EMLXS_MBOX_CV
cv_broadcast(&EMLXS_MBOX_CV);
cv_wait(&EMLXS_MBOX_CV, &EMLXS_MBOX_LOCK);
cv_wait(&EMLXS_MBOX_CV, &EMLXS_MBOX_LOCK);
cv_init(&EMLXS_MBOX_CV, NULL, CV_DRIVER, NULL);
cv_destroy(&EMLXS_MBOX_CV);