Quick-Start Platform x86 Release Notes

1 Introduction

This document identifies important information for the Quick-Start Platform x86 package for Simics 6. All users of this specific package should review this document carefully.

2 Changes Since Version 6.0.0

The following is a list of changes since the initial 6.0.0 release.

• 6.0.73 (build 6257)

  • CPU generic
    • Linux only: If the kernel supports Transparent Huge Pages (THP), the JIT code area now makes use of 2MB TLB mappings. This could slightly increase execution performance.
  • X58 devices
    • Improved handling of flushing in x58-dmi and x58-remap-unit.

• 6.0.72 (build 6244)

  • QSP-x86
    • Updated required flags on target parameters to work with the new default value introduced in Simics-Base 6.0.173.
  • X58 ICH10 Hierarchical Components
    • Removed use of deprecated Python modules, this now requires Simics-Base version 6.0.168 or later.

• 6.0.71 (build 6235)

  • QSP-x86
    • Updated BIOS to support setting VGA GFX mode (bug #HSD-1807922670) in connection with a special device used in the qsp-x86/uefi-shell target. The new BIOS version is SIMICSX58IA32X64_1_3_0_r.fd and it replaces all uses of SIMICSX58IA32X64_1_2_0_r.fd which hence has been removed from the package.

• 6.0.70 (build 6233)

  • CPU generic
    • An issue with an internal cache was fixed. The fix considerably improves simulation performance in certain cases.

• 6.0.69 (build 6231)

  • QSP-x86
    • The package now contains a file third-party-programs.txt with a list of third party software included in the package.
    • Restructured the target parameter hierarchy and renamed parameters to align with RISC-V-Simple (bug #SIMICS-21108).

• 6.0.68 (build 6223)

  • QSP-x86
    • Fixed clear-linux target parameters to allow turning off the network.

• 6.0.67 (build 6213)

  • QSP-x86
    • Added new BIOS SIMICSX58IA32X64_1_2_0_r.fd that enables both serial and graphical console for UEFI BIOS menu and UEFI Shell. It also shortens the boot timeout from 50s to 3s and moves some ACPI NVS allocations to higher memory regions to increase the size of contiguous useable RAM below 1 GiB. The BIOS is used by the QSP by default when started via the new style target system.
    • Added the user-provided-linux target that allows to conveniently boot a custom Linux by setting the path to a kernel image and (optionally) an initrd, a rootfs, and a kernel command line.

• 6.0.66 (build 6209)

  • QSP-x86
    • New style targets are now included in the package.

• 6.0.65 (build 6191)

  • QSP-x86
    • The BIOS used by the QSP has been updated to use a more recent state of the EDK2 sources. The previous (1_0_0_bp_r) and the new (1_1_0_r) version can both be found in targets/qsp-x86/images. By default, the QSP uses the new version. If your target SW requires the use of the old version, you need to explicitly set $bios_image to point to it.
    • The mapping of the device $system.mb.conf of class pc-config at address 0x402 in the IO space has been removed, because its mapping conflicted with power management registers in the LPC, which led to error messages during some OS boots. The removed mapping was used as a shortcut to generate Simics log messages from within target SW and had no relationship to any real HW device. If target SW used this shortcut it should rather use the mapping of the same function at 0xfff0 instead of 0x402.
    • The DSDT as provided by the updated BIOS now has a second PCI bridge resource window for memory mappings from 0x8_0000_000 to 0xB_0000_0000. This fixes an issue where larger PCI memory regions could not fit into the existing window and were hence deactivated by the target's Linux.
  • X58 devices
    • It is now possible to connect custom remap units in the x58-core, through the attribute external_remap_unit (bug #HSD-18018935731).

• 6.0.64 (build 6190)

  • X58 devices
    • Rework source-code to use map_target template from utility.dml.

• 6.0.63 (build 6181)

  • CPU generic
    • Temporarily rolled back minimum host processor requirements to Nehalem, since some systems need more time to migrate to match the official Haswell requirement (bug #HSD-18024604079).

• 6.0.62 (build 6179)

  • CPU generic
    • The instrumentation for System Management Mode (smm_instrumentation_subscribe interface) does not block VMP execution anymore, (bug #SIMICS-19625).

• 6.0.60 (build 6162)

  • x86 CPUs
    • Three new instrumentation interfaces have been added: x86_instrumentation_subscribe_v2, vmx_instrumentation_subscribe, and smm_instrumentation_subscribe. This is needed for (bug #SIMICS-14965).

• 6.0.59 (build 6152)

  • CPU generic
    • All CPUs have been updated to issue transactions to the memory space connected to the physical_memory attribute through the transaction interface, instead of sending memory transactions through the memory_space interface.

• 6.0.58 (build 6150)

  • CPU generic
    • Simics now stops with an error, instead of a message, if the event queue overflows

• 6.0.57 (build 6147)

  • QSP-x86
    • The unused parameter enable_efi has been removed.

