mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 16:38:53 +09:00
![Simon Glass](/assets/img/avatar_default.png)
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
236 lines
5.1 KiB
C
236 lines
5.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2018 Linaro Limited
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <tee.h>
|
|
#include <dm/device-internal.h>
|
|
#include <dm/uclass-internal.h>
|
|
|
|
/**
|
|
* struct tee_uclass_priv - information of a TEE, stored by the uclass
|
|
*
|
|
* @list_shm: list of structe tee_shm representing memory blocks shared
|
|
* with the TEE.
|
|
*/
|
|
struct tee_uclass_priv {
|
|
struct list_head list_shm;
|
|
};
|
|
|
|
static const struct tee_driver_ops *tee_get_ops(struct udevice *dev)
|
|
{
|
|
return device_get_ops(dev);
|
|
}
|
|
|
|
void tee_get_version(struct udevice *dev, struct tee_version_data *vers)
|
|
{
|
|
tee_get_ops(dev)->get_version(dev, vers);
|
|
}
|
|
|
|
int tee_open_session(struct udevice *dev, struct tee_open_session_arg *arg,
|
|
uint num_param, struct tee_param *param)
|
|
{
|
|
return tee_get_ops(dev)->open_session(dev, arg, num_param, param);
|
|
}
|
|
|
|
int tee_close_session(struct udevice *dev, u32 session)
|
|
{
|
|
return tee_get_ops(dev)->close_session(dev, session);
|
|
}
|
|
|
|
int tee_invoke_func(struct udevice *dev, struct tee_invoke_arg *arg,
|
|
uint num_param, struct tee_param *param)
|
|
{
|
|
return tee_get_ops(dev)->invoke_func(dev, arg, num_param, param);
|
|
}
|
|
|
|
int __tee_shm_add(struct udevice *dev, ulong align, void *addr, ulong size,
|
|
u32 flags, struct tee_shm **shmp)
|
|
{
|
|
struct tee_shm *shm;
|
|
void *p = addr;
|
|
int rc;
|
|
|
|
if (flags & TEE_SHM_ALLOC) {
|
|
if (align)
|
|
p = memalign(align, size);
|
|
else
|
|
p = malloc(size);
|
|
}
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
shm = calloc(1, sizeof(*shm));
|
|
if (!shm) {
|
|
rc = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
shm->dev = dev;
|
|
shm->addr = p;
|
|
shm->size = size;
|
|
shm->flags = flags;
|
|
|
|
if (flags & TEE_SHM_SEC_REGISTER) {
|
|
rc = tee_get_ops(dev)->shm_register(dev, shm);
|
|
if (rc)
|
|
goto err;
|
|
}
|
|
|
|
if (flags & TEE_SHM_REGISTER) {
|
|
struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
|
|
|
|
list_add(&shm->link, &priv->list_shm);
|
|
}
|
|
|
|
*shmp = shm;
|
|
|
|
return 0;
|
|
err:
|
|
free(shm);
|
|
if (flags & TEE_SHM_ALLOC)
|
|
free(p);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int tee_shm_alloc(struct udevice *dev, ulong size, u32 flags,
|
|
struct tee_shm **shmp)
|
|
{
|
|
u32 f = flags;
|
|
|
|
f |= TEE_SHM_SEC_REGISTER | TEE_SHM_REGISTER | TEE_SHM_ALLOC;
|
|
|
|
return __tee_shm_add(dev, 0, NULL, size, f, shmp);
|
|
}
|
|
|
|
int tee_shm_register(struct udevice *dev, void *addr, ulong size, u32 flags,
|
|
struct tee_shm **shmp)
|
|
{
|
|
u32 f = flags & ~TEE_SHM_ALLOC;
|
|
|
|
f |= TEE_SHM_SEC_REGISTER | TEE_SHM_REGISTER;
|
|
|
|
return __tee_shm_add(dev, 0, addr, size, f, shmp);
|
|
}
|
|
|
|
void tee_shm_free(struct tee_shm *shm)
