| Internal Build Options |
| ====================== |
| |
| |TF-A| internally uses certain options that are not exposed directly through |
| :ref:`build-options <build options>` but enabled or disabled indirectly and |
| depends on certain options to be enabled or disabled. |
| |
| .. _build_options_internal: |
| |
| - ``CTX_INCLUDE_EL2_REGS``: This boolean option provides context save/restore |
| operations when entering/exiting an EL2 execution context. This is of primary |
| interest when Armv8.4-SecEL2 or RME extension is implemented. |
| Default is 0 (disabled). This option will be set to 1 (enabled) when ``SPD=spmd`` |
| and ``SPMD_SPM_AT_SEL2`` is set or when ``ENABLE_RME`` is set to 1 (enabled). |
| |
| - ``FFH_SUPPORT``: This boolean option provides support to enable Firmware First |
| handling (FFH) of External aborts and SError interrupts originating from lower |
| ELs which gets trapped in EL3. This option will be set to 1 (enabled) if |
| ``HANDLE_EA_EL3_FIRST_NS`` is set. Currently only NS world routes EA to EL3 but |
| in future when Secure/Realm wants to use FFH then they can introduce new macros |
| which will enable this option implicitly. |
| |
| - ``OPTEE_SP_FW_CONFIG``: DTC build flag to include OP-TEE as SP in |
| tb_fw_config device tree. This flag is defined only when |
| ``ARM_SPMC_MANIFEST_DTS`` manifest file name contains pattern optee_sp. |
| |
| - ``TRUSTY_SP_FW_CONFIG``: DTC build flag to include Trusty as SP in |
| tb_fw_config device tree. This flag is defined only when |
| ``ARM_SPMC_MANIFEST_DTS`` manifest file name contains pattern trusty_sp. |