U-Boot for the Banana Pi BPI-R3 (MediaTek MT7986), booting from the SD
card. A new mt7986 family in sysutils/u-boot-master installs BL2 from
sysutils/atf-mt7986 and a FIP with BL31 and U-Boot, made with
sysutils/fiptool.
The fragment enables the EFI loader and autoboot, which the board's
defconfig disables, and keeps the environment in the GPT partition named
"ubootenv" instead of at a fixed offset. U-Boot 2026.10 also needs
upstream commit 3ffad26f17cb for the MediaTek clocks before relocation;
without it the board resets in a loop.
Sponsored by: Alchemilla Ventures Private Limited