[DEV] Building a custom kernel and kernel modules for stock kernel

[DEV] Building a custom kernel and kernel modules for stock kernel - Amazon Fire Phone

Since fire phone doesn't have a bootloader unlock at the moment. There is no point in building a custom kernel. But By building a kernel we can build kernel modules which work on the stock kernel. And yes you can load unsigned kernel modules without a problem since fire phone doesn't use tz apps to verify kernel modules like Samsung does.
Setup
Source
Download the fire phone sources for firmware 4.6.1 from here. And extract the platfrom.tar inside the archive to somewhere(KERNEL_DIR).
toolchain
You can use the android ndk from google, But it requires some setup. I'm using linaro toolchain from here. You can use compiler version 4.7, 4.8 or 4.9. Kernel I'm using (Firmware 4.6.3 - Linux 3.4-perf-g280c96c) is built with gcc-4.7. But I'm using this gcc-4.9. Download it, extract is somewhere(TOOLCHAIN_DIR) and add the $TOOLCHAIN_DIR/bin to your PATH. Theoretically you would be able to build the kernel on windows using Cygwin or MSYS tools but using Linux is better.
config
Connect your phone trough adb and run
Code:
adb pull /proc/config.gz
zcat config.gz > $KERNEL_DIR/kernel/qcom/3.4/.config
With this config you will run into some problems because of a missing "trapz_generated_kernel.h". I don't know if this is an auto generated file when they build android as a whole or amazon removed this explicitly(can they do that without violating GPL?). Anyway It looks trapz is some low level kernel debugging function(comment here if you know more about it). We can safely disable it. Open $KERNEL_DIR/kernel/qcom/3.4/.config in a text editor and change the lines
Code:
CONFIG_TRAPZ=y
CONFIG_TRAPZ_TP=y
CONFIG_TRAPZ_TRIGGER=y
CONFIG_HAVOK=y
to
Code:
#CONFIG_TRAPZ=y
#CONFIG_TRAPZ_TP=y
#CONFIG_TRAPZ_TRIGGER=y
#CONFIG_HAVOK=y
building
Now edit the $KERNEL_DIR/kernel/qcom/3.4/Makefile and add this changes
Code:
EXTRAVERSION = -perf-g280c96c
This is at the top of the makefile. If we don't add this, vermagic for the modules will differ from stock kernel and they won't load.
ARCH=arm
CROSS_COMPILE=arm-linux-gnueabihf-
Click to expand...
Click to collapse
Here arm-linux-gnueabihf- is my cross compiler frefix. Look in $TOOLCHAIN_DIR/bin/ to find it.
Now cd into $KERNEL_DIR/kernel/qcom/3.4/ and do
Code:
make
The build will fail a few times complaining about missing headers. Most of the time it's just
Code:
#include <myheader.h>
instead of
Code:
#include "myheader.h"
Edit the source file where the build fails and change <>s to ""s. (maybe android ndk ignores the difference and include the headers anyway)
After kernel compiles, we are good to go. We can use this kernel sources to build kernel modules for stock kernel.
Kernel modules
To build the kernel modules, we basically need two things. An approximate kernel source and the Module.symvers file from the original kernel. We can get the Module.symvers file by building the complete kernel as explained above or Just extract it from our stock kernel.
To extract the Module.symvers from the stock kernel, extract the boot.img file from firmware update image. Get mkbootimg tools from here compile it and run
Code:
unmkbootimg --kernel zImage ---ramdisk ramdisk.cpio.gz -i boot.img
After you get the zImage. Download extract-symvers script from here and run
Code:
python2 extract-symvers.py -B 0xc0008000 zImage > Module.symvers
place this file in $KERNEL_DIR/kernel/qcom/3.4/ (You still have to do the changes mentioned above in kernel config and building section run make in the $KERNEL_DIR/kernel/qcom/3.4 and intrupt it after few seconds)
Now you can build loadable modules against this source. Here is a hello world kernel module.
Code:
//hello.c
#include<linux/module.h>
#include<linux/kernel.h>
#include<linux/init.h>
static int __init hello_start(void)
{
printk("hello to the world from module");
return 0;
}
static void __exit hello_end(void)
{
printk("heloo exit");
}
module_init(hello_start);
module_exit(hello_end);
Code:
#Makefile
KERNEL_DIR=<your kernel dir>/kernel/qcom/3.4
obj-m := hello.o
PWD := $(shell pwd)
default:
$(MAKE) ARCH=arm CROSS_COMPILE=armeb-linux-gnueabi- -C $(KERNEL_DIR) SUBDIRS=$(PWD) modules
Put this files in a folder and run make in it. Change the paths and cross compiler prefix according to your setup. and run make.
After the build push the hello.ko to the phone.
Code:
adb push hello.ko /sdcard/
adb shell
su
cd sdcard
insmod hello.ko
run dmesg and you'll see the message.
I'm currently trying to build kexec module from hashcode's sources and USB OTG modules.
I'm attaching a few thing helped me do this.

since they have released this version of the fire os they have to provide the source code
see
http://www.gnu.org/licenses/gpl-faq.html#GPLRequireSourcePostedPublic
you have just shown that the source code they releases for the kernel does not match the one used to build the kernel. This means it is a clear violation of the gpl and amazon is in breach and can be sued.
on another note.
are the drivers for the nfc and camera compiled as a module or into the kernel?

They have yet to provide 4.6.3 and 4.6.4 kernel sources too.
I don't know exactly but in order for NFC and camera to work drivers are required and they are in fact compiled into the kernel.
The problem we currently have with NFC and camera is proprietary hal (hardware abstraction libraries) They are a part of Android and does not subject to GPL. Amazon changed the original android way how hal works and didn't release the sources!
by looking at the kernel drivers maybe we would be able to implement hal from scratch. But I don't see that intense dev support for fire phone. If you are up for it camera sources are at $KERNEL_DIR/kernel/qcom/3.4/drivers/media/platform/msm/camera_v2/

Major MAJOR respect for all of you making the Fire Phone even better!

@madushan1000
Could we do something like this to install a custom boot.img?
http://forum.xda-developers.com/optimus-l9/general/guide-install-custom-roms-locked-t3249828

I don't own this device but has anyone tried to see if kexec works?

spudowiar said:
I don't own this device but has anyone tried to see if kexec works?
Click to expand...
Click to collapse
Nope, I was working on it. But then I got a job. It will be sometime before I can start working on it again.

Could someone please provide the config extracted from /proc/config.gz?
I can't find this on CM11 rom for some reason.

Building the kernel now.
Some bugs are in the code and -Wall and gcc-wrapper.py escalate the warnings.
I wonder if those errors are there on purpose XD
helloworld.ko loaded successfully
I was able to execute kexec without anything. Just the binary.
Will keep you posted - this hacking might take a while to figure it all out.
I already have 3.4 kernel from the amazon sources.
I have the kexec userland program.
What is left is a loadable kexec kernel module (if that is possible at all).

removed

Okarin said:
Are we even sure those Amazon Kernel Sources are correct?
Those errors caught by the wrapper scripts are giving me the creeps.
Git the kexec_load.ko build.
Currently hands on insmod.
Phone doesn't do a reboot any longer:
insmod kexec_load.ko
init_module(0xb6e6c008, 408241, "") = -1 ENOENT (No such file or directory)
write(2, "insmod: init_module '/sdcard/kex"..., 79insmod: init_module '/sdcard/kexec_load.ko' failed (No such file or directory)
) = 79
munmap(0xb6e6c000, 409600) = 0
mprotect(0xb6f8c000, 4096, PROT_READ|PROT_WRITE) = 0
mprotect(0xb6f8c000, 4096, PROT_READ) = 0
close(0) = 0
close(1) = 0
close(2) = 0
futex(0xb6f6cd74, FUTEX_WAKE_PRIVATE, 2147483647) = 0
munmap(0xb6f8c000, 4096) = 0
exit_group(-1) = ?
First goal is to get module loaded.
Goal reached:
kexec_load 27813 0 - Live 0x00000000 (O)
procfs_rw 12770 0 - Live 0x00000000 (O)
wlan 3793980 0 - Live 0x00000000 (O)
Shouldn't be functional at all..
I disabled some function calls just to get the module loaded.
The missing symbols are:
soft_restart
arch_kexec
machine_shutdown
And the version I use does some insane function hooking ..
More rework is needed.
[email protected]:/data/local # ./kexec /sdcard/vmlinux
kernel: 0xaf12d008 kernel_size: 7e1354c
unrecoverable error: could not scan "/proc/device-tree/": No such file or directory
<6>[ 97.681256] Kexec_load: Replacement... :
<6>[ 97.681344] kexec_load : my_syscall_table : c0106244
<6>[ 97.681405] kexec_load : kexec_load before replacement : c01b346c
<6>[ 97.681480] kexec_load : kexec_load after replacement : bf3a5650
<6>[ 97.681546] kexec_load : reboot before replacement : c01a83f0
<6>[ 97.681616] kexec_load : reboot after replacement : bf3a6348
<6>[ 97.681675] Kexec_load: End replacement... :
<6>[ 202.694691] Kexec: - Starting kexec_load...
<6>[ 202.694849] Kexec: - ---- kexec_load - result : '0'
It gets better:
255|[email protected]:/data/local # ./kexec --dtb=/sdcard/zImage-dtb /sdcard/vmlinux
kernel: 0xaf1b1008 kernel_size: 7e1354c
kexec-zImage-arm : dtb.img BEFORE CUT : Start : '0xae66f008' - Length : '0xb411e9' - End : '0xaf1b01f1'
Segmentation fault
More tomorrow.
Click to expand...
Click to collapse
Where are you getting your kexec module sources from? BTW try using the original amazon kernal binary the phone is shipped with (we are sure it works). Don't use the custom kernel for the kexec tests (We don't know the custom kernel actually works)

madushan1000 said:
Where are you getting your kexec module sources from? BTW try using the original amazon kernal binary the phone is shipped with (we are sure it works). Don't use the custom kernel for the kexec tests (We don't know the custom kernel actually works)
Click to expand...
Click to collapse
Here is the thread I used as a starting point.
I will put up my "fork" on github after I get permission to do that
The userland part build like a charm once I took the compiler you recommended.
The kernel-module was tricky because the whole thing is modded like hell.
To be able to load I had to comment out some hard coded addresses and the calls to unresolvable symbols.

removed

Okay the kernel gets loaded.
But
kexec -e shuts off the device.
strace doesn't help.
On the plus side:
Devices are shutdown
Look promising
I need a way to tail dmesg ...
Okay a lot of digging around and I found out that the reboot syscall doesn't work properly..
It doesn't look like it hits the kexec_module it looks more like it hits the actualy sys_reboot
Okay reboot syscall hits my reboot-hook.
But the softreboot doesn't work now.
Okay there is some kind of watchdog runnig which doesn't like my kexec.
I need to kill it - that should happen tomorrow.

removed

I hit the same wall when I tried to isolate the kexec code from the kernel itself to a module. I stopped working on it because I lacked the time. BTW the error you are facing now
<3>[ 80.580644] BUG: scheduling while atomic: kexec/4067/0x00000002
Click to expand...
Click to collapse
is because memory allocator is trying to switch threads while you are in a syscall. it's because of lines like this
image = kzalloc(sizeof(*image), GFP_KERNEL);
Click to expand...
Click to collapse
Try changing GFP_KERNEL to GFP_ATOMIC. Other than that, I have another suggestion. Try to get the kernel to run in a single core mode before running kexec code. This might simplify things. I don't know how to do this though.

madushan1000 said:
I hit the same wall when I tried to isolate the kexec code from the kernel itself to a module. I stopped working on it because I lacked the time. BTW the error you are facing now
is because memory allocator is trying to switch threads while you are in a syscall. it's because of lines like this
Try changing GFP_KERNEL to GFP_ATOMIC. Other than that, I have another suggestion. Try to get the kernel to run in a single core mode before running kexec code. This might simplify things. I don't know how to do this though.
Click to expand...
Click to collapse
The atmic error is gone now. It went away after I disabled the watchtog.
smp_disable() is what you are looking for - but this causes the system to hard_reboot ATM XD

what happens if you kill every userlevel program before smp_disable()?

removed

#define tomorrow
Okay .. I worked out the preemption thing.
At least it does something.
Still a black screen and the MSM_WATCHDOG is a ***** again.
It needs to be suspended .. at least that what I get from the code I read here.
If I remove the driver too early the output in /proc/kmsg stops ..
If I try to remove it too late ... well it causes a resched while atomic.

