March 2026 - OP-TEE - lists.trustedfirmware.org

[PATCH v2 00/15] firmware: qcom: Add OP-TEE PAS service support

by Sumit Garg

From: Sumit Garg <sumit.garg(a)oss.qualcomm.com> Qcom platforms has the legacy of using non-standard SCM calls splintered over the various kernel drivers. These SCM calls aren't compliant with the standard SMC calling conventions which is a prerequisite to enable migration to the FF-A specifications from Arm. OP-TEE as an alternative trusted OS to Qualcomm TEE (QTEE) can't support these non-standard SCM calls. And even for newer architectures with S-EL2 and Hafnium support, QTEE won't be able to support SCM calls either with FF-A requirements coming in. And with both OP-TEE and QTEE drivers well integrated in the TEE subsystem, it makes further sense to reuse the TEE bus client drivers infrastructure. The added benefit of TEE bus infrastructure is that there is support for discoverable/enumerable services. With that client drivers don't have to manually invoke a special SCM call to know the service status. So enable the generic Peripheral Authentication Service (PAS) provided by the firmware. It acts as the common layer with different TZ backends plugged in whether it's an SCM implementation or a proper TEE bus based PAS service implementation. The TEE PAS service ABI is designed to be extensible with additional API as PTA_QCOM_PAS_CAPABILITIES. This allows to accommodate any future extensions of the PAS service needed while still maintaining backwards compatibility. Currently OP-TEE support is being added to provide the backend PAS service implementation which can be found as part of this PR [1]. This implementation has been tested on Kodiak/RB3Gen2 board with lemans EVK board being the next target. In addition to that WIN/IPQ targets planning to use OP-TEE will use this service too. Surely the backwards compatibility is maintained and tested for SCM backend. Patch summary: - Patch #1: adds Kodiak EL2 overlay since boot stack with TF-A/OP-TEE only allow UEFI and Linux to boot in EL2. - Patch #2: adds generic PAS service. - Patch #3: migrates SCM backend to generic PAS service. - Patch #4: adds TEE/OP-TEE backend for generic PAS service. - Patch #5-#13: migrates all client drivers to generic PAS service. - Patch #14: drops legacy PAS SCM exported APIs. The patch-set is based on v7.0-rc2 tag and can be found in git tree here [2]. Merge strategy: It is expected due to APIs dependency, the entire patch-set to go via the Qcom tree. All other subsystem maintainers, it will be great if I can get acks for the corresponding subsystem patches. [1] https://github.com/OP-TEE/optee_os/pull/7721 [2] https://git.kernel.org/pub/scm/linux/kernel/git/sumit.garg/linux.git/log/?h… --- Changes in v2: - Fixed kernel doc warnings. - Polish commit message and comments for patch #2. - Pass proper PAS ID in set_remote_state API for media firmware drivers. - Added Maintainer entry and dropped MODULE_AUTHOR. - Picked up ack from Jeff. Mukesh Ojha (1): arm64: dts: qcom: kodiak: Add EL2 overlay Sumit Garg (14): firmware: qcom: Add a generic PAS service firmware: qcom_scm: Migrate to generic PAS service firmware: qcom: Add a PAS TEE service remoteproc: qcom_q6v5_pas: Switch over to generic PAS TZ APIs remoteproc: qcom_q6v5_mss: Switch to generic PAS TZ APIs soc: qcom: mdtloader: Switch to generic PAS TZ APIs remoteproc: qcom_wcnss: Switch to generic PAS TZ APIs remoteproc: qcom: Select QCOM_PAS_TEE service backend drm/msm: Switch to generic PAS TZ APIs media: qcom: Switch to generic PAS TZ APIs net: ipa: Switch to generic PAS TZ APIs wifi: ath12k: Switch to generic PAS TZ APIs firmware: qcom_scm: Remove SCM PAS wrappers MAINTAINERS: Add maintainer entry for Qualcomm PAS TZ service MAINTAINERS | 9 + arch/arm64/boot/dts/qcom/Makefile | 2 + arch/arm64/boot/dts/qcom/kodiak-el2.dtso | 35 ++ drivers/firmware/qcom/Kconfig | 18 + drivers/firmware/qcom/Makefile | 2 + drivers/firmware/qcom/qcom_pas.c | 298 +++++++++++ drivers/firmware/qcom/qcom_pas.h | 53 ++ drivers/firmware/qcom/qcom_pas_tee.c | 477 ++++++++++++++++++ drivers/firmware/qcom/qcom_scm.c | 304 ++++------- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 +- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 11 +- .../media/platform/qcom/iris/iris_firmware.c | 9 +- drivers/media/platform/qcom/venus/firmware.c | 11 +- drivers/net/ipa/ipa_main.c | 13 +- drivers/net/wireless/ath/ath12k/ahb.c | 8 +- drivers/remoteproc/Kconfig | 1 + drivers/remoteproc/qcom_q6v5_mss.c | 5 +- drivers/remoteproc/qcom_q6v5_pas.c | 51 +- drivers/remoteproc/qcom_wcnss.c | 12 +- drivers/soc/qcom/mdt_loader.c | 12 +- include/linux/firmware/qcom/qcom_pas.h | 41 ++ include/linux/firmware/qcom/qcom_scm.h | 29 -- include/linux/soc/qcom/mdt_loader.h | 6 +- 23 files changed, 1108 insertions(+), 303 deletions(-) create mode 100644 arch/arm64/boot/dts/qcom/kodiak-el2.dtso create mode 100644 drivers/firmware/qcom/qcom_pas.c create mode 100644 drivers/firmware/qcom/qcom_pas.h create mode 100644 drivers/firmware/qcom/qcom_pas_tee.c create mode 100644 include/linux/firmware/qcom/qcom_pas.h -- 2.51.0