• 6.0.56 (build 6144)

  • CPU generic
    • Parallel JIT compilation: JIT blocks compiled, but later rejected for insertion, previously leaked a resource. This has now been fixed. If many blocks were rejected, the lack of resources caused a reduced amount of blocks could be compiled, and eventually no blocks where compiled at all (bug #HSD-14015758898).

• 6.0.55 (build 6142)

  • QSP-x86
    • The package no longer contains .pyc files, and now requires Simics-Base version 6.0.114 or later.

• 6.0.54 (build 6141)

  • CPU generic
    • Instrumentation: fixed an assertion error for processor models without JIT support. This previously happened when calling the instruction_query->logical_address() method (bug #HSD-1309492050).

• 6.0.53 (build 6133)

  • x86 CPUs
    • Callbacks from the register_instruction_decoder_cb method in the cpu_instrumentation_subscribe interface did not get enough bytes to decode an instruction if the instruction was crossing page boundary. This is now fixed.

• 6.0.52 (build 6131)

  • X58 devices
    • Fixed a bug that duplicated VTBAR mappings when restoring a checkpoint.
  • x86 CPUs
    • Callbacks from the register_illegal_instruction_cb method in the x86_instrumentation_subscribe interface did not get enough bytes to decode an instruction if the instruction was executed from a non-cacheable memory. This is now fixed (bug #HSD-22012278089).

• 6.0.51 (build 6128)

  • CPU generic
    • Fixed a bug that prevented VMP to be reengaged after all instrumentation callbacks have been removed (bug #SIMICS-10259).

• 6.0.50 (build 6126)

  • QSP-x86
    • A very simple processor core timing model, sample-core-timing has been added. The script qsp-sample-core-timing.simics demonstrates how it can be used.

• 6.0.48 (build 6119)

  • QSP-x86
    • The QSP-x86 now uses the new PCIe libraries, including the pcie-downstream-port-legacy. The minimum required version of Simics-Base is now 6.0.103
  • X58 Base Functionality
    • Renamed module to X58-legacy to make room for new module with devices ported to new PCIe library
  • X58 ICH10 Hierarchical Components
    • The PCIe devices on the northbridge have been replaced with new versions, using the new PCIe libraries. This also resolves a reset issue with the PCIe devices attached to the socket bus (bug #SIMICS-9363).
  • X58 devices
    • Initial port of X58 devices to new PCIe libraries

• 6.0.46 (build 6110)

  • Common
    • Simics no longer comes with documentation in PDF format.

• 6.0.45 (build 6106)

  • ICH Base Functionality
    • Fixed bug when LPC was disconnected from the PCIe bus but didn't remove its mappings.

• 6.0.44 (build 6098)

  • CPU generic
    • Added support for obtaining the CPU frequency from an object implementing the frequency interface.

• 6.0.42 (build 6095)

  • x86 CPUs
    • Reading the PC from an instrumentation memory callback issued by a vector instruction could sometimes return an old PC value, this is now fixed (bug #HSD-22012278089).

• 6.0.41 (build 6091)

  • QSP-x86
    • Updated target scripts to use breakpoint commands from bp-manager. The minimum required version of Simics-Base is now 6.0.62

• 6.0.40 (build 6086)

  • QSP-x86
    • The simics-pcie-demo-driver was recompiled so that binary and source match.

• 6.0.39 (build 6084)

  • QSP-x86
    • Scripts for booting from specified disk images, using the UEFI BIOS, are now distributed. The targets/qsp-x86/qsp-dvd-boot.simics script is similar to the earlier distributed DVD boot script, but now uses UEFI, and there is also targets/qsp-x86/qsp-usb-boot.simics for booting from a USB disk image, and targets/qsp-x86/qsp-hdd-boot.simics for booting from the hard disk using a bootable OS image file.

• 6.0.38 (build 6082)

  • Common
    • Documentation in HTML format has been added.

• 6.0.37 (build 6074)

  • QSP-x86
    • Removed assignment of the $bios_image variable from the qsp-system.include script. The script will terminate if $bios_image has not been set.

      The $bios_image is now set by setup.include or .simics scripts, as expected (bug #SIMICS-16236).

• 6.0.36 (build 6070)

  • QSP-x86
    • Introduced the writable_state_dir script parameter for easy use of the enable-writable-persistent-state command.

• 6.0.35 (build 6068)

  • CPU generic
    • Reduce the dynamic memory foot-print of automatic hypersim (even further) (bug #HSD-1507506841) and (bug #SIMICS-16237).

• 6.0.34 (build 6066)

  • x86 CPUs
    • Fixed an instrumentation bug where some memory-accesses was not shown in the "cached" instruction callbacks. To fix this, the x86_access_t enum values was changed a bit, but binary compatibility has been maintained as far as possible. This enum is distributed in the base-package's arch/x86.h. It is recommended to upgrade the base package and any modules depending on this file. Added a new x86_access_type interface to get hold of the textual representation (long and short) of the enum values (bug #SIMICS-16124).

