linux-2.6.36.4移栽到TQ2440

linux-2.6.36.4移植到TQ2440

一、内核配置和编译

1．修改顶层Makefile

ARCH ?= arm

CROSS_COMPILE ?= arm-linux- 根据自己的环境修改交叉编译器前缀

2．修改arch/arm/boot/Makefile增加一行

@echo ' Kernel: $@ is ready'

cp $@ /tftpboot/ 根据自己的ftp服务器目录修改

3．匹配机器码

1) 启动u-boot执行bdinfo将输出开发板的相关信息，包括机器码

TQ2440 # bd

arch_number = 0x0000016A 机器码362

boot_params = 0x30000100

DRAM bank = 0x00000000

-> start = 0x30000000

-> size = 0x04000000

ethaddr = 00:01:02:03:04:05

ip_addr = 192.168.1.100

baudrate = 115200 bps

TLB addr = 0x33FF0000

relocaddr = 0x33F40000

reloc off = 0x33F40000

irq_sp = 0x33B2FF68

sp start = 0x33B2FF58

FB base = 0x00000000

TQ2440 #

2) 新版u-boot可以设置环境变量machid来更改机器码

TQ2440 # set machid 0x16A

3) 内核机器码：arch/arm/mach-s3c2440/mach-smdk2440.c

MACHINE_START(S3C2440,"SMDK2440")

其中的S3C2440即为机器码

再查看arch/arm/tools/mach-types 第379行即为S3C2440所对应的机器码362，必须和u-boot的机器码相同，否则没法启动内核

4．修改系统时钟

arch/arm/mach-s3c2440/mach-smdk2440.c我们的开发板使用12MHZ

s3c24xx_init_clocks(12000000);

5．执行默认配置

root@zjh:/home/work/linux-2.6.36.4#make s3c2410_defconfig

6．配置内核

root@zjh:/home/work/linux-2.6.36.4#make menuconfig

Kernel Features --->

[*] Use the ARM EABI tocompile the kernel

[*] Allow old ABI binaries to run with thiskernel (EXPERIMENTAL)

注：使用4.X.X版本的交叉编译器一定要选中以上两项，否则会出现Kernel panic - not syncing:Attempted to kill init!这样的错误以致没法启动内核

System Type --->

S3C2440 and S3C2442Machines --->

[*]SMDK2440

[*]SMDK2440 with S3C2440 CPU module

只选中这两项即可，其他的Machine都取消

7．编译内核

root@zjh:/home/work/linux-2.6.36.4#make zImage

…………

OBJCOPY arch/arm/boot/zImage

Kernel: arch/arm/boot/zImage is ready

ImageName: linux-2.6.36

Created: Wed Oct 17 12:42:19 2012

ImageType: ARM Linux Kernel Image(uncompressed)

DataSize: 2075944 Bytes = 2027.29 kB =1.98 MB

Load Address:30008000

EntryPoint: 30008000

8．启动u-boot，执行如下操作

TQ2440 # tftp30000000 uImage

TQ2440 # bootm30000000

## Booting imageat 30000000 ...

Image Name: linux-2.6.36

Created: 2012-10-17 4:33:02 UTC

Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 2075944 Bytes = 2 MB

Load Address: 30008000

Entry Point: 30008000

Verifying Checksum ... OK

XIP Kernel Image ... OK

Startingkernel ...

UncompressingLinux... done, booting the kernel.

Linux version2.6.36.4 (root@zjh) (gcc version 4.4.3 (ctng-1.6.1) ) #4 Wed Oct 17 12:32:51CST 2012

CPU: ARM920T[41129200] revision 0 (ARMv4T), cr=c0007177

CPU: VIVT datacache, VIVT instruction cache

Machine:SMDK2440

Memory policy:ECC disabled, Data cache writeback

CPU S3C2440A(id 0x32440001)

S3C244X: core400.000 MHz, memory 100.000 MHz, peripheral 50.000 MHz…………

二、DM9000网卡驱动移植

1．修改arch/arm/mach-s3c2440/mach-smdk2440.c，构—M9000平台设备

#include <linux/dm9000.h>

#define MACH_TQ2440_DM9K_BASE (S3C2410_CS4 + 0x300)

static struct resource TQ2440_dm9k_resource[] = {

[0] = {

.start =MACH_TQ2440_DM9K_BASE,

.end = MACH_TQ2440_DM9K_BASE + 3,

.flags =IORESOURCE_MEM

[1] = {

.start =MACH_TQ2440_DM9K_BASE + 4,

.end = MACH_TQ2440_DM9K_BASE + 7,

.flags =IORESOURCE_MEM

[2] = {

.start =IRQ_EINT7,

.end = IRQ_EINT7,

.flags =IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,

}

};

