[U-Boot] [U-Boot,v3,15/21] efi_loader: add bootmgr

[Alexander Graf]

> Similar to a "real" UEFI implementation, the bootmgr looks at the
> BootOrder and BootXXXX variables to try to find an EFI payload to load
> and boot.  This is added as a sub-command of bootefi.
> 
> The idea is that the distro bootcmd would first try loading a payload
> via the bootmgr, and then if that fails (ie. first boot or corrupted
> EFI variables) it would fallback to loading bootaa64.efi.  (Which
> would then load fallback.efi which would look for \EFI\*\boot.csv and
> populate BootOrder and BootXXXX based on what it found.)
> 
> Signed-off-by: Rob Clark <robdclark at gmail.com>

Thanks, applied to efi-next

Alex