View source for DART-SD410 Debian 4.14.0 Download Packages

{{PageHeader|Download packages and build.}} __toc__

{{note| NOTE:<br>
The dtb file selection was changed in this new version, it now requires a new version of skales tool (downloaded from ftp site) and a new version of boot loader files. <br>In order to get it running please update the whole system by running flashall script.|info}}
= Create directory tree =
Create the following directory tree:
<pre>
$ mkdir ~/sd410
$ cd ~/sd410
$ mkdir Debian
$ cd Debian
$ mkdir Linaro-4.14.0
$ cd Linaro-4.14.0
</pre>

= Download kernel source =
Download kernel source from git repository
<pre>
$ git clone https://github.com/varigit/DART-SD410-kernel.git kernel
$ cd kernel
$ git checkout -b kernel-19.01 remotes/origin/release/kernel-19.01
</pre>

= Download Linaro folder from FTP site =
Download the whole Linaro-19.01 folder located in /dart-sd410/Software/Debian on Variscite FTP into ~/sd410/Debian/Linaro-4.14.0 directory
The following files will be downloaded.
<pre>
sd410
└── Debian
    └── Linaro-19.01
        ├── kernel
        │   └── build.sh
        ├── ramdisk
        │   └── initrd.img
        ├── RescueImages
        │   ├── boot-sd410-lvds.img
        │   ├── boot-sd410-hdmi.img
        │   ├── dart-sd410_8016.bin
        │   ├── emmc_appsboot.mbn
        │   ├── flashall.bat
        │   ├── gpt_both0.bin
        │   ├── hyp.mbn
        │   ├── LICENSE
        │   ├── variscite-buster-developer-dart-sd410-491.tar.gz
        │   ├── variscite-buster-alip-dart-sd410-491.tar.gz
        │   ├── NON-HLOS.bin
        │   ├── rpm.mbn
        │   ├── sbl1.mbn
        │   └── tz.mbn
        ├── skales
        └── makebootimg.sh

</pre>
Extract the rootfs files by:
<pre>
$ tar -xvf variscite-buster-developer-dart-sd410-491.tar.gz
$ tar -xvf variscite-buster-alip-dart-sd410-491.tar.gz
</pre>

The file build.sh will be placed in the git kernel directory

{{note| NOTE:<br>
Please refer to support@variscite.com for obtaining FTP credentials.|info}}

= Download GCC from FTP site =
Download GCC compiler archive from /Software/Debian directory into ~/sd410/Debian directory of your PC.<br>Extract the GCC compiler by:
<pre>
$ tar -xvf gcc-linaro-6.3.1-2017.02-x86_64_aarch64-linux-gnu.tar.xz
</pre>

= Boot Image Build =
Variscite suggests using the downloaded script for building the boot images.
If something goes wrong then try the manual build.
== Automatic creation of the boot image first time ==
Build kernel source using supplied script file:
<pre>
$ ./makebootimg.sh full
</pre>
The kernel sources will be built and the output boot image file will be created in the ~/sd410/Debial/Linaro-4.14.0/ directory

If the kernel configuration was not changed the next builds can be speed up by using the command:
<pre>
$ ./makebootimg.sh
</pre>

== Manual kernel build ==
Export Envornment variables for compiler and architecture
<pre>
$ export CROSS_COMPILE=~/sd410/debian/gcc-linaro-6.3.1-2017.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
$ export ARCH=arm64
</pre>
Select the needed defconfig file for kernel:
<pre>
$ make defconfig distro.config var-sd410.config
</pre>
Build the kernel and modules
<pre>
$ make KERNELRELEASE=4.14.0-linaro-lt-qcom Image dtbs  -j8
$ make KERNELRELEASE=4.14.0-linaro-lt-qcom modules  -j8
$ make KERNELRELEASE=4.14.0-linaro-lt-qcom INSTALL_MOD_PATH=build-${ARCH}-modules modules_install -j8
</pre>
Combine dtb files with kernel image
<pre>
$ cat arch/arm64/boot/Image.gz arch/arm64/boot/dts/qcom/apq8016-var-dart-hdmi.dtb > arch/arm64/boot/Image.gz_hdmi_dtb
$ cat arch/arm64/boot/Image.gz arch/arm64/boot/dts/qcom/apq8016-var-dart-lvds.dtb > arch/arm64/boot/Image.gz_lvds_dtb
</pre>

== Manual boot image creation ==
You will need a default ramdisk for boot image creation.<br>
It is located in the ramdisk directory of the downloaded folder.<br>

Compress all the dtb files and the kernel image file into one dt.img file by:
<pre>
$ ./mkbootimg --kernel kernel/arch/arm64/boot/Image.gz_hdmi_dtb\
              --ramdisk ramdisk/initrd.img \
              --output boot-sd410-hdmi.img \
              --pagesize 2048 \
              --base 0x80000000 \
              --cmdline "root=/dev/disk/by-partlabel/rootfs rw rootwait console=ttyMSM0,115200n8"

$ ./mkbootimg --kernel kernel/arch/arm64/boot/Image.gz_lvds_dtb\
              --ramdisk ramdisk/initrd.img \
              --output boot-sd410-lvds.img \
              --pagesize 2048 \
              --base 0x80000000 \
              --cmdline "root=/dev/disk/by-partlabel/rootfs rw rootwait console=ttyMSM0,115200n8"
</pre>
	      
The files named boot-sd410-hdmi.img and boot-sd410-lvds.img are created. One of them should be burned into the board using fastboot.
Remove unneeded dt.img file:
<pre>
$ rm kernel/arch/arm64/boot/Image.gz_hdmi_dtb
$ rm kernel/arch/arm64/boot/Image.gz_lvds_dtb
</pre>

= Flash new image to the board =
Cycle power of the VAR-SD410CustomBoard with Back button pressed. it will enter fastboot.
run the following commend to update the boot image:
<pre>
$ sudo fastboot flash boot boot-sd410-lvds.img
$ sudo fastboot reboot
</pre>
The board will update the system and reboot with the updated kernel