I will complete this chapter with a look at another bootloader that has the same roots as U-Boot but takes a new approach to bootloaders. It is derived from U-Boot and was actually called U-Boot v2 in the early days. The barebox developers aimed to combine the best parts of U-Boot and Linux, including a POSIX-like API and mountable filesystems.
The barebox project website is http://barebox.org/ and the developer mailing list is [email protected].