@@ -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
Improve documentation. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> --- doc/board/amlogic/khadas-vim2.rst | 76 +++++++++++++++++-------------- 1 file changed, 41 insertions(+), 35 deletions(-)