|
|
{
|
|
if (!shm)
|
|
return;
|
|
|
|
if (shm->flags & TEE_SHM_SEC_REGISTER)
|
|
tee_get_ops(shm->dev)->shm_unregister(shm->dev, shm);
|
|
|
|
if (shm->flags & TEE_SHM_REGISTER)
|
|
list_del(&shm->link);
|
|
|
|
if (shm->flags & TEE_SHM_ALLOC)
|
|
free(shm->addr);
|
|
|
|
free(shm);
|
|
}
|
|
|
|
bool tee_shm_is_registered(struct tee_shm *shm, struct udevice *dev)
|
|
{
|
|
struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
|
|
struct tee_shm *s;
|
|
|
|
list_for_each_entry(s, &priv->list_shm, link)
|
|
if (s == shm)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
struct udevice *tee_find_device(struct udevice *start,
|
|
int (*match)(struct tee_version_data *vers,
|
|
const void *data),
|
|
const void *data,
|
|
struct tee_version_data *vers)
|
|
{
|
|
struct udevice *dev = start;
|
|
struct tee_version_data lv;
|
|
struct tee_version_data *v = vers ? vers : &lv;
|
|
|
|
if (!dev)
|
|
uclass_find_first_device(UCLASS_TEE, &dev);
|
|
else
|
|
uclass_find_next_device(&dev);
|
|
|
|
for (; dev; uclass_find_next_device(&dev)) {
|
|
if (device_probe(dev))
|
|
continue;
|
|
tee_get_ops(dev)->get_version(dev, v);
|
|
if (!match || match(v, data))
|
|
return dev;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int tee_pre_probe(struct udevice *dev)
|
|
{
|
|
struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
|
|
|
|
INIT_LIST_HEAD(&priv->list_shm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tee_pre_remove(struct udevice *dev)
|
|
{
|
|
struct tee_uclass_priv *priv = dev_get_uclass_priv(dev);
|
|
struct tee_shm *shm;
|
|
|
|
/*
|
|
* Any remaining shared memory must be unregistered now as U-Boot
|
|
* is about to hand over to the next stage and that memory will be
|
|
* reused.
|
|
*/
|
|
while (!list_empty(&priv->list_shm)) {
|
|
shm = list_first_entry(&priv->list_shm, struct tee_shm, link);
|
|
debug("%s: freeing leftover shm %p (size %lu, flags %#x)\n",
|
|
__func__, (void *)shm, shm->size, shm->flags);
|
|
tee_shm_free(shm);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(tee) = {
|
|
.id = UCLASS_TEE,
|
|
.name = "tee",
|
|
.per_device_auto = sizeof(struct tee_uclass_priv),
|
|
.pre_probe = tee_pre_probe,
|
|
.pre_remove = tee_pre_remove,
|
|
};
|
|
|
|
void tee_optee_ta_uuid_from_octets(struct tee_optee_ta_uuid *d,
|
|
const u8 s[TEE_UUID_LEN])
|
|
{
|
|
d->time_low = ((u32)s[0] << 24) | ((u32)s[1] << 16) |
|
|
((u32)s[2] << 8) | s[3],
|
|
d->time_mid = ((u32)s[4] << 8) | s[5];
|
|
d->time_hi_and_version = ((u32)s[6] << 8) | s[7];
|
|
memcpy(d->clock_seq_and_node, s + 8, sizeof(d->clock_seq_and_node));
|
|
}
|
|
|
|
void tee_optee_ta_uuid_to_octets(u8 d[TEE_UUID_LEN],
|
|
const struct tee_optee_ta_uuid *s)
|
|
{
|
|
d[0] = s->time_low >> 24;
|
|
d[1] = s->time_low >> 16;
|
|
d[2] = s->time_low >> 8;
|
|
d[3] = s->time_low;
|
|
d[4] = s->time_mid >> 8;
|
|
d[5] = s->time_mid;
|
|
d[6] = s->time_hi_and_version >> 8;
|
|
d[7] = s->time_hi_and_version;
|
|
memcpy(d + 8, s->clock_seq_and_node, sizeof(s->clock_seq_and_node));
|
|
}
|