I just discovered, that I get wrong information for the cpu-arch on a board with a rasperrby pi compute module 3+ (Broadcom BCM2837B0, Cortex-A53 (ARMv8) 64-bit SoC @ 1.2GHz)

# lscpu
Architecture:        armv7l
...

# cat /proc/cpuinfo
processor   : 0
model name  : ARMv7 Processor rev 4 (v7l)

I think I messed this up when migrating an old image from CM1 to CM3.
lscpu seems to just look into the FS to get the CPU-arch.
So I wonder if there is a way to realiably get the CPU-arch directly from the CPU?