- TF-M - lists.trustedfirmware.org

Re: [TF-M] Design proposal for HW crypto key integration in TF-M secure boot

by Tamas Ban

Hi, In case of no further comment on the proposal I'm planning to merge it by Monday. https://review.trustedfirmware.org/#/c/trusted-firmware-m/+/1453/ Tamas -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of Tamas Ban via TF-M Sent: 24 September 2019 10:22 To: tf-m(a)lists.trustedfirmware.org Cc: nd <nd(a)arm.com> Subject: Re: [TF-M] Design proposal for HW crypto key integration in TF-M secure boot Hi, The design proposal about the integration of TF-M secure bootloader (MCUBoot) with HW key(s) are close to finalize: https://review.trustedfirmware.org/#/c/trusted-firmware-m/+/1453/ If you are interested in the topic and have a comment / suggestion then please share it. Tamas From: Tamas Ban Sent: 03 July 2019 17:50 To: tf-m(a)lists.trustedfirmware.org Cc: nd <nd(a)arm.com> Subject: Design proposal for HW crypto key integration in TF-M secure boot Hi all, PSA Trusted Boot and Firmware Update specification requires the support of at least one immutable root of trust public key (ROTPK) for firmware verification. It is beneficial to be able to provision these keys during the factory life-cycle of the device independently from any software components. The current key handling solution in TF-M secure boot does not supports this key provisioning process. MCUBoot requires compile time built-in public key(s) for image verification. The following design proposal addressing this issue: https://review.trustedfirmware.org/#/c/trusted-firmware-m/+/1453/ Feel free to add any comments you want on the review! BR, Tamas -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m

7 years

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Re: [TF-M] Please enable -pedantic-errors for gcc builds

by Ken Liu (Arm Technology China)

Hi Thomas, We tried to enable the "-pedantic-errors" flags and finished some fix. Some of them mentioned in your last mail has been pushed, and updated at: https://developer.trustedfirmware.org/T475 The reason we do not enable it as default is that there some sources files from the external project, which causes inconvenience to enable this. Please help to review these patch to see if it is acceptable for the issue for now, after that we could find a chance to merge it. And we can enable this flag internally and create more patches to fix the tf-m native source in future. Thanks. /Ken -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of Ken Liu (Arm Technology China) via TF-M Sent: Saturday, August 17, 2019 5:48 PM To: tf-m(a)lists.trustedfirmware.org Cc: nd <nd(a)arm.com> Subject: Re: [TF-M] Please enable -pedantic-errors for gcc builds Hi Thomas, This is a very helpful suggestion. Since I am doing some cleanup these days, let me try this option and see how much we need to improve. I have created an task for tracking this: https://developer.trustedfirmware.org/T475 And, do you have an error report could be share? You can attch the log in the task if you do have some. Thanks. /Ken ________________________________ From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> on behalf of Thomas Törnblom via TF-M <tf-m(a)lists.trustedfirmware.org> Sent: Friday, August 16, 2019 4:24 PM To: tf-m(a)lists.trustedfirmware.org <tf-m(a)lists.trustedfirmware.org> Subject: [TF-M] Please enable -pedantic-errors for gcc builds I'm now looking at compilation issues with our standards compliant compiler, and I run into one issue after another that are due to the use of non-standard C allowed by gcc and armclang. Things like zero sized arrays, which are fairly easy to fix by making sure that they have at least one element, but there are other issues that may not be as easy to solve. The latest issue is illegal pointer arithmetic on void * in the IPC code. --- ... [ 20%] Building C object app/secure_fw/CMakeFiles/tfm_s_obj_lib.dir/core/ipc/tfm_svcalls.o msg->invec[invec_idx].base += bytes; ^ "C:\Users\thomasto\Projects\tf-m7\trusted-firmware-m\secure_fw\core\ipc\tfm_svcalls.c",595 Error[Pe852]: expression must be a pointer to a complete object type msg->invec[invec_idx].base += num_bytes; ^ "C:\Users\thomasto\Projects\tf-m7\trusted-firmware-m\secure_fw\core\ipc\tfm_svcalls.c",666 Error[Pe852]: expression must be a pointer to a complete object type tfm_memcpy(msg->outvec[outvec_idx].base + msg->outvec[outvec_idx].len, ^ "C:\Users\thomasto\Projects\tf-m7\trusted-firmware-m\secure_fw\core\ipc\tfm_svcalls.c",750 Error[Pe852]: expression must be a pointer to a complete object type ... --- I suggest enabling "-pedantic-errors" for gcc, and also for clang, if it has a similar setting, to avoid having illegal C code creeping into tf-m. Comments? /Thomas -- *Thomas Törnblom*, /Product Engineer/ IAR Systems AB Box 23051, Strandbodgatan 1 SE-750 23 Uppsala, SWEDEN Mobile: +46 76 180 17 80 Fax: +46 18 16 78 01 E-mail: thomas.tornblom(a)iar.com <mailto:thomas.tornblom@iar.com> Website: www.iar.com<http://www.iar.com> <http://www.iar.com> Twitter: www.twitter.com/iarsystems<http://www.twitter.com/iarsystems> <http://www.twitter.com/iarsystems> -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m

