TS-7840 ECC
From embeddedTS Manuals
This board includes 5 onboard ram chips. Of these, 4 provide the 2GB of usable RAM for the OS, and the additional chip provides storage for ECC. ECC is always enabled on this system.
The CPU is capable of autocorrecting single bit failures, and detecting double bit failures. The mvebu_edac driver will report any failures to the kernel log. In the case of a single bit failure:
EDAC MC0: 1 CE MVEBU on mc#0csrow#0channel#0 (csrow:0 channel:0 page:0xc8e offset:0xc8e000 grain:8 syndrome:0x5b99e5 - Single bit ECC Failure)
A double bit failure will print out this message, and also attempt a system reboot.
EDAC MC0: 1 UE MVEBU on mc#0csrow#0channel#0 (csrow:0 channel:0 page:0x8e offset:0x8e000 grain:8 - Double bit ECC Failure)
To have the system not reboot in case of a double bit failure and just report change the kernel cmdline to include "mvebu_edac.edac_reboot_on_fail=0".