[KERNEL][SINGLE/DUAL BOOT][JB/KK][STOCK/CM]blackhawk's NEXT kernel 2.4

ketut.kumajaya · May 19, 2013

NEXT 2.1.8 placeholder: http://xdaforums.com/showpost.php?p=51678768&postcount=2513

STOP! This kernel supports ONLY Samsung Jelly Bean 4.1.x, 4.2.2, CM 10.1.x, 10.2, and 11.0. It won't work on ICS, CM 9, CM 10.

FOR NOW I FORBID ANYONE ELSE REUSE THIS STILL IN DEVELOPMENT DUAL BOOT PROJECT FOR HIS/HER OWN GALAXY TAB 2 PROJECT!

STOP PRESS:
NEXT 2.x separated in two package: the kernel part as blackhawk-next-kernel-2.x-p31xx.zip and the proprietary binaries part as proprietary-vendor-samsung.zip for JB >= 4.2 and proprietary-vendor-samsung-4.1.x.zip for JB 4.1.x .

Flash the kernel part first and then directly the proprietary binaries part! Flash the appropriate proprietary part on both 1st and 2nd ROM!

Sources:
Kernel sources at http://github.com/kumajaya/android_kernel_samsung_espresso10/tree/cm-10.2-update

Features:

Samsung stock 4.1.x, 4.2.2 (since 1.8), CM 10.1.x and CM 10.2 (since 1.7) support with a single kernel image
For stock ROM: external SD card - internal media swapper script included
Samsung proprietary exFAT modules are loaded. CM 10.1 exFAT support files attached at post #2
For CM/CM based ROM: auto rotate screen default orientation depend on ro.sf.hwrotation value, camera orientation fix included
Dual-booting. You can have Samsung JB and CM 10.1 ROMs on a single device at the same time.
Nice looking AROMA based boot menu
Using CyanogenMod kernel source, updated to p3110 source for newer WLAN (Youtube HD bugfix on stock ROM), modem, sensors driver, and etc for both P31xx and P51xx target
CPU clock: 300MHz, 600MHz, 800MHz, 1.008GHz, 1.2GHz, 1.35GHz, 1.42GHz, 1.48GHz, and 1.52GHz, locked @ 1.008GHz on boot
GPU clock: 153.6MHz, 307.2MHz, 384MHz, and 512MHz, 307.2MHz as the default maximum clock
CPU voltage control. You can use Android Tuner/System Tuner/Trickster MOD to set CPU voltage
The ramdisk base on JB 4.1.2 (stock ROM) and JB 4.2.2 (CM 10.1)
Using newer PowerVR SGX 540 kernel modules and binaries blob
row, bfq, sio, and vr scheduler support
Governor bug fix. Replace Samsung's interactive governor with default OMAP4 3.0.31 interactive governor from omapzoom.org, plus pegasusq and lulzactive
NFS and CIFS/samba (not loaded by default) filesystem support
LZMA compressed initrd, to keep boot image smaller than 8MB
swap support. zram and cleancache with a working zcache driver, enabled by default
~~kernel config, insmod configs.ko and then you can access /proc/config.gz~~
external modem support, for PPP Widget (not loaded by default, P31xx need powered USB hub for external modem)
Some tweaks from gokhanmoral's siyahkernel for S3, passive entropy tweak applied
Remove a lot of debug message from touchscreen driver, display, mmc, modem, etc
linaro arm-linux-gnueabihf- cross compiler, compiler optimization applied
SuperSU v1.41 for stock ROM
Self compiled BusyBox v1.22.0-git in /sbin, config file based on CM's BusyBox bbconfig output. fstrim applet patch applied, android_reboot applet added (a quick but clean port from Android toolbox), swapon applet with priority option. For stock ROM: this version of Busybox will overwrite busybox binary in /system/bin or /system/xbin and save it as busybox.backup
Early boot scripts support (/system/etc/init.d, /data/local/userinit.sh, and /data/local/userinit.d)
Post boot script support (/system/etc/init.post_boot.sh)
For stock ROM: custom boot animation support (/data/local/bootanimation.zip or /system/media/bootanimation.zip if exists, Samsung boot animation as a fallback). If a bootanimation.zip found, the boot sound will be turned off as well as the shutdown animation.
Modified mount options
adb insecure, adb mode in charge state also insecure
Advanced TCP congestion support, westwood as the default congestion
No /system/etc/hosts patch, you can install AdAway from F-Droid

Known Problems:

Thanks To:

gokhanmoral, amarullz, Phil3759, Chainfire, cmenard, codeworkx, imoseyon, coolbho3k, Faux123, AuxLV, CodyF86, poppolo2001
This part will be expanded. Most of the patches I applied are coded by someone else. Please remind me if I forget to give credits to anybody...

