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/Linux-v6.1/Documentation/staging/
Dtee.rst2 TEE subsystem
5 This document describes the TEE subsystem in Linux.
7 A TEE (Trusted Execution Environment) is a trusted OS running in some
9 secure co-processor etc. A TEE driver handles the details needed to
10 communicate with the TEE.
14 - Registration of TEE drivers
16 - Managing shared memory between Linux and the TEE
18 - Providing a generic API to the TEE
20 The TEE interface
23 include/uapi/linux/tee.h defines the generic interface to a TEE.
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/Linux-v6.1/drivers/firmware/arm_scmi/
Doptee.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2019-2021 Linaro Ltd.
15 #include <uapi/linux/tee.h>
23 * PTA_SCMI_CMD_CAPABILITIES - Get channel capabilities
31 * PTA_SCMI_CMD_PROCESS_SMT_CHANNEL - Process SCMI message in SMT buffer
37 * and SCMI server (OP-TEE) parts.
38 * The memory uses SMT header to carry SCMI meta-data (protocol ID and
44 * PTA_SCMI_CMD_PROCESS_SMT_CHANNEL_MESSAGE - Process SMT/SCMI message
52 * The memory uses SMT header to carry SCMI meta-data (protocol ID and
58 * PTA_SCMI_CMD_GET_CHANNEL - Get channel handle
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
9 set of operating system-independent software interfaces that are
11 interfaces for: Discovery and self-description of the interfaces
13 a given device or domain into the various power-saving states that
58 bool "SCMI transport based on OP-TEE service"
65 This enables the OP-TEE service based transport for SCMI.
68 transport based on OP-TEE SCMI service, answer Y.
93 in atomic context too, at the price of using a number of busy-waiting
134 in atomic context too, at the price of using a number of busy-waiting
/Linux-v6.1/drivers/tee/optee/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
2 # OP-TEE Trusted Execution Environment Configuration
4 tristate "OP-TEE"
8 This implements the OP-TEE Trusted Execution Environment (TEE)
Dsmc_abi.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2015-2021, Linaro Limited
9 #include <linux/arm-smccc.h>
35 * OP-TEE OS via raw SMCs.
46 * A typical OP-TEE private shm allocation is 224 bytes (argument struct
69 p->attr = TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INPUT + in from_msg_param_tmp_mem()
70 attr - OPTEE_MSG_ATTR_TYPE_TMEM_INPUT; in from_msg_param_tmp_mem()
71 p->u.memref.size = mp->u.tmem.size; in from_msg_param_tmp_mem()
72 shm = (struct tee_shm *)(unsigned long)mp->u.tmem.shm_ref; in from_msg_param_tmp_mem()
74 p->u.memref.shm_offs = 0; in from_msg_param_tmp_mem()
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Doptee_private.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2015-2021, Linaro Limited
9 #include <linux/arm-smccc.h>
73 * struct optee_supp - supplicant synchronization struct
79 * communication, else -1
105 * struct optee_ffa_data - FFA communication struct
107 * OP-TEE in secure world
110 * @global_ids FF-A shared memory global handle translation
122 * struct optee_ops - OP-TEE driver internal operations
123 * @do_call_with_arg: enters OP-TEE in secure world
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Dffa_abi.c1 // SPDX-License-Identifier: GPL-2.0-only
21 * This file implement the FF-A ABI used when communicating with secure world
22 * OP-TEE OS via FF-A.
24 * 1. Maintain a hash table for lookup of a global FF-A memory handle
33 * 1. Maintain a hash table for lookup of a global FF-A memory handle
35 * FF-A assigns a global memory handle for each piece shared memory.
