Hi Chris,
It is an excellent suggestion.
Out-of-tree Secure Partition build can help integrate secure test service.
Non-secure tests are a bit limited due to current tf-m-tests framework right now.
Do you prefer to run platform-specific tests alone or still integrate platform-specific tests into TF-M regression tests?
Best regards,
Hu Ziji
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of chris.brand--- via TF-M
Sent: Tuesday, August 24, 2021 11:46 PM
To: tf-m(a)lists.trustedfirmware.org
Subject: Re: [TF-M] [RFC] Decoupling tf-m-tests from TF-M
Just wondering if any though has been given to supporting platform-specific tests?
Chris
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org<mailto:tf-m-bounces@lists.trustedfirmware.org>> On Behalf Of David Hu via TF-M
Sent: Tuesday, August 24, 2021 3:21 AM
To: Andrej Butok <andrey.butok(a)nxp.com<mailto:andrey.butok@nxp.com>>
Cc: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Subject: Re: [TF-M] [RFC] Decoupling tf-m-tests from TF-M
Caution: This e-mail originated outside Infineon Technologies. Do not click on links or open attachments unless you validate it is safe<https://intranet-content.infineon.com/explore/aboutinfineon/rules/informati…>.
Hi Andrej,
Thanks for the suggestion. Sure. I will track it in the backlog.
Currently Jianliang and I are more focusing on the structure level enhancement. But definitely later we will take more effort in the detailed optimizations.
Please let us know any time if any other potential issue shall be optimized.
Best regards,
Hu Ziji
From: Andrej Butok <andrey.butok(a)nxp.com<mailto:andrey.butok@nxp.com>>
Sent: Tuesday, August 24, 2021 6:15 PM
To: David Hu <David.Hu(a)arm.com<mailto:David.Hu@arm.com>>
Cc: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Subject: RE: [RFC] Decoupling tf-m-tests from TF-M
Hi Hu Zij,
Thank you for adding possibility to select test cases flexibly.
Also, there are about 10 "test" services/partitions in addition to the core PSA ones.
But every instance allocates own resources, which can be shared.
Guess, merging these 10 test services, which have a common structure, can save some memory.
Thank you,
Andrej
From: David Hu <David.Hu(a)arm.com<mailto:David.Hu@arm.com>>
Sent: Tuesday, August 24, 2021 11:54 AM
To: Andrej Butok <andrey.butok(a)nxp.com<mailto:andrey.butok@nxp.com>>
Cc: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Subject: RE: [RFC] Decoupling tf-m-tests from TF-M
Hi Andrej,
Sorry for the trouble.
It does be an issue when TF-M features and test cases are growing faster.
So now TF-M support to select a single test case or a subset of test cases to build and run. If running all the tests together costs too much memory, you can select some test cases or just a single one in one time.
It is also helpful when you focus on a specific test in debug or development.
We are also considering other additional mechanisms to select test case flexibly.
Regarding "merging existing ones", do you mean that some test cases shall be disabled by default or combining the similar test cases? May I ask for some examples?
Best regards,
Hu Ziji
From: Andrej Butok <andrey.butok(a)nxp.com<mailto:andrey.butok@nxp.com>>
Sent: Tuesday, August 24, 2021 5:44 PM
To: David Hu <David.Hu(a)arm.com<mailto:David.Hu@arm.com>>
Cc: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Subject: RE: [RFC] Decoupling tf-m-tests from TF-M
Hi Hu Ziji,
BTW:
The number of the testing partitions and services is growing consuming memory resources.
So, we have to disable some tests for our memory constrained devices.
Please think about minimizing number of "testing" partitions/services, by merging existing ones, when it is possible.
Thank you,
Andrej Butok
SW Tech Lead
Edge Processing
NXP Semiconductors
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org<mailto:tf-m-bounces@lists.trustedfirmware.org>> On Behalf Of David Hu via TF-M
Sent: Tuesday, August 24, 2021 11:33 AM
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] [RFC] Decoupling tf-m-tests from TF-M
Hi all,
As you may know, Jianliang and I are working to better decouple tf-m-tests from trusted-firmware-m repo.