7 years

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T398/T413

by Thomas Törnblom

This is a notification of a patch I pushed yesterday. It consists of standard C source cleanup and initial toolchain support for IAR Embedded Workbench. The target is Musca A and I will provide further support for the psoc6 once the twincpu branch has been merged to master. The Musca A port is not yet fully functional but debugging is in progress. Thanks, /Thomas -- *Thomas Törnblom*, /Product Engineer/ IAR Systems AB Box 23051, Strandbodgatan 1 SE-750 23 Uppsala, SWEDEN Mobile: +46 76 180 17 80 Fax: +46 18 16 78 01 E-mail: thomas.tornblom(a)iar.com <mailto:thomas.tornblom@iar.com> Website: www.iar.com <http://www.iar.com> Twitter: www.twitter.com/iarsystems <http://www.twitter.com/iarsystems>

7 years

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Re: [TF-M] platform-specific hw initialization

by Ken Liu (Arm Technology China)

Hi Andrei, I have taken a look at give some tiny comment -- the idea is good for now since some extra platform initialization is needed. Thanks /Ken -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of Kevin Townsend via TF-M Sent: Friday, September 27, 2019 1:00 AM To: Andrei Narkevitch <Andrei.Narkevitch(a)cypress.com> Cc: tf-m(a)lists.trustedfirmware.org Subject: Re: [TF-M] platform-specific hw initialization Hi Andrei, This would solve a problem that we currently have with UART with Zephyr, and seems like a useful addition. Thanks for putting the change request together. Kevin On Thu, 26 Sep 2019 at 09:48, Andrei Narkevitch via TF-M <tf-m(a)lists.trustedfirmware.org> wrote: > > Hi All, > > We're proposing to add an API that would allow to implement a custom post-startup initialization of hw, peripherals etc. > Contrarily to SystemInit() intended for a high priority hw initialization (for example clock and power subsystems), and called on a very early boot stage from startup code, these functions are called from C code, hence variables and other drivers data are protected from being cleared up by the C library init. > https://review.trustedfirmware.org/c/trusted-firmware-m/+/1973 > > Ken and Mate, as maintainers of the TF-M core part, could you please take a look at the patch? > > Thanks, > Andrey Narkevitch > Cypress Semiconductor > > This message and any attachments may contain confidential information from Cypress or its subsidiaries. If it has been received in error, please advise the sender and immediately delete this message. > -- > TF-M mailing list > TF-M(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/tf-m -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m

