Commit d6e29083 authored Sep 11, 2025 by Amirreza Zarrabi Committed by Jens Wiklander Sep 15, 2025

tee: add Qualcomm TEE driver



Introduce qcomtee_object, which represents an object in both QTEE and
the kernel. QTEE clients can invoke an instance of qcomtee_object to
access QTEE services. If this invocation produces a new object in QTEE,
an instance of qcomtee_object will be returned.

Similarly, QTEE can request services from by issuing a callback
request, which invokes an instance of qcomtee_object.

Implement initial support for exporting qcomtee_object to userspace
and QTEE, enabling the invocation of objects hosted in QTEE and userspace
through the TEE subsystem.

Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Harshal Dev <quic_hdev@quicinc.com>
Acked-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
Signed-off-by: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

parent bd513930

MAINTAINERS

+6 −0

Original line number	Diff line number	Diff line
		@@ -20856,6 +20856,12 @@ F: Documentation/networking/device_drivers/cellular/qualcomm/rmnet.rst
		F: drivers/net/ethernet/qualcomm/rmnet/
		F: include/linux/if_rmnet.h

		QUALCOMM TEE (QCOMTEE) DRIVER
		M: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
		L: linux-arm-msm@vger.kernel.org
		S: Maintained
		F: drivers/tee/qcomtee/

		QUALCOMM TRUST ZONE MEMORY ALLOCATOR
		M: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
		L: linux-arm-msm@vger.kernel.org

drivers/tee/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -21,5 +21,6 @@ config TEE_DMABUF_HEAPS
		source "drivers/tee/optee/Kconfig"
		source "drivers/tee/amdtee/Kconfig"
		source "drivers/tee/tstee/Kconfig"
		source "drivers/tee/qcomtee/Kconfig"

		endif

drivers/tee/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -7,3 +7,4 @@ tee-objs += tee_shm_pool.o
		obj-$(CONFIG_OPTEE) += optee/
		obj-$(CONFIG_AMDTEE) += amdtee/
		obj-$(CONFIG_ARM_TSTEE) += tstee/
		obj-$(CONFIG_QCOMTEE) += qcomtee/

drivers/tee/qcomtee/Kconfig

0 → 100644

+12 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0-only
		# Qualcomm Trusted Execution Environment Configuration
		config QCOMTEE
		tristate "Qualcomm TEE Support"
		depends on !CPU_BIG_ENDIAN
		select QCOM_SCM
		select QCOM_TZMEM_MODE_SHMBRIDGE
		help
		This option enables the Qualcomm Trusted Execution Environment (QTEE)
		driver. It provides an API to access services offered by QTEE and
		its loaded Trusted Applications (TAs). Additionally, it facilitates
		the export of userspace services provided by supplicants to QTEE.

drivers/tee/qcomtee/Makefile

0 → 100644

+7 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0-only
		obj-$(CONFIG_QCOMTEE) += qcomtee.o
		qcomtee-objs += async.o
		qcomtee-objs += call.o
		qcomtee-objs += core.o
		qcomtee-objs += shm.o
		qcomtee-objs += user_obj.o