The purpose of the decoupling enhancement includes:
* Making it more easier to integrate TF-M and port tf-m-tests
* Making it more easier to develop TF-M tests, to minimize the changes to TF-M source code or build system.
* Making it more flexible to re-structure tf-m-tests and minimize the impact to TF-M
Previously Jianliang has decouple test case control and enable users to select single NS/S regression test case in build and test.
Currently we are focusing on decoupling tf-m-tests specific config setting from TF-M.
So far we have proposed the following major changes:
* Decouple tf-m-tests specific config setting from trusted-firmware-m.
[TF-M patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>][tf-m-tests patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>]
* Move tf-m-tests specific configs to tf-m-tests repo from trusted-firmware-m
[TF-M patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>][tf-m-tests patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>]
More patch sets for decoupling are under review as well.
* Decouple tf-m-tests secure log from non-secure log. Switch tf-m-tests secure log to TF-M SP log.
[TF-M patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>][tf-m-tests patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>]
* Trigger secure regression tests in TF-M SPE in IPC model, to simplify multi-core development/tests
[TF-M patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>][tf-m-tests patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>]
I'd appreciate it if you can take a look at the patch sets above. Any suggestion or comment is welcome.
If you have any specific requirement or suggestion of tf-m-tests enhancement, please feel free to contact Jianliang and me.
Thanks in advance.
Best regards,
Hu Ziji
Hi,
The next Technical Forum is planned on Thursday, September 2, 15:00-16:00 UTC (US time zone).
Please reply on this email with your proposals for agenda topics.
Recording and slides of previous meetings are here:
https://www.trustedfirmware.org/meetings/tf-m-technical-forum/
Best regards,
Anton
Just wondering if any though has been given to supporting platform-specific tests?
Chris
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of David Hu via TF-M
Sent: Tuesday, August 24, 2021 3:21 AM
To: Andrej Butok <andrey.butok(a)nxp.com>
Cc: tf-m(a)lists.trustedfirmware.org
Subject: Re: [TF-M] [RFC] Decoupling tf-m-tests from TF-M
Caution: This e-mail originated outside Infineon Technologies. Do not click on links or open attachments unless you validate it is safe<https://intranet-content.infineon.com/explore/aboutinfineon/rules/informati…>.
Hi Andrej,
Thanks for the suggestion. Sure. I will track it in the backlog.
Currently Jianliang and I are more focusing on the structure level enhancement. But definitely later we will take more effort in the detailed optimizations.
Please let us know any time if any other potential issue shall be optimized.
Best regards,
Hu Ziji
From: Andrej Butok <andrey.butok(a)nxp.com<mailto:andrey.butok@nxp.com>>
Sent: Tuesday, August 24, 2021 6:15 PM
To: David Hu <David.Hu(a)arm.com<mailto:David.Hu@arm.com>>
Cc: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Subject: RE: [RFC] Decoupling tf-m-tests from TF-M
Hi Hu Zij,
Thank you for adding possibility to select test cases flexibly.
Also, there are about 10 "test" services/partitions in addition to the core PSA ones.
But every instance allocates own resources, which can be shared.
Guess, merging these 10 test services, which have a common structure, can save some memory.
Thank you,
Andrej
From: David Hu <David.Hu(a)arm.com<mailto:David.Hu@arm.com>>
Sent: Tuesday, August 24, 2021 11:54 AM
To: Andrej Butok <andrey.butok(a)nxp.com<mailto:andrey.butok@nxp.com>>
Cc: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Subject: RE: [RFC] Decoupling tf-m-tests from TF-M
Hi Andrej,
Sorry for the trouble.
It does be an issue when TF-M features and test cases are growing faster.
So now TF-M support to select a single test case or a subset of test cases to build and run. If running all the tests together costs too much memory, you can select some test cases or just a single one in one time.
It is also helpful when you focus on a specific test in debug or development.
We are also considering other additional mechanisms to select test case flexibly.
Regarding "merging existing ones", do you mean that some test cases shall be disabled by default or combining the similar test cases? May I ask for some examples?
