static int tz_start(struct tee *tee)
{
struct tee_tz *ptee;
int ret;
BUG_ON(!tee || !tee->priv);
dev_dbg(tee->dev, ">\n");
if (!CAPABLE(tee)) {
dev_dbg(tee->dev, "< not capable\n");
return -EBUSY;
}
ptee = tee->priv;
BUG_ON(ptee->started);
ptee->started = true;
ret = configure_shm(ptee);
if (ret)
goto exit;
#ifdef CONFIG_OUTER_CACHE
ret = register_outercache_mutex(ptee, true);
if (ret)
goto exit;
#endif
exit:
if (ret)
ptee->started = false;
dev_dbg(tee->dev, "< ret=%d dev=%s\n", ret, tee->name);
return ret;
}
static int start_tz_world(void)
{
int ret;
/* allow SMC call, mutex will prevent any other access */
mutex_lock(&g_mutex_teez);
tee_tz_ready = true;
/* Check that we're talking to the expected TEE */
if (!teesmc_api_uid_is_st() || !teesmc_os_uuid_is_optee()) {
ret = -EINVAL;
goto out;
}
ret = configure_shm();
if (ret)
goto out;
ret = register_l2cc_mutex(true);
out:
if (ret)
tee_tz_ready = false;
mutex_unlock(&g_mutex_teez);
return ret;
}