Downloads:

PhilZ Touch 5.08.5: http://xdaforums.com/showthread.php?t=2202667

Todo:

More features in NEXT tool

Special Thanks:

@trssho91, @Caldair, @fast96, @Jellydroidkin, @Android-Andi, @nakbaliNe, @Bhaskara Rao, @tsatomas

Downloads Record:

blackhawk-next-kernel-1.0-p31xx.zip: 316
blackhawk-next-kernel-1.1-p31xx.zip: 87
blackhawk-next-kernel-1.1-addon-nooc-p31xx.zip: 41
blackhawk-next-kernel-1.2-p31xx.zip: 503
blackhawk-next-kernel-1.2-addon-nooc-p31xx.zip: 160
blackhawk-next-kernel-1.3-p31xx.zip: 240
blackhawk-next-kernel-1.3-addon-nooc-p31xx.zip: 112
blackhawk-next-kernel-1.4-p31xx.zip: 583
blackhawk-next-kernel-1.4-nooc-p31xx.zip: 294
blackhawk-next-kernel-1.6-p31xx.zip: 380
blackhawk-next-kernel-1.6-nooc-p31xx.zip: 227
blackhawk-next-kernel-1.6.1-p31xx.zip: 180
blackhawk-next-kernel-1.6.1-nooc-p31xx.zip: 90
blackhawk-next-kernel-1.6.2-p31xx.zip: 151
blackhawk-next-kernel-1.6.2-nooc-p31xx.zip: 81
blackhawk-next-kernel-1.5-p31xx.zip: 600
blackhawk-next-kernel-1.5-nooc-p31xx.zip: 304
blackhawk-next-kernel-1.8.1-p31xx.zip: 222
blackhawk-next-kernel-1.8.1-nooc-p31xx.zip: 99
blackhawk-next-kernel-1.8.2-p31xx.zip: 577
blackhawk-next-kernel-1.8.2-nooc-p31xx.zip 321

XDA:DevDB Information
[KERNEL][SINGLE/DUAL][JB/KK][STOCK/CM]blackhawk's NEXT kernel, Kernel for the Samsung Galaxy Tab 2

Contributors
ketut.kumajaya, Android-Andi
Kernel Special Features: Dual boot stock and AOSP based ROM

Version Information
Status: Stable
Current Stable Version: 2.3

Created 2014-09-21
Last Updated 2014-10-11

ketut.kumajaya · May 19, 2013

NEXT 2.x separated in two package: the kernel part as blackhawk-next-kernel-2.x-p31xx.zip and the proprietary binaries part as proprietary-vendor-samsung.zip for JB >= 4.2 and proprietary-vendor-samsung-4.1.x.zip for JB 4.1.x .

Changelog:
21/04/2014 2.2:

Flash-Friendly File System (f2fs) support
Full github commits 8/4 - 20/4/2014: https://github.com/kumajaya/android_kernel_samsung_espresso10/commits/cm-11.0
Update proprietary blobs, proprietary-vendor-samsung-update.zip

02/01/2014 2.1.5 -> 2.1.6:

CM 11.0 support

28/10/2013 2.1.4 -> 2.1.5:

Updated to upstream 3.0.101 kernel
Audit and SELinux enabled
Smartreflex completely disabled
GPU frequencies not exposed to STweaks bug fixed
Do not load exFAT modules on CM 10.2
Full changelog: https://github.com/kumajaya/android_kernel_samsung_espresso10/commits/cm-10.2-update

27/10/2013 2.1.3 -> 2.1.4:

Ramdisk updated to sync with latest CM 10.2

20/10/2013 2.1.2 -> 2.1.3:

Update init script for PAC
Disable almost all kernel debugging support except KALLSYMS. Kernel failed to boot with CONFIG_KALLSYMS disabled

28/09/2013 2.1.1 -> 2.1.2:

Turn all CPUs online when governor gets changed, hotplug bug workaround
SIO and VR I/O scheduler
Initial STweaks support, big thanks @gokhanmoral. Download STweaks app from Play store to access almost all NEXT related settings (CPU governor, frequency, and voltages; GPU governor and frequency limit; surfaceflinger rotation; I/O scheduler; logger; CIFS, Xbox controller, and USB modem support; and dual boot related settings).