Best regards,
Hu Ziji
From: Andrej Butok <andrey.butok(a)nxp.com<mailto:andrey.butok@nxp.com>>
Sent: Tuesday, August 24, 2021 5:44 PM
To: David Hu <David.Hu(a)arm.com<mailto:David.Hu@arm.com>>
Cc: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Subject: RE: [RFC] Decoupling tf-m-tests from TF-M
Hi Hu Ziji,
BTW:
The number of the testing partitions and services is growing consuming memory resources.
So, we have to disable some tests for our memory constrained devices.
Please think about minimizing number of "testing" partitions/services, by merging existing ones, when it is possible.
Thank you,
Andrej Butok
SW Tech Lead
Edge Processing
NXP Semiconductors
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org<mailto:tf-m-bounces@lists.trustedfirmware.org>> On Behalf Of David Hu via TF-M
Sent: Tuesday, August 24, 2021 11:33 AM
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] [RFC] Decoupling tf-m-tests from TF-M
Hi all,
As you may know, Jianliang and I are working to better decouple tf-m-tests from trusted-firmware-m repo.
The purpose of the decoupling enhancement includes:
* Making it more easier to integrate TF-M and port tf-m-tests
* Making it more easier to develop TF-M tests, to minimize the changes to TF-M source code or build system.
* Making it more flexible to re-structure tf-m-tests and minimize the impact to TF-M
Previously Jianliang has decouple test case control and enable users to select single NS/S regression test case in build and test.
Currently we are focusing on decoupling tf-m-tests specific config setting from TF-M.
So far we have proposed the following major changes:
* Decouple tf-m-tests specific config setting from trusted-firmware-m.
[TF-M patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>][tf-m-tests patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>]
* Move tf-m-tests specific configs to tf-m-tests repo from trusted-firmware-m
[TF-M patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>][tf-m-tests patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>]
More patch sets for decoupling are under review as well.
* Decouple tf-m-tests secure log from non-secure log. Switch tf-m-tests secure log to TF-M SP log.
[TF-M patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>][tf-m-tests patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>]
* Trigger secure regression tests in TF-M SPE in IPC model, to simplify multi-core development/tests
[TF-M patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>][tf-m-tests patch<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr…>]
I'd appreciate it if you can take a look at the patch sets above. Any suggestion or comment is welcome.
If you have any specific requirement or suggestion of tf-m-tests enhancement, please feel free to contact Jianliang and me.
Thanks in advance.
Best regards,
Hu Ziji
Hi Hu Ziji,
BTW:
The number of the testing partitions and services is growing consuming
memory resources.
So, we have to disable some tests for our memory constrained devices.
Please think about minimizing number of "testing" partitions/services, by
merging existing ones, when it is possible.
Thank you,
Andrej Butok
SW Tech Lead
Edge Processing
NXP Semiconductors
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of David Hu
via TF-M
Sent: Tuesday, August 24, 2021 11:33 AM
To: tf-m(a)lists.trustedfirmware.org
Cc: nd <nd(a)arm.com>
Subject: [TF-M] [RFC] Decoupling tf-m-tests from TF-M
Hi all,
As you may know, Jianliang and I are working to better decouple tf-m-tests
from trusted-firmware-m repo.
The purpose of the decoupling enhancement includes:
* Making it more easier to integrate TF-M and port tf-m-tests
* Making it more easier to develop TF-M tests, to minimize the changes
to TF-M source code or build system.
* Making it more flexible to re-structure tf-m-tests and minimize the
impact to TF-M
Previously Jianliang has decouple test case control and enable users to
select single NS/S regression test case in build and test.
Currently we are focusing on decoupling tf-m-tests specific config setting
from TF-M.
So far we have proposed the following major changes:
* Decouple tf-m-tests specific config setting from trusted-firmware-m.
