doc: boards: amlogic: add documentation for GS-King-X
GS-King-X is also supported with the beelink-s922x FIP sources and can use
the GT-King defconfig. Add a board document with instructions.
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Link: https://lore.kernel.org/r/20230320114609.930145-33-christianshewitt@gmail.com
[narmstrong: fixed doc build]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
diff --git a/doc/board/amlogic/beelink-gskingx.rst b/doc/board/amlogic/beelink-gskingx.rst
new file mode 100644
index 0000000..8a8296e
--- /dev/null
+++ b/doc/board/amlogic/beelink-gskingx.rst
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+.. SPDX-License-Identifier: GPL-2.0+
+
+U-Boot for Beelink GS-King-X (S922X)
+====================================
+
+The Shenzen AZW (Beelink) GS-King-X is based on the Amlogic W400 reference board with an
+S922X-H chip and the following specifications:
+
+- 4GB LPDDR4 RAM
+- 64GB eMMC storage
+- 10/100/1000 Base-T Ethernet
+- AP6356S Wireless (802.11 a/b/g/n/ac, BT 4.1)
+- HDMI 2.1 video
+- S/PDIF optical output
+- 2x ESS9018 audio DACs
+- 4x Ricor RT6862 audio amps
+- Analogue headphone output
+- 1x USB 2.0 OTG port
+- 3x USB 3.0 ports
+- IR receiver
+- 1x micro SD card slot (internal)
+- USB SATA controller with 2x 3.5" drive bays
+- 1x Power on/off button
+
+Beelink do not provide public schematics, but have been willing to share them with known
+distro developers to assist with development.
+
+U-Boot Compilation
+------------------
+
+.. code-block:: bash
+
+ $ export CROSS_COMPILE=aarch64-none-elf-
+ $ make beelink-gsking-x_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 beelink-s922x /path/to/u-boot/u-boot.bin my-output-dir
+
+U-Boot Manual Signing
+---------------------
+
+Beelink released an Amlogic "SDK" dump in their forums but the U-Boot sources included
+result in 2GB RAM detected. The following FIPs were generated with newer sources and
+detect 4GB RAM: https://github.com/LibreELEC/amlogic-boot-fip/tree/master/beelink-s922x
+
+.. code-block:: bash
+
+ $ wget https://github.com/LibreELEC/amlogic-boot-fip/archive/master.zip
+ $ unzip master.zip
+ $ export FIPDIR=$PWD/amlogic-boot-fip/beelink-s922x
+
+Go back to the mainline U-Boot source tree then:
+
+.. code-block:: bash
+
+ $ mkdir fip
+ $ cp $FIPDIR/* fip/
+ $ cp u-boot.bin fip/bl33.bin
+
+ $ sh fip/blx_fix.sh \
+ fip/bl30.bin \
+ fip/zero_tmp \
+ fip/bl30_zero.bin \
+ fip/bl301.bin \
+ fip/bl301_zero.bin \
+ fip/bl30_new.bin \
+ bl30
+
+ $ sh fip/blx_fix.sh \
+ fip/bl2.bin \
+ fip/zero_tmp \
+ fip/bl2_zero.bin \
+ fip/acs.bin \
+ fip/bl21_zero.bin \
+ fip/bl2_new.bin \
+ bl2
+
+ $ fip/aml_encrypt_g12b --bl30sig --input fip/bl30_new.bin \
+ --output fip/bl30_new.bin.g12a.enc \
+ --level v3
+ $ fip/aml_encrypt_g12b --bl3sig --input fip/bl30_new.bin.g12a.enc \
+ --output fip/bl30_new.bin.enc \
+ --level v3 --type bl30
+ $ fip/aml_encrypt_g12b --bl3sig --input fip/bl31.img \
+ --output fip/bl31.img.enc \
+ --level v3 --type bl31
+ $ fip/aml_encrypt_g12b --bl3sig --input fip/bl33.bin --compress lz4 \
+ --output fip/bl33.bin.enc \
+ --level v3 --type bl33
+ $ fip/aml_encrypt_g12b --bl2sig --input fip/bl2_new.bin \
+ --output fip/bl2.n.bin.sig
+ $ fip/aml_encrypt_g12b --bootmk \
+ --output fip/u-boot.bin \
+ --bl2 fip/bl2.n.bin.sig \
+ --bl30 fip/bl30_new.bin.enc \
+ --bl31 fip/bl31.img.enc \
+ --bl33 fip/bl33.bin.enc \
+ --ddrfw1 fip/ddr4_1d.fw \
+ --ddrfw2 fip/ddr4_2d.fw \
+ --ddrfw3 fip/ddr3_1d.fw \
+ --ddrfw4 fip/piei.fw \
+ --ddrfw5 fip/lpddr4_1d.fw \
+ --ddrfw6 fip/lpddr4_2d.fw \
+ --ddrfw7 fip/diag_lpddr4.fw \
+ --ddrfw8 fip/aml_ddr.fw \
+ --level v3
+
+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