The latest Fast Models release version is reported at the top right of this page.
Details on What's New, and links to the Release Notes are provided below.
Subscribe to the Changelog RSS feed to receive alerts when future Fast Models releases become available.
What's new in 11.11.1
New features and enhancements
- Fixed a fatal error when connecting the GIC-600 in a multichip configuration.
- Enabled SVE2 in the Foundation Platform and Base Platform RevC FVPs.
- Corrected an occasional internal fault (segfault) at model startup.
Release Note for Release History 11.11.1
This is an incremental build of Fast Models 11.11. We are making the Fast Models 11.11.1 point release to fix the following issues:
- Fixed a fatal error when connecting the GIC-600 in a multichip configuration.
- Missing SVE2 functionality in the Foundation Platform and Base Platform RevC FVPs. SVE2 is now enabled and the models can be downloaded at Armv8-A Architecture Envelope Models (AEM)
- Corrected an occasional internal fault (segfault) at model startup due to incorrect handling of a failure mode within the event backend.
If you have questions about any of these issues, please contact firstname.lastname@example.org.
The next Fast Models release (11.12) is planned for the second half of September 2020.
Fast Models Portfolio 11.11 Release Notes (replicated here for convenience)
Detailed documentation can be found in the Docs subfolder for Fast Models Portfolio and at https://developer.arm.com/products/system-design/fast-models/docs.A significant number of the examples in Fast Models Portfolio 11.11 make use of images containing third party IP. These have been split out into a separate 'Third Party IP' package that can be downloaded from:
Not installing these images means that examples that require Dhrystone or the Linux images will not be functional, as well as examples using Accellera SystemC.
Enhancements and changes in Fast Models Portfolio 11.11
Support for Custom Datapath Extension (CDE) for Armv8-M and example plugins for generating custom instructions for Cortex-M33.
Support for the Cortex-A78 and Cortex-X1 CPUs.
The supported Accellera SystemC version is now 2.3.3.
If you are using floating licenses, this version of Fast Models requires FLEXnet server version 126.96.36.199 or later. See instructions below for obtaining the server.
Windows 7 support has been removed. See the list of supported host operating systems below.
We are delaying the end of life of the CADI debug interface past our Q2 2020 release to give users more time to transition. The new end of life date will likely be our Q4 2020 release. The new date will be confirmed in our release note at least one quarter prior to removal.
We are deprecating support for PyCADI and removing support in the Q2 2020 release. PyCADI will be replaced by iris.debug. Refer to the documentation for information on migrating from fm.debug to iris.debug: Iris Python Debug Scripting User Guide.
The planned removal of GCC 4.9.2 has been extended to the Q4 2020 Fast Models release. The Q3 Fast Models release will be the last release to support GCC 4.9.
Visual Studio 2015 will be removed in the Q3 2020 Fast Models release.
RHEL6 will be removed in the Q3 2020 Fast Models release.
The folder structure in FastModelsPortfolio will be refactored in a future release.
The default parameter values for HostBridge and VirtioNet will change in a future release.
Model Shell and the related SimGen target (TARGET_MAXVIEW) are deprecated. They will be removed in a future release.
The zstdint.h and zinttypes.h supplied headers are deprecated and will be removed from the product in the future. Use the standard cstdint and cinttypes files instead.
The TxThread.h and TxRunnable.h supplied headers, and the TxThread and TxRunnable types, are deprecated and will be removed from the product in the future. Use the standard library thread facilities instead.
Support for MxScript will be removed from Model Debugger in a future release. Use Iris Python Debug Scripting instead.
Fast Models limitations
This section contains information on limitations for models that are new in this release or new limitations that have been identified for existing models.
For more information, refer to the Fast Models Reference Manual at https://developer.arm.com/docs/100964/latest.
Improvements to ClockTimer component to ensure clocks run correctly when switching frequencies:
Previously, it was possible for a Clock component to run even if the connection to the clk_in input was missing. This is no longer possible and designs that erroneously relied on the old behavior might not function correctly. For example, software running on the design might hang.