22/09/2013 2.1 -> 2.1.1:

Update overclock codes, remove gpu_oc interface: https://github.com/kumajaya/android...mmit/94ac45a10213de400c7bf3c01b5c5b052ae8ba18
sgxfreq: add sysfs interface to store frequency limit: https://github.com/kumajaya/android...mmit/738061b30d2278d3b51b341bc2597dad300f4e47
sgxfreq: limit frequency to default on boot: https://github.com/kumajaya/android...mmit/8a6933cf6565b5587db6a2a5ce7b1207807ab701
The latest Android Tuner app needed to control the modified OMAP GPU control interface but the dirty way by editing /etc/init.post_boot.sh always available

18/09/2013 2.0 -> 2.1:

Separated vendor blobs for JB 4.1.x and JB >= 4.2, @poppolo2001 fix applied
With CPU and GPU overclock, CPU under/over voltage, upstream kernel 3.0.96 by @CodyF86
Complete changelog: https://github.com/kumajaya/android_kernel_samsung_espresso10/commits/cm-10.2-update

02/09/2013 1.8.3 -> 2.0:

Vendor blobs in separated flashable zip, taken from Samsung 4.2.2. Flash proprietary-vendor-samsung.zip directry after flashing NEXT kernel 2.0 on both 1st and 2nd ROM!
Ten seconds boot menu timeout. Boot to the latest booted ROM when timeout periode reached. Finally, my trick works :victory:
Using Samsung P3110 Update1 kernel source: http://opensource.samsung.com/reception/receptionSub.do?method=sub&sub=F&searchValue=p3110 . Patched to comply CM/AOSP need and NEXT dual boot, without SELinux and audit support, gcc linaro compiler. Kernel source: https://github.com/kumajaya/android_kernel_samsung_espresso10/tree/cm-10.2
Samsung open source exFAT kernel modules included, source: http://opensource.samsung.com/reception/receptionSub.do?method=sub&sub=F&searchValue=exfat
Without CPU or GPU overclock
Without extended CPU governor or I/O scheduler
Without swap or zram support
AROMA 2.70 beta 6 binary

13/08/2013 1.8.2 -> 1.8.3:

Samsung 4.2.2: The first attemp to reduce battery draining issue, zram service disabled! You can enable zram (not as a service) by issuing "setprop persist.service.zram 25" over Terminal Emulator or "adb shell". Reboot is required.
CM 10.2: Bluetooth tethering fix from upstream CM 10.2

07/08/2013 1.8.1 -> 1.8.2:

The third attemp to support Samsung 4.2.2 for all device configuration
Vendor blobs in separate flashable zip updated, please re-download it!

06/08/2013 1.8 -> 1.8.1:

The second attemp to support Samsung 4.2.2 for all device configuration
Vendor blobs in separate flashable zip. For all ROMs, on both 1st and 2nd ROM: Flash vendor-blobs-new-ducati-blackhawk.zip directry after flashing NEXT kernel!
Single channel sound output bug fix

05/08/2013 1.7 -> 1.8:

Initial Samsung 4.2.2 support
Updated to upstream Linux kernel 3.0.41 (incremental patch)
https://github.com/kumajaya/android_kernel_samsung_espresso10/commits/cm-10.1-blackhawk 1-2 Aug 2013
The first kernel utilizing the new ducati firmware, the first kernel preserved 815.8MB RAM! Don't forget to flash vendor-blobs-old-ducati-blackhawk-p31xx.zip if you switch to another kernel

01/08/2013 1.6.3 -> 1.7:

Initial CM 10.2 support. Do not flash blackhawk-next-cm-exfat-vold.zip! CM 10.2 already has an open source/reverse engineered exFAT filesystem support
zram switched to zsmalloc, zram optimized for Android disabled
XBox 360 USB controller with BigX LED support enabled (by @iks8 request). Modules not loaded by default, edit /system/etc/init.d/02modules to activate it.

23/07/2013 1.6.2 -> 1.6.3:

Add android_reboot applet to NEXT's busybox (a quick port from Android toolbox) to fix AROMA boot menu fail to boot into recovery/bootloader as reported by @kinung
I hate bug!

22/07/2013 1.6.1 -> 1.6.2:

Hotplug CPU governor working properly with cleancache enabled, zcache memory corruption problem fixed!

21/07/2013 1.6 -> 1.6.1:

Hotplug CPU governor kernel panic bug fix. This governor not working properly with cleancache enabled, cleancache disabled for now
Static linked busybox compiled from source, fstrim patch applied. Busybox config based on CM's busybox bbconfig output. Total 46 more than previous busybox applet, add priority option to swapon applet
zRAM swap per CPU core, same priority value. CM's /system/bin/compcache script updated to handle 2 zRAM devices. Reference: http://wiki.gentoo.org/wiki/Zram
Stock ROM persist.customboot.zram property changed to persist.service.zram, follow CM's standard
Stock ROM default zRAM size changed to 26% RAM size
Swappiness value changed to 90

18/07/2013 1.5 -> 1.6:

LZO compression updated to current upstream version, optimized for arm. Reference: http://git.kernel.org/cgit/linux/ke.../?id=b0af9cd9aab60ceb17d3ebabb9fdf4ff0a99cf50
zRam support optimized for Android, utilizing the new lzo library. Set 18% of RAM as zRam swap file. CM user can use CM's Settings - Performance options.
cleancache support with working Zcache driver, utilizing the new lzo library
entropy threshold tweaks, /dev/random linked to /dev/urandom
github 14-18/07/2013 commits: https://github.com/kumajaya/android_kernel_samsung_espresso10/commits/cm-10.1-blackhawk

11/07/2013 1.4.1 -> 1.5:

Decrease CPU voltage for frequencies below 1.2GHz, increase CPU voltage for frequencies above 1.2GHz
Re-enable MMC_CAP_ERASE for I/O speed improvement, run "fstrim -v /data" and "fstrim -v /cache" manually to TRIM your filesystem or run LagFix (fstrim GUI, download it from Play)
Remove my old hack in cpufreq driver
Newer PowerVR SGX540 3D kernel module and vendor binaries, in sync to CM-10.1. For dual boot user, you must update both 1st and 2nd ROM to renew both ROM vendor binaries!
Change screen_off_max_freq from 1.008GHz to 800MHz, small changes in init scripts
SuperSU v1.41

16/06/2013 1.4 -> 1.4.1:

I/O speed improvement, 1.3 and 1.4 bugfix
SuperSU v1.34 - thanks Chainfire
nooc: Smartreflex class 3 re-enabled, voltage control disabled
small update to disable swap support by default for my "stock based ROM" included

04/06/2013 1.3 -> 1.4:

Selected kernel modules, scripts, and binaries integrated in boot.img, single flash for 1st and 2nd ROM
Kernel compression back to gzip, boot.img compression switched to lzma for better compression (I need more space)
Auto root (for stock)
Auto busybox (for stock)
Auto rotate (for both stock and CM) depend on ro.sf.hwrotation value, camera orientation fix included
External sdcard and internal media swapper script integrated in boot.img (for stock as 1st ROM)
Override init.d CPU governor setting on boot completed (technical reason/by design). Please use an app "on boot" or /etc/init.post_boot.sh to set CPU governor
init script reworked (again), simplified
Standalone nooc version, no longer as an addon for standard NEXT
Untested CRT off animation support

01/06/2013 1.2 -> 1.3:

Updated compiler to the latest linaro gcc 4.7
Better data integrity on both 1st and 2nd ROM
Ramdisk init scripts reworked, inline with the latest Samsung (Taiwan BRI 04/2013) and CM (29/05/2013 nightly)
Inline with P51xx port
Updated exFAT modules (don't know it's better or worse, it's closed source)
Default CPU clock still 1.008GHz, default GPU clock 307.2MHz

1.1 -> 1.2:

Potential bug in sdcard swapper script fixed. Yes, for stock ROM as 1st ROM this kernel still has a script to swap external sdcard - internal media.
SuperSU updated to the latest version (stock ROM).

1.0 -> 1.1:

exFAT filesystem support, stock ROM only for now. I will share separate flashable zip for CM 10.1, when it's ready (broken USB storage support). Please note Dual Boot FAQs #24!
CGROUPS, SLUB, and TRACING support back enabled for exFAT compatibility, Android logger disabled by default to compesated it. You can enable logger by editing /system/etc/init.d/02modules .
No boot menu in single ROM environment.
Change stock ROM init.d script starting point. Earlier than before, same as CM 10.1 now.
Non overclock addon for anyone who is experiencing overheats when using standard NEXT kernel.
Source change: https://github.com/kumajaya/android_kernel_samsung_espresso10/commits/cm-10.1-blackhawk, May 24-26, 2013. A lot of undocumented change in ramdisk side.

exFAT support in CM 10.1

Download and flash blackhawk-next-cm-exfat-vold.zip over recovery
fsck.exfat, mkfs.exfat, vold binaries and all needed libraries taken from Samsung JB 4.2.2 included
USB storage support is broken, you need USB OTG Helper from http://xdaforums.com/showthread.php?t=1588940 as 3rd party USB storage mounter
exfat binaries for exfat support in USB OTG Helper included. So, all USB OTG Helper features (FAT, Ext2/3/4, full NTFS, and exFAT support) enabled
To avoid Dual Boot FAQs #24 issue, flash blackhawk-next-cm-exfat-vold.zip and NEXT kernel of course directly after CM update. For CM 10.1 only!

Download Record:

proprietary-vendor-samsung.zip: 4481
proprietary-vendor-samsung-4.1.x.zip: 1478

ketut.kumajaya · May 19, 2013

Dual Boot FAQs

Dual Boot FAQs

Adapted from droidphile's "Dual Boot FAQs" with permission.

