内核移植 nand分区
kernel：2.6.26.5
gcc：arm-linux-gcc （gcc 3.4.1）
cpu：s3c2410
编译设置 使用arm-linux-交叉编译工具链
修改根目录下
Makefile ARCH ?= arm
CROSS_COMPILE ?=arm-linux-
内核移植 nand分区
修改arch/arm/plat-s3c24xx/common-smdk.c，找到相关代码做如下修改
static struct mtd_partition smdk_default_nand_part[] = {
/* [0] = { .name = "Boot Agent", .size = SZ_16K, .offset = 0, },
[1] = { .name = "S3C2410 flash partition 1", .offset = 0, .size = SZ_2M, },
[2] = { .name = "S3C2410 flash partition 2", .offset = SZ_4M, .size = SZ_4M, },
[3] = { .name = "S3C2410 flash partition 3", .offset = SZ_8M, .size = SZ_2M, },
[4] = { .name = "S3C2410 flash partition 4", .offset = SZ_1M * 10, .size = SZ_4M, },
[5] = { .name = "S3C2410 flash partition 5", .offset = SZ_1M * 14, .size = SZ_1M * 10, },
[6] = { .name = "S3C2410 flash partition 6", .offset = SZ_1M * 24, .size = SZ_1M * 24, },
[7] = { .name = "S3C2410 flash partition 7", .offset = SZ_1M * 48, .size = SZ_16M,
}*/ /* start: for harbour */
[0] = { name: "bootloader", size: 0x00100000, offset: 0x0, },
[1] = { name: "kernel", size: 0x00300000, offset: 0x00100000, },
[2] = { name: "root", size: 0x02800000, offset: 0x00400000, },
[3] = { name: "user", size: 0x00f00000, offset: 0x02d00000, }
}; /* end: for harbour */
static struct s3c2410_nand_set smdk_nand_sets[] = {
[0] = { .name = "NAND", .nr_chips = 1, .nr_partitions = ARRAY_SIZE(smdk_default_nand_part), .partitions = smdk_default_nand_part, },
};
static struct s3c2410_platform_nand smdk_nand_info = {
.tacls = 0,
.twrph0 = 30,
.twrph1 = 0,
.nr_sets = ARRAY_SIZE(smdk_nand_sets),
.sets = smdk_nand_sets,
};
此时如果运行 #make s3c2410_defconfig 启用s3c2410默认内核配置
#make menuconfig
修改 boot option default command line root=/dev/mtdblock2 init=linuxrc console=ttySAC0,115200
运行 #make bzImage 此时的内核就可在板上跑通了。
触摸屏驱动移植
修改
arch/arm/mach-s3c2410/mach-smdk2410.c，
添加 static struct s3c2410ts_mach_info s3c2410_tscfg __initdata = {
.delay = 10000,
.presc = 49,
.oversampling_shift = 2,
};
修改
static struct platform_device *smdk2410_devices[] __initdata = {
&s3c_device_usb,
&s3c_device_lcd,
&s3c_device_wdt,
&s3c_device_i2c,
&s3c_device_iis,
/*start: for harbour*/
&s3c_device_ts, //加入此行
/*end: for harbour*/
};
在static void __init smdk2410_init(void)中加入： s3c24xx_ts_set_platdata(&s3c2410_tscfg);
在include/asm-arm/plat-s3c24xx/devs.h中加入 extern struct platform_device s3c_device_ts;
在driver/input/touchscreen/下添加s3c2410-ts.c文件，
在include/asm-arm/arch-s3c2410/下添加ts.h文件，
ts.h文件内容如下：
#ifndef __ASM_ARM_S3C2410_TS_H
#define __ASM_ARM_S3C2410_TS_H
struct s3c2410ts_mach_info { int delay; int presc; int oversampling_shift; };
extern void __init s3c24xx_ts_set_platdata(struct s3c2410ts_mach_info *);
#endif /* __ASM_ARM_S3C2410_TS_H */
修改arch/arm/plat-s3c24xx/devs.c，
加入
#include <asm/arch/ts.h> /* Touch Screen Controller */
struct platform_device s3c_device_ts = {
.name = "s3c2410-ts", .id = -1,
};
EXPORT_SYMBOL(s3c_device_ts);
void __init s3c24xx_ts_set_platdata(struct s3c2410ts_mach_info *pd) {
struct s3c2410ts_mach_info *npd;
npd = kmalloc(sizeof(*npd), GFP_KERNEL);
if (npd) {
memcpy(npd, pd, sizeof(*npd));
s3c_device_ts.dev.platform_data = npd;
}
else {
printk(KERN_ERR "no memory for TS platform data\n");
}
}
将s3c2410-ts.c文件拷入drivers/input/touchscreen/目录下。
修改drivers/input/touchscreen/Makefile 加入
obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410-ts.o
修改drivers/input/touchscreen/Kconfig，在if INPUT_TOUCHSCREEN下加入
config TOUCHSCREEN_S3C2410
tristate “s3c2410 touchscreen”
depends on ARCH_SMDK2410
default y
help This is used for supporting s3c2410 touchscreen.