For flexible Cortex-A55+Cortex-A75 clusters, there is a known issue related to presentation of parameters and CADI targetNames to CADI clients when cpu instances in the first subcluster are configured to be less than 4. CADI targetNames and parameters for cpu[0-3] are always shown from the Cortex-A55 subcluster, when viewed by CADI clients.
DMC-620 Dynamic Memory Controller Fast Model:
- No support for address striping.
- Works with linear addresses and not in rank,bank,row,column form.
- Includes error injection and detection mechanisms and syndrome registers support only for 2 out of the 6 RAS error types.
- Scrubbing functionality is not provided.
- Does not implement direct read or write commands.
- Does not implement any performance counters.
CMN-600 Coherent Mesh Network:
- The model implements version r1p1 of the RTL specification and includes CAL (Component Aggregation Layer) functionality that was added in r3p0.
- The model supports a new revision parameter to select between r1p1 and r3p0 implementations.
- CAL r2 and r3 features are supported. Further testing of these features is planned.
- The following CML (Coherent Multi-chip Links) r3 features are supported:
- LDID-based CML routing
- CCIX port aggregation support
Pipeline Model plug-in:
For the InOrder PipelineModel source example plugin,
libtinfo-devneeds to be installed on Ubuntu 16.04.
The cp15sdisable port/parameter is removed from some cores that do not support AArch32 at EL3.
Compilers and Operating Systems supported by Fast Models
- RedHat 6 with GCC-6.4.0 and GCC-4.9.2.
- RedHat 7 with GCC-6.4.0 and GCC-4.9.2.
- Ubuntu 16.04 with GCC-6.4.0 and GCC-7.3.0.
- Ubuntu 18.04 with GCC-7.3.0.
- Windows 10 with Visual Studio 2015 - Update 3 and Visual Studio VS2017 - version 15.9.11 or later.
- Visual Studio 2017. The following Visual Studio 2017 components are required:
- Visual C++ ATL for x86 and x64.
- Visual C++ MFC for x86 and x64.
Hardware requirements for Generic Graphics Accelerator (GGA)
GGA has been validated on the NVIDIA GT 730 or later graphics cards with the following driver versions:
- 390.77 and above for Ubuntu.
- 390.77 and above for Windows.
FLEXnet license management utilities
FLEXnet server binaries are no longer shipped with the product; if you need them, download them from https://developer.arm.com/products/software-development-tools/license-management/downloads.
If you are using floating licenses, Fast Models 11.11 requires FLEXnet server version 188.8.131.52 or later. Please plan to upgrade your license server accordingly.
Linaro images and command lines tested in this release
All A-profile platforms available in this release have been validated against the following Linaro images: Android 18.07 for v8-A platforms and Android 15.03 for v7-A platforms.
