[Pipo-Project] M7Pro kernel

[TriA]

Regarding battery life:
I wasn't able to reproduce a fast battery drain in any condition, so I think there was a bug in some application, and isn't related to the kernel.

v17:
still no camera flash
compass says "west" to the real north
gravity sensor OK

[d33]

I think I'll have to give up on this. It needs someone with an M7 to code and test. The code is pushed and 99% there it just needs a fiddle with the compass layout and the flash pin worked out. Should be really straightforward.

[JohnThomson]

Hello d33, testing v17 Icons are still where they should be ie at bottom,
but I still have to touch at the corresponding position at the top. Hard to
test anything else much, but definitely no flash

[d33]

Hello d33, testing v17 Icons are still where they should be ie at bottom,
but I still have to touch at the corresponding position at the top. Hard to
test anything else much, but definitely no flash

FWIW I've re-uploaded with the Y-Axis reversed and made sure the setting is in the defconfig file.

[micmail]

Out of curiosity.. is the process of building the M7pro kernel described somewhere? What about sources, toolchain, settings..? I have a M7Pro (with 3G) and if it is the case of tinkering, for the sake of learning, I could give it a shot!

[raxy]

for micmail and all the guys wanting to join the party with various experiences and backgrounds,
there are numerous prerequisites to check before deciding :
- plenty of hardware resources :
disk space (doezens of GB) and RAM (4G+) and Gigahertz (2+) and cores (4+) on a freshly installed and dedicated linux machine (ideally an ubuntu 14.04 based 64bit distribution you master and have deployed yourself)
- plenty of time and patience, unless you have an enormous PCIE SSD and nitrogen cooled 5GHz CPU, build alone will take some significant time
- knowledge of the firmware and partitions flashing procedure, ideally on at least a couple of linux based tools you have to install
- good knowledge of when to use sudo and why
- be ready to loose the whole tablet content and be prepared to unbrick the tablet when will not boot anymore

one good starting point once all above things are checked:
http://source.android.com/source/initializing.html
and thne focus on kernel building only

so do you want to have a ride with us ?

[d33]

Out of curiosity.. is the process of building the M7pro kernel described somewhere? What about sources, toolchain, settings..? I have a M7Pro (with 3G) and if it is the case of tinkering, for the sake of learning, I could give it a shot!

I wrote this a long time ago. Should still be good.

[micmail]

Thanks all for your comments. I decided to go for the virtual machine route. Installed a 14.04.2 LTS 64 bit on my Virtualbox. The apt-get command did not work straight out of the box but the arm-linux-gnueabihf is now installed and arm-linux-gnueabihf-gcc --version outputs
arm-linux-gnueabihf-gcc (Ubuntu/Linaro 4.8.2-16ubuntu4) 4.8.2
I pulled

https://github.com/Dee-UK/RK3188_tablet_kernel_sources

as it seemed the most up to date.
I tried
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- clean
and cleans.
It would be nice if D33 could share the initial kernel configuration for M7Pro.. otherwise

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- nconfig

could be quite cumbersome to interpret?

Bests,
Mic

[d33]

make Pipo_M7Pro_defconfig
make nconfig
make -j4 kernel.img

you don't need the ARCH/CROSS_COMPILE statements as the ARCH is defaulted in the Makefile and the .config contains the cross compiler

[micmail]

Hello d33,

OK compiled and was quicker than I expected (only a few minutes actually).
Having pulled the GIT repo, should I expect the kernel.img I just obtained for M7Pro the same as your last 1.34.17 ?
The file size is slightly different...

Bests,
Mic

[d33]

Nah. It'll have the new I/O schedulers in

[Virtul]

Same here, flash doesn't work not a big deal tho, can live without it
And also I'm looking for the 3G version, is it possible to compile one?

[Snewp]

v17 - 3g does not work. I tried other kernels, and the 3g works.

[d33]

v17 - 3g does not work. I tried other kernels, and the 3g works.

thanks for the confirmation.

[d33]

I've compiled the STOCK Pipo M7pro source code (not 'mine') with the rk29 switch added. Let me know if this adds 3g working

here