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Carlo Caione57300ff2019-09-18 11:29:48 +01001Amlogic Meson S905X2 (G12A)
Paul Beesleyf2ec7142019-10-04 16:17:46 +00002===========================
Carlo Caione57300ff2019-09-18 11:29:48 +01003
4The Amlogic Meson S905X2 is a SoC with a quad core Arm Cortex-A53 running at
5~1.8GHz. It also contains a Cortex-M3 used as SCP.
6
7This port is a minimal implementation of BL31 capable of booting mainline U-Boot
8and Linux:
9
10- SCPI support.
11- Basic PSCI support (CPU_ON, CPU_OFF, SYSTEM_RESET, SYSTEM_OFF). Note that CPU0
12 can't be turned off, so there is a workaround to hide this from the caller.
13- GICv2 driver set up.
14- Basic SIP services (read efuse data, enable/disable JTAG).
15
16In order to build it:
17
18.. code:: shell
19
20 CROSS_COMPILE=aarch64-linux-gnu- make DEBUG=1 PLAT=g12a
21
22This port has been tested on a SEI510 board. After building it, follow the
23instructions in the `gxlimg repository` or `U-Boot repository`_, replacing the
24mentioned **bl31.img** by the one built from this port.
25
26.. _gxlimg repository: https://github.com/repk/gxlimg/blob/master/README.g12a
27.. _U-Boot repository: https://github.com/u-boot/u-boot/blob/master/board/amlogic/sei510/README