[U-Boot] [RFC] xz compression for U-Boot images

[Heinrich Schuchardt]

Hello Tom,

in one of you recent mails you highlighted the worrisome growth of the
U-Boot images. The UEFI sub-system is just one part of it.

Are you aware off any prior efforts to prepend U-Boot with a
self-extractor?

With xz a U-Boot image can be compressed by a factor of more than 2.5.
The self-extractor would have to comprise RAM setup (if not handled by
SPL), the decompression code, and the cache reset.

Best regards

Heinrich