7 years

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Re: [TF-M] platform-specific hw initialization

by Kevin Townsend

Hi Andrei, This would solve a problem that we currently have with UART with Zephyr, and seems like a useful addition. Thanks for putting the change request together. Kevin On Thu, 26 Sep 2019 at 09:48, Andrei Narkevitch via TF-M <tf-m(a)lists.trustedfirmware.org> wrote: > > Hi All, > > We're proposing to add an API that would allow to implement a custom post-startup initialization of hw, peripherals etc. > Contrarily to SystemInit() intended for a high priority hw initialization (for example clock and power subsystems), and called on a very early boot stage from startup code, these functions are called from C code, hence variables and other drivers data are protected from being cleared up by the C library init. > https://review.trustedfirmware.org/c/trusted-firmware-m/+/1973 > > Ken and Mate, as maintainers of the TF-M core part, could you please take a look at the patch? > > Thanks, > Andrey Narkevitch > Cypress Semiconductor > > This message and any attachments may contain confidential information from Cypress or its subsidiaries. If it has been received in error, please advise the sender and immediately delete this message. > -- > TF-M mailing list > TF-M(a)lists.trustedfirmware.org > https://lists.trustedfirmware.org/mailman/listinfo/tf-m

7 years

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platform-specific hw initialization

by Andrei Narkevitch

Hi All, We're proposing to add an API that would allow to implement a custom post-startup initialization of hw, peripherals etc. Contrarily to SystemInit() intended for a high priority hw initialization (for example clock and power subsystems), and called on a very early boot stage from startup code, these functions are called from C code, hence variables and other drivers data are protected from being cleared up by the C library init. https://review.trustedfirmware.org/c/trusted-firmware-m/+/1973 Ken and Mate, as maintainers of the TF-M core part, could you please take a look at the patch? Thanks, Andrey Narkevitch Cypress Semiconductor This message and any attachments may contain confidential information from Cypress or its subsidiaries. If it has been received in error, please advise the sender and immediately delete this message.

7 years

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Re: [TF-M] TF-M / CMSIS-Zone Alignment

by Robert Rostohar

Hi Mate, Thanks for the detailed explanation and confirmation that the SAU region number reference can be removed. This will enable using CMSIS-Zone to configure also TF-M in an easy way. I would appreciate if some can create a ticket to track progress. Thanks, Robert -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of Mate Toth-Pal via TF-M Sent: Thursday 26 September 2019 09:40 To: tf-m(a)lists.trustedfirmware.org Cc: nd <nd(a)arm.com> Subject: Re: [TF-M] TF-M / CMSIS-Zone Alignment Hi Robert, The region IDs in 'tfm_ns_region_e' are used for two purposes in TF-M (just as you mention in your mail): 1. For configuring the SAU. As far as I understood, with the CMSIS-Zone Utility it is possible to generate a 'tz_sau_nvic.c' file, which then can be added to the platform folder of a target in TF-M. The tfm_spm_hal_init_isolation_hw(...) hal function then can call the TZ_Config_SAU(...) function defined in 'tz_sau_nvic.c'. The TZ_Config_SAU(...) uses integer literals to address the different regions of the SAU, but that is OK for this purpose. 