Suppress all boot output (framebuffer?) - embedded linux distro
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Subject: Re: Suppress all boot output (framebuffer?) - embedded linux
distro
Date: Tue, 19 Feb 2013 22:52:25 +0100
From: Ivan Nikolaev <[email protected]>
To: Mulyadi Santosa <[email protected]>
Quoted 12 lines · Mulyadi Santosa
Quoted 9 lines · Ivan Nikolaev
I'm developing an ubuntu 12.04 (LTS) based embedded distribution, which basically is a normal ubuntu stripped down to bare minimal packages, which runs a minimal XOrg server with one single full-screen application. What I want is to suppress every single char of console output since the bootloader passed control to the kernel, and possibly show instead of that some static text and/or image. What I thought is to try to disable printk-s and to write some kind of patch which uses the framebuffer to show the logo. Is that possible/difficult? Can you eventually explain where I should dig?
Quoted 4 lines
IIRC, isn't that what ubuntu 12.04 does during boot stage by default ? i mean, no boot message shown....
Yes, I guess Ubuntu version of GRUB is slightly modified, and it uses Plymouth to provide that "nice" (and buggy on some machines) graphic bootsplash. What I need is to avoid virtual consoles at all, also, I need one static image visualized by framebuffer, which then smoothly passes to my GUI app. Even more, being my app Qt based, I think about throwing away the Xorg server and use Qt's support for framebuffer. So, it will probably do a nice job. Hope I've explained what I need. For example, on Android devices how this thing is done? You turn on the device, and then the loading animation is displayed for a while. Everything goes smooth, no glitches, and I suppose, there's no Plymouth :)
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