Related

Google Android and Linux for Kaiser Volume II

The original thread:http://forum.xda-developers.com/showthread.php?t=396782 needs an abridged version.
==================================================
Go to http://www.androidonhtc.com/ if you're just starting as it has the latest info. This thread is to highlight the info from the original thread only.
Latest Builds
Port Status
==================================================
Compiling Android Kernel for Kaiser
Modify initrd.gz files and CPIO handling
system.img mounting, editing and rebuilding with ext2/3
system.img mounting, editing and rebuilding with cramfs
Howto: Pull from git (new/update/resync)
[WIP] Configuring WiFi Interface
==================================================

system.img mounting, editing and rebuilding with ext2/3
seidler2547: Post:
Actually I've played with Android a bit for now, and I changed to ext3. It doesn't only work - it's much faster, too! Startup time during the blinking android is about half of what it was before.
How-To:
Code:
Code:
cd /tmp
# prepare dirs
mkdir a-sys
mkdir a-ext
# prepare image
dd if=/dev/zero of=/where/is/sdcard/system.img.new bs=1M count=64
mkfs.ext3 /where/is/sdcard/system.img.new
# mount old image and copy to new
mount -o loop /where/is/the/system.img a-sys
mount -o loop /where/is/sdcard/system.img.new a-ext
cp -a a-sys/* a-ext/
Now you can unmount the old image and happily edit in the new image. Don't forget to rename the system.img.new to system.img (after you have unmounted it).
In your initrd, in file init, where it says
Code:
losetup /dev/block/loop1 /sdcard/system.img
...
mount -t cramfs -o ro,noatime,nodiratime /dev/block/loop1 /system
change "-t cramfs" to "-t ext2" or "-t ext3". You can also change the path (/sdcard/system.img) there.
Click to expand...
Click to collapse

Modify initrd.gz files and CPIO handling
dcordes: Post:
There is no magick in the initrd files. They are .cpio.gz files, gzipped cpio balls. To extract a .cpio.gz file named initrd-android.cpio.gz simply do
Code:
gunzip initrd-android.cpio.gz && cpio -i < initrd.android.cpio
Then you have the extracted rootfs. The reverse way would be, assuming you are inside your rootfs folder:
Code:
find ./ | cpio -H newc -o | gzip > ../my-initr-android-with-custom-stuffs.cpio.gz
And yes, you can remove and add applications you find that way.
Click to expand...
Click to collapse

system.img mounting, editing and rebuilding with cramfs
dzo: Post:
Hi, you can't just use mkcramfs on the system folder because the permissions will be wrong. This is the script I use:
Code:
Code:
out/host/linux-x86/bin/genext2fs -d out/target/product/generic/system -b 80000 -a system.ext2
mount -o loop system.ext2 /mnt/system
cp /mnt/system/usr/keychars/qwerty2.kcm.bin /mnt/system/usr/keychars/vogue-ts.kcm.bin
cp com.google.android.maps.jar /mnt/system/framework
cp Maps.apk Street.apk /mnt/system/app
mkfs.cramfs /mnt/system system.img
umount /mnt/system
#pcp system.img :/Storage\ Card/system.img
This also puts the maps app in (just copy from one of my images) and the vogue keymap. Without the source for the ril you will also need to copy my RIL (libreference-ril.so).
Click to expand...
Click to collapse

[WIP] Configuring WiFi Interface
This has been able to initialize the interface, assign arbitrary IP addresses but can not go further at the moment.
Code:
# ifconfig tiwlan0 192.168.1.100
# ifconfig tiwlan0 up
error: SIOCSIFFLAGS (Cannot assign requested address)
# ifconfig tiwlan0
tiwlan0: ip 192.168.1.100 mask 255.255.255.0 flags (down broadcast multicast)
dmesg will show:
Code:
wlan: no version for "struct_module" found: kernel tainted.
TIWLAN: Driver loading
trout_wifi_power: 1
trout_wifi_reset: 0
trout_wifi_set_carddetect: 1
TIWLAN: Found SDIO control (vendor 0x104c, device 0x9066)
TIWLAN: Driver initialized (rc 0)
TIWLAN: Driver loaded
Android's built-in wireless settings seem to disable the interface beyond just interfering with it, therefore it's best to stay with terminal and using 'ash' will give you a shell with command history (up/down scroll).
markya23: Post:
Need to create a folder in you system image package called /etc/wifi and copy tiwlan.ini, wpa_supplicant.conf and fw1251r1c.bin.
Need to copy the wlan.ko to /lib/modules in the system image (create the dir if required).
Create the new system image and boot Android. Start the dev console and type:
Code:
cp /system/etc/wifi/wpa_supplicant.conf /data/misc/wifi/wpa_supplicant.conf
insmod /system/lib/modules/wlan.ko
wlan_loader -f /system/etc/wifi/Fw1251r1c.bin -e /proc/calibration -i /system/etc/wifi/tiwlan.ini
cd /data/local/tmp
wpa_supplicant -f -Dtiwlan0 -itiwlan0 -c/data/misc/wifi/wpa_supplicant.conf &
ifconfig tiwlan0 192.168.1.100 netmask 255.255.255.0
ifconfig tiwlan0 up
Click to expand...
Click to collapse

Compiling Android Kernel for Kaiser
dwaradzyn: Post:
Here are brief instructions on how to compile android kernel for Kaiser from git.linuxtogo.org repository. I assume that running OS is Linux and it has everything required to build x86 or ia64 kernel. Beside that latest git software should be installed. The shell is assumed to be bash.
1. Let's start with creating a directory for kernel in home directory:
Code:
mkdir ~/android-kernel
cd android-kernel
2. Next thing is to get the sources from repository. To make it happen (this could take a while, it downloads 280MB):
Code:
git clone git://git.linuxtogo.org/home/groups/mobile-linux/kernel.git
OUTPUT:
Code:
Initialized empty Git repository in /home/user/android-kernel/kernel/.git/
remote: Counting objects: 908251, done.
remote: Compressing objects: 100% (153970/153970), done.
remote: Total 908251 (delta 755115), reused 906063 (delta 753016)
Receiving objects: 100% (908251/908251), 281.86 MiB | 292 KiB/s, done.
Resolving deltas: 100% (755115/755115), done.
Checking out files: 100% (22584/22584), done.
3. The htc-msm branch is of our interest (again it could take a few seconds):
Click to expand...
Click to collapse
*** Update, poly_poly-man states we are working off of htc-vogue not htc-msm. I'm leaving the original code here but I would urge you to modify the next line as poly has suggested:
Code:
cd kernel
git checkout -b htc-msm origin/htc-msm
OUTPUT:
Code:
Branch htc-msm set up to track remote branch refs/remotes/origin/htc-msm.
Switched to a new branch "htc-msm"
4. Let's take care of arm toolchain. Download this file (64MB) into ~/android-kernel:
Code:
[url]http://www.codesourcery.com/gnu_toolchains/arm/portal/package2549/public/arm-none-linux-gnueabi/arm-2008q1-126-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2[/url]
Unpack it:
Code:
cd ~/android-kernel
tar xjf arm-2008q1-126-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
5. Compile the kernel
Prepare default .config for Kaiser:
Code:
cd ~/android-kernel/kernel
make htckaiser_defconfig ARCH=arm
OUTPUT:
Code:
........
lots of output
........
# configuration written to .config
#
And finally compile the kernel to get zImage (takes a minute or two):
Code:
export PATH=~/android-kernel/arm-2008q1/bin:$PATH
make zImage ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi-
OUTPUT:
Code:
........
lots of output
........
Kernel: arch/arm/boot/zImage is ready
Now copy ~/android-kernel/kernel/arch/arm/boot/zImage to your phone and play with it.
Some ending tips:
A. You can compile earlier versions of sources in repository. To do that click on one of "commit" links on page:
Code:
http://git.linuxtogo.org/?p=groups/mobile-linux/kernel.git;a=summary
and read commit id (for example: f9d1bcea9342348623f5a57588044f76d8b649cd):
Code:
git reset --hard f9d1bcea9342348623f5a57588044f76d8b649cd
It will override any changes you made to files in ~/android-kernel/kernel.
B. Once you have downloaded git repository, you can swallow latest changes by issuing:
Code:
cd ~/android-kernel/kernel
git pull
C. If your machine has more than one cpus/cores you can speed up kernel compilation by adding -j <cores/cpus_number>, for example (dual core):
Code:
make -j 2 zImage ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi-
Click to expand...
Click to collapse

bad internet makes for double post. Please delete

wrong directions for kernel - we are working off of htc-vogue branch... not htc-msm...

can we make the internet work through the usb cable?

how does android know which device node is gps? it's not picking it up for kaiser...
if you enable gps in winmo (or enable it in smd0 - I believe the command is @startgps), smd7 is a nmea stream (acts as a serial GPS).... could a symlink possibly be the right solution to this?

Howto: Pull from git (new/update/resync)
This will download the latest from git:
dwaradzyn: Post:
Here are brief instructions on how to compile android kernel for Kaiser from git.linuxtogo.org repository. I assume that running OS is Linux and it has everything required to build x86 or ia64 kernel. Beside that latest git software should be installed. The shell is assumed to be bash.
1. Let's start with creating a directory for kernel in home directory:
Code:
mkdir ~/android-kernel
cd android-kernel
2. Next thing is to get the sources from repository. To make it happen (this could take a while, it downloads 280MB):
Code:
git clone git://git.linuxtogo.org/home/grou
ps/mobile-linux/kernel.git
OUTPUT:
Code:
Initialized empty Git repository in /home/user/android-kernel/kernel/.git/
remote: Counting objects: 908251, done.
remote: Compressing objects: 100% (153970/153970), done.
remote: Total 908251 (delta 755115), reused 906063 (delta 753016)
Receiving objects: 100% (908251/908251), 281.86 MiB | 292 KiB/s, done.
Resolving deltas: 100% (755115/755115), done.
Checking out files: 100% (22584/22584), done.
3. The htc-msm branch is of our interest (again it could take a few seconds):
Code:
cd kernel
git checkout -b htc-msm origin/htc-msm
OUTPUT:
Code:
Branch htc-msm set up to track remote branch refs/remotes/origin/htc-msm.
Switched to a new branch "htc-msm"
4. Let's take care of arm toolchain. Download this file (64MB) into ~/android-kernel:
Code:
http://www.codesourcery.com/gnu_toolchains/arm/portal/package2549/public/arm-none-linux-gnueabi/arm-2008q1-126-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
Unpack it:
Code:
cd ~/android-kernel
tar xjf arm-2008q1-126-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
5. Compile the kernel
Prepare default .config for Kaiser:
Code:
cd ~/android-kernel/kernel
make htckaiser_defconfig ARCH=arm
OUTPUT:
Code:
........
lots of output
........
# configuration written to .config
#
And finally compile the kernel to get zImage (takes a minute or two):
Code:
export PATH=~/android-kernel/arm-2008q1/bin:$PATH
make zImage ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi-
OUTPUT:
Code:
........
lots of output
........
Kernel: arch/arm/boot/zImage is ready
Now copy ~/android-kernel/kernel/arch/arm/boot/zImage to your phone and play with it.
Some ending tips:
A. You can compile earlier versions of sources in repository. To do that click on one of "commit" links on page:
http://git.linuxtogo.org/?p=groups/mobile-linux/kernel.git;a=summary
and read commit id (for example: f9d1bcea9342348623f5a57588044f76d8b649cd):
Code:
git reset --hard f9d1bcea9342348623f5a57588044f76d8b649cd
It will override any changes you made to files in ~/android-kernel/kernel.
B. Once you have downloaded git repository, you can swallow latest changes by issuing:
Code:
cd ~/android-kernel/kernel
git pull
C. If your machine has more than one cpus/cores you can speed up kernel compilation by adding -j <cores/cpus_number>, for example (dual core):
Code:
make -j 2 zImage ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi-
Click to expand...
Click to collapse
poly_poly-man: Post:
This will pull from git which will update/resync a git pull:
Code:
mkdir foo
cd foo
git init
git pull git://git.linuxtogo.org/home/groups/mobile-linux/kernel.git htc-vogue
Click to expand...
Click to collapse