[TF-M patch
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr
ustedfirmware.org%2Fc%2FTF-M%2Ftrusted-firmware-m%2F%2B%2F11167&data=04%7C01
%7Candrey.butok%40nxp.com%7Ce6deb39c9db74755362008d966e231b0%7C686ea1d3bc2b4
c6fa92cd99c5c301635%7C0%7C0%7C637653943958809255%7CUnknown%7CTWFpbGZsb3d8eyJ
WIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata
=4nA45CyrLoYjN2b9ytZ6HL16Of9ItUs5OAUbPlsFPTM%3D&reserved=0> ][tf-m-tests
patch
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr
ustedfirmware.org%2Fc%2FTF-M%2Ftf-m-tests%2F%2B%2F11169%2F1&data=04%7C01%7Ca
ndrey.butok%40nxp.com%7Ce6deb39c9db74755362008d966e231b0%7C686ea1d3bc2b4c6fa
92cd99c5c301635%7C0%7C0%7C637653943958809255%7CUnknown%7CTWFpbGZsb3d8eyJWIjo
iMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=aBB
0Wq8QLghyfAdwzpK%2BHR8R8LVN5emXxL0KOc4bPho%3D&reserved=0> ]
* Move tf-m-tests specific configs to tf-m-tests repo from
trusted-firmware-m
[TF-M patch
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr
ustedfirmware.org%2Fc%2FTF-M%2Ftrusted-firmware-m%2F%2B%2F10647&data=04%7C01
%7Candrey.butok%40nxp.com%7Ce6deb39c9db74755362008d966e231b0%7C686ea1d3bc2b4
c6fa92cd99c5c301635%7C0%7C0%7C637653943958819210%7CUnknown%7CTWFpbGZsb3d8eyJ
WIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata
=QwtROeuQVK8nWtprtRVZJnzXM2%2FBgX1ZZspl6dsxBFE%3D&reserved=0> ][tf-m-tests
patch
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr
ustedfirmware.org%2Fc%2FTF-M%2Ftf-m-tests%2F%2B%2F10556&data=04%7C01%7Candre
y.butok%40nxp.com%7Ce6deb39c9db74755362008d966e231b0%7C686ea1d3bc2b4c6fa92cd
99c5c301635%7C0%7C0%7C637653943958819210%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4
wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=IYzd75F
NoPwLLzoHqvpNJrn4fAaHTeOYzTujFWJDPTQ%3D&reserved=0> ]
More patch sets for decoupling are under review as well.
* Decouple tf-m-tests secure log from non-secure log. Switch
tf-m-tests secure log to TF-M SP log.
[TF-M patch
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr
ustedfirmware.org%2Fc%2FTF-M%2Ftrusted-firmware-m%2F%2B%2F11153&data=04%7C01
%7Candrey.butok%40nxp.com%7Ce6deb39c9db74755362008d966e231b0%7C686ea1d3bc2b4
c6fa92cd99c5c301635%7C0%7C0%7C637653943958829167%7CUnknown%7CTWFpbGZsb3d8eyJ
WIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata
=27x4o2UrAFCFMFx3fC7ebiv0EAsBvOEtY%2BqtZzc7Q6Q%3D&reserved=0> ][tf-m-tests
patch
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr
ustedfirmware.org%2Fc%2FTF-M%2Ftf-m-tests%2F%2B%2F11131%2F3&data=04%7C01%7Ca
ndrey.butok%40nxp.com%7Ce6deb39c9db74755362008d966e231b0%7C686ea1d3bc2b4c6fa
92cd99c5c301635%7C0%7C0%7C637653943958829167%7CUnknown%7CTWFpbGZsb3d8eyJWIjo
iMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=xT5
oks2R0hXyCorWsfkytx%2FCidUF8%2Bv6jMBAFxrgf2g%3D&reserved=0> ]
* Trigger secure regression tests in TF-M SPE in IPC model, to
simplify multi-core development/tests
[TF-M patch
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr
ustedfirmware.org%2Fc%2FTF-M%2Ftrusted-firmware-m%2F%2B%2F11181&data=04%7C01
%7Candrey.butok%40nxp.com%7Ce6deb39c9db74755362008d966e231b0%7C686ea1d3bc2b4
c6fa92cd99c5c301635%7C0%7C0%7C637653943958839123%7CUnknown%7CTWFpbGZsb3d8eyJ
WIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata
=tMKKb6FHOh1pBZg62QKHBUCXaAXmv8o%2F%2Bwabe2XXOnc%3D&reserved=0> ][tf-m-tests
patch
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freview.tr
ustedfirmware.org%2Fc%2FTF-M%2Ftf-m-tests%2F%2B%2F11182&data=04%7C01%7Candre
y.butok%40nxp.com%7Ce6deb39c9db74755362008d966e231b0%7C686ea1d3bc2b4c6fa92cd
99c5c301635%7C0%7C0%7C637653943958839123%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4
wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=j6Hf2wa
6wKm8LphtLfo8SK8kkhnazAJ%2F5RrN2eUhFIc%3D&reserved=0> ]
I'd appreciate it if you can take a look at the patch sets above. Any
suggestion or comment is welcome.
