- TF-M - lists.trustedfirmware.org

FW: [Tf-openci-triage] [Maintenance] - ci.staging.trustedfirmware.org down time 2022-07-22

by Xinyu Zhang

Hi All, FYI. Open CI will be down from 2022 07-22 18:00 UTC to 2022-07-22 22:00 UTC for Jenkins upgrade. Please let us know if there is any problem. Thanks Xinyu -----Original Message----- From: Kelley Spoon via Tf-openci-triage <tf-openci-triage(a)lists.trustedfirmware.org> Sent: Thursday, July 21, 2022 10:14 PM To: tf-openci(a)lists.trustedfirmware.org; tf-openci-triage(a)lists.trustedfirmware.org Subject: [Tf-openci-triage] [Maintenance] - ci.staging.trustedfirmware.org down time 2022-07-22 Hello All, The server will be offline to start a maintenance window on 2022-07-22 at 20:00 UTC. Jenkins will be put into "Shutdown Mode" at 2022-07-22 18:00 UTC to stop accepting new jobs and allow executing tasks to complete. This downtime is required to add a plugin to Jenkins to support new functionality required for a service being developed. The version of Jenkins and the plugins currently being run will not be changing. Emails will be sent prior to and following the upgrade to provide status reports. Start: 2022 07-22 18:00 UTC End: 2022-07-22 22:00 UTC Regards, -- Kelley Spoon <kelley.spoon(a)linaro.org> -- Tf-openci-triage mailing list -- tf-openci-triage(a)lists.trustedfirmware.org To unsubscribe send an email to tf-openci-triage-leave(a)lists.trustedfirmware.org

2 years, 5 months

1
0
0 0

ns_agent flag

by Chris.Brand＠infineon.com

In https://lists.trustedfirmware.org/archives/list/tf-m@lists.trustedfirmware.… Ken mentions the need for a special flag in the manifest to indicate a non-secure agent partition. The code change is fairly easy, I think, but the manifest file format is specified by PSA, and presumably would also need to change. How do we go about doing that? Thanks, Chris Brand Cypress Semiconductor (Canada), Inc. An Infineon Technologies Company Sr Prin Software Engr CSCA CSS ICW SW PSW 1 Office: +1 778 234 0515 Chris.Brand(a)infineon.com<mailto:Chris.Brand@infineon.com> International Place 13700 V6V 2X8 Richmond Canada www.infineon.com<www.cypress.com> www.cypress.com<http://www.cypress.com> Discoveries<http://www.infineon.com/discoveries> Facebook<http://www.facebook.com/infineon> Twitter<http://www.twitter.com/Infineon> LinkedIn<http://www.linkedin.com/company/infineon-technologies> Part of your life. Part of tomorrow. NOTICE: The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material of Infineon Technologies AG and its affiliated entities which is for the exclusive use of the individual designated above as the recipient. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact immediately the sender by returning e-mail and delete the material from any computer. If you are not the specified recipient, you are hereby notified that all disclosure, reproduction, distribution or action taken on the basis of this message is prohibited.

2 years, 5 months

2
1
0 0

Last call for comments on patch 15362

by Chris.Brand＠infineon.com

Hi, We'd like to merge https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/15362 which makes a small modification to all platform configs (TFM_CONFIG_USE_TRUSTZONE and TFM_MULTI_CORE_TOPOLOGY lose their default values and must be specified for every platform). Chris Brand Cypress Semiconductor (Canada), Inc. An Infineon Technologies Company Sr Prin Software Engr CSCA CSS ICW SW PSW 1 Office: +1 778 234 0515 Chris.Brand(a)infineon.com<mailto:Chris.Brand@infineon.com> International Place 13700 V6V 2X8 Richmond Canada www.infineon.com<www.cypress.com> www.cypress.com<http://www.cypress.com> Discoveries<http://www.infineon.com/discoveries> Facebook<http://www.facebook.com/infineon> Twitter<http://www.twitter.com/Infineon> LinkedIn<http://www.linkedin.com/company/infineon-technologies> Part of your life. Part of tomorrow. NOTICE: The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material of Infineon Technologies AG and its affiliated entities which is for the exclusive use of the individual designated above as the recipient. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact immediately the sender by returning e-mail and delete the material from any computer. If you are not the specified recipient, you are hereby notified that all disclosure, reproduction, distribution or action taken on the basis of this message is prohibited.

