AR_IMR_S2_GTT
mask2 |= AR_IMR_S2_GTT | AR_IMR_S2_CST;
AR_IMR_S2_TSFOOR | AR_IMR_S2_GTT | AR_IMR_S2_CST);
AR_SETBITS(sc, AR_IMR_S2, AR_IMR_S2_GTT);