tee: generic TEE subsystem (967c9cca) · Commits · 戴 / test

Initial patch for generic TEE subsystem. This subsystem provides: * Registration/un-registration of TEE drivers. * Shared memory between normal world and secure world. * Ioctl interface for interaction with user space. * Sysfs implementation_id of TEE driver A TEE (Trusted Execution Environment) driver is a driver that interfaces with a trusted OS running in some secure environment, for example, TrustZone on ARM cpus, or a separate secure co-processor etc. The TEE subsystem can serve a TEE driver for a Global Platform compliant TEE, but it's not limited to only Global Platform TEEs. This patch builds on other similar implementations trying to solve the same problem: * "optee_linuxdriver" by among others Jean-michel DELORME<jean-michel.delorme@st.com> and Emmanuel MICHEL <emmanuel.michel@st.com> * "Generic TrustZone Driver" by Javier González <javier@javigon.com> Acked-by:

Andreas Dannenberg <dannenberg@ti.com> Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (HiKey) Tested-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> (RCAR H3) Tested-by:

Scott Branden <scott.branden@broadcom.com> Reviewed-by:

Javier González <javier@javigon.com> Signed-off-by:

Jens Wiklander <jens.wiklander@linaro.org>

Documentation/ioctl/ioctl-number.txt

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Original line number	Diff line number	Diff line
		@@ -308,6 +308,7 @@ Code Seq#(hex) Include File Comments
		0xA3 80-8F Port ACL in development:
		<mailto:tlewis@mindspring.com>
		0xA3 90-9F linux/dtlk.h
		0xA4 00-1F uapi/linux/tee.h Generic TEE subsystem
		0xAA 00-3F linux/uapi/linux/userfaultfd.h
		0xAB 00-1F linux/nbd.h
		0xAC 00-1F linux/raw.h

MAINTAINERS

+7 −0

Original line number	Diff line number	Diff line
		@@ -11086,6 +11086,13 @@ F: drivers/hwtracing/stm/
		F: include/linux/stm.h
		F: include/uapi/linux/stm.h

		TEE SUBSYSTEM
		M: Jens Wiklander <jens.wiklander@linaro.org>
		S: Maintained
		F: include/linux/tee_drv.h
		F: include/uapi/linux/tee.h
		F: drivers/tee/

		THUNDERBOLT DRIVER
		M: Andreas Noever <andreas.noever@gmail.com>
		S: Maintained

drivers/Kconfig

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Original line number	Diff line number	Diff line
		@@ -204,4 +204,6 @@ source "drivers/fpga/Kconfig"

		source "drivers/fsi/Kconfig"

		source "drivers/tee/Kconfig"

		endmenu

drivers/Makefile

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Original line number	Diff line number	Diff line
		@@ -177,3 +177,4 @@ obj-$(CONFIG_ANDROID) += android/
		obj-$(CONFIG_NVMEM) += nvmem/
		obj-$(CONFIG_FPGA) += fpga/
		obj-$(CONFIG_FSI) += fsi/
		obj-$(CONFIG_TEE) += tee/

drivers/tee/Kconfig

0 → 100644

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		# Generic Trusted Execution Environment Configuration
		config TEE
		tristate "Trusted Execution Environment support"
		select DMA_SHARED_BUFFER
		select GENERIC_ALLOCATOR
		help
		This implements a generic interface towards a Trusted Execution
		Environment (TEE).

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