Hello,
I'm Junho Choi in Samsung S.LSI and I've been working on virtualization
solution.
I have some questions about Hafnium for Secure EL2 extension.
(1) Why do you consider VHE as default option? (I saw it in
arch_mm_init)
According to Hafnium init sequence, has_vhe_support always returns
true as long as ARM cores have support for VHE.
Is there any requirements that Hafnium should support VHE?
(2) TF-A's SPMD has only forwarded svc_on_finish and svc_off of PSCI.
Why doesn't SPMD forward other commands such as CPU_SUSPEND?
In case of the CPU_SUSPEND, secure EL2 or SP may need to know when
physcial CPU turns off.
(3) Why do you set HCR_EL2.VI and VF to handle virtual interrupt?
I think we have an another method to use List registers
(ICH_LRn_EL2) to inject virtual interrup to guest (SP).
I'm not sure whether asking you is proper or not.
If you're not the right person, please forward this mail to the right
person.
Thanks!
Best Regards,
Junho Choi
[cid:cafe_image_0@s-core.co.kr]
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pdW1AbGlzdHMudHJ1c3RlZGZpcm13YXJlLm9yZw__]
TF-A Tech Forum - Hafnium future looking improvements
Thursday Nov 13, 2025 ⋅ 12pm – 1pm
Central European Time - Paris
Location
https://linaro-org.zoom.us/j/93557863987?pwd=56a1l8cBnetDTZ6eazHGaE1Ctk4W34…https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9355786…
Hi, This is a one off session for a partner to present coming improvements
related to Hafnium project. Apologies for the meeting time not
accommodating people in US timezones. We'll record the session and publish
in the TF-A tech forum page as usual. Regards,Olivier.Trusted Firmware is
inviting you to a scheduled Zoom meeting.Please download and import the
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All,
Please be aware that today we have published our AI policy with Guidance on
AI-assisted contributions.
See the full details here: https://www.trustedfirmware.org/aipolicy/
Should you have any questions feel free to raise them.
Thanks,
Shaun
Community Manager
Hi All,
The next release of the Firmware-A bundle of projects tagged v2.12 has an expected code freeze date of Nov, 8th 2024.
Refer to the release cadence section from TF-A documentation (https://trustedfirmware-a.readthedocs.io/en/latest/about/release-informatio…).
Closing out the release takes around 6-10 working days after the code freeze.
v2.12 release preparation tasks start from now.
We want to ensure that planned feature patches for the release are submitted in good time for the review process to conclude.
As a kind recommendation and a matter of sharing CI resources, please launch CI jobs with care e.g.:
-For simple platform, docs changes, or one liners, use Allow-CI+1 label (no need for a full Allow-CI+2 run).
-For large patch stacks use Allow-CI+2 at top of the patch stack (and if required few individual Allow+CI+1 labels in the middle of the patch stack).
-Carefully analyze results and fix the change if required, before launching new jobs on the same change.
-If after issuing a Allow-CI+1 or Allow-CI+2 label a Build start notice is not added as a gerrit comment on the patch right away please be patient as under heavy load CI jobs can be queued and in extreme conditions it can be over an hour before the Build start notice is issued. Issuing another Allow-CI+1 or Allow-CI+2 label will just result in an additional job being queued.
--
Thanks,
Govindraj R
Hi All,
We will be performing maintenance activity on review.trustedfirmware.org and service will be unavailable on 8th November between 8 AM-11 AM UTC.
Best regards,
Saheer
Hi All,
The next release of the Firmware-A bundle of projects tagged v2.13 has an expected code freeze date of May, 2nd 2025.
In order to accommodate the Linaro connect event occurring during the week of May 12th we may extend the release completion date up until the week of May 26th.
v2.13 release preparation tasks start from now.
We want to ensure that planned feature patches for the release are submitted in good time for the review process to conclude.
As a kind recommendation and a matter of sharing CI resources, please launch CI jobs with care e.g.:
-For simple platform, docs changes, or one liners, use Allow-CI+1 label (no need for a full Allow-CI+2 run).
-For large patch stacks use Allow-CI+2 at top of the patch stack (and if required few individual Allow+CI+1 labels in the middle of the patch stack).
-Carefully analyze results and fix the change if required, before launching new jobs on the same change.
-If after issuing a Allow-CI+1 or Allow-CI+2 label a Build start notice is not added as a gerrit comment on the patch right away please be patient as under heavy load CI jobs can be queued and in extreme conditions it can be over an hour before the Build start notice is issued. Issuing another Allow-CI+1 or Allow-CI+2 label will just result in an additional job being queued.
