1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2018 Linaro Limited
10 #include <dm/device-internal.h>
11 #include <dm/uclass-internal.h>
14 * struct tee_uclass_priv - information of a TEE, stored by the uclass
16 * @list_shm: list of structe tee_shm representing memory blocks shared
19 struct tee_uclass_priv {
20 struct list_head list_shm;
23 static const struct tee_driver_ops *tee_get_ops(struct udevice *dev)
25 return device_get_ops(dev);
28 void tee_get_version(struct udevice *dev, struct tee_version_data *vers)
30 tee_get_ops(dev)->get_version(dev, vers);
33 int tee_open_session(struct udevice *dev, struct tee_open_session_arg *arg,
34 uint num_param, struct tee_param *param)
36 return tee_get_ops(dev)->open_session(dev, arg, num_param, param);
39 int tee_close_session(struct udevice *dev, u32 session)
41 return tee_get_ops(dev)->close_session(dev, session);
44 int tee_invoke_func(struct udevice *dev, struct tee_invoke_arg *arg,
45 uint num_param, struct tee_param *param)
47 return tee_get_ops(dev)->invoke_func(dev, arg, num_param, param);
50 int __tee_shm_add(struct udevice *dev, ulong align, void *addr, ulong size,
51 u32 flags, struct tee_shm **shmp)
57 if (flags & TEE_SHM_ALLOC) {
59 p = memalign(align, size);
66 shm = calloc(1, sizeof(*shm));
77 if (flags & TEE_SHM_SEC_REGISTER) {
78 rc = tee_get_ops(dev)->shm_register(dev, shm);
83 if (flags & TEE_SHM_REGISTER) {
84 struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
86 list_add(&shm->link, &priv->list_shm);
94 if (flags & TEE_SHM_ALLOC)
100 int tee_shm_alloc(struct udevice *dev, ulong size, u32 flags,
101 struct tee_shm **shmp)
105 f |= TEE_SHM_SEC_REGISTER | TEE_SHM_REGISTER | TEE_SHM_ALLOC;
107 return __tee_shm_add(dev, 0, NULL, size, f, shmp);
110 int tee_shm_register(struct udevice *dev, void *addr, ulong size, u32 flags,
111 struct tee_shm **shmp)
113 u32 f = flags & ~TEE_SHM_ALLOC;
115 f |= TEE_SHM_SEC_REGISTER | TEE_SHM_REGISTER;
117 return __tee_shm_add(dev, 0, addr, size, f, shmp);
120 void tee_shm_free(struct tee_shm *shm)
125 if (shm->flags & TEE_SHM_SEC_REGISTER)
126 tee_get_ops(shm->dev)->shm_unregister(shm->dev, shm);
128 if (shm->flags & TEE_SHM_REGISTER)
129 list_del(&shm->link);
131 if (shm->flags & TEE_SHM_ALLOC)
137 bool tee_shm_is_registered(struct tee_shm *shm, struct udevice *dev)
139 struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
142 list_for_each_entry(s, &priv->list_shm, link)
149 struct udevice *tee_find_device(struct udevice *start,
150 int (*match)(struct tee_version_data *vers,
153 struct tee_version_data *vers)
155 struct udevice *dev = start;
156 struct tee_version_data lv;
157 struct tee_version_data *v = vers ? vers : &lv;
160 uclass_find_first_device(UCLASS_TEE, &dev);
162 uclass_find_next_device(&dev);
164 for (; dev; uclass_find_next_device(&dev)) {
165 if (device_probe(dev))
167 tee_get_ops(dev)->get_version(dev, v);
168 if (!match || match(v, data))
175 static int tee_pre_probe(struct udevice *dev)
177 struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
179 INIT_LIST_HEAD(&priv->list_shm);
184 static int tee_pre_remove(struct udevice *dev)
186 struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
190 * Any remaining shared memory must be unregistered now as U-Boot
191 * is about to hand over to the next stage and that memory will be
194 while (!list_empty(&priv->list_shm)) {
195 shm = list_first_entry(&priv->list_shm, struct tee_shm, link);
196 debug("%s: freeing leftover shm %p (size %lu, flags %#x)\n",
197 __func__, (void *)shm, shm->size, shm->flags);
204 UCLASS_DRIVER(tee) = {
207 .per_device_auto_alloc_size = sizeof(struct tee_uclass_priv),
208 .pre_probe = tee_pre_probe,
209 .pre_remove = tee_pre_remove,
212 void tee_optee_ta_uuid_from_octets(struct tee_optee_ta_uuid *d,
213 const u8 s[TEE_UUID_LEN])
215 d->time_low = ((u32)s[0] << 24) | ((u32)s[1] << 16) |
216 ((u32)s[2] << 8) | s[3],
217 d->time_mid = ((u32)s[4] << 8) | s[5];
218 d->time_hi_and_version = ((u32)s[6] << 8) | s[7];
219 memcpy(d->clock_seq_and_node, s + 8, sizeof(d->clock_seq_and_node));
222 void tee_optee_ta_uuid_to_octets(u8 d[TEE_UUID_LEN],
223 const struct tee_optee_ta_uuid *s)
225 d[0] = s->time_low >> 24;
226 d[1] = s->time_low >> 16;
227 d[2] = s->time_low >> 8;
229 d[4] = s->time_mid >> 8;
231 d[6] = s->time_hi_and_version >> 8;
232 d[7] = s->time_hi_and_version;
233 memcpy(d + 8, s->clock_seq_and_node, sizeof(s->clock_seq_and_node));