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config SOC_INTEL_COMMON_BLOCK_SGX
bool
select CPU_INTEL_COMMON
select CPU_INTEL_COMMON_HYPERTHREADING
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
default 1 if SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_1MB
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
default SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_DISABLED 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"
config SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_SIZE_1MB
depends on !SOC_INTEL_COMMON_BLOCK_SGX_ENABLE # SGX depends on PRMRR >= 32 MiB
bool "1 MiB"
config SOC_INTEL_COMMON_BLOCK_SGX_PRMRR_DISABLED
depends on !SOC_INTEL_COMMON_BLOCK_SGX_ENABLE # SGX depends on PRMRR >= 32 MiB
bool "Disabled"
endchoice
endif
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