1. "Why would I wanna dual-boot?"
A. You don't have to.
Suppose you're more of an aosp rom fan. But misses the HDMI out, bluetooth hands-free and love sammy camera more. Do a minimal installation of sammy rom and boot into it when in need of these features and use aosp rom otherwise.
Or you are a sammy rom fan but love the responsiveness and pure android feel of aosp roms.
And while you can dual boot two sammy or two aosp roms, it doesn't make any sense.

2. "What if I don't need dual booting?"
A. No issues. Kernel won't force to setup 2 roms. You can single boot as before.

3. "Will dual booting change my bootloader or do any dangerous stuff like setting my phone on fire?"
A. NO. Changes are at kernel and ramfs level only. Some space in your internal sd card is used, and also the unused hidden partition mmcblk0p11 is used to store cache of second rom. Dual booting doesn't repartition the filesystem or perform anything scary.

4. "I want to setup dual booting."
A. There are four situations:-
1) Sammy rom now. Want to use aosp as secondary.
2) Sammy rom now. Want to use aosp as primary.
3) Aosp rom now. Want to use sammy as secondary.
4) Aosp rom now. Want to use sammy as primary.

Prerequisites for any setup is
a) Flash latest blackhawk's NEXT kernel
b) Flash new ducati vendor blobs (since 1.8.x)
c) Flash latest PhilZ Touch - blackhawk repack version - recovery
d) Atleast 90% battery left.
e) 2 GB free on internal SD.
f) Some spare time

1) Present sammy, setup aosp as secondary:-
i) Reboot into recovery
ii) Flash blackhawk's NEXT tool, create system.img for CM/CM based ROM and then close it
iii) Reboot into secondary recovery
iv) Flash aosp ROM as 2nd ROM
v) Flash blackhawk's NEXT kernel again
vi) Flash new ducati vendor blobs again (since 1.8.x)

2) Present sammy, setup aosp as primary:-
i) Reboot into recovery
ii) Nandroid backup your current sammy ROM
iii) Flash blackhawk's NEXT tool, create system.img for Samsung stock/stock based ROM and then close it
iv) Reboot into secondary recovery
v) Nandroid restore your sammy ROM as 2nd ROM
vi) Flash blackhawk's NEXT kernel again
vii) Flash new ducati vendor blobs again (since 1.8.x)
viii) Reboot into primary recovery
ix) Flash aosp ROM as 1st ROM
x) Flash blackhawk's NEXT kernel again
xi) Flash new ducati vendor blobs again (since 1.8.x)

3) Present aosp, setup sammy as secondary:-
Same as (1), instead of flashing aosp to second, flash sammy to second.

4) Present aosp, setup sammy as primary:-
Same as (2), instead of flashing aosp to first ROM, flash sammy.

NOTE:
-To dual boot Two Aosp or Two Sammy roms, just follow (1) or (2) (depending on which one of them you want as primary/secondary), just flash Sammy instead of aosp or aosp instead of sammy.

5. "What things should I be taking care off while dealing with dual booting?"
A. - Make sure where you are: in primary or secondary recovery.

6. "How to boot into primary rom?"
A. AROMA based boot menu will help you on every boot.

7. "How to boot into secondary rom?"
A. AROMA based boot menu will help you on every boot.

8. "Is kernel partition shared?"
A. Yes. Same kernel boots both roms.

9. "If I flash another kernel (that doesn't support db) do I lose dual booting?"
A. Yes

10. "I lost dualbooting after flashing another kernel. I didn't do anything to second rom files in sdcard/.secondrom. How can I get db back?"
A. Just flash the latest blackhawk's NEXT kernel, flash new ducati vendor blobs again (since 1.8.x)

11. "Will there be any performance degradation on the rom used as secondary compared to primary?"
A. NO

12. "Will my phone run slow overall because of db?"
A. NO

13. "How to flash a newer version of 1st rom?"
A. As usual, just flash it from primary recovery. Flash blackhawk's NEXT kernel again, flash new ducati vendor blobs again (since 1.8.x)

14. "How to flash newer version of 2nd rom?"
A. Just flash it from secondary recovery. Flash blackhawk's NEXT kernel again, flash new ducati vendor blobs again (since 1.8.x)

15. "Would upgrading 1st or second rom cause other rom to fail on boot?"
A. No. Partitions of other rom are not touched during upgrading.

16. "I miss the recovery I used before, so much.."
A. PhilZ Touch not bad at all.

17. "User apps of 1st rom are automatically available for second rom?"
A. NO. However, if you had backed them up using Titanium Backup or similar apps, just restore apps while on second rom.

18. "I wanna keep separate backup for apps in both the Roms, since I use one Rom for say entertainment and other productivity."
A. Setup different backup directory in Titanium Backup in 1st and 2nd rom.

19. "I don't see STweaks app in second rom."
A. This is blackhawk's NEXT dual boot solution for Galaxy Tab 2, a free implementation of gokhanmoral's Siyah dual boot.

