Build Android Kernel && Kernel Module

I Build Android Kernel (with Module enabled)

1. Kernel source is under Android_src/kernel folder

2. Config file is under kernel_src/arch/arm/configs folder Xxx_deconfig

3. Setup Config:

$make Arch=arm Cross_compile=arm-eabi-xxx_defconfig

(. config file can also is created from device:

ADB pull proc/config.gz

Zcat config.gz >. config

)

4. Enable module:

$make Arch=arm Cross_compile=arm-eabi-modules_prepare

5. Build Kernel:

$make arch=arm cross_compile=arm-eabi--JX

[Error in compiling kernel:]

[Error1:]

Drivers/scsi/ufs/ufs_test.c:25:19:fatal error:. /sd.h:no such file or directory
#include < /sd.h>
Solution:
---kernel2/drivers/scsi/ufs/ufs_test.c 2014-09-18 14:37:07.000000000 +0800

+ + + kernel/drivers/scsi/ufs/ufs_test.c 2014-11-02 10:18:05.282973816 +0800

@@ -22,7 +22,7 @@

#include <scsi/scsi_device.h>

#include <scsi/scsi_cmnd.h>

#include <scsi/scsi_host.h>

-#include < /sd.h>

+ #include ". /sd.h "

#include "Ufshcd.h"

#include "Ufs.h"

[Error2:]

In file included from drivers/video/msm/mdss/mdss_mdp_trace.h:260:0,
From drivers/video/msm/mdss/mdss_mdp.c:61:
Include/trace/define_trace.h:79:43:fatal error:./mdss_mdp_trace.h:no such file or directory
#include Trace_include (trace_include_file)

Solution:

---kernel2/drivers/video/msm/mdss/mdss_mdp_trace.h 2014-09-18 14:37:12.000000000 +0800

+++kernel/drivers/video/msm/mdss/mdss_mdp_trace.h 2014-11-02 10:31:53.000000000 +0800

@@ -17,7 +17,7 @@

#undef Trace_system

#define Trace_system MDSS

#undef Trace_include_path

-#define Trace_include_path.

+ #define Trace_include_path. /.. /.. /.. /drivers/video/msm/mdss

#undef Trace_include_file

#define Trace_include_file Mdss_mdp_trace

II Build Module 1. Makefile:

VERSION = 3
Patchlevel = 10
Sublevel = 40
Extraversion =-xxxxxx
Extra_cflags=-fno-pic
Obj-m + = XXXX.O
Kdir=src_to_android_src/source/kernel
PWD: = $ (shell pwd)
Ccpath: = Src_to_ndk/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin
Default

Make-c $ (Kdir) Arch=arm cross_compile=$ (Ccpath)/arm-linux-androideabi-subdirs=$ (PWD) modules
Clean

Make-c $ (Kdir) Arch=arm cross_compile=$ (Ccpath)/arm-linux-androideabi-subdirs=$ (PWD) Clean

2. VERSION in Makefile:

Kernel version can found using the following command

$ adb shell

$ cat/proc/version

3. After build, adb push ... ko/sdcard/; ADB shell; Insmode ... ko

DMESG See log

Reference:

[1] Https://github.com/marco-pratesi/android/blob/master/HOWTOs/Android-Build-Kernel-Modules-HOWTO.txt

[2] http://forum.xda-developers.com/showthread.php?t=1585289

[3] Http://forum.xda-developers.com/note-4/snapdragon-dev/sm-n910f-twrp-2-8-1-0-t2923509/page3

[4] https://www.movzio.com/howto/compile-android-kernel-source-beginners-guide-2/

[5] http://forum.xda-developers.com/showthread.php?t=1236576

Build Android Kernel && Kernel Module