1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2018 Linaro Limited
11 #include <dm/device-internal.h>
12 #include <dm/uclass-internal.h>
15 * struct tee_uclass_priv - information of a TEE, stored by the uclass
17 * @list_shm: list of structe tee_shm representing memory blocks shared
20 struct tee_uclass_priv {
21 struct list_head list_shm;
24 static const struct tee_driver_ops *tee_get_ops(struct udevice *dev)
26 return device_get_ops(dev);
29 void tee_get_version(struct udevice *dev, struct tee_version_data *vers)
31 tee_get_ops(dev)->get_version(dev, vers);
34 int tee_open_session(struct udevice *dev, struct tee_open_session_arg *arg,
35 uint num_param, struct tee_param *param)
37 return tee_get_ops(dev)->open_session(dev, arg, num_param, param);
40 int tee_close_session(struct udevice *dev, u32 session)
42 return tee_get_ops(dev)->close_session(dev, session);
45 int tee_invoke_func(struct udevice *dev, struct tee_invoke_arg *arg,
46 uint num_param, struct tee_param *param)
48 return tee_get_ops(dev)->invoke_func(dev, arg, num_param, param);
51 int __tee_shm_add(struct udevice *dev, ulong align, void *addr, ulong size,
52 u32 flags, struct tee_shm **shmp)
58 if (flags & TEE_SHM_ALLOC) {
60 p = memalign(align, size);
67 shm = calloc(1, sizeof(*shm));
78 if (flags & TEE_SHM_SEC_REGISTER) {
79 rc = tee_get_ops(dev)->shm_register(dev, shm);
84 if (flags & TEE_SHM_REGISTER) {
85 struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
87 list_add(&shm->link, &priv->list_shm);
95 if (flags & TEE_SHM_ALLOC)
101 int tee_shm_alloc(struct udevice *dev, ulong size, u32 flags,
102 struct tee_shm **shmp)
106 f |= TEE_SHM_SEC_REGISTER | TEE_SHM_REGISTER | TEE_SHM_ALLOC;
108 return __tee_shm_add(dev, 0, NULL, size, f, shmp);
111 int tee_shm_register(struct udevice *dev, void *addr, ulong size, u32 flags,
112 struct tee_shm **shmp)
114 u32 f = flags & ~TEE_SHM_ALLOC;
116 f |= TEE_SHM_SEC_REGISTER | TEE_SHM_REGISTER;
118 return __tee_shm_add(dev, 0, addr, size, f, shmp);
121 void tee_shm_free(struct tee_shm *shm)
126 if (shm->flags & TEE_SHM_SEC_REGISTER)
127 tee_get_ops(shm->dev)->shm_unregister(shm->dev, shm);
129 if (shm->flags & TEE_SHM_REGISTER)
130 list_del(&shm->link);
132 if (shm->flags & TEE_SHM_ALLOC)
138 bool tee_shm_is_registered(struct tee_shm *shm, struct udevice *dev)
140 struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
143 list_for_each_entry(s, &priv->list_shm, link)
150 struct udevice *tee_find_device(struct udevice *start,
151 int (*match)(struct tee_version_data *vers,
154 struct tee_version_data *vers)
156 struct udevice *dev = start;
157 struct tee_version_data lv;
158 struct tee_version_data *v = vers ? vers : &lv;
161 uclass_find_first_device(UCLASS_TEE, &dev);
163 uclass_find_next_device(&dev);
165 for (; dev; uclass_find_next_device(&dev)) {
166 if (device_probe(dev))
168 tee_get_ops(dev)->get_version(dev, v);
169 if (!match || match(v, data))
176 static int tee_pre_probe(struct udevice *dev)
178 struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
180 INIT_LIST_HEAD(&priv->list_shm);
185 static int tee_pre_remove(struct udevice *dev)
187 struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
191 * Any remaining shared memory must be unregistered now as U-Boot
192 * is about to hand over to the next stage and that memory will be
195 while (!list_empty(&priv->list_shm)) {
196 shm = list_first_entry(&priv->list_shm, struct tee_shm, link);
197 debug("%s: freeing leftover shm %p (size %lu, flags %#x)\n",
198 __func__, (void *)shm, shm->size, shm->flags);
205 UCLASS_DRIVER(tee) = {
208 .per_device_auto_alloc_size = sizeof(struct tee_uclass_priv),
209 .pre_probe = tee_pre_probe,
210 .pre_remove = tee_pre_remove,
213 void tee_optee_ta_uuid_from_octets(struct tee_optee_ta_uuid *d,
214 const u8 s[TEE_UUID_LEN])
216 d->time_low = ((u32)s[0] << 24) | ((u32)s[1] << 16) |
217 ((u32)s[2] << 8) | s[3],
218 d->time_mid = ((u32)s[4] << 8) | s[5];
219 d->time_hi_and_version = ((u32)s[6] << 8) | s[7];
220 memcpy(d->clock_seq_and_node, s + 8, sizeof(d->clock_seq_and_node));
223 void tee_optee_ta_uuid_to_octets(u8 d[TEE_UUID_LEN],
224 const struct tee_optee_ta_uuid *s)
226 d[0] = s->time_low >> 24;
227 d[1] = s->time_low >> 16;
228 d[2] = s->time_low >> 8;
230 d[4] = s->time_mid >> 8;
232 d[6] = s->time_hi_and_version >> 8;
233 d[7] = s->time_hi_and_version;
234 memcpy(d + 8, s->clock_seq_and_node, sizeof(s->clock_seq_and_node));