Copyright
©
2013
congatec
AG
TU87m12
90/114
Feature
Options
Description
Limit CPUID Maximum
Disabled
Enabled
When enabled, the processor limits the maximum CPUID input value to 03h when queried, even if the processor
supports a higher CPUID input value.
When disabled, the processor returns the actual maximum CPUID input value of the processor when queried.
Limiting the CPUID input value may be required for older operating systems that cannot handle the extra CPUID
information returned when using the full CPUID input value.
Execute Disable Bit
Disabled
Enabled
Enable or disable the Execute Disable Bit (XD) of the processor. With the XD bit set to enabled, certain classes of
malicious buffer overflow attacks can be prevented when combined with a supporting OS.
Intel Virtualization Technology
Disabled
Enabled
When enabled, a VMM can utilize the integrated hardware virtualization support.
Hardware Prefetcher
Disabled
Enabled
Enable or disable the Mid Level Cache (L2) streamer prefetcher.
Adjacent Cache Line Prefetch
Disabled
Enabled
Enable or disable the Mid Level Cache (L2) prefetching of adjacent cache lines.
CPU AES
Disabled
Enabled
Enable or disable CPU Advanced Encryption Standard (AES) instructions.
EIST
Disabled
Enabled
Enable or disable Enhanced Intel SpeedStep Technology (EIST).
Energy Performance
Performance
Balanced
Perform.
Balanced Energy
Energy Efficient
Optimize between performance and power savings.
Turbo Mode
Disabled
Enabled
Enable or disable Turbo Mode.
Package Power Limit Lock
Disabled
Enabled
When enabled, PACKAGE_POWER_LIMIT MSR will be locked and a reset will be required to unlock the register.
CPU Power Limit1
0-255
Default : 0
CPU Power Limit1 value
CPU Power Limit1 Time
0-255
Default : 0
Time window in which the Power Limit1 is maintained.
CPU Power Limit2
0-255
Default : 0
CPU Power Limit2 value
Platform Power Limit Lock
Disabled
Enabled
When enabled, PLATFORM_POWER_LIMIT MSR will be locked and a reset will be required to unlock the register.
CPU Power Limit3
0-255
Default : 0
CPU Power Limit3 value
CPU Power Limit3 Time
0-255
Default : 0
Time window in which the Power Limit3 is maintained.
CPU Power Limit3 Duty Cycle
0-100
Default : 0
Specify in percentage the duty cycle that the CPU is required to maintain over the configured Power Limit3 time
windows.
DDR Power Limit1
0-255
Default : 0
DDR Power Limit1 value
DDR Power Limit1 Time
0-255
Default : 0
Time window in which the DDR Power Limit1 is maintained.