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optee: probe RPMB device using RPMB subsystem

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Adds support in the OP-TEE drivers (both SMC and FF-A ABIs) to probe and
use an RPMB device via the RPMB subsystem instead of passing the RPMB
frames via tee-supplicant in user space. A fallback mechanism is kept to
route RPMB frames via tee-supplicant if the RPMB subsystem isn't
available.

The OP-TEE RPC ABI is extended to support iterating over all RPMB
devices until one is found with the expected RPMB key already
programmed.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Manuel Traut <manut@mecka.net>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lore.kernel.org/r/20240814153558.708365-5-jens.wiklander@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Jens Wiklander 2024-08-14 17:35:58 +02:00 committed by Ulf Hansson
parent c30b855e81
commit f0c8431568
11 changed files with 387 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
Documentation/ABI/testing/sysfs-class-tee Normal file
View File

@ -0,0 +1,15 @@
What: /sys/class/tee/tee{,priv}X/rpmb_routing_model
Date: May 2024
KernelVersion: 6.10
Contact: op-tee@lists.trustedfirmware.org
Description:
RPMB frames can be routed to the RPMB device via the
user-space daemon tee-supplicant or the RPMB subsystem
in the kernel. The value "user" means that the driver
will route the RPMB frames via user space. Conversely,
"kernel" means that the frames are routed via the RPMB
subsystem without assistance from tee-supplicant. It
should be assumed that RPMB frames are routed via user
space if the variable is absent. The primary purpose
of this variable is to let systemd know whether
tee-supplicant is needed in the early boot with initramfs.

1
MAINTAINERS
View File

@ -22458,6 +22458,7 @@ M: Jens Wiklander <jens.wiklander@linaro.org>
R: Sumit Garg <sumit.garg@linaro.org>
L: op-tee@lists.trustedfirmware.org
S: Maintained
F: Documentation/ABI/testing/sysfs-class-tee
F: Documentation/driver-api/tee.rst
F: Documentation/tee/
F: Documentation/userspace-api/tee.rst