I'll follow-up with some nice, full instructions...
1. prerequisites: arm-none-linux-gnueabi toolchain (gentoo users can use crossdev - otherwise.... uhh... idk?), git, a host toolchain (gentoo users have this by default, most other distros have this under "development" in their package managment... if you have gcc, you're probably set).
2. mkdir kernel
cd kernel
git init
git pull git://git.linuxtogo.org/home/groups/mobile-linux/kernel.git htc-vogue
3. make vogue_defconfig
4. make
5. cp arch/arm/boot/bzImage /path/to/sdcard/
6. to update, run the git pull command by itself again, run make (may have to do the config line again if it's changed) and cp.

Thanks for the post poly. I don't know how that's different from what the post I referenced as I'm not +4 at this stuff.. I did what you posted with android kernel from git and got a 1.2mb zImage that crashed HaRET.. I'm guessing this is my bad. What could I have overlooked? Thanks

enatefox said:
Thanks for the post poly. I don't know how that's different from what the post I referenced as I'm not +4 at this stuff.. I did what you posted with android kernel from git and got a 1.2mb zImage that crashed HaRET.. I'm guessing this is my bad. What could I have overlooked? Thanks
Click to expand...
Click to collapse
where'd you get your toolchain?
does building a regular (host arch) kernel work?
Also - what's the proper way to build a system.img by hand? I'm looking to modify that quite a bit, but can't find a persistent source tree besides the main one, which is seriously crippled.

I thought you were one of the experts, lol. I've been left with no support on how dzo, et all are customizing kernels so I've been in read only mode on the 'other thread' looking elsewhere for support.
Just wanted to ask you first, what's with the Dream radio? I know you posted the mods censored it but what's with the sig now? It piqued my interest... as I'm using (shudder) winmo on the regular while Android is being worked on I was hoping it would be worth looking into if it doesn't brick my phone.
Answers to your questions:
As I said, my own zImage is no go. Check this link (not for our phone but the links at the bottom are pretty useful): http://wiki.xda-developers.com/index.php?pagename=BlackstoneLinux#Runningx20.Linuxx20.onx20.blackstone
I got the toolchain from the steps I (re)posted on this thread:
http://forum.xda-developers.com/showpost.php?p=2269384&postcount=184 so that gave me a 1.2mb zImage where everyone's been posting 1.4mb-- I know there's something not right. As far as building a system.img by hand? I've taken existing ones either from posted bundles or from Android src directly. Maybe I suck (real possibility) but cupcake and 1.0 have been pretty flaky for me (there are system.img's included in the source). You should know how to mount and edit them though (look at the first post on this thread). My experience is the git source is useless unless you've got a G1-- I don't know how to make it run on Tilts. If it does work, then the answer to your question about host arch compiling is no-- it has to be ARMv5 for our phones. That's where this line comes in:
make zImage ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi-
Click to expand...
Click to collapse
Seriously, I need help learning how to modify the kernel-- I've been a "google will have the answer for me" Linux bystander for a while and while I'm good at what I've done I'm not so good at this uncharted territory. I'm really looking for help to figure out how to compile modules (saurik and dzo never got back to me about that) and all I've gotten is "wait while I do it myself" which is cool they're working on it but we're obviously here to work on it too.
I've even been trying to get Debian installed (familiar territory for me) so I can at least get stuff working. You do know that Android is nothing but a Java VM layer for Linux and it will (could be) put on any self-respecting distro. Personally, I want Debian on my phone with an Android chroot as that would trump all.
Sorry to rant but you seem more about figuring this out like me and I don't know who else is really working on this besides the dev-gods who have no tutorials.

enatefox said:
I thought you were one of the experts, lol. I've been left with no support on how dzo, et all are customizing kernels so I've been in read only mode on the 'other thread' looking elsewhere for support.
Just wanted to ask you first, what's with the Dream radio? I know you posted the mods censored it but what's with the sig now? It piqued my interest... as I'm using (shudder) winmo on the regular while Android is being worked on I was hoping it would be worth looking into if it doesn't brick my phone.
Click to expand...
Click to collapse
It never actually worked... maybe. My phone was reporting the wrong version on a *different* radio (1.65.21.18, was saying 19) before, and trying to flash this changed the version to be correct. 0x300 radios will never flash, and this as a 0x301 *will* brick your phone. Then again... like 2 people reported epic success... In other words, no, it never really existed.
Answers to your questions:
As I said, my own zImage is no go. Check this link (not for our phone but the links at the bottom are pretty useful): http://wiki.xda-developers.com/index.php?pagename=BlackstoneLinux#Runningx20.Linuxx20.onx20.blackstone
I got the toolchain from the steps I (re)posted on this thread:
http://forum.xda-developers.com/showpost.php?p=2269384&postcount=184 so that gave me a 1.2mb zImage where everyone's been posting 1.4mb-- I know there's something not right. As far as building a system.img by hand? I've taken existing ones either from posted bundles or from Android src directly. Maybe I suck (real possibility) but cupcake and 1.0 have been pretty flaky for me (there are system.img's included in the source). You should know how to mount and edit them though (look at the first post on this thread). My experience is the git source is useless unless you've got a G1-- I don't know how to make it run on Tilts. If it does work, then the answer to your question about host arch compiling is no-- it has to be ARMv5 for our phones. That's where this line comes in:
make zImage ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi-
Click to expand...
Click to collapse
unnecessary - zImage is implied, and the other two are in the Makefile already.
Seriously, I need help learning how to modify the kernel-- I've been a "google will have the answer for me" Linux bystander for a while and while I'm good at what I've done I'm not so good at this uncharted territory. I'm really looking for help to figure out how to compile modules (saurik and dzo never got back to me about that) and all I've gotten is "wait while I do it myself" which is cool they're working on it but we're obviously here to work on it too.
Click to expand...
Click to collapse
we have 0 modules at the moment (but perhaps support - I forget). Just compile stuff in - modules are very bad.
I've even been trying to get Debian installed (familiar territory for me) so I can at least get stuff working. You do know that Android is nothing but a Java VM layer for Linux and it will (could be) put on any self-respecting distro. Personally, I want Debian on my phone with an Android chroot as that would trump all.
Click to expand...
Click to collapse
It's a nice idea, but remember where a lot of the current coding is taking place - the ril, which is part of android (the system.img, at least), and doesn't go across to other distros quite as well. I think running Dalvik alongside whatever you're running in Debian might be too much for this phone's epically slow processor (compared to msm7201a).
Sorry to rant but you seem more about figuring this out like me and I don't know who else is really working on this besides the dev-gods who have no tutorials.
Click to expand...
Click to collapse
my instructions should work - they are what I use, at least.

Someone should change the instructions to (in the Wiki they are correct):
make ARCH=arm vogue_defconfig
I compiled my kernel, booted in Ubuntu, but had no touchscreen at all, I am not sure if the vogue_defconfig file takes care of everything necessary, so now I am checking everything via menuconfig to see whether eveything is all right or not.
DOMy

Do not Use Ext3 on SD cards
enatefox said:
seidler2547: Post:
Click to expand...
Click to collapse
You should NOT be using ext3 on any sort of flash ram device. You will wear out the medium. Journaling is just a bad idea in this sort of situation.
http://www.handhelds.org/hypermail/familiar/273/27320.html
3) ext3 is "very bad" because of the way it does journaling. It does journal, which seems like a good idea, but it also automatically periodically writes a lot of things out to the same secors on disk. I don't have first hand experience with this, but I remember somebody familiar with ext3 writing about this. It's method of journaling is not particularly intended for any kind of wear leveling at all.
Click to expand...
Click to collapse
http://www.mail-archive.com/[email protected]/msg38988.html
There are three disadvantages with the journaled file system:
- lower performance at write time, since there is the extra work of the
journal
- increased chance of damaging the SD card due to extra use of the
journal causing wearing
- increased space usage (for the journal)
Click to expand...
Click to collapse
And this is the general consensus within most of linux on ext3 and wearing mediums. I'm not sure if Andriod's kernel can do ext4, but ext4 can run without a journal.
Yet another reason not to use ext3 is that is near impossible to undelete something, something you can do with ext2.
-edit-
It looks like Android can use Ext4
http://thatsbadass.com/android/tag/ext4/

haha! is a good job, i like it

can't run android on my kaiser
hi folks,
i have read many threads here and on androidonhtc.com, i have read also the install instructions, but it seems im too stupid to run it.
it fails on "can't find system.img". i wil not flash it, i will run it from sd-card.
so, please can anyone attached an actually zip file which i just unpack und run haret.exe to work android on my kaiser ?
thanks and best regards
lenzen

[KERNEL] is Tiny-shmem good for android?

Hi fellows,
I have made a patch to enable the use of Tiny-SHMEM instead the full SHMEM filesystem in android kernels. I think we can gain some performance here. It seems to be working, but I have some thoughts to share with you.
1) It seems that android uses /dev/ashmem rather than /dev/shm, and the only two functions of mm/shmem.c needed by mm/ashmem.c is available on tiny-shmem.
2) Android also needs to mount filesystem as tmpfs. If we use tiny-shmem, than tmpfs will use ramfs code. So, we will support online growing, but we can not limit sizes. I have just one partition (/app-cache) that has size limits. The question is: we actually need size limits?
If anyone like, I can release the patch after some testing I'm doing.
Thanks,
Ronan

I can help u test on, well you know!

Hi diz!
So, I'm attaching a patch for GT-P1000 kernels. It should be fine on every version.
It just modify the Init/Kconfig file since the tiny-shmem is already on source code and you just need to adjust the configuration to define CONFIG_TINY_SHMEM.
If you want to test, apply this patch into your kernel tree, execute 'make menuconfig', go to section:
General Setup -> Configure standard kernel features (for small systems) -> Default shmem filesystem implementation -> Tiny shmem filesystem
and then compile.

Any updates in this project??
Sent from my GT-P1000 using XDA App

jadmask3rlm said:
Any updates in this project??
Sent from my GT-P1000 using XDA App
Click to expand...
Click to collapse
Still need people to test it... RAMFS could induce some problems...

My latest unstable kernel version has this patch applied and tiny-shmem is selected. If anyone wants to test: http://forum.xda-developers.com/showthread.php?t=1274855
But, it is just for LATIN models!

