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arm-bsp/docs: corstone1000: Drop A320 content from base documentation
Remove Cortex-A320-specific content from the base Corstone-1000 documentation. Drop the A320-only sections, commands, notes, and subsystem image from the shared Corstone-1000 software architecture and user guide now that the platform is documented in its own standalone document set. Signed-off-by: Michael Safwat <michael.safwat@arm.com> Signed-off-by: Jon Mason <jon.mason@arm.com>
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Michael Safwat
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Jon Mason
Jon Mason
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@@ -116,19 +116,6 @@ The Corstone-1000 architecture is designed to cover a range of
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`Power, Performance, and Area (PPA) <ppa-website_>`__ applications, and enable extension
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for use-case specific applications, for example, sensors, cloud connectivity, and edge computing.
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**************************************
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Corstone-1000 with Cortex-A320 Variant
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**************************************
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This variant of the Corstone-1000 platform replaces the Host System's Cortex-A35 processor
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with a Cortex-A320. In this configuration, the optional External System (previously a Cortex-M3)
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is replaced by an Arm Ethos-U85 Neural Processing Unit (NPU).
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The Ethos-U85 runs in the direct drive configuration, where the Host System is responsible for managing the NPU directly.
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.. image:: images/CorstoneA320Subsystems.png
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:width: 720
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:alt: CorstoneA320Subsystems
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*****************
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Secure Boot Chain
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*****************
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@@ -253,8 +253,6 @@ Build
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.. warning::
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**The External System Processor is not available on the Corstone-1000 with Cortex-A320 FVP.**
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Access to the External System Processor is disabled by default on **Corstone-1000 with Cortex-A35**.
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To build the Corstone-1000 image with External System Processor enabled, run:
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@@ -263,18 +261,6 @@ Build
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kas build meta-arm/kas/corstone1000-${TARGET}.yml:meta-arm/ci/debug.yml:meta-arm/kas/corstone1000-extsys.yml
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.. warning::
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**The Ethos-U85 Neural Processing Unit (NPU) is only available on
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the Corstone-1000 with Cortex-A320 FVP.**
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To build the Corstone-1000 image with the Ethos-U85 NPU enabled, run:
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.. code-block:: console
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kas build meta-arm/kas/corstone1000-fvp.yml:meta-arm/ci/debug.yml:meta-arm/kas/corstone1000-a320.yml
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A clean build takes a significant amount of time given that all of the development machine utilities are also
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built along with the target images. Those development machine utilities include executables (Python,
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CMake, etc.) and the required toolchains.
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@@ -493,14 +479,9 @@ Corstone-1000 FVP software image.
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A Yocto recipe is provided to download the latest supported FVP version.
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The recipe is located at ``${WORKSPACE}/meta-arm/meta-arm/recipes-devtools/fvp/fvp-corstone1000.bb``.
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This recipe supports selecting different Corstone‑1000 FVP models via MACHINE_FEATURES:
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- ``cortexa320`` use the Cortex-A320 Host Processor with Ethos U85 enabled FVP build
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- (default) use the Cortex-A35 Host Processor with Cortex-M3 External System FVP build
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The latest FVP version is ``11.23.25`` for Corstone-1000 with Cortex-A35 and ``11.30.27`` for
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Corstone-1000 with Cortex-A320, and each model is automatically downloaded and installed when using
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the ``runfvp`` command as detailed below.
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The latest FVP version is ``11.23.25`` and is automatically
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downloaded and installed when using the ``runfvp`` command as detailed below.
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.. note::
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@@ -2168,42 +2149,21 @@ Symmetric Multiprocessing
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.. warning::
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Symmetric multiprocessing (SMP) mode is supported on Corstone-1000
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with Cortex-A35 FVP and Corstone-1000 with Cortex-A320 FVP, but is disabled by default.
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Symmetric multiprocessing (SMP) mode is supported on FVP but is disabled by default.
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#. Build the software stack with SMP mode enabled:
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#. Build the software stack with SMP mode enabled.
