ADLINK aTCA-9300 - Manual (Page 63)

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Network Stack
This option is used for enabling or disabling UEFI network stack for onboard Ethernet.
Ipv4 PXE Support
This option is used for enable Ipv4 PXE boot support. If disabled IPV4 PXE boot
option will not be created.
Ipv6 PXE Support
This option is used for enable Ipv6 PXE boot support. If disabled IPV4 PXE boot
option will not be created.
6.3.8 CPU PPM Configuration
Ivybridge PPM configuration parameters. An example screen is shown below.
EIST
Enable or disable Intel SpeedStep. Set this value to Enable/Disable.
Turbo Mode
Set this option to enable or disable turbo mode . Set this value to Enable/Disable.
CPU C3 Report
Enable or disable CPU C3 (ACPI C2) report to OS. Set this value to
Enable/Disable.