64 mutex_lock(&optee->ffa.mutex); in optee_shm_from_ffa_handle()
65 r = rhashtable_lookup_fast(&optee->ffa.global_ids, &global_id, in optee_shm_from_ffa_handle()
68 shm = r->shm; in optee_shm_from_ffa_handle()
69 mutex_unlock(&optee->ffa.mutex); in optee_shm_from_ffa_handle()
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Dcore.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2015-2021, Linaro Limited
39 return -ENOMEM; in optee_pool_op_alloc_helper()
41 shm->kaddr = page_address(page); in optee_pool_op_alloc_helper()
42 shm->paddr = page_to_phys(page); in optee_pool_op_alloc_helper()
43 shm->size = PAGE_SIZE << order; in optee_pool_op_alloc_helper()
51 rc = -ENOMEM; in optee_pool_op_alloc_helper()
58 rc = shm_register(shm->ctx, shm, pages, nr_pages, in optee_pool_op_alloc_helper()
59 (unsigned long)shm->kaddr); in optee_pool_op_alloc_helper()
68 free_pages((unsigned long)shm->kaddr, order); in optee_pool_op_alloc_helper()
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Doptee_ffa.h1 /* SPDX-License-Identifier: BSD-2-Clause */
3 * Copyright (c) 2019-2021, Linaro Limited
7 * This file is exported by OP-TEE and is kept in sync between secure world
8 * and normal world drivers. We're using ARM FF-A 1.0 specification.
23 * defined in FF-A specification:
27 * w3-w7: Implementation defined, free to be used below
38 * Returns the API version implemented, currently follows the FF-A version.
41 * w4-w7: Not used (MBZ)
46 * w5-w7: Not used (MBZ)
51 * Returns the revision of OP-TEE.
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Doptee_smc.h1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
3 * Copyright (c) 2015-2021, Linaro Limited
8 #include <linux/arm-smccc.h>
28 * Normal cached memory (write-back), shareable for SMP systems and not
36 * 32-bit registers.
44 * 384fb3e0-e7f8-11e3-af63-0002a5d5c51b.
75 * Used by non-secure world to figure out which Trusted OS is installed.
78 * Returns UUID in a0-4 in the same way as OPTEE_SMC_CALLS_UID
88 * Used by non-secure world to figure out which version of the Trusted OS
92 * Returns revision in a0-1 in the same way as OPTEE_SMC_CALLS_REVISION
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Doptee_msg.h1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
3 * Copyright (c) 2015-2021, Linaro Limited
12 * This file defines the OP-TEE message protocol (ABI) used to communicate
13 * with an instance of OP-TEE running in secure world.
21 * Part 1 - formatting of messages
49 * Pointer to a list of pages used to register user-defined SHM buffer.
52 * list of page addresses. OP-TEE core can reconstruct contiguous buffer from
64 * uint64_t pages_array[OPTEE_MSG_NONCONTIG_PAGE_SIZE/sizeof(uint64_t) - 1];
88 * Same values as TEE_LOGIN_* from TEE Internal API
98 * Page size used in non-contiguous buffer entries
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/Linux-v6.1/arch/arm/mach-at91/
Dsam_secure.c1 // SPDX-License-Identifier: GPL-2.0-or-later
6 #include <linux/arm-smccc.h>
19 struct arm_smccc_res res = {.a0 = -1}; in sam_smccc_call()
41 * We only check that the OP-TEE node is present and available. The in sam_secure_init()
42 * OP-TEE kernel driver is not needed for the type of interaction made in sam_secure_init()
43 * with OP-TEE here so the driver's status is not checked. in sam_secure_init()
51 pr_info("Running under OP-TEE firmware\n"); in sam_secure_init()
Dsama5.c1 // SPDX-License-Identifier: GPL-2.0-or-later
12 #include <asm/hardware/cache-l2x0.h>
23 /* OP-TEE configures the L2 cache and does not allow modifying it yet */ in sama5_l2c310_write_sec()
/Linux-v6.1/drivers/firmware/broadcom/
Dtee_bnxt_fw.c1 // SPDX-License-Identifier: GPL-2.0
21 * TA_CMD_BNXT_FASTBOOT - boot bnxt device by copying f/w into sram
29 * TEE_SUCCESS - Invoke command success
30 * TEE_ERROR_ITEM_NOT_FOUND - Corrupt f/w image found on memory
35 * TA_CMD_BNXT_COPY_COREDUMP - copy the core dump into shm
37 * param[0] (inout memref) - Coredump buffer memory reference
38 * param[1] (in value) - value.a: offset, data to be copied from
44 * TEE_SUCCESS - Invoke command success
45 * TEE_ERROR_BAD_PARAMETERS - Incorrect input param
46 * TEE_ERROR_ITEM_NOT_FOUND - Corrupt core dump
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/Linux-v6.1/Documentation/devicetree/bindings/arm/firmware/
Dlinaro,optee-tz.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/arm/firmware/linaro,optee-tz.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: OP-TEE Device Tree Bindings
10 - Jens Wiklander <jens.wiklander@linaro.org>
13 OP-TEE is a piece of software using hardware features to provide a Trusted
25 const: linaro,optee-tz
31 software is expected to be edge-triggered.