1 day, 18 hours

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[GIT PULL] OP-TEE update for 7.1

by Jens Wiklander

Hello soc maintainers, Please pull this small patch simlifying the OP-TEE context matching logic. Thanks, Jens The following changes since commit 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f: Linux 7.0-rc1 (2026-02-22 13:18:59 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee.git tags/optee-for-v7.1 for you to fetch changes up to 8c6e843f1c26a0b12720cab02f785c46450b6adc: optee: simplify OP-TEE context match (2026-03-04 08:33:31 +0100) ---------------------------------------------------------------- OP-TEE update for 7.1 Simplify TEE implementor ID match logic ---------------------------------------------------------------- Rouven Czerwinski (1): optee: simplify OP-TEE context match drivers/tee/optee/device.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)

1 day, 19 hours

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[GIT PULL] TEE update for 7.1

by Jens Wiklander

Hello soc maintainers, Please pull this small patch cleaning up kernel-doc comments in tee_core.h. Thanks, Jens The following changes since commit 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f: Linux 7.0-rc1 (2026-02-22 13:18:59 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee.git tags/tee-for-v7.1 for you to fetch changes up to e416e7fa417b2d2604c1526a2f9cc38da7ced166: tee: clean up tee_core.h kernel-doc (2026-03-13 08:22:54 +0100) ---------------------------------------------------------------- TEE update for 7.1 Clean up tee_core.h kernel-doc to eliminate build warnings ---------------------------------------------------------------- Randy Dunlap (1): tee: clean up tee_core.h kernel-doc include/linux/tee_core.h | 30 ++++++++++++++++-------------- 1 file changed, 16 insertions(+), 14 deletions(-)

1 day, 19 hours

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[PATCH v3 00/15] firmware: qcom: Add OP-TEE PAS service support

