mirror of
https://github.com/AsahiLinux/u-boot
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113 lines
3.5 KiB
ReStructuredText
113 lines
3.5 KiB
ReStructuredText
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.. SPDX-License-Identifier: GPL-2.0+
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U-Boot for Videostrong KII Pro (S905)
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=====================================
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Videostrong KII Pro is an Android STB manufactured by Videostrong and
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based on the Amlogic p201 reference board, with the following specification:
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- Amlogic S905 ARM Cortex-A53 quad-core SoC @ 1.5GHz
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- ARM Mali 450 GPU
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- 2GB DDR3 SDRAM
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- 16GB eMMC
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- Gigabit Ethernet
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- Boardcom BCM4335 WiFi and BT 4.0
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- HDMI 2.0 4K/60Hz display
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- 3x USB 2.0 host
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- 1x USB 2.0 otg
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- microSD
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- Infrared receiver
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- Blue LED
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- Red LED
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- Power button (case, front)
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- Reset button (underside)
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- DVB Card: DVB-S and DVB-T/C
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Schematics are not publicly available.
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U-Boot Compilation
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------------------
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.. code-block:: bash
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$ export CROSS_COMPILE=aarch64-none-elf-
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$ make videostrong-kii-pro_defconfig
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$ make
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U-Boot Signing with Pre-Built FIP repo
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--------------------------------------
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.. code-block:: bash
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$ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
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$ cd amlogic-boot-fip
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$ mkdir my-output-dir
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$ ./build-fip.sh wetek-play2 /path/to/u-boot/u-boot.bin my-output-dir
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U-Boot Manual Signing
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---------------------
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Amlogic does not provide sources for the firmware and tools needed to create
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a bootloader image and Videostrong has not publicly shared the U-Boot sources
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needed to build FIP binaries for signing. However you can use the WeTek
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Play2 binaries from the amlogic-boot-fip repo as the WeTek Play2 and the
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Videostrong KII Pro share the same RAM chips.
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.. code-block:: bash
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$ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
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$ cd amlogic-boot-fip/wetek-play2
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$ export FIPDIR=$PWD
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Go back to the mainline U-Boot source tree then:
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.. code-block:: bash
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$ mkdir fip
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$ cp $FIPDIR/bl2.bin fip/
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$ cp $FIPDIR/acs.bin fip/
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$ cp $FIPDIR/bl21.bin fip/
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$ cp $FIPDIR/bl30.bin fip/
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$ cp $FIPDIR/bl301.bin fip/
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$ cp $FIPDIR/bl31.img fip/
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$ cp u-boot.bin fip/bl33.bin
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$ $FIPDIR/blx_fix.sh \
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fip/bl30.bin \
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fip/zero_tmp \
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fip/bl30_zero.bin \
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fip/bl301.bin \
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fip/bl301_zero.bin \
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fip/bl30_new.bin \
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bl30
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$ $FIPDIR/fip_create --bl30 fip/bl30_new.bin \
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--bl31 fip/bl31.img \
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--bl33 fip/bl33.bin \
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fip/fip.bin
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$ sed -i 's/\x73\x02\x08\x91/\x1F\x20\x03\xD5/' fip/bl2.bin
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$ python3 $FIPDIR/acs_tool.py fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
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$ $FIPDIR/blx_fix.sh \
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fip/bl2_acs.bin \
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fip/zero_tmp \
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fip/bl2_zero.bin \
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fip/bl21.bin \
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fip/bl21_zero.bin \
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fip/bl2_new.bin \
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bl2
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$ cat fip/bl2_new.bin fip/fip.bin > fip/boot_new.bin
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$ $FIPDIR/aml_encrypt_gxb --bootsig \
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--input fip/boot_new.bin
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--output fip/u-boot.bin
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Then write U-Boot to SD or eMMC with:
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.. code-block:: bash
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$ DEV=/dev/boot_device
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$ dd if=fip/u-boot.bin of=fip/u-boot.bin.gxbb bs=512 conv=fsync
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$ dd if=fip/u-boot.bin of=fip/u-boot.bin.gxbb bs=512 seek=9 skip=8 count=87 conv=fsync,notrunc
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$ dd if=/dev/zero of=fip/u-boot.bin.gxbb bs=512 seek=8 count=1 conv=fsync,notrunc
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$ dd if=bl1.bin.hardkernel of=fip/u-boot.bin.gxbb bs=512 seek=2 skip=2 count=1 conv=fsync,notrunc
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$ ./aml_chksum fip/u-boot.bin.gxbb
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$ dd if=fip/u-boot.bin.gxbb of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
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$ dd if=fip/u-boot.bin.gxbb of=$DEV conv=fsync,notrunc bs=1 count=440
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