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For Corstone-1000 with Cortex-A35 FVP:
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.. code-block:: console
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.. code-block:: console
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kas build meta-arm/kas/corstone1000-fvp.yml:meta-arm/ci/debug.yml:meta-arm/kas/corstone1000-multicore.yml
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For Corstone-1000 with Cortex-A320 FVP:
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.. code-block:: console
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kas build meta-arm/kas/corstone1000-fvp.yml:meta-arm/ci/debug.yml:meta-arm/kas/corstone1000-a320.yml:\
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meta-arm/kas/corstone1000-multicore.yml
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#. Run the Corstone-1000 FVP.
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For Corstone-1000 with Cortex-A35 FVP:
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.. code-block:: console
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kas shell meta-arm/kas/corstone1000-fvp.yml:meta-arm/ci/debug.yml:meta-arm/kas/corstone1000-multicore.yml \
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-c "../meta-arm/scripts/runfvp"
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For Corstone-1000 with Cortex-A320 FVP:
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.. code-block:: console
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kas shell meta-arm/kas/corstone1000-fvp.yml:meta-arm/ci/debug.yml:meta-arm/kas/corstone1000-a320.yml:\
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meta-arm/kas/corstone1000-multicore.yml \
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-c "../meta-arm/scripts/runfvp"
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#. Verify that the FVP is running the Host Processor with more than one CPU core:
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.. code-block:: console
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@@ -2211,78 +2171,6 @@ Symmetric Multiprocessing
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nproc
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4 # number of processing units
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Ethos-U85 NPU
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-------------
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.. warning::
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The Ethos-U85 NPU is only supported on Corstone-1000 with Cortex-A320 FVP.
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#. Clone the `iot-platform-assets` repository to your ``${WORKSPACE}``.
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.. code-block:: console
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cd ${WORKSPACE}
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git clone https://git.gitlab.arm.com/arm-reference-solutions/iot-platform-assets.git \
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-b CORSTONE1000-2025.12
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#. Copy the additional kas configuration file to:
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.. code-block:: console
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cp ${WORKSPACE}/iot-platform-assets/corstone1000/ethos-u85_test/ethos-u85-test.yml \
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${WORKSPACE}/meta-arm/kas/
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#. Copy the mesa package Git patch file to your copy of meta-arm.
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.. code-block:: console
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cp -f ${WORKSPACE}/iot-platform-assets/corstone1000/ethos-u85_test/0001-arm-bsp-mesa-Package-Teflon-test-runner-and-models.patch \
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${WORKSPACE}/meta-arm/
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#. Apply the Git patch to meta-arm.
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.. code-block:: console
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cd ${WORKSPACE}/meta-arm/
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git apply 0001-arm-bsp-mesa-Package-Teflon-test-runner-and-models.patch
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cd ${WORKSPACE}
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#. Re-Build the Corstone-1000 with Cortex-A320 FVP software stack as follows:
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.. code-block:: console
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kas build meta-arm/kas/corstone1000-fvp.yml:meta-arm/ci/debug.yml:meta-arm/kas/corstone1000-a320.yml:\
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meta-arm/kas/ethos-u85-test.yml
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#. Run the Corstone-1000 with Cortex-320 FVP:
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.. code-block:: console
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kas shell meta-arm/kas/corstone1000-fvp.yml:meta-arm/ci/debug.yml:meta-arm/kas/corstone1000-a320.yml:\
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meta-arm/kas/ethos-u85-test.yml \
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-c "../meta-arm/scripts/runfvp"
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#. To verify you are running the Corstone-1000 with Cortex-A320, build and run the FVP and inspect the CPU model
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reported in ``/proc/cpuinfo`` as shown below. Inside the FVP shell, confirm the core type:
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.. code-block:: console
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grep -E 'CPU part|model name' /proc/cpuinfo
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# Expect: CPU part : 0xd8f (which corresponds to Cortex-A320)
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#. Run the `test_teflon` test application inside the FVP shell as follows:
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.. code-block:: console
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export TEFLON_TEST_DELEGATE=/usr/lib/libteflon.so
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export TEFLON_TEST_DATA=/usr/share/teflon/tests
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test_teflon --gtest_filter='Models.*'
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The test completes in approximately one minute.
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Secure Debug
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------------
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