如何下载Android(安卓)kernel内核源代码,编译烧写验证

1. Download Kernel source
Study:
1. Please refer to the AOSP official kernel download address:
http://source.android.com/source/building-kernels.html
2. goto https://android.googlesource.com/kernel/msm.git check which branch your will get,
for Secure Phone please checkout android-msm-hammerhead-3.4-kitkat-mr1 version

commands:
$ git clone https://android.googlesource.com/kernel/msm.git hammerhead-kernel
$ cd hammerhead-kernel
$ git checkout android-msm-hammerhead-3.4-kitkat-mr1

2. Build Kernel
$ cd $(AOSP_PATH)
$ . build/envsetup.sh
$ lunch 12
$ export ARCH=arm
$ export SUBARCH=arm
$ export CROSS_COMPILE=arm-eabi-
$ cd hammerhead-kernel
$ make hammerhead_defconfig
$ make

3. Verify Kernel

cp $(KERNEL)arch/arm/boot/zImag-dtb (ANDROID_ROOT)out/target/product/hammerhead/kernel

out/host/linux-x86/bin/mkbootimg --kernel out/target/product/hammerhead/kernel --ramdisk out/target/product/hammerhead/ramdisk.img --cmdline "console=ttyHSL0,115200,n8 androidboot.hardware=hammerhead user_debug=31 maxcpus=2 msm_watchdog_v2.enable=1" --base 0x00000000 --pagesize 2048 --ramdisk_offset 0x02900000 --tags_offset 0x02700000 --output out/target/product/hammerhead/boot.img

adb shell su 0 reboot bootloader

fastboot flash boot out/target/product/hammerhead/boot.img

fastboot reboot

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