These are the armhfp images for CentOS 7 release.
Consider reading https://wiki.centos.org/SpecialInterestGroup/AltArch/armhfp to understand how to use those images, as (except for RaspberryPi 2, 3, 3B+, 4 models) you'll need to correctly setup uboot (described in the wiki page) or your board will *not* boot