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doc: boards: amlogic: update documentation for Radxa Zero

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Improve documentation.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Link: https://lore.kernel.org/r/20230320114609.930145-24-christianshewitt@gmail.com
[narmstrong: fixed doc build]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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Christian Hewitt 2023-03-20 11:45:59 +00:00 • committed by Neil Armstrong
parent da8d658093
commit 16fa2c4238
1 changed files with 25 additions and 21 deletions
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46
doc/board/amlogic/radxa-zero.rst
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@ -1,14 +1,13 @@
.. SPDX-License-Identifier: GPL-2.0+ .. SPDX-License-Identifier: GPL-2.0+
U-Boot for Radxa Zero U-Boot for Radxa Zero (S905Y2)
===================== ==============================
Radxa Zero is a small form factor SBC based on the Amlogic S905Y2 Radxa Zero is a small form factor SBC based on the Amlogic S905Y2 chipset that ships in
chipset that ships in a number of RAM/eMMC configurations: a number of RAM/eMMC configurations:
Boards with 512MB/1GB LPDDR4 RAM have no eMMC storage and BCM43436 512MB/1GB LPDDR4 RAM boards have no eMMC and BCM43436 wireless (2.4GHz b/g/n) while the
wireless (2.4GHz b/g/n) while 2GB/4GB boards have 8/16/32/64/128GB 2GB/4GB boards have 8/16/32/64/128GB eMMC and BCM4345 wireless (2.4/5GHz a/b/g/n/ac).
eMMC storage and BCM4345 wireless (2.4/5GHz a/b/g/n/ac).
- Amlogic S905Y2 quad-core Cortex-A53 - Amlogic S905Y2 quad-core Cortex-A53
- Mali G31-MP2 GPU - Mali G31-MP2 GPU
@ -18,11 +17,9 @@ eMMC storage and BCM4345 wireless (2.4/5GHz a/b/g/n/ac).
- 1x micro SD Card slot - 1x micro SD Card slot
- 40 Pin GPIO header - 40 Pin GPIO header
Schematics are available on the manufacturer website: Schematics are available on the manufacturer website: https://dl.radxa.com/zero/docs/hw
https://dl.radxa.com/zero/docs/hw/RADAX_ZERO_V13_SCH_20210309.pdf U-Boot Compilation
U-Boot compilation
------------------ ------------------
.. code-block:: bash .. code-block:: bash
@ -31,14 +28,21 @@ U-Boot compilation
$ make radxa-zero_defconfig $ make radxa-zero_defconfig
$ make $ make
Image creation U-Boot Signing with Pre-Built FIP repo
-------------- --------------------------------------
For simplified usage, pleaser refer to :doc:`pre-generated-fip` with codename `radxa-zero` .. code-block:: bash
Amlogic does not provide sources for the firmware and for tools needed $ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
to create the bootloader image, so it is necessary to obtain them from $ cd amlogic-boot-fip
git trees published by the board vendor: $ mkdir my-output-dir
$ ./build-fip.sh radxa-zero /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
@ -61,16 +65,16 @@ git trees published by the board vendor:
$ cd ../fip/radxa-zero $ cd ../fip/radxa-zero
$ make $ make
This will generate: This will generate the signed U-Boot binaries:
.. code-block:: bash .. code-block:: bash
$ u-boot.bin u-boot.bin.sd.bin u-boot.bin.usb.bl2 u-boot.bin.usb.tpl $ u-boot.bin u-boot.bin.sd.bin u-boot.bin.usb.bl2 u-boot.bin.usb.tpl
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