config SOC_INTEL_COMMON_BLOCK_SGX bool select CPU_INTEL_COMMON default n help Intel Processor common SGX support if SOC_INTEL_COMMON_BLOCK_SGX config SOC_INTEL_COMMON_BLOCK_SGX_LOCK_MEMORY bool default n help Lock memory before SGX activation. This is only needed if MCHECK does not do it. config SOC_INTEL_COMMON_BLOCK_SGX_ENABLE bool "Enable Software Guard Extensions (SGX) if available" default n help Intel Software Guard Extensions (SGX) is a set of new CPU instructions that can be used by applications to set aside private regions (so-called Secure Enclaves) of code and data. SGX will only be enabled when supported by the CPU! config SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE int depends on SOC_INTEL_COMMON_BLOCK_SGX_ENABLE default 256 if SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_MAX default 256 if SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_256MB default 128 if SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_128MB default 64 if SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_64MB default 32 if SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_32MB choice prompt "PRMRR size" depends on SOC_INTEL_COMMON_BLOCK_SGX_ENABLE default SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_MAX if SOC_INTEL_COMMON_BLOCK_SGX_ENABLE help PRMRR (Protected Memory Range) is the space in RAM that is used to provide a protected memory area (e.g. for the Intel SGX Secure Enclaves). The memory region is accessible only by the processor itself to protect the data from unauthorized access. This option selects the maximum size that gets reserved. Depending on the SoC a lower, compatible value may be chosen at runtime as not all values are supported on all families. config SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_MAX bool "Maximum" config SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_256MB bool "256 MiB" config SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_128MB bool "128 MiB" config SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_64MB bool "64 MiB" config SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_32MB bool "32 MiB" endchoice endif