* The DM9000 has noeeprom, and set it's MAC address

static struct dm9000_plat_data TQ2440_dm9k_pdata = {

.flags = (DM9000_PLATF_16BITONLY |DM9000_PLATF_NO_EEPROM),

.dev_addr = "\x00\x11\x22\x33\x44\x66",

};

static struct platform_device TQ2440_device_eth = {

.name = "dm9000",

.id = -1,

.num_resources = ARRAY_SIZE(TQ2440_dm9k_resource),

.resource = TQ2440_dm9k_resource,

.dev = {

.platform_data = &TQ2440_dm9k_pdata,

};

smdk2440_devices[]结构体数组添加如下代码

&TQ2440_device_eth

2．修改drivers/net/ethernet/davicom/dm9000.c第44行加入如下代码

#include"dm9000.h"

#ifdefined(CONFIG_ARCH_S3C2440)

#include<mach/regs-mem.h>

#endif

第1375行加入如下代码

u32 id_val;

#ifdefined(CONFIG_ARCH_S3C2440)

unsigned int oldval_bwscon = *(volatileunsigned int *)S3C2410_BWSCON;

unsigned int oldval_bankcon4 = *(volatile unsigned int *)S3C2410_BANKCON4;

#endif

/* Init network device */

第1387行加入如下代码

dev_dbg(&pdev->dev,"dm9000_probe()\n");

#ifdefined(CONFIG_ARCH_S3C2440)

/* 设置Bank4：总线宽度为16，使能nWAIT */

*((volatile unsigned int *)S3C2410_BWSCON) =(oldval_bwscon & ~(3<<16)) |

S3C2410_BWSCON_DW4_16| S3C2410_BWSCON_WS4 | S3C2410_BWSCON_ST4;

/* 设置Bandk4的时间参数 */

*((volatile unsigned int *)S3C2410_BANKCON4)= 0x1f7c;

#endif

/* setup board info structure */

第1615行

out:

/* 恢复寄存器原来的值 */

#ifdefined(CONFIG_ARCH_S3C2440)

*(volatile unsigned int *)S3C2410_BWSCON =oldval_bwscon;

*(volatile unsigned int *)S3C2410_BANKCON4 =oldval_bankcon4;

#endif

3．配置内核支持DM9000

root@zjh:/home/work/linux-2.6.36.4#make menuconfig

[*] Networkingsupport --->

Networkingoptions --->

<*>Packet socket

<*> Unixdomain socket

[*] TCP/IPnetworking

[*] IP: multicasting

[*] IP: kernel level autoconfiguration

[*] IP: BOOTP support

Device Drivers --->

[*] Network device support --->

[*] Ethernet (10 or 100Mbit) --->

<*> DM9000 support

File systems --->

[*] Network File Systems (NEW) --->

<*> NFS client support

[*] NFS client support for NFS version 3 (NEW)

[*] NFS client support for the NFSv3 ACL protocol extension

[*] Root file system on NFS

4．重新编译内核并设置u-boot启动参数，通过NFS挂载根文件系统

TQ2440 # setbootargs root=/dev/nfs nfsroot=192.168.1.8:/home/work/rootfs ip=192.168.1.100init=/linuxrc console=ttySAC0,115200

TQ2440 # save

5．下载内核并启动

TQ2440 # tftp30000000 uImage

TQ2440 # bootm30000000

………………

[root@tq2440/]#

三、移植内核自带的LED驱动

1．在BSP文件arch/arm/mach-s3c2440/mach-smdk2440.c增加我们开发板的LED配置

#include<linux/leds.h>

staticstruct gpio_led tq2440_leds[] = {

[0] = {

.name = "led1",

.gpio = S3C2410_GPB(5),

.active_low = 1,

[1] = {

.name = "led2",

.gpio = S3C2410_GPB(6),

.active_low = 1,

[2] = {

.name = "led3",

.gpio = S3C2410_GPB(7),

.active_low = 1,

[3] = {

.name = "led4",

.gpio = S3C2410_GPB(8),

.active_low = 1,

}

};

staticstruct gpio_led_platform_data tq2440_leds_pdata = {

.num_leds =ARRAY_SIZE(tq2440_leds),

.leds =tq2440_leds,

};

staticstruct platform_device tq2440_device_leds = {

.name ="leds-gpio",

.id =-1,

.dev ={

.platform_data =&tq2440_leds_pdata,

};

在smdk2440_devices[]平台数组中添加

&tq2440_device_leds,

2．配置内核

DeviceDrivers --->

-*- LEDSupport --->

<*> LED Class Support

<> LED Support for Samsung S3C24XXGPIO LEDs

<*> LED Support for GPIO connected LEDs

[*] Platform device bindings for GPIO LEDs

3．重新编译内核

[root@tq2440 /]#ll /sys/class/leds/

total 0

drwxr-xr-x 3 root root 0 Jan 1 00:00 led1

drwxr-xr-x 3 root root 0 Jan 1 00:00 led2

drwxr-xr-x 3 root root 0 Jan 1 00:00 led3

drwxr-xr-x 3 root root 0 Jan 1 00:00 led4

[root@tq2440 /]#echo 1 > sys/class/leds/led1/brightness 点亮LED1

[root@tq2440 /]#echo 0 > sys/class/leds/led1/brightness 熄灭LED1

四、RTC驱动移植

1．在arch/arm/mach-s3c2440/mach-smdk2440.c的smdk2440_devices[]结构体数组添加rtc平台设备列表

&s3c_device_rtc,

2．配置内核

DeviceDrivers --->

[*] Real Time Clock --->

[*] Set system time from RTC on startup and resume (NEW)

