Firmware Memory Console

modulename: memconsole-coreboot.ko

configname: CONFIG_GOOGLE_MEMCONSOLE_COREBOOT

Linux Kernel Configuration
└─>Device Drivers
└─>Firmware Drivers
└─>Google Firmware Drivers
└─>Firmware Memory Console
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option enables the kernel to search for a firmware log in
the coreboot table. If found, this log is exported to userland
in the file /sys/firmware/log.

source code: