TPM_STS_CMD_READY
bus_space_write_1(sc->sc_bt, sc->sc_bh, TPM_STS, TPM_STS_CMD_READY);
if (sc->sc_stat & TPM_STS_CMD_READY) {
bus_space_write_1(sc->sc_bt, sc->sc_bh, TPM_STS, TPM_STS_CMD_READY);
if ((rv = tpm_waitfor(sc, TPM_STS_CMD_READY, TPM_READY_TMO,
TPM_STS_CMD_READY);
err ? TPM_STS_CMD_READY : TPM_STS_GO);