by Sumit Garg

From: Sumit Garg <sumit.garg(a)oss.qualcomm.com> Qcom platforms has the legacy of using non-standard SCM calls splintered over the various kernel drivers. These SCM calls aren't compliant with the standard SMC calling conventions which is a prerequisite to enable migration to the FF-A specifications from Arm. OP-TEE as an alternative trusted OS to Qualcomm TEE (QTEE) can't support these non-standard SCM calls. And even for newer architectures using S-EL2 with Hafnium support, QTEE won't be able to support SCM calls either with FF-A requirements coming in. And with both OP-TEE and QTEE drivers well integrated in the TEE subsystem, it makes further sense to reuse the TEE bus client drivers infrastructure. The added benefit of TEE bus infrastructure is that there is support for discoverable/enumerable services. With that client drivers don't have to manually invoke a special SCM call to know the service status. So enable the generic Peripheral Authentication Service (PAS) provided by the firmware. It acts as the common layer with different TZ backends plugged in whether it's an SCM implementation or a proper TEE bus based PAS service implementation. The TEE PAS service ABI is designed to be extensible with additional API as PTA_QCOM_PAS_CAPABILITIES. This allows to accommodate any future extensions of the PAS service needed while still maintaining backwards compatibility. Currently OP-TEE support is being added to provide the backend PAS service implementation which can be found as part of this PR [1]. This implementation has been tested on Kodiak/RB3Gen2 board with lemans EVK board being the next target. In addition to that WIN/IPQ targets planning to use OP-TEE will use this service too. Surely the backwards compatibility is maintained and tested for SCM backend. Patch summary: - Patch #1: adds Kodiak EL2 overlay since boot stack with TF-A/OP-TEE only allow UEFI and Linux to boot in EL2. - Patch #2: adds generic PAS service. - Patch #3: migrates SCM backend to generic PAS service. - Patch #4: adds TEE/OP-TEE backend for generic PAS service. - Patch #5-#13: migrates all client drivers to generic PAS service. - Patch #14: drops legacy PAS SCM exported APIs. The patch-set is based on v7.0-rc5 tag and can be found in git tree here [2]. Merge strategy: It is expected due to APIs dependency, the entire patch-set to go via the Qcom tree. All other subsystem maintainers, it will be great if I can get acks for the corresponding subsystem patches. [1] https://github.com/OP-TEE/optee_os/pull/7721 [2] https://git.kernel.org/pub/scm/linux/kernel/git/sumit.garg/linux.git/log/?h… --- Changes in v3: - Incorporated some style and misc. comments for patch #2, #3 and #4. - Add QCOM_PAS Kconfig dependency for various subsystems. - Switch from pseudo TA to proper TA invoke commands. Changes in v2: - Fixed kernel doc warnings. - Polish commit message and comments for patch #2. - Pass proper PAS ID in set_remote_state API for media firmware drivers. - Added Maintainer entry and dropped MODULE_AUTHOR. Mukesh Ojha (1): arm64: dts: qcom: kodiak: Add EL2 overlay Sumit Garg (14): firmware: qcom: Add a generic PAS service firmware: qcom_scm: Migrate to generic PAS service firmware: qcom: Add a PAS TEE service remoteproc: qcom_q6v5_pas: Switch over to generic PAS TZ APIs remoteproc: qcom_q6v5_mss: Switch to generic PAS TZ APIs soc: qcom: mdtloader: Switch to generic PAS TZ APIs remoteproc: qcom_wcnss: Switch to generic PAS TZ APIs remoteproc: qcom: Select QCOM_PAS generic service drm/msm: Switch to generic PAS TZ APIs media: qcom: Switch to generic PAS TZ APIs net: ipa: Switch to generic PAS TZ APIs wifi: ath12k: Switch to generic PAS TZ APIs firmware: qcom_scm: Remove SCM PAS wrappers MAINTAINERS: Add maintainer entry for Qualcomm PAS TZ service MAINTAINERS | 9 + arch/arm64/boot/dts/qcom/Makefile | 2 + arch/arm64/boot/dts/qcom/kodiak-el2.dtso | 35 ++ drivers/firmware/qcom/Kconfig | 19 + drivers/firmware/qcom/Makefile | 2 + drivers/firmware/qcom/qcom_pas.c | 288 +++++++++++ drivers/firmware/qcom/qcom_pas.h | 50 ++ drivers/firmware/qcom/qcom_pas_tee.c | 478 ++++++++++++++++++ drivers/firmware/qcom/qcom_scm.c | 302 ++++------- drivers/gpu/drm/msm/Kconfig | 1 + drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 +- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 11 +- drivers/media/platform/qcom/iris/Kconfig | 25 +- .../media/platform/qcom/iris/iris_firmware.c | 9 +- drivers/media/platform/qcom/venus/Kconfig | 1 + drivers/media/platform/qcom/venus/firmware.c | 11 +- drivers/net/ipa/Kconfig | 2 +- drivers/net/ipa/ipa_main.c | 13 +- drivers/net/wireless/ath/ath12k/Kconfig | 2 +- drivers/net/wireless/ath/ath12k/ahb.c | 8 +- drivers/remoteproc/Kconfig | 1 + drivers/remoteproc/qcom_q6v5_mss.c | 5 +- drivers/remoteproc/qcom_q6v5_pas.c | 51 +- drivers/remoteproc/qcom_wcnss.c | 12 +- drivers/soc/qcom/mdt_loader.c | 12 +- include/linux/firmware/qcom/qcom_pas.h | 43 ++ include/linux/firmware/qcom/qcom_scm.h | 29 -- include/linux/soc/qcom/mdt_loader.h | 6 +- 28 files changed, 1114 insertions(+), 317 deletions(-) create mode 100644 arch/arm64/boot/dts/qcom/kodiak-el2.dtso create mode 100644 drivers/firmware/qcom/qcom_pas.c create mode 100644 drivers/firmware/qcom/qcom_pas.h create mode 100644 drivers/firmware/qcom/qcom_pas_tee.c create mode 100644 include/linux/firmware/qcom/qcom_pas.h -- 2.51.0

