1*91f16700SchasingluluAmlogic Meson S905X2 (G12A) 2*91f16700Schasinglulu=========================== 3*91f16700Schasinglulu 4*91f16700SchasingluluThe Amlogic Meson S905X2 is a SoC with a quad core Arm Cortex-A53 running at 5*91f16700Schasinglulu~1.8GHz. It also contains a Cortex-M3 used as SCP. 6*91f16700Schasinglulu 7*91f16700SchasingluluThis port is a minimal implementation of BL31 capable of booting mainline U-Boot 8*91f16700Schasingluluand Linux: 9*91f16700Schasinglulu 10*91f16700Schasinglulu- SCPI support. 11*91f16700Schasinglulu- Basic PSCI support (CPU_ON, CPU_OFF, SYSTEM_RESET, SYSTEM_OFF). Note that CPU0 12*91f16700Schasinglulu can't be turned off, so there is a workaround to hide this from the caller. 13*91f16700Schasinglulu- GICv2 driver set up. 14*91f16700Schasinglulu- Basic SIP services (read efuse data, enable/disable JTAG). 15*91f16700Schasinglulu 16*91f16700SchasingluluIn order to build it: 17*91f16700Schasinglulu 18*91f16700Schasinglulu.. code:: shell 19*91f16700Schasinglulu 20*91f16700Schasinglulu CROSS_COMPILE=aarch64-linux-gnu- make DEBUG=1 PLAT=g12a 21*91f16700Schasinglulu 22*91f16700SchasingluluThis port has been tested on a SEI510 board. After building it, follow the 23*91f16700Schasingluluinstructions in the `gxlimg repository`_ or `U-Boot repository`_, replacing the 24*91f16700Schasinglulumentioned **bl31.img** by the one built from this port. 25*91f16700Schasinglulu 26*91f16700Schasinglulu.. _gxlimg repository: https://github.com/repk/gxlimg/blob/master/README.g12a 27*91f16700Schasinglulu.. _U-Boot repository: https://github.com/u-boot/u-boot/blob/master/doc/board/amlogic/sei510.rst 28