[fedora-arm] How to add default kernel arguments?

Hi! I came up from x86 world, and found there is no grub on ARM installation, thus no file like /etc/default/grub where I could place some kernel arguments, that will be automatically attached to all newly installed kernels while updates are comming in. I've found it a great place to pass arguments like "elevator=noop". Does extlinux (which I assume is grub equivalent on ARM) support such defaults ? marcinek