• 6.0.33 (build 6063)

  • QSP-x86
    • A recently introduced performance degradation was fixed.

• 6.0.32 (build 6062)

  • QSP-x86
    • Added the missing PCIe demo target scripts on Windows.

• 6.0.31 (build 6060)

  • Intel e1000 Network Adapters
    • The EEC.AutoRD bit is now set by default to indicate that the auto EEPROM read has finished (bug #HSD-14012262984).

• 6.0.30 (build 6056)

  • x86 CPUs
    • Remove obsolete ASSERT(get_event_counter(cpu) >= 0) from monitor_helper (bug #HSD-1801172704).

• 6.0.29 (build 6054)

  • x86 CPUs
    • VMP can now use the hardware EPT when simulating a virtualization workload using EPT, which in many situations greatly improves performance. A VMXMON version 1.15.54 or later is needed for this feature to work. The performance enhancement can be turned off with the disable-vmp-feature nested_ept command.

• 6.0.28 (build 6050)

  • x86 CPUs
    • A problem with the VMP Intel® Virtual Machine Control Structure (Intel ® VMCS) implementation has been fixed. The issue manifested itself as random malfunctions when running virtualization workloads. The VMXMON kernel module (version 1.15.53) contains part of the fix (bug #SIMICS-15801).

• 6.0.27 (build 6043)

  • CPU generic
    • Correctly reduce the memory foot-print for automatic hypersim detection. The previous attempt was not working (bug #HSD-1507506841).
  • Common
    • Fixed a problem on Windows where the installer still asked for the Model Builder key (bug #SIMINT-1236).

• 6.0.26 (build 6040)

  • QSP-x86
    • The targets/qsp-x86/qsp-clear-linux-pcie-demo.simics target script runs on Windows host as well. Source code of the driver and test program is included.
  • x86 CPUs
    • The break-on-processor-reset and unbreak-processor-reset commands are now available on x86 processor cores (bug #SIMICS-13540).

• 6.0.25 (build 6039)

  • QSP-x86
    • Added targets/qsp-x86/qsp-clear-linux-pcie-demo.simics target script as well as binaries used by the scripts. It boots Clear Linux and operates a SystemC PCIe device for demo purpose.
  • x86 CPUs
    • The idle behavior for instructions like HLT and MWAIT and various wait states has been changed such that the step counter is not advanced while the CPU is idle. The old behavior, where both the step counter and the cycle counter were advanced, can be restored by setting the use_halt_steps attribute to TRUE (bug #SIMICS-8754).

• 6.0.24 (build 6037)

  • CPU generic
    • Made messages from the register-break command uniform with messages from other breakpoints (bug #SIMICS-15051).

• 6.0.23 (build 6033)

  • X58 ICH10 Hierarchical Components
    • Removed the ich10_lan class and the old_lan parameter in favor of ich10_lan_v2 (bug #SIMICS-14097).

• 6.0.22 (build 6032)

  • Common
    • Support for Python 2.7 has been removed. Simics now only embeds a Python 3 interpreter.

• 6.0.21 (build 6030)

  • Common
    • The separation of source code into separate packages has been removed. Source code is now included directly into each package.
  • x86 CPUs
    • Fixed a problem where instructions with the LOCK prefix could cause a Simics crash.
    • Fixed flags calculation for CMPXCHG instruction in D-STC hit case.
    • I/O instructions are executed identically in VMP, JIT and interpreter modes. Previously the instructions could set CPU stall, controlled by port_io_slow_cycles attribute, of different duration.

• 6.0.20 (build 6028)

  • CPU generic
    • Avoid huge memory consumption when doing automatic hypersim detection for large complex blocks (bug #HSD-1507506841).
  • Common
    • The installers for Linux and macOS have been updated. Support for fallback mode of decryption keys has been removed.

• 6.0.19 (build 6025)

  • x86 CPUs
    • Added missing NMI interrupt to the implementation of the exception interface, (bug #SIMICS-14623).

• 6.0.18 (build 6024)

  • x86 CPUs
    • Fixed performance regression caused by less JIT code generated (bug #SIMICS-14608).

• 6.0.17 (build 6023)

  • QSP-x86
    • The targets/qsp-x86/qsp-dvdboot.simics and targets/qsp-x86/qsp-pxe-boot.simics target scripts as well as SeaBIOS and SeaVGABIOS images used by the scripts are not distributed anymore. Please use older versions of the package if previously shipped target scripts and image files are needed or try Simics target scripts shipped in the package 2075 (Model Library: Intel® Core™ i7 with X58 and ICH10) (bug #SIMICS-14090).

• 6.0.16 (build 6022)

  • ICH Base Functionality
    • Fixed SPI flash checkpointing issue (bug #HSD-1808669046).
  • Intel e1000 Network Adapters
    • Fixed SPI flash checkpointing issue (bug #HSD-1808669046).