Ronis_BR said:
Hi diz!
So, I'm attaching a patch for GT-P1000 kernels. It should be fine on every version.
It just modify the Init/Kconfig file since the tiny-shmem is already on source code and you just need to adjust the configuration to define CONFIG_TINY_SHMEM.
If you want to test, apply this patch into your kernel tree, execute 'make menuconfig', go to section:
General Setup -> Configure standard kernel features (for small systems) -> Default shmem filesystem implementation -> Tiny shmem filesystem
and then compile.
Click to expand...
Click to collapse
Hello
I have, and then someone else (just to make sure) applied the patch, but the "default shmem filesystem implementation" option is not available in general setup, after running 'make menuconfig'

dizgustipated said:
Hello
I have, and then someone else (just to make sure) applied the patch, but the "default shmem filesystem implementation" option is not available in general setup, after running 'make menuconfig'
Click to expand...
Click to collapse
yea the same happened with me too(on another device too)
so what i did
in .config
add this:
CONFIG_TINY_SHMEM=y (it should be 'is not set')

Hi diz,
This option is under Configure kernel features (for small systems). It is the last option in the menu and you can select two values. Yesterday I applied the patch in my kernel tree and it works properly.
Sent from my GT-P1000L using xda premium

AH! Btw, you must enable:
CONFIG_MMU (System type)
CONFIG_EMBEDDED (General setup)
to see the option. So, if you haven't enabled CONFIG_SWAP, than you can choose CONFIG_TINY_SHMEM, otherwise just CONFIG_SHMEM will be available.
FYI, I'm using this with tiny-shmem for 8h and nothing weird happened yet
Thanks,
Ronan

working on it now,
up to the compile part,
its a little different working with my source, than stock
quick q
how do we show users this is working or even added in their kernels?

Well, you can execute:
busybox zcat /proc/config.gz | grep SHMEM
If you see:
CONFIG_TINY_SHMEM=y
Then tiny shmem was selected and is activated.
I'll wait your results! Thanks for the help!!!!
Ronan
Sent from my GT-P1000L using xda premium

Now, when trying to compile (mine and teks way)
It says, kernel tree not clean, please run make mrproper in kernel directory.
So I do, and it erases the tiny shmem, and goes back to default p1cm7 configuration.
Lol, kernel work makes porting a rom from basecode a walk in the park!
When typing make, or make zimage, in same directory as make menuconfig, it errors and says /opt/toolchains/arm-2009q3/bin/arm-none-linux-gnueabi-gcc: Command not found
and
make
make: /opt/toolchains/arm-2009q3/bin/arm-none-linux-gnueabi-gcc: Command not found
scripts/kconfig/conf -s arch/arm/Kconfig
init/Kconfig:957:warning: choice value used outside its choice group
init/Kconfig:958:warning: defaults for choice values not supported
make: /opt/toolchains/arm-2009q3/bin/arm-none-linux-gnueabi-gcc: Command not found
CHK include/linux/version.h
UPD include/linux/version.h
CHK include/generated/utsrelease.h
UPD include/generated/utsrelease.h
Generating include/generated/mach-types.h
CC kernel/bounds.s
/bin/sh: /opt/toolchains/arm-2009q3/bin/arm-none-linux-gnueabi-gcc: not found
make[1]: *** [kernel/bounds.s] Error 127
make: *** [prepare0] Error 2
below is my .config file, zipped because xda cant load hidden files

Hi diz,
First,
kernel tree not clean, please run make mrproper in kernel directory.
It is because the kernel directory has a git repo and it is not clean. When you use 'make mrproper' it will remove the patch because it probably wasn't commited yet.
The easiest way to solve it is:
mv .git .gitold
<Compile the kernel>
mv .gitold .git
If you do this, this problem should be gone.
The second error seems that you are pointing the gcc cross-compiler to a wrong path in Makefile. Check where you installed the compiler and set it accordingly in Makefile by changing the value of this variable:
CROSS_COMPILE ?=
Hope it helps!
Thanks,
Ronan

By the way, your config file seems to be ok!

Change the tool chain prefix to arm-none-eabi- and compile (after doing the steps ron told)

SUCCESS!!!!!!!!
I've posted it here,
http://forum.xda-developers.com/showpost.php?p=19128294&postcount=2205

Good! Let's see what will happen now
Thanks!

Cyanogen 7 tiny_shmem kernel
I have decided to move the kernel here.
So as not to "invade" another's thread
This is only for unofficial beta cm7 port
* FILE SYSTEM
TINY_SHMEM enabled
* LCD Voltage
down to 260000 from 300000
* I/O scheduler default
"no-op"
type: busybox zcat /proc/config.gz | grep SHMEM
in your terminal emulator
you will see:
CONFIG_TINY_SHMEM=y
(means tiny shmem is activated."

dizgustipated said:
I have decided to move the kernel here.
So as not to "invade" another's thread
* FILE SYSTEM
TINY_SHMEM enabled
* LCD Voltage
down to 260000 from 300000
* I/O scheduler default
"no-op"
type: busybox zcat /proc/config.gz | grep SHMEM
in your terminal emulator
you will see:
CONFIG_TINY_SHMEM=y
(means tiny shmem is activated."
Click to expand...
Click to collapse
THIS KERNEL IS Making my WIFI Hotspot activate on MIUI for SGT
- I just have issue with the Mobile Network being broken?
- The touchscreen also broken but i'ved fixed that one
- usb tethering error = ive'd fixed it too
Can you do something on the mobile data being broken on the kernel side?
Because if i use angel666 zimage , cm modded, mobile data work but hotspot broken
If i use this its the other way around. Lol

[Driver] Asix AX88772 kernel module (USB Ethernet)

Hello, this is my first dev posting, so let me know if there is anything missing...
I have a Samsung Galaxy SIII S3 SGH-I747M (Bell) with Jelly Bean 4.1.1 kernel 3.0.31 (stock rooted, root66_BMC_I747MVLDLK4.7z). I also have an Asix USB LAN adapter (from monoprice) + USB OTG cable which did not work out of the box... but i am a software engineer... so I made it work. The process below should work for other carriers / modules if you find the proper kernel source. Compiling latest drivers directly from Asix is the best method... Read that part first!
Read the README that comes with your kernel source, you may need a different compiler! https://github.com/AdiPat/Android_Toolchains is where I got mine...
Details about the Asix AX88772 USB lan RJ45 adapter chipset can be found here:
http://www.asix.com.tw/products.php?op=pItemdetail&PItemID=86;71;101
You can skip to "Usage instructions" section and download pre-compiled modules, if you have identical kernel + phone
built from SGH-I747M_BMC_JB_Opensource.zip (I747MVLDLK4, my phone) + latest Asix driver, works great!!!
https://www.dropbox.com/sh/3lrhwdf2vxe5z90/Hr3-nYX4Ff
built from SGH-I747M_BMC_JB_Opensource.zip (I747MVLDLK4, my phone) stock kernel driver, 'insmod's, but 'ping' is flaky?
https://www.dropbox.com/sh/u068760ytpsn0k1/3di6Wg44ja
built from GT-I930_JB_Opensource_Update7.zip (I9300XXELLA, requested by gingerneil), stock kernel driver, works great!!!
https://www.dropbox.com/sh/5emvafthv061fp6/BKcakiOie8
built from GT-I930_JB_Opensource_Update8.zip (EMR2, requested by gingerneil), stock kernel driver, untested
https://www.dropbox.com/sh/rmc1n4yxckg01zy/a2V5hvIp20
built from Cyanogenmod 10 for i9300, git commit 43aaedbcde478c8e032771d62a1956133b29b1d4, untested
https://www.dropbox.com/sh/n1tdiap4pi2vzm8/TKAj_lChXA
built from Android 4.1.1 for Galaxy Tab 2 (GT-P5110) kernel 3.0.31-523998, contact 'patelkes' if you have questions.
https://www.dropbox.com/sh/r0zkg5do2n3lyg3/fWWyhsz2qy
built from Android 4.? for Xperia Tablet Z ROM (10.3.1.C.0.136), contact 'kristouf666' if you have questions.
https://www.dropbox.com/sh/nxqo1ipkbojakls/eDLHXJzl5s
built from Cyanogenmod 10.1.3 for SGH-i747m, git commit ?
Work in progress
Build environment setup:
-Get root access on a Ubuntu Natty (11.04) or similar linux build machine / virtual machine
-Install standard unix compiler tools
apt-get install build-essential-Install library for menuconfig
apt-get install libncurses5-dev-Install lzop (android compression util)
apt-get install lzop-Install git
apt-get install git-Download Android toolchains using git
cd /root
git clone https://github.com/AdiPat/Android_Toolchains.git-Download samsung kernel SGH-I747M_BMC_JB_Opensource.zip (international model, etc, also available)... Or download your 3rd party Cyanogenmod,etc kernel SOURCE instead.
-Extract to /root/kernel
mkdir /root/kernel
cd /root/kernel
unzip SGH-I747M_BMC_JB_Opensource.zip-Set path so Android compiler can be found
export CROSS_COMPILE=/root/Android_Toolchains/arm-eabi-4.4.3/bin/arm-eabi-**EDIT: newer kernels, such as Cyanogenmod 10.2.1, use this
export CROSS_COMPILE=/root/Android_Toolchains/arm-eabi-4.6/bin/arm-eabi-
Compiling built-in kernel modules: (left for documentation sake, the better method is "Compiling latest drivers directly from Asix")
-Generate '.config' file in kernel folder (replace 'm2_att_defconfig' with name of file in 'arch\arm\configs\')
make arch=arm m2_att_defconfig-Modify kernel config to include Asix module and usbnet module
make menuconfig
[Navigate using arrow keys and enter]
Device Drivers ->
Network device support ->
USB Network Adapters ->
Multi-Purpose USB Networking Framework ->
[PRESS SPACEBAR until an M appears on the left]
[M] Multi-purpose USB Networking Framework
[M] ASIX AX88xxx Based USB 2.0 Ethernet Adapters
For reference here is the help info for the 2 options that are now set to 'M'
-Compile modules, where 2 is the number of CPU cores you have (speeds it up)
make -j2 && make -j2 modules-Once finished, grab your modules
/root/kernel/drivers/net/usb/usbnet.ko
/root/kernel/drivers/net/usb/asix.ko
Usage instructions:
-Use a root explorer such as ES File manager
Mount /system as rw in ES File manager root settings
copy asix.ko and usbnet.ko to /system/lib/modules/-Use a terminal emulator / adb shell to load modules (asix depends on usbnet, so load usbnet first)
su
cd /system/lib/modules
insmod usbnet.ko
insmod asix.ko-If there are errors, run 'dmesg' and see section called "Insmod errors"
-If there are no errors, you should see 'eth0' in 'netcfg'
-'lsmod' lists modules loaded
-Connect your USB ethernet adapter to an ethernet network
-netcfg should show eth0 as connected
-Setup ethernet settings, if you want static address, for typical internet router at 192.168.1.1
ifconfig eth0 192.168.1.100 netmask 255.255.255.0
route add default gw 192.168.1.1 dev eth0
setprop net.dns1 192.168.1.1
ip addr show
ip route show-Setup ethernet settings, if you want automatic dhcp address
dhcpcd eth0-If you want one-click enable of your USB, see section "usbnet widget"
Insmod errors:
exec format error : wrong compiler / wrong kernel source / wrong phone
init_module failed usbnet.ko (file exists) : module already loaded or built into kernel
no such file or directory : run dmesg immediately after attempt... you are missing module dependency
can't open usbnet.ko : are you root?
usbnet widget
Install Smanager
Download my usbnet script http://pastebin.com/zQRQ6Kdj
Use a quality notepad editor such as notepad ++ to edit, ensure line endings are "Unix"
Place in /system/lib/modules/usbnet *cannot be on sdcard, as sdcard is a windows filesystem*
In terminal emulator / adb: "chmod 777 /system/lib/modules/usbnet"
Open Smanager
-Menu -> Scripts
-Menu -> Browser -> /system/lib/modules/usbnet
-Ensure "Fav", "SU" and "is executable" are checked and give it a name 'usbnet', press save.
On homescreen, add widget, Smanager, pick your script 'usbnet'
You now have 1 click access to loading the modules, setting IP address, and testing connectivity to your router.
GT-9300 differences (thanks gingerneil)
Kernel source
GT-I930_JB_Opensource_Update7.zip
While building the kernel, the make config step is different
make arch=arm m0_00_defconfig
There is a third module built,
/root/kernel/drivers/net/mii.ko
Usage instructions, new order of operations
insmod mii.ko
insmod usbnet.ko
insmod asix.ko
/system/lib/modules is not persistent on this phone, instead store modules + usbnet script
/system/media
Compiling latest drivers directly from Asix
For some reason on my phone the stock kernel asix module did not work 100%.
I could insmod both modules, and using Wireshark, I verified my computer was receiving 'ping' packets, but the phone wasn't getting any 'ping reply' packets. This latest Asix driver works perfectly for me.
UPDATE:: http://www.asix.com.tw/FrootAttach/...0_772_178_LINUX_DRIVER_v4.13.0_Source.tar.bz2 is available, but I have not tried it!
Follow "Environment setup" above
Code:
cd kernel_src_folder
Generate kernel '.config' file (replace 'm2_att_defconfig' with name of file in 'arch\arm\configs\')
Code:
make arch=arm m2_att_defconfig
Code:
mkdir /root/asix && cd /root/asix
Code:
wget http://www.asix.com.tw/FrootAttach/driver/AX88772B_772A_760_772_178_LINUX_Driver_v4.4.1_Source.zip
Code:
unzip AX88772B_772A_760_772_178_LINUX_Driver_v4.4.1_Source.zip
Code:
rm -rf Makefile
# we are replacing the Makefile with a new one.... if you edit, ensure indents = TABS
Code:
wget [url]http://pastebin.com/raw.php?i=4xLxksX3[/url] -O Makefile
Code:
CROSS_COMPILE=/root/Android_Toolchains/arm-eabi-4.4.3/bin/arm-eabi- make
**EDIT: newer kernels, such as Cyanogenmod 10.2.1, use this
Code:
CROSS_COMPILE=/root/Android_Toolchains/arm-eabi-4.6/bin/arm-eabi- make
Follow the "usage instructions" above, but since this is an "all-in-one" module, remove references to 'usbnet' 
Other informational Links
Thanks to viulian for his inspirational post here in regards to compiling external module.
If you want to compare your phone's kernel configuration to the one in the download source from Samsung, read this post:
To see the list of loadable and built-in modules, see this.
More information about compiling kernel modules / asix / other usb chipsets / other devices
Did you know that Asix now manages Moschip products? Looking for MCS7830 drivers?
Thanks to zhlvf for pointing this , there is a way to hack android to think Wifi is connected when an USB ethernet is plugged in... (solves issues in some apps, like google play / market, which ignore USB ethernet as a valid connection).
Make errors documentation
Model number and version code explanation (how to tell which samsung.opensource.com zip file to download)
https://www.kernel.org/doc/Documentation/kbuild/modules.txt
To get the active .config from a Cyanogen mod android,
Code:
adb pull /proc/config.gz

