檢視 ODROID-C4 的原始碼

[[File:C4_k.jpg|500px|ODROID-C4]]

== Board Description ==
[[File:C4_board.jpg|600px|ODROID-C4 Board]]
<br>
[[File:C4_board_detail.png|600px|ODROID-C4 Detail]]

== Pin definition ==
[[file:C4_40pinmap_rev0.4.png|500px|]]

* UART signals are driven at 1.8V.

== Build Android ==

=== Download Toolchains ===
; U-boot
: http://releases.linaro.org/archive/14.09/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.9-2014.09_linux.tar.xz
: http://releases.linaro.org/archive/14.04/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2014.04_linux.tar.xz
; Linux kernel
: https://releases.linaro.org/components/toolchain/binaries/6.3-2017.05/aarch64-linux-gnu/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu.tar.xz

=== Set PATH ===
<pre>
$ export PATH=$PATH:/opt/toolchains/gcc-linaro-aarch64-none-elf-4.9-2014.09_linux/bin
$ export PATH=$PATH:/opt/toolchains/gcc-linaro-arm-none-eabi-4.8-2014.04_linux/bin
$ export PATH=$PATH:/opt/toolchains/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin
</pre>
=== Check out full source code ===
; 32 bit
<pre>
$ mkdir odroid-c4
$ cd odroid-c4
$ repo init -u https://github.com/hardkernel/android.git -b g12_9.0.0_master
$ repo sync
</pre>
; 64 bit
<pre>
$ mkdir odroid-c4
$ cd odroid-c4
$ repo init -u https://github.com/hardkernel/android.git -b g12_9.0.0_64_master
$ repo sync
</pre>

=== Build ===
<pre>
$ source build/envsetup.sh
$ lunch odroidc4-eng
$ make -j<core number>
</pre>

== One touch self install ==
; Create image
: make -j<core number> selfinstall

; Burn image
<pre>
$ sudo dd if=out/target/product/odroidc4/selfinstall-odroidc4.img of=/dev/sdd
$ sync
$ sudo eject /dev/sdd
</pre>


== Android note ==
* Disable ICMP for enable ping
** sysctl -w net.ipv4.icmp_echo_ignore_all=0

== Reference ==
* [https://wiki.odroid.com/odroid-c4/software/building_android, ODROID-C4 Building android]
* [https://wiki.odroid.com/odroid-c4/odroid-c4, ODROID-C4]