(rtc0) RTC used to set the system time

[*] /sys/class/rtc/rtcN (sysfs) (NEW)

[*] /proc/driver/rtc (procfs for rtc0) (NEW)

[*] /dev/rtcN (character devices) (NEW)

<*> Samsung S3C series SoC RTC

3．重新编译内核并下载到开发板

[root@tq2440 /]#date

Thu Jan 1 00:09:48 UTC 1970

[root@tq2440 /]#date -s 2012.10.17-22:30:0 设置时间

Wed Oct 1722:30:00 UTC 2012

[root@tq2440 /]#hwclock -w 设置硬件时间为当前系统时间

这样系统重启后会自动更新到硬件时间

五、LCD驱动移植

1．在arch/arm/mach-s3c2440/mach-smdk2440.c中修改LCD参数

.width = 480,

.height =272,

.pixclock =((2 * 1000000000000LL)/(60 * (2 + 2 + 41 + 480) * (2 + 2 + 10 + 272))),

.xres =480,

.yres =272,

.bpp =16,

.left_margin = 2,

.right_margin = 2,

.hsync_len = 41,

.upper_margin = 2,

.lower_margin = 2,

.vsync_len = 10,

将下面这行注释掉

//.lpcsel =((0xCE6) & ~7) | 1<<4, /* lpc3600 control register */

2．在arch/arm/mach-s3c2440/mach-smdk2440.c的smdk2440_devices[]结构体数组中已经有lcd设备

&s3c_device_lcd,

3．配置内核

DeviceDrivers --->

Graphicssupport --->

<*> Supportfor frame buffer devices --->

<*> S3C2410 LCD framebuffer support

[*] Bootup logo --->

[ ] Standard black and white Linux logo

[ ] Standard 16-color Linux logo

[*] Standard 224-color Linux logo (NEW)

4．重新编译内核

将看到LCD显示开机logo

5．解决10分钟后黑屏：修改drivers/char/vt.c

可修改staticint blankinterval = 10*60;

默认为10分钟后LCD背光就自动关闭，当发生中断就会开启，改为0，LCD就常亮。

6．关闭光标:修改/drivers/video/console/softcursor.c

intsoft_cursor(struct fb_info *info, struct fb_cursor *cursor)

{

#if 0

struct fbcon_ops *ops =info->fbcon_par;

unsigned int scan_align =info->pixmap.scan_align - 1;

unsigned int buf_align =info->pixmap.buf_align - 1;

unsigned int i, size, dsize, s_pitch,d_pitch;

struct fb_image *image;

u8 *src, *dst;

if (info->state !=FBINFO_STATE_RUNNING)

return 0;

s_pitch = (cursor->image.width + 7)>> 3;

dsize = s_pitch *cursor->image.height;

if (dsize + sizeof(struct fb_image) !=ops->cursor_size) {

if (ops->cursor_src != NULL)

kfree(ops->cursor_src);

ops->cursor_size = dsize +sizeof(struct fb_image);

ops->cursor_src =kmalloc(ops->cursor_size, GFP_ATOMIC);

if (!ops->cursor_src) {

ops->cursor_size = 0;

return -ENOMEM;

}

src = ops->cursor_src + sizeof(structfb_image);

image = (struct fb_image*)ops->cursor_src;

*image = cursor->image;

d_pitch = (s_pitch + scan_align) &~scan_align;

size = d_pitch * image->height +buf_align;

size &= ~buf_align;

dst = fb_get_buffer_offset(info,&info->pixmap, size);

if (cursor->enable) {

switch (cursor->rop) {

case ROP_XOR:

for (i = 0; i < dsize;i++)

src[i] =image->data[i] ^ cursor->mask[i];

break;

case ROP_COPY:

default:

for (i = 0; i < dsize;i++)

src[i] =image->data[i] & cursor->mask[i];

break;

}

} else

memcpy(src, image->data,dsize);

fb_pad_aligned_buffer(dst, d_pitch, src,s_pitch, image->height);

image->data = dst;

info->fbops->fb_imageblit(info,image);

#endif

return 0;

}

六、触摸屏驱动移植

1．在BSP文件加入头文件

#include<plat/ts.h>

2．加入触摸屏数据

staticstruct s3c2410_ts_mach_info hard_s3c2410ts_info = {

.delay = 0xffff,

.oversampling_shift = 2,

.cfg_gpio = s3c24xx_ts_cfg_gpio,

};

3．添加触摸屏和ADC平台设备列表，ADC一定要在TS前面

&s3c_device_adc,

&s3c_device_ts,

4．加入如下函数，这个函数将上面加入的结构体设为触摸屏设备的 s3c_device_ts.dev.platform_data

static void__init smdk2440_machine_init(void)