1 day, 19 hours

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Possible race during OP-TEE kernel module device probing

by Shf Chen (陳少甫)

Hi, We found a possible race condition issue during OP-TEE kernel driver probing the device. A NULL pointer dereference exception can happen when another kernel driver open OP-TEE context with tee_client_open_context() then do a SMC call to OP-TEE. Below is the exception: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 39-bit VAs, pgdp=00000001026bb000 [0000000000000000] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Workqueue: events_unbound deferred_probe_work_func pstate: 03400005 (nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : optee_cq_wait_init+0x78/0x124 [optee] lr : optee_cq_wait_init+0x60/0x124 [optee] sp : ffffffc081fcb7f0 x29: ffffffc081fcb7f0 x28: 0000000000000000 x27: 0000000000001000 x26: ffffff8080e42c60 x25: ffffff8084d46040 x24: 0000000000000000 x23: 0000000000000000 x22: ffffffc081fcb8c0 x21: ffffffc081fcb8a8 x20: 0000000000000000 x19: ffffff8082741570 x18: ffffffe572f8ca00 x17: 00000000fa28650f x16: 00000000fa28650f x15: ffffff8084d47000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000084d47000 x11: 0000000000000000 x10: 0000000032000012 x9 : 04d4600000000001 x8 : ffffffc081fcb8c8 x7 : 0000000000000000 x6 : 000000000000003f x5 : ffffff83c86649e0 x4 : 0000000000000008 x3 : 0000000000000000 x2 : ffffff80827415a0 x1 : 0000000000000000 x0 : ffffffc081fcb8c0 Call trace: optee_cq_wait_init+0x78/0x124 [optee f6dbc35f8d96acbe1f3c329d72018151d796208d] optee_smc_do_call_with_arg+0x12c/0x95c [optee f6dbc35f8d96acbe1f3c329d72018151d796208d] optee_shm_register+0x284/0x360 [optee f6dbc35f8d96acbe1f3c329d72018151d796208d] register_shm_helper+0x1a4/0x2f4 [tee cdd8a0d077d984bda1f31f9e8903836edbe46603] tee_shm_register_kernel_buf+0x60/0x90 [tee cdd8a0d077d984bda1f31f9e8903836edbe46603] cmdq_sec_allocate_wsm+0x58/0xc4 [mtk_cmdq_sec_mbox ac82dc958e32252a21c6ce55bb8839ebb288387a] cmdq_sec_probe+0x80/0x4a0 [mtk_cmdq_sec_mbox ac82dc958e32252a21c6ce55bb8839ebb288387a] We found the optee->call_queue hasn't been initialized when our driver called OP-TEE, and it might have some issues about the device data structure initialize order in optee_probe()[drivers/tee/optee/smc_abi.c]: --- rc = tee_device_register(optee->teedev); // <----- TEE device register here if (rc) goto err_unreg_supp_teedev; rc = tee_device_register(optee->supp_teedev); if (rc) goto err_unreg_supp_teedev; optee_cq_init(&optee->call_queue, thread_count); // <----- Some data structures are initialized afterwards optee_supp_init(&optee->supp); optee->smc.memremaped_shm = memremaped_shm; optee->pool = pool; optee_shm_arg_cache_init(optee, arg_cache_flags); mutex_init(&optee->rpmb_dev_mutex); --- We want to ask if the data structure initialization should be done before the tee device registration? Best regards, Shao-Fu Chen

1 day, 22 hours

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[PATCH 1/1] tee: amdtee: store buffer ID in tee_shm->sec_world_id

