A good tutorial for compiling uboot.ext?


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9 hours ago, Bozza said:

Hello everybody is there a good tutorial to compile u-boot.ext?

Or are there perhaps any quality sources that already have u-boot.ext files?

 

Thank you

What is u-boot.ext ?!?

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i think this was due to amlogic messing up the video mode with current mainline kernels in later versions of their legacy u-boot - the solution was to chainload a u-boot which sets the video mode properly (no more false colors) from the legacy u-boot on the box ...

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i do not know any details, i just know that is why the u-boot.ext was there ... maybe just give a mainline c4 u-boot a try and chainload that? i would not recommend to touch the legacy u-boot on the box as long as you do not know 100% what you are doing (maybe you do know 100%) as its very easy to brick a box this way due to wrong memory timings

 

best wishes - hexdump

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Maybe these helps as a start:

 

https://gitlab.com/baylibre/amlogic/atv/u-boot/-/wikis/home
https://u-boot.readthedocs.io/en/latest/board/amlogic/sei610.html

 

But it looks like the u-boot.ext Balbes uses is one without de binaries from Amlogic, since he is chaining his bootloader after the boards own u-boot, so memory initialization and soc initialization is already done.

Edited by Devmfc
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