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sysbuild: Emit warning log when MCUboot uses KMU #19352

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sysbuild: Emit warning log when MCUboot uses KMU #19352

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8 changes: 8 additions & 0 deletions sysbuild/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -242,6 +242,14 @@ function(${SYSBUILD_CURRENT_MODULE_NAME}_pre_cmake)

if(SB_CONFIG_MCUBOOT_SIGNATURE_USING_KMU)
set_config_bool(mcuboot CONFIG_BOOT_SIGNATURE_USING_KMU y)
if(NOT SB_CONFIG_MCUBOOT_SIGNATURE_USING_KMU_SKIP_WARNING)
message(WARNING "
------------------------------------------------------------------------------
--- WARNING: MCUboot uses KMU stored keys for signature verification. Make ---
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Add link to provisioning documentation

Also add information that without keys you won't be able to run application and application won't start so that a user could quickly identify this warning as a cause of his potential problem.

--- sure to use `west ncs-provision` to manually provision the bootloader. ---
------------------------------------------------------------------------------
")
endif()
else()
set_config_bool(mcuboot CONFIG_BOOT_SIGNATURE_USING_KMU n)
endif()
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9 changes: 9 additions & 0 deletions sysbuild/Kconfig.mcuboot
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Expand Up @@ -164,6 +164,15 @@ config MCUBOOT_SIGNATURE_USING_KMU
help
The device needs to be provisioned with proper set of keys.

config MCUBOOT_SIGNATURE_USING_KMU_SKIP_WARNING
bool "Skip KMU provisioning CMake warning"
depends on MCUBOOT_SIGNATURE_USING_KMU
help
When using KMU stored keys for MCUboot signature verification, build
system emits a CMake warning to ensure that user is aware that manual
provisioning of the KMU keys is necessary. Enable the option to skip
the warning.

endif

config MCUBOOT_USE_ALL_AVAILABLE_RAM
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