-. Course Outline
: Purporse : SQLite/FileSystem/BlockDriver to LDD/Storage
: Benchmark Tools
0. Android Custom Kernel
: Environment
Host : Ubuntu 12.04
Kernel : 3.2.0.23-generic
H/W : Nexus5
1. Install Source for msm kernel
#] git clone http:s//android.googlesource.com/kernel/msm.git
#] cd msm
#] git checkout 3.4.0-generic
2. Install Toolchain
#] cd workspace
#] git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6 .
#] export CROSS_COMPILE=/home/android/workspace/bin/arm-eabi-
3. Build Kernel
#] cd nexus5/kernel
#] make ARCH=arm hammerhead_defconfig
#] make -j2
4. Install ADB and Fastboot via PPA(http://www.webupd8.org/2012/08/install-adb-and-fastboot-android-tools.html)
sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install android-tools-adb android-tools-fastboot: if PPA tools not working, remove packages :(
#] sudo apt-get remove android-tools-adb android-tools-fastboot
4. Install Android Tools with dev site(http://developer.android.com/sdk/index.html#download)
#] tar xzf /home/android/Downloads/android-sdk-linux.tgz -C /home/android/bin
#] cd /home/android/bin/android-sdk-linux
#] ./tools/android update --no-ui
* Add PATH for JAVA_HOME & platform-tools
5. USB debugging setup in Nexus5
`Menu` => `About Phone` => "Many time" touched `build number`!. => back => `Developer option` => USB debugging enabled.
6. ADB command testing
#] adb devices
#] adb shell ; exit
#] adb push aa /sdcard/.
#] adb pull /sdcard/aa .
7. FASTBOOT command testing
: reboot nexus5
#] adb reboot-bootloader
or
- Manual power-off/Boot key with Vol-up/Vol-down keys.
#] fastboot devices
android@ubuntu:~/bin/android-sdk-linux/platform-tools$ fastboot devices |
???????????? fastboot android@ubuntu:~/bin/android-sdk-linux/platform-tools$ fastboot oem unlock ... FAILED (remote: Already Unlocked) finished. total time: 0.004s android@ubuntu:~/bin/android-sdk-linux/platform-tools$ fastboot oem lock ... OKAY [ 0.093s] finished. total time: 0.093s android@ubuntu:~/bin/android-sdk-linux/platform-tools$ fastboot oem unlock ... OKAY [ 19.151s] finished. total time: 19.151s android@ubuntu:~/bin/android-sdk-linux/platform-tools$ |
8. Download recovery image for Nexus5
http://techerrata.com/file/twrp2/hammerhead/openrecovery-twrp-2.6.3.4-hammerhead.img
download : openrecovery-twrp-2.6.3.4-hammerhead.img
-. Recovery image flash with Fastboot
android@ubuntu:~/Downloads$ adb reboot bootloader android@ubuntu:~/Downloads$ fastboot flash recovery ./openrecovery-twrp-2.6.3.4-hammerhead.img |
-. for elegant reboot. :)
#] fastboot reboot
9. Rooting via SUperSU
-. Click `SUperSU installer`
=> Check TWRP => COntinue
#] adb shell;su
10. Bootimage dump from Nexus5 device
-. Dump boot image
#] adb shell
#] su
#] cd /dev/block/platform/msm_sdcc.1/by-name
#] dd if=boot of=sdcard/boot.img
#] exit; exit
#] adb pull /sdcard/boot.img ./workspace/.
-.Split Boot image to developer readable file list
#] wget http://dmclab.hanyang.ac.kr/wikidata/androidcamp/mkboot_tools.zip
#] unzip mkboot_tools.zip
#] chmod a+x *
: Split boot image to `Boot image files`
#] unmkbootimg -i boot.img
: Replace custom kernel (user built to device kernel)
#] android@ubuntu:~/resource$ cp -a ~/src/nexus5/kernel/arch/arm/boot/zImage-dtb ./kernel
android@ubuntu:~/resource$ mkbootimg --base 0 --pagesize 2048 --kernel_offset 0x00008000 --ramdisk_offset 0x02900000 --second_offset 0x00f00000 --tags_offset 0x02700000 --cmdline 'console=ttyHSL0,115200,n8 androidboot.hardware=hammerhead user_debug=31 maxcpus=2 msm_watchdog_v2.enable=1' --kernel kernel --ramdisk ramdisk.cpio.gz -o ./boot.img |
: Device reboot to Bootloader
#] adb reboot bootloader
:check device attach in host
#] fastboot devices
: Custom boot image flash to device boot partition
#] fastboot flash boot ./boot.img
: for elegeant reboot :)
#] fastboot reboot
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