魅族官方提供了M8的Android内核源码,包含了完整的驱动以及说明,由于MEIZU M8的物理硬件和iPhone一样平时操作的只有1个Home键无法模拟,Android的Back、Menu以及其他因素魅族放弃了M8跑Android的计划。由于M8使用的是Samsung ARM11内核的S3C6410工作频率为667MHz,山寨厂商有一定的借鉴价值。
有关魅族M8的ADB驱动 http://m8-android-kernel.googlecode.com/files/M8_6410_adb_driver.rar
M8的Android编译好固件下载,刷机方法和Wince的一致,下载后直接解压放到USB Storage的根目录 http://code.google.com/p/m8-android-kernel/source/browse/bin/m8_android.rar
M8 for Android源码托管在Google Code上面,使用SVN工具直接提取 浏览地址 http://code.google.com/p/m8-android-kernel/source/browse/#svn/trunk 需要注意的是Android开发网发现有关Modem这块代码没有,涉及到了英飞凌的机密,不过可以看到编译好的库,直接挂上即可。
SVN Checkout地址 http://m8-android-kernel.googlecode.com/svn/trunk
最后是Android123找到的有关M8的移植文章网上整理的word文档,有兴趣的网友可以DIY下,不过Android开发网表示Android和M8原始的Wince比较差距较大,个人还是建议使用完善的WinCE系统,毕竟可以直播RMVB、WinCE对于M8更适合些。
1. make menuconfig
A. 串口改成串口3输出打印信息。
(一) (root=/dev/nfs init=/init nfsroot=192.168.1.10:/nfs ip=192.168.1.100 console=ttySAC2,115200
console=ttySAC2,串口2输出,必须与下面同时修改
(二) System Type —>S3C UART to use for low-level messages—>2
值设成2,即串口2输出,必须与上面同时修改。
B. Onenand驱动支持
(一) Device Drivers —>Memory Technology Device (MTD) support —>OneNAND Device Support —>
[*] Verify OneNAND page writes
<*> OneNAND Flash device via platform device driver
(二) onenand的支持
从贺超提供的linux2.6.27包drivers\mtd\onenand目录复制s3c6410.h,s3c_onenand.c,s3c_onenand.h提供对三星onenand的支持
(三) Makefile修改
drivers\mtd\onenand\Makefile文件最后添加一行:onenand-objs = s3c_onenand.o,编译s3c_onenand.o,连接进内核。
(四) 在arch\arm\mach-s3c6410\mach-smdk6410.c中
static struct platform_device pmem_gpu1_device = {
.name = “android_pmem”,
.id = 1,
.dev = { .platform_data = &pmem_gpu1_pdata },
};
#endif
的后面添加代码:
/*add by liuyihui 2009-08-21*/
/*
*添加onenand驱动支持
*/
/* OneNAND Controller */
/* OneNAND flash controller */
#define S3C64XX_PA_ONENAND (0x70100000)
#define S3C64XX_SZ_ONENAND SZ_1M
static struct resource s3c_onenand_resource[] = {
[0] = {
.start = S3C64XX_PA_ONENAND,
.end = S3C64XX_PA_ONENAND + S3C64XX_SZ_ONENAND – 1,
.flags = IORESOURCE_MEM,
}
};
或者替换新的代码:
arch\arm\plat-s3c64xx\devs.c,
linux/arch/arm/mach-s3c6400/include/mach/map.h
struct platform_device s3c_device_onenand = {
.name = “onenand”,
.id = -1,
.num_resources = ARRAY_SIZE(s3c_onenand_resource),
.resource = s3c_onenand_resource,
.dev.platform_data = &s3c_nand_mtd_part_info
};
/*add end*/
在数组static struct platform_device *smdk6410_devices[] __initdata = {的最后添加:
&s3c_device_onenand /*add by liuyihui 2009-08-21*/
(五) 分区表修改:使userdata从0x0a000000开始
文件linux/arch/arm/plat-s3c/include/plat/partition.h中:
{
.name = “cache”,
.offset = MTDPART_OFS_APPEND,
.size = (67*SZ_1M)+0x1000000,//orig:(67*SZ_1M)/*modified by cefanty 2009-08-21*/
},
(六) 修改drivers\mtd\onenand\generic.c
复制drivers\mtd\onenand\generic.c替换掉。
C. Device Drivers —>Input device support —> [] Keyboards —>
(一) 暂时去掉键盘支持,因为键盘占用了GPK14口,GPK14口在M8是USB供电开关的GPIO,拉高才能用USB
D. Device Drivers —> [*] USB support —> <*> USB Gadget Support —>
(一) <*> USB Gadget Drivers (Ethernet Gadget (with CDC Ethernet supp
(二) Ethernet Gadget (with CDC Ethernet support)
