For Li (and Be), a standard potential and a potential that treats the shell as valence states are available (Li_sv, Be_sv). For many applications one should use the _sv potential since their transferability is much improved compared to the standard potentials.
For the other alkali and alkali-earth elements the semi-core and states should be treated as valence states as well. For lighter elements (Na-Ca) it is usually sufficient to treat the the and states, respectively, as valence states (_pv), whereas for Rb-Sr the and states, respectively, must be treated as valence states (_sv). The standard potentials are listed below (default energy cutoffs are specified as well but might vary from one release to the other):
for X_sv pseudopotentials, the semi core s states are treated as valence (1s in Li and Be, 2s in Na etc.)