Rockie's Android Porting Guide（1）——Build your own board

最新推荐文章于 2021-05-28 21:56:42 发布

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本文介绍如何从Google Git下载Android 2.0 Eclair代码，并基于generic进行复制来创建自定义开发板idea6410。文章详细讲解了配置步骤，包括环境设置、产品和板级配置文件的修改。

Rockie's Android Porting Guide（1）——build your own board

Rockie Cheng

Download Android 2.0 eclair codes from google git!

（1）在android源码目录下执行(为何每次都要执行？)
. build/envsetup.sh

（2）建立自己的board
copy build/target/board/generic to build/target/board/idea6410

修改build/target/product/AndroidProduct.mk,添加
$(LOCAL_DIR)/idea6410.mk /

copy build/target/product/generic.mk to build/target/product/idea6410.mk

修改build/target/product/idea6410.mk
# Overrides
PRODUCT_BRAND := idea6410
PRODUCT_DEVICE := idea6410
PRODUCT_NAME := idea6410

（3）tapas
[kyon@SEP4020 android2.0]$ tapas
Build for the simulator or the device?
1. Device
2. Simulator
Which would you like? [1]

Build type choices are:
1. release
2. debug
Which would you like? [1] 1

Which product would you like? [generic] idea6410

Variant choices are:
     1. user
     2. userdebug
     3. eng
Which would you like? [eng]

============================================
PLATFORM_VERSION_CODENAME=Eclair
PLATFORM_VERSION=Eclair
TARGET_PRODUCT=idea6410
TARGET_BUILD_VARIANT=eng
TARGET_SIMULATOR=false
TARGET_BUILD_TYPE=release
TARGET_ARCH=arm
HOST_ARCH=x86
HOST_OS=linux
HOST_BUILD_TYPE=release
BUILD_ID=ECLAIR
============================================

[kyon@SEP4020 android2.0]$

以上只是基于generic简单的复制，需要更详细的定制开发板设备

附录：
1）build/target/product/idea6410.mk内容
# This is a generic product that isn't specialized for a specific device.
# It includes the base Android platform. If you need Google-specific features,
# you should derive from generic_with_google.mk

PRODUCT_PACKAGES := /
    AccountAndSyncSettings /
    AlarmClock /
    AlarmProvider /
    Bluetooth /
    Calculator /
    Calendar /
    Camera /
    CertInstaller /
    DrmProvider /
    Email /
    Gallery /
    LatinIME /
    Mms /
    Music /
    Settings /
    Sync /
    Updater /
    CalendarProvider /
    SyncProvider

$(call inherit-product, $(SRC_TARGET_DIR)/product/core.mk)

# Overrides
PRODUCT_BRAND := idea6410
PRODUCT_DEVICE := idea6410
PRODUCT_NAME := idea6410

产品名称及包含的应用程序

2）build/target/board/idea6410/BoardConfig.mk
# config.mk
#
# Product-specific compile-time definitions.
#

# The generic product target doesn't have any hardware-specific pieces.
TARGET_NO_BOOTLOADER := true
TARGET_NO_KERNEL := true
TARGET_CPU_ABI := armeabi
HAVE_HTC_AUDIO_DRIVER := true
BOARD_USES_GENERIC_AUDIO := true

不编译bootloader及内核
使用arm eabi编译器
使用HTC和通用音频（没有使用ALSA）

如果需要添加HAL层驱动，需要修改此文件

3）build/target/board/idea6410/AndroidBoard.mk
LOCAL_PATH := $(call my-dir)

file := $(TARGET_OUT_KEYLAYOUT)/tuttle2.kl
ALL_PREBUILT += $(file)
$(file) : $(LOCAL_PATH)/tuttle2.kl | $(ACP)
$(transform-prebuilt-to-target)

include $(CLEAR_VARS)
LOCAL_SRC_FILES := tuttle2.kcm
include $(BUILD_KEY_CHAR_MAP)

目前看来加入了一些键盘映射文件

阿虚

Rockie Cheng