Help¶

RAM area set aside for the SPM. On the nRF9160 the Modem library needs to be included in the build. There are scrict requirements to the RAM area reserved for Modem library. Specifically it must be 64kB from RAM offset 0x10000. By setting the SPM RAM to 0x10000 we ensure that Modem library RAM ends up in the right place.

Direct dependencies¶

IS_SPM

(Includes any dependencies from ifs and menus.)

Defaults¶

0 if !SPM_SECURE_SERVICES
0x10000 if SOC_NRF9160
0x8000

Kconfig definition¶

At <nRF>/subsys/spm/Kconfig:39

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:23 → <Zephyr>/modules/Kconfig:6 → <BuildDir>/Kconfig/Kconfig.modules:2 → <nRF>/Kconfig.nrf:25 → <nRF>/subsys/Kconfig:26

Menu path: (Top) → Modules → nrf (/home/runner/work/sdk-nrf/sdk-nrf/ncs/nrf) → Nordic nRF Connect → SPM → Current app is SPM

config PM_PARTITION_SIZE_SPM_SRAM
    hex "RAM reserved for SPM"
    default 0 if !SPM_SECURE_SERVICES
    default 0x10000 if SOC_NRF9160
    default 0x8000
    depends on IS_SPM
    help
      RAM area set aside for the SPM.
      On the nRF9160 the Modem library needs to be included in the build.
      There are scrict requirements to the RAM area reserved for Modem library.
      Specifically it must be 64kB from RAM offset 0x10000.
      By setting the SPM RAM to 0x10000 we ensure that Modem library RAM ends
      up in the right place.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)