2 years, 5 months

1
0
0 0

Re: [TF-A] Re: Rebooting LTS discussion

by Varun Wadekar

Hi Everyone, We presented a proposal at the Tech Forum yesterday to take the LTS idea forward. The recording link and password are provided below. This effort is important for the project, and we don't want to rush into something that is not useful. With holidays and other engagements, we want to provide more time to digest the information and provide feedback. We will schedule another Tech forum discussion in September to hear feedback/concerns/questions. See you soon! -Varun Recording: https://linaro-org.zoom.us/rec/share/wYFz4jQvpLZntYSamyjc5-n_bGNcx_RFm-amEd… Passcode: NUx82^W= From: Joanna Farley <Joanna.Farley(a)arm.com> Sent: Wednesday, 22 June 2022 3:05 PM To: Varun Wadekar <vwadekar(a)nvidia.com>; Okash Khawaja <okash(a)google.com> Cc: Matteo Carlini <Matteo.Carlini(a)arm.com>; tf-a(a)lists.trustedfirmware.org Subject: Re: [TF-A] Re: Rebooting LTS discussion External email: Use caution opening links or attachments Hi Everyone, I learnt today that our peer project (TF-M) are having a similar LTS discussion and have their own LTS Tech forum session tomorrow. Its an 8am BST(GMT+1) meeting start but I'm told the LTS discussion is mid agenda so expect the discussion on that to start around 8:30am. I'm told it's an information gathering session rather than a proposal session. Anyway the Zoom id of the call is below. These are recorded like TF-A sessions and will be uploaded to their Techforum page. Joanna This event has been changed with this note: "Extending end date" TF-M Tech forum When Changed: Every 4 weeks from 12am to 1am on Thursday Mountain Standard Time - Phoenix Where https://linaro-org.zoom.us/j/92535794925?pwd=TTl0cmo4R2hTNm8wcHo1M3ZKdjlnUT…<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flinaro-or…> (map<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.googl…>) Calendar anton.komlev(a)arm.com<mailto:anton.komlev@arm.com> Who * Don Harbin - creator * tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org> * anton.komlev(a)arm.com<mailto:anton.komlev@arm.com> * leonardo.sandoval(a)linaro.org<mailto:leonardo.sandoval@linaro.org> * abdelmalek.omar1(a)gmail.com<mailto:abdelmalek.omar1@gmail.com> more details ><https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcalendar.…> About TF-M Tech forum: This is an open forum for anyone to participate and it is not restricted to Trusted Firmware project members. It will operate under the guidance of the TF TSC. Feel free to forward it to colleagues. Details of previous meetings are here: https://www.trustedfirmware.org/meetings/tf-m-technical-forum/<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.googl…> ====Zoom==== Topic: TF-M Tech forum - Asia Time Zone Friendly Time: Nov 12, 2020 07:00 AM Greenwich Mean Time Every 4 weeks on Thu, until Mar 4, 2021, 5 occurrence(s) Nov 12, 2020 07:00 AM Dec 10, 2020 07:00 AM Jan 7, 2021 07:00 AM Feb 4, 2021 07:00 AM Mar 4, 2021 07:00 AM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://linaro-org.zoom.us/meeting/tJYodOyvpz8jGNEc_1ykVap8Zg6oTLqZZSeJ/ics…<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.googl…> Join Zoom Meeting https://linaro-org.zoom.us/j/92535794925?pwd=TTl0cmo4R2hTNm8wcHo1M3ZKdjlnUT…<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.googl…> Meeting ID: 925 3579 4925 Passcode: 414410 One tap mobile +12532158782,,92535794925# US (Tacoma) +13462487799,,92535794925# US (Houston) Dial by your location +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 646 558 8656 US (New York) 888 788 0099 US Toll-free 877 853 5247 US Toll-free Meeting ID: 925 3579 4925 Find your local number: https://linaro-org.zoom.us/u/aesS64I7GW<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.googl…> Going (anton.komlev(a)arm.com<mailto:anton.komlev@arm.com>)? All events in this series: Yes<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcalendar.…> - Maybe<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcalendar.…> - No<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcalendar.…> more options ><https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcalendar.…> Invitation from Google Calendar<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcalendar.…> You are receiving this courtesy email at the account anton.komlev(a)arm.com<mailto:anton.komlev@arm.com> because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively you can sign up for a Google account at https://calendar.google.com/calendar/<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcalendar.…> and control your notification settings for your entire calendar. Forwarding this invitation could allow any recipient to send a response to the organizer and be added to the guest list, or invite others regardless of their own invitation status, or to modify your RSVP. Learn More<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsupport.g…>. From: Joanna Farley <Joanna.Farley(a)arm.com<mailto:Joanna.Farley@arm.com>> Date: Tuesday, 21 June 2022 at 18:11 To: Varun Wadekar <vwadekar(a)nvidia.com<mailto:vwadekar@nvidia.com>>, Okash Khawaja <okash(a)google.com<mailto:okash@google.com>> Cc: Matteo Carlini <Matteo.Carlini(a)arm.com<mailto:Matteo.Carlini@arm.com>>, tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org> <tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org>> Subject: Re: [TF-A] Re: Rebooting LTS discussion Thanks Varun and Okash. I'll update Jul 14th invite and add LTS as the discussion area. From: Varun Wadekar <vwadekar(a)nvidia.com<mailto:vwadekar@nvidia.com>> Date: Tuesday, 21 June 2022 at 17:24 To: Joanna Farley <Joanna.Farley(a)arm.com<mailto:Joanna.Farley@arm.com>>, Okash Khawaja <okash(a)google.com<mailto:okash@google.com>> Cc: Matteo Carlini <Matteo.Carlini(a)arm.com<mailto:Matteo.Carlini@arm.com>>, tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org> <tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org>> Subject: RE: [TF-A] Re: Rebooting LTS discussion Hi Joanna, Thanks for the update. Okash and I would be ready by July 14. We will prepare the slides for the session. -Varun From: Joanna Farley <Joanna.Farley(a)arm.com<mailto:Joanna.Farley@arm.com>> Sent: Tuesday, 21 June 2022 5:07 PM To: Okash Khawaja <okash(a)google.com<mailto:okash@google.com>>; Varun Wadekar <vwadekar(a)nvidia.com<mailto:vwadekar@nvidia.com>> Cc: Matteo Carlini <Matteo.Carlini(a)arm.com<mailto:Matteo.Carlini@arm.com>>; tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org> Subject: Re: [TF-A] Re: Rebooting LTS discussion External email: Use caution opening links or attachments Okash, Varun, Any thoughts when you want to do a LTS TechForum session. 30th June is now taken and the next scheduled one after that is 14th July. We could try and do a special one on 7th July if that's better. I'm reliant on you guys to jointly prepare and present a LTS TF-A Tech forum session Joanna From: Joanna Farley via TF-A <tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org>> Date: Monday, 6 June 2022 at 13:47 To: Okash Khawaja <okash(a)google.com<mailto:okash@google.com>> Cc: Matteo Carlini <Matteo.Carlini(a)arm.com<mailto:Matteo.Carlini@arm.com>>, tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org> <tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org>> Subject: [TF-A] Re: Rebooting LTS discussion Hi Okash, The next session after next week is Thursday 30th June at 4pm BST. This is also available with nothing currently scheduled. Joanna From: Okash Khawaja <okash(a)google.com<mailto:okash@google.com>> Date: Monday, 6 June 2022 at 13:34 