L2C_CTL
if (bus_space_read_4(sc->sc_iot, sc->sc_ioh, L2C_CTL))
platform_smc_write(sc->sc_iot, sc->sc_ioh, L2C_CTL, SMC_L2_CTL,
platform_smc_write(sc->sc_iot, sc->sc_ioh, L2C_CTL, SMC_L2_CTL, 0);