| Trusty Dispatcher |
| ================= |
| |
| Trusty is a a set of software components, supporting a Trusted Execution |
| Environment (TEE) on mobile devices, published and maintained by Google. |
| |
| Detailed information and build instructions can be found on the Android |
| Open Source Project (AOSP) webpage for Trusty hosted at |
| https://source.android.com/security/trusty |
| |
| Boot parameters |
| --------------- |
| |
| Custom boot parameters can be passed to Trusty by providing a platform |
| specific function: |
| |
| .. code:: c |
| |
| void plat_trusty_set_boot_args(aapcs64_params_t *args) |
| |
| If this function is provided ``args->arg0`` must be set to the memory |
| size allocated to trusty. If the platform does not provide this |
| function, but defines ``TSP_SEC_MEM_SIZE``, a default implementation |
| will pass the memory size from ``TSP_SEC_MEM_SIZE``. ``args->arg1`` |
| can be set to a platform specific parameter block, and ``args->arg2`` |
| should then be set to the size of that block. |
| |
| Supported platforms |
| ------------------- |
| |
| Out of all the platforms supported by Trusted Firmware-A, Trusty is only |
| verified and supported by NVIDIA's Tegra SoCs. |