20. "Do I need to anything special before flashing a newer blackhawk's NEXT kernel?"
A. NO. ~~Just flash kernel in primary and secondary recovery. Yes, on both 1st and 2nd ROM.~~ Just flash kernel in recovery - whichever you used to do. Kernel image is copied to the unified kernel partition (since 1.4 version). Flash new ducati vendor blobs (since 1.8.x) on both ROM may be required to ensure vendor blobs match to the kernel

21. "How can I run same STweaks settings of 1st Rom in 2nd Rom?"
A. This is blackhawk's NEXT dual boot solution for Galaxy Tab 2, a free implementation of gokhanmoral's Siyah dual boot.

22. "How do I remove everything related to DB and run single boot again?"
A. In primary recovery, flash blackhawk's NEXT tool and delete 2nd ROM system image. OR delete .secondrom directory in /data/media while on 1st Rom.

23. "If secondrom files are kept in /data/media, will wiping data in recovery erase second rom files?"
A. NO. /data/media is skipped in CWM recovery.

24. "I was using ExFat card on sammy rom without any issues. I have setup dual boot with aosp and now after booting into CM it says microSD card is corrupted."
A. Aosp roms doesn't support ExFat out of the box. The data was corrupted by aosp vold. Even if you boot back to Sammy rom, it still would be corrupted. To recover data, manually mount the card in recovery, copy contents to internal SD and reformat card to a Fat32.
Also try
chkdsk X: /f (where X is the drive letter of microsd), you may be able to copy data.

25. "I read somewhere that both rom data partition use the same space. Doesn't that mean my apps are shared across roms?"
A. NO. It just means they uses same partition. They're still different directories.
1st rom data = /data
2nd rom data = /data/media/.secondrom/data

26. "Will hitting "Boot into Secondary Recovery" in recovery boot menu change my recovery?"
A. NO. It just runs (not flash) an alternate recovery so that you can configure dualboot settings.

27. "How do I backup 1st Rom and 2nd Rom?"
A. To backup 1st Rom, do what you did to backup rom while you were single booting a while ago.
To backup 2nd Rom, use the secondary recovery.

28. "Is there an easier way for dual-boot?"
A. Yes, send your device to me.

29. "DB architecture?"
A. Like you know, every rom has a /data, /system, /cache partition and a kernel to boot.
For primary rom, it's
mmcblk0p10 = /data
mmcblk0p9 = /system
mmcblk0p7 = /cache
And these won't change whether you're single booting or dual booting.

For secondary rom, data and system is stored in internal sd, cache in hidden partition. Note that internal sd in our device is mounted to /data/media.
We have data as a directory, System as an image in data/media/.secondrom. Cache in mmcblk0p11 which is hidden partition and not used otherwise.

- When second rom is booting, second rom data is bind mounted to mmcblk0p10 as /data/
- data/media/.secondrom/system.img partition is mounted as /system.
- mmcblk0p11 is mounted as /cache.

More FAQs will be added and the list will be updated as DB is improved.

ketut.kumajaya · May 19, 2013

Dual Boot Exercises

Exercise I

An example current facts:

ROM: Samsung stock JB 4.1.2
Kernel: blackhawk single kernel
Recovery: PhilZ Touch prior version

Prerequisites step:

Update your kernel to blackhawk's NEXT kernel
Update your recovery to the latest PhilZ Touch - blackhawk repack version - recovery
Download CM latest nightly + GApps zip
~2GB free on internal storage

Dual boot step:

Reboot into recovery
Flash blackhawk's NEXT tool, create system.img for CM/CM based ROM and then close it
Reboot into secondary recovery, make sure you choose "Secondary Recovery"! Make sure you really choose "Secondary Recovery"!!
Flash CM
Flash GApps zip
Reflash blackhawk's NEXT kernel
Reboot into secondary ROM - CyanogenMod!

It's always better if you make a backup before performing all above steps. Do it at your own risk!

Exercise II

An example current facts:

ROM: CM 10.1 latest nightly
Kernel: blackhawk single kernel
Recovery: PhilZ Touch prior version
Have Samsung stock 4.1.2 nandroid backup

Prerequisites step:

Update your kernel to blackhawk's NEXT kernel
Update your recovery to the latest PhilZ Touch - blackhawk repack version - recovery
Nandroid backup your current CM 10.1 ROM
~2GB free on internal storage. I am not sure, depend on your backup data size

CM 10.1 as 2nd ROM:

Reboot into recovery
Flash blackhawk's NEXT tool, create system.img for CM/CM based ROM and then close it
Reboot into secondary recovery, make sure you choose "Secondary Recovery"! Make sure you really choose "Secondary Recovery"!!
Restore CM 10.1 nandroid backup
Format /cache, clean dalvik-cache
Reflash blackhawk's NEXT kernel
Reboot into secondary ROM - CyanogenMod!