{

s3c24xx_fb_set_platdata(&smdk2440_fb_info);

s3c_i2c0_set_platdata(NULL);

s3c24xx_mci_set_platdata(&sd_cfg);

s3c24xx_ts_set_platdata(&hard_s3c2410ts_info);

platform_add_devices(smdk2440_devices,ARRAY_SIZE(smdk2440_devices));

smdk_machine_init();

}

5．修改arch/arm/plat-s3c24xx/Kconfig

configS3C2410_SETUP_TS

bool "Touchscreensetup"

6．配置内核

System Type --->

[*] Touchscreensetup

Device Drivers --->

Input device support --->

[*] Touchscreens --->

<*> Samsung S3C2410/generic touchscreen input driver

7．重新编译内核

启动时输出

samsung-tss3c2440-ts: driver attached, registering input device

input: S3C24XXTouchScreen as /class/input/input1

8．编写用户空间测试程序

#include <sys/types.h>

#include<sys/stat.h>

#include<stdio.h>

#include<fcntl.h>

#include<signal.h>

#include<unistd.h>

#include<linux/input.h>

#include<stdlib.h>

#include<string.h>

int fd;

structinput_event event;

voidinput_handle(int signum)

{

if (read(fd, &event, sizeof(structinput_event))< 0) {

perror("read");

}

printf("tv_sec:%d\n",event.time.tv_sec);

printf("tv_usec:%d\n",event.time.tv_usec);

printf("type:%d\n",event.type);

printf("code:%d\n",event.code);

printf("value:%d\n",event.value);

}

int main()

{

int oflags;

fd = open("/dev/event1",O_RDWR, S_IRUSR|S_IWUSR);

if (fd != -1) {

signal(SIGIO, input_handle);

fcntl(fd, F_SETOWN, getpid());

oflags = fcntl(fd, F_GETFL);

fcntl(fd, F_SETFL, oflags|FASYNC);

while (1) {

sleep(100);

}

else

printf("err\n");

}

七、WDT看门狗驱动移植

1．在arch/arm/mach-s3c2440/mach-smdk2440.c已经添加了wdt平台设备列表

&s3c_device_wdt,

2．修改drivers/watchdog/s3c2410_wdt.c第51行启动看门狗

#defineCONFIG_S3C2410_WATCHDOG_ATBOOT (1) //启动看门狗

#defineCONFIG_S3C2410_WATCHDOG_DEFAULT_TIME (15) //超时值15s

3．配置内核

Device Drivers --->

[*] WatchdogTimer Support --->

<*> S3C2410 Watchdog

4．重新编译内核并下载到开发板，串口输出：

s3c2410-wdts3c2410-wdt: >starting watchdog timer

s3c2410-wdts3c2410-wdt: >watchdog active, reset enabled, irq disabled

此时由于没有喂狗，系统启动后过会会自动重启

5．编写喂狗程序feed_wdt.c

#include<stdlib.h>

#include<sys/types.h>

#include<sys/stat.h>

#include<fcntl.h>

#include<linux/watchdog.h>

int main()

{

int fd;

if ((fd = open("/dev/watchdog",O_RDONLY))< 0)

{

perror("open");

exit(1);

}

for (;;)

{

ioctl(fd, WDIOC_KEEPALIVE);

sleep(3);

}

close(fd);

return 0;

}

6．交叉编译feed_wdt.c

root@zjh://home/work#arm-linux-gcc -static feed_wdt.c -o feed_wdt

将生成的可执行文件feed_wdt拷贝到根文件系统/bin目录下

root@zjh://home/work#cp feed_wdt rootfs/bin/

7．修改启动脚本文件rootfs/etc/init.d/rcS

#!/bin/sh

#This is thefirst script called by init process

mount -a

mkdir /dev/pts

mount -t devptsdevpts /dev/pts

echo/sbin/mdev>/proc/sys/kernel/hotplug

mdev -s

feed_wdt&

ifconfig lo127.0.0.1

ifconfig eth0192.168.1.100 netmask 255.255.255.0

route add defaultgw 192.168.1.1

八、按键输入子系统移植

1．arch/arm/mach-s3c2440/mach-smdk2440.c加入按键相关platform代码

#include<linux/gpio_keys.h>

#include<linux/input.h>

staticstruct gpio_keys_button tq2440_buttons[] = {

{

.gpio = S3C2410_GPF(1),

.code = KEY_UP,

.desc = "Up",

.active_low = 1,

.wakeup = 0,

{

.gpio = S3C2410_GPF(4),

.code = KEY_DOWN,

.desc = "Down",

.active_low = 1,

.wakeup = 0,

{

.gpio = S3C2410_GPF(2),

.code = KEY_LEFT,

.desc = "Left",

.active_low = 1,

.wakeup = 0,

{

.gpio = S3C2410_GPF(0),

.code = KEY_RIGHT,

.desc = "Right",

.active_low = 1,

.wakeup = 0,

}

};

staticstruct gpio_keys_platform_data tq2440_button_data = {

.buttons = tq2440_buttons,

.nbuttons = ARRAY_SIZE(tq2440_buttons),

};

staticstruct platform_device tq2440_device_button = {

.name ="gpio-keys",

.id =-1,

.dev ={

.platform_data=&tq2440_button_data,

};

