doc/board/amlogic/libretech-cc.rst

   1 .. SPDX-License-Identifier: GPL-2.0+
   2
   3 U-Boot for LibreTech CC 'LePotato' (S905X)
   4 ==========================================
   5
   6 LibreTech CC is a Single Board Computer manufactured by Libre Computer Technology with
   7 the following specifications:
   8
   9 v1:
  10
  11  - Amlogic S905X ARM Cortex-A53 quad-core SoC @ 1.5GHz
  12  - ARM Mali 450 GPU
  13  - 2GB DDR3 SDRAM
  14  - 10/100 Ethernet
  15  - HDMI 2.0 4K/60Hz display
  16  - 40-pin GPIO header
  17  - 4 x USB 2.0 Host
  18  - eMMC, microSD
  19  - Infrared receiver
  20  - Jack for CVBS and Audio
  21
  22 v2:
  23
  24  - Added SPI NOR
  25  - Removed Jack
  26
  27 Schematics are available on the manufacturer website.
  28
  29 U-Boot Compilation
  30 ------------------
  31
  32 .. code-block:: bash
  33
  34     $ export CROSS_COMPILE=aarch64-none-elf-
  35     $ make libretech-cc_defconfig
  36     $ make
  37
  38 Use libretech-cc_v2_defconfig for v2.
  39
  40 U-Boot Signing with Pre-Built FIP repo
  41 --------------------------------------
  42
  43 .. code-block:: bash
  44
  45     $ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
  46     $ cd amlogic-boot-fip
  47     $ mkdir my-output-dir
  48     $ ./build-fip.sh lepotato /path/to/u-boot/u-boot.bin my-output-dir
  49
  50 U-Boot Manual Signing
  51 ---------------------
  52
  53 Amlogic does not provide sources for the firmware and tools needed to create a bootloader
  54 image so it is necessary to obtain binaries from sources published by the board vendor:
  55
  56 .. code-block:: bash
  57
  58     $ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
  59     $ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
  60     $ tar xvfJ gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
  61     $ tar xvfJ gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
  62     $ export PATH=$PWD/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux/bin:$PWD/gcc-linaro-arm-none-eabi-4.8-2013.11_linux/bin:$PATH
  63     $ git clone https://github.com/BayLibre/u-boot.git -b libretech-cc amlogic-u-boot
  64     $ cd amlogic-u-boot
  65     $ make libretech_cc_defconfig
  66     $ make
  67     $ export FIPDIR=$PWD/fip
  68
  69 Go back to the mainline U-Boot source tree then:
  70
  71 .. code-block:: bash
  72
  73     $ mkdir fip
  74
  75     $ cp $FIPDIR/gxl/bl2.bin fip/
  76     $ cp $FIPDIR/gxl/acs.bin fip/
  77     $ cp $FIPDIR/gxl/bl21.bin fip/
  78     $ cp $FIPDIR/gxl/bl30.bin fip/
  79     $ cp $FIPDIR/gxl/bl301.bin fip/
  80     $ cp $FIPDIR/gxl/bl31.img fip/
  81     $ cp u-boot.bin fip/bl33.bin
  82
  83     $ $FIPDIR/blx_fix.sh \
  84               fip/bl30.bin \
  85               fip/zero_tmp \
  86               fip/bl30_zero.bin \
  87               fip/bl301.bin \
  88               fip/bl301_zero.bin \
  89               fip/bl30_new.bin \
  90               bl30
  91
  92     $ $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
  93
  94     $ $FIPDIR/blx_fix.sh \
  95               fip/bl2_acs.bin \
  96               fip/zero_tmp \
  97               fip/bl2_zero.bin \
  98               fip/bl21.bin \
  99               fip/bl21_zero.bin \
 100               fip/bl2_new.bin \
 101               bl2
 102
 103     $ $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl30_new.bin
 104     $ $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl31.img
 105     $ $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl33.bin
 106     $ $FIPDIR/gxl/aml_encrypt_gxl --bl2sig --input fip/bl2_new.bin --output fip/bl2.n.bin.sig
 107     $ $FIPDIR/gxl/aml_encrypt_gxl --bootmk \
 108                                   --output fip/u-boot.bin \
 109                                   --bl2 fip/bl2.n.bin.sig \
 110                                   --bl30 fip/bl30_new.bin.enc \
 111                                   --bl31 fip/bl31.img.enc \
 112                                   --bl33 fip/bl33.bin.enc
 113
 114 Then write U-Boot to SD or eMMC with:
 115
 116 .. code-block:: bash
 117
 118     $ DEV=/dev/boot_device
 119     $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
 120     $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=440