【系统移植】Android系统移植
$ . .
/build
/envsetup.sh
// 每打开一个终端,就需要执行一次
$ choosecombo // 选择产品
Build for the simulator or the device ? // 目标文件时运行在模拟上还是真实的开发板
1. Device
2. Simulator
Which would you like ? [ 1] 1
Build type choices are : // 编译目标文件的类型
1. release
2. debug
Which would you like ? [ 1] 1
Which product would you like ? [generic] fs100 // 产品的名字叫fs100
Variant choices are : // 目标文件给谁用, 权限的管理
1. user // 用户, 产品
2. userdebug // 用户调试,
3. eng // 工程师
Which would you like ? [eng] 3
== == == == == == == == == == == == == == == == == == == == == ==
PLATFORM_VERSION_CODENAME =REL
PLATFORM_VERSION = 2. 1 -update1
TARGET_PRODUCT =fs100
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 =ERE27
== == == == == == == == == == == == == == == == == == == == == ==
$ choosecombo // 选择产品
Build for the simulator or the device ? // 目标文件时运行在模拟上还是真实的开发板
1. Device
2. Simulator
Which would you like ? [ 1] 1
Build type choices are : // 编译目标文件的类型
1. release
2. debug
Which would you like ? [ 1] 1
Which product would you like ? [generic] fs100 // 产品的名字叫fs100
Variant choices are : // 目标文件给谁用, 权限的管理
1. user // 用户, 产品
2. userdebug // 用户调试,
3. eng // 工程师
Which would you like ? [eng] 3
== == == == == == == == == == == == == == == == == == == == == ==
PLATFORM_VERSION_CODENAME =REL
PLATFORM_VERSION = 2. 1 -update1
TARGET_PRODUCT =fs100
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 =ERE27
== == == == == == == == == == == == == == == == == == == == == ==
编译 make -j2
编译完成之后
eclair_2.1_farsight ===> rootfs
制作根文件目录:
out
/target
/product
/fs10
/root
out /target /product /fs10 /system
mkdir myrootfs
cp -raf out /target /product /fs100 /root /* myrootfs/
cp -raf out/target/product/fs100/system myrootfs
out /target /product /fs10 /system
mkdir myrootfs
cp -raf out /target /product /fs100 /root /* myrootfs/
cp -raf out/target/product/fs100/system myrootfs
===> 制作后的rootfs里面有什么内容:
data
// apk安装目录
default.prop
system
|
app // 系统自带的apk
bin
etc
lib
usr
xbin
build.prop // 编译的属性信息: 编译时间,作者,平台
fonts // 字体库
framework // android framework运行核心代码的二进制文件
init // 第一个用户进程
init.fs100.rc
init.rc // 启动脚本, 规定了init进程会去启动哪些其他的进程, 类似etc/inittab
init.goldfish.rc
sbin
dev
proc
sys
default.prop
system
|
app // 系统自带的apk
bin
etc
lib
usr
xbin
build.prop // 编译的属性信息: 编译时间,作者,平台
fonts // 字体库
framework // android framework运行核心代码的二进制文件
init // 第一个用户进程
init.fs100.rc
init.rc // 启动脚本, 规定了init进程会去启动哪些其他的进程, 类似etc/inittab
init.goldfish.rc
sbin
dev
proc
sys
运行
1, 烧录的方式:
set bootcmd nand read 0x20008000 0x900000 0x300000 \; go 0x20008000
set bootargs console =ttySAC0, 115200 init = /init root = /dev /mtdblock3 rootfstype =yaffs2 ip = 192. 168. 7. 6 ethaddr =00 : 23 : 24 : 56 : 7e : 8e
或者 :
set bootargs console =ttySAC0, 115200 init = /init root = 1f03 rootfstype =yaffs2
或者 :
set bootargs console =ttySAC0, 115200 init = /init root = 31 : 03 rootfstype =yaffs2
因为烧录的jffs, yaffs扫描的时候出问题, 文件系统的分区部分擦擦出
yaffs tragedy : no more erased blocks
! ! ! ! ! ! ! ! ! Allocator out ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
yaffs tragedy : no more erased blocks
! ! ! ! ! ! ! ! ! Allocator out ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
yaffs tragedy : no more erased blocks
! ! ! ! ! ! ! ! ! Allocator out ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
yaffs tragedy : no more erased blocks
! ! ! ! ! ! ! ! ! Allocator out ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
yaffs tragedy : no more erased blocks
解决:nand erase 0x9800000 0x6800000
set bootargs console =ttySAC0, 115200 init = /init root = /dev /mtdblock3 rootfstype =yaffs2 ip = 192. 168. 7. 6 ethaddr =00 : 23 : 24 : 56 : 7e : 8e
或者 :
set bootargs console =ttySAC0, 115200 init = /init root = 1f03 rootfstype =yaffs2
或者 :
set bootargs console =ttySAC0, 115200 init = /init root = 31 : 03 rootfstype =yaffs2
因为烧录的jffs, yaffs扫描的时候出问题, 文件系统的分区部分擦擦出
yaffs tragedy : no more erased blocks
