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1U-Boot for ODROID-C2
2====================
3
4ODROID-C2 is a single board computer manufactured by Hardkernel
5Co. Ltd with the following specifications:
6
7 - Amlogic S905 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
17Schematics are available on the manufacturer website.
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 odroid-c2_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 > DIR=odroid-c2
40 > git clone --depth 1 \
41       https://github.com/hardkernel/u-boot.git -b odroidc2-v2015.01 \
42       $DIR
43 > $DIR/fip/fip_create --bl30  $DIR/fip/gxb/bl30.bin \
44                       --bl301 $DIR/fip/gxb/bl301.bin \
45                       --bl31  $DIR/fip/gxb/bl31.bin \
46                       --bl33  u-boot.bin \
47                       $DIR/fip.bin
48 > $DIR/fip/fip_create --dump $DIR/fip.bin
49 > cat $DIR/fip/gxb/bl2.package $DIR/fip.bin > $DIR/boot_new.bin
50 > $DIR/fip/gxb/aml_encrypt_gxb --bootsig \
51                                --input $DIR/boot_new.bin \
52                                --output $DIR/u-boot.img
53 > dd if=$DIR/u-boot.img of=$DIR/u-boot.gxbb bs=512 skip=96
54
55and then write the image to SD with:
56
57 > DEV=/dev/your_sd_device
58 > BL1=$DIR/sd_fuse/bl1.bin.hardkernel
59 > dd if=$BL1 of=$DEV conv=fsync bs=1 count=442
60 > dd if=$BL1 of=$DEV conv=fsync bs=512 skip=1 seek=1
61 > dd if=$DIR/u-boot.gxbb of=$DEV conv=fsync bs=512 seek=97
62