96
drivers/tee/optee/core.c
View File

@ -10,17 +10,85 @@
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/rpmb.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/tee_core.h>
#include <linux/types.h>
#include "optee_private.h"
struct blocking_notifier_head optee_rpmb_intf_added =
BLOCKING_NOTIFIER_INIT(optee_rpmb_intf_added);
static int rpmb_add_dev(struct device *dev)
{
blocking_notifier_call_chain(&optee_rpmb_intf_added, 0,
to_rpmb_dev(dev));
return 0;
}
static struct class_interface rpmb_class_intf = {
.add_dev = rpmb_add_dev,
};
void optee_bus_scan_rpmb(struct work_struct *work)
{
struct optee *optee = container_of(work, struct optee,
rpmb_scan_bus_work);
int ret;
if (!optee->rpmb_scan_bus_done) {
ret = optee_enumerate_devices(PTA_CMD_GET_DEVICES_RPMB);
optee->rpmb_scan_bus_done = !ret;
if (ret && ret != -ENODEV)
pr_info("Scanning for RPMB device: ret %d\n", ret);
}
}
int optee_rpmb_intf_rdev(struct notifier_block *intf, unsigned long action,
void *data)
{
struct optee *optee = container_of(intf, struct optee, rpmb_intf);
schedule_work(&optee->rpmb_scan_bus_work);
return 0;
}
static void optee_bus_scan(struct work_struct *work)
{
WARN_ON(optee_enumerate_devices(PTA_CMD_GET_DEVICES_SUPP));
}
static ssize_t rpmb_routing_model_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct optee *optee = dev_get_drvdata(dev);
const char *s;
if (optee->in_kernel_rpmb_routing)
s = "kernel";
else
s = "user";
return scnprintf(buf, PAGE_SIZE, "%s\n", s);
}
static DEVICE_ATTR_RO(rpmb_routing_model);
static struct attribute *optee_dev_attrs[] = {
&dev_attr_rpmb_routing_model.attr,
NULL
};
ATTRIBUTE_GROUPS(optee_dev);
void optee_set_dev_group(struct optee *optee)
{
tee_device_set_dev_groups(optee->teedev, optee_dev_groups);
tee_device_set_dev_groups(optee->supp_teedev, optee_dev_groups);
}
int optee_open(struct tee_context *ctx, bool cap_memref_null)
{
struct optee_context_data *ctxdata;
@ -97,6 +165,9 @@ void optee_release_supp(struct tee_context *ctx)
void optee_remove_common(struct optee *optee)
{
blocking_notifier_chain_unregister(&optee_rpmb_intf_added,
&optee->rpmb_intf);
cancel_work_sync(&optee->rpmb_scan_bus_work);
/* Unregister OP-TEE specific client devices on TEE bus */
optee_unregister_devices();
@ -113,13 +184,18 @@ void optee_remove_common(struct optee *optee)
tee_shm_pool_free(optee->pool);
optee_supp_uninit(&optee->supp);
mutex_destroy(&optee->call_queue.mutex);
rpmb_dev_put(optee->rpmb_dev);
mutex_destroy(&optee->rpmb_dev_mutex);
}
static int smc_abi_rc;
static int ffa_abi_rc;
static bool intf_is_regged;
static int __init optee_core_init(void)
{
int rc;
/*
* The kernel may have crashed at the same time that all available
* secure world threads were suspended and we cannot reschedule the
@ -130,18 +206,36 @@ static int __init optee_core_init(void)
if (is_kdump_kernel())
return -ENODEV;
if (IS_REACHABLE(CONFIG_RPMB)) {
rc = rpmb_interface_register(&rpmb_class_intf);
if (rc)
return rc;
intf_is_regged = true;
}
smc_abi_rc = optee_smc_abi_register();
ffa_abi_rc = optee_ffa_abi_register();
/* If both failed there's no point with this module */
if (smc_abi_rc && ffa_abi_rc)
if (smc_abi_rc && ffa_abi_rc) {
if (IS_REACHABLE(CONFIG_RPMB)) {
rpmb_interface_unregister(&rpmb_class_intf);
intf_is_regged = false;
}
return smc_abi_rc;
}
return 0;
}
module_init(optee_core_init);
static void __exit optee_core_exit(void)
{
if (IS_REACHABLE(CONFIG_RPMB) && intf_is_regged) {
rpmb_interface_unregister(&rpmb_class_intf);
intf_is_regged = false;
}
if (!smc_abi_rc)
optee_smc_abi_unregister();
if (!ffa_abi_rc)

7
drivers/tee/optee/device.c
View File

@ -43,6 +43,13 @@ static int get_devices(struct tee_context *ctx, u32 session,
ret = tee_client_invoke_func(ctx, &inv_arg, param);
if ((ret < 0) || ((inv_arg.ret != TEEC_SUCCESS) &&
(inv_arg.ret != TEEC_ERROR_SHORT_BUFFER))) {
/*
* TEE_ERROR_STORAGE_NOT_AVAILABLE is returned when getting
* the list of device TAs that depends on RPMB but a usable
* RPMB device isn't found.
*/
if (inv_arg.ret == TEE_ERROR_STORAGE_NOT_AVAILABLE)
return -ENODEV;
pr_err("PTA_CMD_GET_DEVICES invoke function err: %x\n",
inv_arg.ret);
return -EINVAL;

