ANDROID Porting系列二、配置一个新产品
详细说明
下面的步骤描述了如何配置新的移动设备和产品的makefile运行android。
1. 目录//vendor/创建一个公司目录
mkdir vendor/<company_name>
2. 创建一个目录下的公司与您在步骤1中创建产品目录.
mkdir vendor/<company_name>/products/
3. 创建一个特定于产品的 makefile,
调用 vendor/<company_name>/products/<first_product_name>.mk, 这至少包括以下代码：
$(call inherit-product, $(SRC_TARGET_DIR)/product/generic.mk)
#
# Overrides
PRODUCT_NAME := <first_product_name>
PRODUCT_DEVICE := <board_name>
4. 附加产品特定的变量可以被添加到这个Product Definition文件.
5. 在产品目录中，创建一个AndroidProducts.mk文件指向（并找到负责）个别产品make files。
#
# This file should set PRODUCT_MAKEFILES to a list of product makefiles
# to expose to the build system. LOCAL_DIR will already be set to
# the directory containing this file.
#
# This file may not rely on the value of any variable other than
# LOCAL_DIR; do not use any conditionals, and do not look up the
# value of any variable that isn't set in this file or in a file that
# it includes.
#
PRODUCT_MAKEFILES := /
$(LOCAL_DIR)/first_product_name.mk /
6. 创建board-specific目录下贵公司的目录与相匹配的PRODUCT_DEVICE<board_name>引用变量在特定产品作出上述文件。这包括任何使用本产品访问product-specific make file.
mkdir vendor/<company_name>/<board_name>
7. 创建一个在上一步中创建文件的目录BoardConfig.mk (vendor/<company_name>/<board_name>).
# These definitions override the defaults in config/config.make for <board_name>
#
# TARGET_NO_BOOTLOADER := false
#
TARGET_USE_GENERIC_AUDIO := true
8. 如果你想修改系统属性，创建一个system.prop文件your <board_name> directory(vendor/<company_name>/<board_name>).
# system.prop for
# This overrides settings in the products/generic/system.prop file
#
# rild.libpath=/system/lib/libreference-ril.so
# rild.libargs=-d /dev/ttyS0
9. products/AndroidProducts.mk添加一个指向<second_product_name>.mk,.
PRODUCT_MAKEFILES := /
$(LOCAL_DIR)/first_product_name.mk /
$(LOCAL_DIR)/second_product_name.mk
10. 一个Android.mk文件必须包含在供应商/ <company_name> / <board_name>至少有下面的代码.
# make file for new hardware from
#
LOCAL_PATH := $(call my-dir)
#
# this is here to use the pre-built kernel
ifeq ($(TARGET_PREBUILT_KERNEL),)
TARGET_PREBUILT_KERNEL := $(LOCAL_PATH)/kernel
endif
#
file := $(INSTALLED_KERNEL_TARGET)
ALL_PREBUILT += $(file)
$(file): $(TARGET_PREBUILT_KERNEL) | $(ACP)
$(transform-prebuilt-to-target)
#
# no boot loader, so we don't need any of that stuff..
#
LOCAL_PATH := vendor/<company_name>/<board_name>
#
include $(CLEAR_VARS)
#
# include more board specific stuff here? Such as Audio parameters.
#
11. 要创建一个相同的板第二个产品，创建第二个product-specific make file called vendor/company_name/products/<second_product_name>.mkthat includes:
$(call inherit-product, $(SRC_TARGET_DIR)/product/generic.mk)
#
# Overrides
PRODUCT_NAME := <second_product_name>
PRODUCT_DEVICE := <board_name>
到现在为止，你应该有两个新产品，名为<first_product_name>和<company_name>相关<second_product_name>。为了验证一个产品是正确配置（<first_product_name>，例如），执行以下命令：
. build/envsetup.sh
make PRODUCT-<first_product_name>-user
你应该找到新的建设二进制文件位于out/target/product/<board_name>。
新产品文件树
该文件树下面说明你自己的系统应该完成上述步骤。
· <company_name>
o <board_name>
§ Android.mk
§ product_config.mk
§ system.prop
o products
§ AndroidProducts.mk
§ <first_product_name>.mk
§ <second_product_name>.mk
产品定义文件
特定产品的变量定义在产品定义文件。一个产品的定义文件可以继承其他产品定义文件，从而减少了需要复制和简化维护。
变量在定义文件保持产品包括：
|
Parameter |
Description |
Example |
|
PRODUCT_NAME |
最终用户可见名称的整体产品。出现在“关于手机”信息。 |
|
|
PRODUCT_MODEL |
最终用户可见的最终产品名称 |
|
|
PRODUCT_LOCALES |
A space-separated list of two-letter language code, two-letter country code pairs that describe several settings for the user, such as the UI language and time, date and currency formatting. The first locale listed in PRODUCT_LOCALES is is used if the locale has never been set before. |
|
|
PRODUCT_PACKAGES |
Lists the APKs to install. |
|
|
PRODUCT_DEVICE |
Name of the industrial design |
|
|
PRODUCT_MANUFACTURER |
Name of the manufacturer |
|
|
PRODUCT_BRAND |
The brand (e.g., carrier) the software is customized for, if any |
|
|
PRODUCT_PROPERTY_OVERRIDES |
List of property assignments in the format "key=value" |
|
|
PRODUCT_COPY_FILES |
List of words like |
|
|
PRODUCT_OTA_PUBLIC_KEYS |
List of OTA public keys for the product |
|
|
PRODUCT_POLICY |
Indicate which policy this product should use |
|
|
PRODUCT_PACKAGE_OVERLAYS |
Indicate whether to use default resources or add any product specific overlays |
|
|
PRODUCT_CONTRIBUTORS_FILE |
HTML file containing the contributors to the project. |
|
|
PRODUCT_TAGS |
list of space-separated words for a given product |
下面的代码段演示了一个典型的产品定义文件。
$(call inherit-product, build/target/product/generic.mk)
#Overrides
PRODUCT_NAME := MyDevice
PRODUCT_MANUFACTURER := acme
PRODUCT_BRAND := acme_us
PRODUCT_LOCALES := en_GB es_ES fr_FR
PRODUCT_PACKAGE_OVERLAYS := vendor/acme/overlay