[SeaBIOS] how to enter into cmos-setup of seabios in qemu/kvm

[dw]

Hi:

I'm running a VM with qemu/kvm and libvirt,I want to know how to 
enter into cmos-setup of seabios.

Anyone knows how to?

Or there is not cmos-setup in seabios?

please help me.

thanks!

dw