36 The method of calling the OP-TEE Trusted OS depending on smc or hvc
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/Linux-v6.1/drivers/tee/amdtee/
Damdtee_if.h1 /* SPDX-License-Identifier: MIT */
8 * This file has definitions related to Host and AMD-TEE Trusted OS interface.
9 * These definitions must match the definitions on the TEE side.
18 ** TEE Param
23 * struct memref - memory reference structure
52 /* Must be same as in GP TEE specification */
67 ** TEE Commands
72 * non-contiguous. Below structures are meant to describe a shared memory region
77 * struct tee_sg_desc - sg descriptor for a physically contiguous buffer
89 * struct tee_sg_list - structure describing a scatter/gather list
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Dcall.c1 // SPDX-License-Identifier: MIT
7 #include <linux/tee.h>
9 #include <linux/psp-tee.h>
11 #include <linux/psp-sev.h>
15 static int tee_params_to_amd_params(struct tee_param *tee, u32 count, in tee_params_to_amd_params() argument
24 if (!tee || !amd || count > TEE_MAX_PARAMS) in tee_params_to_amd_params()
25 return -EINVAL; in tee_params_to_amd_params()
27 amd->param_types = 0; in tee_params_to_amd_params()
29 /* AMD TEE does not support meta parameter */ in tee_params_to_amd_params()
30 if (tee[i].attr > TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT) in tee_params_to_amd_params()
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/Linux-v6.1/Documentation/ABI/testing/
Dsysfs-bus-optee-devices1 What: /sys/bus/tee/devices/optee-ta-<uuid>/
4 Contact: op-tee@lists.trustedfirmware.org
6 OP-TEE bus provides reference to registered drivers under this directory. The <uuid>
8 are free to create needed API under optee-ta-<uuid> directory.
/Linux-v6.1/drivers/char/hw_random/
Doptee-rng.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2018-2019 Linaro Ltd.
15 #define DRIVER_NAME "optee-rng"
20 * TA_CMD_GET_ENTROPY - Get Entropy from RNG
22 * param[0] (inout memref) - Entropy buffer memory reference
28 * TEE_SUCCESS - Invoke command success
29 * TEE_ERROR_BAD_PARAMETERS - Incorrect input param
30 * TEE_ERROR_NOT_SUPPORTED - Requested entropy size greater than size of pool
31 * TEE_ERROR_HEALTH_TEST_FAIL - Continuous health testing failed
36 * TA_CMD_GET_RNG_INFO - Get RNG information
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/Linux-v6.1/drivers/rtc/
Drtc-optee.c1 // SPDX-License-Identifier: GPL-2.0
40 * struct optee_rtc - OP-TEE RTC private data
41 * @dev: OP-TEE based RTC device.
42 * @ctx: OP-TEE context handler.
