Based on Arch Wiki:
- https://wiki.archlinux.org/index.php/syslinux#UEFI_Systems
- https://wiki.archlinux.org/index.php/Secure_Boot#PreLoader
I was trying to boot directly to Arch (with no boot manager menu) with UEFI and Secure Boot, systemd-boot doesn't worked because the boot partition was not with the correct UUID and formatting the disk does not appears to be a great solution (rs).
SYSLINUX worked out of the box with PreLoader!