[KERNEL] [4.4] [Multiboot] GraKernel

Grarak · Jan 4, 2014

GraKernel

This kernel only supports i920x variants! TW 4.4 and AOSP 4.4

Welcome to GraKernel! I am horrible in naming things, so I just take the first 3 letters of my name and combine it with kernel.

I won't include useless feature to this kernel, only features which give the users proper benefits. Currently I am trying to give the users a balance of performance and battery life, so don't expect this kernel will make your phone faster than other ones. This kernel is made for daily usage!

Most of the features I will port from the msm8960 platform (i9505).

The kernel comes with Synapse. You will find all advanced settings in it.

Sources
Kernel: https://github.com/Grarak/grakernel-msm8930
Ramdisk: https://github.com/Grarak/RomSwitcher-melius

Features

boot multiple roms on your phone
(up to 5 roms only 4.4 AOSP roms are supported currently)
3.4.94
based on msm8930 kernel from CyanogenMod (CAF-Kernel)
Build with Linaro 4.9.1 Toolchain optimized by Christopher83
CPU Overclock up to 2052 MHz
CPU Underclock down to 81 MHz
CPU Governors:
- conservative
- ondemand
- intellidemand
- powersave
- interactive (default)
- performance
- intelliactive
GPU Governors:
- performance
- ondemand (default)
- simple
I/O Schedulers:
- deadline
- row
- cfq
- bfq (default)
- sio
- fiops
XZkern
CSnappy compression/decompression:
CPU Voltage Control
exfat
f2fs
Battery Voltage Control
Intelliplug (intelligent hotplug)
Intelli-Thermal
Dynamic Fsync Control
Frandom Support (module)
Vibration Control
LED Control
MSM Kcal
zRam
Kexec hardboot
Support for Synapse

Download
GraKernel

TW = TouchWiz
KTT = Korean Version

Credits
faux123
arco68
AndreiLux
Ezekeel
Torvalds
Tassadar
F4K
Codeaurora
ktoonsez
CyanogenMod
Google
Samsung

Grarak · Jan 4, 2014

Changelog

2.6

Patch kernel to 3.4.94

Intelliplug upstream patches

Intellidemand upstream patches

Sync with CM

Update RS Recovery

2.5

sync with CM (AOSP)

update synapse options

2.4

sync with CM (AOSP)

Merge with KK (TW)

2.3

update RomSwitcher Recovery to 6.0.49 (not for TW version)

update Ramdisk

2.2

patched kernel to 3.4.91

remove 2106MHz CPU step

2.1

new CPU frequencies

add TW edition

2.0

remove Sound Control

remove GPU Voltage Table

add Input limit and fastcharging current to Battery Control

1.9

remove fastcharge

add Battery Voltage Control

1.8

remove 2106 MHz CPU Freq step

fix fastcharge

Linaro Toolchain 4.9.1 2014.15 by christopher83

1.7

add MSM Kcal

1.6

switch to Linaro Toolchain 4.9.1 A15 by christopher83

add LED control

add f2fs format

add romswitcher

1.5

add Intelli-Thermal

add 2.1 GHz step

intelliactive: add upstream patches

1.4

wlan: Prima 3.2.7.47

update BFQ scheduler to v7r2

add cache2dmanager

intelliplug: special adaption for dualcore devices

1.2.3

Sync with latest cm sources

1.2.2

add support for newer cm builds and pacman

1.2.1

remove romswitcher for now

wlan: Prima 3.2.7.42

1.2

add Intelliactive

wlan: Prima 3.2.7.38

updated RS Recovery with latest cwm sources

fix installing recovery from synapse

1.0

clean up intelliplug and intellidemand to avoid log spamming

increase max voltage limit (fix 2052 MHz step)

decrease min voltage limit

0.9

wlan: Prima 3.2.7.33

modify intelli plug for our phone

add an option to enable negative display

add missing mdnie options for synapse

0.8

add GPU Voltage Control

add some missing options in Synapse

0.7

add CPU underclock down to 162 MHz

add GPU overclock up to 512 MHz

wlan: Prima 3.2.7.27

fix wifi for all roms after 20140116

add Vibration Control

add support for Synapse

fix Kexec Hardboot

enable Android Logger by default

change to Linaro 4.8.3 Toolchain optimized by Christopher83

0.6

ML2 source drop

exfat update to 1.25

wlan: Prima 3.2.7.24

Implement kexec-hardboot

Back to 3.4.0 kernel (stability issues)

0.5.1

fix sdcard mounting

0.5

add Multiboot support via RomSwitcher

update Prima to 3.2.7.23

enable Vmalloc saving

0.4

back to Faux Sound Control 2.1

update ext4 to latest version

patch to 3.4.11

add sys interface to control logger mode

0.3

update Faux Sound Control to 3.1

add simple GPU Governor

switch to CyanogenMod Ramdisk

add Google's Snappy compression

add Google's Snappy decompression

add sio scheduler

add fiops scheduler

0.2

add Fastcharge Control

overclock to 2052 MHz

increase read speed of deadline scheduler

increase default readahead value to 1024kB

add LZ4 compression

add LZ4 decompression

add Intelliplug

add Dynamic Fsync control

remove noop scheduler

add intellidemand governor

add Frandom module

0.1

Initial Release

Grarak · Jan 4, 2014

How to use kernel features

This kernel comes with Synapse. Synapse has been written by @AndreiLux. The App works with JSON which will generate from UCI (Universal Configuration Interface). So it is possbile to add an interface for a specific kernel. After installing the kernel you will find Synapse in your App Drawer.

