U-Boot for ODROID-C2
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====================
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ODROID-C2 is a single board computer manufactured by Hardkernel
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Co. Ltd with the following specifications:
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- Amlogic S905 ARM Cortex-A53 quad-core SoC @ 2GHz
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- ARM Mali 450 GPU
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- 2GB DDR3 SDRAM
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- Gigabit Ethernet
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- HDMI 2.0 4K/60Hz display
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- 40-pin GPIO header
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- 4 x USB 2.0 Host, 1 x USB OTG
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- eMMC, microSD
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- Infrared receiver
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Schematics are available on the manufacturer website.
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Currently the u-boot port supports the following devices:
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- serial
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- eMMC, microSD
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- Ethernet
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u-boot compilation
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==================
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> export ARCH=arm
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> export CROSS_COMPILE=aarch64-none-elf-
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> make odroid-c2_defconfig
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> make
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Image creation
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==============
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Amlogic doesn't provide sources for the firmware and for tools needed
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to create the bootloader image, so it is necessary to obtain them from
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the git tree published by the board vendor:
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> DIR=odroid-c2
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> git clone --depth 1 \
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https://github.com/hardkernel/u-boot.git -b odroidc2-v2015.01 \
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$DIR
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> $DIR/fip/fip_create --bl30 $DIR/fip/gxb/bl30.bin \
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--bl301 $DIR/fip/gxb/bl301.bin \
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--bl31 $DIR/fip/gxb/bl31.bin \
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--bl33 u-boot.bin \
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$DIR/fip.bin
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> $DIR/fip/fip_create --dump $DIR/fip.bin
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> cat $DIR/fip/gxb/bl2.package $DIR/fip.bin > $DIR/boot_new.bin
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> $DIR/fip/gxb/aml_encrypt_gxb --bootsig \
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--input $DIR/boot_new.bin \
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--output $DIR/u-boot.img
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> dd if=$DIR/u-boot.img of=$DIR/u-boot.gxbb bs=512 skip=96
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and then write the image to SD with:
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> DEV=/dev/your_sd_device
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> BL1=$DIR/sd_fuse/bl1.bin.hardkernel
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> dd if=$BL1 of=$DEV conv=fsync bs=1 count=442
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> dd if=$BL1 of=$DEV conv=fsync bs=512 skip=1 seek=1
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> dd if=$DIR/u-boot.gxbb of=$DEV conv=fsync bs=512 seek=97
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