4f82af2fa7
Enable Trusted Firmware-A for Corstone-1000 platforms with Cortex-A320 and
switch the interrupt controller from GICv2/GIC-400 to GICv3/GIC-600.
**Platform/feature enablement**
* Map Ethos-U85 NPU registers (`0x1A050000`, 16 KiB) and its SRAM region
(`0x02400000`, 4 MiB) into Normal World
(`MT_DEVICE | MT_RW | MT_NS` / `MT_MEMORY | MT_RW | MT_NS`).
* Force Cortex-A320 feature selection: enable Armv9 features, disable
Cortex-A35 errata, and select the `cortexa320` override in
`trusted-firmware-a-corstone1000.inc`.
* Build TF-A-Tests with `CORSTONE1000_CORTEX_A320=1` to skip non-applicable
FF-A, PSCI, and CPU-extension tests on Cortex-A320.
**GICv3/GIC-600 transition (A320 builds)**
* Update `plat_my_core_pos()` and `plat_arm_calc_core_pos()` to compute the
linear core position using the Cortex-A320 MPIDR_EL1 affinity layout.
* Add an A320-specific core-position routine in assembly, guarded by
`CORSTONE1000_CORTEX_A320`.
* Switch to the GICv3 driver with GIC-600 extensions:
* Update platform GIC base addresses to the GIC-600 layout.
* Use GICv3 APIs; set `USE_GIC_DRIVER=3`, `GICV3_SUPPORT_GIC600=1`,
and `GIC_ENABLE_V4_EXTN=1`.
* Keep conditional GIC versioning so Cortex-A35 continues to use GICv2/GIC-400.
These changes ensure correct GIC configuration and reliable secondary-core
bring-up on Cortex-A320 while preserving existing Cortex-A35 behavior.
Signed-off-by: Harsimran Singh Tungal <harsimransingh.tungal@arm.com>
Signed-off-by: Frazer Carsley <frazer.carsley@arm.com>
Signed-off-by: Michael Safwat <michael.safwat@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
Introduction
This repository contains the Arm layers for OpenEmbedded.
-
meta-arm
This layer contains general recipes for the Arm architecture, such as firmware, FVPs, and Arm-specific integration.
-
meta-arm-bsp
This layer contains machines for Arm reference platforms, for example FVP Base, Corstone1000, and Juno.
-
meta-arm-toolchain
This layer contains recipes for Arm's binary toolchains (GCC and Clang for -A and -M), and a recipe to build Arm's GCC.
Other Directories
-
ci
This directory contains gitlab continuous integration configuration files (KAS yaml files) as well as scripts needed for this.
-
documentation
This directory contains information on the files in this repository, building, and other relevant documents.
-
kas
This directory contains KAS yaml files to describe builds for systems not used in CI.
-
scripts
This directory contains scripts used in running the CI tests.
Mailing List
To interact with the meta-arm developer community, please email the meta-arm mailing list at meta-arm@lists.yoctoproject.org. Currently, it is configured to only allow emails to members from those subscribed. To subscribe to the meta-arm mailing list, please go to https://lists.yoctoproject.org/g/meta-arm
Contributing
Currently, we only accept patches from the meta-arm mailing list. For general information on how to submit a patch, please read https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded
E-mail meta-arm@lists.yoctoproject.org with patches created using this process. You can configure git-send-email to automatically use this address for the meta-arm repository with the following git command:
$ git config --local --add sendemail.to meta-arm@lists.yoctoproject.org
Commits and patches added should follow the OpenEmbedded patch guidelines:
https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines
The component being changed in the shortlog should be prefixed with the layer name (without the meta- prefix), for example:
arm-bsp/trusted-firmware-a: decrease frobbing level
arm-toolchain/gcc: enable foobar v2
All contributions are under the MIT License.
For a quick start guide on how to build and use meta-arm, go to quick-start.md.
For information on the continuous integration done on meta-arm and how to use it, go to continuous-integration-and-kas.md.
Backporting
Backporting patches to older releases may be done upon request, but only after a version of the patch has been accepted into the master branch. This is done by adding the branch name to email subject line. This should be between the square brackets (e.g., "[" and "]"), and before or after the "PATCH". For example,
[nanbield PATCH] arm/linux-yocto: backport patch to fix 6.5.13 networking issues
Automatic backporting will be done to all branches if the "Fixes: " wording is added to the patch commit message. This is similar to how the Linux kernel community does their LTS kernel backporting. For more information see the "Fixes" portion of https://www.kernel.org/doc/html/latest/process/submitting-patches.html#submittingpatches
Releases and Release Schedule
We follow the Yocto Project release methodology, schedule, and stable/LTS support timelines. For more information on these, please reference:
- https://docs.yoctoproject.org/ref-manual/release-process.html
- https://wiki.yoctoproject.org/wiki/Releases
- https://wiki.yoctoproject.org/wiki/Stable_Release_and_LTS
For more in-depth information on the meta-arm release and branch methodology, go to </documentation/releases.md>.
Reporting bugs
E-mail meta-arm@lists.yoctoproject.org with the error encountered and the steps to reproduce the issue.
Security and Reporting Security Issues
For information on the security of meta-arm and how to report issues, please consult SECURITY.md.
Maintainer(s)
- Jon Mason jon.mason@arm.com
- Ross Burton ross.burton@arm.com