April 2023 - TF-M - lists.trustedfirmware.org

by Bohdan.Hunko＠infineon.com

Hi all, Seems like dependency on generated files is broken. Steps to reproduce: 1. Build any platform at any mode 2. Change any .template file 3. Expected result: 1. New file is generated from the updated .template file Actual result: 1. Generated files step is skipped. My best guess will be that 1ce59292a47b1316e5d8b4d28bcaf9d8e2bdc0a5 broke it. Could this be fixed? Regards, Bohdan Hunko Cypress Semiconductor Ukraine Engineer CSUKR CSS ICW SW FW Mobile: +38099 50 19 714 Bohdan.Hunko(a)infineon.com<mailto:Bohdan.Hunko@infineon.com>

1 day, 11 hours

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Technical Forum call - July 7

by Anton Komlev

Hi, The next Technical Forum is planned on Thursday, July 7, 15:00-16:00 UTC (West time zone). Please reply on this email with your proposals for agenda topics. Link to the forum: https://linaro-org.zoom.us/j/95570795742?pwd=N21YWHJpUjZyS3Fzd0tkOG9hanpidz… Recording and slides of previous meetings are here: https://www.trustedfirmware.org/meetings/tf-m-technical-forum/ Best regards, Anton

3 days, 8 hours

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Technical Forum call - July 21

by Anton Komlev

Hi, The next Technical Forum is planned on Thursday, July 21, 7:00-8:00 UTC (East time zone). Please reply on this email with your proposals for agenda topics. Link to the forum: https://linaro-org.zoom.us/j/92535794925?pwd=TTl0cmo4R2hTNm8wcHo1M3ZKdjlnUT… Recording and slides of previous meetings are here: https://www.trustedfirmware.org/meetings/tf-m-technical-forum/ Best regards, Anton

1 week, 3 days

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psa_call performance

by Quach, Brian

Hi, Using isolation level 1 and IPC secure partition, I noticed psa_call() overhead for TFM v1.7 is significantly worse for than v1.1. Is this expected? Assuming 1 invec and 0 outvec for the PSA call.... TF-M version Psa_call() round trip cycles v1.1 4038 v1.7 6051 Regards, Brian Quach SimpleLink MCU Texas Instruments Inc.

2 weeks, 1 day

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Split build

by Bohdan.Hunko＠infineon.com

Hi everyone, Some time ago patch for split build<https://review.trustedfirmware.org/q/topic:%2522split-build%2522> of SPE, NSPE, BL2 was announced. I am interested on when this patch is planned to be merged? Regards, Bohdan Hunko Cypress Semiconductor Ukraine Engineer CSUKR CSS ICW SW FW Mobile: +38099 50 19 714 Bohdan.Hunko(a)infineon.com<mailto:Bohdan.Hunko@infineon.com>

2 weeks, 4 days

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TF-M release v1.8.0 announcement

by Anton Komlev

Hello, I am pleased to announce the release of TF-M v1.8.0<https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tag/?h=TF-Mv1.8…>. New major features are: * TF-M eRPC Test framework 1 is integrated. * TF-M builtin key loader integration is reworked. * Improved crypto library abstraction from TF-M Crypto service. * Kconfig system is enhanced and finalized. * Switch to upstream QCBOR 2. * Enable PSA Authenticated Debug Access Control (ADAC) 3 support on Musca-B1 platform. * Support Floating-Point (FP) with Arm Compiler. * FF-M API uses signals to drive the partition scheduling instead of controlling partition context directly. * MCUboot upgrade to v1.10.0. * Mbed TLS upgrade to v3.4.0. * Refine documentation restructure. * It is optional to update copyright year in changes. Requirements of copyright note update is updated in Contributing Process. Please check the release notes<https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/relea…> for more information. The release branch changes will be ported to the main branch shortly. Many thanks to everyone for contributing, reviewing and supporting this milestone. Anton

1 month

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SVC handlers refining

by Ken Liu

Hello, For isolation levels > 1, partitions need to SVC for PSA APIs. To improve the efficiency of this call type, the SVC handler needs to be simplified. Currently, there are several obvious places to be improved: - Handlers in C have multiple-level function calling; - There are a couple of checks in the handler routine that can be refined. And, to take advantage of instruction TBB, the switch/case number needs to be linear - but it is not always stable hence needs to investigate if a handmade function table would be more stable. The leading patches are here: https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/20644 Feel free to comment or reply in this thread. Thanks. /Ken

1 month, 1 week

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Adjustments for SVC number assignments that impact platforms with platform-specific SVC

by Kevin Peng

Hi, We're making some adjustments for the SVC number assignments. I'd like to collect some feedbacks, especially from downstream platforms that have your own SVC handler because corresponding changes of your SVC numbers are required when these changes were accepted. Originally, The SVC numbers are categorized by their values, for example, numbers less than 0x40 are PSA API requests and numbers larger than 0x80 are for handler mode. This is not convenient for adding new SVC because it's not intuitive to find a proper value range. More importantly, it's easy to create clashes between TF-M and platform SVC by mistake as they are defined in different files. So, we propose to divide the SVC number bits into different fields for distinguishing different types of SVC. Please see here<https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/20644/1/secu…> for the detailed descriptions. With these changes, it's much easier to put the SVC numbers in the right range and avoid duplications after setting the bit fields to right values. Thanks, Kevin

1 month, 1 week

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ITS cmake

by Quach, Brian

Is the highlighted line below correct? Or should the angle bracket be at the end like this: $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../protected_storage> target_include_directories(tfm_psa_rot_partition_its PRIVATE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}> ${CMAKE_BINARY_DIR}/generated/secure_fw/partitions/internal_trusted_storage PUBLIC # Required for ps_object_defs.h $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>/../protected_storage ) Regards, Brian Quach SimpleLink MCU Texas Instruments Inc. 12500 TI Blvd, MS F-4000 Dallas, TX 75243 214-479-4076

1 month, 1 week

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PSA Crypto platform specific extensions

by Roman.Mazurak＠infineon.com

Hello everyone, I need to extend PSA Crypto API by adding a platform specific encryption algorithm/key attribute. For example a vendor specific algorithm named ABC must be added. So, I need that following macro must be included when psa/crypto.h is included. #define PSA_ALG_ABC ((psa_algorithm_t) 0x08000123) TF-M provides PSA Crypto interface through includes located in interface/include/psa/crypto*.h. It means that we need to extend TF-M by allowing platform to provide some platform specific crypto header that will be installed in interface folder and included by psa/crypto.h. 1. Is there any activity related to this problem? 2. I'm considering to create a new crypto_config.h that must be generated during build process and which can optionally provide a macro TFM_PLATFORM_CRYPTO_EXTRA. These macro will be used in psa/crypto.h to conditionally include crypto_platform.h - header provided by platform. Thanks, Roman.

1 month, 2 weeks

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TF-M April 2023