Dell PowerEdge R250 EMC BIOS and UEFI Reference Guide - Page 14
Table 19. TPM 2.0 security information continued, Table 20. System Security details
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Table 19. TPM 2.0 security information (continued) Option Description TPM Information Changes the operational state of the TPM. This option is set to No Change by default. TPM Firmware Indicates the firmware version of the TPM. TPM Hierarcy 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. Table 20. System Security details Option Description Intel(R) TXT Enables you to set the Intel Trusted Execution Technology (TXT) option. To enable the 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. 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. Software Guard Extensions Epoch n: Sets the Software Guard Extensions Epoch values. SGX LE Public Key Hash0: Sets the bytes from 0-7 for SGX Launch Enclave Public Key Hash. SGX LE Public Key Hash1: Sets the bytes from 8-15 for SGX Launch Enclave Public Key Hash. SGX LE Public Key Hash2: Sets the bytes from 16-23 for SGX Launch Enclave Public Key Hash. SGX LE Public Key Hash3: Sets the bytes from 24-31 for SGX Launch Enclave Public Key Hash. Power Button Enables or disables the power button on the front of the system. This option is set to Disabled by default. AC Power Recovery Sets how the system behaves after AC power is restored to the system. This option is set to Last by default. NOTE: The host system will not power on up until iDRAC Root of Trust (RoT) is completed, host power on will be delayed by minimum 90 seconds after the AC applied. AC Power Recovery Delay Sets the time delay for the system to power up after AC power is restored to the system. This option is set to Immediate by default. When this option is set to Immediate, there is no delay for power up. When this option is set to Random, the system creates a random delay for power up. When this option is set to User Defined, the system delay time is manually to power up. 14 Pre-operating system management applications
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