怎樣將Android移植到FS2410開(kāi)發(fā)板上

一、目前進(jìn)展
1．Android已經(jīng)可以通過(guò)NFS在FS2410開(kāi)發(fā)板上運(yùn)行

二、目前缺陷
1．觸摸屏沒(méi)有校準(zhǔn)
2．Android中時(shí)鐘停止，結(jié)束zygote進(jìn)程，系統(tǒng)重啟，時(shí)鐘更新，但再次停止不動(dòng)
3．串口無(wú)法與GPRS模塊通訊

三、移植步驟
一、移植Android內(nèi)核到FS2410開(kāi)發(fā)板上
1、下載linux-2.6.25-android-1.0_r1.tar.gz

2、將內(nèi)核解壓到用戶(hù)目錄，如/home/wangan/kernel.git

3、進(jìn)入kernel.git文件夾，如cd ~/kernel.git/

4、修改arch/arm/plat-s3c24xx/common-smdk.c文件中的nand flash分區(qū)設(shè)置，如gedit arch/arm/plat-s3c24xx/common-smdk.c
修改static struct mtd_partition smdk_default_nand_part[]結(jié)構(gòu)體為：
static struct mtd_partition smdk_default_nand_part[] = {
?????? [0] = {
????????????? .name????? = "Boot Agent",
????????????? .size = SZ_256K,
????????????? .offset???? = 0,
?????? },
?????? [1] = {
????????????? .name????? = "Linux Kernel",
????????????? .offset = SZ_256K,
????????????? .size = SZ_2M - SZ_256K,
?????? },
?????? [2] = {
????????????? .name????? = "File System",
????????????? .offset = SZ_2M,
????????????? .size = SZ_32M - SZ_2M,
?????? },
?????? [3] = {
????????????? .name????? = "Other",
????????????? .offset???? = SZ_32M,
????????????? .size = SZ_32M,
?????? }
};

5、在網(wǎng)站上下載IA32 GNU/Linux TAR。

6、將文件解壓到用戶(hù)目錄，如/home/wangan/arm-2008q3

7、進(jìn)入arm-2008q3/bin文件夾，如cd ~/arm-2008q3/bin/

8、添加當(dāng)前路徑進(jìn)入環(huán)境變量，如export PATH=$PWD:$PATH，或修改~/.bashrc文件并重新登錄

9、進(jìn)入內(nèi)核文件夾，如cd ~/kernel.git/

10、修改Makefile文件，如gedit Makefile
更改ARCH和CROSS_COMPILE
#ARCH????????? ?= $(SUBARCH)
ARCH??????????? ?= arm
#CROSS_COMPILE????? ?= arm-eabi-
CROSS_COMPILE?????? ?= arm-none-eabi-

11、從華清遠(yuǎn)見(jiàn)Linux-2.6.8.1內(nèi)核壓縮包中提取.config文件（注意：config前面有個(gè)“.”）放入kernel.git文件夾

12、運(yùn)行make menuconfig
(1) 確保System Type? ---> ARM system type ()中的內(nèi)容為Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443
(2) 確保System Type? ---> S3C2410 Machines? ---> [*] SMDK2410/A9M2410被勾選
(3) 取消選擇與Goldfish相關(guān)的內(nèi)容
Device Drivers? ---> Character devices? ---> < > Goldfish TTY Driver
Device Drivers? ---> Power supply class support? ---> < >?? Goldfish battery driver (NEW)
Device Drivers? ---> Real Time Clock? ---> < >?? GOLDFISH (NEW)
Device Drivers? ---> Graphics support? ---> Support for frame buffer devices? ---> < >?? Goldfish Framebuffer
(4) 選擇S3C2410 LCD相關(guān)的內(nèi)容
Device Drivers? ---> Graphics support? ---> Support for frame buffer devices? ---> <*>?? S3C2410 LCD framebuffer support
Device Drivers? ---> Graphics support? ---> [*] Bootup logo? ---> [*]?? Standard black and white Linux logo
Device Drivers? ---> Graphics support? ---> [*] Bootup logo? ---> [*]?? Standard 16-color Linux logo
Device Drivers? ---> Graphics support? ---> [*] Bootup logo? ---> [*]?? Standard 224-color Linux logo
(5) 選中Android內(nèi)核必須選項(xiàng)
Kernel Features? ---> [*] Use the ARM EABI to compile the kernel
General setup? ---> [*] Use full shmem filesystem
General setup? ---> [*] Enable Android's Shared Memory Subsystem
System Type? ---> [*] Support Thumb user binaries
Device Drivers? ---> Android? ---> [*] Android log driver
Device Drivers? ---> Android? ---> <*> Binder IPC Driver
(6) 盡量選中Android內(nèi)核可選選項(xiàng)
Device Drivers? ---> Android? ---> [*] RAM buffer console
Device Drivers? ---> Android? ---> [*] Android timed gpio driver
Device Drivers? ---> Android? ---> [*] Only allow certain groups to create sockets
(7) 其余CONFIG選項(xiàng)，如系統(tǒng)支持請(qǐng)一并選擇
CONFIG_ANDROID_POWER =y
CONFIG_ANDROID_POWER_STAT =y
CONFIG_ANDROID_POWER_ALARM =y
（可以在Kconfig文件中查找ANDROID_POWER等字段進(jìn)行選擇，或者直接修改.config文件）