If you have any specific requirement or suggestion of tf-m-tests
enhancement, please feel free to contact Jianliang and me.
Thanks in advance.
Best regards,
Hu Ziji
Hi dear platform maintainers,
I'd like to draw your attention on this patch<https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/11165>.
It changes the initialization stack from PSP to MSP.
Would you please check if this change breaks your platform?
Hi Thomas@IAR, would you please check the changes for IAR?
Thanks.
For the details of the change, please refer to the patch.
Best Regards,
Kevin
Hi Suresh,
I think still there is some misunderstanding here about the role of MCUboot in the update process.
I try to clarify it:
* MCUboot is the *bootloader* in the system, it does not care how the new images are getting installed on the device.
* MCUboot defines a static allocation of the flash. There are the primary slot where the active runtime images are stored and executed from there (if upgrade startegy is XIP) and there are the secondary slot where the candidate image is written by the update client, which his part of the runtime firmware.
* MCUboot is not involved at all in the process when new image is downloaded from the remote server and written to the flash (to secondary slot).
* MCUboot jobs to recognize that there is a new image (magic value is set at the end of secondary slot), validates it (hash + signature) and move it (if valid) to the primary slot to make it executable (because image is XIP and linked to the address space of the primary slot)
* When moving is done just jumps to the reset handler of the new image.
TF-M expose a standard FWU API, which can be used by any cloud client:
* FWU partition in the secure side is responsible to write the new image to the flash
* Because TF-M relies on MCUBoot as a bootloader therefore the image must be placed to the right place in the flash (secondary slot) and some MCUboot specific flags must be set (magic value to indicate new image existence). Therefore in the FWU secure partition there is a MCUboot shim layer to handle these bootloader specific task
* However, MCUBoot can replaced by any bootloader if one wants and then the shim layer also can be replaced to do other bootloader specific things.
* In this architecture update client is responsible to download the image from the remote server and the FWU partition is responsible to write it to the right location.
An implementer can choose:
* Implement the FWU API on the non-secure side
* Do not use FWU API, just writes the image to the right flash location and set certain flags in the flash that allows MCUboot to find the image
* Replace MCUboot with custom bootloader if he wants
I hope this helps!
The call path in the previous mail was incorrect. The correct call path is:
Update client application
|
| Function call
V
FWU API
|
| TF-M psa_call() etc.
V
FWU Partition
|
| Function call
V
MCUBoot Shim Layer
|
| Function call
V
MCUBoot user API
========================== RESTART ======================
MCUboot engine parse flash, validate new image, if there is any, and move it around to the primary slot
|
|
V Function call, never returns
Reset_Handler of new image
BR,
Tamas
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of Suresh Marisetty via TF-M
Sent: 2021. május 25., kedd 16:16
To: Andrew Thoelke <Andrew.Thoelke(a)arm.com>; tf-m(a)lists.trustedfirmware.org
Cc: nd <nd(a)arm.com>
Subject: Re: [TF-M] Firmware update API - MCUboot update
Hi Andrew,
I am thinking of two paths for the update client application: one through MCUBoot and another direct to the FWU interface. MCUBoot path is for legacy application compatibility purpose. Longer term, I am wondering if MCUBoot is needed.
In embedded there is always a challenge to optimize the code size as space in storage is limited and any optimization to remove redundancies will help.
Update client application
|
| Function call
V V
MCUBoot user API |
Shim layer |
| |
| Function call |
V |
FWU API <------------|
|
| TF-M psa_call() etc.
