check physical processors in a system (S7-2)

We are running a sparc S7-2 and I try to check the installed CPUs (in our case 2).

(control domain) $ psrinfo -p

1

(ldom) $ psrinfo -p

2

Why does the control domain only show 1?

According to the man-page of psrinfo -p it should show the physical CPUs in a system.

(control domain) $ psrinfo -t

socket: 0

  core: 0

    cpus: 0-7

(ldom) $ psrinfo -t

socket: 0

  core: 0

    cpus: 0-7

socket: 1

  core: 1

    cpus: 8-15