#调用add_lunch_combo函数将full_tiny4412-userdebug
#和full_tiny4412-eng添加到系统相关变量中，后续
#lunch提供的菜单就是根据这些变量产生的
#envsetup.sh末尾通过一个for循环来扫描工程中
#所有可用的vendorsetup.sh并执行它们
#默认会扫面/vendor和/device目录
add_lunch_combo full_tiny4412-userdebug
add_lunch_combo full_tiny4412-eng

#当运行了lunch函数选择了编译的产品后
#编译系统会在产品所在的目录下寻找
#AndroidProducts.mk文件，这里记录
#着该产品的一些具体的属性，但是
#通常我们在这个文件中做一个转向
PRODUCT_MAKEFILES :=     $(LOCAL_DIR)/aosp_tiny4412.mk     $(LOCAL_DIR)/full_tiny4412.mk

# Launcher, Camera and Gallery
ifeq ($(BOARD_USES_LAUNCHER3),true)
PRODUCT_PACKAGES +=     Launcher3
endif
#系统要预装的一系列程序
PRODUCT_PACKAGES +=     Gallery2
# Live Wallpapers
PRODUCT_PACKAGES +=     HoloSpiralWallpaper     LiveWallpapers     LiveWallpapersPicker     MagicSmokeWallpapers     VisualizationWallpapers     librs_jni
#用于重载系统属性
#格式：key=value
#这些属性最终会被存储在设备的
#/system/build.prop文件中
PRODUCT_PROPERTY_OVERRIDES :=     net.dns1=8.8.8.8     net.dns2=8.8.4.4
# Inherit from those products. Most specific first.
#继承 aosp_base_telephony.mk 和device/friendly-arm/tiny4412/device.mk
#文件中的定义
$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
$(call inherit-product, device/friendly-arm/tiny4412/device.mk)
#覆盖继承上面两个文件定义的如下几个变量
# Discard inherited values and use our own instead.
#产品名称，最终会显示在系统设置中的
#"关于设备的选项中"
PRODUCT_NAME := full_tiny4412
#设备名称
PRODUCT_DEVICE := tiny4412
产品生产商
PRODUCT_MANUFACTURER := FriendlyARM (www.arm9.net)
#产品所属品牌
PRODUCT_BRAND := Android
#产品型号
PRODUCT_MODEL := Full Android on TINY4412

# BoardConfig.mk
#
# Product-specific compile-time definitions.
#
# Use the non-open-source parts, if they‘re present
-include vendor/friendly-arm/tiny4412/BoardConfigVendor.mk
#引入BoardConfigCommon.mk
# Use the parts that are common between all Exynos4412s
include device/friendly-arm/tiny4412/BoardConfigCommon.mk
#用来配置SELINUX，SELINUX是android上面的一种安全机制
#我们可以通过配置SELINUX的相关policy，来定制自己的手
#机的一些权限，比如，我们可以完全让root用户没有任何的
#权限和user一样
#配置SELINUX，需要linux内核首先是支持selinux的，
#另外需要android的selinux的配置文件sepolicy里面的内容
#然后就是修改BoardConfig.mk
#首先会包含厂商定制的sepolicy的文件夹：BOARD_SEPOLICY_DIRS
#然后将规则添加到了sepolicy中：BOARD_SEPOLICY_DIRS
BOARD_SEPOLICY_DIRS :=     device/friendly-arm/tiny4412/sepolicy
#配置SELINUX
BOARD_SEPOLICY_UNION :=     file_contexts     service_contexts     app.te     boardinit.te     bluetooth.te     device.te     domain.te     drmserver.te     gpsd.te     mediaserver.te     system_server.te