在smdk2440_devices[]中加入platform设备

&tq2440_device_button,

2．配置内核

Device Drivers --->

Input devicesupport --->

[*] Keyboards --->

<*> GPIO Buttons

3．重新编译内核

4．编写用户空间测试程序gpio_button.c

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <linux/input.h>

#include <sys/fcntl.h>

int main(int argc, char *argv[])

{

int fd =-1;

int num;

size_t rb;

intversion;

charname[20];

structinput_event ev;

if ((fd =open("/dev/event0", O_RDONLY)) < 0)

{

perror("openerror");

exit(1);

}

if(ioctl(fd, EVIOCGNAME(sizeof(name)-1), name) < 0)

{

perror("getnameerror");

exit(1);

}

//printf("name=%s\n",name);

if(ioctl(fd, EVIOCGVERSION, &version) < 0)

{

perror("getversionerror");

exit(1);

}

//printf("version=0x%x\n",version);

while(1)

{

rb= read(fd, &ev, sizeof(struct input_event));

if(rb < (int)sizeof(struct input_event))

{

perror("readerror");

exit(1);

}

//printf("read%d event\n", (int)(rb/sizeof(struct input_event)));

if(EV_KEY==ev.type)

{

if(1 == ev.value)

printf("key%d is pressed\n", ev.code);

else

printf("key %d isreleassed\n", ev.code);

}

close(fd);

return 0;

}

九、SD驱动移植

1．arch/arm/mach-s3c2440/mach-smdk2440.c中添加头文件

#include<linux/mmc/host.h>

#include<plat/mci.h>

2．arch/arm/mach-s3c2440/mach-smdk2440.c中填充如下结构

staticstruct s3c24xx_mci_pdata sd_cfg = {

.no_wprotect = true,

.gpio_detect = S3C2410_GPG(8),

.set_power = NULL,

.ocr_avail = MMC_VDD_32_33 |MMC_VDD_33_34,

};

3．添加如下函数：这个函数将上面添加结构体sd_cfg 设为SD 卡平台设备结构s3c_device_sdi的 platform_data。

static void__init smdk2440_machine_init(void)

{

s3c24xx_fb_set_platdata(&smdk2440_fb_info);

s3c_i2c0_set_platdata(NULL);

s3c24xx_mci_set_platdata(&sd_cfg);

platform_add_devices(smdk2440_devices,ARRAY_SIZE(smdk2440_devices));

smdk_machine_init();

}

4．arch/arm/mach-s3c2440/mach-smdk2440.c plat_device 结构体中加入

&s3c_device_sdi,

5．配置内核支持SD卡

DeviceDrivers --->

<*>MMC/SD/SDIO card support --->

<*> MMC block device driver

[*] Use bounce buffer for simple hosts

<*> Samsung S3C SD/MMC Card Interface support

6．重新编译内核

插入SD卡

[root@tq2440 /]# s3c-sdi s3c2440-sdi:running at 0kHz (requested: 0kHz).

s3c-sdi s3c2440-sdi: running at 400kHz(requested: 400kHz).

s3c-sdi s3c2440-sdi: running at 25000kHz(requested: 25000kHz).

mmc0: new SDHC card at address e624

mmcblk0: mmc0:e624 SU04G 3.69 GiB

mmcblk0: p1

[root@tq2440 /]# mount /dev/mmcblk0p1/mnt/ 手动挂载SD卡

[root@tq2440 /]# ls /mnt/ 列出SD内容

z.txt

[root@tq2440 /]# umount /mnt/ 卸载SD卡

7．实现自动挂载SD卡

在根文件系统根目录下创建用于挂载SD卡的目录

root@zjh:/home/rootfs#mkdir sddisk

在etc/下创建配置文件mdev.conf

root@zjh:/home/work/rootfs#vi etc/mdev.conf

内容如下

mmcblk[0-9]*p[0-9] 0:0 0660 @(mount -t vfat /dev/$MDEV /sddisk)

mmcblk[0-9]*p[0-9] 0:0 0660 $(umount /sddisk)

更多mdev.conf的设置可参考busybox的docs/mdev.txt文件

十、USB主控制器驱动移植

1．SMDK2440 开发板已经添加了USB主控制器驱动s3c2410-ohci

static struct platform_device*smdk2440_devices[] __initdata = {

&s3c_device_ohci,

&s3c_device_lcd,

&s3c_device_wdt,

&s3c_device_i2c0,

&s3c_device_iis,

&s3c_device_dm9000,

&s3c_device_rtc,

&s3c_device_sdi,

};