Regards,
Olivier.
FYI
From: Saheer Babu via Tf-openci <tf-openci(a)lists.trustedfirmware.org>
Date: Wednesday, 10 September 2025 at 15:17
To: tf-openci(a)lists.trustedfirmware.org <tf-openci(a)lists.trustedfirmware.org>
Subject: [Tf-openci] CI infrastructure scheduled maintenance: 12th Sep 2025
Hi all,
We will be performing upgrade of the clusters hosting review.trustedfirmware.org and ci.trustedfirmware.org on Friday, 12th Sep 2025 at 16:00 GMT+1.
During this maintenance window, both services will be unavailable for approximately 4 hours.
A follow-up email will be sent once the services are fully restored.
Best regards,
Saheer
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Hi,
Relaying an important announcement about the new Rusted Firmware-A project hosted on trustedfirmware.org:
Today, the Trusted Firmware organization proudly unveils Rusted Firmware-A (RF-A) v0.1 \u2014 a ground breaking open-source prototype that reimagines Trusted Firmware-A (TF-A) through the adoption of the Rust programming language.
Developed in close collaboration between Arm and Google, both Diamond members of the Trusted Firmware community, RF-A has been architected from the ground up for the latest Arm® A-class processors. With a security-first approach, RF-A delivers strong memory safety, enhanced reliability, and modern modularity.
Unlike incremental updates, Rusted Firmware-A is a complete redesign \u2014 free from legacy constraints, built to leverage modern hardware, and designed to provide a robust, maintainable, and future-ready firmware foundation. This milestone reflects years of industry learnings, community insights, and deep collaboration between leading software and silicon providers.
Press release - https://www.trustedfirmware.org/news/rf-a-press-release
Technical blog - https://www.trustedfirmware.org/blog/rf-a-blog
Linkedin post - https://www.linkedin.com/posts/trustedfirmware-org_rusted-firmware-a-rf-a-a…
Regards,
Olivier on behalf of Arm RF-A team.
Hi,
I'm looking for good examples for manifests, both for S-EL1 SPs and
for Hafnium itself. I've seen a few examples, but I'd like to make
sure I'm doing the right thing. What hardware can be described? How is
memory, secure and non-secure, described? Is HW_CONFIG used by
Hafnium? If so, when and what is the format?
Thanks,
Jens
Hi All,
We are pleased to announce the formal release of Trusted Firmware-A version 2.13 bundle of project deliverables.
This includes Trusted Firmware-A, Trusted Firmware-A Tests, Hafnium, TF-RMM, Trusted Services, and TF-A OpenCI scripts/jobs components.
These went live on May, 22nd 2025.
Please find references to tags and change logs at the end of this email.
Many thanks to the trustedfirmware.org community for the active engagement in delivering this release!
Notable features of the release version 2.13 are as follows:
TF-A/EL3
* Alto CPU support
*
Architecture feature support for PMUv3p9. PAUTH_LR and SPE_FDS.
* Refactor PSCI to let each CPU core initialise its own context, allowing TF-A to natively handle asymmetric configurations
*
PSCI Powerdown abandon feature support
*
SMCCC_FEATURE_AVAILABILITY support based on SMCCC v1.5 specification
* Firmware Handoff
* Library enhancements to add more TE types in library
* All BL interfaces for FVP are now migrated to use Transfer List along in different boot scenarios (RESET_TO_BL1/BL2/BL31)
*
TC platform is now using Transfer List for booting
* HOB creation Library (from edk2) is now hosted in TF-A
* New Platforms: mt8189, mt8196, qcs615, RK3576, AM62L
Boot flow
* Feature Additions
* Added discrete TPM support in BL1/BL2 for the RPi3 platform.
*
Support for MbedTLS PSA Crypto with ROMLIB on FVP.
*
Redesigned PSA Crypto Key ID management to avoid repeated key creation/destruction.
*
Test Additions
*
Support for MbedTLS PSA Crypto with ROMLIB on FVP.
*
Added basic boot test for TF-RMM with TF-A and TFTF (Realm Payload) in Jenkins CI.
*
Integrated DRTM ACS test suite into TF-A Jenkins CI.
*
Added missing test configuration for ROTPK in register on FVP platform.
*
Build System
*
Refactored ROTPK key/hash generation to auto-generate required files during build.
*
mbedTLS Improvements
*
Migrated to mbedTLS version 3.6.3.
