[U-Boot] u-boot hangs

[Andrea Di Chiara]

Hi,
I'm working on a var-som-mx6 board with an original kernel version
3.0.35 that I have updated to a 3.14.28 version builded with Yocto
Dizzy. It seems all ok but, sometimes, after software or hardware reboot
the system hangs on u-boot. It seems some issue with environment
variables cause, when loading reaches u-boot prompt, sometimes it hangs
after executing "printenv" or some other command.

Before that problem I have seen messages like these: "*** Warning - bad
CRC, using default environment" or "## Warning: Unknown environment
variable access method '@'". What could these mean? What could be the
problem?

All those problems don't appear if I turn-off and turn-on the board by
main switch, In these cases it always load successfully and I can access
without any problem to u-boot environment variables.


thank you again for the attention
best regards
Andrea



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