13、退出并保存.config?

二、移植LCD驅(qū)動(dòng)到Linux-2.6.25內(nèi)核
1、 進(jìn)入kernel.git文件夾，如cd ~/kernel.git/
2、 修改arch/arm/mach-s3c2410/mach-smdk2410.c文件，如gedit arch/arm/mach-s3c2410/mach-smdk2410.c
(1) 增加頭文件#include
(2) 增加兩給結(jié)構(gòu)體
static struct s3c2410fb_display smdk2410_lcd_cfg __initdata = {
.lcdcon5 = S3C2410_LCDCON5_FRM565 |
S3C2410_LCDCON5_INVVLINE |
S3C2410_LCDCON5_INVVFRAME |
S3C2410_LCDCON5_PWREN |
S3C2410_LCDCON5_HWSWP,
.type = S3C2410_LCDCON1_TFT,
.width = 320,
.height = 240,
.pixclock = 174757,
.xres = 320,
.yres = 240,
.bpp = 16,
.left_margin = 16,
.right_margin = 59,
.hsync_len = 9,
.upper_margin = 2,
.lower_margin = 6,
.vsync_len = 16,
};

static struct s3c2410fb_mach_info smdk2410_fb_info __initdata = {
.displays = &smdk2410_lcd_cfg,
.num_displays = 1,
.default_display = 0,
.gpccon = 0xaa955699,
.gpccon_mask = 0xffc003cc,
.gpcup = 0x0000ffff,
.gpcup_mask = 0xffffffff,
.gpdcon = 0xaa95aaa1,
.gpdcon_mask = 0xffc0fff0,
.gpdup = 0x0000faff,
.gpdup_mask = 0xffffffff,
.lpcsel = 0xf82,
};
(3) 在smdk2410_init（）函數(shù)中增加s3c24xx_fb_set_platdata(&smdk2410_fb_info);?

三、移植觸摸屏驅(qū)動(dòng)到Linux-2.6.25內(nèi)核（參見(jiàn)《基于linux-2.26.5內(nèi)核的FS2410開(kāi)發(fā)板觸摸屏驅(qū)動(dòng)移植》）并制作zImage文件，如make
?????? 這里提一下，確保已經(jīng)勾選Device Drivers? ---> Input device support? ---> <*>?? Event interface，本人曾經(jīng)在這里徘徊，感謝游老師悉心教誨！?

四、制作支持ARMv4的Android根文件系統(tǒng)
1、從下載Android的ARMv4版本根文件
2、在/dev下增加null和console兩個(gè)設(shè)備節(jié)點(diǎn)
mknod -m 660 null c 1 3
mknod -m 660 console c 5 1
3、在U-boot中修改啟動(dòng)參數(shù)init為/init，完整的命令行如：root=nfs nfsroot=169.254.7.118:/source/rootfs ip=169.254.7.119 console=ttySAC0,115200 init=/init
4、修改/init.rc文件，去除除mount tmpfs tmpfs /sqlite_stmt_journals size=4m之外的所有mount命令
系統(tǒng)制作完成，現(xiàn)在應(yīng)該可以看到漂亮的大表了。首次啟動(dòng)需要?jiǎng)?chuàng)建文件，大約17分鐘。然后每次啟動(dòng)只需要2分鐘。