by Rijo Thomas

Drop struct amdtee_shm_data and the per-context shm_list. In handle_map_shmem() save the returned buf_id in shm->sec_world_id instead of allocating a list node. Use shm->sec_world_id (with get_buffer_id() removed) in amdtee_unmap_shmem() and in call.c when building memref params. Remove shm_list and shm_mutex from amdtee_context_data. Aligns amdtee with other TEE drivers (optee, tstee, qcomtee) that use tee_shm->sec_world_id for the secure-world handle. Signed-off-by: Rijo Thomas <Rijo-john.Thomas(a)amd.com> --- drivers/tee/amdtee/amdtee_private.h | 16 --------- drivers/tee/amdtee/call.c | 2 +- drivers/tee/amdtee/core.c | 52 +++-------------------------- 3 files changed, 5 insertions(+), 65 deletions(-) diff --git a/drivers/tee/amdtee/amdtee_private.h b/drivers/tee/amdtee/amdtee_private.h index d87050033894..2c5ba02258b8 100644 --- a/drivers/tee/amdtee/amdtee_private.h +++ b/drivers/tee/amdtee/amdtee_private.h @@ -65,13 +65,9 @@ struct amdtee_session { /** * struct amdtee_context_data - AMD-TEE driver context data * @sess_list: Keeps track of sessions opened in current TEE context - * @shm_list: Keeps track of buffers allocated and mapped in current TEE - * context */ struct amdtee_context_data { struct list_head sess_list; - struct list_head shm_list; - struct mutex shm_mutex; /* synchronizes access to @shm_list */ }; struct amdtee_driver_data { @@ -83,17 +79,6 @@ struct shmem_desc { u64 size; }; -/** - * struct amdtee_shm_data - Shared memory data - * @kaddr: Kernel virtual address of shared memory - * @buf_id: Buffer id of memory mapped by TEE_CMD_ID_MAP_SHARED_MEM - */ -struct amdtee_shm_data { - struct list_head shm_node; - void *kaddr; - u32 buf_id; -}; - /** * struct amdtee_ta_data - Keeps track of all TAs loaded in AMD Secure * Processor @@ -168,5 +153,4 @@ int handle_invoke_cmd(struct tee_ioctl_invoke_arg *arg, u32 sinfo, struct tee_shm_pool *amdtee_config_shm(void); -u32 get_buffer_id(struct tee_shm *shm); #endif /*AMDTEE_PRIVATE_H*/ diff --git a/drivers/tee/amdtee/call.c b/drivers/tee/amdtee/call.c index 441b2ceaafc3..23ccd0f037a7 100644 --- a/drivers/tee/amdtee/call.c +++ b/drivers/tee/amdtee/call.c @@ -45,7 +45,7 @@ static int tee_params_to_amd_params(struct tee_param *tee, u32 count, /* It is assumed that all values are within 2^32-1 */ if (type > TEE_OP_PARAM_TYPE_VALUE_INOUT) { - u32 buf_id = get_buffer_id(tee[i].u.memref.shm); + u32 buf_id = (u32)tee[i].u.memref.shm->sec_world_id; amd->params[i].mref.buf_id = buf_id; amd->params[i].mref.offset = tee[i].u.memref.shm_offs; diff --git a/drivers/tee/amdtee/core.c b/drivers/tee/amdtee/core.c index a1347d04b3ac..0e56f4cf2697 100644 --- a/drivers/tee/amdtee/core.c +++ b/drivers/tee/amdtee/core.c @@ -43,8 +43,6 @@ static int amdtee_open(struct tee_context *ctx) return -ENOMEM; INIT_LIST_HEAD(&ctxdata->sess_list); - INIT_LIST_HEAD(&ctxdata->shm_list); - mutex_init(&ctxdata->shm_mutex); ctx->data = ctxdata; return 0; @@ -87,7 +85,6 @@ static void amdtee_release(struct tee_context *ctx) list_del(&sess->list_node); release_session(sess); } - mutex_destroy(&ctxdata->shm_mutex); kfree(ctxdata); ctx->data = NULL; @@ -152,23 +149,6 @@ static struct amdtee_session *find_session(struct amdtee_context_data *ctxdata, return NULL; } -u32 get_buffer_id(struct tee_shm *shm) -{ - struct amdtee_context_data *ctxdata = shm->ctx->data; - struct amdtee_shm_data *shmdata; - u32 buf_id = 0; - - mutex_lock(&ctxdata->shm_mutex); - list_for_each_entry(shmdata, &ctxdata->shm_list, shm_node) - if (shmdata->kaddr == shm->kaddr) { - buf_id = shmdata->buf_id; - break; - } - mutex_unlock(&ctxdata->shm_mutex); - - return buf_id; -} - static DEFINE_MUTEX(drv_mutex); static int copy_ta_binary(struct tee_context *ctx, void *ptr, void **ta, size_t *ta_size) @@ -342,8 +322,6 @@ int amdtee_close_session(struct tee_context *ctx, u32 session) int amdtee_map_shmem(struct tee_shm *shm) { - struct amdtee_context_data *ctxdata; - struct amdtee_shm_data *shmnode; struct shmem_desc shmem; int rc, count; u32 buf_id; @@ -351,10 +329,6 @@ int amdtee_map_shmem(struct tee_shm *shm) if (!shm) return -EINVAL; - shmnode = kmalloc_obj(*shmnode); - if (!shmnode) - return -ENOMEM; - count = 1; shmem.kaddr = shm->kaddr; shmem.size = shm->size; @@ -366,44 +340,26 @@ int amdtee_map_shmem(struct tee_shm *shm) rc = handle_map_shmem(count, &shmem, &buf_id); if (rc) { pr_err("map_shmem failed: ret = %d\n", rc); - kfree(shmnode); return rc; } - shmnode->kaddr = shm->kaddr; - shmnode->buf_id = buf_id; - ctxdata = shm->ctx->data; - mutex_lock(&ctxdata->shm_mutex); - list_add(&shmnode->shm_node, &ctxdata->shm_list); - mutex_unlock(&ctxdata->shm_mutex); + shm->sec_world_id = buf_id; - pr_debug("buf_id :[%x] kaddr[%p]\n", shmnode->buf_id, shmnode->kaddr); + pr_debug("buf_id :[%x] kaddr[%p]\n", buf_id, shm->kaddr); return 0; } void amdtee_unmap_shmem(struct tee_shm *shm) { - struct amdtee_context_data *ctxdata; - struct amdtee_shm_data *shmnode; u32 buf_id; if (!shm) return; - buf_id = get_buffer_id(shm); - /* Unmap the shared memory from TEE */ + buf_id = (u32)shm->sec_world_id; handle_unmap_shmem(buf_id); - - ctxdata = shm->ctx->data; - mutex_lock(&ctxdata->shm_mutex); - list_for_each_entry(shmnode, &ctxdata->shm_list, shm_node) - if (buf_id == shmnode->buf_id) { - list_del(&shmnode->shm_node); - kfree(shmnode); - break; - } - mutex_unlock(&ctxdata->shm_mutex); + shm->sec_world_id = 0; } int amdtee_invoke_func(struct tee_context *ctx, -- 2.43.0

