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[Guide][Video Tutorial] Intermediate to Advanced Custom Rom and Kernel Building

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Hey everyone! There is also a telegram channel where you can drop in for some help: https://t.me/joinchat/HR_8JgyDBdw_DvmndPl0kg

I really hope that you have enjoyed the series, and that it is helpful to you in your Android career!

Praise God! Another video series featuring more advanced material!
Previously, I had created a video tutorial and guide for how to compile Android, from Lollipop through Marshmallow, Nougat, and Oreo. If you need help learning the basics or intermediate material, please see my other video tutorial thread on XDA: https://forum.xda-developers.com/and...ernel-t3814251

Who is this video series for?
Well, this video tutorial is a guide built primarily for the intermediate Android developer. This is written for those who already know how to compile custom roms for a phone that they own using device trees and vendor files that are already available. Things like using git, GitHub, GitLab, ADB, fastboot, and repo sync should already be something familiar to them.

That said, I believe that an intermediate developer will find this set of videos to be most helpful. The goal of this video series is to push the intermediate developer up to a rudimentary advanced level.

Advanced developer?
An advanced rom/kernel developer will probably far exceed my feeble abilities, and will not likely find much useful information here. Perhaps if you are an advanced developer, you would consider making another tutorial or adding to this advanced video series! (See further posts for recommendations on contributing videos.) Please! I'd really like to add links to your youtube channel, or your git repository full of advanced topics for developers! Help up the quality of devices and builds of Android by showing others what you know how to do best!

Why did you put this together?
Well, after releasing the previous tutorial, explaining to beginners how to use things like git, repo sync, compile roms, and do small kernel modification, it was brought to my attention that a more advanced course was needed for intermediate users who already know how to build roms, but may (like myself) struggle with more complicated tasks. I don't know how to do everything, and we all have to take the next step sometime, so why not take that next step together?

Why a separate thread?
I'd like to separate the more advanced questions from the more basic questions that may be asked in the other thread.

What's in the videos?
During the series, we will be attempting several more advanced tasks. At present, there is not a lot in the series, but below are some of the highlights from what is available.

**** This is an UNOFFICIAL TUTORIAL. Use at your own risk! ****
Now including more than 5 hours of video!

Section A: Building a device tree from scratch:

+ Research
+ Finding similar devices
+ Pulling vendor files
+ Setting up a device tree
+ Getting block device information
+ Pulling kernel information
+ Breaking down boot images
+ Build errors
+ Target Assets
+ Tombstones AND MORE!

Download links: The video quality is now HD!
MP4 Video GitLab:
https://gitlab.com/alaskalinuxuser/a...oper_guide_mp4
Clicking on a video in GitLab will allow you to watch it online.

MP4 Video Downloads:
https://gitlab.com/alaskalinuxuser/a...mp4-master.zip
This download is rather large due to the multiple videos.

Youtube links: The Youtube quality is now HD!
https://www.youtube.com/watch?v=5c66...uVz5YC2OPfQVVp


Section B: Upgrading a device from Marshmallow to Nougat: (Work in progress)

+ Research
+ Finding similar devices
+ Comparing changes
+ Editing a device tree
+ Build errors
+ AND MORE!

Download links: The video quality is now HD!
MP4 Video GitLab:
https://gitlab.com/alaskalinuxuser/H...rade_MN_Videos
Clicking on a video in GitLab will allow you to watch it online.

MP4 Video Downloads:
https://gitlab.com/alaskalinuxuser/H...eos-master.zip
This download is rather large due to the multiple videos.

Youtube links: The Youtube quality is now HD!
https://www.youtube.com/playlist?lis...OBO1oFJVFFK-fk


Section C: Creating your very own custom rom! (Work in progress)

+ Research
+ Forking a base rom
+ Adding to the manifest
+ Editing which apps are built
+ Editing settings/files/display
+ AND MORE!

Download links: The video quality is now HD!
MP4 Video GitLab:
https://gitlab.com/alaskalinuxuser/h...ganewcustomrom
Clicking on a video in GitLab will allow you to watch it online.

MP4 Video Downloads:
https://gitlab.com/alaskalinuxuser/h...rom-master.zip
This download is rather large due to the multiple videos.