To: Joanna Farley <Joanna.Farley(a)arm.com<mailto:Joanna.Farley@arm.com>> Cc: Varun Wadekar <vwadekar(a)nvidia.com<mailto:vwadekar@nvidia.com>>, Matteo Carlini <Matteo.Carlini(a)arm.com<mailto:Matteo.Carlini@arm.com>>, tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org> <tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org>> Subject: Re: [TF-A] Re: Rebooting LTS discussion Hi Joanna and Varun, Sounds good to me. I will be out of country during next week. After that should be fine. Thanks, Okash On Mon, Jun 6, 2022 at 12:13 PM Joanna Farley <Joanna.Farley(a)arm.com<mailto:Joanna.Farley@arm.com>> wrote: Varun, Okash, I believe the two of you have some interest in the LTS topic. Would the two of you be willing to jointly prepare and present a TF-A Tech forum session? The next available session is Thursday 16th June at 4pm BST. I'm sure there are many definitions of what a LTS release branch is in terms of purpose, content, duration etc. I would expect many platform providers are doing this downstream today and I could imagine there may be variations. Some degree of consensus on how this is managed and resourced would be needed I believe between multiple platform providers who would want to consume this. It would be good to see issues raised for discussion. I'm happy to host if the two of you and any other platform providers interested can prepare a TF-A session to present to the broader TF-A community. Thanks Joanna From: Varun Wadekar via TF-A <tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org>> Date: Tuesday, 31 May 2022 at 15:23 To: Matteo Carlini <Matteo.Carlini(a)arm.com<mailto:Matteo.Carlini@arm.com>>, Okash Khawaja <okash(a)google.com<mailto:okash@google.com>>, tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org> <tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org>> Subject: [TF-A] Re: Rebooting LTS discussion Hi Matteo/Okash, Thanks for re-starting the discussion. We (NVIDIA) are still interested in the idea and would like to discuss the next steps. I like the idea of a hotfix release, although would propose back-porting fixes to more tags. A targeted tech forum or another mechanism works for me. I would like to discuss the scope of the activity and the engagement model. -Varun -----Original Message----- From: Matteo Carlini <Matteo.Carlini(a)arm.com<mailto:Matteo.Carlini@arm.com>> Sent: Tuesday, 17 May 2022 3:39 PM To: Okash Khawaja <okash(a)google.com<mailto:okash@google.com>>; tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org> Cc: Varun Wadekar <vwadekar(a)nvidia.com<mailto:vwadekar@nvidia.com>>; raghu.ncstate(a)icloud.com<mailto:raghu.ncstate@icloud.com> Subject: RE: [TF-A] Rebooting LTS discussion External email: Use caution opening links or attachments Hi Okash, Thanks for rebooting the conversation. Out of the brainstorming from 1.5 yrs ago, we had this page published with an initial RFC proposal for LTSs: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdeveloper…<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdeveloper…> Worth mentioning that, in the meanwhile, the TF-M project has introduced the concept of Hotfix releases (which is a very lightweight process for backporting critical bug fix/security fixes only to the last available tagged release): https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftf-m-user…<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftf-m-user…> I'm curious to hear others' opinion and interest (@Varun, @Raghu ?) to possibly revive this topic in either in a Tech Forum or at a project TSC/Board level. Thanks Matteo -- TF-A mailing list -- tf-a(a)lists.trustedfirmware.org<mailto:tf-a@lists.trustedfirmware.org> To unsubscribe send an email to tf-a-leave(a)lists.trustedfirmware.org<mailto:tf-a-leave@lists.trustedfirmware.org>