1 day, 23 hours

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[PATCH 00/14] firmware: qcom: Add OP-TEE PAS service support

by Sumit Garg

From: Sumit Garg <sumit.garg(a)oss.qualcomm.com> Qcom platforms has the legacy of using non-standard SCM calls splintered over the various kernel drivers. These SCM calls aren't compliant with the standard SMC calling conventions which is a prerequisite to enable migration to the FF-A specifications from Arm. OP-TEE as an alternative trusted OS to QTEE can't support these non- standard SCM calls. And even for newer architectures QTEE won't be able to support SCM calls either with FF-A requirements coming in. And with both OP-TEE and QTEE drivers well integrated in the TEE subsystem, it makes further sense to reuse the TEE bus client drivers infrastructure. The added benefit of TEE bus infrastructure is that there is support for discoverable/enumerable services. With that client drivers don't have to manually invoke a special SCM call to know the service status. So enable the generic Peripheral Authentication Service (PAS) provided by the firmware. It acts as the common layer with different TZ backends plugged in whether it's an SCM implementation or a proper TEE bus based PAS service implementation. The TEE PAS service ABI is designed to be extensible with additional API as PTA_QCOM_PAS_CAPABILITIES. This allows to accommodate any future extensions of the PAS service needed while still maintaining backwards compatibility. Currently OP-TEE support is being added to provide the backend PAS service implementation which can be found as part of this PR [1]. This implementation has been tested on Kodiak/RB3Gen2 board with lemans EVK board being the next target. In addition to that WIN/IPQ targets planning to use OP-TEE will use this service too. Patch summary: - Patch #1: adds Kodiak EL2 overlay since boot stack with TF-A/OP-TEE only allow UEFI and Linux to boot in EL2. - Patch #2: adds generic PAS service. - Patch #3: migrates SCM backend to generic PAS service. - Patch #4: adds TEE/OP-TEE backend for generic PAS service. - Patch #5-#13: migrates all client drivers to generic PAS service. - Patch #14: drops legacy PAS SCM exported APIs. The patch-set is based on v7.0-rc2 tag and can be found in git tree here [2]. Merge strategy: ---------------- It is expected due to APIs dependency, the entire patch-set to go via the Qcom tree. All other subsystem maintainers, it will be great if I can get acks for the corresponding subsystem patches. [1] https://github.com/OP-TEE/optee_os/pull/7721 [2] https://git.kernel.org/pub/scm/linux/kernel/git/sumit.garg/linux.git/log/?h… Mukesh Ojha (1): arm64: dts: qcom: kodiak: Add EL2 overlay Sumit Garg (13): firmware: qcom: Add a generic PAS service firmware: qcom_scm: Migrate to generic PAS service firmware: qcom: Add a PAS TEE service remoteproc: qcom_q6v5_pas: Switch over to generic PAS TZ APIs remoteproc: qcom_q6v5_mss: Switch to generic PAS TZ APIs soc: qcom: mdtloader: Switch to generic PAS TZ APIs remoteproc: qcom_wcnss: Switch to generic PAS TZ APIs remoteproc: qcom: Select QCOM_PAS_TEE service backend drm/msm: Switch to generic PAS TZ APIs media: qcom: Switch to generic PAS TZ APIs net: ipa: Switch to generic PAS TZ APIs wifi: ath12k: Switch to generic PAS TZ APIs firmware: qcom_scm: Remove SCM PAS wrappers arch/arm64/boot/dts/qcom/Makefile | 2 + arch/arm64/boot/dts/qcom/kodiak-el2.dtso | 35 ++ drivers/firmware/qcom/Kconfig | 18 + drivers/firmware/qcom/Makefile | 2 + drivers/firmware/qcom/qcom_pas.c | 295 +++++++++++ drivers/firmware/qcom/qcom_pas.h | 53 ++ drivers/firmware/qcom/qcom_pas_tee.c | 478 ++++++++++++++++++ drivers/firmware/qcom/qcom_scm.c | 304 ++++------- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 +- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 11 +- .../media/platform/qcom/iris/iris_firmware.c | 9 +- drivers/media/platform/qcom/venus/firmware.c | 11 +- drivers/net/ipa/ipa_main.c | 13 +- drivers/net/wireless/ath/ath12k/ahb.c | 8 +- drivers/remoteproc/Kconfig | 1 + drivers/remoteproc/qcom_q6v5_mss.c | 5 +- drivers/remoteproc/qcom_q6v5_pas.c | 51 +- drivers/remoteproc/qcom_wcnss.c | 12 +- drivers/soc/qcom/mdt_loader.c | 12 +- include/linux/firmware/qcom/qcom_pas.h | 41 ++ include/linux/firmware/qcom/qcom_scm.h | 29 -- include/linux/soc/qcom/mdt_loader.h | 6 +- 22 files changed, 1097 insertions(+), 303 deletions(-) create mode 100644 arch/arm64/boot/dts/qcom/kodiak-el2.dtso create mode 100644 drivers/firmware/qcom/qcom_pas.c create mode 100644 drivers/firmware/qcom/qcom_pas.h create mode 100644 drivers/firmware/qcom/qcom_pas_tee.c create mode 100644 include/linux/firmware/qcom/qcom_pas.h -- 2.51.0