2. The tfm_core_memory_permission_check_handler(...) function The idea was that secure services would be able to query whether the caller NS client has access to a certain NS memory region. Implementing this feature would require TF-M core to know whether a region returned by cmse_check_address_range is a Non-Secure memory or not. With the current output of the CMSIS-Zone Utility I don't see this is possible other than looking into the config of the SAU region and check the content of the RLAR register. (Although this would only reveal whether the region is S/NS, code/data differentiation should be done in a different way) However this feature never got implemented, and this is only supported in Library model. Also after removing isolation level 3 from Library model I think there is no point in keeping this function. So the reference to the SAU regions from this function can be removed. So summarizing the above, I think there is no reason why CMSIS-Zone Utility could not be used in TF-M, and it seems that it could be integrated fairly easily. Regards, Mate -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of Robert Rostohar via TF-M Sent: 26 September 2019 09:27 To: Summer Qin (Arm Technology China) <Summer.Qin(a)arm.com> Cc: tf-m(a)lists.trustedfirmware.org Subject: Re: [TF-M] TF-M / CMSIS-Zone Alignment Hi Summer, Thanks for looking into this. Requesting a specific SAU region number for a specific memory region is an inconvenience for CMSIS-Zone. It introduces additional complexity for the user who would need to know and configure this and also for the tool to handle. Normally the user just configures the memory region (address, size, access. security, privilege, ...) and leaves to the tool to assign a region and generate the SAU setup code. Having the additional constrain (ex: NS_CODE needs to be assigned to RGN=0) is just another obstacle and source of error in user configuration of the memory layout for TF-M. I would help if TF-M would remove the constrain on specific region number assignments. Thanks, Robert -----Original Message----- From: Summer Qin (Arm Technology China) <Summer.Qin(a)arm.com> Sent: Thursday 26 September 2019 08:14 To: Robert Rostohar <Robert.Rostohar(a)arm.com>; tf-m(a)lists.trustedfirmware.org Subject: Re: [TF-M] TF-M / CMSIS-Zone Alignment Hi Robert, I think the static defined region number would be much for easier for implementation: First, we need to assign a Region Number together with RBAR and RLAR. Then, we could use the Region Number to stand for the region that is configured by the RBAR and RLAR. It is just like an ID for a block of the memory. Dose it causes some inconvenience for CMSIS-Zone? Regards, Summer On 9/13/19, 6:56 PM, "TF-M on behalf of Robert Rostohar via TF-M" <tf-m-bounces(a)lists.trustedfirmware.org on behalf of tf-m(a)lists.trustedfirmware.org> wrote: Hi, We are working on CMSIS-Zone Utility [1] which is a GUI tool for configuring a complex system. This includes also TrustZone setup (SAU) and device specific MPC and PPC. This tool can be also used to configure SAU, MPC and PPC in TF-M. However TF-M currently requires that a specific region number is used for NS_REGION_CODE (0), NS_REGION_DATA (1), ... Those region numbers are used when SAU is configured in function sau_and_idau_cfg and the code in function tfm_core_memory_permission_check_handler depends on it. Is it really necessary that a specific region number is being used and why? I have received indication that this in not really needed and that the code should be redesigned. This would enable the use of CMSIS-Zone to configure TF-M out of the box. Thanks, Robert [1] https://github.com/ARM-software/CMSIS-Zone IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