14
drivers/tee/optee/ffa_abi.c
View File

@ -7,6 +7,7 @@
#include <linux/arm_ffa.h>
#include <linux/errno.h>
#include <linux/rpmb.h>
#include <linux/scatterlist.h>
#include <linux/sched.h>
#include <linux/slab.h>
@ -909,6 +910,10 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
optee->ffa.bottom_half_value = U32_MAX;
optee->rpc_param_count = rpc_param_count;
if (IS_REACHABLE(CONFIG_RPMB) &&
(sec_caps & OPTEE_FFA_SEC_CAP_RPMB_PROBE))
optee->in_kernel_rpmb_routing = true;
teedev = tee_device_alloc(&optee_ffa_clnt_desc, NULL, optee->pool,
optee);
if (IS_ERR(teedev)) {
@ -925,6 +930,8 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
}
optee->supp_teedev = teedev;
optee_set_dev_group(optee);
rc = tee_device_register(optee->teedev);
if (rc)
goto err_unreg_supp_teedev;
@ -940,6 +947,7 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
optee_cq_init(&optee->call_queue, 0);
optee_supp_init(&optee->supp);
optee_shm_arg_cache_init(optee, arg_cache_flags);
mutex_init(&optee->rpmb_dev_mutex);
ffa_dev_set_drvdata(ffa_dev, optee);
ctx = teedev_open(optee->teedev);
if (IS_ERR(ctx)) {
@ -961,6 +969,10 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
if (rc)
goto err_unregister_devices;
INIT_WORK(&optee->rpmb_scan_bus_work, optee_bus_scan_rpmb);
optee->rpmb_intf.notifier_call = optee_rpmb_intf_rdev;
blocking_notifier_chain_register(&optee_rpmb_intf_added,
&optee->rpmb_intf);
pr_info("initialized driver\n");
return 0;
@ -974,6 +986,8 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
teedev_close_context(ctx);
err_rhashtable_free:
rhashtable_free_and_destroy(&optee->ffa.global_ids, rh_free_fn, NULL);
rpmb_dev_put(optee->rpmb_dev);
mutex_destroy(&optee->rpmb_dev_mutex);
optee_supp_uninit(&optee->supp);
mutex_destroy(&optee->call_queue.mutex);
mutex_destroy(&optee->ffa.mutex);

2
drivers/tee/optee/optee_ffa.h
View File

@ -92,6 +92,8 @@
#define OPTEE_FFA_SEC_CAP_ARG_OFFSET BIT(0)
/* OP-TEE supports asynchronous notification via FF-A */
#define OPTEE_FFA_SEC_CAP_ASYNC_NOTIF BIT(1)
/* OP-TEE supports probing for RPMB device if needed */
#define OPTEE_FFA_SEC_CAP_RPMB_PROBE BIT(2)
#define OPTEE_FFA_EXCHANGE_CAPABILITIES OPTEE_FFA_BLOCKING_CALL(2)

26
drivers/tee/optee/optee_private.h
View File

@ -7,7 +7,9 @@
#define OPTEE_PRIVATE_H
#include <linux/arm-smccc.h>
#include <linux/notifier.h>
#include <linux/rhashtable.h>
#include <linux/rpmb.h>
#include <linux/semaphore.h>
#include <linux/tee_core.h>
#include <linux/types.h>
@ -20,6 +22,7 @@
/* Some Global Platform error codes used in this driver */
#define TEEC_SUCCESS 0x00000000
#define TEEC_ERROR_BAD_PARAMETERS 0xFFFF0006
#define TEEC_ERROR_ITEM_NOT_FOUND 0xFFFF0008
#define TEEC_ERROR_NOT_SUPPORTED 0xFFFF000A
#define TEEC_ERROR_COMMUNICATION 0xFFFF000E
#define TEEC_ERROR_OUT_OF_MEMORY 0xFFFF000C
@ -28,6 +31,7 @@
/* API Return Codes are from the GP TEE Internal Core API Specification */
#define TEE_ERROR_TIMEOUT 0xFFFF3001
#define TEE_ERROR_STORAGE_NOT_AVAILABLE 0xF0100003
#define TEEC_ORIGIN_COMMS 0x00000002
@ -200,6 +204,12 @@ struct optee_ops {
* @notif: notification synchronization struct
* @supp: supplicant synchronization struct for RPC to supplicant
* @pool: shared memory pool
* @mutex: mutex protecting @rpmb_dev
* @rpmb_dev: current RPMB device or NULL
* @rpmb_scan_bus_done flag if device registation of RPMB dependent devices
* was already done
* @rpmb_scan_bus_work workq to for an RPMB device and to scan optee bus
* and register RPMB dependent optee drivers
* @rpc_param_count: If > 0 number of RPC parameters to make room for
* @scan_bus_done flag if device registation was already done.
* @scan_bus_work workq to scan optee bus and register optee drivers
@ -218,9 +228,16 @@ struct optee {
struct optee_notif notif;
struct optee_supp supp;
struct tee_shm_pool *pool;
/* Protects rpmb_dev pointer */
struct mutex rpmb_dev_mutex;
struct rpmb_dev *rpmb_dev;
struct notifier_block rpmb_intf;
unsigned int rpc_param_count;
bool scan_bus_done;
bool scan_bus_done;
bool rpmb_scan_bus_done;
bool in_kernel_rpmb_routing;
struct work_struct scan_bus_work;
struct work_struct rpmb_scan_bus_work;
};
struct optee_session {
@ -253,6 +270,8 @@ struct optee_call_ctx {
size_t num_entries;
};
extern struct blocking_notifier_head optee_rpmb_intf_added;
int optee_notif_init(struct optee *optee, u_int max_key);
void optee_notif_uninit(struct optee *optee);
int optee_notif_wait(struct optee *optee, u_int key, u32 timeout);
@ -283,9 +302,14 @@ int optee_cancel_req(struct tee_context *ctx, u32 cancel_id, u32 session);
#define PTA_CMD_GET_DEVICES 0x0
#define PTA_CMD_GET_DEVICES_SUPP 0x1
#define PTA_CMD_GET_DEVICES_RPMB 0x2
int optee_enumerate_devices(u32 func);
void optee_unregister_devices(void);
void optee_bus_scan_rpmb(struct work_struct *work);
int optee_rpmb_intf_rdev(struct notifier_block *intf, unsigned long action,
void *data);
void optee_set_dev_group(struct optee *optee);
void optee_remove_common(struct optee *optee);
int optee_open(struct tee_context *ctx, bool cap_memref_null);
void optee_release(struct tee_context *ctx);