2 years, 5 months

2
1
0 0

Partition priority questions

by Bohdan.Hunko＠infineon.com

Hi everyone, TFM manifest files allow to specify priority for the partition. FFM 1.0 and FFM 1.1 specify that there are 3 possible values for this field: Low, NORMAL, HIGH. This field is used in several template files to generate needed for SPM information. From what I see there are several problems with current implementation: 1. In secure_fw/spm/cmsis_func/tfm_spm_db_func.inc.template priority field is used to generate .partition_priority filed of spm_partition_static_data_t structure. It uses TFM_PRIORITY() macro to convert priority to numeric value. The problem is that this field is actually never used, instead all priority checking is done using .flags field of partition_{{manifest.name|lower}}_load_info_t structure (tools/templates/partition_load_info.template file). 2. .flags field uses PARTITION_PRI_ macro to convert priority to numeric value. Possible values for TFM_PRIORITY() are: LOW, NORMAL, HIGH, but PARTITION_PRI_ macro has: LOWES, LOW, NORMAL, HIGH, HIGHEST priorities. More over priorities with same names for these 2 macros have different numeric values (e.g. PARTITION_PRI_LOW is 0x7F while TFM_PRIORITY_LOW is 0xFF) 3. Scatter files does not account for HIGHEST priority (see code here<https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/platform/e…>). This is a problem for all toolchains including both common scatter files (L1 and L2) and scatter files templates for L3 So I have several questions on this topic: 1. Are LOWEST and HIGHEST priorities system reserved? Because for now they cant be used in manifest files as TFM_PRIORITY() does not have support them. 2. Should TFM_PRIORITY() macro and .partition_priority filed of spm_partition_static_data_t structure be removed? This will mean that if LOWEST and HIGHEST priorities are system reserved then validation of value for "priority" manifest field should be added to tfm_parse_manifest_list.py 3. Should scatter files be fixed to account for HIGHEST priority? 4. secure_fw/partitions/ns_agent_tz/load_info_ns_agent_tz.c for NS agent TZ specifies (PARTITION_PRI_LOWEST - 1) for a .flags filed. Higher priority numeric values is lower real priority, which means that TZ NS agent partition priority is between LOW and LOWEST priority. This seems like a hack to me, maybe we should introduce One more named priority? 5. In secure_fw/partitions/CMakeLists.txt idle partition is included when IPC backend is used. Idle partition is used to retrigger scheduling before going into WFI state (just to be sure that higher priority partitions were executed and there is not pending request). I can see how this partition is useful for MULTICORE case, to have kind of sleep state. But for TZ case TZ ns agent is always RUNNABLE and have higher priority that IDLE partition so it does not look like IDLE partition will ever be scheduled in TZ case. In such case condition in this Cmake file should be changed from "if (CONFIG_TFM_SPM_BACKEND_IPC)" to "if (TFM_PARTITION_NS_AGENT_MAILBOX)" Am I wrong somewhere? Sorry, I know that is a lot of questions, but this scheduling stuff is really hard to wrap a head around. 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, 5 months

2
2
0 0

PSA arch test problem

by Bohdan.Hunko＠infineon.com

Hi, Lately I have been working with PSA arch tests and found few issues with them: 1. PSA arch tests build on Windows fails. I am using the following command: cmake -S . -B build_gcc_psoc64 -G"Unix Makefiles" -DTFM_PLATFORM=cypress/psoc64 -DTEST_PSA_API=INITIAL_ATTESTATION This is true for all the compilers and build types. I have also tried building Musca B1 and the results are the same. Is this expected behavior? Are PSA arch test meant to be built on windows? 2. I have tried building PSA arch tests with IAR on both Linux and Windows and it does not work. From quick investigation it looks like IAR is not supported. Am I right? And if so the is there a plan to support PSA arch tests for IAR compiler? 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, 5 months