2．配置内核

因为优盘用到了SCSI 命令，所以首先增加 SCSI 支持：

DeviceDrivers --->

SCSI devicesupport --->

<*> SCSIdisk support

添加U盘支持

[*] USB support --->

<*> USB Mass Storage support

3．重新编译内核

插入U盘

[root@tq2440 /]#usb 1-1: new full speed USB device using s3c2410-ohci and address 3

scsi1 :usb-storage 1-1:1.0

scsi 1:0:0:0:Direct-Access Kingston DT 101 G2 PMAP PQ: 0 ANSI: 0 CCS

sd 1:0:0:0:Attached scsi generic sg0 type 0

sd 1:0:0:0: [sda]15646720 512-byte logical blocks: (8.01 GB/7.46 GiB)

sd 1:0:0:0: [sda]Write Protect is off

sd 1:0:0:0: [sda]Assuming drive cache: write through

sda: sda1

sd 1:0:0:0: [sda]Assuming drive cache: write through

sd 1:0:0:0: [sda]Attached SCSI removable disk

[root@tq2440 /]#mount /dev/sda1 /mnt/ 手动挂载U盘

[root@tq2440 /]#ls /mnt/ 列出U盘内容

?? ?????????.doc Image2Lcd.rar

?? ????.txt ?????????20110101.pdf TQ2440_Test_20100607.rar

[root@tq2440 /]#umount /mnt/ 卸载U盘

4．实现U盘自动挂载：修改rootfs/etc/mdev.conf,添加如下内容

sd[a-z]*[0-9] 0:0 0660 @(mount -t vfat/dev/$MDEV /udisk)

sd[a-z]*[0-9] 0:0 0660 $(umount /udisk)

十一、USB摄像头驱动移植

1．Linux-2.6.36内核已经支持万能USB摄像头驱动，只需配置内核即可

DeviceDrivers --->

<*>Multimedia support --->

<*> Video For Linux

[*] Enable Video For Linux API 1 (DEPRECATED)(NEW)

[*] Video capture adapters (NEW) --->

[*] V4L USB devices (NEW) --->

<*> USB Video Class (UVC)

[*] UVC input events device support (NEW)

<*> GSPCA based webcams --->

在GSPCA based webcams中选中你要的驱动或全选

2．重新编译内核，插上USB摄像头

[root@tq2440 /]#usb 1-1: new full speed USB device using s3c2410-ohci and address 3

uvcvideo: FoundUVC 1.00 device Vimicro USB Camera (Altair) (0ac8:3450)

input: VimicroUSB Camera (Altair) as /class/input/input3

[root@tq2440 /]#ll /dev/video0

crw-rw---- 1 root root 81, 0 Jan 1 00:00 /dev/video0

3．自己移植的motion移动图像监控系统效果图

十二、UDA1341声卡驱动移植

1．在arch/arm/mach-s3c2440/mach-smdk2440.c构建UDA1341平台设备

#include<sound/s3c24xx_uda134x.h>

staticstruct s3c24xx_uda134x_platform_data s3c24xx_uda134x_data = {

.l3_clk = S3C2410_GPB(4),

.l3_data = S3C2410_GPB(3),

.l3_mode = S3C2410_GPB(2),

.model = UDA134X_UDA1341,

};

staticstruct platform_device s3c24xx_uda134x = {

.name = "s3c24xx_uda134x",

.dev = {

.platform_data = &s3c24xx_uda134x_data,

}

};

在smdk2440_devices[]结构体中加入

&s3c24xx_uda134x,

2．配置内核

DeviceDrivers --->

<*> Soundcard support --->

<*> Advanced Linux Sound Architecture --->

<*> OSS Mixer API

<*> OSS PCM (digital audio) API

[*] Verbose procfs contents

<*> ALSA for SoC audio support --->

<*> SoC Audio for the Samsung S3CXXXX chips

<*> SoC I2S Audio support UDA134X wired to aS3C24XX

3．重新编译，启动开发板

[root@tq2440 /]#ll /dev/controlC0 /dev/pcmC0D0c /dev/pcmC0D0p /dev/timer

crw-rw---- 1 0 0 116, 0 Oct 21 18:14 /dev/controlC0控制设备

crw-rw---- 1 0 0 116, 24 Oct 21 18:14 /dev/pcmC0D0c录音流设备

crw-rw---- 1 0 0 116, 16 Oct 21 18:14 /dev/pcmC0D0p播放流设备

crw-rw---- 1 0 0 116, 33 Oct 21 18:14 /dev/timer定时器设备

4．测试声卡

[root@tq2440 /]#cat /dev/dsp > test.wav 录音

[root@tq2440 /]#cat test.wav > /dev/dsp 放音

5．Madplay播放器移植

1) 准备源码madplay-0.15.2b.tar.gz libmad-0.15.1b.tar.gz libid3tag-0.15.1b.tar.gz zlib-1.2.7.tar.gz

