no specific kernel, just busybox init
similar to the bb-init, but now with rust (did not compile due to musl and glibc has a kernel problem)
basic busybox, but now using grub for netboot with a very fat kernel
same, but on 2025.11.2
direct kernel boot with the same kernel as above, but without grub and still a fat kernel
all modules: BR2_TARGET_GRUB2_BUILTIN_MODULES_EFI="time at_keyboard efinet net tftp boot configfile loadenv linux echo chain gzio efi_uga efi_gop fat ext2 normal loadbios video_fb videotest font gfxterm memdisk tar tftp reboot all_video acpi affs afs afsplitter ahci all_video aout archelp ata at_keyboard backtrace bfs bitmap bitmap_scale bli boot bsd btrfs bufio cat cbfs cbls chain cmp configfile cpio_be cpio cpuid crc64 cryptodisk crypto cs5536 datehook date datetime diskfilter disk div echo efifwsetup efi_gop efinet efitextmode efi_uga ehci elf eval exfat exfctest ext2 extcmd f2fs fat file fixvideo font fshelp gettext gfxmenu gfxterm_background gfxterm_menu gfxterm gptsync gzio hashsum hdparm hello help hexdump http iorw iso9660 jfs jpeg json keylayouts keystatus ldm legacycfg linux loadbios loadenv loopback lsacpi ls lspci lssal luks2 luks lvm lzopio macbless macho memdisk memrw minix_be minix mmap morse mpi msdospart multiboot2 multiboot nativedisk net newc nilfs2 normal ntfscomp ntfs odc offsetio ohci part_gpt part_msdos part_plan part_sun part_sunpc parttool password password_pbkdf2 pata pbkdf2 pgp plainmount png priority_queue probe procfs progress random rdmsr read reboot regexp reiserfs relocator romfs scsi search_fs_file search_fs_uuid search_label search serial setjmp setpci sfs sleep smbios spkmodem squash4 syslinuxcfg tar terminal terminfo test tftp time tr true udf ufs1_be ufs1 ufs2 uhci usb_keyboard usb usbms usbserial_common usbserial_ftdi usbserial_pl2303 usbtest video_cirrus video_colors video_fb videoinfo video wrmsr xfs xnu xnu_uuid xzio zfscrypt zfsinfo zfs zstd"
default set: BR2_TARGET_GRUB2_BUILTIN_MODULES_EFI="boot linux ext2 fat squash4 part_msdos part_gpt normal efi_gop"