V
FWU Partition
|
| Function call
V
MCUBoot user API
MCUBoot engine
MCUBoot image size is around 60K and
thanks
Suresh Marisetty
Infineon Semiconductor Corporation
From: Andrew Thoelke <Andrew.Thoelke(a)arm.com<mailto:Andrew.Thoelke@arm.com>>
Sent: Tuesday, May 25, 2021 1:39 AM
To: Marisetty Suresh (CYSC CSS ICW SW SSE) <Suresh.Marisetty(a)infineon.com<mailto:Suresh.Marisetty@infineon.com>>; tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Cc: nd <nd(a)arm.com<mailto:nd@arm.com>>
Subject: RE: Firmware update API - MCUboot update
Caution: This e-mail originated outside Infineon Technologies. Do not click on links or open attachments unless you validate it is safe<https://goto.infineon.com/SocialEngineering>.
Hi Suresh,
> I am of the belief that MCUboot will be a very thin shim layer over the FWU API to provide the compatibility interface to legacy software and most of the work that was done earlier in MCUboot is pushed down into the FWU partition.
Are you suggesting that the software stack might look like this:
Update client application
|
| Function call
V
MCUBoot user API
Shim layer
|
| Function call
V
FWU API
|
| TF-M psa_call() etc.
V
FWU Partition
|
| Function call
V
MCUBoot user API
MCUBoot engine
This looks like it has one more layer than it needs, as either:
1. The Update client application could Talk directly to the FWU API, or
2. The first MCUBoot user API could interact with an MCUBoot update partition (RoT Service), without having to tunnel the MCUBoot API over the FWU API. The latter might not be straightforward - I am not sure that anyone has reviewed the two APIs for this purpose.
Are you only considering this software stack for a system where touching the update client application source code is not possible (needed for option #1 above)? - and you also cannot introduce a custom MCUBoot RoT Service partition (option #2 above) so you want to reuse TF-M's existing FWU API and partition?
Regards,
Andrew
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org<mailto:tf-m-bounces@lists.trustedfirmware.org>> On Behalf Of Suresh Marisetty via TF-M
Sent: 25 May 2021 02:37
To: Sherry Zhang <Sherry.Zhang2(a)arm.com<mailto:Sherry.Zhang2@arm.com>>; tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Cc: nd <nd(a)arm.com<mailto:nd@arm.com>>
Subject: Re: [TF-M] Firmware update API - MCUboot update
Hi Sherry,
Thanks for the info. Wondering if there is some documentation or powerpoint explaining how the MCUBoot is changed to accommodate the FWU API.
Details that would help:
1. How the MCUboot works without the FWU API - natively
2. How the MCUBoot needs to be modified to leverage from FWU API
3. What components are retained in MCUBoot ex: image format, signing, metadata, tools
I am of the belief that MCUboot will be a very thin shim layer over the FWU API to provide the compatibility interface to legacy software and most of the work that was done earlier in MCUboot is pushed down into the FWU partition.
The other way to look at it is: If somebody wants to replace MCUboot with a simple BL to integrate it tightly into TFM, what would that look like?
thanks
Suresh Marisetty
Infineon Semiconductor Corporation
From: Sherry Zhang <Sherry.Zhang2(a)arm.com<mailto:Sherry.Zhang2@arm.com>>
Sent: Thursday, May 13, 2021 7:51 PM
To: Marisetty Suresh (CYSC CSS ICW SW SSE) <Suresh.Marisetty(a)infineon.com<mailto:Suresh.Marisetty@infineon.com>>; tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Cc: nd <nd(a)arm.com<mailto:nd@arm.com>>
Subject: RE: Firmware update API - MCUboot update
Caution: This e-mail originated outside Infineon Technologies. Do not click on links or open attachments unless you validate it is safe<https://goto.infineon.com/SocialEngineering>.
Hi Suresh,
The MCUboot update functionality is about validating the existing images on the device which is different from that of the firmware update service which follows mostly with the PSA Firmware Update API spec<https://developer.arm.com/documentation/ihi0093/latest/>.
We designed a shim layer between the firmware update partition and bootloader. A specific bootloader can be ported into the firmware update partition via that shim layer. Please refer to the firmware update service document<https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/techn…>. In the MCUboot based shim layer implementation, it calls some user/public APIs provided by MCUboot to achieve its functionality. For example, the Firmware Update API spec describes that psa_fwu_install() API should validate the image or defer the validation to a system reboot. In the MCUboot shim layer implementation, it calls the boot_write_magic() API to mark the image as a candidate image for MCUboot and defers the image validation to a system reboot. Please refer to this link<https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/secure_fw/…>.
