將Android移植到FS2410開發板上

admin @ 2014-03-25 , reply:0

一、目前進展
1.Android已經可以通過NFS在FS2410開發板上運行

二、目前缺陷
1.觸摸屏沒有校準
2.Android中時鐘停止,結束zygote進程,系統重啟,時鐘更新,但再次停止不動
3.串口無法與GPRS模塊通訊

三、移植步驟
一、移植Android內核到FS2410開發板上
1、從http://code.google.com/p/android/downloads/list上下載linux-2.6.25-android-1.0_r1.tar.gz

2、將內核解壓到用戶目錄,如/home/wangan/kernel.git

3、進入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分區設置,如gedit arch/arm/plat-s3c24xx/common-smdk.c
修改static struct mtd_partition smdk_default_nand_part[]結構體為:
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http://www.codesourcery.com/gnu_toolchains/arm/portal/release644網站上下載IA32 GNU/Linux TAR。

6、將文件解壓到用戶目錄,如/home/wangan/arm-2008q3

7、進入arm-2008q3/bin文件夾,如cd ~/arm-2008q3/bin/

8、添加當前路徑進入環境變數,如export PATH=$PWD:$PATH,或修改~/.bashrc文件並重新登錄

9、進入內核文件夾,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、從華清遠見Linux-2.6.8.1內核壓縮包中提取.config文件(注意:config前面有個“.”)放入kernel.git文件夾

12、運行make menuconfig
(1) 確保System Type  ---> ARM system type ()中的內容為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相關的內容
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相關的內容
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內核必須選項
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內核可選選項
Device Drivers  ---> Android  ---> [*] RAM buffer console
Device Drivers  ---> Android  ---> [*] Android timed gpio driver
Device Drivers  ---> Android  ---> [*] Only allow certain groups to create sockets
(7) 其餘CONFIG選項,如系統支持請一併選擇
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等欄位進行選擇,或者直接修改.config文件)

13、退出並保存.config 

二、移植LCD驅動到Linux-2.6.25內核
1、 進入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) 增加兩給結構體
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()函數中增加s3c24xx_fb_set_platdata(&smdk2410_fb_info); 

三、移植觸摸屏驅動到Linux-2.6.25內核(參見《基於linux-2.26.5內核的FS2410開發板觸摸屏驅動移植》)並製作zImage文件,如make
       這裡提一下,確保已經勾選Device Drivers  ---> Input device support  ---> <*>   Event interface,本人曾經在這裡徘徊,感謝游老師悉心教誨! 

四、製作支持ARMv4的Android根文件系統
1、從http://www.rayfile.com/files/d4660882-de04-11dd-af0d-0014221b798a/下載Android的ARMv4版本根文件
2、在/dev下增加null和console兩個設備節點
mknod -m 660 null c 1 3
mknod -m 660 console c 5 1
3、在U-boot中修改啟動參數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
系統製作完成,現在應該可以看到漂亮的大表了。首次啟動需要創建文件,大約17分鐘。然後每次啟動只需要2分鐘。




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