| Neil Armstrong | 514ad81 | 2017-11-27 10:16:19 +0100 | [diff] [blame] | 1 | U-Boot for LibreTech CC |
| 2 | ======================= |
| 3 | |
| 4 | LibreTech CC is a single board computer manufactured by Libre Technology |
| 5 | with the following specifications: |
| 6 | |
| 7 | - Amlogic S905X ARM Cortex-A53 quad-core SoC @ 2GHz |
| 8 | - ARM Mali 450 GPU |
| 9 | - 2GB DDR3 SDRAM |
| 10 | - Gigabit Ethernet |
| 11 | - HDMI 2.0 4K/60Hz display |
| 12 | - 40-pin GPIO header |
| 13 | - 4 x USB 2.0 Host, 1 x USB OTG |
| 14 | - eMMC, microSD |
| 15 | - Infrared receiver |
| 16 | |
| 17 | Schematics are available on the manufacturer website. |
| 18 | |
| 19 | Currently the U-Boot port supports the following devices: |
| 20 | - serial |
| 21 | - eMMC, microSD |
| 22 | - Ethernet |
| 23 | |
| 24 | U-Boot compilation |
| 25 | ================== |
| 26 | |
| 27 | > export ARCH=arm |
| 28 | > export CROSS_COMPILE=aarch64-none-elf- |
| 29 | > make libretech-cc_defconfig |
| 30 | > make |
| 31 | |
| 32 | Image creation |
| 33 | ============== |
| 34 | |
| 35 | Amlogic doesn't provide sources for the firmware and for tools needed |
| 36 | to create the bootloader image, so it is necessary to obtain them from |
| 37 | the git tree published by the board vendor: |
| 38 | |
| 39 | > wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz |
| 40 | > wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz |
| 41 | > tar xvfJ gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz |
| 42 | > tar xvfJ gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz |
| 43 | > 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:$PATH |
| 44 | > git clone https://github.com/BayLibre/u-boot.git -b libretech-cc amlogic-u-boot |
| 45 | > cd amlogic-u-boot |
| 46 | > make libretech_cc_defconfig |
| 47 | > make |
| 48 | > export FIPDIR=$PWD/fip |
| 49 | |
| 50 | Go back to mainline U-Boot source tree then : |
| 51 | > mkdir fip |
| 52 | |
| 53 | > cp $FIPDIR/gxl/bl2.bin fip/ |
| 54 | > cp $FIPDIR/gxl/acs.bin fip/ |
| 55 | > cp $FIPDIR/gxl/bl21.bin fip/ |
| 56 | > cp $FIPDIR/gxl/bl30.bin fip/ |
| 57 | > cp $FIPDIR/gxl/bl301.bin fip/ |
| 58 | > cp $FIPDIR/gxl/bl31.img fip/ |
| 59 | > cp u-boot.bin fip/bl33.bin |
| 60 | |
| 61 | > $FIPDIR/blx_fix.sh \ |
| 62 | fip/bl30.bin \ |
| 63 | fip/zero_tmp \ |
| 64 | fip/bl30_zero.bin \ |
| 65 | fip/bl301.bin \ |
| 66 | fip/bl301_zero.bin \ |
| 67 | fip/bl30_new.bin \ |
| 68 | bl30 |
| 69 | |
| 70 | > $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0 |
| 71 | |
| 72 | > $FIPDIR/blx_fix.sh \ |
| 73 | fip/bl2_acs.bin \ |
| 74 | fip/zero_tmp \ |
| 75 | fip/bl2_zero.bin \ |
| 76 | fip/bl21.bin \ |
| 77 | fip/bl21_zero.bin \ |
| 78 | fip/bl2_new.bin \ |
| 79 | bl2 |
| 80 | |
| 81 | > $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl30_new.bin |
| 82 | > $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl31.img |
| 83 | > $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl33.bin |
| 84 | > $FIPDIR/gxl/aml_encrypt_gxl --bl2sig --input fip/bl2_new.bin --output fip/bl2.n.bin.sig |
| 85 | > $FIPDIR/gxl/aml_encrypt_gxl --bootmk \ |
| 86 | --output fip/u-boot.bin \ |
| 87 | --bl2 fip/bl2.n.bin.sig \ |
| 88 | --bl30 fip/bl30_new.bin.enc \ |
| 89 | --bl31 fip/bl31.img.enc \ |
| 90 | --bl33 fip/bl33.bin.enc |
| 91 | |
| 92 | and then write the image to SD with: |
| 93 | |
| 94 | > DEV=/dev/your_sd_device |
| 95 | > dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1 |
| 96 | > dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=444 |