@@ -1,10 +1,10 @@
.. SPDX-License-Identifier: GPL-2.0+
-U-Boot for JetHub J80
-======================
+U-Boot for JetHub J80 (S905W)
+=============================
-JetHome Jethub H1 (http://jethome.ru/jethub-h1) is a home automation
-controller manufactured by JetHome with the following specifications:
+JetHome Jethub H1 (http://jethome.ru/jethub-h1) is a home automation controller device
+manufactured by JetHome with the following specifications:
- Amlogic S905W (ARM Cortex-A53) quad-core up to 1.5GHz
- No video out
@@ -21,7 +21,7 @@ controller manufactured by JetHome with the following specifications:
- DC source 5V microUSB
- Square plastic case
-U-Boot compilation
+U-Boot Compilation
------------------
.. code-block:: bash
@@ -30,14 +30,20 @@ U-Boot compilation
$ make jethub_j80_defconfig
$ make
-Image creation
---------------
+U-Boot Signing with Pre-Built FIP repo
+--------------------------------------
-For simplified usage, pleaser refer to :doc:`pre-generated-fip` with codename `jethub-j80`
+.. 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 jethub-j80 /path/to/u-boot/u-boot.bin my-output-dir
+
+U-Boot Manual Signing
+---------------------
-Amlogic doesn't provide sources for the firmware and for tools needed
-to create the bootloader image, so it is necessary to obtain binaries
-from the git tree 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
@@ -45,7 +51,7 @@ from the git tree published by the board vendor:
$ cd jethub-u-boot
$ export FIPDIR=$PWD
-Go back to mainline U-Boot source tree then :
+Go back to the mainline U-Boot source tree then:
.. code-block:: bash
@@ -84,16 +90,16 @@ Go back to mainline U-Boot source tree then :
$ $FIPDIR/j80/aml_encrypt_gxl --bl3enc --input fip/bl33.bin --compress lz4
$ $FIPDIR/j80/aml_encrypt_gxl --bl2sig --input fip/bl2_new.bin --output fip/bl2.n.bin.sig
$ $FIPDIR/j80/aml_encrypt_gxl --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
+ --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
-and then write the image to SD/eMMC 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
Improve documentation. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> --- doc/board/amlogic/jethub-j80.rst | 46 ++++++++++++++++++-------------- 1 file changed, 26 insertions(+), 20 deletions(-)