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doc: boards: amlogic: update documentation for W400

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Improve documentation.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Link: https://lore.kernel.org/r/20230320114609.930145-29-christianshewitt@gmail.com
[narmstrong: fixed doc build]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Christian Hewitt 2023-03-20 11:46:04 +00:00 committed by Neil Armstrong
parent db7b053e69
commit feacbb1586
1 changed files with 61 additions and 53 deletions
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38
doc/board/amlogic/w400.rst
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@ -1,10 +1,9 @@
.. SPDX-License-Identifier: GPL-2.0+ .. SPDX-License-Identifier: GPL-2.0+
U-Boot for Amlogic W400 U-Boot for Amlogic W400 (S922X)
======================= ===============================
U200 is a reference board manufactured by Amlogic with the following W400 is a reference board manufactured by Amlogic with the following specification:
specifications:
- Amlogic S922X ARM Cortex-A53 dual-core + Cortex-A73 quad-core SoC - Amlogic S922X ARM Cortex-A53 dual-core + Cortex-A73 quad-core SoC
- 2GB DDR4 SDRAM - 2GB DDR4 SDRAM
@ -20,7 +19,7 @@ specifications:
Schematics are available from Amlogic on demand. Schematics are available from Amlogic on demand.
U-Boot compilation U-Boot Compilation
------------------ ------------------
.. code-block:: bash .. code-block:: bash
@ -29,12 +28,21 @@ U-Boot compilation
$ make w400_defconfig $ make w400_defconfig
$ make $ make
Image creation U-Boot Signing with Pre-Built FIP repo
-------------- --------------------------------------
Amlogic doesn't provide sources for the firmware and for tools needed .. code-block:: bash
to create the bootloader image, so it is necessary to obtain them from
the git tree published by the board vendor: $ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
$ cd amlogic-boot-fip
$ mkdir my-output-dir
$ ./build-fip.sh jethub-j100 /path/to/u-boot/u-boot.bin my-output-dir
U-Boot Manual Signing
---------------------
Amlogic does not provide sources for the firmware and tools needed to create a bootloader
image so it is necessary to obtain binaries from sources published by the board vendor:
.. code-block:: bash .. code-block:: bash
@ -49,7 +57,7 @@ the git tree published by the board vendor:
$ make $ make
$ export UBOOTDIR=$PWD $ export UBOOTDIR=$PWD
Download the latest Amlogic Buildroot package, and extract it : Download the latest Amlogic buildroot package and extract it:
.. code-block:: bash .. code-block:: bash
@ -58,7 +66,7 @@ Download the latest Amlogic Buildroot package, and extract it :
$ export BRDIR=$PWD/buildroot_openlinux_kernel_4.9_fbdev_20180706 $ export BRDIR=$PWD/buildroot_openlinux_kernel_4.9_fbdev_20180706
$ export FIPDIR=$BRDIR/bootloader/uboot-repo/fip $ export FIPDIR=$BRDIR/bootloader/uboot-repo/fip
Go back to mainline U-Boot source tree then : Go back to the mainline U-Boot source tree then:
.. code-block:: bash .. code-block:: bash
@ -128,10 +136,10 @@ Go back to mainline U-Boot source tree then :
--ddrfw8 fip/aml_ddr.fw \ --ddrfw8 fip/aml_ddr.fw \
--level v3 --level v3
and then write the image to SD with: Then write U-Boot to SD or eMMC with:
.. code-block:: bash .. code-block:: bash
$ DEV=/dev/your_sd_device $ 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=512 skip=1 seek=1
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=444 $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=440