T210 has Quad ARM® Cortex®-A57 cores in a switched configuration with a companion set of quad ARM Cortex-A53 cores. The Cortex-A57 and A53 cores support ARMv8, executing both 64-bit Aarch64 code, and 32-bit Aarch32 code including legacy ARMv7 applications. The Cortex-A57 processors each have 48 KB Instruction and 32 KB Data Level 1 caches; and have a 2 MB shared Level 2 unified cache. The Cortex-A53 processors each have 32 KB Instruction and 32 KB Data Level 1 caches; and have a 512 KB shared Level 2 unified cache.
Tegra supports multiple Trusted OS', Trusted Little Kernel (TLK) being one of them. In order to include the 'tlkd' dispatcher in the image, pass 'SPD=tlkd' on the command line while preparing a bl31 image. This allows other Trusted OS vendors to use the upstream code and include their dispatchers in the image without changing any makefiles.
CROSS_COMPILE=/bin/aarch64-none-elf- make PLAT=tegra
TARGET_SOC= BL32=
SPD= all