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Porting Method MTK - Part One


Porting Method MTK - Part One

 
  1.  Normal Porting - AOSP, Stock Based, Customed/Modded Stock, Customed/Modded AOSP
  2.  Cyanogenmod 12 - 5.0.2
  3.  Cyanogenmod 12.1 - 5.1.1
  4.  MIUI 7 - KK
  5.  Crossporting MT6582 - MT6592 (vice-versa) AOSP, Stock Based, AOSP, Stock Based, Customed/Modded Stock, Customed/Modded AOSP
Normal Porting - MT6582/MT6592
Stock - Port
system/bin
                file: pq, vold, sdcard (optional)
system/etc:
                file: apns-conf.xml, custom.conf (port file - edit lines)
                folder: bluetooth, firmware, wifi, mddb (optional)
system/lib:
                file: libcamalgo.so, libcamdrv.so, libcameracustom.so, libdpframework.so,
                                  libEGL.so, libMali.so, libsensorservice.so, libsync.so, libvcodecdrv.so
                                  (note: all libaudio files only for fixing audio)
                folder: egl (libEGL_mali.so, libGLES_android.so)
                                                hw (copy all file from stock to port - replace existing)
                                                modules (copy all file from stock to port - replace existing)
system/vendor:
                replace from stock to port - replace existing and leave not on stock
system/xbin:
                file: libmnlp_mt6592, mnld, (and other rooting files needed)


Cyanogenmod 12
Copy stock to port (boot.img)
stock/zImage and stock/ramdisk/ueventd.rc
system/etc:
                folder: firmware (modem_1_wg_n.img or whole firmware folder)
system/lib:
                file: libMali.so,libaudio.primary.default.so,libcamdrv.so,libcamalgo.so,libcameracustom.so
                folder: hw (gralloc.default.so, gralloc.mt6592.so, hwcomposer.mt6592.so)
Cyanogenmod 12.1
Copy stock to port (boot.img)
stock/zImage and stock/ramdisk/ueventd.rc
system/bin: (boot_logo_updater, ipod, logwrapper, netd)
system/etc:
                folder: firmware (modem_1_wg_n.img or whole firmware folder)
                hostapd folder, permissions (android.hardware.camera.xml, android.hardware.microphone.xml)
system/lib:
                hw folder: camera.default.so
                file: libfeatureio.so, libfeatureio.so, libimageio_plat_drv.so, libipod.so, libMali.so, libshowlogo.so

For emulated storage fix

Edit: init.mt65xx.rc
Replace:

on init
    export LD_PRELOAD /system/lib/libxlog.so

    export EXTERNAL_STORAGE /storage/emulated/legacy
    export SECONDARY_STORAGE /storage/sdcard1

    mkdir /mnt/shell 0700 shell shell
    chmod 0750 /mnt/shell
    chown shell sdcard_r /mnt/shell
    mkdir /mnt/shell/emulated 0700 shell shell
    mkdir /mnt/shell/emulated/0 0700 shell shell
    mkdir /storage/emulated 0555 root root

    mkdir /mnt/media_rw/sdcard1 0700 media_rw media_rw
    mkdir /storage/sdcard1 0700 root root

    export EXTERNAL_STORAGE /storage/emulated/legacy
    export SECONDARY_STORAGE /storage/sdcard1
    export EMULATED_STORAGE_SOURCE /mnt/shell/emulated
    export EMULATED_STORAGE_TARGET /storage/emulated

With this:
 
on init
    export LD_PRELOAD /system/lib/libxlog.so
    export EXTERNAL_STORAGE /storage/sdcard0
    export SECONDARY_STORAGE /storage/sdcard1

on init
    mkdir /mnt/media_rw/sdcard0 0700 media_rw media_rw
    mkdir /mnt/media_rw/sdcard1 0700 media_rw media_rw
    mkdir /storage/sdcard0 0700 root root
    mkdir /storage/sdcard1 0700 root root

    export EXTERNAL_STORAGE /storage/sdcard1

    # Support legacy paths
    symlink /storage/sdcard0 /sdcard
    symlink /storage/sdcard0 /mnt/sdcard
 symlink /storage/sdcard1 /mnt/sdcard2


    # USB OTG
    mkdir /storage/usbotg 0700 root root
    mkdir /mnt/media_rw/usbotg 0700 media_rw media_rw
 
And Edit: Framework-res.apk (storagelist.xml)

From this:

    <storage android:storageDescription="@string/storage_internal" android:primary="true" android:emulated="true" android:mtpReserve="400" />
    <storage android:mountPoint="/storage/sdcard1" android:storageDescription="@string/storage_sd_card" android:removable="true" />
    <storage android:mountPoint="/storage/usbotg" android:storageDescription="@string/storage_usb" android:removable="true" />

To this:

    <storage android:storageDescription="@string/storage_internal" android:primary="false" android:removable="false" android:allowMassStorage="true" />
    <storage android:mountPoint="/storage/sdcard1" android:storageDescription="@string/storage_sd_card" android:primary="false" android:removable="true" />
    <storage android:mountPoint="/storage/usbotg" android:storageDescription="@string/storage_usb" android:removable="true" />
</StorageList>


Porting MIUI 7
System Files (Patch Files)
system/bin (mtkbt, vold, sdcard(optional))
system/etc
                folder: firmware and mddb
system/lib
                folder: hw
                files:
                                libcameracustom.so
                                libcameraservice.so
                                libfeatureio.so
                                libMali.so
                                libshowlogo.so
                                libaudio*.so (optional if bug on sound)
system/vendor: copy whole folder to port, replace if existing
system/xbin: libmnlp_mt6592, mnld
Boot.img porting
-copy stock kernel to port boot.img
-compare and edit port init.rc w/ stock init.rc
-copy sepolicy and ueventd.rc from stock to port
Crossporting MT6582 - MT6592 (vice-versa)
stock to port rom
boot.img:
copy ramdisk/init.rc and init.environ.rc bootclash lines from stock to port
system/bin
                copy all file and replace existing
system/etc
                delete bluetooth and mddb folder from port
                copy bluetooth and mddb folder from stock to port
                copy firmware folder from stock to port - replace existing files
                copy permissions folder (platform.xml, handheld_core_hardware.xml) optional/bug fix
                edit port custom.conf
system/lib
                must delete files from stock before copy paste to port
                libandroid.so,libandroid_runtime.so,libandroid_servers.so
                libandroidfw.so,libjavacore.so,libjavacrypto.so
                libwebrtc_audio_preprocessing.so,libwebviewchromium.so,libwebviewchromium_plat_support.so
                *now copy whole lib folder to port libfolder and replace existing file consider hw/modules
system/vendor
                copy stock vendor to port - replace existing
system/xbin
                delete libmnlp_mt6582 from port
                copy libmnlp_mt6592, mnld from stock to port

build.prop:
replace all mt6582 lines to mt6592 vice-versa
replace lines if xport mt6582 - mt6592
mediatek.wlan.chip=MTK_CONNSYS_MT6592
mediatek.wlan.module.postfix=_mtk_connsys_mt6592

 
yadavji Technical

yadavji Technical

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