zs_ioasic_cnattach
zs_ioasic_cnattach(0x1a0000000, 0x00100000, 1);
zs_ioasic_cnattach(0x1e0000000, 0x00180000, 1);
zs_ioasic_cnattach(ioasic_base, 0x180000, 1);
zs_ioasic_cnattach(ioasic_base, 0x180000, 1);
zs_ioasic_cnattach(ioasic_base, 0x100000, 1);
extern void zs_ioasic_cnattach(tc_addr_t, tc_offset_t, int);