Table 63. TPM 2.0 security information (continued)
Option Description
TPM
Hi
erarcy
Enables, disables, or clears the storage and endorsement hierarchies. When set to Enabled, the storage and
endorsement hierarchies can be used.
When set to Disabled, the storage and endorsement hierarchies cannot be used.
When set to Clear, the storage and endorsement hierarchies are cleared of any values, and then reset to
Enabled.
TPM
Advanced
Settings
Specifies TPM Advanced Settings details.
TPM PPI
Bypass
Provision
When set to Enabled, allows the Operating System to bypass Physical Presence Interface
(PPI) prompts when issuing PPI Advanced Configuration and Power interface (ACPI)
provisioning operations
TPM PPI
Bypass Clear
When set to Enabled allows the Operating System to bypass Physical Presence Interface
(PPI) prompts when issuing PPI Advanced Configuration and Power Interface (ACPI) clear
operations.
TPM Algorithm
Selection
Allows to choose between the TPM encryption standards SHA1 and SHA256
Table 64. System Security details
Option Description
Intel(R) TXT Enables you to set the Intel Trusted Execution Technology (TXT) option. To enable
th
e Intel TXT option, virtualization technology and TPM Security must be enabled with
Pre-boot measurements. This option is set to Off by default. It is set On for Secure
Launch (Firmware Protection) support on Windows 2022.
Memory Encryption Enables or disables the Intel Total Memory Encryption (TME) and Multi-Tenant (Intel
®
TME-MT). When option is set to Disabled, BIOS disables both TME and MK-TME
technology. When option is set to Single Key BIOS enables the TME technology. When
option is set to Multiple Keys, BIOS enables the TME-MT technology. This option is set
to Disabled by default.
TME Encryption Bypass This option is set to Disabled by default when Memory Encryption option is disabled.
Intel(R) SGX Enables you to set the Intel Software Guard Extension (SGX) option. To enable the Intel
SGX option, processor must be SGX capable, memory population must be compatible
(minimum x8 identical DIMM1 to DIMM8 per CPU socket, not support on persistent
memory configuration), memory operating mode must be set at optimizer mode, memory
encryption must be enabled and node interleaving must be disabled. This option is set to
Off by default. When this option is to Off, BIOS disables the SGX technology. When this
option is to On, BIOS enables the SGX technology.
SGX Package Info In-Band
Access
Enables you to access the Intel Software Guard Extension (SGX) package info in-band
option. This option is set to Off by default.
PPMRR Size Sets the PPMRR size.
SGX QoS Enables or disables the SGX quality of service.
Select Owner EPOCH input type Enables you to select Change to New random Owner EPOCHs or Manual User
Defined Owner EPOCHs. Each EPOCH is 64-bit. After generating new EPOCH by
selecting Change to New random Owner EPOCHs, the selection reverts back to
Manual User Defined Owner EPOCHs.
Software Guard Extensions Epoch n: Sets the Software Guard Extensions Epoch
values.
Enable writes to
SGXLEPUBKEYHASH[3:0] from
OS/SW
Enables or disables the Enable writes to SGXLEPUBKEYHASH[3:0] from OS/SW.
SGX LE Public Key Hash0: Sets the bytes from 0-7 for SGX Launch Enclave Public
Key Hash.
68 Pre-operating system management applications
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