6
15
0 0

Proposal for Musca-B1 SE deprecation

by Anton Komlev

Hello, We would like to propose removing the Musca-B1 Secure Enclave platform configuration* in TF-M. This solution was developed to demonstrate the PSA Configuration to support the TF-M Secure Services on Secure Enclave providing Secure Services to the Host processor running non-secure application. Musca-B1 SE was the foundation of the Corstone-1000** solution, which provides a secure enclave implementation that is also PSA L2 Ready Certified. Please reply if there are any concerns deprecating and removing the Musca-B1 SE configuration from TF-M . Process for deprecation and removal of platforms can be found here https://tf-m-user-guide.trustedfirmware.org/platform/ext/platform_deprecati… * https://tf-m-user-guide.trustedfirmware.org/platform/ext/target/arm/musca_b… ** https://tf-m-user-guide.trustedfirmware.org/platform/ext/target/arm/corston… Thanks, Anton

2 years, 5 months

1
1
0 0

Manifest files questions

by Bohdan.Hunko＠infineon.com

Hi everyone, I have several questions related to manifest files in TFM: 1. Currently TFM dos not support dynamic memory allocation, so heap_size manifest field is a bit special. Presence of heap_size field for library model will generate error in tfm_spm_db_func.inc.template but when TFM_PSA_API is ON heap_size is used in partition_load_info.template which will silently set .heap_size struct field to 0 without generation of any error. As dynamic memory allocation is not supported I think error should be generated in both files. Also I think that error should only be generated if heap_size filed is present and is not "0" (if it is not present or is 0 then no error should be generated because it is compliant with "no dynamic memory rule") 2. Manifest files support numbered mmio regions for partitions. Example "mmio_regions": [ { "base": "MY_CUSTOM_REGION_BASE", "size": "MY_CUSTOM_REGION_SIZE", "permission": "READ-WRITE" } ] The questions is why doesn't TFM use this field for ITS and PS areas instead of handling them manually? Can this be reworked to use mmio regions? If so then is this work planned and when approximately it will be done? 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, 5 months

2
1
0 0

Library fetching improvements

by Bohdan.Hunko＠infineon.com

Hi, Recently I have been adding some new libraries to my TFM project and what I always end up doing is: go to some existing file which fetches the library, copy code from there, paste it to my file, change few links, versions and names. It is a bit annoying to copy-paste that code each time, also it is hard to maintain (if pattern for fetching libraries changes) and also copy pasting might lead to some code not being updated. My proposal is to have a function that can be used to fetch a library. This way it will be easier to add new libraries and this change will make code cleaner. Please let me know your thoughts on this proposal. 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, 5 months

5
8
0 0

Automatically copy RAM_VECTORS when using ARMClang and IAR

by Bohdan.Hunko＠infineon.com

Hi, When poking around some startup files I have found interesting place related to RAM_VECTORS support CMSIS have __PROGRAM_START macro which is different for each compiler. For GCC it uses __cmsis_start, for ARMClang - __main and for IAR - __iar_program_start Basically each of the functions should copy several sections (.TFM_DATA for example) from FLASH to RAM and zero out some parts of RAM (for .TFM_BSS for example) In current implementation GCC __cmsis_start function also copies the vector table from FLASH to SRAM (if RAM_VECTORS are enabled) But ARMClang and IAR equivalents of that function (__main, __iar_program_start) does not seem to take care of copying vector table, so platforms startup should do that I wonder if there is a way to change linker script in a way which will make copying of vector table automatic (by compiler dependent function). This will make platform startups a bit cleaner and will allow platform to just use __PROGRAM_START macro without any additional code to copy vector table. From what I see IAR has "initialize by copy" syntaxis so I think it may be used to tell IAR to automatically copy vector table. It is a bit more tricky with ARMClang as I have not found a way to do that there. I am not a big expert in ARMClang and IAR so maybe someone may help me here, give some directions or confirm that currently there is no way to make this idea work. Basically the intention is to simplify platform startup code and offload common operations to compiler specific platform independent functions. 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, 5 months

2
5
0 0

2024

2023

2022

2021

2020

2019

2018

TF-M