Errata/Security mitigations (CPU/GIC)
*
CVE-2024-5660, CVE-2024-7881
* Cortex-A510, Cortex-A715, Cortex-X4, Cortex-X925, Neoverse V3
Hafnium/SPM (S-EL2)
* FF-A v1.2 completed: indirect messaging with service UUIDs.
* FF-A v1.3 early adoption: Update to FFA_MEM_PERM_GET ABIs.
* StMM integration: provide HOB structure as boot information.
* Power management update:
* Bootstrapped secondary vCPUs on secondary cores power on flows.
* SP's subscription to the power off event.
* SP loading: SP artefacts can be bundled in a TL format. I.e SP binary and SP manifest (DTB).
* Resuming ECs for interrupt handling assisted by NWd Scheduler when the SP is in waiting state, with sri-interrupts-policy field in the SP manifest.
TF-RMM (R-EL2)
* Deprivileging RMM code via EL0 App support
*
Added some support for some RMMv1.1 APIs - "RMI_DEV_MEM_(UN)MAP", support for device granules in "RMI_GRANULE_DELEGATE" and "RMI_GRANULE_UNDELEGATE".
*
Additional hardening of RMM via compiler flags `-fstack-protector-strong`, '-Wextra', '-Wstrict-overflow', '-D_FORTIFY_SOURCE=2' and '-Wnull-dereference'.
*
New platform support for RD-V3-R1 and RD-V3-R1-Cfg1 FVPs.
*
Dynamic discovery of PCIE Root complex topology and device memory from the Boot manifest.
Trusted Services (v1.2.0)
* Introduced the fTPM SP. The implementation is experimental.
*
Introduce the new Arm Reference Design-1 AE platform targeting the Automotive segment. It features
high-performance Arm Neoverse V3AE Application Processor compute system, Arm Cortex-R82AE based Safety Island, and
a Runtime Security Engine (RSE) for enhanced security.
*
Updated the se-proxy deployment and added support for the Firmware Update Proxy service. The FWU Proxy implements a Platform Security Firmware Update for the A-profile Arm Architecture<https://developer.arm.com/documentation/den0118/latest/> compliant FWU Agent which runs a PSA Certified Firmware Update API 1.0<https://arm-software.github.io/psa-api/fwu/1.0/> compliant client as its backend.
TF-A Tests
* Enhancements to fuzzing tests (EL3 vendor specific SMC, SDEI, FF-A interface, capability for randomized fuzzing inputs)
* Functionality test
* Firmware Handoff : AArch32 tests and event log testing
* SMCCC_ARCH_FEATURE_AVAILABILITY
* RAS system registers, FPMR, SCTLR2, THE and D128
* validate psci_is_last_cpu_to_idle_at_pwrlvl
* SPM/FF-A : HOB generation, PPI timer interrupts, v1.2 RXTX headers
* RMM: Tests introduced for majority of features developed in RMM
* Platform Support
* Versal NET
* Versal
* Neoverse-RD
Release tags across repositories:
https://git.trustedfirmware.org/plugins/gitiles/TF-A/trusted-firmware-a/+/r…https://git.trustedfirmware.org/plugins/gitiles/TF-A/tf-a-tests/+/refs/tags…https://git.trustedfirmware.org/plugins/gitiles/ci/tf-a-ci-scripts/+/refs/t…https://git.trustedfirmware.org/plugins/gitiles/ci/tf-a-job-configs/+/refs/…https://git.trustedfirmware.org/plugins/gitiles/hafnium/hafnium.git/+/refs/…https://git.trustedfirmware.org/plugins/gitiles/ci/hafnium-ci-scripts/+/ref…https://git.trustedfirmware.org/plugins/gitiles/ci/hafnium-job-configs/+/re…https://git.trustedfirmware.org/plugins/gitiles/TF-RMM/tf-rmm/+/refs/tags/t…https://git.trustedfirmware.org/plugins/gitiles/TS/trusted-services/+/refs/…
Change logs:
https://trustedfirmware-a.readthedocs.io/en/v2.13.0/change-log.html#id1https://trustedfirmware-a-tests.readthedocs.io/en/v2.13.0/change-log.html#v…https://hafnium.readthedocs.io/en/v2.13.0/change-log.html#v2-13https://tf-rmm.readthedocs.io/en/latest/about/change-log.html#v0-7-0https://trusted-services.readthedocs.io/en/stable/project/change-log.html#v…
Regards,
Olivier.