On Wed, 16 Sep 2020 08:22:52 -0700 (PDT), in
gmane.comp.hardware.beagleboard.user Mark Mitchell
<[email protected]> wrote:
>Is there a guide to show how to set up the uEnv.txt file and any others to
>use Uboot to load the device trees? I dont quite understand how or what
>cape universal is doing or when to use it or not.
>
This relies upon the version of u-boot being used also... (which is why
it was suggested that you blank the eMMC, so there is no boot attempt from
it -- I prefer to flash the eMMC with a modern image)
Old BBB (Debian Wheezy era, maybe early Jessie) have a u-boot in the
eMMC that assumes the kernel will load device trees. Updating the eMMC with
a modern image should install a u-boot that does device tree loading. Note
that newer u-boot also detect the uSD card, and transition to it
automatically (so, booting from eMMC u-boot to uSD card device tree [I
believe] followed by uSD kernel) -- no need to hold down the boot-select to
get it to boot from uSD.
If you have the old u-boot in eMMC, you MUST use the boot-select button
to force it to load u-boot from the uSD card instead.
--
Dennis L Bieber
--
For more options, visit http://beagleboard.org/discuss
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