4.9 Kernel

[Deleted member 2357893]

4.9 was released and Nexus 5 it's support by mainline kernel

http://www.phoronix.com/scan.php?page=news_item&px=Linux-4.9-ARM-Pull

 

[krusic22]

Interesting. This might bring development back to the phone. Also 4.8 and 4.9 have some amazing features and speed improvements.

 

[santi1993]

Will any dev merge and update our kernel? will this function with our android latest version?

 

[Mr.FREE_Bird]

Will any dev merge and update our kernel? will this function with our android latest version?

No, it's probably not even functional in many aspects, there will be a lot of patching/fixing needed to get it to work.
There is already been discussed about his.

 

[Deleted member 2357893]

Yes, it's impossible use 4.9 without patch related to panel, exc exc

 

[TheReduxPL]

So what does exactly the "Nexus 5 support" on this kernel mean if you can't run Android on it without patching? Would it potentially help running Linux distros on our devices or?

 

[moriel5]

So what does exactly the "Nexus 5 support" on this kernel mean if you can't run Android on it without patching? Would it potentially help running Linux distros on our devices or?

There is support for the kernel, so yes, you could now run Arch, Debian, OpenWRT, or DD-WRT much more easily.
Android utilizes old libraries that are not compatible with new kernels (that's at least my understanding of the matter), so you would need to patch it to run a newer kernel, and that could only get you so far.
The newest kernel version that anyone had managed to boot Android with is the latest 4.4.x LTS release.
I wonder if someone could backport the necessary changes from 4.9 to the latest 4.4.x release though, that would already be something.

 

[TheReduxPL]

Thank you! I really like the concept of running *WRT on Nexus - I wonder how would functionality like network booting work like...
Could the mainline kernel also be used for other non-Android OSs like Ubuntu (Touch) or Sailfish OS?

 

[moriel5]

Thank you! I really like the concept of running *WRT on Nexus - I wonder how would functionality like network booting work like...
Could the mainline kernel also be used for other non-Android OSs like Ubuntu (Touch) or Sailfish OS?

I don't think so, as they rely on Android bits to work with the bootloader and recovery.
But perhaps there is a chance with the new OS that KDE are cooking, which is supposed to be completely independent of Android.

 

[moriel5]

The 4.10 kernel brings in mainline support for the Nexus 6P and the Nexus 5X.

I wish that mainline support would arrive for the Nexus 4.

 

[moriel5]

The newest kernel version that anyone had managed to boot Android with is the latest 4.4.x LTS release.

Update: Apparently Android 6.0.x and up can now utilize kernel 4.9.x.
As there is a build of Android 7.1.x for the x86 platform (I have no idea whether it is an official build of Android-x86, nor do I know the precise Android version, though) with a 4.9.x kernel (again, I have no idea precisely which version).
My source is a newly thread opened in the Remix OS forum, in which the OP asks for the possibility of updating the kernel in Remix OS, and mentions that he/she managed to boot it (only in debug mode, though) with the aforementioned kernel.

The source: https://forum.xda-developers.com/remix/remix-os/remix-3-0-207-kernel-t3546057

 

[santi1993]

anyone managed to boot a hh from any kind of 4.9 compilation?

Sent from my Nexus 5 CAF using Tapatalk

 

[scholbert]

Hey folks!

I'm playing around with one of my nexus 5 devices for a while now... right now i got Maru OS installed and it's nice
But anyway this is another story.

anyone managed to boot a hh from any kind of 4.9 compilation?

Yeah i did!

Used this kernel (which is 4.9.27):
https://git.linaro.org/landing-team...rnel-debian-qcom-dragonboard410c-17.04.tar.gz

... and used Linaro GCC 4.8-2014.04 toolchain (had to use the 32Bit version here).
Then:
make qcom_defconfig
make
make qcom-msm8974-lge-nexus5-hammerhead.dtb

Then later on:
cat arch/arm/boot/zImage arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dtb > arch/arm/boot/zImage-dtb


Then i took twrp-3.0.3-0-hammerhead.img and extracted it with abootimg.
Changed the cmdline parameter for console to console=ttyMSM0,115200,n8
Took the new kernel and rebuild the recovery image to be my test image (just quick'n'dirty)

Then via adb:
reboot bootloader

... and afterwards injected the boot image (e.g.):
fastboot boot hammerhead-kernel4.img

See the attached file for the output.
This log was taken with a serial console cable attached to the earphone plug.

Cheers,

scholbert

 

[santi1993]

Hey folks!

I'm playing around with one of my nexus 5 devices for a while now... right now i got Maru OS installed and it's nice
But anyway this is another story.


Yeah i did!

Used this kernel (which is 4.9.27):
https://git.linaro.org/landing-team...rnel-debian-qcom-dragonboard410c-17.04.tar.gz

... and used Linaro GCC 4.8-2014.04 toolchain (had to use the 32Bit version here).
Then:
make qcom_defconfig
make
make qcom-msm8974-lge-nexus5-hammerhead.dtb

Then later on:
cat arch/arm/boot/zImage arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dtb > arch/arm/boot/zImage-dtb


Then i took twrp-3.0.3-0-hammerhead.img and extracted it with abootimg.
Changed the cmdline parameter for console to console=ttyMSM0,115200,n8
Took the new kernel and rebuild the recovery image to be my test image (just quick'n'dirty)

Then via adb:
reboot bootloader

... and afterwards injected the boot image (e.g.):
fastboot boot hammerhead-kernel4.img

See the attached file for the output.
This log was taken with a serial console cable attached to the earphone plug.

Cheers,

scholbert

Linux version 4.9.27 ([email protected])

Wow, you are one of the coolest users on there! i doubt anyone could boot it up!
You rock! hope we can get a public release to test it out!