7 years

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Re: [TF-M] TF-M / CMSIS-Zone Alignment

by Mate Toth-Pal

Hi Robert, The region IDs in 'tfm_ns_region_e' are used for two purposes in TF-M (just as you mention in your mail): 1. For configuring the SAU. As far as I understood, with the CMSIS-Zone Utility it is possible to generate a 'tz_sau_nvic.c' file, which then can be added to the platform folder of a target in TF-M. The tfm_spm_hal_init_isolation_hw(...) hal function then can call the TZ_Config_SAU(...) function defined in 'tz_sau_nvic.c'. The TZ_Config_SAU(...) uses integer literals to address the different regions of the SAU, but that is OK for this purpose. 2. The tfm_core_memory_permission_check_handler(...) function The idea was that secure services would be able to query whether the caller NS client has access to a certain NS memory region. Implementing this feature would require TF-M core to know whether a region returned by cmse_check_address_range is a Non-Secure memory or not. With the current output of the CMSIS-Zone Utility I don't see this is possible other than looking into the config of the SAU region and check the content of the RLAR register. (Although this would only reveal whether the region is S/NS, code/data differentiation should be done in a different way) However this feature never got implemented, and this is only supported in Library model. Also after removing isolation level 3 from Library model I think there is no point in keeping this function. So the reference to the SAU regions from this function can be removed. So summarizing the above, I think there is no reason why CMSIS-Zone Utility could not be used in TF-M, and it seems that it could be integrated fairly easily. Regards, Mate -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of Robert Rostohar via TF-M Sent: 26 September 2019 09:27 To: Summer Qin (Arm Technology China) <Summer.Qin(a)arm.com> Cc: tf-m(a)lists.trustedfirmware.org Subject: Re: [TF-M] TF-M / CMSIS-Zone Alignment Hi Summer, Thanks for looking into this. Requesting a specific SAU region number for a specific memory region is an inconvenience for CMSIS-Zone. It introduces additional complexity for the user who would need to know and configure this and also for the tool to handle. Normally the user just configures the memory region (address, size, access. security, privilege, ...) and leaves to the tool to assign a region and generate the SAU setup code. Having the additional constrain (ex: NS_CODE needs to be assigned to RGN=0) is just another obstacle and source of error in user configuration of the memory layout for TF-M. I would help if TF-M would remove the constrain on specific region number assignments. Thanks, Robert -----Original Message----- From: Summer Qin (Arm Technology China) <Summer.Qin(a)arm.com> Sent: Thursday 26 September 2019 08:14 To: Robert Rostohar <Robert.Rostohar(a)arm.com>; tf-m(a)lists.trustedfirmware.org Subject: Re: [TF-M] TF-M / CMSIS-Zone Alignment Hi Robert, I think the static defined region number would be much for easier for implementation: First, we need to assign a Region Number together with RBAR and RLAR. Then, we could use the Region Number to stand for the region that is configured by the RBAR and RLAR. It is just like an ID for a block of the memory. Dose it causes some inconvenience for CMSIS-Zone? Regards, Summer On 9/13/19, 6:56 PM, "TF-M on behalf of Robert Rostohar via TF-M" <tf-m-bounces(a)lists.trustedfirmware.org on behalf of tf-m(a)lists.trustedfirmware.org> wrote: Hi, We are working on CMSIS-Zone Utility [1] which is a GUI tool for configuring a complex system. This includes also TrustZone setup (SAU) and device specific MPC and PPC. This tool can be also used to configure SAU, MPC and PPC in TF-M. However TF-M currently requires that a specific region number is used for NS_REGION_CODE (0), NS_REGION_DATA (1), ... Those region numbers are used when SAU is configured in function sau_and_idau_cfg and the code in function tfm_core_memory_permission_check_handler depends on it. Is it really necessary that a specific region number is being used and why? I have received indication that this in not really needed and that the code should be redesigned. This would enable the use of CMSIS-Zone to configure TF-M out of the box. Thanks, Robert [1] https://github.com/ARM-software/CMSIS-Zone IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m

7 years

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Re: [TF-M] TF-M / CMSIS-Zone Alignment

by Summer Qin (Arm Technology China)

Hi Robert, I think the static defined region number would be much for easier for implementation: First, we need to assign a Region Number together with RBAR and RLAR. Then, we could use the Region Number to stand for the region that is configured by the RBAR and RLAR. It is just like an ID for a block of the memory. Dose it causes some inconvenience for CMSIS-Zone? Regards, Summer On 9/13/19, 6:56 PM, "TF-M on behalf of Robert Rostohar via TF-M" <tf-m-bounces(a)lists.trustedfirmware.org on behalf of tf-m(a)lists.trustedfirmware.org> wrote: Hi, We are working on CMSIS-Zone Utility [1] which is a GUI tool for configuring a complex system. This includes also TrustZone setup (SAU) and device specific MPC and PPC. This tool can be also used to configure SAU, MPC and PPC in TF-M. However TF-M currently requires that a specific region number is used for NS_REGION_CODE (0), NS_REGION_DATA (1), ... Those region numbers are used when SAU is configured in function sau_and_idau_cfg and the code in function tfm_core_memory_permission_check_handler depends on it. Is it really necessary that a specific region number is being used and why? I have received indication that this in not really needed and that the code should be redesigned. This would enable the use of CMSIS-Zone to configure TF-M out of the box. Thanks, Robert [1] https://github.com/ARM-software/CMSIS-Zone IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

7 years

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Please continue reviewing the merging patches from feature-twincpu branch

by David Hu (Arm Technology China)