The command lines tested are:
FVP_Base_AEMv8A-AEMv8A \ -C pctl.startup=0.0.0.0 -C bp.secure_memory=0 -C cache_state_modelled=0 -C bp.pl011_uart0.untimed_fifos=1 \ -C bp.secureflashloader.fname=bl1.bin -C bp.flashloader0.fname=fip.bin \ -C bp.ve_sysregs.mmbSiteDefault=0 -C bp.virtioblockdevice.image_path=fvp.img \ --data cluster0.cpu0=Image@0x80080000 \ --data cluster0.cpu0=fdt.dtb@0x82000000 \ --data cluster0.cpu0=ramdisk.img@0x84000000
EVS_Base_AEMv8A-AEMv8A.x \ -C Base.pctl.startup=0.0.0.0 -C Base.bp.secure_memory=0 -C Base.cache_state_modelled=0 -C Base.bp.pl011_uart0.untimed_fifos=1 \ -C Base.bp.secureflashloader.fname=bl1.bin -C Base.bp.flashloader0.fname=fip.bin \ -C Base.bp.ve_sysregs.mmbSiteDefault=0 -C Base.bp.virtioblockdevice.image_path=fvp.img \ --data Image@0x80080000 \ --data fdt.dtb@0x82000000 \ --data ramdisk.img@0x84000000(This command line is also valid for SVPs)
FVP_VE_Cortex-A15x1-A7x1 \ -C motherboard.flashloader0.fname=boot/rtsm/uefi_rtsm_ve-ca15.bin -C motherboard.flashloader1.fname=uefi-vars.fd \ -C motherboard.flashloader1.fnameWrite=uefi-vars.fd -C motherboard.mmc.p_mmc_file=linaro.img \ -C motherboard.pl011_uart0.unbuffered_output=true -C motherboard.smsc_91c111.enabled=1 \ -C motherboard.hostbridge.userNetworking=1
EVS_LinuxBoot_Cortex-A15x2 \ -C Base.motherboard.flashloader0.fname=boot/rtsm/uefi_rtsm_ve-ca15.bin -C Base.motherboard.flashloader1.fname=uefi-vars.fd \ -C Base.motherboard.flashloader1.fnameWrite=uefi-vars.fd -C Base.motherboard.mmc.p_mmc_file=linaro.img \ -C Base.motherboard.pl011_uart0.unbuffered_output=true -C Base.motherboard.smsc_91c111.enabled=1 \ -C Base.motherboard.hostbridge.userNetworking=1(This command line is also valid for SVPs)
On Windows hosts, a Linux target OS running Wayland has known issues.
No log output from an FVP using
--iris-logoption. There is a workaround by setting the environment variable
IRIS_GLOBAL_INSTANCE_LOG_MESSAGES=1to enable logging.
Setting R52 flash and llpp size to zero is not sufficient to make them unrouteable.
Models only support some types of memory breakpoints. Currently the error message returned if an unsupported type is used might not clearly indicate that the breakpoint type is unsupported.
CADI methods deprecated for use in Fast Models 11.11:
A15 bus transactions are not bus accurate.
CADI and MTI names for CP15 registers are different.
When semihosting is enabled on a SystemC model and a read from stdin is done within the target software, the semihosting call from CADI does not originate from the SystemC thread. Consequently the complete simulation becomes blocked if the semihosting call cannot complete due to no user input.
In some circumstances, the model will boot more slowly when an operating system filesystem image is used in read-only mode. The workaround is to make sure that the image is writeable.
Cortex-A53, Cortex-A35 and Cortex-A32 lack the Advanced SIMD Engine-present parameter.
BROADCASTparameters should be at the cluster level, not at the cpu level.
DynamIQ does not support all cluster models.
On Linux, a program that dynamically loads a model shared object file using dlopen() must be linked with the pthread library (-lpthread), even if the program is otherwise single-threaded. Failure to do so may result in a segmentation fault, or other abnormal termination, possibly with the message 'Enable multithreading to use std::thread: Operation not permitted', depending on the libstdc++ version. The underlying defect is a libstdc++ bug (#67791) which has been exposed by migrating the model to C++11 threads.
CCN5xx models do not expose CCNCache sub-component parameters in System Canvas.
Outstanding tools issues
Model Debugger does not display the correct values for wTasKMaskId.
The Cortex-M0 model exposes a VTOR register via CADI, but this register in not present in hardware.
On Windows, .bmp files are copied into the top Build folder for FVP_MPS2 models. They are not accessible to the isim_system generated in the internal platform/flavor dependent folder. An easy workaround is to manually copy them into that folder.
Neoverse-N1/Neoverse-E1 Fast Models:
- DBGEN, SPIDEN, NIDEN, and SPIDEN signals in the model have per-core instances instead of per-cluster.
- The cfgsdisable signal will be removed in a future release.
Feedback on this product
If you have any comments or suggestions about this product, contact email@example.com and give:
The product name.
The product revision or version.
An explanation with as much information as you can provide. Include symptoms and diagnostic procedures if appropriate.