[yocto] [PATCH] Fix booting from eMMC on BeagleBone Black

[Jussi Laako]

Hello,

By default, on BeagleBone, u-boot only looks for rootfs UUID from first 
mmc device and thus only from microSD. Thus booting from eMMC fails in 
kernel panic because command line has empty root partition UUID 
"root=PARTUUID=".

This patch makes it first look in the same place as before and if the 
lookup fails (no microSD inserted) it next looks up for the rootfs UUID 
on the second mmc device which is the on-board eMMC. I placed the 
bbappend and patch on meta-yocto-bsp layer because the BeagleBone 
support in general is located there.


Best regards,

	- Jussi Laako

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