• 6.0.15 (build 6021)

  • QSP-x86
    • The targets/qsp-x86/qsp-clear-linux.simics target script was updated to get use the newer Clear Linux image file (if available). The updated Clear Linux image file is shipped in the 6.0.3 version of the QSP Clear Linux (4094) package.
    • The targets/qsp-x86/qsp-linux-common.simics and targets/qsp-x86/qsp-linux-multi.simics scripts creating configurations with a Yocto Linux image are not distributed anymore. Also, the Yocto Linux image is not distributed anymore. Please use older versions of the package if previously shipped target scripts and the image file are needed.

• 6.0.14 (build 6020)

  • Intel e1000 Network Adapters
    • Fixed an error in the multicast lookup algorithm implementation.

• 6.0.13 (build 6019)

  • ICH Base Functionality
    • A bug in the real-time clock device model was fixed. Previously, the device model could misinterpret the date and time set programmatically (bug #SIMICS-13777).

• 6.0.12 (build 6018)

  • CPU generic
    • Fixed an unusual problem where the JIT-compilation engine was disabled when failing to allocate memory with low addresses (only noticed with Python3 and Windows host). Now low address-allocation is not done anymore (bug #HSD-2208230108).
    • Remove assertion error checks from (enable/disable)_connection_callbacks methods in the cpu_instrumentation_subscribe interface. This could happen if the user has not yet installed any callback for a connection. Typically the implementation of enable/disable in the connection_interface would call this methods. Now it it is unnecessary to check whether any callbacks has been installed before calling this method. This only affects instrumentation usage available in package 1022 (bug #HSD-1808121154).
  • QSP-x86
    • The auto_login and auto_login_root parameters were added to the targets/qsp-x86/qsp-clear-linux.simics target script (bug #SIMICS-12561).
    • The UEFI firmware used by the targets/qsp-x86/qsp-clear-linux.simics target script was updated to a newer version. Among other things, the update includes a fix to the issue when boot sequence priority could change unexpectedly. The source code for the UEFI firmware used by Simics is now available at https://github.com/tianocore/edk2-platforms.
  • x86 CPUs
    • Simics no longer incorrectly requires that the TSS is accessible from the current processor mode when dispatching a task (bug #SIMINT-1092).

• 6.0.11 (build 6017)

  • x86 CPUs
    • Effective memory type is calculated for memory requests performed by PREFETCHh/PREFETCHW instructions and accompanying page walk.
    • Corrected effective memory type calculation for certain instruction fetch requests (bug #HSD-1806235254).
    • Add X86_Vmcs_Read and X86_Vmcs_Write haps corresponding to VMREAD and VMWRITE instructions. Add global and namespace variants of break-vmread, trace-vmread, break-vmwrite, trace-vmwrite commands to track Intel® Virtual Machine Control Structure (Intel ® VMCS) changes through VMREAD and VMWRITE instructions (bug #HSD-1409542905).

• 6.0.10 (build 6015)

  • QSP-x86
    • The targets/qsp-x86/qsp-clear-linux.simics target script was updated to get use the newer Clear Linux image file (if available). The updated Clear Linux image file is shipped in the 5.0.1 version of the QSP Clear Linux (4094) package.

• 6.0.9 (build 6014)

  • CPU generic
    • A bug in <cpu>.unbreak-register command was fixed. Previously, the command failed to delete a breakpoint in some cases.
  • X58 ICH10 Hierarchical Components
    • The RTC time-zone is now stripped from the rtc_time parameter to avoid triggering the deprecation warning when restoring from checkpoint (bug #SIMICS-12639).
  • x86 CPUs
    • The <x86>.print-vmx-cap command was fixed to work in Simics with Python 3.

• 6.0.8 (build 6013)

  • CPU generic
    • A new <cpu>.break-register command has been added, allowing the user to break both when general and control registers are updated. See the command for details. Note that this feature only exists for CPUs which supports the new CPU instrumentation interfaces. The command is added in simics-base rev 5.0.189. To use this new command, both simics-base and cpu packages need to be updated.
  • QSP-x86
    • The UEFI firmware used by the targets/qsp-x86/qsp-clear-linux.simics target script was updated to a newer version. The updated version includes fixes to system tables, improved virtualization support and a new logo on the boot screen (bug #HSD-1807875714).

• 6.0.7 (build 6012)

  • X58 ICH10 Hierarchical Components
    • Added warning for unsupported RTC time-zone format (bug #SIMICS-12639).

• 6.0.5 (build 6009)

  • CPU generic
    • Fixed a rare instrumentation bug where instruction-after callbacks might be missed in JIT generated code (bug #SIMICS-12789).
    • Fixed a bug in measurement of how many instructions that was executed in JIT. Previously, exceptions triggered inside the JIT block, caused too few instructions to be accounted for. This lead to system-perfmeter presenting incorrect JIT% figures (bug #SIMICS-9280).
  • QSP-x86
    • Previously, the value of the disk0_image parameter of the targets/qsp-x86/qsp-clear-linux.simics script was ignored because of the error in the script logic. This error was fixed.
  • x86 CPUs
    • Added support for accessing pdpte registers from int_register interface.
    • Fixed checkpointing of some CPU registers (bug #SIMICS-9218).
    • Fix the issue that, for 80186 processors, the command "si -r" does not show register changes for some registers (bug #SIMINT-1028).
    • A model bug was fixed: previously, the application processors did not enter "wait for SIPI" state after RESET signal was received (bug #SIMICSTS-18).

