Tee-dev October 2017

tee-dev@lists.linaro.org

5 participants
5 discussions

[PATCH v1 00/14] tee: optee: add dynamic shared memory support

by Volodymyr Babchuk

From: Volodymyr Babchuk <vlad.babchuk(a)gmail.com> This patch series enables dynamic shared memory support in the TEE subsystem as a whole and in OP-TEE in particular. Global Platform TEE specification [1] allows client applications to register part of own memory as a shared buffer between application and TEE. This allows fast zero-copy communication between TEE and REE. But current implementation of TEE in Linux does not support this feature. Also, current implementation of OP-TEE transport uses fixed size pre-shared buffer for all communications with OP-TEE OS. This is okay in the most use cases. But this prevents use of OP-TEE in virtualized environments, because: a) We can't share the same buffer between different virtual machines b) Physically contiguous memory as seen by VM can be non-contiguous in reality (and as seen by OP-TEE OS) due to second stage of MMU translation. c) Size of this pre-shared buffer is limited. So, first part of this patch series adds generic register/unregister interface to tee subsystem. Next patches add necessary features into OP-TEE driver, so it can use not only static pre-shared buffer, but whole RAM to communicate with OP-TEE OS. [1] https://www.globalplatform.org/specificationsdevice.asp Jens Wiklander (2): tee: flexible shared memory pool creation tee: add register user memory Volodymyr Babchuk (12): tee: shm: add accessors for buffer size and page offset tee: shm: add page accessor functions tee: optee: Update protocol definitions tee: optee: add page list manipulation functions tee: optee: add shared buffer registration functions tee: optee: add registered shared parameters handling tee: optee: add registered buffers handling into RPC calls tee: optee: store OP-TEE capabilities in private data tee: optee: add optee-specific shared pool implementation tee: optee: enable dynamic SHM support tee: use reference counting for tee_context tee: shm: inline tee_shm getter functions drivers/tee/optee/Makefile | 1 + drivers/tee/optee/call.c | 131 +++++++++++++++++++++- drivers/tee/optee/core.c | 160 +++++++++++++++++++++------ drivers/tee/optee/optee_msg.h | 38 ++++++- drivers/tee/optee/optee_private.h | 26 ++++- drivers/tee/optee/optee_smc.h | 7 ++ drivers/tee/optee/rpc.c | 72 ++++++++++-- drivers/tee/optee/shm_pool.c | 75 +++++++++++++ drivers/tee/optee/shm_pool.h | 23 ++++ drivers/tee/tee_core.c | 81 ++++++++++++-- drivers/tee/tee_private.h | 60 +--------- drivers/tee/tee_shm.c | 226 +++++++++++++++++++++++++++++++------- drivers/tee/tee_shm_pool.c | 165 +++++++++++++++++----------- include/linux/tee_drv.h | 184 ++++++++++++++++++++++++++++++- include/uapi/linux/tee.h | 30 +++++ 15 files changed, 1058 insertions(+), 221 deletions(-) create mode 100644 drivers/tee/optee/shm_pool.c create mode 100644 drivers/tee/optee/shm_pool.h -- 2.7.4

6 years, 4 months

debugging heap issues in OP-TEE

by Stuart Yoder

All, I am facing an issue I need to debug where after running some number of TAs, the OP-TEE kernel is no longer able to malloc() memory and can no longer load a TA. So, there seems to be a leak of some kind I need to debug. I'm using a crypto accelerator, and so there is most likely a bug in my crypto driver. Is there any debug mechanism in OP-TEE I could use to get data or statistics about how much space is left on the heap? I've poked around some and don't see anything, but thought I would ask. Thanks, Stuart