kevinf28 said:
Usage instructions:
-Use a root explorer such as ES File manager
Mount /system as rw in ES File manager root settings
copy asix.ko and usbnet.ko to /system/lib/modules/-Use a terminal emulator / adb shell to load modules (asix depends on usbnet, so load usbnet first)
su
cd /system/lib/modules
insmod usbnet.ko
insmod asix.ko-If there are errors, run 'dmesg'
-If there are no errors, you should see 'eth0' in 'netcfg'
-Connect your USB ethernet adapter to an ethernet network
-netcfg should show eth0 as connected
-Setup ethernet settings, if you want static address, for typical internet router at 192.168.1.1
ifconfig eth0 192.168.1.100 netmask 255.255.255.0
route add default gw 192.168.1.1 dev eth0
setprop net.dns1 192.168.1.1-Setup ethernet settings, if you want automatic dhcp address
dhcpd eth0
Click to expand...
Click to collapse
Hi,
I have tried to insert your modules (I have the 3.0.31 kernel on the international S3) - but I get "exec format error". This is after placing your files in right place, and running under root through terminal emulator. Any idea why I am getting this error, and how to get around it ?

gingerneil said:
Hi,
I have tried to insert your modules (I have the 3.0.31 kernel on the international S3) - but I get "exec format error". This is after placing your files in right place, and running under root through terminal emulator. Any idea why I am getting this error, and how to get around it ?
Click to expand...
Click to collapse
Unfortunately, you are not running an "identical" kernel. Linux is particularly fussy with kernel modules, it has to be a perfect match.
Android takes a generic 3.0.31 linux kernel and applies device specific patches. So my i747 3.0.31 kernel is not identical to your i9300 3.0.31.
I can build the modules for you, since I already have the environment setup. Please visit http://opensource.samsung.com/reception/receptionSub.do?method=search&searchValue=i9300 and let me know which one sounds correct..

kevinf28 said:
I can build the modules for you, since I already have the environment setup. Please visit http://opensource.samsung.com/reception/receptionSub.do?method=search&searchValue=i9300 and let me know which one sounds correct..
Click to expand...
Click to collapse
That would be fantastic - thanks. I am running the internation i9300 - so I would go with the top one -
GT-I9300_JB_Opensource_Update7.zip
But I'm not sure what may be different across the updates.
I assume that is doesnt matter which ROM I am running, and that a full Rom Manager backup would also backup my stock kernel ?

gingerneil said:
That would be fantastic - thanks. I am running the internation i9300 - so I would go with the top one -
GT-I9300_JB_Opensource_Update7.zip
But I'm not sure what may be different across the updates.
I assume that is doesnt matter which ROM I am running, and that a full Rom Manager backup would also backup my stock kernel ?
Click to expand...
Click to collapse
Kernel loadable modules are completely inert by themselves, so there is no need to worry about your phone bricking [but a backup never hurts].
If you build modules into the kernel itself on the other hand, its possible for the kernel to fail / panic / etc, so I don't plan on building any kernel packages.
Please see the OP for the 9300 modules. Hope they work! What is your full kernel version string and baseband version from "About Device" page?

kevinf28 said:
Kernel loadable modules are completely inert by themselves, so there is no need to worry about your phone bricking [but a backup never hurts].
If you build modules into the kernel itself on the other hand, its possible for the kernel to fail / panic / etc, so I don't plan on building any kernel packages.
Please see the OP for the 9300 modules. Hope they work! What is your full kernel version string and baseband version from "About Device" page?
Click to expand...
Click to collapse
It's giving a ' no such file or directory' error - even though the files are there and I'm running insmod from the dir as su. See terminal screen shot. thanks for the help!

Re: [Driver] Asix AX88772 kernel module
I updated the OP with insmod errors
It does look like GT-I9300_JB_Opensource_Update7.zip JB 4.1.2 matches your I9300XXELLA baseband version.
http://www.androidgalaxys.net/news-...gente-samsung-per-galaxy-s3-di-android-4-1-2/
http://www.androidgalaxys.net/appro...punto-esclamativo-rosso-come-nuovo-controllo/

kevinf28 said:
I updated the OP with insmod errors
It does look like GT-I9300_JB_Opensource_Update7.zip JB 4.1.2 matches your I9300XXELLA baseband version.
http://www.androidgalaxys.net/news-...gente-samsung-per-galaxy-s3-di-android-4-1-2/
http://www.androidgalaxys.net/appro...punto-esclamativo-rosso-come-nuovo-controllo/
Click to expand...
Click to collapse
Thanks - so it looks like I have some module dependancy issues. I'll take a look at dmesg and see whats going on. Seems strange though, if the zip does match everything...
Maybe I should go back to a stock ROM as I am currently running a de-odexed stock.

gingerneil said:
Thanks - so it looks like I have some module dependancy issues. I'll take a look at dmesg and see whats going on. Seems strange though, if the zip does match everything...
Maybe I should go back to a stock ROM as I am currently running a de-odexed stock.
Click to expand...
Click to collapse
It may be something trival, perhaps there is a third module you need for the international version.. I can't load your modules to test them, I get the exec format error . In regular linux, ldd is an amazing tool to list all the module deps, but unfortunately, it doesn't work for ARM, and arm-eabi-ldd does not exist in my toolchain.
[Edit: I have edited the OP, I rebuilt the modules and they do have some binary differences... give them a try as well]

Just curious... what are you using the USB-LAN adapter for with the USB-OTG?

CZ Eddie said:
Just curious... what are you using the USB-LAN adapter for with the USB-OTG?
Click to expand...
Click to collapse
Work does not allow wifi. I want to be able to download stuff without using data.

kevinf28 said:
It may be something trival, perhaps there is a third module you need for the international version.. I can't load your modules to test them, I get the exec format error . In regular linux, ldd is an amazing tool to list all the module deps, but unfortunately, it doesn't work for ARM, and arm-eabi-ldd does not exist in my toolchain.
[Edit: I have edited the OP, I rebuilt the modules and they do have some binary differences... give them a try as well]
Click to expand...
Click to collapse
Thanks - I'll give them a go. I went back to stock LLA ROM and it still didnt work.
---------- Post added at 03:24 PM ---------- Previous post was at 03:22 PM ----------
CZ Eddie said:
Just curious... what are you using the USB-LAN adapter for with the USB-OTG?
Click to expand...
Click to collapse
I'd like to use it for syncing files from my server without having to dig out my laptop to piggy back of its ethernet. Films can take an age to copy over wifi compared to LAN.

Having another go at getting the modules in. I am setting up the environment with the aim of compiling with the modules in and flashing the full kernel rather than adding via insmod....

gingerneil said:
Having another go at getting the modules in. I am setting up the environment with the aim of compiling with the modules in and flashing the full kernel rather than adding via insmod....
Click to expand...
Click to collapse
Cool. README_Kernel.txt is important, the make configure step is slightly different.

kevinf28 said:
Cool. README_Kernel.txt is important, the make configure step is slightly different.
Click to expand...
Click to collapse
OK - will see how I get on. Any tips would be great, as this will be my first attempt at compiling! The only linux based system I have it a raspberry pi connected to my TV running raspbmc. Currently seems to be running through the steps ok though.

Dmesg log attached - couldnt see how to attach on a pm!

gingerneil said:
Dmesg log attached - couldnt see how to attach on a pm!
Click to expand...
Click to collapse
Easy one, you are missing the 'mii' module,
<4>[ 3929.962119] c1 usbnet: Unknown symbol mii_nway_restart (err 0)
<4>[ 3929.962173] c1 usbnet: Unknown symbol mii_link_ok (err 0)
<4>[ 3929.962225] c1 usbnet: Unknown symbol mii_ethtool_sset (err 0)
<4>[ 3929.962270] c1 usbnet: Unknown symbol mii_ethtool_gset (err 0)
The pastebin link http://pastebin.com/wNaBWvZG references "Selects: MII [=m]"
On my phone, it didn't complain about mii, so i didn't think it was needed
https://www.dropbox.com/sh/5emvafthv061fp6/BKcakiOie8 has mii.ko, so load that first, then usbnet, then asix.
I also updated the OP to include a usbnet widget for one click module loading... that script would have to be modified to include insmod mii.ko

kevinf28 said:
Easy one, you are missing the 'mii' module,
<4>[ 3929.962119] c1 usbnet: Unknown symbol mii_nway_restart (err 0)
<4>[ 3929.962173] c1 usbnet: Unknown symbol mii_link_ok (err 0)
<4>[ 3929.962225] c1 usbnet: Unknown symbol mii_ethtool_sset (err 0)
<4>[ 3929.962270] c1 usbnet: Unknown symbol mii_ethtool_gset (err 0)
The pastebin link http://pastebin.com/wNaBWvZG references "Selects: MII [=m]"
On my phone, it didn't complain about mii, so i didn't think it was needed
https://www.dropbox.com/sh/5emvafthv061fp6/BKcakiOie8 has mii.ko, so load that first, then usbnet, then asix.
I also updated the OP to include a usbnet widget for one click module loading... that script would have to be modified to include insmod mii.ko
Click to expand...
Click to collapse
Fantastic - mods loaded, will test when I get home. Thanks too for the widget script!

