Improve documentation.
Signed-off-by: Christian Hewitt christianshewitt@gmail.com --- doc/board/amlogic/khadas-vim2.rst | 76 +++++++++++++++++-------------- 1 file changed, 41 insertions(+), 35 deletions(-)
diff --git a/doc/board/amlogic/khadas-vim2.rst b/doc/board/amlogic/khadas-vim2.rst index 7ac3bdcbaf..78d47f93fe 100644 --- a/doc/board/amlogic/khadas-vim2.rst +++ b/doc/board/amlogic/khadas-vim2.rst @@ -1,25 +1,25 @@ .. SPDX-License-Identifier: GPL-2.0+
-U-Boot for Khadas VIM2 -======================= +U-Boot for Khadas VIM2 (S912) +=============================
-Khadas VIM2 is an Open Source DIY Box manufactured by Shenzhen Wesion -Technology Co., Ltd with the following specifications: +Khadas VIM2 is a Single Board Computer manufactured by Shenzhen Wesion Technology Co. Ltd +with the following specifications:
- Amlogic S912 ARM Cortex-A53 octo-core SoC @ 1.5GHz - ARM Mali T860 GPU - - 2/3GB DDR4 SDRAM + - 2GB/3GB DDR4 SDRAM + - 16GB/32GB/64GB eMMC - 10/100/1000 Ethernet - HDMI 2.0 4K/60Hz display - 40-pin GPIO header - 2 x USB 2.0 Host, 1 x USB 2.0 Type-C OTG - - 16GB/32GB/64GB eMMC - 2MB SPI Flash - microSD - SDIO Wifi Module, Bluetooth - Two channels IR receiver
-U-Boot compilation +U-Boot Compilation ------------------
.. code-block:: bash @@ -28,14 +28,20 @@ U-Boot compilation $ make khadas-vim2_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 khadas-vim2 /path/to/u-boot/u-boot.bin my-output-dir
-For simplified usage, pleaser refer to :doc:`pre-generated-fip` with codename `khadas-vim2` +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 them 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
@@ -50,7 +56,7 @@ the git tree published by the board vendor: $ make $ export FIPDIR=$PWD/fip
-Go back to mainline U-Boot source tree then : +Go back to the mainline U-Boot source tree then:
.. code-block:: bash
@@ -65,40 +71,40 @@ Go back to mainline U-Boot source tree then : $ cp u-boot.bin fip/bl33.bin
$ $FIPDIR/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 + fip/bl30.bin \ + fip/zero_tmp \ + fip/bl30_zero.bin \ + fip/bl301.bin \ + fip/bl301_zero.bin \ + fip/bl30_new.bin \ + bl30
$ python $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
$ $FIPDIR/blx_fix.sh \ - fip/bl2_acs.bin \ - fip/zero_tmp \ - fip/bl2_zero.bin \ - fip/bl21.bin \ - fip/bl21_zero.bin \ - fip/bl2_new.bin \ - bl2 + fip/bl2_acs.bin \ + fip/zero_tmp \ + fip/bl2_zero.bin \ + fip/bl21.bin \ + fip/bl21_zero.bin \ + fip/bl2_new.bin \ + bl2
$ $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl30_new.bin $ $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl31.img $ $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl33.bin $ $FIPDIR/gxl/aml_encrypt_gxl --bl2sig --input fip/bl2_new.bin --output fip/bl2.n.bin.sig $ $FIPDIR/gxl/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 with: +Then write U-Boot to SD or eMMC with:
.. code-block:: bash
$ DEV=/dev/your_sd_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