Hi Francois,
> I'd be happy to know more about what you see as TFA LTS: exact scope, number of versions, duration, operational commitments (zero-day...).
> Do you have other firmware LTS needs?
Agree. That’s precisely what I was hinting to Varun, when mentioning concrete requirements for the LTS scheme.
> Trusted Substrate is the aggregation of { TFA, OP-TEE, some TEE apps such as firmwareTPM, U-Boot }.
> Trusted Substrate effort is led by Linaro members and is going to be set up as a more open project.
First time I heard about it. Good to know, but I guess we'll need to discuss the intersection and collaboration with the Trusted Firmware project at some point.
Having a LTS versioning scheme for the Trusted Firmware hosted projects should be theoretically either in the scope of the Project itself or, if the Board agrees, appointed to some other project/entity.
> Our end goal is to enable unified, transactional, robust (anti-bricking, anti rollback) UEFI OTA on both U-Boot and EDK2.
Fair, but IMHO this has little to do with Arm Secure world software LTS releases (TF-A/Hafnium/OP-TEE/TAs, TF-M)...probably best to discuss aside, this is not in scope of what Varun is raising.
Thanks
Matteo
Hi Varun,
Thanks for raising this topic (but please do embrace the official terminology “TF-A”…we never really promoted ATF and it's also absolutely outdated now 😉 ).
Arm has received different queries over time on supporting Trusted Firmware LTS releases, but the effort to sustain them is something that the Arm engineering team alone cannot really afford and commit to (either in the TF-A or TF-M space).
The idea has also been just raised to the Trusted Firmware project Board for initial consideration and we will be all very keen to understand how much interest there is from the wider TF-A community of adopters and external (non-Arm) maintainers, so to evaluate the possibility of a more concrete proposal to be carried on within the community Project.
I guess it will also be good to start by elaborating more concretely on the requirements that you would like to see in an hypothetical LTS versioning scheme.
Thanks
Matteo
> From: TF-A <tf-a-bounces(a)lists.trustedfirmware.org> On Behalf Of Varun Wadekar via TF-A
> Sent: 10 June 2020 22:47
> To: tf-a(a)lists.trustedfirmware.org
> Subject: [TF-A] ATF LTS version
>
> Hello team,
>
> To extend the discussion around version upgrades from our last call, I would like to understand if there is enough interest around generating a LTS version of the TF-A to alleviate the pain.
>
> For NVIDIA, this would be helpful as it streamlines the upgrade path for our devices in the field. The LTS version will guarantee security fixes, bug fixes, stability fixes for the longer term and we won’t have to upgrade the entire firmware to get these goodies.
>
> It would be interesting to see what OEMs and maintainers think about this? Has this been discussed at tf.org or Arm internally?
>
> -Varun
Hi Varun,
There are early discussions in Linaro on what would mean setting up
"Collaborative LTS" for what we call Trusted Substrate (see below
signature).
I'd be happy to know more about what you see as TFA LTS: exact scope,
number of versions, duration, operational commitments (zero-day...).
Do you have other firmware LTS needs?
Cheers
François-Frédéric Ozog
Linaro
Trusted Substrate is the aggregation of { TFA, OP-TEE, some TEE apps such
as firmwareTPM, U-Boot }.
Trusted Substrate effort is led by Linaro members and is going to be set up
as a more open project.
Our end goal is to enable unified, transactional, robust (anti-bricking,
anti rollback) UEFI OTA on both U-Boot and EDK2.
On Wed, 10 Jun 2020 at 23:47, Varun Wadekar via TF-A <
tf-a(a)lists.trustedfirmware.org> wrote:
> Hello team,
>
>
>
> To extend the discussion around version upgrades from our last call, I
> would like to understand if there is enough interest around generating a
> LTS version of the TF-A to alleviate the pain.
>
>
>
> For NVIDIA, this would be helpful as it streamlines the upgrade path for
> our devices in the field. The LTS version will guarantee security fixes,
> bug fixes, stability fixes for the longer term and we won’t have to upgrade
> the entire firmware to get these goodies.
>
>
>
> It would be interesting to see what OEMs and maintainers think about this?
> Has this been discussed at tf.org or Arm internally?
>
>
>
> -Varun
> --
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> TF-A(a)lists.trustedfirmware.org
> https://lists.trustedfirmware.org/mailman/listinfo/tf-a
>
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Title: TF-A Tech Forum
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Hi all,
Starting 18th June, the TF-A Tech Forum will be moved earlier by 1 hour to
1600 UK time (1500 UTC). This change is to avoid overlapping with the TF
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We'll delete the existing invite and send a new one to this list.
Regards
Bill
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bill.fletcher(a)linaro.org | Skype: billfletcher2020
Hello team,
To extend the discussion around version upgrades from our last call, I would like to understand if there is enough interest around generating a LTS version of the TF-A to alleviate the pain.
For NVIDIA, this would be helpful as it streamlines the upgrade path for our devices in the field. The LTS version will guarantee security fixes, bug fixes, stability fixes for the longer term and we won't have to upgrade the entire firmware to get these goodies.
It would be interesting to see what OEMs and maintainers think about this? Has this been discussed at tf.org or Arm internally?
-Varun
Dear all,
As part of a patchset series review (topic scmi-msg), change [1]
imports confine_array_index.h header file from OP-TEE OS repository.
The file originates from the open source Fuschia project, see link in
commit message of [1].
As being imported for external packages, the header file inherits
Fushca and OP-TEE notices.
The helper function can protect some data structure from side channel
attacks leveraging index indirect access overflows during speculative
execution.
It is not Arm copyright. It is BSD-3-Clause license.
I'll add an entry in the docs/license.rst for the file.
Where to locate the file?
It is ok to add such a file in include/common?
Does it deserve a specific lib path, like
include/lib/speculconfie_array_index.h?
Maybe add as include/lib/cpus/confine_array_index.h as it is CPU
speculative matters?
Could you help [1] review to progress?
[1] https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/4055
Regards,
Etienne