• 6.0.4 (build 6007)

  • Intel e1000 Network Adapters
    • Fixed a bug which occurred when attempting to access LAN flash primary region data registers at indices greater than 1 and less than 16.
  • QSP-x86
    • An absolute positioning mouse device is now added by default to the Clear Linux configuration.

• 6.0.3 (build 6006)

  • QSP-x86
    • New target script targets/qsp-x86/qsp-clear-linux.simics was added. It allows to boot Clear Linux OS on top of UEFI firmware. Clear Linux OS image is distributed separately in the Simics package 4094.

• 6.0.2 (build 6005)

  • Intel e1000 Network Adapters
    • Fixed handling of PTP packets (bug #SIMINT-1003).
  • X58 Base Functionality
    • x58_dmi device model was fixed to ignore writes to lower two bits of Configuration Space Address I/O port (bug #HSD-1806517538).

• 6.0.1 (build 6004)

  • Intel e1000 Network Adapters
    • Fixed calculation of TCP/UDP checksum for IPv6.
  • X58 Base Functionality
    • x58_dmi device model was fixed to handle inquiry accesses to Configuration Space Data I/O port (bug #HSD-1806494346).

3 Changes in version 6

• 6.0.0 (build 6003)

  • QSP-x86
    • New parameters show_con0, show_con1, show_gfx_con and hide_consoles have been added. These control the initial visibility of the text and graphics consoles.
    • The create_con0 and create_con1 parameters have been removed. The text consoles are now always created.
    • The new_consoles and con_type parameters have no meaning with the new target consoles, and have therefore been removed.

4 Limitations

This section briefly describes the known limitations of the Quick-Start Platform x86 package. Please refer to section 5 for a more technical description.

For model oriented packages, additional limitations may be found in the model target guides.

ich10_lpc - model of Intel® ICH10 LPC bridge:

• SIRQ routing is unimplemented.
• Chipset configuration registers are mostly dummy.
• General Purpose I/O is dummy.

ich10_sata_f2 - model of Intel® ICH10 SATA controller: FIS-based Switching is not implemented. Port Multipliers are not implemented. Multiple MSI based messages are not implemented. Enclosure Management is not implemented. Command Completion Coalescing is not implemented. Device Sleep is not implemented.

ich10_smbus - model of Intel® ICH10 SMBus unit:

• I2C read is unimplemented.
• Block transfer in disabled 32-byte buffer is unimplemented.
• Host notify is unimplemented.

ich10_usb_uhci - model of Intel® ICH10 USB UHCI:

• Interrupt and isochronous transfers are not supported.
• The bulk and control transfers are only initiated while the attribute async_list_polling_enabled is set.
• Does not handle when USB devices sending NAK or STALL.
• Does not handle USB devices with latency.
• The submit_transfer function must return USB_Transfer_Complicated.

ich10_usb_ehci - model of Intel® ICH10 USB EHCI:

• Interrupt and Isochronous transfers not supported
• Cannot handle when USB devices send NAK or STALL status during Control and Bulk transfers
• Cannot handle USB devices with a latency (submit_transfer must return USB_Transfer_Completed)
• Bulk and Control transfers will only be initiated while the attribute async_list_polling_enabled is set.

x58-core-f1-legacy - model of scratchpads and GPIO unit:

• The device is mostly dummy.

x58-core-f2-legacy - model of IOH control/status and RAS unit:

• The device is mostly dummy.

x58-core-f3-legacy - model of X58 throttling unit:

• The device is mostly dummy.

x58-qpi-port0-f0-legacy - model of QuickPath Interconnect port 0/0:

• The device is mostly dummy.

x58-qpi-port0-f1-legacy - model of QuickPath Interconnect port 0/1:

• The device is mostly dummy.

x58-qpi-port1-f0-legacy - model of QuickPath Interconnect port 1/0:

• The device is mostly dummy.

x58-qpi-port1-f1-legacy - model of QuickPath Interconnect port 1/1:

• The device is mostly dummy.

x58-pcie-port-legacy - model of X58 PCIe root port:

• The device is mostly dummy and does not support connecting PCIe devices.

x58-remap-unit0-legacy - model of DMA/Interrupt remapping unit 0:

• where Intel® VT-d fault compression for primary fault logging is not implemented.
• where Intel® VT-d remapping unit does not cache any DMA or interrupt lookups.

x58-remap-unit1-legacy - model of DMA/Interrupt remapping unit 1:

• where Intel® VT-d fault compression for primary fault logging is not implemented.
• where Intel® VT-d remapping unit does not cache any DMA or interrupt lookups.

x58-qpi-ncr-f0-legacy - model of QuickPath Interconnect Non-Core Registers:

• The device is mostly dummy.

x58-qpi-sad-f1-legacy - model of QPI System Address Decoder Regs:

• The device is mostly dummy.

ich10_lan_v2 - model of Intel® ICH10 Gb Ethernet controller:

• Flow Control is unimplemented.
• Power Management is unimplemented.
• Load configuration from non-volatile memory is unimplemented.
• Adjust time in time sync (IEEE 1588) is unimplemented.
• RSS interrupt to specific CPU is unimplemented.