Youtube links: The Youtube quality is now HD!
https://www.youtube.com/playlist?lis...7HL9KuN__GDexh


My Wordpress: https://thealaskalinuxuser.wordpress.com
My Website: https://thealaskalinuxuser.com
My device and kernel trees (older - GitHub) : https://github.com/alaskalinuxuser/
My device and kernel trees (newer - GitLab) : https://gitlab.com/alaskalinuxuser/

Created 2018-08-01
Last Updated 2018-09-28
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This project is licensed under the Creative Commons Attribution 4.0.
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I'm big into sharing! That means that this video tutorial is open source! Here's the official license if you need it:

Code:
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1st August 2018, 10:35 PM |#3  
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Notes:

Have questions about building roms or kernels?

While I would absolutely love to help everybody, I have 3 kids under 5 years old, a job, and all of those time taking life events that come with a family and work. You are welcome to post questions here, but I can't promise that I'll have time or be able to answer all of them, But I'll do my best. But perhaps other users will be able to assist you as well. If you have a specific question, and don't hear back from me, you may want to start a thread in the Q&A section of the forums. Remember to be as detailed as possible, and include logs!

I really want to help you get started building. That said, I am not able to answer every question that possibly exists. I just am not that smart.
However, this is a great place to ask questions! Another great place to ask questions is in the Q&A section for your device, if it is device specific.

But I do have one request: Please don't PM me your questions. Please post your questions here instead, so I can answer one question for the group, rather than one on one questions. I want to help, but I don't have time to answer the volume of questions I am getting in my PM box. Please post you questions here in the thread.
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6th August 2018, 04:22 PM |#4  
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Thanks a lot
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6th August 2018, 09:56 PM |#5  
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Quote:
Originally Posted by OfficialNLS

Thanks a lot

You are welcome! By the way, more videos coming soon! The device booted up!
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7th August 2018, 07:07 PM |#6  
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Just uploaded a few more videos. Now there is over 5 hours of video for building a device tree from scratch, and it even boots up completely! YouTube and the MP4 repository are up to date, the Ogg Vorbis videos are uploading now!
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8th August 2018, 12:14 PM |#7  
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Quote:
Originally Posted by AlaskaLinuxUser

Just uploaded a few more videos. Now there is over 5 hours of video for building a device tree from scratch, and it even boots up completely! YouTube and the MP4 repository are up to date, the Ogg Vorbis videos are uploading now!

Thanks a lot sir
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15th August 2018, 04:24 AM |#8  
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Running `./unpack-bootimg.pl ./boot.img` says "Found a secondary file after the ramdisk image. According to the spec (mkbootimg.h) this file can exist, but this script is not designed to deal with this scenario."
How do I fix this? I have extracted the boot.img from watching the video and tried SuperR's Kitchen [Donated] and just extracted from the ROM. Please help!
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15th August 2018, 04:26 AM |#9  
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thanks
Your topic is very great and useful for us…thank you
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15th August 2018, 05:16 PM |#10  
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Editing BoardConfig.mk
Hi, I followed your video steps and used tool unmkbootimg, but I found out my kernel base is larger than the kernel address. In this case what can my kernel offset be? Do I still put these values in?

unmkbootimg version 1.2 - Mikael Q Kuisma <[email protected]>
Kernel size 9018600
Kernel address 0x80008000
Ramdisk size 1771148
Ramdisk address 0x82000000
Secondary size 0
Secondary address 0x80f00000
Kernel tags address 0x81e00000
Flash page size 2048
Board name is ""
Command line "console=null androidboot.hardware=qcom user_debug=23 msm_rtb.filter=0x3F ehci-hcd.park=3 androidboot.bootdevice=7824900.sdhci"

*** WARNING ****
This image is built using NON-standard mkbootimg!
OFF_KERNEL_ADDR is 0xFE208100
OFF_RAMDISK_ADDR is 0x00200100
OFF_SECOND_ADDR is 0xFF100100
Please modify mkbootimg.c using the above values to build your image.
****************

Extracting kernel to file zImage ...
Extracting root filesystem to file initramfs.cpio.gz ...
All done.
---------------
To recompile this image, use:
mkbootimg --kernel zImage --ramdisk initramfs.cpio.gz --base 0x81dfff00 --cmdline 'console=null androidboot.hardware=qcom user_debug=23 msm_rtb.filter=0x3F ehci-hcd.park=3 androidboot.bootdevice=7824900.sdhci' -o new_boot.img
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16th August 2018, 12:48 PM |#11  
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Oh just what I was looking for. My phone's manufacturer warranty will run out in a couple of months. Will give me enough time to look up stuff till then.
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