[CentOS] how does the bootup screen move the cursor around?

While rebooting my computer after installing the new kernel a few minutes ago, I got to wondering about how the initial bootup screen (after grub, before rhgb) is constructed.

The "Loading kernel blah blah blah" lines start at the top of the screen and proceed to scroll down as one would expect.

But "kernel alive" shows up at the bottom of the screen and then more write-up is printed above it.

My question is, how does that happen? Does it write its own esc codes directly to the screen? If so, how does it know what terminal we're using and, therefore, what esc codes to send?

Further into the boot sequence something like ncurses could do the heavy lifting, but I don't think we're that far along yet.