Gummiboot is a simple UEFI bootloader which executes EFI images. In contrast to other bootloaders like grub, gummiboot requires all configuration files, kernels, and initramfs to reside on the ESP; and kernels need to be built with CONFIG_EFI_STUB.

Using gummiboot, multiple installations of Linux can share a single boot loader.

This package takes care of creating the configuration files and copying the kernels to the ESP partition. It requires a mounted efivarfs for proper functionality.