Can you please provide more specific suggestion or questions?
Regards,
Sherry Zhang
From: Suresh.Marisetty(a)infineon.com<mailto:Suresh.Marisetty@infineon.com> <Suresh.Marisetty(a)infineon.com<mailto:Suresh.Marisetty@infineon.com>>
Sent: Thursday, May 13, 2021 11:40 PM
To: Sherry Zhang <Sherry.Zhang2(a)arm.com<mailto:Sherry.Zhang2@arm.com>>; tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Cc: nd <nd(a)arm.com<mailto:nd@arm.com>>
Subject: RE: Firmware update API - MCUboot update
Hi Sherry,
Please take a closer look at the MCUboot and TFM might want to have a clear position/distinction between these two and how to transition from MCUboot update to this mechanism or it could be that they complement each other.
thanks
Suresh Marisetty
Infineon Semiconductor Corporation
From: Sherry Zhang <Sherry.Zhang2(a)arm.com<mailto:Sherry.Zhang2@arm.com>>
Sent: Wednesday, May 12, 2021 8:55 PM
To: Marisetty Suresh (CYSC CSS ICW SW SSE) <Suresh.Marisetty(a)infineon.com<mailto:Suresh.Marisetty@infineon.com>>; tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Cc: nd <nd(a)arm.com<mailto:nd@arm.com>>
Subject: RE: Firmware update API - MCUboot update
Caution: This e-mail originated outside Infineon Technologies. Do not click on links or open attachments unless you validate it is safe<https://goto.infineon.com/SocialEngineering>.
Hi Suresh,
The firmware update service APIs are for updating the firmware. The functionalities of these APIs includes loading the image into its target device(flash), verifying the image and installing it and so on.
The user can call the these APIs to achieve update images. For example, in the integration of TF-M and the FreeRTOS OTA<https://github.com/Linaro/amazon-freertos/blob/tfm-fwu/libraries/abstractio…>, the OTA agent calls the firmware update service APIs to achieve an image update remotely.
I guess that the "MCUboot update services" you mentioned refers to the functionality of MCUboot which acts as a bootloader. As a bootloader, it can verify the image which already exists on the device and chose the right image to start up. But it cannot, for example, load the image into device or control the image update process.
The firmware update partition calls some user APIs provided by MCUboot to cooperate with it. You can refer to https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/techn….
Regards,
Sherry Zhang
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org<mailto:tf-m-bounces@lists.trustedfirmware.org>> On Behalf Of Suresh Marisetty via TF-M
Sent: Thursday, May 13, 2021 11:09 AM
To: tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Subject: [TF-M] Firmware update API - MCUboot update
Hi,
I would like to see if there is any guidance/documentation on how to coordinate between the firmware update services API with that of MCUboot.
Does the use of this API make the MCUboot update services redundant?
thanks
Suresh Marisetty
Infineon Semiconductor Corporation
Lead Member of Technical Staff
CYSC CSS ICW SW SSE
Mobile: +5103863997
Suresh.Marisetty(a)infineon.com<mailto:Suresh.Marisetty@infineon.com>
Hi all,
Out-of-tree secure partition build is enabled in TF-M.
I'd appreciate it if you are interested to try it in your daily development. Any feedback is welcome!
Best regards,
Hu Ziji
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of David Hu via TF-M
Sent: Thursday, August 12, 2021 11:54 AM
To: tf-m(a)lists.trustedfirmware.org
Cc: nd <nd(a)arm.com>
Subject: [TF-M] Out-of-tree secure partition build support
Hi all,
Can I ask you to review the following patch set to enable out-of-tree secure partition build in TF-M?
https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/10562/
The purpose is to enable developers to develop their own secure partitions outside TF-M repo. Developers can maintain their own code and repos, independently.
Developers can pass their out-of-tree secure partition paths via TF-M command line, to build out-of-tree partitions with TF-M together.
For more details, please check the updated document: https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/10696
Suggestions and comments are welcome!
Best regards,
Hu Ziji
Hi all.