! ! ! ! ! ! ! ! ! Allocator out ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
yaffs tragedy : no more erased blocks
! ! ! ! ! ! ! ! ! Allocator out ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
yaffs tragedy : no more erased blocks
! ! ! ! ! ! ! ! ! Allocator out ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
yaffs tragedy : no more erased blocks
! ! ! ! ! ! ! ! ! Allocator out ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
yaffs tragedy : no more erased blocks
解决:nand erase 0x9800000 0x6800000
调试
log系统
/ # ls /dev/log/*
/dev/log/events(数据事件) /dev/log/main(大部分的调试信息) /dev/log/radio(针对无线通信)
logcat
==
> main缓冲区的调试信息
logcat -b main
logcat -b radio
logcat -b events
I /ActivityManager( 1900) : Start proc com.android.inputmethod.latin for service com.android.inputmethod.latin /.LatinIME : pid = 1945 uid = 10002 gids ={ 3003, 1015}
调试级别 /标签tag(pid) : 调试内容
调试级别 :
D debug
I info
W warning
E error
F fatal
标签tag : 区分调试信息是从哪个代码中打印出来
过滤:
logcat -s "ActivityManager"
//清空缓冲
logcat -c
logcat -b main
logcat -b radio
logcat -b events
I /ActivityManager( 1900) : Start proc com.android.inputmethod.latin for service com.android.inputmethod.latin /.LatinIME : pid = 1945 uid = 10002 gids ={ 3003, 1015}
调试级别 /标签tag(pid) : 调试内容
调试级别 :
D debug
I info
W warning
E error
F fatal
标签tag : 区分调试信息是从哪个代码中打印出来
过滤:
logcat -s "ActivityManager"
//清空缓冲
logcat -c
android中如何用c写一个可执行代码--->编译出来-->运行
Android.mk==> 改编后的Makefile
目标文件名
: 依赖文件名
编译规则
目标文件的路径
依赖文件的路径
写 : 抄模板 :hardware /ril /rild /Android.mk
#获取源码目录
LOCAL_PATH : = $(call my -dir)
include $(CLEAR_VARS)
#表示依赖文件
LOCAL_SRC_FILES : = hello.c
#表示目标文件
LOCAL_MODULE : = hello_arm_elf
#表示编译方法
include $(BUILD_EXECUTABLE)
编译规则
目标文件的路径
依赖文件的路径
写 : 抄模板 :hardware /ril /rild /Android.mk
#获取源码目录
LOCAL_PATH : = $(call my -dir)
include $(CLEAR_VARS)
#表示依赖文件
LOCAL_SRC_FILES : = hello.c
#表示目标文件
LOCAL_MODULE : = hello_arm_elf
#表示编译方法
include $(BUILD_EXECUTABLE)
===> 编译:
mmm mytest/c_test/
== == == == == == == == == == == == == == == == == == == == == ==
PLATFORM_VERSION_CODENAME =REL
PLATFORM_VERSION = 2. 1 -update1
TARGET_PRODUCT =fs100
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 =ERE27
== == == == == == == == == == == == == == == == == == == == == ==
make :进入目录 '/home/ldswfun/src_s5pc/eclair_2.1_farsight'
target thumb C : hello_arm_elf < = mytest /c_test /hello.c
target Executable : hello_arm_elf (out /target /product /fs100 /obj /EXECUTABLES /hello_arm_elf_intermediates /LINKED /hello_arm_elf)
target Non -prelinked : hello_arm_elf (out /target /product /fs100 /symbols /system /bin /hello_arm_elf)
target Strip : hello_arm_elf (out /target /product /fs100 /obj /EXECUTABLES /hello_arm_elf_intermediates /hello_arm_elf)
Install : out /target /product /fs100 /system /bin /hello_arm_elf
make :离开目录“ /home /ldswfun /src_s5pc /eclair_2. 1_farsight”
== == == == == == == == == == == == == == == == == == == == == ==
PLATFORM_VERSION_CODENAME =REL
PLATFORM_VERSION = 2. 1 -update1
TARGET_PRODUCT =fs100
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 =ERE27
== == == == == == == == == == == == == == == == == == == == == ==
make :进入目录 '/home/ldswfun/src_s5pc/eclair_2.1_farsight'
target thumb C : hello_arm_elf < = mytest /c_test /hello.c
target Executable : hello_arm_elf (out /target /product /fs100 /obj /EXECUTABLES /hello_arm_elf_intermediates /LINKED /hello_arm_elf)
target Non -prelinked : hello_arm_elf (out /target /product /fs100 /symbols /system /bin /hello_arm_elf)
target Strip : hello_arm_elf (out /target /product /fs100 /obj /EXECUTABLES /hello_arm_elf_intermediates /hello_arm_elf)
Install : out /target /product /fs100 /system /bin /hello_arm_elf
make :离开目录“ /home /ldswfun /src_s5pc /eclair_2. 1_farsight”
===> 运行:
cp -raf out/target/product/fs100/system/bin/hello_arm_elf /opt/myrootfs/
@成鹏致远
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