Gentoo on Pinebook Pro RELEASE

[Arwen]

U-Boot & friends live here;

Code:

/dev/mmcblk1p2 : start=       64, size=    16320, name="IDBLoader"
/dev/mmcblk1p3 : start=    16384, size=     8192, name="U-Boot"
/dev/mmcblk1p4 : start=    24576, size=     8192, name="TrustedFirmware-A"

I created partition table entries for them, to make it easier to both understand the reserved space and modify one at a time..
So, any user partition table entries should start here, (256MB "/boot" partition shown);

Code:

/dev/mmcblk1p1 : start=    32768, size=   524288, name="Linux-boot"

Note the fixed number of "/boot", which is 1. I have learned that it needs both partition number 1 and FS labeled "BOOT" for the stock Debian U-Boot instance.