2) 新建目录madplay/install,并将以上源码拷贝到madplay目录,并解压

root@zjh:/home/work# mkdir -pmadplay/install

3) 编译zlib

root@zjh:/home/work/madplay# cd zlib-1.2.7

root@zjh:/home/work/madplay/zlib-1.2.7#./configure --prefix=/home/work/madplay/install/

root@zjh:/home/work/madplay/zlib-1.2.7# viMakefile

19 CC=arm-linux-gcc

30 LDSHARED=arm-linux-gcc

31 CPP=arm-linux-gcc -E

39 AR=arm-linux-ar

41 RANLIB=arm-linux-ranlib

root@zjh:/home/work/madplay/zlib-1.2.7#make

root@zjh:/home/work/madplay/zlib-1.2.7#make install

4) 编译libid3tag

root@zjh:/home/work/madplay/zlib-1.2.7# cd../libid3tag-0.15.1b

root@zjh:/home/work/madplay/libid3tag-0.15.1b#./configure CC=arm-linux-gcc --host=arm-linux --prefix=/home/work/madplay/installCPPFLAGS=-I/home/work/madplay/install/include LDFLAGS=-L/home/work/madplay/install/lib

root@zjh:/home/work/madplay/libid3tag-0.15.1b#make

root@zjh:/home/work/madplay/libid3tag-0.15.1b#make install

5) 编译libmad

root@zjh:/home/work/madplay/libid3tag-0.15.1b# cd../libmad-0.15.1b

root@zjh:/home/work/madplay/libmad-0.15.1b#./configure CC=arm-linux-gcc --host=arm-linux--prefix=/home/work/madplay/installCPPFLAGS=-I/home/work/madplay/install/includeLDFLAGS=-L/home/work/madplay/install/lib

root@zjh:/home/work/madplay/libmad-0.15.1b# make出现错误

cc1: error: unrecognized command line option"-fforce-mem"

错误修改，打开Makefile去掉“-fforce-mem”

129 CFLAGS = -Wall -g -O -fforce-mem-fforce-addr -fthread-jumps

root@zjh:/home/work/madplay/libmad-0.15.1b# make

root@zjh:/home/work/madplay/libmad-0.15.1b# makeinstall

6) 编译madplay

root@zjh:/home/work/madplay/libmad-0.15.1b#cd ../madplay-0.15.2b

root@zjh:/home/work/madplay/madplay-0.15.2b#./configure CC=arm-linux-gcc --host=arm-linux--prefix=/home/work/madplay/install CPPFLAGS=-I/home/work/madplay/install/includeLDFLAGS=-L/home/work/madplay/install/lib

root@zjh:/home/work/madplay/madplay-0.15.2b#make

在 madplay-0.15.2b 目录下生成可执行文件madplay，查看一下需要的动态库

root@zjh:/home/work/madplay/madplay-0.15.2b#arm-linux-readelf -d madplay |grep Shared

0x00000001 (NEEDED) Shared library: [libmad.so.0]

0x00000001 (NEEDED) Shared library:[libid3tag.so.0]

0x00000001 (NEEDED) Shared library:[libz.so.1]

0x00000001 (NEEDED) Shared library:[libm.so.6]

0x00000001 (NEEDED) Shared library:[libc.so.6]

将后两个文件从/usr/lib 拷贝到根文件系统的/usr/lib目录下（先查看，如果

已经有了则不需要）,前两个文件是在/madplay/lib/下生成的，把这两个文件也拷

贝到/usr/lib 下。

将 madplay 复制到根文件系统/usr/bin目录下，将一个 MP3 文件也放在某一目

录下，在开发板上执行 madplay 程序

[root@tq2440 /]# madplay x.mp3

Title:

Artist: DJ

Album:

十三、NAND FLASH驱动移植

1．修改arch/arm/plat-s3c24xx/common-smdk.c

static structmtd_partition smdk_default_nand_part[] = {

[0]={

.name = "u-boot",

.size = SZ_256K,

.offset = 0,

[1]={

.name = "params",

.size = SZ_128K,

.offset = MTDPART_OFS_NXTBLK,

[2]={

.name = "kernel",

.size = SZ_1M + SZ_2M,

.offset = MTDPART_OFS_NXTBLK,

[3]={

.name = "rootfs",

.size = MTDPART_SIZ_FULL,

.offset = MTDPART_OFS_NXTBLK

}

};

根据NAND FLASH芯片手册修改时序

static structs3c2410_platform_nand smdk_nand_info = {

.tacls = 10,

.twrph0 =20,

.twrph1 =10,

.nr_sets =ARRAY_SIZE(smdk_nand_sets),

.sets =smdk_nand_sets,

};

2．配置内核

root@zjh:/home/work/linux-2.6.36.4#make menuconfig

DeviceDrivers --->

<*>Memory Technology Device (MTD) support --->

[*] MTD partitioning support

<*> Direct char device access to MTD devices

-*- Common interface to block layer for MTD'translation layers'

<*> Caching block device access to MTD devices

<*> NAND Device Support --->

<*> NAND Flash support for Samsung S3C SoCs

[ ] Samsung S3C NAND Hardware ECC

3．制作cramfs文件系统（首先要确保你已经制作好一个根文件系统）

root@zjh:/home/work#mkfs.cramfs rootfs rootfs.cramfs 注：rootfs为根文件系统目录

将rootfs.cramfs拷贝到ftp服务器目录

root@zjh:/home/work#cp rootfs.cramfs /tftpboot/

将rootfs.cramfs固化到NANDFLASH第3个分区(/dev/mtdblock2)