Mods loaded and ethernet up and running - brilliant!
Only one issue now - I can't get the script to persist after a reboot unless it's somewhere like /sdcard0/download or on the extsdcard. It just gets deleted. I then can't get it to execute from there as I can't change the permission. Need to keep fiddling to find something that works. Minor issue tho!

Do the mods persist in /system/lib/modules ?
What about /data? That is your sdcard as ext4.
If all else fails...have you tried remounting /system as read only to force writes to disk? (Cache issue)
Sent from my SGH-I747M using xda app-developers app

[dev][kernel][kexec]

Last Update : August, 19, 2014
Hi,
I'm still try to bypass the MMU protection.
I have fixe a lot of bug, like memory misalignment, bad adresses allocation, dtb correction, etc...
Last sources and binaries here :
kexec-tools V11.zip : http://forum.xda-developers.com/attachment.php?attachmentid=2902912&stc=1&d=1408401794
kexec-tools binaries V11.zip : http://forum.xda-developers.com/attachment.php?attachmentid=2902913&stc=1&d=1408401794
Sorry, i have always 13 sec reboot after new kernel boot.
"cpu_proc_fin" use a "mcr p15" to init cache and proc that cause freeze.
I try to find solution for that.
Last Update : June, 22, 2014
Hi,
My sources are horrible... but i give something new.
This kexec is for stock kernel only (tested on .757). I thinks theses sources work on other kernel too.
In "kexec-tools V10.zip", you have all my sources. It's highly recommended to mod them to have something OK.
In "kexec binaries.zip", you have binaries to install
=> "kexec_load.ko" and "procfs_rw.ko" must be placed in "/system/lib/modules" folder with "chmod 777"
=> "kexec" must be placed in /system/bin" folder with "chmod 777"
=> cd /system/lib/modules
=> insmod kexec_load.ko
For sources :
Mod and adapt all you want, it's free.
You have 2 scripts in Zip : "./compil-kexec" in "kexec-tools" folder to rebuild and send in device directly (install Adbtcp on device and send by tcp with : adb connect xxx.xxx.xxx.xxx) = work perfectly with me.
"scriptZ1" is for compil stock kernel or another kernel (doomlord kernel for eg)
You must rename "custom_final_files" folder after compil to "final_file" manually ; You can have guest kernel in "custom_final_files" and stock kernel in "final_files" for "kexec-tools" path ... Don't mix a guest and host kernel please ^^
I am tired... i let you test and say if it's ok for you...
Thank a lot to munjeni for his help.
kexec-tools V10.zip : http://forum.xda-developers.com/attachment.php?attachmentid=2811994&stc=1&d=1403456181
kexec binaries.zip : http://forum.xda-developers.com/attachment.php?attachmentid=2811995&stc=1&d=1403456181
Last Update : November, 23, 2013
Hi,
For few days now, i haven't no more kernel panic with my kexec.
I have fixed few stuffs into sources, and add a lot.
These adds are, to include a "dt.img" image file into kexec load process.
This image file is a "device_tree" image to match hardware to software.
So, i assume to don't include atags into boot process, but pass bootloader informations by this DT.
I have programmed a little scan memory to found dynamicly all magic tags, because i found 3 device_tree into memory (magic is "0xd00dfeed").
These 2 device_tree are echo from first and nice structure.
The boot process need to have informations from this DT, and need all informations to initialize hardware (no HDW initialisation by the kernel)
I must first fix issues ; Regroup zImage and dt.img into memory to load a solid bloc to kexec_load module to boot into, and second, fix an offset i can't explain, 0x800 in memory causing misalignment memory
Keep tuned..
Last Update : November, 17, 2013
Hi everybody,
My kexec-tools work for Sony Xperia Z1 stock kernel "3.4.0-perf"
This tools can work on all locked bootloader for all locked device, not only Sony or Z1 models.
This kexec-tools add a kexec_load kernel module (LKM) and use a driver to grant a communication between "kexec" user program and kexec_load.ko module
what is for ?
"kexec" user program load in memory a custom kernel in zImage format, but can load ".tar" image too
This user tool load ramdisk in memory if necessary
This tool is for this purpose only, and don't keep in memory the custom kernel at device reboot.
It is a "user" program, not a "kernel" extension... So, to really do the magic, we need the host kernel (stock sony locked kernel) have a kexec_load capability to reboot in a new gest kernel (custom kernel).
Infortuntly, stock kernel don't have kexec_load capability.
Sony have compiled his stock kernel without this option, and "standard" kexec-tools "need" this option to work.
To see all system call capability of kernel, you can run theses command :
Code:
echo 0 > /proc/sys/kernel/dmesg_restrict
echo 0 > /proc/sys/kernel/kptr_restrict
cat /proc/kallsyms
Do all grep you want here.
The "echo 0" "restrict" is here to unmask logical adresses to "system calls"
Like you can see, "__NR_kexec_load" capability isn't here.
To add kexec_load capability in stock locked kernel, we need to add manualy a kernel module wich add this function into the kernel.
Why ? Because the way to keep in memory a custom kernel need to know a lot of parameters, and keep a specific memory range alive at reboot.
Only kernel can do this.
All user program will be terminated at reboot.
"Standard" kexec_load.ko module use a method to implement the "__NR_kexec_load" function in system call table.
Since 2.6.0 kernel, linux for security reason, have locked in memory the "system_call_table" ; No more add or modification is authorized.
If kexec tool try to add a value, "kexec_load" for us, we causes a kernel panic, and reboot device.
For this reason, i have modify kexec user program and kexec_load module to implement a driver to talk to each other.
this driver replace syscall method, and we no more need to use a system call table.
For this reason, this tool is now compatible with modern kernel like our "3.4.0"
For this reason, this tool must work for other device (Xperia X, P, S, etc...) and another brand
For this reason, if kernel is locked, we can bootstrap to run a new kernel.
Installation
First, you can compil your own kexec tool
Here, sources : http://forum.xda-developers.com/attachment.php?attachmentid=2397299&stc=1&d=1384689174
And here, the binaries : http://forum.xda-developers.com/attachment.php?attachmentid=2397305&stc=1&d=1384689406
(it's not a cwm zip, i have no time to create an installer for now ; use "./compil-kexec" if you want an automatic install)
Install *.ko in /system/lib/modules
Install kexec and kdump in /system/bin
Grant with "chmod 777"
Unzip in kexec-tools folder
Install a toolchain (sudo apt-get install gcc-arm-linux-gnueabi)
launch => ./compil-kexec
what's all
This script can do everythinks for you
- Compilation of tools
- Compilation of modules
- installation in device
This script can compil for every brand you have.
Except you must remove or adapt the patch (see below why)
Patch ??
This patch is because a module must be compiled in the same time the kernel himself.
For this reason a "vermagic", an identifier, is used by system to block every module not compil with kernel
Some custom kernel bypass this to authorize every modules.
But for stock kernel, it is not allowed.
You can easely strapp this by busybox.
"busybox modprobe" for help
"-f" to force load without vermagic
To see this vermagic :
Code:
# uname -r
This "uname -r" must be the same that
Code:
# strings kexec_load.ko | grep vermagic
vermagic=3.4.0-perf-g66807d4-02450-g9a218f1 SMP preempt mod_unload modversions ARMv7
If you want use automaticaly this vermagic, you can modify into the custom kernel this file :
Code:
"include/config/kernel.release" and add :
"3.4.0-perf-g66807d4-02450-g9a218f1"
This file will be use at module compil to match the vermagic.
Infortunatly, it is not enought. :silly:
The infamous "no symbol version for module_layout"
When a module compil is created, it use symbols link to system call function, translate by adresses
Theses symbols are not at same physical adresses in stock kernel and modules (compiled from DooMLoRD kernel).
So, theses adresses must be convert into modules itself to match with stock symbols adress.
A patch is needed.
If you use my script, modules are automatically patched.
Here patches :
Code:
sed -i 's/\x32\x76\x86\x29/\x72\xFF\x5E\x20/' procfs_rw.ko
sed -i 's/\x32\x76\x86\x29/\x72\xFF\x5E\x20/' kexec_load.ko
sed -i 's/\xBB\xD0\xF8\x4D/\x0E\x1C\x63\x77/' kexec_load.ko
sed -i 's/\xA6\x26\x81\x1A/\xD4\x56\x02\x7E/' kexec_load.ko
sed -i 's/\xA3\xD1\xEC\x96/\xEC\x43\x28\x1A/' kexec_load.ko
sed -i 's/\x8C\xE6\x6A\x5F/\x3D\xDF\x02\xF2/' kexec_load.ko
sed -i 's/\x3E\xF3\xEF\xE9/\x18\x7F\xA6\x8A/' kexec_load.ko
sed -i 's/\x8B\xD2\x92\x10/\xC8\x19\x08\x9C/' kexec_load.ko
sed -i 's/\x1C\xE8\x18\xE1/\x7C\x71\x9E\xEF/' kexec_load.ko
sed -i 's/\xAB\x2C\x2F\x8B/\x8E\xD7\x63\xC0/' kexec_load.ko
sed -i 's/\xF5\x62\xAA\x4B/\x34\x80\x1B\x74/' kexec_load.ko
sed -i 's/\x00\x52\xD6\xD7/\x6F\x80\x91\x20/' kexec_load.ko
sed -i 's/\x4F\x77\x57\x6A/\x0C\x57\xC7\x63/' kexec_load.ko
sed -i 's/\xCA\x2F\x65\x71/\x92\xB8\x7F\x53/' kexec_load.ko
sed -i 's/\x0F\xD0\xA0\x91/\xFA\x80\x15\xB4/' kexec_load.ko
sed -i 's/\x29\xA0\x6D\x48/\x6C\x6B\x96\x54/' kexec_load.ko
sed -i 's/\x6D\x1F\x1F\x37/\xCC\x5E\x79\x8B/' kexec_load.ko
sed -i 's/\xFD\x23\xD0\xFB/\xE3\xE3\x68\x52/' kexec_load.ko
You can use hexedit or hexdump to see these adresses :
Code:
hexdump kexec_load.ko | grep ff72
0003d50 b0b0 80ac ff72 205e 6f6d 7564 656c 6c5f
how does it work ?
# kexec --help
For kexec help... nothing more to say.
# lsmod
List loaded modules... You must see
kexec_load 31369 0 - Live 0x00000000 (O)
# rmmod kexec_load.ko
Remove kexec_load module from memory.
# grep kexec /proc/device
To see installed driver.
You must see :
100 kexec_driver
First number is "major" number to identify your driver in system.
# mknod /dev/kexec_driver c 100 0
Install driver.
Major number (here 100), is important for module.
This Major must be the same between module and driver.
By default, 100 is used.
# insmod kexec_load.ko
To install "LKM", kexec_load kernel module.
If another Major is needed, you can use "insmod kexec_load.ko 101" for Major 101
You can use "modprob" if you want, but you must configure the module folder.
How kexec and module exchange informations ?
By the driver.
Normal output for a kernel module is to write in "dmsg" file.
To see kernel output, launch this command :
Code:
# dmesg
To see last kernel log, see in :
Code:
# cat /proc/last_kmsg
For kexec module, this normal way still exist, and give a lot of informations, but to speak with, you must use the driver.
/dev/kexec_driver
You can yourself test communication:
Code:
# cat /dev/kexec_driver
You can send kernel by this communication channel.
Type following commands for help
=> echo help >/dev/kexec_driver
=> dmesg | grep Kexec
Code:
# echo help >/dev/kexec_driver
# cat /dev/kexec_driver
Last command : 'help'
Please type following command :
=> dmesg|grep Kexec
Every command send into driver is receive by kexec_load.ko module and running into the kernel.
The answer can by read thru the driver
Here, you can see that normal way to see messages is allway dmesg.
Code:
# dmesg|grep Kexec
<4>[15050.521628] Kexec: Starting kexec_module...
<6>[15050.521656] Kexec: kexec_driver_contener allocation
<6>[15050.521673] Kexec: kexec_memory_buffer allocation
<4>[15050.521691] Kexec:----------------------------------------------------
<4>[15050.521710] Kexec: kexec_driver created with major : '100'
<4>[15050.521728] Kexec: Please, prepare by typing the following commands :
<4>[15050.521746] Kexec: => mknod /dev/kexec_driver c 100 0
<4>[15050.521761] Kexec: => cat /dev/kexec_driver
<4>[15050.521775] Kexec:-----------------------------------------------------
<4>[15050.521791] Kexec: For help
<4>[15050.521803] Kexec: => echo help >/dev/kexec_driver
(...)
I have add a lot of informations to help to configure kexec.
rdtags, atags ??
Not sure for this part of kernel.
"atags" is the most used method to bootloader to parse commands and informations to kernel at boot.
"atags" is a form of structure in memory to organise informations.
At boot, a address chain is created and can be compulse in /proc/atags file.
This file is read only system.
"rdtags" is another way to bootloader to parse information to kernel.
"rdtags" is not stocked in "/proc"
But, as i see, stock kernel can use "atags" from bootloader.
kexec can substitute bootloader function to create fromscratch a atags chain, and parse to new kernel.
I have change this part to stock atags in "/data/atags", and reuse or change if need.
If this don't work, i must create a rdtags chain to replace atags ; It's not a hard work.
Status
For the moment, kexec tools works.
=> Phase one OK.
I can start Phase Two : new kernel patch.
If you want to help me...
Actually, load a custom kernel and boot into with kexec tools work.
But at boot into, a kernel panic occurs.
It seems, a part of kexec patch is missing in custom kernel.