I have introduced the topic of test configurations refinements in the tech forum on August 5. With this new feature, you can build single test case to decrease the image size and the time to wait irrelevant test cases running when debugging. You can use all the 22 new flags in test repo:
TEST_NS
TEST_S
TEST_NS_ATTESTATION
TEST_NS_AUDIT
TEST_NS_CRYPTO
TEST_NS_ITS
TEST_NS_PS
TEST_NS_PLATFORM
TEST_NS_FWU
TEST_NS_IPC
TEST_NS_CORE
TEST_NS_QCBOR
TEST_NS_T_COSE
TEST_NS_MULTI_CORE
TEST_NS_SLIH_IRQ
TEST_NS_FLIH_IRQ
TEST_S_ATTESTATION
TEST_S_AUDIT
TEST_S_CRYPTO
TEST_S_ITS
TEST_S_PS
TEST_S_PLATFORM
TEST_S_FWU
TEST_S_IPC
You can easily use the command below to start single test like NS attestation test case:
cmake -S . -B cmake_build -DTFM_PLATFORM=arm/mps2/an521 \
-DTFM_TOOLCHAIN_FILE=toolchain_GNUARM.cmake \
-DCMAKE_BUILD_TYPE=Release \
-DTFM_PSA_API=ON \
-DTEST_NS_ATTESTATION=ON
Meanwhile, you may receive the warning messages when your test inputs are not supported on the platform.
Here are the patches about this change, any suggestions or improvements are welcome in code review.
l 10767: Build: Control single test without TEST_S/TEST_NS [TF-M repo] https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/10767
l 10768: Build: Control single test without TEST_S/TEST_NS [Test repo] | https://review.trustedfirmware.org/c/TF-M/tf-m-tests/+/10768
Best Regards
Jianliang Shen
Hi Anton,
Did you missed my topic below - brief update on the interrupt status in TF-M and an introduction on how to use/enable it
Best Regards,
Kevin
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org> On Behalf Of Anton Komlev via TF-M
Sent: Wednesday, August 18, 2021 11:13 PM
To: tf-m(a)lists.trustedfirmware.org
Cc: nd <nd(a)arm.com>
Subject: Re: [TF-M] Technical Forum call - Aug 19
The agenda for the forum:
1. "Of out-of-tree Secure Partition build" by David Hu,
2. AOB
See you,
Anton
From: David Hu <David.Hu(a)arm.com<mailto:David.Hu@arm.com>>
Sent: Wednesday, August 18, 2021 2:30 AM
To: Anton Komlev <Anton.Komlev(a)arm.com<mailto:Anton.Komlev@arm.com>>; tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Cc: nd <nd(a)arm.com<mailto:nd@arm.com>>
Subject: RE: Technical Forum call - Aug 19
Hi Anton,
I'd like to introduce the proposal of out-of-tree Secure Partition build.
It may take 15 ~ 20 mins.
Best regards,
Hu Ziji
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org<mailto:tf-m-bounces@lists.trustedfirmware.org>> On Behalf Of Kevin Peng via TF-M
Sent: Tuesday, August 17, 2021 5:49 PM
To: Anton Komlev <Anton.Komlev(a)arm.com<mailto:Anton.Komlev@arm.com>>; tf-m(a)lists.trustedfirmware.org<mailto:tf-m@lists.trustedfirmware.org>
Cc: nd <nd(a)arm.com<mailto:nd@arm.com>>
Subject: Re: [TF-M] Technical Forum call - Aug 19
Hi Anton,
I'd like to give a brief update on the interrupt status in TF-M and an introduction on how to use/enable it.
Would take ~20 min.
Best Regards,
Kevin
From: TF-M <tf-m-bounces(a)lists.trustedfirmware.org<mailto:tf-m-bounces@lists.trustedfirmware.org>> On Behalf Of Anton Komlev via TF-M
Sent: Tuesday, August 17, 2021 5:26 PM
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] Technical Forum call - Aug 19
Hi,
The next Technical Forum is planned on Thursday, Aug 19 at 7:00-8:00 UTC (Asia time zone).
Please reply on this email with your proposals for agenda topics.
Recording and slides of previous meetings are here:
https://www.trustedfirmware.org/meetings/tf-m-technical-forum/
Best regards,
Anton