LCD驱动移植
修改arch/arm/mach-s3c2410/mach-smdk2410.c，
添加
static struct s3c2410fb_display s3c2410fb_lcd_display __initdata = {
.width = 320, .height = 240, .xres = 320, .yres = 240, .bpp = 16, .lcdcon5 = S3C2410_LCDCON5_FRM565 | S3C2410_LCDCON5_INVVCLK | S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME | S3C2410_LCDCON5_HWSWP | (0<<7) | (0<<6) | (0<<1), .type =S3C2410_LCDCON1_TFT, .pixclock = 270000, .left_margin = 7, .right_margin = 8, .hsync_len = 29, .upper_margin = 11, .lower_margin = 14, .vsync_len = 2,
};
static struct s3c2410fb_mach_info s3c2410fb_lcdcfg __initdata = {
.displays = &s3c2410fb_lcd_display, .num_displays = 1, .default_display = 0, .lpcsel = 0x0, .gpccon = 0xaa9556a9, .gpccon_mask = 0xfffffff, .gpcup = 0xffffffff, .gpcup_mask = 0xffffffff, .gpdcon = 0xaaaaaaaa, .gpdcon_mask = 0xfffffff, .gpdup = 0xffffffff, .gpdup_mask = 0xffffffff,
};
在static void __init smdk2410_init(void)中加入：
s3c24xx_fb_set_platdata(&s3c2410fb_lcdcfg);
用提供的s3c2410fb.c 替换drivers/video/s3c2410fb.c.
声卡驱动移植 将s3c2410sound.c加到目录
/sound/oss下； 修改 sound/oss下的Kconfig文件： 在文件中添加：
Config S3C2410_SOUND_OSS
Tristate “S3C2410 1341 sound driver ”
修改/linux-2.6.14/sound/oss下的Makefile文件：
在文件中添加一行：
Obj-$(CONFIG_S3C2410_SOUND_OSS) += s3c2410sound.o
网卡（DM9000）驱动移植
修改arch/arm/mach-s3c2410/mach-smdk2410.c,找到如下代码修改：
#define pSMDK2410_ETH_IO (__phys_to_pfn(0x18000000))
static struct map_desc smdk2410_iodesc[] __initdata = {
/* start: for harbour */
{vSMDK2410_ETH_IO, pSMDK2410_ETH_IO, SZ_1M, MT_DEVICE},
/* end: for harbour */ };
在如下结构体中添加：
static struct platform_device *smdk2410_devices[] __initdata = { &s3c_device_dm9000, };
修改arch/arm/plat-s3c24xx/devs.c中添加：
#include <linux/dm9000.h>
#define DM9000A_BASE 0x18000300
#define DM9000A_OFFSET1 0x03
#define DM9000A_OFFSET2 0x04
static struct resource s3c_dm9000_resource[] = {
[0] = { .start = DM9000A_BASE, // 0x19000000 + 0x300, .end = DM9000A_BASE+DM9000A_OFFSET1,//0x19000000 + 0x300 + 0x03, .flags = IORESOURCE_MEM },
[1] = { .start = DM9000A_BASE+DM9000A_OFFSET2,//0x19000000 + 0x300 + 0x04, .end = DM9000A_BASE+DM9000A_OFFSET2+DM9000A_OFFSET1, //old is 7f 0x3f .flags = IORESOURCE_MEM },
[2] = { .start = IRQ_EINT19, .end = IRQ_EINT19, .flags = IORESOURCE_IRQ,//|IORESOURCE_IRQ_LOWEDGE, }
};
static struct dm9000_plat_data s3c_device_dm9000_platdata = {
.flags = DM9000_PLATF_16BITONLY,
};
struct platform_device s3c_device_dm9000 = {
.name= "dm9000", .id= -1,
.num_resources= ARRAY_SIZE(s3c_dm9000_resource),
.resource= s3c_dm9000_resource,
.dev= { .platform_data = &s3c_device_dm9000_platdata, }
};
EXPORT_SYMBOL(s3c_device_dm9000);
修改drivers/net/dm9000.c: 用提供的dm9000.c替换原有的文件。
文件系统建立 利用原来的rootfs文件目录，在dev目录下建立设备文件，
#mknod console c 5 1
#mknod null c 1 3
#mknod zero c 1 5
#mkdir input
#mknod mice c 13 63
#mknod mouse0 c 13 32
#mknod event0 c 13 64
#mkdir mtdblock
#mknod 0 b 31 0
#mknod 1 b 31 1
#mknod 2 b 31 2
#mknod 3 b 31 3
#mkdir vc
#mknod 0 c 4 0
#mknod 1 c 4 1
#mknod 2 c 4 2
#mkdir tts
#mknod 0 c 204 64
#mknod 1 c 204 65
#mknod 2 c 204 66
#mkdir shm
#mkdir usb
其他的文件可根据需要如此添加，由于cramfs为只读文件系统，2.6.26.5内核去掉了devfs，所以要在文件系统中建立好需要的文件节点，或者是将dev目录挂载成可读写文件系统，使用udev来添加设备节点。
修改
usr/etc/rc.local
注释掉 rm –r /dev/ts ln –sf /dev/input/mouse0 /dev/ts
目的是为了消除一条错误提示信息。
内核配置 修改内核源码根目录下的Makefile，
ARCH ?= arm CROSS_COMPILE ?= arm-linux-
直接使用内核中专门为s3c2410提供的配置文件，
在arch/arm/configs下 #make s3c2410_defconfig
#make menuconfig 进行其他配置 添加tmpfs支持
File systems -> Pseudo filesystems >
[*] Virtual memory file system support (former shm fs) 这样就可以将tmpfs进行挂载，来开辟出可写的目录。
选中触摸屏接口
Device Drivers-> Input device support -> [*]Event interface
2.6.26.5内核用event接口取代了原来的tsdev接口，因此此处应选中event interface。