Hi new thread created for kernel kexec development.
Status: not working: wrong values for mem defines under the kernel is giving segmentation fault as its attempting to write to memory areas that are currently being used byyyyy the system
Instructions:
Make kernel compatible?:
1. Download kernel diff patch from below
2. Terminal - diff patch > diff.txt
How to use:
1. Download kexec-tools (kexec binary) from below
2. Copy into system/bin directory and give it executable permission
3. Download compatible kernel
4. Terminal - kexec --load-hardboot zImage --initrd=initrd.img --mem-min=0x20000000 --command-line="$(cat /proc/cmdline)"
kexec -e
Download links:
Kexec tool- https://db.tt/8DZXQ9eV
Ramdisk firmware 1.548 : https://db.tt/8DZXQ9eV
zImage (kernel):
Source code:
Kernel diff patch: https://db.tt/Xi2htT7Q (currently contains wrong values for mem defines)
Kexec-tools: https://db.tt/I22ofr3b
Special thanks: @delewer @krabappel2548

Reserved

Please move this thread to Xda Devdb, then I can also edit first post etc if I find new stuff
Sent from my C6903 using xda app-developers app

krabappel2548 said:
Please move this thread to Xda Devdb, then I can also edit first post etc if I find new stuff
Sent from my C6903 using xda app-developers app
Click to expand...
Click to collapse
Devdb?
Pm me i dont know what Devdb is lol

Recieved segmentation fault with delewers calculated mem values too
We need to write to memory where we have write access to, maybe lockedbootloader is not allowing us to write? Orrr we are just writing to wrong area of memory

If kexec works on the Z1, can it be ported over to Xperia Z/ZL/T/Ultra? I believe they don't all share the same processor.

Shaky156 said:
Devdb?
Pm me i dont know what Devdb is lol
Click to expand...
Click to collapse
Shaky156 said:
Recieved segmentation fault with delewers calculated mem values too
We need to write to memory where we have write access to, maybe lockedbootloader is not allowing us to write? Orrr we are just writing to wrong area of memory
Click to expand...
Click to collapse
I'll discuss with Kali- today if he's available.
Knucklessg1 said:
If kexec works on the Z1, can it be ported over to Xperia Z/ZL/T/Ultra? I believe they don't all share the same processor.
Click to expand...
Click to collapse
Doesn't need to be same processor, can be ported
Sent from my C6903 using xda app-developers app

Knucklessg1 said:
If kexec works on the Z1, can it be ported over to Xperia Z/ZL/T/Ultra? I believe they don't all share the same processor.
Click to expand...
Click to collapse
Yes it wont matter much, since its not s800 it should be easier for you guys , take the kexec-tool use that, implement the patch write to the correct mem addresses which is free, it should boot if you guys have issues let me know,
I need to calculate the correct addresses.
Ive noticed s800 uses a dt.img, might need to modify kexec-tool to support dt.img, not sure what dt.img does yet, only know it holds values

Shaky156 said:
I need to calculate the correct addresses.
Ive noticed s800 uses a dt.img, might need to modify kexec-tool to support dt.img, not sure what dt.img does yet, only know it holds values
Click to expand...
Click to collapse
the dt.img is needed by the kernel to boot, so I guess we need to load that too in kexec.
EDIT: people that wanna try add kexec patch to their kernel, check github: android_kernel_sony_msm8974/commits/kexec

krabappel2548, i have compil your kernel by my script (fromscratch)
My script (instruction in "DoomLord Build kernel thread" : scriptZ1 http://forum.xda-developers.com/attachment.php?attachmentid=2346163&d=1382568778
(for thoses who want to help us...)
You have a little mod to do here (bad compil) :
In "sound/soc/msm/qdsp6v2/rtac.c"
you must change
#include <q6voice.h>
by
#include "q6voice.h"
btw : no more ideas to load kexec for the moment ...

delewer said:
krabappel2548, i have compil your kernel by my script (fromscratch)
My script (instruction in "DoomLord Build kernel thread" : scriptZ1 http://forum.xda-developers.com/attachment.php?attachmentid=2346163&d=1382568778
(for thoses who want to help us...)
You have a little mod to do here (bad compil) :
In "sound/soc/msm/qdsp6v2/rtac.c"
you must change
#include <q6voice.h>
by
#include "q6voice.h"
btw : no more ideas to load kexec for the moment ...
Click to expand...
Click to collapse
Sorry, I'm trying to get caught up on the forum, but what seems to be the current standing issue to get kexec working?

Knucklessg1 said:
Sorry, I'm trying to get caught up on the forum, but what seems to be the current standing issue to get kexec working?
Click to expand...
Click to collapse
Read the OP
Status paragraph

Memory regions
00000000-07afffff : System RAM
00008000-00b79383 : Kernel code
00d04000-00f0cddb : Kernel data
0ff00000-779fffff : System RAM
7ff00000-7ff3ffff : rdtags_mem
7ff80000-7ffa0fff : last_kmsg
7ffa1000-7ffa5fff : last_amsslog
System RAM MEM = 00000000
So --min-mem=0x20000000
Now need to find a free memory area thatll allow us to write and hopefully the mmu/pmu on locked bootloader wont cancel it
@delewer? @DooMLoRD @kali @Bin4ry

I know I shouldn't disturb, but i must ask: if You achieve Your goal, would it be possible to port it to devices like Xperia P, S, T, U and other NXT? It would be great, many ppl are ready to give a prize for it. Thanks in advance, good luck and sorry again.
Sent from my LT22i using xda app-developers app

king960 said:
I know I shouldn't disturb, but i must ask: if You achieve Your goal, would it be possible to port it to devices like Xperia P, S, T, U and other NXT? It would be great, many ppl are ready to give a prize for it. Thanks in advance, good luck and sorry again.
Sent from my LT22i using xda app-developers app
Click to expand...
Click to collapse
These devices are not 2013 devices, they arent s800 socs, so they are much easier to do, simply take the kexec-tools from op, implement the patch in your kernel, write the correct memory values for your specific device and execute in terminal via the command in op, minmem depends on your device too, good luck

I think some1 tried it already, but it works only for unlocked devices... Anyway, thanks for help.
Sent from my LT22i using xda app-developers app

king960 said:
I know I shouldn't disturb, but i must ask: if You achieve Your goal, would it be possible to port it to devices like Xperia P, S, T, U and other NXT? It would be great, many ppl are ready to give a prize for it. Thanks in advance, good luck and sorry again.
Sent from my LT22i using xda app-developers app
Click to expand...
Click to collapse
Does doing this require having an Unlocked Boot loader prior to implementation?
Sent from my C6603 using xda app-developers app

A few informations about kexec-tools debug
in kexec.c
Fonction :
if (file_type.load(argc, argv, kernel_buf,
kernel_size, &info) < 0) {
fprintf(stderr, "Cannot load %s\n", kernel);
return -1;
}
With a forced execution of kexec (bypass error to see...)
--mem-min=0x90000000
kernel: 0xb6b9d008 kernel_size: 3e9340
debug: 1 - after get memory range
debug: 2 - after type test
debug: 3 - after type test
debug: 4 - after info.kexec
debug: Focus 1 - argc '5' ; argv 'be856774' ; kernel_buf 'b6b9d008' ; kernel_size '3e9340' ; info 'be856548' ; i '1' ; file_type.name 'zImage'
Could not find a free area of memory of 3f1340 bytes...
Cannot load zImage
debug: 10 - before trampoline
debug: 11 - after trampoline
debug: 12 - before segment load
debug: 13 - after segment load
debug: 8 - before sort_segment
debug: 9 - after sort_segment
debug: 6 - before purgatory
debug: 7 - after purgatory
kexec_load: entry = (nil) flags = 280004
nr_segments = 0
kexec_load failed: Function not implemented
entry = (nil) flags = 280004
nr_segments = 0
debug: 5 - return result : ffffffff
With a forced bypass on file_type.load , we have this :
--mem-min=0x20000000
debug: Focus 1 - argc '5' ; argv 'bef18774' ; kernel_buf 'b6bc7008' ; kernel_size '3e9340' ; info 'bef18548' ; i '1' ; file_type.name 'zImage'
Segmentation fault

delewer said:
A few informations about kexec-tools debug
in kexec.c
Fonction :
if (file_type.load(argc, argv, kernel_buf,
kernel_size, &info) < 0) {
fprintf(stderr, "Cannot load %s\n", kernel);
return -1;
}
With a forced execution of kexec (bypass error to see...)
--mem-min=0x90000000
kernel: 0xb6b9d008 kernel_size: 3e9340
debug: 1 - after get memory range
debug: 2 - after type test
debug: 3 - after type test
debug: 4 - after info.kexec
debug: Focus 1 - argc '5' ; argv 'be856774' ; kernel_buf 'b6b9d008' ; kernel_size '3e9340' ; info 'be856548' ; i '1' ; file_type.name 'zImage'
Could not find a free area of memory of 3f1340 bytes...
Cannot load zImage
debug: 10 - before trampoline
debug: 11 - after trampoline
debug: 12 - before segment load
debug: 13 - after segment load
debug: 8 - before sort_segment
debug: 9 - after sort_segment
debug: 6 - before purgatory
debug: 7 - after purgatory
kexec_load: entry = (nil) flags = 280004
nr_segments = 0
kexec_load failed: Function not implemented
entry = (nil) flags = 280004
nr_segments = 0
debug: 5 - return result : ffffffff
With a forced bypass on file_type.load , we have this :
--mem-min=0x20000000
debug: Focus 1 - argc '5' ; argv 'bef18774' ; kernel_buf 'b6bc7008' ; kernel_size '3e9340' ; info 'bef18548' ; i '1' ; file_type.name 'zImage'
Segmentation fault
Click to expand...
Click to collapse
Did you compile this kexec yourself? Or did you get this from krapabbel? I issued krapabbel to compile a new debug version have gave him the code but never heard back from him :/
Anywayz so cannot find free memory is the issue

Fixing stock kernel sources for H30-U10

Github repo: https://github.com/kernel-killer/android_kernel_huawei_h30u10
All changes I made since last commit are in my private repo.

