most of the boot process is completed
> at the stage when the splash screen is being displayed on screen. This is
> because the image should be used as part of an embedded device, and the
> end-user should not see any traces of the underlying linux distro.

Passing "quiet" to the kernel (APPEND+="quiet" in local.conf will do
it for testing) should stop the majority of the text.  A full
splash-from-bootloader is possible if you have a bootloader that
displays the image, and then a silent kernel from there.

Ross

Re: Splashscreen using psplash

[Andreas Enbacka]

Hello,

Thanks a lot for info, I will try with that.

//Andreas

-----Original Message-----
From: Burton, Ross [mailto:ross.burton@intel.com] 
Sent: 23. huhtikuuta 2013 15:09
To: Andreas Enbacka
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Splashscreen using psplash

On 23 April 2013 13:03, Andreas Enbacka <aenbacka@gmail.com> wrote:
> I am creating a custom image based on core-image-sato, with a custom splash
> screen (using psplash). I have been able to replace the default yocto
> splashscreen in my image,  however, my question is whether it is possible to
> hide the initial console output text displayed on the screen prior to
> showing the splashscreen?  Currently most of the boot process is completed
> at the stage when the splash screen is being displayed on screen. This is
> because the image should be used as part of an embedded device, and the
> end-user should not see any traces of the underlying linux distro.

Passing "quiet" to the kernel (APPEND+="quiet" in local.conf will do
it for testing) should stop the majority of the text.  A full
splash-from-bootloader is possible if you have a bootloader that
displays the image, and then a silent kernel from there.

Ross

Re: Splashscreen using psplash

[Gary Thomas]

On 2013-04-23 06:29, Andreas Enbacka wrote:
> Hello,
>
> Thanks a lot for info, I will try with that.
>
> //Andreas
>
> -----Original Message-----
> From: Burton, Ross [mailto:ross.burton@intel.com]
> Sent: 23. huhtikuuta 2013 15:09
> To: Andreas Enbacka
> Cc: yocto@yoctoproject.org
> Subject: Re: [yocto] Splashscreen using psplash
>
> On 23 April 2013 13:03, Andreas Enbacka <aenbacka@gmail.com> wrote:
>> I am creating a custom image based on core-image-sato, with a custom splash
>> screen (using psplash). I have been able to replace the default yocto
>> splashscreen in my image,  however, my question is whether it is possible to
>> hide the initial console output text displayed on the screen prior to
>> showing the splashscreen?  Currently most of the boot process is completed
>> at the stage when the splash screen is being displayed on screen. This is
>> because the image should be used as part of an embedded device, and the
>> end-user should not see any traces of the underlying linux distro.
>
> Passing "quiet" to the kernel (APPEND+="quiet" in local.conf will do
> it for testing) should stop the majority of the text.  A full
> splash-from-bootloader is possible if you have a bootloader that
> displays the image, and then a silent kernel from there.

Note: AFAICT this will only work if booting using grub or syslinux, not U-Boot
or some other embedded bootstrap.

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

Re: Splashscreen using psplash

[Richard Purdie]

On Tue, 2013-04-23 at 06:34 -0600, Gary Thomas wrote:
> On 2013-04-23 06:29, Andreas Enbacka wrote:
> > Hello,
> >
> > Thanks a lot for info, I will try with that.
> >
> > //Andreas
> >
> > -----Original Message-----
> > From: Burton, Ross [mailto:ross.burton@intel.com]
> > Sent: 23. huhtikuuta 2013 15:09
> > To: Andreas Enbacka
> > Cc: yocto@yoctoproject.org
> > Subject: Re: [yocto] Splashscreen using psplash
> >
> > On 23 April 2013 13:03, Andreas Enbacka <aenbacka@gmail.com> wrote:
> >> I am creating a custom image based on core-image-sato, with a custom splash
> >> screen (using psplash). I have been able to replace the default yocto
> >> splashscreen in my image,  however, my question is whether it is possible to
> >> hide the initial console output text displayed on the screen prior to
> >> showing the splashscreen?  Currently most of the boot process is completed
> >> at the stage when the splash screen is being displayed on screen. This is
> >> because the image should be used as part of an embedded device, and the
> >> end-user should not see any traces of the underlying linux distro.
> >
> > Passing "quiet" to the kernel (APPEND+="quiet" in local.conf will do
> > it for testing) should stop the majority of the text.  A full
> > splash-from-bootloader is possible if you have a bootloader that
> > displays the image, and then a silent kernel from there.
> 
> Note: AFAICT this will only work if booting using grub or syslinux, not U-Boot
> or some other embedded bootstrap.

The trick is to redirect the console output somewhere else. By default
it goes to the first tty if I recall correctly but you can send it to a
serial port or wherever you want...

Cheers,

Richard

Re: Splashscreen using psplash

[Tian Wen See]

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Hello,

How do i modify the original psplash in Yocto, and how do i recompile it and reintegrate the newly compiled one into Yocto ?
Any help will be greatly appreciated.

Best Regards,
Mike See

Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10


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