(三) [ ] RNDIS support
(四) d.1)选择Ethernet Gadget (with CDC Ethernet supp,用于把M8模拟成网卡,实现nfs挂载系统。同时去掉RNDIS support支持,因为ubuntu下没有驱动支持。
(五) drivers\usb\gadget\s3c-udc-otg-hs.c修改为USB使用外部晶振
//writel(0x20, S3C_USBOTG_PHYCLK); /*commented by liuyihui 2009-08-24*/
writel(0x00, S3C_USBOTG_PHYCLK); /*00:USB使用外部晶振。modified by liuyihui 2009-08-24*/
2. 驱动移植和修改
A. LCD驱动移植
i. drivers\video\Kconfig,搜索config FB_S3C_LTS222QV,在后面添加如下选项
config FB_S3C_LMS340KC01
bool “LMS340KC01”
—help—
TBA
ii. 添加驱动:drivers\video\samsung\s3cfb_lms340kc01.c
a) 复制刘奕辉开发的s3cfb_lms340kc01.c驱动到目录drivers\video\samsung\
b) 在drivers\video\samsung\Makefile文件最后添加内容:
obj-$(CONFIG_FB_S3C_LMS340KC01) += s3cfb_lms340kc01.o
iii. 修改drivers\video\samsung\s3cfb_fimd4x.c,在函数s3cfb_set_gpio最后注释代码,添加:
#if 0/*commented by liuyihui 2009-08-24*/
/* module reset */
if (gpio_is_valid(S3C64XX_GPN(5))) {
err = gpio_request(S3C64XX_GPN(5), “GPN”);
if (err) {
printk(KERN_ERR “failed to request GPN for ”
“lcd reset control\n”);
return err;
}
gpio_direction_output(S3C64XX_GPN(5), 1);
}
mdelay(100);
gpio_set_value(S3C64XX_GPN(5), 0);
mdelay(10);
gpio_set_value(S3C64XX_GPN(5), 1);
mdelay(10);
gpio_free(S3C64XX_GPF(15));
gpio_free(S3C64XX_GPN(5));
#endif
/*add by liuyihui 2009-08-24*/
/*
*打开M8 LCD需要用到的GPIO口
*/
#if 1 //M8 GPIO set hight
/* module reset *///LCD_nRESET_SHIFT/*4*/
if (gpio_is_valid(S3C64XX_GPQ(4))) {
err = gpio_request(S3C64XX_GPQ(4), “GPQ”);
if (err) {
printk(KERN_ERR “failed to request GPQ for ”
“lcd reset control\n”);
return err;
}
gpio_direction_output(S3C64XX_GPQ(4), 1);
}
mdelay(100);
gpio_free(S3C64XX_GPQ(4));
/* module reset *///LCD_nSS_SHIFT/*5*/
if (gpio_is_valid(S3C64XX_GPQ(5))) {
err = gpio_request(S3C64XX_GPQ(5), “GPQ”);
if (err) {
printk(KERN_ERR “failed to request GPQ for ”
“lcd reset control\n”);
return err;
}
gpio_direction_output(S3C64XX_GPQ(5), 0);
}
mdelay(100);
gpio_free(S3C64XX_GPQ(5));
/* module reset *///LCD_MOSI_SHIFT/*7*/
if (gpio_is_valid(S3C64XX_GPQ(6))) {
err = gpio_request(S3C64XX_GPQ(6), “GPQ”);
if (err) {
printk(KERN_ERR “failed to request GPQ for ”
“lcd reset control\n”);
return err;
}
gpio_direction_output(S3C64XX_GPQ(6), 1);
}
mdelay(100);
gpio_free(S3C64XX_GPQ(6));
/* module reset *///LCD_MOSI_SHIFT/*7*/
if (gpio_is_valid(S3C64XX_GPQ(7))) {
err = gpio_request(S3C64XX_GPQ(7), “GPQ”);
if (err) {
printk(KERN_ERR “failed to request GPQ for ”
“lcd reset control\n”);
return err;
}
gpio_direction_output(S3C64XX_GPQ(7), 1);
}
mdelay(100);
gpio_free(S3C64XX_GPQ(7));
/* module reset *///LCD_CLK_SHIFT/*8*/
if (gpio_is_valid(S3C64XX_GPQ(8))) {
err = gpio_request(S3C64XX_GPQ(8), “GPQ”);
if (err) {
printk(KERN_ERR “failed to request GPQ for ”
“lcd reset control\n”);
return err;
}
gpio_direction_output(S3C64XX_GPQ(8), 1);
}
mdelay(100);
gpio_free(S3C64XX_GPQ(8));
#endif
return 0;
}
/*add end*/
c)
iv. 修改drivers\video\samsung\s3cfb_spi.c,在函数s3cfb_set_gpio最后注释代码,添加:
在代码#elif defined(CONFIG_PLAT_S3C64XX)后面添加:
#define MEIZU_M8
#ifdef MEIZU_M8
#define S3C_FB_SPI_CLK(x) (S3C64XX_GPQ(8 + ( 4)))