X58:

• Reboot is only partially supported. Depending on the specific mechanism used for reboot, it may or may not work.

5 Detailed List of Limitations

This section describes in detail the known limitations of the Quick-Start Platform x86 package. Please refer to section 4 for a more general description.

A register or field marked as Not implemented is present with read-write semantics but has no side effects on simulation. A register marked as Not implemented (design limitation) has the same semantics as a "Not implemented" register and there is no plan to extend the model with this functionality. A register with Lack of documentation has not been implemented because there is no available documentation describing its semantics.

ich10_lpc - model of Intel® ICH10 LPC bridge:

The following banks have limitations:

• cs_conf: This is a dummy implementation
• gpio_conf: This is a dummy implementation

The following registers have limitations:

• acpi_io_regs::c3_res: Not implemented.
• acpi_io_regs::gpe_cntl: Not implemented.
• acpi_io_regs::lv2: Not implemented.
• acpi_io_regs::lv3: Not implemented.
• acpi_io_regs::lv4: Not implemented.
• acpi_io_regs::pm1_en: Field PCEXPWAK_DIS - Not implemented. Field PWRBTN_EN - Not implemented. Field RTC_EN - Not implemented.
• acpi_io_regs::pm2_cnt: Not implemented.
• acpi_io_regs::proc_cnt: Field FORCE_THTL - Not implemented. Field THTL_EN - Not implemented.
• acpi_io_regs::smi_en: Field EOS - Not implemented. Field MCSMI_EN - Not implemented. Field SWISMI_TMR_EN - Not implemented.
• acpi_io_regs::sw_irq_gen: Not implemented.
• acpi_io_regs::tco1_cnt: Field SEND_NOW - Not implemented.
• acpi_io_regs::tco2_cnt: Field GPIO11_ALERT_DISABLE - Not implemented.
• acpi_io_regs::tco_message1: Not implemented.
• acpi_io_regs::tco_message2: Not implemented.
• acpi_io_regs::tco_rld: Not implemented.
• acpi_io_regs::tco_wdcnt: Not implemented.
• acpi_io_regs::uprwc: Not implemented.
• cs_conf::buc: Field cbe - Not implemented. Field lan_dis - Not implemented. Field sdo - Not implemented. Field ts - Not implemented.
• cs_conf::cg: Field audiod - Not implemented. Field audios - Not implemented. Field dmirx - Not implemented. Field dmitx - Not implemented. Field ehcid - Not implemented. Field ehcis - Not implemented. Field lan - Not implemented. Field lpc - Not implemented. Field pci - Not implemented. Field pciers - Not implemented. Field pcitx - Not implemented. Field prxgen - Not implemented. Field sata1 - Not implemented. Field sata2 - Not implemented. Field sata3 - Not implemented. Field sata4 - Not implemented. Field sata5 - Not implemented. Field smbcgen - Not implemented. Field uhci - Not implemented.
• cs_conf::cir7: Not implemented.
• cs_conf::dmc: Not implemented.
• cs_conf::dmic: Not implemented.
• cs_conf::esd: Not implemented.
• cs_conf::fd: Field lpc - Not implemented. Field smbus - Not implemented. Field throt - Not implemented.
• cs_conf::fpss: Not implemented.
• cs_conf::hdba: Not implemented.
• cs_conf::hdd: Not implemented.
• cs_conf::ilcl: Not implemented.
• cs_conf::iotr0: Not implemented.
• cs_conf::iotr1: Not implemented.
• cs_conf::iotr2: Not implemented.
• cs_conf::iotr3: Not implemented.
• cs_conf::lcap: Field apms - Not implemented. Field el0 - Not implemented.
• cs_conf::lctl: Not implemented.
• cs_conf::lsts: Not implemented.
• cs_conf::map: Field uhci6 - Not implemented.
• cs_conf::oic: Field aen - Not implemented. Field asel - Not implemented. Field cen - Not implemented.
• cs_conf::pat[0..63]: Not implemented.
• cs_conf::pdsw: Not implemented.
• cs_conf::ppo: Not implemented.
• cs_conf::pvc: Not implemented.
• cs_conf::pvs: Not implemented.
• cs_conf::rc: Field ll - Not implemented. Field ue - Not implemented. Field ul - Not implemented.
• cs_conf::rctcl: Not implemented.
• cs_conf::rec: Not implemented.
• cs_conf::rp1ba: Not implemented.
• cs_conf::rp1d: Not implemented.
• cs_conf::rp2ba: Not implemented.
