Check ECC RAM working

[ghost]

How is it possible to check wether ECC is active and working?

Usually one can use:

dmidecode --type memory

but this gives:

Scanning /dev/mem for entry point.
No SMBIOS nor DMI entry point found, sorry.

Another method would be:

edac-utils

this gives:

edac-util: Fatal: Unable to get EDAC data: Unable to find EDAC data in sysfs

[g-provost]

ECC feature is initialize by U-Boot and handled silently from Linux perspective.

You should see at U-Boot startup that the ECC feature is enabled.