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Commit 967c9cca authored by Jens Wiklander's avatar Jens Wiklander
Browse files

tee: generic TEE subsystem 



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: default avatarAndreas 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: default avatarScott Branden <scott.branden@broadcom.com>
Reviewed-by: default avatarJavier González <javier@javigon.com>
Signed-off-by: default avatarJens Wiklander <jens.wiklander@linaro.org>
parent c8bfafb1

Documentation/ioctl/ioctl-number.txt

+1 −0
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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@@ -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
+8 −0
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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).