October 2022 - TF-M - lists.trustedfirmware.org

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 day, 13 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

1 year

10
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Re: Attestation token new spec

by Tamas Ban

Hi, Sorry 2nd link was broken. Here is the working version: https://www.ietf.org/archive/id/draft-tschofenig-rats-psa-token-09.html#tab… Tamas Ban From: Andersson, Joakim <Joakim.Andersson(a)nordicsemi.no> Sent: 2022. május 9., hétfő 12:14 To: Tamas Ban <Tamas.Ban(a)arm.com> Subject: RE: Attestation token new spec Is te second link broken? I get a 404 error code. -Joakim From: Tamas Ban via TF-M <tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>> Sent: mandag 9. mai 2022 11:31 To: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org> Cc: nd <nd(a)arm.com<mailto:nd@arm.com>> Subject: [TF-M] Attestation token new spec Hi, the initial attestation token implementation is aligned with this specification: https://datatracker.ietf.org/doc/html/draft-tschofenig-rats-psa-token-05<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatrack…> This spec is still evolving and there is a newer version which changes the key values of the claims in the token: https://www.ietf.org/archive/id/draft-tschofenig-rats-psa-token-09.html#tab…<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.…> This can cause combability issues between token issuer (device) and token verifier (some remote verification service). This is an ABI change between token issuer and consumer. The breaking effect would be manifest in unaccepted IAT tokens by the verifier. On-device side I see these options to make the transition: - A build-time option could be introduced which determines which range of key numbers to use. The default value would be the new range. To not let new users pick up the old values accidentally. Existing users can notice the incompatibility issue during the integration test and adjust their build command accordingly. However, the old range would be announced as deprecated in the next TF-M release, then will be removed in the next release after. - Immediate switch over to the new range, without supporting the old range anymore. On the verification service side, an SW update can handle the transition and might be accepting both ranges for a while. I assume the verification service can be updated more easily than remote devices therefore better to handle the compatibility issue there. - Keeping the support for both ranges for the long term and letting users choose by build time. Please share your thoughts on: - Are you aware that the attestation service is used in deployed devices where this transition can cause incompatibility? - From the above list which option would you vote to support the transition? Best regards, Tamas Ban

1 year, 6 months

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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 years, 1 month

4
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Trusted Firmware M build error on Windows 10

by Pocsai Ildiko LCPF-CH

Hello, I'm trying to build the Trusted Firmware M on Win10 x64 for NXP LPC55S69 using the IAR compiler, but I get the following error: [ 76%] Building C object secure_fw/CMakeFiles/tfm_s.dir/__/platform/ext/target/nxp/lpcxpresso55s69/Device/Source/startup_lpcxpresso55s69.o extern uint32_t __INITIAL_SP; ^ "C:\Work\TF-M\trusted-firmware-m\platform\ext\target\nxp\lpcxpresso55s69\Device\Source\startup_lpcxpresso55s69.c",29 Error[Pe007]: unrecognized token extern uint32_t __INITIAL_SP; ^ "C:\Work\TF-M\trusted-firmware-m\platform\ext\target\nxp\lpcxpresso55s69\Device\Source\startup_lpcxpresso55s69.c",29 Error[Pe065]: expected a ";" extern uint32_t __INITIAL_SP; ^ "C:\Work\TF-M\trusted-firmware-m\platform\ext\target\nxp\lpcxpresso55s69\Device\Source\startup_lpcxpresso55s69.c",29 Error[Pe007]: unrecognized token extern uint32_t __STACK_LIMIT; ^ "C:\Work\TF-M\trusted-firmware-m\platform\ext\target\nxp\lpcxpresso55s69\Device\Source\startup_lpcxpresso55s69.c",30 Error[Pe007]: unrecognized token extern uint32_t __STACK_LIMIT; ^ "C:\Work\TF-M\trusted-firmware-m\platform\ext\target\nxp\lpcxpresso55s69\Device\Source\startup_lpcxpresso55s69.c",30 Error[Pe065]: expected a ";" extern uint32_t __STACK_LIMIT; ^ "C:\Work\TF-M\trusted-firmware-m\platform\ext\target\nxp\lpcxpresso55s69\Device\Source\startup_lpcxpresso55s69.c",30 Error[Pe007]: unrecognized token (VECTOR_TABLE_Type)(&__INITIAL_SP), /* Initial Stack Pointer */ In the attachment, you can find the full build log and also the CMake build file generation log. Some details about my setup: Win10 Enterprise x64. Version 20H2 IAR ANSI C/C++ Compiler V8.50.9.278/W32 for ARM GNU Make 3.81 git version 2.36.0.windows.1 CMake 3.24.2 Python 3.10.5 I followed the steps from the Getting started guide here<https://tf-m-user-guide.trustedfirmware.org/getting_started/index.html> than the steps to build the framework for LPC55S69 here<https://tf-m-user-guide.trustedfirmware.org/platform/nxp/lpcxpresso55s69/RE…>. Do you have any idea what I'm missing? In case you need any further information let me please know. Thanks in advance. Kind regards, Ildikó Pocsai