Install packages (Not sure if it's right):
Code:
sudo apt-get install build-essential
Note: Please run ./mk ckeck-env to verify your build enviroment (Newer GNU MAKE will fail but the code compiles the same with new or older version)
Build:
Code:
./mk bm_new k
Testing your new kernel:
Download both attachments (KernelSwapper and BootimgRestore).
Append headers from stock kernel to zImage (which can be found at ./out/target/product/huawei82_cwet_kk/obj/KERNEL_OBJ/arch/arm/boot/zImage)
In KernelSwapper update 'kernel' with your own generated zImage rename it to 'kernel' and replace it inside zip.
In BootimgRestore replace 'boot.img' with your current ROM's boot.img in case that something goes wrong (e.g.: Phone not booting).
Copy the two new zips into phone's memory (or SD card) and flash KernelSwapper.

===== Reserved #1 =====

Thanks for the awesome work KK. I am on CM 13 3.4.67 kernel. Can i use this or do i have to be in stock rom for testing the kernal?
Sent from my Honor 3C using Tapatalk
---------- Post added at 06:12 AM ---------- Previous post was at 06:02 AM ----------
Update : Flashed the kernel, phone booted but felt laggish while using. I am still testing, will let you know what happens
Sent from my Honor 3C using Tapatalk

karkeankit said:
Thanks for the awesome work KK. I am on CM 13 3.4.67 kernel. Can i use this or do i have to be in stock rom for testing the kernal?
Sent from my Honor 3C using Tapatalk
---------- Post added at 06:12 AM ---------- Previous post was at 06:02 AM ----------
Update : Flashed the kernel, phone booted but felt laggish while using. I am still testing, will let you know what happens
Sent from my Honor 3C using Tapatalk
Click to expand...
Click to collapse
Yes, I'm sure that the kernel has multiple bugs. The phone may feel laggish because there is enabled low-level kernel debugging over UART.
Thank you for testing...

kernel.killer said:
Yes, I'm sure that the kernel has multiple bugs. The phone may feel laggish because there is enabled low-level kernel debugging over UART.
Thank you for testing...
Click to expand...
Click to collapse
You are welcome, wishint you good luck for further development
Sent from my Honor 3C using Tapatalk

Hi, tnx for The kernel
if i Update my kernel VPN bug in CM12.1 will fix?

hamadk said:
Hi, tnx for The kernel
if i Update my kernel VPN bug in CM12.1 will fix?
Click to expand...
Click to collapse
Nope, it's ROM bug not a kernel bug plus I have released only development preview version which has enabled many debugging options and it may be quite buggy.

Thanks, but can this process led to a suitable kernel for CM13?

Does this kernel fixes the video playback problem and the recording problem?(Can't play or capture 720p videos, screen recorder works fine, just the camera.)
Sent from my Huawei Honor 3C using XDA Labs

Lumpbloom7 said:
Does this kernel fixes the video playback problem and the recording problem?(Can't play or capture 720p videos, screen recorder works fine, just the camera.)
Sent from my Huawei Honor 3C using XDA Labs
Click to expand...
Click to collapse
http://forum.xda-developers.com/showpost.php?p=67848925&postcount=8

mhxygh said:
Thanks, but can it this process led to a suitable kernel for CM13?
Click to expand...
Click to collapse
Aim of this project is to make stock kernel sources stable for KitKat ROMs (It is originally for KK) but somebody else may patch them for CM 13. I am not working on this nor I'll do.

Will you be adding extra CPU governors and IO schedulers along with kernel level wakeups for double tap waking?

I was wondering who else is developing kernel 3.10.XX for this device ?

Ms_Julia said:
I was wondering who else is developing kernel 3.10.XX for this device ?
Click to expand...
Click to collapse
Actually, nobody is working on 3.10.X kernel. And I'm rather focusing on LineageOS for now.

What is the defconf for our device in kernel source

imranpopz said:
What is the defconf for our device in kernel source
Click to expand...
Click to collapse
This should include most configs
Code:
/* Mediatek common */
./mediatek/config/common/autoconfig/kconfig/AEE
./mediatek/config/common/autoconfig/kconfig/USER
./mediatek/config/common/ProjectConfig.mk
/* MT6582 common */
./mediatek/config/mt6582/autoconfig/kconfig/platform
./mediatek/config/mt6582/ProjectConfig.mk
/* h30u10 device specific */
./mediatek/config/huawei82_cwet_kk/autoconfig/kconfig/project
./mediatek/config/huawei82_cwet_kk/ProjectConfig.mk

kernel.killer said:
This should include most configs
Code:
/* Mediatek common */
./mediatek/config/common/autoconfig/kconfig/AEE
./mediatek/config/common/autoconfig/kconfig/USER
./mediatek/config/common/ProjectConfig.mk
/* MT6582 common */
./mediatek/config/mt6582/autoconfig/kconfig/platform
./mediatek/config/mt6582/ProjectConfig.mk
/* h30u10 device specific */
./mediatek/config/huawei82_cwet_kk/autoconfig/kconfig/project
./mediatek/config/huawei82_cwet_kk/ProjectConfig.mk
Click to expand...
Click to collapse
Replace Device Name with the configuration file found at:
Source/arch/arm/configs
It's written in this way something_DeviceCodename_user_defconfig
I need for the above step.. ☝☝☝

imranpopz said:
Replace Device Name with the configuration file found at:
Source/arch/arm/configs
It's written in this way something_DeviceCodename_user_defconfig
I need for the above step.. ☝☝☝
Click to expand...
Click to collapse
Well... This is Mediatek, DO NOT expect the sources to look nice. The configs are scattered through ./mediatek subdirectories, *.mk files are parsed and configs are assembled during build. Unfortunatelly, even if you manually assemble .config you will NOT be able to build the kernel. It is full of dirty hacks (Mediatek) and just typing "make" won't work, build will break.
Build:
Code:
$ git clone https://github.com/kernel-killer/android_kernel_huawei_h30u10.git
$ cd android_kernel_huawei_h30u10
$ export ARCH=arm && export ARCH_MTK_PLATFORM=mt6582 && export TARGET_PRODUCT=huawei82_cwet_kk
$ export CROSS_COMPILE=/path-to-your-toolchain/.../bin/arm-linux-androideabi-
$ ./mk n k
Code:
$ ./mk -h
Usage: (makeMtk|mk) [options] project actions [modules]
Options:
-t, -tee : Print log information on the standard-out.
-o, -opt=bypass_argument_to_make
: Pass extra arguments to make.
-h, -help : Print this message and exit.
Projects:
one of available projects.
Actions:
listp, listproject
: List all available projects.
check-env : Check if build environment is ready.
check-dep : Check feature dependency.
n, new : Clean and perform a full build.
c, clean : Clean the immediate files(such as, objects, libraries etc.).
r, remake : Rebuild(target will be updated if any dependency updats).
mrproper : Remove all generated files + config + various backup files in Kbuild process.
bm_new : "new" + GNU make's "-k"(keep going when encounter error) feature.
bm_remake : "remake" + GNU make's "-k"(keep going when encounter error) feature.
mm : Build module through Android native command "mm"
mma : Build module through Android native command "mma"
emigen : Generate EMI setting source code.
nandgen : Generate supported NAND flash device list.
codegen : Generate trace DB(for META/Cather etc. tools used).
drvgen : Generate driver customization source.
custgen : Generate customization source.
javaoptgen : Generate the global java options.
ptgen : Generate partition setting header & scatter file.
bindergen : Generate binder related information
sign-image : Sign all the image generated.
encrypt-image : Encrypt all the image generated.
update-api : Android default build action
(be executed if system setting or anything removed from API).
check-modem : Check modem image consistency.
upadte-modem : Update modem image located in system.img.
modem-info : Show modem version
gen-relkey : Generate releasekey for application signing.
check-appres : Check unused application resource.
sdk : Build sdk package.
win_sdk : Build sdk package with a few Windows tools.
banyan_addon : Build MTK sdk addon.
banyan_addon_x86 :Build MTK sdk x86 addon.
cts : Build cts package.
bootimage : Build boot image(boot.img).
cacheimage : Build cache image(cache.img).
systemimage : Build system image(system.img).
snod : Build system image without dependency.
(that is, ONLY pack the system image, NOT checking its dependencies.)
recoveryimage : Build recovery image(recovery.img).
secroimage : Build secro image(secro.img).
factoryimage : Build factory image(factory.img).
userdataimage : Build userdata image(userdata.img).
userdataimage-nodeps
: Build userdata image without dependency.
(that is, ONLY pack the userdata image, NOT checking its dependencies.)
dump-products : Dump products related configuration(PRODUCT_PACKAGE,PRODUCT_NAME ect.)
target-files-package
: Build the target files package.
(A zip of the directories that map to the target filesystem.
This zip can be used to create an OTA package or filesystem image
as a post-build step.)
updatepackage : Build the update package.
dist : Build distribution package.
Modules:
pl, preloader : Specify to build preloader.
lk : Specify to build little kernel.
md32 : Specify to build DSP md32.
tz, trustzone : Specify to build trusted execution environment.
k, kernel : Specify to build kernel.
dr, android : Specify to build android.
NULL : Specify to build all components/modules in default.
k <module path>
: Specify to build kernel component/module with the source path.
dr <module name>
: Specify to build android component/module with module name.
Other tools:
prebuilts/misc/linux-x86/ccache/ccache -M 10G
: Set CCACHE pool size to 10GB
Example:
./mk -t e1k emigen
: Generate EMI setting source code.
./mk -o=TARGET_BUILD_VARIANT=user e1k n
: Start a user mode full build.
./mk listp : List all available projects.
./mk e1k bootimage
: Build bootimage for e1k project.
./mk e1k bm_new k
: Build kernel for e1k project.
./makeMtk e1k c,bm_remake pl k
: Clean & Build preloader and kernel for e1k project.
./makeMtk e1k n k kernel/xxx/xxx
: Build(full build) kernel component/module
under the path "kernel/xxx/xxx" for e1k project.
./makeMtk e1k r dr Gallery
: Rebuild android module named Gallery for e1k project.
./makeMtk e1k mm packages/apps/Settings
: Change Directory to packages/apps/Settings and execute "mm"
./makeMtk e1k mma packages/apps/Settings
: Change Directory to packages/apps/Settings and execute "mma"
Edit:
I fixed the sources, so menuconfig can be used.
Apply patch:
Code:
$ git am 0001-Fix-build-using-make-command.patch
Build:
Code:
$ cd kernel && export ARCH=arm && export ARCH_MTK_PLATFORM=mt6582 && export TARGET_PRODUCT=huawei82_cwet_kk
$ export CROSS_COMPILE=/path-to-your-toolchain/.../bin/arm-linux-androideabi-
$ make -C $(pwd) O=output h30u10_defconfig menuconfig
$ make -C $(pwd) O=output
Append MTK headers:
Code:
$ ../mediatek/build/tools/mkimage output/arch/arm/boot/zImage KERNEL > output/zImage
*Note: I recommend using AOSP arm-linux-androideabi-4.9 toolchain.

Getting cp: cannot stat 'out/target/product/huawei82_cwet_kk_kernel.log
Make [1]: [kernel ] error 1
Make: *** [remake] error 2

Develop Bugs

welcome