• cs_conf::rp2d: Not implemented.
• cs_conf::rp3ba: Not implemented.
• cs_conf::rp3d: Not implemented.
• cs_conf::rp4ba: Not implemented.
• cs_conf::rp4d: Not implemented.
• cs_conf::rp5ba: Not implemented.
• cs_conf::rp5d: Not implemented.
• cs_conf::rp6ba: Not implemented.
• cs_conf::rp6d: Not implemented.
• cs_conf::rpc: Not implemented.
• cs_conf::rpfn: Not implemented.
• cs_conf::tctl: Not implemented.
• cs_conf::trcr: Not implemented.
• cs_conf::trsr: Not implemented.
• cs_conf::twdr: Not implemented.
• cs_conf::ulba: Not implemented.
• cs_conf::uld: Not implemented.
• cs_conf::v0cap: Not implemented.
• cs_conf::v0ctl: Field tvm - Not implemented.
• cs_conf::v0sts: Not implemented.
• cs_conf::v1cap: Field mts - Not implemented.
• cs_conf::v1ctl: Not implemented.
• cs_conf::v1sts: Not implemented.
• cs_conf::vcap1: Not implemented.
• cs_conf::vcap2: Not implemented.
• cs_conf::vch: Not implemented.
• fixed_io::coproc_err: Not implemented.
• fixed_io::nmi_sc: Field iochk_nmi_en - Not implemented. Field pci_serr_en - Not implemented.
• fixed_io::port92: Not implemented.
• fixed_io::rst_cnt: Field full_rst - Not implemented. Field sys_rst - Not implemented.
• pci_config::bios_cntl: Field bioswe - Not implemented. Field ble - Not implemented.
• pci_config::bm_break_en: Not implemented.
• pci_config::c4_timing_cnt: Not implemented.
• pci_config::c5_exit_timing_cnt: Not implemented.
• pci_config::cx_state_cnf: Not implemented.
• pci_config::feature_vector: Not implemented.
• pci_config::gen_pmcon1: Field bios_pcie_en - Not implemented. Field c4_disable - Not implemented. Field c4onc3_en - Not implemented. Field c5_enable - Not implemented. Field clk_run_en - Not implemented. Field cpuslp_en - Not implemented. Field i64en - Not implemented. Field per_smi_sel - Not implemented. Field pwr_btn_lvl - Not implemented. Field ss_en - Not implemented.
• pci_config::gen_pmcon2: Not implemented.
• pci_config::gen_pmcon3: Field afterg3_en - Not implemented. Field rst_sts - Not implemented. Field s4_state_dis - Not implemented. Field slps4_width - Not implemented. Field slps4_width_en - Not implemented. Field sw_smi_rate - Not implemented.
• pci_config::gen_pmcon_lock: Field c_state_cfg_lk - Not implemented. Field slp_s4_lock - Not implemented. Field unlock_c_trans - Not implemented.
• pci_config::gpi_rout: Not implemented.
• pci_config::io_dec: Field FDD - Not implemented. Field LPT - Not implemented.
• pci_config::lpc_en: Field cnf1_en - Not implemented. Field cnf2_en - Not implemented. Field fdd_en - Not implemented. Field gameh_en - Not implemented. Field gamel_en - Not implemented. Field kbc_en - Not implemented. Field lpt_en - Not implemented. Field mc_en - Not implemented.
• pci_config::lpc_ibdf: Not implemented.
• pci_config::pic_b1h: Not implemented.
• pci_config::pmir: Field cf9_gr - Not implemented. Field cf9_lock - Not implemented.

ich10_sata_f2 - model of Intel® ICH10 SATA controller:

The following registers have limitations:

• ahci::bohc: Field oos - Not implemented. Field sooe - Not implemented.
• ahci::ccc_ports: Not implemented.
• pci_config::atc: Not implemented.
• pci_config::ats: Not implemented.
• pci_config::bfcs: Not implemented.
• pci_config::bftd1: Not implemented.
• pci_config::bftd2: Not implemented.
• pci_config::flr_control: Field iflr - Not implemented.
• pci_config::pmcs: Field ps - Not implemented.
• pci_config::scgc: Not implemented.

ich10_sata_f5 - model of Intel® ICH10 SATA:

The following registers have limitations:

• pci_config::flr_control: Field iflr - Not implemented.
• pci_config::pcs: Not implemented.
• pci_config::pmcs: Field ps - Not implemented.

ich10_smbus - model of Intel® ICH10 SMBus unit:

The following registers have limitations:

• smbus_func::aux_sts: Not implemented.
• smbus_func::hst_cnt: Field INTREN - Not implemented. Field KILL - Not implemented. Field LAST_BYTE - Not implemented. Field PEC_EN - Not implemented.

