PCCV_ZS
zs_config(zsc, &zs, PCC_VECBASE + PCCV_ZS, PCLK_147);
pccintr_establish(PCCV_ZS, zshard_shared, zs_level, zsc, NULL);
zs_write_reg(zsc->zsc_cs[0], 2, PCC_VECBASE + PCCV_ZS);