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September 19-21, 2023
Bilbao, Spain
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Thursday, September 21 • 12:50 - 13:30
Early Splash Screen Using U-Boot - Devarsh Thakkar & Nikhil M Jain, Texas Instruments

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Increasing number of Auto and robotic use case require enabling display as early as possible. U-boot is a widely used bootloader which supports large number of SoC's and provides a framework for writing video drivers and displaying images while device boots up. This talk will cover how one can add support for a new video driver in u-boot and enable display during bootup. Display controller basics and u-boot boot flow will be covered briefly, before moving into details on how to write a new video class driver using U-boot's Video Class framework and how to display images from different boot media at U-boot prompt or during bootup. It will then cover details regarding enabling early splash screen for displaying image at U-boot's SPL binary and ensuring flicker free experience during hand-off to further bootloader binaries and Linux kernel. Different design considerations related to storage media, memory addressing, and hand-off will be covered to give an idea to user on platform specific changes that need to be done to support early display using U-boot.
Speakers
avatar for Devarsh Thakkar

Devarsh Thakkar

Software Engineer, Devarsh Thakkar
Devarsh Thakkar works as an Embedded Linux developer at Texas Instruments. He has worked on linux bootloaders, device drivers and multimedia frameworks such as Gstreamer since 2014. He has open source contributions in Linux kernel, Gstreamer and Yocto projects.
avatar for Nikhil M Jain

Nikhil M Jain

Software Intern, Texas Instruments
Nikhil M Jain works as an embedded software intern at Texas Instruments. He has been working enabling early display for TI SoC's and has also made contributions to U-boot open source project.

Early Splash Screen using Uboot OSS2023 21sept pdf
Thursday September 21, 2023 12:50 - 13:30 CEST
Room 0B (Floor 0)
  LinuxCon
  • Presentation Slides Attached Yes