ich10_usb_ehci - model of Intel® ICH10 USB EHCI:

The following registers have limitations:

• usb_regs::frindex: The controller may process frames in advance, i.e., before they have been referenced by frindex
• usb_regs::prtsc[0..5]: Field force_port_resume - Write-access not implemented. Field over_current - Read-access not implemented. Field port_test_ctrl - Write-access not implemented. Field suspend - Write-access not implemented. Field wake_on_connect_en - Not implemented. Field wake_on_disconnect_en - Not implemented. Field wake_on_over_current_en - Not implemented.
• usb_regs::usbcmd: Field async_pm_count - Not implemented (design limitation). This field is a dummy field with no side effects. Field async_pm_en - Not implemented (design limitation). This field is a dummy field with no side effects. Field int_thres_ctrl - Not implemented (design limitation). This field is a dummy field with no side effects. Field light_hcreset - Write-access not implemented.
• usb_regs::usbsts: Field async_sched_status - Read-access not implemented. Field reclamation - Read-access not implemented.

ich10_bridge - model of Intel® ICH10 DMI to PCI unit:

The following registers have limitations:

• pci_config::bpc: Field PDE - Not implemented. Field PSE - Not implemented. Field RTAE - Not implemented. Field SDP - Not implemented. Field SDTT - Not implemented. Field URLT - Not implemented.
• pci_config::dtc: Field AFADE - Not implemented. Field BDT - Not implemented. Field DDT - Not implemented. Field MDT - Not implemented. Field MRLPD - Not implemented. Field MRMPD - Not implemented. Field MRPD - Not implemented. Field NP - Not implemented.
• pci_config::spdh: Field HD0 - Not implemented. Field HD1 - Not implemented. Field HD2 - Not implemented. Field HD3 - Not implemented.

x58-ioxapic-legacy - model of X58 IOxAPIC unit:

The following registers have limitations:

• pci_config::abar: Not implemented.
• pci_config::ioapictetpc: Not implemented.
• pci_config::rdindex: Not implemented.
• pci_config::rdwindow: Not implemented.

x58-qpi-sad-f1-legacy - model of QPI System Address Decoder Regs:

The following registers have limitations:

• pci_config::sad_dram_rule[0..7]: Not implemented.
• pci_config::sad_hen: Not implemented.
• pci_config::sad_interleave_list[0..7]: Not implemented.
• pci_config::sad_pam0123: Not implemented.
• pci_config::sad_pam456: Not implemented.
• pci_config::sad_smram: Not implemented.

ich10_lan_v2 - model of Intel® ICH10 Gb Ethernet controller:

The following registers have limitations:

• csr::ait: Not implemented.
• csr::ctrl: Field lanphypco - Not implemented. Field lanphypcv - Not implemented. Field lcd_rst - Not implemented. Field rfce - Not implemented. Field tfce - Not implemented.
• csr::eec: Not implemented.
• csr::eerd: Not implemented.
• csr::ert: Field rxt - Not implemented.
• csr::extcnf_ctrl: Not implemented.
• csr::extcnf_size: Not implemented.
• csr::fcrth: Field rt - Not implemented.
• csr::fcrtl: Field rt - Not implemented.
• csr::fcrtv: Not implemented.
• csr::fcttv: Not implemented.
• csr::fext: Not implemented.
• csr::fextnvm: Not implemented.
• csr::fflt[0..3]: Field len - Not implemented.
• csr::ffmt[0..127]: Field mask - Not implemented.
• csr::ffvt[0..127]: Not implemented.
• csr::fla: Not implemented.
• csr::fwsm_s: Not implemented.
• csr::h2me: Not implemented.
• csr::ip4at[0..3]: Not implemented.
• csr::ip6at[0..3]: Not implemented.
• csr::ipav: Field v41 - Not implemented. Field v60 - Not implemented.
• csr::ledctl: Not implemented.
• csr::pba: Field rxa - Not implemented. Field txa - Not implemented.
• csr::pbs: Field Size - Not implemented.
• csr::pcianacfg: Not implemented.
• csr::phy_ctrl: Not implemented.
• csr::rctl: Field pmcf - Not implemented.
• csr::rqdpc[0..1]: Not implemented.
• csr::rx_queue[0..1].rxdctl: Field gran - Not implemented. Field hthresh - Not implemented. Field pthresh - Not implemented. Field wthresh - Not implemented.
• csr::status: Field phytype - Not implemented.
• csr::strap: Not implemented.
• csr::tctl: Field rrthresh - Not implemented. Field rtlc - Not implemented. Field swxoff - Not implemented.
• csr::timadjh: Not implemented.
• csr::timadjl: Not implemented.
• csr::tipg: Not implemented.
• csr::tx_queue[0..1].txdctl: Field gran - Not implemented. Field hthresh - Not implemented. Field pthresh - Not implemented. Field wthresh - Not implemented.
• csr::wuc: Not implemented.
• csr::wufc: Not implemented.