35
drivers/tee/optee/optee_rpc_cmd.h
View File

@ -104,4 +104,39 @@
/* I2C master control flags */
#define OPTEE_RPC_I2C_FLAGS_TEN_BIT BIT(0)
/*
* Reset RPMB probing
*
* Releases an eventually already used RPMB devices and starts over searching
* for RPMB devices. Returns the kind of shared memory to use in subsequent
* OPTEE_RPC_CMD_RPMB_PROBE_NEXT and OPTEE_RPC_CMD_RPMB calls.
*
* [out] value[0].a OPTEE_RPC_SHM_TYPE_*, the parameter for
* OPTEE_RPC_CMD_SHM_ALLOC
*/
#define OPTEE_RPC_CMD_RPMB_PROBE_RESET 22
/*
* Probe next RPMB device
*
* [out] value[0].a Type of RPMB device, OPTEE_RPC_RPMB_*
* [out] value[0].b EXT CSD-slice 168 "RPMB Size"
* [out] value[0].c EXT CSD-slice 222 "Reliable Write Sector Count"
* [out] memref[1] Buffer with the raw CID
*/
#define OPTEE_RPC_CMD_RPMB_PROBE_NEXT 23
/* Type of RPMB device */
#define OPTEE_RPC_RPMB_EMMC 0
#define OPTEE_RPC_RPMB_UFS 1
#define OPTEE_RPC_RPMB_NVME 2
/*
* Replay Protected Memory Block access
*
* [in] memref[0] Frames to device
* [out] memref[1] Frames from device
*/
#define OPTEE_RPC_CMD_RPMB_FRAMES 24
#endif /*__OPTEE_RPC_CMD_H*/

2
drivers/tee/optee/optee_smc.h
View File

@ -278,6 +278,8 @@ struct optee_smc_get_shm_config_result {
#define OPTEE_SMC_SEC_CAP_ASYNC_NOTIF BIT(5)
/* Secure world supports pre-allocating RPC arg struct */
#define OPTEE_SMC_SEC_CAP_RPC_ARG BIT(6)
/* Secure world supports probing for RPMB device if needed */
#define OPTEE_SMC_SEC_CAP_RPMB_PROBE BIT(7)
#define OPTEE_SMC_FUNCID_EXCHANGE_CAPABILITIES 9
#define OPTEE_SMC_EXCHANGE_CAPABILITIES \