Kexec hardboot

Code:

kexec --load-hardboot zImage --initrd=ramdisk.gz --mem-min=0x85000000 --command-line="$(cat /proc/cmdline)"
kexec -e

Grarak · Jan 4, 2014

How to use Multiboot feature

Make sure busybox is installed
Make sure your internal SD card has at least 1GB free space (one AOSP + Gapps rom requires 650MB)
Download RomSwitcher App: Download
Follow the instruction in the app
Select Reboot to RomSwitcher Recovery
In romswitcher section install a rom of your choice

How to select roms
Use the App

FAQ

I can't switch back to firstrom! why?
Check root access, check busybox, use SuperSU (Flash it, do not install it from store)
or you open Terminal and type in "echo 1 > /data/media/.rom"

I want to remove 2nd rom. How???!!
Wipe options in romswitcher recovery or in the App

Where are the roms?
/data/media/.(2/3/4/5/etc.)/rom

shayneflashindaily · Jan 4, 2014

Thanx man flashing soon.

2SHAYNEZ

yusopa · Jan 5, 2014

Gud job grarak. Hope more from you in future

Sent from my GT-I9205 using XDA Premium 4 mobile app

---------- Post added at 02:22 AM ---------- Previous post was at 01:28 AM ----------

Grarak for sound terminal said can't execute what that mean. And for voltage no such fil in directory. I already intall the kernel

Sent from my GT-I9205 using XDA Premium 4 mobile app

Grarak · Jan 5, 2014

yusopa said:
Gud job grarak. Hope more from you in future

Sent from my GT-I9205 using XDA Premium 4 mobile app

---------- Post added at 02:22 AM ---------- Previous post was at 01:28 AM ----------

Grarak for sound terminal said can't execute what that mean. And for voltage no such fil in directory. I already intall the kernel

Sent from my GT-I9205 using XDA Premium 4 mobile app

Did you try to install Trickster Mod? I am not sure whether it supports sound control or voltage control

And did you typ in 'su' before you change the values?

Btw: 0.2 is out

look to changelog for more details

kipue · Jan 5, 2014

Grarak said:
last one

Hi Grarak, thanks!
testing this now.
I flashed v2, and had to also flash superuser manually. I do not think you mention that in OP, so maybe that would be necessary?

yusopa · Jan 5, 2014

'Su' is type before that. I will down and try new version

Sent from my GT-I9205 using XDA Premium 4 mobile app

Grarak · Jan 5, 2014

kipue said:
Hi Grarak, thanks!
testing this now.
I flashed v2, and had to also flash superuser manually. I do not think you mention that in OP, so maybe that would be necessary?

Superuser?

I don't understand
The kernel won't change anything of superuser side

Sent from my Galaxy Nexus using xda app-developers app

Grarak · Jan 5, 2014

yusopa said:
'Su' is type before that. I will down and try new version

Sent from my GT-I9205 using XDA Premium 4 mobile app

Ok I did some research for you

Trickster mod supports voltage and sound control from faux
So please download it from play store

Sent from my Galaxy Nexus using xda app-developers app

kipue · Jan 5, 2014

Grarak said:
Superuser?

I don't understand
The kernel won't change anything of superuser side

Sent from my Galaxy Nexus using xda app-developers app

I meant I lost root

My apps like titanium complained that I had no root.
I'm running Slim right now, and trying to activate root from the menu would not work. Had to flash latest super user from Chainfire

Yes, installed faux controls, and it works

Grarak · Jan 5, 2014

kipue said:
I meant I lost root
My apps like titanium complained that I had no root.
I'm running Slim right now, and trying to activate root from the menu would not work. Had to flash latest super user from Chainfire

Yes, installed faux controls, and it works

Ok will take a look

Bte forgot to say

I have the device but touchscreen is broken so I cannot check the functionalities
I only can check whether the device is booting

Sent from my Galaxy Nexus using xda app-developers app

kipue · Jan 5, 2014

Grarak said:
Ok will take a look

Bte forgot to say

I have the device but touchscreen is broken so I cannot check the functionalities
I only can check whether the device is booting

Sent from my Galaxy Nexus using xda app-developers app

Ok, well, you'll get reports here

For now I feel like I get noticeably better perfs in the games I tried.
Some of them I haven't played since flashing Slim, so it could be it.
Maybe someone else can try and confirm if that's not just my imagination?

yusopa · Jan 5, 2014

Thank grarak already test. But i think your kernel make device likely lost root. Like kipue said. I on CM

Sent from my GT-I9205 using XDA Premium 4 mobile app

gilbertvpuen · Jan 5, 2014

Had a bootloop after flashing this via philz cwm touch. Im in cm11..

Sent from my GT-I9205 using XDA Premium HD app

yusopa · Jan 5, 2014

gilbertvpuen said:
Had a bootloop after flashing this via philz cwm touch. Im in cm11..

Sent from my GT-I9205 using XDA Premium HD app

I on CM too. No bootloop bro. And i use philz too

Sent from my GT-I9205 using XDA Premium 4 mobile app

Kid_Ding · Jan 5, 2014

yusopa said:
I on CM too. No bootloop bro. And i use philz too

Sent from my GT-I9205 using XDA Premium 4 mobile app

i'm on cm too. no bootloop and using philz cwm. i also lost root.

either way nice kernel

kipue · Jan 5, 2014

yusopa said:
Thank grarak already test. But i think your kernel make device likely lost root. Like kipue said. I on CM

Sent from my GT-I9205 using XDA Premium 4 mobile app

You can fix the root by using one of the methods here (flashing a zip or from market), it's what I did.
Haven't tested the battery life yet, but for now, that kernel seem worth using

http://xdaforums.com/showthread.php?t=1538053

shayneflashindaily · Jan 5, 2014

Running fine with AOKP......someone post your voltage settings I'd like to take a look.

[KERNEL] [4.4] [Multiboot] GraKernel

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