Problems with hardware clock on my ThinkPad T420 after flashing Coreboot

After flashing coreboot I get the wrong date on my linux install.

# date
Mon 21 Mar 2089 04:03:42 AM UTC

And when I try to read the date with hwclock I get this error

# hwclock -r
hwclock: ioctl(RTC_RD_TIME) to /dev/rtc0 to read the time failed: Invalid argument

Here's the output of dmesg Could this be caused by a dying/dead CMOS battery ? Thanks in advance! PD: If I boot coreinfo I see what it seems to be an invalid date on the bottom right (71/131/1983 - 52:16:58).