Changes in Kconfig

edd3183c - optee: add RPMB dependency

Mon, 02 Sep 2024 15:12:31 +0000

optee: add RPMB dependencyPrevent build error when CONFIG_RPMB=m and CONFIG_OPTEE=y by adding adependency to CONFIG_RPMB for CONFIG_OPTEE so the RPMB subsystem alwaysis reachable if configured. This means that CONFIG_OPTEE automaticallybecomes compiled as a module if CONFIG_RPMB is compiled as a module. IfCONFIG_RPMB isn't configured or is configured as built-in, CONFIG_OPTEEwill remain unchanged.Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202409021448.RSvcBPzt-lkp@intel.com/Fixes: f0c8431568ee ("optee: probe RPMB device using RPMB subsystem")Signed-off-by: Jens Wiklander Link: https://lore.kernel.org/r/20240902151231.3705204-2-jens.wiklander@linaro.orgSigned-off-by: Ulf Hansson List of files: /linux-6.15/drivers/tee/optee/Kconfig

50709576 - Documentation: Destage TEE subsystem documentation

Tue, 28 Nov 2023 07:23:52 +0000

Documentation: Destage TEE subsystem documentationAdd a separate documentation directory for TEE subsystem since it is astandalone subsystem which already offers devices consumed by multipledifferent subsystem drivers.Split overall TEE subsystem documentation modularly where:- The userspace API has been moved to Documentation/userspace-api/tee.rst.- The driver API has been moved to Documentation/driver-api/tee.rst.- The first module covers the overview of TEE subsystem.- The further modules are dedicated to different TEE implementations like: - OP-TEE - AMD-TEE - and so on for future TEE implementation support.Acked-by: Rijo Thomas Acked-by: Jens Wiklander Signed-off-by: Sumit Garg Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20231128072352.866859-1-sumit.garg@linaro.org List of files: /linux-6.15/drivers/tee/optee/Kconfig

f3040daa - tee: optee: Add SMC for loading OP-TEE image

Fri, 31 Mar 2023 18:35:47 +0000

tee: optee: Add SMC for loading OP-TEE imageAdds an SMC call that will pass an OP-TEE binary image to EL3 andinstruct it to load it as the BL32 payload. This works in conjunctionwith a feature added to Trusted Firmware for ARMv8 and abovearchitectures that supports this.The main purpose of this change is to facilitate updating the OP-TEEcomponent on devices via a rootfs change rather than having to do afirmware update. Further details are linked to in the Kconfig file.Signed-off-by: Jeffrey Kardatzke Reviewed-by: Sumit Garg Signed-off-by: Jeffrey Kardatzke Signed-off-by: Jens Wiklander List of files: /linux-6.15/drivers/tee/optee/Kconfig

d88e0493 - tee: simplify shm pool handling

Fri, 04 Feb 2022 09:33:53 +0000

tee: simplify shm pool handlingReplaces the shared memory pool based on two pools with a single pool.The alloc() function pointer in struct tee_shm_pool_ops gets anotherparameter, align. This makes it possible to make less than page alignedallocations from the optional reserved shared memory pool while stillmaking user space allocations page aligned. With in practice unchangedbehaviour using only a single pool for bookkeeping.The allocation algorithm in the static OP-TEE shared memory pool ischanged from best-fit to first-fit since only the latter supports analignment parameter. The best-fit algorithm was previously the defaultchoice and not a conscious one.The optee and amdtee drivers are updated as needed to work with thischanged pool handling.This also removes OPTEE_SHM_NUM_PRIV_PAGES which becomes obsolete withthis change as the private pages can be mixed with the payload pages.The OP-TEE driver changes minimum alignment for argument struct from 8bytes to 512 bytes. A typical OP-TEE private shm allocation is 224 bytes(argument struct with 6 parameters, needed for open session). So with analignment of 512 well waste a bit more than 50%. Before this we had asingle page reserved for this so worst case usage compared to that wouldbe 3 pages instead of 1 page. However, this worst case only occurs ifthere is a high pressure from multiple threads on secure world. All inall this should scale up and down better than fixed boundaries.Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander List of files: /linux-6.15/drivers/tee/optee/Kconfig

9e0caab8 - tee: optee: Fix compilation issue with nommu

Fri, 10 Jan 2020 12:28:07 +0000

tee: optee: Fix compilation issue with nommuThe optee driver uses specific page table types to verify if a memoryregion is normal. These types are not defined in nommu systems. Tryingto compile the driver in these systems results in a build error: linux/drivers/tee/optee/call.c: In function ‘is_normal_memory’: linux/drivers/tee/optee/call.c:533:26: error: ‘L_PTE_MT_MASK’ undeclared (first use in this function); did you mean ‘PREEMPT_MASK’? return (pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC; ^~~~~~~~~~~~~ PREEMPT_MASK linux/drivers/tee/optee/call.c:533:26: note: each undeclared identifier is reported only once for each function it appears in linux/drivers/tee/optee/call.c:533:44: error: ‘L_PTE_MT_WRITEALLOC’ undeclared (first use in this function) return (pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC; ^~~~~~~~~~~~~~~~~~~Make the optee driver depend on MMU to fix the compilation issue.Signed-off-by: Vincenzo Frascino [jw: update commit title]Signed-off-by: Jens Wiklander List of files: /linux-6.15/drivers/tee/optee/Kconfig

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tee/optee/Kconfig

3249527f - tee: optee: making OPTEE_SHM_NUM_PRIV_PAGES configurable via Kconfig

Fri, 08 Jun 2018 07:08:13 +0000

tee: optee: making OPTEE_SHM_NUM_PRIV_PAGES configurable via KconfigThis change adds KCONFIG option to set number of pages out ofwhole shared memory to be used for OP-TEE driver private datastructures.Signed-off-by: Sahil Malhotra [jw: fixing trivial merge conflict]Signed-off-by: Jens Wiklander List of files: /linux-6.15/drivers/tee/optee/Kconfig

4fb0a5eb - tee: add OP-TEE driver

Tue, 14 Apr 2015 12:33:20 +0000

tee: add OP-TEE driverAdds a OP-TEE driver which also can be compiled as a loadable module.* Targets ARM and ARM64* Supports using reserved memory from OP-TEE as shared memory* Probes OP-TEE version using SMCs* Accepts requests on privileged and unprivileged device* Uses OPTEE message protocol version 2 to communicate with secure worldAcked-by: Andreas Dannenberg Tested-by: Jerome Forissier (HiKey)Tested-by: Volodymyr Babchuk (RCAR H3)Tested-by: Scott Branden Reviewed-by: Javier González Signed-off-by: Jens Wiklander List of files: /linux-6.15/drivers/tee/optee/Kconfig