2 years, 7 months

6
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Latest status of S/NS build split PoC

by David Hu

Hi all, I rebase and update the S/NS build split PoC as requests. Could you please take a look at the latest patch set if you are interested? Trusted-firmware-m part: https://review.trustedfirmware.org/q/project:TF-M%252Ftrusted-firmware-m+br… Tf-m-tests part: https://review.trustedfirmware.org/q/project:TF-M%252Ftf-m-tests+branch:mas… The general idea was presented in https://www.trustedfirmware.org/docs/tf-m_forum_20220120_Restructure_TF-M_b… while some details are improved in code. Any comment and feedback is welcome! Best regards, Hu Ziji

2 years, 8 months

1
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TFM_PARTITION_AUDIT_LOG references in the code after Lib Model deprecation

by Bohdan.Hunko＠infineon.com

Hi all, TFM Library model has been deprecated, thus AUDIT logging partition has been deleted, but I still see a reference to that partition in config/check_config.cmake lines 102-103: #Audit log is not supported in IPC model, disable it by default tfm_invalid_config(TFM_PARTITION_AUDIT_LOG) Looks like this should be removed or comment fixed. An I missing something or this is a mistake that should 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>

2 years, 8 months

3
2
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an521 L3 protection setting questions

by Bohdan.Hunko＠infineon.com

Hi all, I have a few questions regarding an521 platform protection settings for Level 3 isolation. In platform/ext/target/arm/mps2/an521/tfm_hal_isolation.c there is an const static struct mpu_armv8m_region_cfg_t region_cfg[] - for L3 it specifies to protect: * Code (from Image$$PT_RO_START$$Base to Image$$PT_RO_END$$Base) to be accessible in both PRIV and UNPRIV states. * PSA RoT partitions data in RAM (from Image$$PT_PRIV_RWZI_START$$Base to Image$$PT_PRIV_RWZI_END$$Base)to be accessible only in UNPRIV state. * TFM_SP_META_PTR to be accessible in both PRIV and UNPRIV states. Also in this file mpu_armv8m_enable() function call specifies PRIVILEGED_DEFAULT_ENABLE for MPU. I have following question to this configuration * Does this configuration mean that in L3 PSA RoT code is not isolated from APP RoT (APP RoT can read/execute PSA RoT domain code)? * How SPM data (TFM_BSS and TFM_DATA sections from scatter file) is protected? I cant see it being protected by MPU. * Is it skipped because PRIVILEGED_DEFAULT_ENABLE is set which means that SPM will be able to access this data and this allows to save one MPU region? * If so then why MPU region is used for PSA RoT partitions data? 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 years, 8 months

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[RFC]Library Model deprecation

by Summer Qin

Hi, We plan to merge Library Model deprecation patches<https://review.trustedfirmware.org/q/topic:%22library-model-deprecation%22+…> this Friday since some other development work depends on this. May I ask for a review on these patches? Best Regards, Summer

2 years, 8 months

2
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Open CI Infrastructure in Maintenance

by Xinyu Zhang

Hi, Open CI infrastructure is in an emergency maintenance. Tests will be impacted. I'll let you know once it is back to normal. Best Regards, Xinyu

2 years, 8 months

1
1
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TF-M October 2022