Improve documentation.
Signed-off-by: Christian Hewitt christianshewitt@gmail.com --- doc/board/amlogic/radxa-zero.rst | 45 +++++++++++++++++--------------- 1 file changed, 24 insertions(+), 21 deletions(-)
diff --git a/doc/board/amlogic/radxa-zero.rst b/doc/board/amlogic/radxa-zero.rst index f5611f52ec..e8a8d87320 100644 --- a/doc/board/amlogic/radxa-zero.rst +++ b/doc/board/amlogic/radxa-zero.rst @@ -1,14 +1,13 @@ .. 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 -chipset that ships in a number of RAM/eMMC configurations: +Radxa Zero is a small form factor SBC based on the Amlogic S905Y2 chipset that ships in +a number of RAM/eMMC configurations:
-Boards with 512MB/1GB LPDDR4 RAM have no eMMC storage and BCM43436 -wireless (2.4GHz b/g/n) while 2GB/4GB boards have 8/16/32/64/128GB -eMMC storage and BCM4345 wireless (2.4/5GHz a/b/g/n/ac). +512MB/1GB LPDDR4 RAM boards have no eMMC and BCM43436 wireless (2.4GHz b/g/n) while the +2GB/4GB boards have 8/16/32/64/128GB eMMC and BCM4345 wireless (2.4/5GHz a/b/g/n/ac).
- Amlogic S905Y2 quad-core Cortex-A53 - 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 - 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 @@ -31,14 +28,20 @@ U-Boot compilation $ make radxa-zero_defconfig $ make
-Image creation --------------- +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 radxa-zero /path/to/u-boot/u-boot.bin my-output-dir
-For simplified usage, pleaser refer to :doc:`pre-generated-fip` with codename `radxa-zero` +U-Boot Manual Signing +---------------------
-Amlogic does not provide sources for the firmware and for tools needed -to create the bootloader image, so it is necessary to obtain them from -git trees published by the board vendor: +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
@@ -61,16 +64,16 @@ git trees published by the board vendor: $ cd ../fip/radxa-zero $ make
-This will generate: +This will generate the signed U-Boot binaries:
.. code-block:: bash
$ 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
- $ 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=1 count=444 + $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=440