177
drivers/tee/optee/rpc.c
View File

@ -7,6 +7,7 @@
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/rpmb.h>
#include <linux/slab.h>
#include <linux/tee_core.h>
#include "optee_private.h"
@ -261,6 +262,154 @@ void optee_rpc_cmd_free_suppl(struct tee_context *ctx, struct tee_shm *shm)
optee_supp_thrd_req(ctx, OPTEE_RPC_CMD_SHM_FREE, 1, &param);
}
static void handle_rpc_func_rpmb_probe_reset(struct tee_context *ctx,
struct optee *optee,
struct optee_msg_arg *arg)
{
struct tee_param params[1];
if (arg->num_params != ARRAY_SIZE(params) ||
optee->ops->from_msg_param(optee, params, arg->num_params,
arg->params) ||
params[0].attr != TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT) {
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
return;
}
params[0].u.value.a = OPTEE_RPC_SHM_TYPE_KERNEL;
params[0].u.value.b = 0;
params[0].u.value.c = 0;
if (optee->ops->to_msg_param(optee, arg->params,
arg->num_params, params)) {
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
return;
}
mutex_lock(&optee->rpmb_dev_mutex);
rpmb_dev_put(optee->rpmb_dev);
optee->rpmb_dev = NULL;
mutex_unlock(&optee->rpmb_dev_mutex);
arg->ret = TEEC_SUCCESS;
}
static int rpmb_type_to_rpc_type(enum rpmb_type rtype)
{
switch (rtype) {
case RPMB_TYPE_EMMC:
return OPTEE_RPC_RPMB_EMMC;
case RPMB_TYPE_UFS:
return OPTEE_RPC_RPMB_UFS;
case RPMB_TYPE_NVME:
return OPTEE_RPC_RPMB_NVME;
default:
return -1;
}
}
static int rpc_rpmb_match(struct device *dev, const void *data)
{
struct rpmb_dev *rdev = to_rpmb_dev(dev);
return rpmb_type_to_rpc_type(rdev->descr.type) >= 0;
}
static void handle_rpc_func_rpmb_probe_next(struct tee_context *ctx,
struct optee *optee,
struct optee_msg_arg *arg)
{
struct rpmb_dev *rdev;
struct tee_param params[2];
void *buf;
if (arg->num_params != ARRAY_SIZE(params) ||
optee->ops->from_msg_param(optee, params, arg->num_params,
arg->params) ||
params[0].attr != TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT ||
params[1].attr != TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_OUTPUT) {
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
return;
}
buf = tee_shm_get_va(params[1].u.memref.shm,
params[1].u.memref.shm_offs);
if (!buf) {
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
return;
}
mutex_lock(&optee->rpmb_dev_mutex);
rdev = rpmb_dev_find_device(NULL, optee->rpmb_dev, rpc_rpmb_match);
rpmb_dev_put(optee->rpmb_dev);
optee->rpmb_dev = rdev;
mutex_unlock(&optee->rpmb_dev_mutex);
if (!rdev) {
arg->ret = TEEC_ERROR_ITEM_NOT_FOUND;
return;
}
if (params[1].u.memref.size < rdev->descr.dev_id_len) {
arg->ret = TEEC_ERROR_SHORT_BUFFER;
return;
}
memcpy(buf, rdev->descr.dev_id, rdev->descr.dev_id_len);
params[1].u.memref.size = rdev->descr.dev_id_len;
params[0].u.value.a = rpmb_type_to_rpc_type(rdev->descr.type);
params[0].u.value.b = rdev->descr.capacity;
params[0].u.value.c = rdev->descr.reliable_wr_count;
if (optee->ops->to_msg_param(optee, arg->params,
arg->num_params, params)) {
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
return;
}
arg->ret = TEEC_SUCCESS;
}
static void handle_rpc_func_rpmb_frames(struct tee_context *ctx,
struct optee *optee,
struct optee_msg_arg *arg)
{
struct tee_param params[2];
struct rpmb_dev *rdev;
void *p0, *p1;
mutex_lock(&optee->rpmb_dev_mutex);
rdev = rpmb_dev_get(optee->rpmb_dev);
mutex_unlock(&optee->rpmb_dev_mutex);
if (!rdev) {
arg->ret = TEEC_ERROR_ITEM_NOT_FOUND;
return;
}
if (arg->num_params != ARRAY_SIZE(params) ||
optee->ops->from_msg_param(optee, params, arg->num_params,
arg->params) ||
params[0].attr != TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INPUT ||
params[1].attr != TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_OUTPUT) {
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
goto out;
}
p0 = tee_shm_get_va(params[0].u.memref.shm,
params[0].u.memref.shm_offs);
p1 = tee_shm_get_va(params[1].u.memref.shm,
params[1].u.memref.shm_offs);
if (rpmb_route_frames(rdev, p0, params[0].u.memref.size, p1,
params[1].u.memref.size)) {
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
goto out;
}
if (optee->ops->to_msg_param(optee, arg->params,
arg->num_params, params)) {
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
goto out;
}
arg->ret = TEEC_SUCCESS;
out:
rpmb_dev_put(rdev);
}
void optee_rpc_cmd(struct tee_context *ctx, struct optee *optee,
struct optee_msg_arg *arg)
{
@ -277,6 +426,34 @@ void optee_rpc_cmd(struct tee_context *ctx, struct optee *optee,
case OPTEE_RPC_CMD_I2C_TRANSFER:
handle_rpc_func_cmd_i2c_transfer(ctx, arg);
break;
/*
* optee->in_kernel_rpmb_routing true means that OP-TEE supports
* in-kernel RPMB routing _and_ that the RPMB subsystem is
* reachable. This is reported to user space with
* rpmb_routing_model=kernel in sysfs.
*
* rpmb_routing_model=kernel is also a promise to user space that
* RPMB access will not require supplicant support, hence the
* checks below.
*/
case OPTEE_RPC_CMD_RPMB_PROBE_RESET:
if (optee->in_kernel_rpmb_routing)
handle_rpc_func_rpmb_probe_reset(ctx, optee, arg);
else
handle_rpc_supp_cmd(ctx, optee, arg);
break;
case OPTEE_RPC_CMD_RPMB_PROBE_NEXT:
if (optee->in_kernel_rpmb_routing)
handle_rpc_func_rpmb_probe_next(ctx, optee, arg);
else
handle_rpc_supp_cmd(ctx, optee, arg);
break;
case OPTEE_RPC_CMD_RPMB_FRAMES:
if (optee->in_kernel_rpmb_routing)
handle_rpc_func_rpmb_frames(ctx, optee, arg);
else
handle_rpc_supp_cmd(ctx, optee, arg);
break;
default:
handle_rpc_supp_cmd(ctx, optee, arg);
}

