[U-Boot] Very confusing variable=name behaviour

Pavel Machek pavel at denx.de
Sat Dec 12 21:53:57 CET 2015


Hi!

I'm getting quite crazy behaviour of variables in recent u-boot:

VERSION = 2016
PATCHLEVEL = 01
SUBLEVEL =
EXTRAVERSION = -rc1


Bytes transferred = 104656 (198d0 hex)
=> bootm_boot_mode=nonsec
=> echo $bootm_boot_mode
nonsec
=> prinetenv bootm_boot_mode
Unknown command 'prinetenv' - try 'help'
=> printenv bootm_boot_mode
## Error: "bootm_boot_mode" not defined
=> echo $bootm_boot_mode
nonsec
=>

What is going on there? C-level  "getenv" fails on such variable, too.

bootm_boot_mode = '<NULL>'

Explicit setenv behaves as expected:

=> setenv bootm_boot_mode nonsec
=> echo $bootm_boot_mode
nonsec
=> printenv bootm_boot_mode
bootm_boot_mode=nonsec
=>

Best regards,

     	      	 			       	       		 Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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