Samsung 4.1.2 as 1st ROM:

Reboot into primary recovery, make sure you choose "Primary Recovery"! Make sure you really choose "Primary Recovery"!!
Restore Samsung stock 4.1.2 nandroid backup
Format /cache, clean dalvik-cache
Reflash blackhawk's NEXT kernel
Reboot into primary ROM - Samsung!

Do all above steps at your own risk!

ketut.kumajaya · May 19, 2013

Just opened a new thread for my masterpiece work on Galaxy Tab 2. Enjoy it and don't forget to press my Thanks button

PhilZ Touch attached in post #1 has a "red" on screen navigation bar in secondary recovery to distinguish between primary and secondary :laugh:

08/08/2013: Kernel for stock 4.2.2 Developtment Secret

21/09/2013: OMAP PowerVR 3D GPU Control
There some interface inside /sys/devices/platform/omap/pvrsrvkm.0/sgxfreq:

frequency interface to access the current GPU frequency (153600000/307200000/384000000)
frequency_list interface to access supported GPU frequencies (153600000 307200000 384000000)
frequency_limit interface to access the GPU maximum frequency limit (default: 307200000). Writeable mean this code inside the pvrsrvkm kernel module, the GPU maximum frequency controllable
governor interface to access the current GPU governor (userspace/on3demand/activeidle/onoff)
governor_list interface to access supported GPU governor (userspace on3demand activeidle onoff)

The upcoming version of Android Tuner (0.10.2) support OMAP GPU controls.

21/09/2013: NEXT 2.0.1
As I mentioned before, I still continued cm-10.2 branch kernel development. This branch is the source code of NEXT 2.0, I've added overclock support but limited at 1.2GHz CPU and 384MHz GPU. OMAP GPU controls support applied as gpu_oc interface replacement. Kernel attached here as blackhawk-next-kernel-2.0.1-p31xx.zip .

Changelog:

Rewriting overclock code: https://github.com/kumajaya/android...mmit/35e0c0455cb7ae4beb50375c5873b328a76a1087
Add sysfs interface to store GPU frequency limit: https://github.com/kumajaya/android...mmit/738061b30d2278d3b51b341bc2597dad300f4e47
Limit GPU frequency to default on boot: https://github.com/kumajaya/android...mmit/8a6933cf6565b5587db6a2a5ce7b1207807ab701
Xpad force feedback support disabled

WARNING: This kernel only for device that can handle 1.2GHz CPU and 384MHz GPU frequency.

Fotonista · May 19, 2013

ketut.kumajaya said:
Just opened a new thread for my masterpiece work on Galaxy Tab 2. Enjoy it and don't forget to press my Thanks button

Now Im very confuse. Which one to use? Im on CM10.1 4.2.2 Lastet update.. GT P3110..which kernel should I install? what is the different between KK and Philz Touch?

dimfil · May 19, 2013

Fotonista said:
Now Im very confuse. Which one to use? Im on CM10.1 4.2.2 Lastet update.. GT P3110..which kernel should I install? what is the different between KK and Philz Touch?

There is no confusion at all...
Every file you need is in the first post: kernel, tool and Philz. Don't use anything else.
Read the examples. All information is in there...

I don't know about the differences between KK and Philz, but I don't care though... Philz is just great!

Many, many respects to ketut...
Big thanks for your efforts...

Sent from my GT-P3110 using xda app-developers app

ketut.kumajaya · May 19, 2013

Fotonista said:
Now Im very confuse. Which one to use? Im on CM10.1 4.2.2 Lastet update.. GT P3110..which kernel should I install? what is the different between KK and Philz Touch?

PhilZ Touch is a recovery image, NEXT kernel is a boot image, KK-Boot discontinued project.

Vishesh · May 19, 2013

Ketut @ awesome work with awesome guide.. U explained each n every step clearly for freshers.. N BTW do I need to update Blackhawk next kernel to 1.0..if yes, wiping cache n delvk is necessary before flashing? I am asking u cos I Dnt want to be in mess anymore.. I am happily enjoy dual boot environment.. Thanks again for all the effort..

Sent from my GT-P3100 using xda premium

ketut.kumajaya · May 19, 2013

god_creature said:
Ketut @ awesome work with awesome guide.. U explained each n every step clearly for freshers.. N BTW do I need to update Blackhawk next kernel to 1.0..if yes, wiping cache n delvk is necessary before flashing? I am asking u cos I Dnt want to be in mess anymore.. I am happily enjoy dual boot environment.. Thanks again for all the effort..

Sent from my GT-P3100 using xda premium

Yes. Fixed the problem when installed CM 10.1 directly as 2nd ROM. No wipe needed.

dimfil · May 19, 2013

Please let me ask a question here.
I have already asked in Philz's thread but no answer till now.

