1U-Boot for Khadas VIM 2======================= 3 4Khadas VIM is an Open Source DIY Box manufactured by Shenzhen Wesion 5Technology Co., Ltd 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 - 10/100 Ethernet 11 - HDMI 2.0 4K/60Hz display 12 - 40-pin GPIO header 13 - 2 x USB 2.0 Host, 1 x USB 2.0 Type-C OTG 14 - 8GB/16GBeMMC 15 - microSD 16 - SDIO Wifi Module, Bluetooth 17 - Two channels IR receiver 18 19Currently the u-boot port supports the following devices: 20 - serial 21 - eMMC, microSD 22 - Ethernet 23 24U-Boot compilation 25================== 26 27 > export ARCH=arm 28 > export CROSS_COMPILE=aarch64-none-elf- 29 > make khadas-vim_defconfig 30 > make 31 32Image creation 33============== 34 35Amlogic doesn't provide sources for the firmware and for tools needed 36to create the bootloader image, so it is necessary to obtain them from 37the 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:$PATH 44 > git clone https://github.com/khadas/u-boot -b Vim vim-u-boot 45 > cd vim-u-boot 46 > make kvim_defconfig 47 > make 48 > export FIPDIR=$PWD/fip 49 50Go 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 > $FIPDIR/gxl/aml_encrypt_gxl --bootmk \ 86 --output fip/u-boot.bin \ 87 --bl2 fip/bl2.n.bin.sig \ 88 --bl30 fip/bl30_new.bin.enc \ 89 --bl31 fip/bl31.img.enc \ 90 --bl33 fip/bl33.bin.enc 91 92and then write the image to SD with: 93 94 > DEV=/dev/your_sd_device 95 > dd if=fip/u-boot.bin.sd.bin of=$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 97