2 days, 23 hours

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OP-TEE: memory corruption in scmi_pin_control_list_associations_handler()

by Dan Carpenter

When we do SCMI on OP-TEE, the in buffer and out buffer are the same buffer. I added some debug code to confirm this: diff --git a/module/msg_smt/src/mod_msg_smt.c b/module/msg_smt/src/mod_msg_smt.c index 853fe66b8d27..1e92dcd49c29 100644 --- a/module/msg_smt/src/mod_msg_smt.c +++ b/module/msg_smt/src/mod_msg_smt.c @@ -175,6 +175,11 @@ static int smt_write_payload(fwk_id_t channel_id, if (!channel_ctx->locked) return FWK_E_ACCESS; + FWK_LOG_ERR("OUT=%p IN=%p %s", + channel_ctx->out->payload, + channel_ctx->in->payload, + (channel_ctx->out->payload == channel_ctx->in->payload) ? "equal" : "different"); + memcpy(((uint8_t*)channel_ctx->out->payload) + offset, payload, size); return FWK_SUCCESS; And it's true: [ 0.000000] OUT=0x9c401004 IN=0x9c401004 equal This normally isn't a problem because we read a few inputs at the start of the function and then write out the result to the output at the end. But in the scmi_pin_control_list_associations_handler() it does a loop where each iteration reads from parameters->index which is input and writes to the output with scmi_pin_control_ctx.scmi_api->write_payload() and that corrupts the input data. Copying the input buffer to a the stack the issue for me, but I feel like it is a hack. It would be better to use separate buffers for input and output. I think this comes from: https://github.com/OP-TEE/optee_os/blob/master/core/kernel/pseudo_ta.c#L93 I added a print statement to there as well: diff --git a/core/kernel/pseudo_ta.c b/core/kernel/pseudo_ta.c index 587faa41a770..426870fb934c 100644 --- a/core/kernel/pseudo_ta.c +++ b/core/kernel/pseudo_ta.c @@ -90,6 +90,7 @@ static TEE_Result copy_in_param(struct ts_session *s __maybe_unused, va = NULL; } + EMSG("n=%lu va=%p", n, va); tee_param[n].memref.buffer = va; tee_param[n].memref.size = mem->size; break; E/TC:? 0 copy_in_param:93 n=1 va=0x9c401000 E/TC:? 0 copy_in_param:93 n=2 va=0x9c401000 Here is the patch to save "parameters" to a different buffer. --- .../scmi_pin_control/src/mod_scmi_pin_control.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/module/scmi_pin_control/src/mod_scmi_pin_control.c b/module/scmi_pin_control/src/mod_scmi_pin_control.c index a0b90dd2b73f..54e613b70f69 100644 --- a/module/scmi_pin_control/src/mod_scmi_pin_control.c +++ b/module/scmi_pin_control/src/mod_scmi_pin_control.c @@ -344,7 +344,7 @@ static int scmi_pin_control_list_associations_handler( fwk_id_t service_id, const uint32_t *payload) { - const struct scmi_pin_control_list_associations_a2p *parameters; + const struct scmi_pin_control_list_associations_a2p parameters; uint32_t payload_size; uint16_t identifiers_count; uint16_t total_number_of_associations; @@ -362,8 +362,9 @@ static int scmi_pin_control_list_associations_handler( payload_size = (uint32_t)sizeof(return_values); parameters = (const struct scmi_pin_control_list_associations_a2p *)payload; + memcpy(&parameters, payload, sizeof(parameters)); - status = map_identifier(parameters->identifier, &mapped_identifier); + status = map_identifier(parameters.identifier, &mapped_identifier); if (status != FWK_SUCCESS) { return_values.status = SCMI_NOT_FOUND; @@ -371,7 +372,7 @@ static int scmi_pin_control_list_associations_handler( } status = scmi_pin_control_ctx.pinctrl_api->get_total_number_of_associations( - mapped_identifier, parameters->flags, &total_number_of_associations); + mapped_identifier, parameters.flags, &total_number_of_associations); if (status != FWK_SUCCESS) { return_values.status = SCMI_NOT_FOUND; goto exit; @@ -388,11 +389,11 @@ static int scmi_pin_control_list_associations_handler( identifiers_count = (uint16_t)FWK_MIN( buffer_allowed_identifiers, - (uint16_t)(total_number_of_associations - parameters->index)); + (uint16_t)(total_number_of_associations - parameters.index)); return_values.flags = identifiers_count; return_values.flags |= SHIFT_LEFT_BY_POS( - (total_number_of_associations - parameters->index - identifiers_count), + (total_number_of_associations - parameters.index - identifiers_count), NUM_OF_REMAINING_ELEMENTS_POS); for (identifier_index = 0; identifier_index < identifiers_count; @@ -401,8 +402,8 @@ static int scmi_pin_control_list_associations_handler( status = scmi_pin_control_ctx.pinctrl_api->get_list_associations( mapped_identifier, - parameters->flags, - (parameters->index + identifier_index), + parameters.flags, + (parameters.index + identifier_index), &object_id); if (status != FWK_SUCCESS) { return_values.status = SCMI_NOT_FOUND; -- 2.51.0

5 days

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[GIT PULL] TEE shared memory fix for 7.0

by Jens Wiklander

Hello arm-soc maintainers, Please pull this patch removing the refcounting of kernel pages within the TEE shared memory helper. Thanks, Jens The following changes since commit 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f: Linux 7.0-rc1 (2026-02-22 13:18:59 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee.git tags/tee-fix-for-v7.0 for you to fetch changes up to 08d9a4580f71120be3c5b221af32dca00a48ceb0: tee: shm: Remove refcounting of kernel pages (2026-03-03 09:03:04 +0100) ---------------------------------------------------------------- TEE shared memory update for 7.0 Remove refcounting of kernel pages in register_shm_helper() to support slab allocations. ---------------------------------------------------------------- Matthew Wilcox (1): tee: shm: Remove refcounting of kernel pages drivers/tee/tee_shm.c | 27 --------------------------- 1 file changed, 27 deletions(-)

5 days, 20 hours

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OP-TEE Contributions Forum, monthly meeting March 24

by Jens Wiklander

Hi, Tomorrow, Tuesday, it's time for another LOC monthly meeting. For time and connection details, see the calendar at https://www.trustedfirmware.org/meetings/ - OP-TEE version 4.10.0 to be released April 17 - Marco Felsch is working on initial Kconfig support: https://github.com/OP-TEE/optee_os/pull/7714 + How to configure? Vanilla "make defconfig" and friends? Should we support passing "CFG_XXX=y" on the command line for convenience? In a one-step or two-step operation? + Integration with the build git: Do we need a way to ensure the active configuration matches what the build git expects? + Is it possible to make a seamless transition (with no visible external changes) when building OP-TEE? If so, do we want it? Any other topics? Cheers, Jens

5 days, 22 hours

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OP-TEE March 2026