| Message ID | cover.1577423898.git.Rijo-john.Thomas@amd.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | TEE driver for AMD APUs | expand |
On Fri, Dec 27, 2019 at 10:53:59AM +0530, Rijo Thomas wrote: > This patch series introduces Trusted Execution Environment (TEE) driver > for AMD APU enabled systems. The TEE is a secure area of a processor which > ensures that sensitive data is stored, processed and protected in an > isolated and trusted environment. The AMD Secure Processor is a dedicated > processor which provides TEE to enable HW platform security. It offers > protection against software attacks generated in Rich Operating > System (Rich OS) such as Linux running on x86. The AMD-TEE Trusted OS > running on AMD Secure Processor allows loading and execution of security > sensitive applications called Trusted Applications (TAs). An example of > a TA would be a DRM (Digital Rights Management) TA written to enforce > content protection. > > Linux already provides a tee subsystem, which is described in [1]. The tee > subsystem provides a generic TEE ioctl interface which can be used by user > space to talk to a TEE driver. AMD-TEE driver registers with tee subsystem > and implements tee function callbacks in an AMD platform specific manner. > > The following TEE commands are recognized by AMD-TEE Trusted OS: > 1. TEE_CMD_ID_LOAD_TA : Load Trusted Application (TA) binary into TEE > environment > 2. TEE_CMD_ID_UNLOAD_TA : Unload TA binary from TEE environment > 3. TEE_CMD_ID_OPEN_SESSION : Open session with loaded TA > 4. TEE_CMD_ID_CLOSE_SESSION : Close session with loaded TA > 5. TEE_CMD_ID_INVOKE_CMD : Invoke a command with loaded TA > 6. TEE_CMD_ID_MAP_SHARED_MEM : Map shared memory > 7. TEE_CMD_ID_UNMAP_SHARED_MEM : Unmap shared memory > > Each command has its own payload format. The AMD-TEE driver creates a > command buffer payload for submission to AMD-TEE Trusted OS. The driver > uses the services of AMD Secure Processor driver to submit commands > to the Trusted OS. Further details can be found in [1]. > > This patch series is based on cryptodev-2.6 tree with base commit > c6d633a92749 (crypto: algapi - make unregistration functions return void). > > [1] https://www.kernel.org/doc/Documentation/tee.txt > > Rijo Thomas (4): > tee: allow compilation of tee subsystem for AMD CPUs > tee: add AMD-TEE driver > tee: amdtee: check TEE status during driver initialization > Documentation: tee: add AMD-TEE driver details > > Documentation/tee.txt | 81 ++++++ > drivers/crypto/ccp/tee-dev.c | 11 + > drivers/tee/Kconfig | 4 +- > drivers/tee/Makefile | 1 + > drivers/tee/amdtee/Kconfig | 8 + > drivers/tee/amdtee/Makefile | 5 + > drivers/tee/amdtee/amdtee_if.h | 183 +++++++++++++ > drivers/tee/amdtee/amdtee_private.h | 159 +++++++++++ > drivers/tee/amdtee/call.c | 373 ++++++++++++++++++++++++++ > drivers/tee/amdtee/core.c | 516 ++++++++++++++++++++++++++++++++++++ > drivers/tee/amdtee/shm_pool.c | 93 +++++++ > include/linux/psp-tee.h | 18 ++ > include/uapi/linux/tee.h | 1 + > 13 files changed, 1451 insertions(+), 2 deletions(-) > create mode 100644 drivers/tee/amdtee/Kconfig > create mode 100644 drivers/tee/amdtee/Makefile > create mode 100644 drivers/tee/amdtee/amdtee_if.h > create mode 100644 drivers/tee/amdtee/amdtee_private.h > create mode 100644 drivers/tee/amdtee/call.c > create mode 100644 drivers/tee/amdtee/core.c > create mode 100644 drivers/tee/amdtee/shm_pool.c All applied. Thanks.