.. SPDX-License-Identifier: GPL-2.0+ U-Boot for Videostrong KII Pro (S905) ===================================== Videostrong KII Pro is an Android STB manufactured by Videostrong and based on the Amlogic p201 reference board, with the following specification: - Amlogic S905 ARM Cortex-A53 quad-core SoC @ 1.5GHz - ARM Mali 450 GPU - 2GB DDR3 SDRAM - 16GB eMMC - Gigabit Ethernet - Boardcom BCM4335 WiFi and BT 4.0 - HDMI 2.0 4K/60Hz display - 3x USB 2.0 host - 1x USB 2.0 otg - microSD - Infrared receiver - Blue LED - Red LED - Power button (case, front) - Reset button (underside) - DVB Card: DVB-S and DVB-T/C Schematics are not publicly available. U-Boot Compilation ------------------ .. code-block:: bash $ export CROSS_COMPILE=aarch64-none-elf- $ make videostrong-kii-pro_defconfig $ make 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 wetek-play2 /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 and Videostrong has not publicly shared the U-Boot sources needed to build FIP binaries for signing. However you can use the WeTek Play2 binaries from the amlogic-boot-fip repo as the WeTek Play2 and the Videostrong KII Pro share the same RAM chips. .. code-block:: bash $ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1 $ cd amlogic-boot-fip/wetek-play2 $ export FIPDIR=$PWD Go back to the mainline U-Boot source tree then: .. code-block:: bash $ mkdir fip $ cp $FIPDIR/bl2.bin fip/ $ cp $FIPDIR/acs.bin fip/ $ cp $FIPDIR/bl21.bin fip/ $ cp $FIPDIR/bl30.bin fip/ $ cp $FIPDIR/bl301.bin fip/ $ cp $FIPDIR/bl31.img fip/ $ 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 $ $FIPDIR/fip_create --bl30 fip/bl30_new.bin \ --bl31 fip/bl31.img \ --bl33 fip/bl33.bin \ fip/fip.bin $ sed -i 's/\x73\x02\x08\x91/\x1F\x20\x03\xD5/' fip/bl2.bin $ python3 $FIPDIR/acs_tool.py 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 $ cat fip/bl2_new.bin fip/fip.bin > fip/boot_new.bin $ $FIPDIR/aml_encrypt_gxb --bootsig \ --input fip/boot_new.bin --output fip/u-boot.bin Then write U-Boot to SD or eMMC with: .. code-block:: bash $ DEV=/dev/boot_device $ dd if=fip/u-boot.bin of=fip/u-boot.bin.gxbb bs=512 conv=fsync $ dd if=fip/u-boot.bin of=fip/u-boot.bin.gxbb bs=512 seek=9 skip=8 count=87 conv=fsync,notrunc $ dd if=/dev/zero of=fip/u-boot.bin.gxbb bs=512 seek=8 count=1 conv=fsync,notrunc $ dd if=bl1.bin.hardkernel of=fip/u-boot.bin.gxbb bs=512 seek=2 skip=2 count=1 conv=fsync,notrunc $ ./aml_chksum fip/u-boot.bin.gxbb $ dd if=fip/u-boot.bin.gxbb of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1 $ dd if=fip/u-boot.bin.gxbb of=$DEV conv=fsync,notrunc bs=1 count=440