# BoardConfigCommon.mk
#
# Product-specific compile-time definitions.
#芯片平台
TARGET_BOARD_PLATFORM := exynos4
#芯片类型
TARGET_SOC := exynos4x12
#CPU配置选项
# CPU options
TARGET_CPU_ABI := armeabi-v7a
TARGET_CPU_ABI2 := armeabi
TARGET_CPU_SMP := true
TARGET_ARCH := arm
TARGET_ARCH_VARIANT := armv7-a-neon
TARGET_ARCH_VARIANT_CPU := cortex-a9
TARGET_CPU_VARIANT := cortex-a9
ARCH_ARM_HAVE_NEON := true
ARCH_ARM_HAVE_TLS_REGISTER := true
TARGET_GLOBAL_CFLAGS += -mtune=cortex-a9 -mfpu=neon -mfloat-abi=softfp
TARGET_GLOBAL_CPPFLAGS += -mtune=cortex-a9 -mfpu=neon -mfloat-abi=softfp
TARGET_NO_BOOTLOADER := true
TARGET_NO_KERNEL := true
TARGET_NO_RADIOIMAGE := true
TARGET_BOOTLOADER_BOARD_NAME := tiny4412
TARGET_PROVIDES_INIT_RC := true
TARGET_PROVIDES_INIT_TARGET_RC := true
# Exynos4 support
EXYNOS4X12_ENHANCEMENTS := true
EXYNOS4_ENHANCEMENTS := true
ifeq ($(EXYNOS4X12_ENHANCEMENTS),true)
COMMON_GLOBAL_CFLAGS += -DEXYNOS4_ENHANCEMENTS=1
COMMON_GLOBAL_CFLAGS += -DEXYNOS4X12_ENHANCEMENTS=1
endif
# Launcher
BOARD_USES_LAUNCHER3 := true
# Audio
BOARD_USES_GENERIC_AUDIO := false
BOARD_USES_I2S_AUDIO := true
BOARD_USES_PCM_AUDIO := false
BOARD_USES_SPDIF_AUDIO := false
# ULP, ALP 
BOARD_USE_ULP_AUDIO := false
BOARD_USE_ALP_AUDIO := true
#背光配置
# Backlight
BOARD_USES_PWMLIGHTS := false
#蓝牙配置
# Bluetooth
BOARD_HAVE_BLUETOOTH := true
BOARD_HAVE_BLUETOOTH_CSR := true
BOARD_HAVE_BLUETOOTH_BCM := false
BOARD_HAVE_SAMSUNG_BLUETOOTH := false
BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR := device/friendly-arm/tiny4412/bluetooth
#Wi-Fi配置
# Connectivity - Wi-Fi
WPA_SUPPLICANT_VERSION := VER_0_8_X
BOARD_WPA_SUPPLICANT_DRIVER := WEXT
BOARD_WPA_SUPPLICANT_PRIVATE_LIB := lib_driver_cmd_fawext
BOARD_WLAN_DEVICE := fawext
#文件系统配置
# Filesystem
TARGET_USERIMAGES_USE_EXT4 := true
BOARD_SYSTEMIMAGE_PARTITION_SIZE   := 629145600  # 600MB
BOARD_USERDATAIMAGE_PARTITION_SIZE := 830472192  # 792MB
BOARD_CACHEIMAGE_PARTITION_SIZE    := 536870912  # 512MB
BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE := ext4
BOARD_FLASH_BLOCK_SIZE := 4096
#图形配置
# Graphics
BOARD_USES_HGL := true
BOARD_EGL_CFG := device/friendly-arm/tiny4412/conf/egl.cfg
USE_OPENGL_RENDERER := true
IGN_EGL_BUFFERCOUNT := true
NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
SCREEN_WIDTH := 800
SCREEN_HEIGHT := 1280
DEFAULT_FB_NUM := 2
# FIMG Acceleration
BOARD_USES_FIMGAPI := true
BOARD_USES_SKIA_FIMGAPI := true
BOARD_USES_SKIAHWJPEG := true
COMMON_GLOBAL_CFLAGS += -DSEC_HWJPEG_G2D -DFORCE_SCREENSHOT_CPU_PATH
# HWComposer
BOARD_USES_HWCOMPOSER := true
BOARD_USE_SYSFS_VSYNC_NOTIFICATION := true
# TVOut & HDMI
# BOARD_USE_SECTVOUT := true
# BOARD_USES_SKTEXTBOX := true
BOARD_USES_HDMI_SUBTITLES := false
BOARD_USES_HDMI := true
BOARD_HDMI_STD := STD_1080P
BOARD_HDMI_DDC_CH := DDC_CH_I2C_7
BOARD_HDMI_ROTATE := false
#Camera配置
# Camera
BOARD_CAMERA_HAVE_ISO := true
COMMON_GLOBAL_CFLAGS += -DHAVE_ISO
COMMON_GLOBAL_CFLAGS += -DSAMSUNG_CAMERA_HARDWARE
COMMON_GLOBAL_CFLAGS += -DSAMSUNG_DVFS
BOARD_USES_PROPRIETARY_LIBFIMC := true
# SEC Camera
USE_SEC_CAMERA := false
CAMERA_USE_DIGITALZOOM := true
# BOARD_USE_S5K3H2 := true
#OMX配置
# OMX
BOARD_USE_SAMSUNG_COLORFORMAT := true
BOARD_NONBLOCK_MODE_PROCESS := true
BOARD_USE_STOREMETADATA := true
BOARD_USE_METADATABUFFERTYPE := true
BOARD_USE_S3D_SUPPORT := true
BOARD_USE_DRM := true
BOARD_USE_CSC_FIMC := false
BOARD_USES_MFC_FPS := true
BOARD_USES_FFMPEG := false
#V4L2配置
# V4L2 & ION
BOARD_USE_V4L2 := false
BOARD_USE_V4L2_ION := false
BOARD_NO_OVERLAY := false
#中兴无线模块配置
# ZTE WIRELESS MODEM
BOARD_HAVE_MODEM :=true
BOARD_MODEM_VENDOR :=ZTE
BOARD_MODEM_ID :=MF210
BOARD_MODEM_HAVE_DATA_DEVICE :=true
BOARD_WITH_CALL_FUNCTION:=false