U-Boot, video console, and visual artifacts
#7
There are ways to preserve the console through the boot process, U-Boot can tell the kernel about the existing frame buffer via a description in the devicetree, or if booting the kernel via EFI there's a similar protocol in EFI, but they require coordination between U-Boot and the OS, and also the OS needs to properly switch from simple or efifb to the full rockchipdrm driver when it's ready. I think I saw some patches for rockchipdrm to handle this on the linux-rockchip mailing list, which suggests it doesn't work at the moment but someone's working on it.
  Reply


Messages In This Thread
RE: U-Boot, video console, and visual artifacts - by sigmaris - 06-27-2021, 03:01 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  3 days in, slow/stuck or no boot. lgmpbp2 34 12,038 06-11-2025, 08:53 AM
Last Post: lgmpbp2
  upgrading u-boot--what version? where to get it? bsammon 14 7,075 04-03-2025, 07:47 AM
Last Post: Tazdevl
  Problem with Wifi, Sleep, Video and PGP signature Anarethos 4 1,096 03-31-2025, 07:14 AM
Last Post: Anarethos
Tongue Yet another Pinebook Pro won't boot thread pinemouth 5 5,049 12-27-2024, 11:38 AM
Last Post: akash3995
  broken tow-boot hashkeeper 1 838 12-25-2024, 10:12 PM
Last Post: jessipinkman
  Cant boot into an OS trashtendenz 3 1,676 10-23-2024, 03:49 AM
Last Post: chaylengordon
  Unable to boot? YossiS 4 1,523 09-04-2024, 10:35 AM
Last Post: wdt
  uboot wont boot to SD card after upgrade jbradley419 7 4,289 01-19-2024, 02:29 PM
Last Post: wdt
  Video Flashing/adjusting on boot and reboot jbradley419 0 1,104 01-16-2024, 09:17 AM
Last Post: jbradley419
  Video Editing Is Possible On The PineBook Pro! ImmyChan 10 12,058 12-17-2023, 09:29 PM
Last Post: insideau786

Forum Jump:


Users browsing this thread: 1 Guest(s)