In message 46D34AF4.3030808@freescale.com you wrote:
If you had a look at the code, you should notice that all relevant parts of the code are between "#ifndef __U_BOOT__" ... "#endif" pairs.
In other words, this is not available in U-Boot.
Why is there U-Boot code that is not available in U-Boot?
It's not U-Bot code, it's hush code. We "imported" the hus shell from BusyBox, and to keep it in sync with any changes or improvements done in BusyBox' version it is a Good Idea (TM) to change the file only to the minimum extend needed to make it work.
(and for the record, I did look at the code and I did notice that, and I found that #ifdef so odd I figured I'd better ask).
It's not odd at all. Actually it's even kind of documented as item 2 of the Coding Style document: "Source files originating from different projects (for example the MTD subsystem or the hush shell code from the BusyBox project) may, after careful consideration, be exempted from these rules. For such files, the original coding style may be kept to ease subsequent migration to newer versions of those sources."
Best regards,
Wolfgang Denk