 

[Icyphox]

Hey folks!

I'm playing around with one of my nexus 5 devices for a while now... right now i got Maru OS installed and it's nice
But anyway this is another story.


Yeah i did!

Used this kernel (which is 4.9.27):
https://git.linaro.org/landing-team...rnel-debian-qcom-dragonboard410c-17.04.tar.gz

... and used Linaro GCC 4.8-2014.04 toolchain (had to use the 32Bit version here).
Then:
make qcom_defconfig
make
make qcom-msm8974-lge-nexus5-hammerhead.dtb

Then later on:
cat arch/arm/boot/zImage arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dtb > arch/arm/boot/zImage-dtb


Then i took twrp-3.0.3-0-hammerhead.img and extracted it with abootimg.
Changed the cmdline parameter for console to console=ttyMSM0,115200,n8
Took the new kernel and rebuild the recovery image to be my test image (just quick'n'dirty)

Then via adb:
reboot bootloader

... and afterwards injected the boot image (e.g.):
fastboot boot hammerhead-kernel4.img

See the attached file for the output.
This log was taken with a serial console cable attached to the earphone plug.

Cheers,

scholbert

Hey that's amazing. I've been working on this too. So where exactly did you enter the command line parameter for console? Can you list out that command?

Sent from my Nexus 5 using XDA Labs

 

[scholbert]

Linux version 4.9.27 ([email protected])

Wow, you are one of the coolest users on there! i doubt anyone could boot it up!
You rock! hope we can get a public release to test it out!

Thanks for appreciation, but what do you expect from "public release"?
As many other already posted here, this kernel is far away from the 3.4 Images for daily use.
So this is just for fun of course :angel:

Hey that's amazing. I've been working on this too. So where exactly did you enter the command line parameter for console? Can you list out that command?

Sent from my Nexus 5 using XDA Labs

Have a look at the tool abootimg.
You could use a bootimg.cfg fle and change the cmdline for your boot image individually.
E.g.:

bootsize = 0xe48800
pagesize = 0x800
kerneladdr = 0x8000
ramdiskaddr = 0x2900000
secondaddr = 0xf00000
tagsaddr = 0x2700000
name = 
cmdline = console=ttyMSM0,115200,n8 androidboot.hardware=hammerhead user_debug=31 maxcpus=2 msm_watchdog_v2.enable=1 androidboot.selinux=permissive

The other parameters are fixed values for hammerhead... and the bootsize value depends on the size needed for your image.
In this case it's just the default value used for TWRP.

Then use the tool like this:
abootimg --create hammerhead-kernel4.img -f bootimg.cfg -k zImage-dtb -r initrd.img

Best regards,

scholbert

 

[Icyphox]

Thanks for appreciation, but what do you expect from "public release"?
As many other already posted here, this kernel is far away from the 3.4 Images for daily use.
So this is just for fun of course :angel:




Have a look at the tool abootimg.
You could use a bootimg.cfg fle and change the cmdline for your boot image individually.
E.g.:

The other parameters are fixed values for hammerhead... and the bootsize value depends on the size needed for your image.
In this case it's just the default value used for TWRP.

Then use the tool like this:
abootimg --create hammerhead-kernel4.img -f bootimg.cfg -k zImage-dtb -r initrd.img

Best regards,

scholbert

Wonderful! The heads-up I needed was the bootimg.cfg. Thanks a bunch. Also, is your ROM usable with this kernel?

Sent from my Nexus 5 using XDA Labs

 

[scholbert]

Wonderful! The heads-up I needed was the bootimg.cfg. Thanks a bunch. Also, is your ROM usable with this kernel?

Sent from my Nexus 5 using XDA Labs

No far away from any use together with a ROM or even anything the TWRP image uses inside.
No graphics... no usb...
This is just a proof of concept, playing around with the dts files and kernel. Nothing more.
If someone would create a console based ramdisk with some tools included, you may dig a little deeper into the soc or check which parts are responsive or not.

Cheers,

scholbert

 

[moriel5]

It has been quite some time.

Does anyone think that using PostMarketOS's kernel as a stepping stone may help get at least kernel 4.4 to a daily-driver ready status?

Update: Perhaps it would also be a good idea to use the Nexus 7 (2013)'s sources to try porting the newer kernel there to the Nexus 4 (as they share the same SOC).

 

[sreehax]

Hey folks!

I'm playing around with one of my nexus 5 devices for a while now... right now i got Maru OS installed and it's nice
But anyway this is another story.


Yeah i did!

Used this kernel (which is 4.9.27):
https://git.linaro.org/landing-team...rnel-debian-qcom-dragonboard410c-17.04.tar.gz

... and used Linaro GCC 4.8-2014.04 toolchain (had to use the 32Bit version here).
Then:
make qcom_defconfig
make
make qcom-msm8974-lge-nexus5-hammerhead.dtb

Then later on:
cat arch/arm/boot/zImage arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dtb > arch/arm/boot/zImage-dtb


Then i took twrp-3.0.3-0-hammerhead.img and extracted it with abootimg.
Changed the cmdline parameter for console to console=ttyMSM0,115200,n8
Took the new kernel and rebuild the recovery image to be my test image (just quick'n'dirty)

Then via adb:
reboot bootloader

... and afterwards injected the boot image (e.g.):
fastboot boot hammerhead-kernel4.img

See the attached file for the output.
This log was taken with a serial console cable attached to the earphone plug.

Cheers,

scholbert

From the logs, it looks like the reason the boot stops is because of init.rc errors. I might be able to help with that, but my nexus 5's battery is toast.