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.. SPDX-License-Identifier: GPL-2.0+
U-Boot for Libre Computer AML-S905D3-CC 'Solitude' (S905D3)
===========================================================
AML-S905D3-CC is a Single Board Computer manufactured by Libre Computer Technology with
the following specifications:
- Amlogic S905D3 Cortex-A55 quad-core SoC
- 2 or 4GB LPDDR4 SDRAM
- Gigabit Ethernet
- HDMI 2.1 display
- 40-pin GPIO header
- 4 x USB 3.0 Host, 1 x USB 2.0 Type-C
- eMMC 5.x SM Interface for Libre Computer Modules
- microSD
- Infrared receiver
Schematics are available on the manufacturer website.
U-Boot Compilation
------------------
.. code-block:: bash
$ export CROSS_COMPILE=aarch64-none-elf-
$ make aml-s905d3-cc_defconfig
$ make
U-Boot Signing with Pre-Built FIP repo
--------------------------------------
.. code-block:: bash
$ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
$ cd amlogic-boot-fip
$ mkdir my-output-dir
$ ./build-fip.sh aml-s905d3-cc /path/to/u-boot/u-boot.bin my-output-dir
Then write U-Boot to SD or eMMC with:
.. code-block:: bash
$ DEV=/dev/boot_device
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=440
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