Hi all, Sorry for frequent review requests of merging feature-twincpu back. To avoid making it more annoying, I combine three topics here. Please check the details below. 1. NS part changes NSPE mailbox, NS PSA client call interface in multi-core topology, mailbox initialization in NS App main(). https://review.trustedfirmware.org/q/topic:%22twincpu-merge-ns%22+(status:o… 2. Multi-core memory access check Multi-core specific memory access check since multi-core platform cannot rely on the memory check provided by CMSE. A dedicated design document is uploaded, which has been reviewed and accepted on feature-twincpu branch https://review.trustedfirmware.org/q/topic:%22twincpu-merge-mem-check%22+(s… 3. Changes to linker script Several changes to linker script to enable multi-core build: Adjust secure data sections layout to save MPU region and memory resource on Armv6-M/Armv7-M Add a RAM code section to support running code from RAM. https://review.trustedfirmware.org/q/topic:%22twincpu-merge-link-script%22+… This should be the last review request/last merge step before pushing specific multi-core platform support, I promise, at least in Sept. 😊 Best regards, Hu Ziji -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of David Hu (Arm Technology China) via TF-M Sent: Tuesday, September 24, 2019 2:07 PM To: tf-m(a)lists.trustedfirmware.org Cc: nd <nd(a)arm.com> Subject: [TF-M] Please review the changes to TF-M core/SPM and mailbox from feature-twincpu branch Hi all, Here is the forth step of merging feature-twincpu back to master branch. It includes the changes to TF-M core/SPM and SPE mailbox implementation. Please help review the patches via https://review.trustedfirmware.org/q/topic:%22twincpu-merge-core-mailbox%22… I planned to split those features into multiple topics but failed due to the dependencies between them. They are the key part of multi-core communication, plus the NS mailbox part. I'd like to introduce the components a little bit below. 1. Common PSA client call handlers Multi-core topology invokes PSA client call via mailbox, rather than by calling veneers. https://review.trustedfirmware.org/c/trusted-firmware-m/+/2019/ extracts out common PSA client call handlers from existing svcalls. Single-Armv8-M and multi-core topology can implement their own PSA client call functions respectively and invoke the common PSA client call handlers. 2. Remote Procedure Call (RPC) RPC layer sits between TF-M SPM and underlying SPE mailbox implementation. It decouples the actual mailbox implementations to TF-M SPM and defines several callbacks for underlying mailbox. 3. SPE mailbox As the name implies, it implements the mailbox functionalities and RPC callbacks in SPE. It also defines mailbox HAL APIs for platforms. The NSPE part mailbox will be uploaded later. 4. Generic multi-core functionalities This part adds several TF-M core functions, with multi-core specific implementations, such as tfm_nspm_thread_entry () and tfm_psa_ipc_request_handler(). Best regards, Hu Ziji -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of David Hu (Arm Technology China) via TF-M Sent: Friday, September 20, 2019 5:57 PM To: tf-m(a)lists.trustedfirmware.org Cc: nd <nd(a)arm.com> Subject: [TF-M] Please review topology changes for supporting diverse topology use cases Hi all, Would you please help review the following patches to support multi-core topology in TF-M? https://review.trustedfirmware.org/q/topic:%22twincpu-merge-topology%22+(st… Those patches prepare for multi-core support being merged from feature-twincpu branch to master branch. It is the third step of the merging back progress. The previous steps are multi-core build enhancement and Armv6-M/Armv7-M arch support below. If it sounds interesting to you, I'm glad to share more details about multi-core development and plan of merging it back to master. Best regards, Hu Ziji -----Original Message----- From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of David Hu (Arm Technology China) via TF-M Sent: Thursday, September 19, 2019 4:37 PM To: tf-m(a)lists.trustedfirmware.org Cc: nd <nd(a)arm.com> Subject: [TF-M] Please review Armv6-M/Armv7-M support patches Hi all, Could you please take a look at the following patch set to add Armv6-M/Armv7-M support? https://review.trustedfirmware.org/q/topic:%22twincpu-merge-arch%22+(status… That patch set merges Armv6-M/Armv7-M support from feature-twincpu branch back to master branch. It is one step of the progress to merge feature-twincpu branch back to master branch. Any suggestion is welcome. Thanks a lot. Best regards, Hu Ziji -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m -- TF-M mailing list TF-M(a)lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-m

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