This is an installation of kexecboot for the Pandora.
This package is broken at the moment. The bootmenu appears but it crashes on booting any entry.
kexecboot is a "soft" bootloader for Linux. It starts a small system on an initramfs that scans all partitions for known kernels and boot.cfg files and presents a boot menu.
I included an option in the "System" menu to launch a shell for debugging purposes.
It is intended to ease system booting for OSes from SD-card. It allows to select different options for the same kernel (like regular start or recovery) and/or use different installed kernels from the same partition without editing "boot.txt" each time.
The tar archive must be extracted to the root of partiton on an SD-card with a filesystem that U-boot can handle (ext2, ext3 or vfat).
If it is not installed on the first partiton or the filesystem is not "vfat" the included "/autoboot.txt" must be modified. Update "root=/dev/mmcblk0p1" to point to the right partition (actually I don't know if this is really necessary) and replace "fatload" with "ext2load" if the filesystem where you installed it is either "ext2" or "ext3".