kernel.git/drivers/tee/optee/core.c, branch linux-6.16.y

optee: probe RPMB device using RPMB subsystem

2024-08-26T11:16:20Z

Adds support in the OP-TEE drivers (both SMC and FF-A ABIs) to probe and use an RPMB device via the RPMB subsystem instead of passing the RPMB frames via tee-supplicant in user space. A fallback mechanism is kept to route RPMB frames via tee-supplicant if the RPMB subsystem isn't available. The OP-TEE RPC ABI is extended to support iterating over all RPMB devices until one is found with the expected RPMB key already programmed. Signed-off-by: Jens Wiklander Tested-by: Manuel Traut Reviewed-by: Sumit Garg Link: https://lore.kernel.org/r/20240814153558.708365-5-jens.wiklander@linaro.org Signed-off-by: Ulf Hansson

tee: optee: Move pool_op helper functions

2024-04-03T11:58:20Z

Move the pool alloc and free helper functions from the OP-TEE driver to the TEE subsystem, since these could be reused in other TEE drivers. This patch is not supposed to change behavior, it's only reorganizing the code. Reviewed-by: Sumit Garg Suggested-by: Jens Wiklander Signed-off-by: Balint Dobszay Signed-off-by: Jens Wiklander

tee: Refactor TEE subsystem header files

2024-04-03T07:19:31Z

Since commit 25559c22cef8 ("tee: add kernel internal client interface"), it has been a common include/linux/tee_drv.h header file which is shared to hold TEE subsystem internal bits along with the APIs exposed to the TEE client drivers. However, this practice is prone to TEE subsystem internal APIs abuse and especially so with the new TEE implementation drivers being added to reuse existing functionality. In order to address this split TEE subsystem internal bits as a separate header file: include/linux/tee_core.h which should be the one used by TEE implementation drivers. With that include/linux/tee_drv.h lists only APIs exposed by TEE subsystem to the TEE client drivers. Signed-off-by: Sumit Garg Signed-off-by: Balint Dobszay Signed-off-by: Jens Wiklander

Merge tag 'optee-cleanup-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee into soc/drivers

2023-12-22T11:37:09Z

OP-TEE cleanup - Remove a redundant custom workqueue in the OP-TEE driver. - Fix a missing description of an argument to optee_handle_rpc(). * tag 'optee-cleanup-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee: optee: add missing description of RPC argument reference tee: optee: Remove redundant custom workqueue tee: optee: Fix supplicant based device enumeration Link: https://lore.kernel.org/r/20231214132237.GA3092763@rayden Signed-off-by: Arnd Bergmann

Merge tag 'kern-priv-shm-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee into soc/drivers

2023-12-22T10:44:16Z

OP-TEE kernel private shared memory optimizations Optimize OP-TEE driver private shared memory allocated as dynamic shared memory. Both to handle larger than one page allocations and for more efficient memory usage. * tag 'kern-priv-shm-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee: optee: allocate shared memory with alloc_pages_exact() optee: add page list to kernel private shared memory Link: https://lore.kernel.org/r/20231211115815.GA616539@rayden Signed-off-by: Arnd Bergmann

optee: allocate shared memory with alloc_pages_exact()

2023-12-04T13:48:42Z

Allocate memory to share with the secure world using alloc_pages_exact() instead of alloc_pages() for more efficient memory usage. Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

optee: add page list to kernel private shared memory

2023-12-04T13:47:17Z

Until now has kernel private shared memory allocated as dynamic shared memory (not from the static shared memory pool) been returned without a list of physical pages on allocations via RPC. To support allocations larger than one page add a list of physical pages. Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

tee: optee: system thread call property

2023-11-17T14:48:03Z

Adds an argument to do_call_with_arg() handler to tell whether the call is a system thread call or not. This change always sets this info to false hence no functional change. This change prepares management of system invocation proposed in a later change. Reviewed-by: Sumit Garg Co-developed-by: Jens Wiklander Signed-off-by: Etienne Carriere [jw: clarified that it's system thread calls] Signed-off-by: Jens Wiklander

tee: optee: Remove redundant custom workqueue

2023-11-14T10:02:21Z

Global system workqueue is sufficient to suffice OP-TEE bus scanning work needs. So drop redundant usage of the custom workqueue. Tested-by: Jan Kiszka Tested-by: Masahisa Kojima Signed-off-by: Sumit Garg Signed-off-by: Jens Wiklander

optee: Add init/exit annotations to module init/exit funcs

2022-10-11T09:20:16Z

Add missing __init/__exit annotations to module init/exit funcs. Reviewed-by: Sumit Garg Signed-off-by: Xiu Jianfeng Signed-off-by: Jens Wiklander