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72d2535afd
BL2 is unconditionally setting 0 (OPTEE_AARCH64) in arg0 even when the BL32 image is 32bit (OPTEE_AARCH32). This is causing the boot to hang when ATOS (32bit Amlogic BL32 binary-only TEE OS) is used. Since we are not aware of any Amlogic platform shipping a 64bit version of ATOS we can hardcode OPTEE_AARCH32 / MODE_RW_32 when using ATOS. Signed-off-by: Carlo Caione <ccaione@baylibre.com> Change-Id: Iaea47cf6dc48bf8a646056761f02fb81b41c78a3
27 lines
979 B
ReStructuredText
27 lines
979 B
ReStructuredText
Amlogic Meson A113D (AXG)
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===========================
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The Amlogic Meson A113D is a SoC with a quad core Arm Cortex-A53 running at
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~1.2GHz. It also contains a Cortex-M3 used as SCP.
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This port is a minimal implementation of BL31 capable of booting mainline U-Boot
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and Linux:
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- SCPI support.
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- Basic PSCI support (CPU_ON, CPU_OFF, SYSTEM_RESET, SYSTEM_OFF). Note that CPU0
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can't be turned off, so there is a workaround to hide this from the caller.
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- GICv2 driver set up.
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- Basic SIP services (read efuse data, enable/disable JTAG).
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In order to build it:
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.. code:: shell
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CROSS_COMPILE=aarch64-none-elf- make DEBUG=1 PLAT=axg [SPD=opteed]
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[AML_USE_ATOS=1 when using ATOS as BL32]
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This port has been tested on a A113D board. After building it, follow the
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instructions in the `U-Boot repository`_, replacing the mentioned **bl31.img**
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by the one built from this port.
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.. _U-Boot repository: https://github.com/u-boot/u-boot/blob/master/board/amlogic/s400/README
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