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 - I2C
24 - Regulators
25 - Reset controller
26 - Clock controller
27 - ADC
28
29u-boot compilation
30==================
31
32 > export ARCH=arm
33 > export CROSS_COMPILE=aarch64-none-elf-
34 > make odroid-c2_defconfig
35 > make
36
37Image creation
38==============
39
40Amlogic doesn't provide sources for the firmware and for tools needed
41to create the bootloader image, so it is necessary to obtain them from
42the git tree published by the board vendor:
43
44 > DIR=odroid-c2
45 > git clone --depth 1 \
46       https://github.com/hardkernel/u-boot.git -b odroidc2-v2015.01 \
47       $DIR
48 > $DIR/fip/fip_create --bl30  $DIR/fip/gxb/bl30.bin \
49                       --bl301 $DIR/fip/gxb/bl301.bin \
50                       --bl31  $DIR/fip/gxb/bl31.bin \
51                       --bl33  u-boot.bin \
52                       $DIR/fip.bin
53 > $DIR/fip/fip_create --dump $DIR/fip.bin
54 > cat $DIR/fip/gxb/bl2.package $DIR/fip.bin > $DIR/boot_new.bin
55 > $DIR/fip/gxb/aml_encrypt_gxb --bootsig \
56                                --input $DIR/boot_new.bin \
57                                --output $DIR/u-boot.img
58 > dd if=$DIR/u-boot.img of=$DIR/u-boot.gxbb bs=512 skip=96
59
60and then write the image to SD with:
61
62 > DEV=/dev/your_sd_device
63 > BL1=$DIR/sd_fuse/bl1.bin.hardkernel
64 > dd if=$BL1 of=$DEV conv=fsync bs=1 count=442
65 > dd if=$BL1 of=$DEV conv=fsync bs=512 skip=1 seek=1
66 > dd if=$DIR/u-boot.gxbb of=$DEV conv=fsync bs=512 seek=97
67