Can Philz restore backups made within cwm?
I already have some backups from cwm times and if Philz could restore them that would save me a lot of time. Of course I could just try and see, but that information would be usefull to have before starting in advance.

Please, ketut, any information on that?

Sent from my GT-P3110 using xda app-developers app

ketut.kumajaya · May 19, 2013

dimfil said:
Please let me ask a question here.
I have already asked in Philz's thread but no answer till now.

Can Philz restore backups made within cwm?
I already have some backups from cwm times and if Philz could restore them that would save me a lot of time. Of course I could just try and see, but that information would be usefull to have before starting in advance.

Please, ketut, any information on that?

Sent from my GT-P3110 using xda app-developers app

Compatible: http://xdaforums.com/showthread.php?t=2201860

dimfil · May 19, 2013

ketut.kumajaya said:
Compatible: http://xdaforums.com/showthread.php?t=2201860

Great!
It's a lot of pages. I can't find it right away, but your answer is enough for me! So, they are compatible.
I will try and report if necessary.

Sent from my GT-P3110 using xda app-developers app

jaydyan · May 19, 2013

This great work Ketut, thanks for giving us easy way to dual boot. Keep up the good job.

distan7 · May 19, 2013

Ketut, congrats on your new achievement !

Just one quick question : Can you post all the features (other than dual-boot ability) of this blackhawk-next-kernel on first post ? Or the features are still the same with this :

ketut.kumajaya said:
This is [BOOT IMAGE][GT-P31XX] KK-Boot - Custom boot image for stock 4.1.1/4.1.2 ROM and [KERNEL][GT-P31XX][JB][4.2.2]CyanogenMod 10.1 unofficial kernel 3.0.31 combination, plus cm-10.1-blackhawk commit on github:

Remove Samsung debugging code in ext4 filesystem, inline with omapzoom

Initializing Android USB depending on the rom type, big thanks to gokhanmoral. This is the key of single kernel. Multiboot support not so far, you can reuse my kernel for multiboot (if you can)

Compiler optimizations

Kernel without CGROUPS support

Using SLQB memory allocator

Decrease MPU, IVA, and GPU voltage

Adapt and fix codeworkx's sysfs for controlling pivot mode. This is the key of landscape kernel

Stop the spam from audio driver

An exprimental config, remove a lot of debugging config from kernel: 775MB RAM

Stock JB 4.1.1/4.1.2 ROM: Using a slim version of busybox (from gokhanmoral's ramfs for siyahkernel-sgs3), bash and nano binary, sysrw and sysro script removed. GPU clock @ 384MHz + 2D GPU rendering, stock ROM really need an overclocked GPU.

CM/CM based ROM: As usual, change ro.sf.hwrotation value from 270 to 0 in /system/build.prop will transform your device to landscape mode, a workaround fix for boot animation graphic glitch. GPU clock @ 307MHz + 2D GPU rendering + 16bit transparency + disabled dithering + purging assets allowed

/system/etc/init.post_boot.sh is yours kernel tuning template. But remember, do not force your system too much until you are sure that your device is able to handle it.

Flash this using the latest CWM, CWM Touch, Philz Touch, or TWRP at your own risk!

Thank you

ketut.kumajaya · May 19, 2013

distan7 said:
Ketut, congrats on your new achievement !

Just one quick question : Can you post all the features (other than dual-boot ability) of this blackhawk-next-kernel on first post ? Or the features are still the same with this :

Thank you

Same kernel, different ramdisk. Thanks for your support :good:

ketut.kumajaya · May 19, 2013

STOP PRESS: Update PhilZ Touch to 5.03.7 http://xdaforums.com/showpost.php?p=39935850&postcount=89!

brolee93 · May 19, 2013

Oh good news my brother I am happy

Envoyé depuis mon GT-N7100 avec Tapatalk

Andrev01 · May 19, 2013

Couple questions to ketut

Please try to answer me - noobie

1) I can flash this for single rom, yes? It should be better than previous version?
2) I can still turn Tab on, press volume down button to boot into CWM?
3) How to turn off the boot menu? (I think I don't need it)

ketut.kumajaya · May 19, 2013

Andrev01 said:
Couple questions to ketut Please try to answer me - noobie

1) I can flash this for single rom, yes? It should be better than previous version?
2) I can still turn Tab on, press volume down button to boot into CWM?
3) How to turn off the boot menu? (I think I don't need it)

1. Yes as covered by Dual Boot FAQs. No.
2. Yes.
3. Can not be, maybe the next version. Reboot to recovery and bootloader may be removed for security reasons.

[KERNEL][SINGLE/DUAL BOOT][JB/KK][STOCK/CM]blackhawk's NEXT kernel 2.4

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