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Merge patch series "vepxpress64: disable CRC32 by default and add FVP with TF-A guide"

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Harrison Mutai <harrison.mutai@arm.com> says:

This patch introduces two updates to the vexpress64 project:

- Disable CRC32 by default to prevent aborts in a standard FVP setup.
- Add a guide for running FVP with TF-A, providing a clear starting point for
  users.

Link: https://lore.kernel.org/r/20250304165204.53097-1-harrison.mutai@arm.com
This commit is contained in:
Tom Rini
2025-03-18 08:12:40 -06:00
parent c342f27711 c4b48b0a6b
commit 75d1ac298a
2 changed files with 53 additions and 2 deletions
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1
configs/vexpress_fvp_defconfig
View File

@@ -2,4 +2,5 @@ CONFIG_ARM=y
CONFIG_ARCH_VEXPRESS64=y
CONFIG_DEFAULT_DEVICE_TREE="arm_fvp"
CONFIG_IDENT_STRING=" arm_fvp"
# CONFIG_ARM64_CRC32 is not set
# CONFIG_DISPLAY_CPUINFO is not set

54
doc/board/armltd/vexpress64.rst
View File

@@ -19,6 +19,11 @@ view", which gives a comprehensive model on which to build and test software.
The supported FVPs are available free of charge and can be downloaded from the
Arm developer site [1]_ (user registration might be required).
The Architecture Envelope Models (AEM) FVPs offer virtual platforms for Armv8-A,
Armv9-A, and Armv8-R architectures, including a comprehensive set of System IP.
For general use though, the Armv8-A Base Rev C FVP, which emulates a generic 64-bit
Armv8-A hardware platform, is a suitable option.
Supported features:
* GICv3
@@ -31,6 +36,50 @@ into the TF-A build: ``make PLAT=<platform> all fip BL33=u-boot.bin``
The FVPs can be debugged using Arm Development Studio [2]_.
Building U-Boot
^^^^^^^^^^^^^^^
Set the ``CROSS_COMPILE`` environment variable as usual, and run:
.. code-block:: bash
make vexpress_fvp_defconfig
make
Running U-Boot
^^^^^^^^^^^^^^
Set ``CROSS_COMPILE`` as usual and build TF-A:
.. code-block:: bash
git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git
cd trusted-firmware-a
make PLAT=fvp BL33=/path/to/u-boot.bin fiptool all fip
This command generates the ROM image `bl1.bin`, and a boot image `fip.bin` in
TF-A's FIP format [5]_. It contains all images executed by TF-A, including U-Boot.
Note that TF-A outputs the built binaries into `build/fvp/release/`.
If you already have a FIP image, and are primarily interested in updating the BL33
image (i.e., U-Boot), use `fiptool` from TF-A:
.. code-block:: bash
make fiptool
tools/fiptool/fiptool update --nt-fw=/path/to/u-boot.bin /path/to/fip.bin
To run the FVP:
.. code-block:: bash
FVP_Base_RevC-2xAEMvA -C bp.flashloader0.fname=fip.bin \
-C bp.secureflashloader.fname=bl1.bin \
-C bp.vis.disable_visualisation=1
This setup relies on semi-hosting, as well as, having a kernel image (``Image``)
and ramdisk (``ramdisk.img``) in the current working directory.
Juno
----
@@ -62,7 +111,8 @@ tables.
References
----------
.. [1] https://developer.arm.com/tools-and-software/simulation-models/fixed-virtual-platforms
.. [1] https://developer.arm.com/Tools%20and%20Software/Fixed%20Virtual%20Platforms/Arm%20Architecture%20FVPs
.. [2] https://developer.arm.com/tools-and-software/embedded/arm-development-studio
.. [3] https://developer.arm.com/tools-and-software/development-boards/juno-development-board
.. [4] https://trustedfirmware-a.readthedocs.io/
.. [4] https://trustedfirmware-a.readthedocs.io/
.. [5] https://trustedfirmware-a.readthedocs.io/en/latest/getting_started/image-terminology.html#firmware-image-package-fip