6 years, 6 months

OP-TEE 2.6.0-rc1 is available for testing

by Jerome Forissier

Dear OP-TEE contributors and maintainers, We're getting close to releasing OP-TEE 2.6.0. I am pretty excited about this release, because it supports quite a few new platforms and introduces cool features. A big one, in my opinion, is dynamic shared memory [1] by Volodymyr Babchuk. In addition to being quite helpful technically, this contribution is remarkable because it was developed largely outside Linaro. I certainly hope we get more and more involvement from the community in the future. I have created release candidate tag 1 (2.6.0-rc1). Can you please help with the following? 1. Check the CHANGELOG, see pull request #1881 [2] 2. Test 2.6.0-rc1 on your favorite platform(s). Please use the change log pull request to report success (Tested-by:) or issues. To upgrade to 2.6.0-rc1 you need to checkout this tag in projects optee_os, optee_client and optee_test. Please note our linux kernel branch has been updated [3], it is now based on upstream 4.12. If your platform uses OP-TEE's Secure Data Path feature (CFG_SECURE_DATA_PATH=y), make sure you upgrade because ION has changed and xtest depends on this [4]. [1] https://github.com/OP-TEE/optee_os/commit/55d6853cb468 and https://github.com/OP-TEE/optee_os/commit/b05cd886e06d [2] https://github.com/OP-TEE/optee_os/pull/1881 [3] https://github.com/linaro-swg/linux/tree/optee [4] https://github.com/OP-TEE/optee_test/commit/8bc3142b3b2b Thanks for your help and support, -- Jerome OP-TEE Maintainer

6 years, 6 months

[PATCH v2] optee: toolchain: Support 32-bit host machine

by prasanna karthik

v2: -Change SRC_AARCH32_GCC unchanged -set AARCH32_GCC_VERSION to gcc-linaro-6.2.1-2016.11-i686_arm-linux-gnueabihf.tar.xz Support building optee on 32-bit Host Linux distribution Signed-off-by: Prasanna K Mutharaju <prasannakarthik(a)outlook.com> --- toolchain.mk | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/toolchain.mk b/toolchain.mk index 33c6dfb..e588f7c 100644 --- a/toolchain.mk +++ b/toolchain.mk @@ -4,9 +4,14 @@ ROOT ?= $(CURDIR)/.. TOOLCHAIN_ROOT ?= $(ROOT)/toolchains +LBITS := $(shell getconf LONG_BIT) AARCH32_PATH ?= $(TOOLCHAIN_ROOT)/aarch32 AARCH32_CROSS_COMPILE ?= $(AARCH32_PATH)/bin/arm-linux-gnueabihf- -AARCH32_GCC_VERSION ?= gcc-linaro-6.2.1-2016.11-x86_64_arm-linux-gnueabihf +ifeq ($(LBITS),64) + AARCH32_GCC_VERSION ?= gcc-linaro-6.2.1-2016.11-x86_64_arm-linux-gnueabihf +else + AARCH32_GCC_VERSION ?= gcc-linaro-6.2.1-2016.11-i686_arm-linux-gnueabihf +endif SRC_AARCH32_GCC ?= http://releases.linaro.org/components/toolchain/binaries/6.2-2016.11/arm-li… AARCH64_PATH ?= $(TOOLCHAIN_ROOT)/aarch64 -- 1.7.9.5

6 years, 6 months

[PATCH] optee: toolchain: Support 32-bit host machine

by prasanna karthik

Support building optee on 32-bit Host Linux distribution Signed-off-by: Prasanna K Mutharaju <prasannakarthik(a)outlook.com> --- toolchain.mk | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/toolchain.mk b/toolchain.mk index 33c6dfb..d77c2f2 100644 --- a/toolchain.mk +++ b/toolchain.mk @@ -4,10 +4,17 @@ ROOT ?= $(CURDIR)/.. TOOLCHAIN_ROOT ?= $(ROOT)/toolchains +LBITS := $(shell getconf LONG_BIT) AARCH32_PATH ?= $(TOOLCHAIN_ROOT)/aarch32 AARCH32_CROSS_COMPILE ?= $(AARCH32_PATH)/bin/arm-linux-gnueabihf- -AARCH32_GCC_VERSION ?= gcc-linaro-6.2.1-2016.11-x86_64_arm-linux-gnueabihf -SRC_AARCH32_GCC ?= http://releases.linaro.org/components/toolchain/binaries/6.2-2016.11/arm-li… + +ifeq ($(LBITS),64) + AARCH32_GCC_VERSION ?= gcc-linaro-6.2.1-2016.11-x86_64_arm-linux-gnueabihf + SRC_AARCH32_GCC ?= http://releases.linaro.org/components/toolchain/binaries/6.2-2016.11/arm-li… +else + AARCH32_GCC_VERSION ?= gcc-linaro-arm-linux-gnueabihf-4.9-2014.08_linux + SRC_AARCH32_GCC ?= http://releases.linaro.org/archive/14.08/components/toolchain/binaries/${AA… +endif AARCH64_PATH ?= $(TOOLCHAIN_ROOT)/aarch64 AARCH64_CROSS_COMPILE ?= $(AARCH64_PATH)/bin/aarch64-linux-gnu- -- 1.7.9.5

6 years, 6 months

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Tee-dev October 2017