| Govindraj Raja | 0264d6c | 2022-11-21 13:10:40 +0000 | [diff] [blame] | 1 | Internal Build Options |
| 2 | ====================== |
| 3 | |
| 4 | |TF-A| internally uses certain options that are not exposed directly through |
| 5 | :ref:`build-options <build options>` but enabled or disabled indirectly and |
| 6 | depends on certain options to be enabled or disabled. |
| 7 | |
| 8 | .. _build_options_internal: |
| 9 | |
| 10 | - ``CTX_INCLUDE_EL2_REGS``: This boolean option provides context save/restore |
| 11 | operations when entering/exiting an EL2 execution context. This is of primary |
| 12 | interest when Armv8.4-SecEL2 or RME extension is implemented. |
| 13 | Default is 0 (disabled). This option will be set to 1 (enabled) when ``SPD=spmd`` |
| 14 | and ``SPMD_SPM_AT_SEL2`` is set or when ``ENABLE_RME`` is set to 1 (enabled). |
| Manish Pandey | f90a73c | 2023-10-10 15:42:19 +0100 | [diff] [blame^] | 15 | |
| 16 | - ``FFH_SUPPORT``: This boolean option provides support to enable Firmware First |
| 17 | handling (FFH) of External aborts and SError interrupts originating from lower |
| 18 | ELs which gets trapped in EL3. This option will be set to 1 (enabled) if |
| 19 | ``HANDLE_EA_EL3_FIRST_NS`` is set. Currently only NS world routes EA to EL3 but |
| 20 | in future when Secure/Realm wants to use FFH then they can introduce new macros |
| 21 | which will enable this option implicitly. |