64 inv_arg.session = priv->session_id; in optee_rtc_readtime()
69 param[0].u.memref.shm = priv->shm; in optee_rtc_readtime()
72 ret = tee_client_invoke_func(priv->ctx, &inv_arg, param); in optee_rtc_readtime()
74 return ret ? ret : -EPROTO; in optee_rtc_readtime()
76 optee_tm = tee_shm_get_va(priv->shm, 0); in optee_rtc_readtime()
81 return -EPROTO; in optee_rtc_readtime()
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/Linux-v6.1/arch/arm/mach-omap2/
Domap-secure.c1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/arm-smccc.h>
23 #include "omap-secure.h"
39 * We only check that the OP-TEE node is present and available. The in omap_optee_init_check()
40 * OP-TEE kernel driver is not needed for the type of interaction made in omap_optee_init_check()
41 * with OP-TEE here so the driver's status is not checked. in omap_optee_init_check()
57 * Return the non-zero error value on failure.
101 * If this platform has OP-TEE installed we use ARM SMC calls in omap_smc1()
155 * Return the non-zero error value on failure.
166 param[0] = nargs+1; /* RX-51 needs number of arguments + 1 */ in rx51_secure_dispatcher()
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Dpm33xx-core.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2016-2018 Texas Instruments Incorporated - https://www.ti.com/
18 #include <linux/platform_data/gpio-omap.h>
34 #include "omap-secure.h"
53 return -ENOMEM; in am43xx_map_scu()
61 pr_warn("WARNING: This platform does not support off-mode, entering DeepSleep suspend.\n"); in am33xx_check_off_mode_enable()
70 * Check for am437x-gp-evm which has the right Hardware design to in am43xx_check_off_mode_enable()
73 if (of_machine_is_compatible("ti,am437x-gp-evm") && enable_off_mode) in am43xx_check_off_mode_enable()
76 pr_warn("WARNING: This platform does not support off-mode, entering DeepSleep suspend.\n"); in am43xx_check_off_mode_enable()
88 return -ENODEV; in amx3_common_init()
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/Linux-v6.1/Documentation/security/keys/
Dtrusted-encrypted.rst33 (2) TEE (Trusted Execution Environment: OP-TEE based on Arm TrustZone)
35 Rooted to Hardware Unique Key (HUK) which is generally burnt in on-chip
36 fuses and is accessible to TEE only.
41 mode, trust is rooted to the OTPMK, a never-disclosed 256-bit key
51 (2) TEE
72 (2) TEE
75 be extended with TEE based measured boot process.
86 TPMs have well-documented, standardized interfaces and APIs.
88 (2) TEE
90 TEEs have well-documented, standardized client interface and APIs. For
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/Linux-v6.1/include/uapi/linux/
Dtee.h2 * Copyright (c) 2015-2016, Linaro Limited
35 * This file describes the API provided by a TEE driver to user space.
37 * Each TEE driver defines a TEE specific protocol which is used for the
47 #define TEE_GEN_CAP_GP (1 << 0)/* GlobalPlatform compliant TEE */
52 #define TEE_MEMREF_NULL (__u64)(-1) /* NULL MemRef Buffer */
55 * TEE Implementation ID
61 * OP-TEE specific capabilities
66 * struct tee_ioctl_version_data - TEE version
67 * @impl_id: [out] TEE implementation id
71 * Identifies the TEE implementation, @impl_id is one of TEE_IMPL_ID_* above.
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/Linux-v6.1/Documentation/devicetree/bindings/firmware/
Darm,scmi.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Sudeep Holla <sudeep.holla@arm.com>
31 - description: SCMI compliant firmware with mailbox transport
33 - const: arm,scmi
34 - description: SCMI compliant firmware with ARM SMC/HVC transport
36 - const: arm,scmi-smc
37 - description: SCMI compliant firmware with SCMI Virtio transport.
40 - const: arm,scmi-virtio
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