#define S3C_FB_SPI_MOSI(x) (S3C64XX_GPQ(7 + (4)))
#define S3C_FB_SPI_CS(x) (S3C64XX_GPQ(6 + (4)))
#else
#define S3C_FB_SPI_CLK(x) (S3C64XX_GPC(1 + (ch * 4)))
#define S3C_FB_SPI_MOSI(x) (S3C64XX_GPC(2 + (ch * 4)))
#define S3C_FB_SPI_CS(x) (S3C64XX_GPC(3 + (ch * 4)))
#endif
B. 触摸屏移植
drivers\input\touchscreen:synaptics510_i2c.c,synaptics510_i2c.h,Makefile,Kconfig
C. 按键移植
覆盖如下文件:目录drivers\input\keyboard\下的:gpio_keys.c
3. Busybox在Android上的使用
To build busybox
• Download the latest version of busybox from the following website. At the time of writing the latest version was v.1.13.3.
http://www.busybox.net
• Extract the busybox source:
tar jxf busybox-1.13.3.tar.bz2
• Configure busybox by running menuconfig
cd busybox-1.13.3/
make menuconfig
• In menuconfig set the following options
Busybox Settings –> Build Options –> Build Busybox as a static binary (no shared libs) – Enable this option by pressing “Y”
Busybox Settings –> Build Options –> Cross compiler prefix – Set this option equal to “arm-none-linux-gnueabi-”
Busybox Settings –> Installation Options –> Don’t use /usr – Enable this option by pressing “Y”
Linux Module Utilities —> [ ] Simplified modutils 这项不能选,否则insmod 驱动模块加载会提示找不到*.ko驱动文件的路径
• Export path to where the cross-compiler is located on the host, for example:
export PATH=/opt/arm/arm-2007q3/bin:$PATH
• Build busybox
make
Installing Busybox
________________________________________
To install busybox in the target file-system
• Create a /bin directory in the target file-system. For example:
mkdir /<path-to-android-fs>/bin
• Copy the busybox binary to the /bin directory in the target file-system
cp busybox /<path-to-android-fs>/bin
• Install the busybox command line tools on the target by executing the following commands:
cd /bin
./busybox –install
Make the Busybox shell the default shell
________________________________________
To make the busybox shell the default shell, edit the file “init.rc” in the target file-system as follows:
• Edit the console service so that it runs the busybox shell and not the default shell by replacing:
service console /system/bin/sh
With:
service console /bin/sh
• Add the path of the busybox command line tools to the system path variable by replacing:
export PATH /sbin:/system/sbin:/system/bin:/system/xbin
With
export PATH /bin:/sbin:/system/sbin:/system/bin:/system/xbin
Android cupcake 1.5版移植
1. 在Android挂载SD移植
cupcake 1.5版需要改写下列文件。
A. 编译mountd,并在文件系统中启动这一服务。
修改 system/core/mountd/Android.mk文件,开放最后一行
# disabled – we are using vold now instead
# include $(BUILD_EXECUTABLE)
为:
# disabled – we are using vold now instead
include $(BUILD_EXECUTABLE)
B. 增加 安装mountd.conf 文件
修改 system/core/rootdir/init.rc文件
释放下两行:
service mountd /system/bin/mountd
socket mountd stream 0660 root mount
C. 修改 system/core/rootdir/Android.mk 文件, 增加 etc/mountd.conf \,如下:
copy_from := \
etc/dbus.conf \
etc/init.goldfish.sh \
etc/mountd.conf \
etc/hosts
D. 修改根文件系统的system\etc \mountd.conf文件:
block_device /dev/block/mmcblk0