14
drivers/tee/optee/smc_abi.c
View File

@ -20,6 +20,7 @@
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/rpmb.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/string.h>
@ -1685,6 +1686,10 @@ static int optee_probe(struct platform_device *pdev)
optee->smc.sec_caps = sec_caps;
optee->rpc_param_count = rpc_param_count;
if (IS_REACHABLE(CONFIG_RPMB) &&
(sec_caps & OPTEE_SMC_SEC_CAP_RPMB_PROBE))
optee->in_kernel_rpmb_routing = true;
teedev = tee_device_alloc(&optee_clnt_desc, NULL, pool, optee);
if (IS_ERR(teedev)) {
rc = PTR_ERR(teedev);
@ -1699,6 +1704,8 @@ static int optee_probe(struct platform_device *pdev)
}
optee->supp_teedev = teedev;
optee_set_dev_group(optee);
rc = tee_device_register(optee->teedev);
if (rc)
goto err_unreg_supp_teedev;
@ -1712,6 +1719,7 @@ static int optee_probe(struct platform_device *pdev)
optee->smc.memremaped_shm = memremaped_shm;
optee->pool = pool;
optee_shm_arg_cache_init(optee, arg_cache_flags);
mutex_init(&optee->rpmb_dev_mutex);
platform_set_drvdata(pdev, optee);
ctx = teedev_open(optee->teedev);
@ -1766,6 +1774,10 @@ static int optee_probe(struct platform_device *pdev)
if (rc)
goto err_disable_shm_cache;
INIT_WORK(&optee->rpmb_scan_bus_work, optee_bus_scan_rpmb);
optee->rpmb_intf.notifier_call = optee_rpmb_intf_rdev;
blocking_notifier_chain_register(&optee_rpmb_intf_added,
&optee->rpmb_intf);
pr_info("initialized driver\n");
return 0;
@ -1779,6 +1791,8 @@ static int optee_probe(struct platform_device *pdev)
err_close_ctx:
teedev_close_context(ctx);
err_supp_uninit:
rpmb_dev_put(optee->rpmb_dev);
mutex_destroy(&optee->rpmb_dev_mutex);
optee_shm_arg_cache_uninit(optee);
optee_supp_uninit(&optee->supp);
mutex_destroy(&optee->call_queue.mutex);