IBASE Technology IB915F User Manual page 38

BIOS SETUP
Configurable TDP Boot Mode
Configurable TDP Boot Mode as Nominal/Up/Down/Deactivate TDP
selection. Deactivate option will set MSR to Nominal and MMIO to
Zero.
Configurable TDP Lock
Configurable TDP Lock sets the Lock bits on
TURBO_ACTIVATION_RATIO and CONFIG_TDP_CONTROL.
Note: When CTDP Lock is enabled Custom ConfigTDP Count will be
forced to 1 and Custom ConfigTDP Boot Index will be forced to 0.
CTDP BIOS control
Enables CTDP control viaruntime ACPI BIOS methods.
This "BIOS only" feature does not require EC or driver support.
34 IB915 User's Manual