From 12ea40d29dca45cbad0d29d1249569f366c30840 Mon Sep 17 00:00:00 2001
From: Neil Armstrong <neil.armstrong@linaro.org>
Date: Fri, 20 Sep 2024 15:33:34 +0200
Subject: ARM: meson: add support for Libre Computer aml-s905d3-cc

Add support for the Libre Computer aml-s905d3-cc "Solitude" board:
https://libre.computer/products/aml-s905d3-cc/

The Solitude board has a Credit Card form factor, similar to the
the previous "Le Potato" card, but with the Amlogic A311D SoC,
MIPI DSI and CSI connectors. PoE header and a single USB2 Type-C
connector replacing the microUSB one for power and USB 2.0.

The board has an embedded SPI NOR flash, and EFI Capsule support
is added.

The GUID is dynamically generated for the board, to get it:
=> efidebug capsule esrt
========================================
ESRT: fw_resource_count=1
ESRT: fw_resource_count_max=1
ESRT: fw_resource_version=1
[entry 0]==============================
ESRT: fw_class=4302C3CB-2502-5EFE-87E0-894A8A322893
ESRT: fw_type=unknown
ESRT: fw_version=0
ESRT: lowest_supported_fw_version=0
ESRT: capsule_flags=0
ESRT: last_attempt_version=0
ESRT: last_attempt_status=success
========================================

On the host (with the aml_encrypt_g12a result binary):
$ eficapsule --guid 4302C3CB-2502-5EFE-87E0-894A8A322893 -i 1 u-boot.bin u-boot.cap

On the board (from USB disk containing u-boot.cap at root):
=> load usb 0:1 $kernel_addr_r u-boot.cap
=> efidebug capsule update $kernel_addr_r

The binary will then be flashed on the SPI.

Link: https://lore.kernel.org/r/20240920-u-boot-topic-libre-computer-solitude-alta-v1-2-8915b108840b@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 doc/board/amlogic/aml-s905d3-cc.rst | 46 +++++++++++++++++++++++++++++++++++++
 doc/board/amlogic/index.rst         |  1 +
 2 files changed, 47 insertions(+)
 create mode 100644 doc/board/amlogic/aml-s905d3-cc.rst

(limited to 'doc')

diff --git a/doc/board/amlogic/aml-s905d3-cc.rst b/doc/board/amlogic/aml-s905d3-cc.rst
new file mode 100644
index 00000000000..083a591fc52
--- /dev/null
+++ b/doc/board/amlogic/aml-s905d3-cc.rst
@@ -0,0 +1,46 @@
+.. 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
diff --git a/doc/board/amlogic/index.rst b/doc/board/amlogic/index.rst
index de91b21f977..dcd935224ac 100644
--- a/doc/board/amlogic/index.rst
+++ b/doc/board/amlogic/index.rst
@@ -86,6 +86,7 @@ Board Documentation
    :maxdepth: 1
 
    aml-a311d-cc
+   aml-s905d3-cc
    bananapi-cm4io
    bananapi-m2pro
    bananapi-m2s
-- 
cgit v1.3.1