ANDROID Porting系列二、配置一个新产品

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.	en_GB de_DE es_ES fr_CA
PRODUCT_PACKAGES	Lists the APKs to install.	Calendar Contacts
PRODUCT_DEVICE	Name of the industrial design	dream
PRODUCT_MANUFACTURER	Name of the manufacturer	acme
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 source_path:destination_path. The file at the source path should be copied to the destination path when building this product. The rules for the copy steps are defined in config/Makefile
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	vendor/acme/overlay
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