Release History

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.

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Fast Models

Version 11.4.2

Released: September 13, 2018

What's new in 11.4.2

New features and enhancements

  • Generic Graphics Accelerator (GGA) and GPU models have been restored.
  • Added support for Mali-G76 register model.

Release Note for Release History 11.4.2

Detailed documentation can be found in the 'Docs' subfolder for Fast Models Portfolio.

A significant number of the examples in Fast Models Portfolio 11.4.2 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 will mean that examples that require Dhrystone or the Linux images will not be functional, as well as examples using Accellera SystemC 2.3.1.

Enhancements and Changes in Fast Models Portfolio 11.4.2

GGA (Generic Graphics Accelerator) and GRM (Graphics Register Model) can work together to help graphics software stack verification in Fast Models 11.4.2. GRM implements ARM Mali graphics hardware without shader support and it can work with or without GGA. With GGA support, the end-user can view the rendering result in the Fast Models visualization window, and can use the error code checking feature to verify app correctness.

New in this release:

Added support for Mali-G76 register model. The model supports integrating the Mali Software DDK and running OpenGL ES client applications on the model. See "Integration Guidance for GRM" for more information about incorporating a GPU model.

Graphics APIs supported:

  • GLES
    • v2.0
    • v3.0
    • v3.1
  • Vulkan
    • 1.0.42

Preferred host GPU hardware and driver:

  • If the target implements OpenGL ES APIs without Vulkan, the host can use any of the following graphics cards with drivers that support OpenGL 4.3 and above:
    • The preferred graphics card is NVIDIA GTX 1050 with driver versions:
      • 340.96 and above for Ubuntu
      • 340.66 and above for Windows
    • AMD graphics card R7 240 with driver versions:
      • 15.30 and above released by AMD officially, for Ubuntu.
      • 15.12 and above for Windows.
    • Intel HD graphics card HD Graphics 530 with driver versions:
      • Not available for Ubuntu.
      • for Windows.
  • To support Vulkan APIs, the preferred graphics card is NVIDIA GTX 1050 graphics card with driver versions:
    • 384.59 and above for Ubuntu.
    • 384.94 and above for Windows.

Target GPUs supported for GRM:

  • Mali-G76
  • Mali-G71
  • Mali-G72.
  • Mali-G51. Verified with bifrost-kernel r7p0-01rel0 and corresponding gralloc module

Integration guidance for GRM:

  • The source code for the SGM-775 System Guidance Mobile platform is provided as an example. This platform incorporates the Mali-G72 GRM, and illustrates how the model can be integrated into a platform. All supported GPU models have identical interfaces to the Mali-G72. The sources can be found at FastModelsPortfolio_11.4/examples/LISA/CSS/Build_Kits3_SGM_775_Example.

  • Firmware and scripts for booting this platform are not included in this distribution, but can be obtained directly from Arm by following the instructions at Note that the firmware distribution scripts support only Linux as a host platform.

  • The Mali Graphics DDK source and builds can be obtained at IP/Graphics.


  • 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 from Fast Models in a future release.

  • Support for compiler Visual Studio 2013 will be removed in the Nov '18 release.

  • Support for compilers GCC-4.8.3 and GCC-4.8.4 will be removed in the Nov '18 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 example platform FVP_Base_AEMv8A-AEMv8A-DP550-V61 will be removed in the next release.

Compilers and Operating Systems supported by Fast Models

  • RedHat 6
  • RedHat 7
  • Ubuntu 14.04
  • Ubuntu 16.04
  • Windows 7
  • Windows 10
  • GCC-4.8.3 and GCC-4.8.4
  • GCC-4.9.2
  • GCC-5.4.0
  • GCC-6.4.0
  • Visual Studio 2013 - Update 4
  • Visual Studio 2015 - Update 3
  • The following warning is produced when compiling Fast Models with Visual Studio 2015: Unknown compiler version - please run the configure tests and report the results. This occurs due to the Accellera SystemC library using an older version of the Boost library which is not aware of any versions after Visual Studio 2013.

FLEXnet license management utilities

FLEXnet server binaries are no longer shipped with the product; if you need them, download them from

Release 11.4.2 of Fast Models requires a newer version of the FLEXnet license management utilities. If you are using floating licenses, you need to upgrade to version (or later) of the FLEXnet license management utilities. Prior versions are not compatible.

License queueing support

When using floating licenses, if all available licenses are in use, models and tools can be configured to queue until a license is available. This is enabled by setting the environment variable FM_LICENSE_QUEUE_TIMEOUT to a timeout value in seconds. The default value of 0 disables this feature.

Note that enabling this feature may cause model initialisation to take a long time, as models will wait for a license to become available until the timeout period expires, rather than failing immediately.

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 16.12 for v8-A platforms and Android 15.03 for v7-A platforms.

The command lines tested are:

  • v8-A:

    FVP_Base_AEMv8A-AEMv8A \
    -C pctl.startup= -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= -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)
  • v7-A:

    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)

Outstanding CTModel issues

  • Models only support some types of memory breakpoints. Currently the error message returned if an unsupported type is used may not clearly indicate that the breakpoint type is unsupported.

  • CADI methods deprecated for use in Fast Models 11.4.2:

    • CADICallbackObj
      • appliOpen()
      • appliClose()
      • cycleTick()
      • killInterface()
  • When attempting to debug an ISIM system, if you launch Model Debugger from System Canvas and then specify an application to load this causes an error in Model Debugger (Error using application...), and the model and application fail to load.

    Workaround: Launch Model Debugger without specifying an application, and then load the application from within Model Debugger itself using File -> Load Application Code.

  • A15 bus transactions are not bus accurate.

  • CADI and MTI names for CP15 registers are different.

  • Cache state modelling configuration is now verified at simulation start and the simulation will exit with an error message if an incorrect configuration is detected in the platform. For example:

    Error: MyPlatform: Incompatible Cache Configuration
    Cache state modelling is on in my_platform.cci
    Cache state modelling is off in my_platform.core.l2_cache
  • PVBus Fan out is not supported and a bus decoder is required in order to do this.

  • When semi-hosting is enabled on SystemC model and a read from stdin is done within the target software, the semi-hosting call from CADI does not originate from the SystemC thread. Consequently the complete simulation becomes blocked if the semi-hosting call cannot complete due to no user input.

  • Cache models may output debug messages on stderr even with --quiet.

  • The Watchpoint mask does not have the expected effect.

  • When writing to MDSCR_EL1.SS on AEMv8A, it does not change status until an ERET is executed. This should be consistently managed by the has_delayed_sysreg parameter.

  • 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.

  • The shareable override functionality of CCI400 does not work. The slave interface shareable override register exists and may be read and written but has no functionality.

  • The value of cpu.register_reset_data and cpu.scramble_unknowns_at_reset should be reflected in the bits of CNTHCTL_EL2 which reset value is UNKNOWN.

  • When EL3 == AArch32 and executing in AArch32 Secure EL1 (SVC_s), an update of the CNTP_CTL_S causes the tarmac log to print an update of CNTPS_CTL_EL1.

  • Breakpoints must be set after loading the image to be run, otherwise these will not be hit during execution even if the addresses are accessed.

  • Cortex-A53, A35 and A32 lack the Advanced SIMD Engine-present parameter.

  • A17 BROADCAST parameters should be at cluster level, not cpu level.

  • CADIExecReset is no longer supported and CADIExecGetResetLevels does not throw an error.

  • DynamIQ does not support all cluster models.

Outstanding tools issues

  • ModelDebugger 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.

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