SMC_L2_DBG
platform_smc_write(sc->sc_iot, sc->sc_ioh, L2C_DEBUG_CTL, SMC_L2_DBG, 3);
platform_smc_write(sc->sc_iot, sc->sc_ioh, L2C_DEBUG_CTL, SMC_L2_DBG, 0);
platform_smc_write(sc->sc_iot, sc->sc_ioh, L2C_DEBUG_CTL, SMC_L2_DBG, 3);
platform_smc_write(sc->sc_iot, sc->sc_ioh, L2C_DEBUG_CTL, SMC_L2_DBG, 0);