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>

== Flashing images ==
*Enter fastboot mode by turning ON switch 3.
*Flash images by running the following commands:
** fastboot flash boot out/target/product/hikey960/boot.img
*Turn OFF switch 3 and power cycle the board.

== Building the kernel ==
*Run the following commands:
**mkdir repo-common
**cd repo-common
**repo init -u https://android.googlesource.com/kernel/manifest -b hikey-linaro-android-4.19
**repo sync -j8 -c
**rm -rf out
**rm build.config
**BUILD_CONFIG=hikey-linaro/build.config.hikey960 ./build/build.sh
*Update the kernel in the boot image.
**Copy hi3660-hikey960.dtb (out/android-hikey-linaro-4.19/dist/hi3660-hikey960.dtb) to the hikey-kernel directory as file hi3660-hikey960.dtb-4.19.
**Copy the Image file (out/android-hikey-linaro-4.19/dist/Image.gz-dtb) to the hikey-kernel directory as file Image.gz-dtb-hikey960-4.19.
<pre>
 cp repo-common/out/android-hikey-linaro-4.19/dist/hi3660-hikey960.dtb hikey960/device/linaro/hikey-kernel/hi3660-hikey960.dtb-4.19
 cp repo-common/out/android-hikey-linaro-4.19/dist/Image.gz-dtb hikey960/device/linaro/hikey-kernel/Image.gz-dtb-hikey960-4.19
</pre>
*Make the boot image:
**make bootimage -j24

== Enable UART ==
* In repo-common/hikey-linaro
<pre>
diff --git a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
index 80334e500..a2f1de30b 100644
--- a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
+++ b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
@@ -494,7 +494,7 @@
                        clock-names = "uartclk", "apb_pclk";
                        pinctrl-names = "default";
                        pinctrl-0 = <&uart0_pmx_func &uart0_cfg_func>;
-                       status = "disabled";
+                       status = "ok";
                };

                uart1: serial@fdf00000 {
@@ -508,7 +508,7 @@
                        clock-names = "uartclk", "apb_pclk";
                        pinctrl-names = "default";
                        pinctrl-0 = <&uart1_pmx_func &uart1_cfg_func>;
-                       status = "disabled";
+                       status = "ok";
                };

                uart2: serial@fdf03000 {
</pre>

== Setting the serial number ==
=== To set the random serial number, run ===
**fastboot getvar nve:SN@16\_DIGIT\_NUMBER
*Bootloader exports the generated serial number to the kernel using androidboot.serialno=.

=== Setting monitor resolution ===
*Edit the device/linaro/hikey/hikey960/BoardConfig.mk parameter BOARD_KERNEL_CMDLINE and configure the video setting. For example, the setting for a 24-inch monitor is video=HDMI-A-1:1280x800@60.

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

== Reference ==
* [https://source.android.com/setup/build/devices, Build steps]
* [https://snapshots.linaro.org/96boards/hikey960/linaro/aosp-master/latest/, Pre build image]