I have been saying for a number of years now that bootloaders such as GRUB2, rEFit, Clover and others have no place in modern EFI-based Linux systems and that the only reason to use such a bootloader is if you are on older system where you wish to be able to boot into one of a number of operating systems.
The Linux Foundation is now a member of Unified EFI Forum (about time!) and has now got full access to the resources of that forum. As a result, kernel developer Greg Kroah-Hartman has been working on the procedures for how to boot a self-signed Linux kernel on a platform so that you do not have to rely on any external signing authority.
He has gone further than I have even gone by building a self-booting kernel which does not require an initramfs and has the kernel command line options build-in so the kernel knows where to find the root partition, etc.
The article is well worth reading if you are interested how to boot a Linux kernel with an initramfs or a bootloader.