TQ2440 # tftp32000000 rootfs.cramfs

TQ2440 # nanderase 400000 fc00000

TQ2440 # nandwrite 32000000 400000 $(filesize)

4．重新设置u-boot启动参数

TQ2440 # setbootargs root=/dev/mtdblock2 init=/linuxrc console=ttySAC0,115200

TQ2440 # save

5．下载内核uImage到内存

TQ2440 # tftp30000000 uImage

TQ2440 # bootm30000000

………………

Creating 3 MTDpartitions on "NAND 256MiB 3,3V 8-bit":

0x000000000000-0x000000100000: "u-boot"

0x000000100000-0x000000400000: "kernel"

0x000000400000-0x000010000000: "rootfs"

………………

VFS: Mountedroot (cramfs filesystem) readonly on device 31:2.

…………

[root@tq2440/]# cat /proc/mtd

dev: size erasesize name

mtd0: 0010000000020000 "u-boot"

mtd1: 0030000000020000 "kernel"

mtd2: 0fc0000000020000 "rootfs"

十四、移植yaffs文件系统

1、下载yaffs2源码

http://www.aleph1.co.uk/gitweb?p=yaffs2.git;a=summary

2、解压yaffs2源码并给内核打补丁

root@zjh:/home/work# tar -zxvf yaffs2-34292b4.tar.gz

root@zjh:/home/work# cd yaffs2-34292b4

root@zjh:/home/work/yaffs2-34292b4# ./patch-ker.sh c m../linux-2.6.36.4

3、配置内核

File systems --->

[*]Miscellaneous filesystems --->

[*] yaffs2 file system support

4、重新编译内核并烧写uImage到nand

5、设置u-boot启动参数

set bootargs root=/dev/mtdblock3 rootfstype=yaffs2init=/linuxrc console=ttySAC0,115200

set bootcmd nand read 30000000 kernel\;bootm 30000000

6、启动

yaffs: dev is 32505859 name is "mtdblock3"rw

yaffs: passed flags ""

VFS: Mounted root (yaffs2 filesystem) on device 31:3.

Freeing init memory: 120K

Please press Enter to activate this console.

Processing /etc/profile...

Done

[root@tq2440 /]#

十五、ADC驱动移植

1、在arch/arm/mach-s3c2440/mach-smdk2440.c添加头文件

#include <plat/hwmon.h>

2、在smdk2440_devices[]数组中加入

&s3c_device_adc,

&s3c_device_hwmon,

其中s3c_device_adc是在arch/arm/plat-s3c24xx/devs.c文件中实现的，s3c_device_hwmon是在arch/arm/plat-samsung/dev-hwmon.c文件中实现的

3、在smdk2440_machine_init函数中加入设置hwmon平台数据函数：

s3c_hwmon_set_platdata(&tq2440_hwmon_info);

4、构建HWMON设备平台数据结构：

/* ADC */

struct s3c_hwmon_chcfg ch2 = {

.name ="adc-ch2",

.mult = 3300,

.div = 512,

};

static struct s3c_hwmon_pdata tq2440_hwmon_info__initdata = {

.in[2] =&ch2,

};

TQ2440开发板用到了第2通道

5、修改arch/arm/plat-samsung/目录下的Kconfig文件：在S3C_DEV_HWMON选项下加入default y，这样是为了编译dev-hwmon.c这个文件

configS3C_DEV_HWMON

bool

default y

help

Compile in platform device definitions forHWMON

6、配置内核，支持hwmon驱动：

System Type --->

-*- ADCcommon driver support

Device Drivers --->

<*>Hardware Monitoring support --->

<*> S3C24XX/S3C64XX Inbuilt ADC

[*] Include raw channel attributes in sysfs

7、重新编译make uImage

drivers/hwmon/s3c-hwmon.c:54: error: field 'lock' hasincomplete type

drivers/hwmon/s3c-hwmon.c: In function's3c_hwmon_read_ch':

drivers/hwmon/s3c-hwmon.c:76: error: implicitdeclaration of function 'down_interruptible'

drivers/hwmon/s3c-hwmon.c:83: error: implicitdeclaration of function 'up'

drivers/hwmon/s3c-hwmon.c: In function's3c_hwmon_create_attr':

drivers/hwmon/s3c-hwmon.c:237: error: 'structattribute' has no member named 'owner'

drivers/hwmon/s3c-hwmon.c:255: error: 'structattribute' has no member named 'owner'

drivers/hwmon/s3c-hwmon.c: In function's3c_hwmon_probe':

drivers/hwmon/s3c-hwmon.c:299: error: implicitdeclaration of function 'init_MUTEX'

出错

打开drivers/hwmon/s3c-hwmon.c54行

struct semaphore lock;

可能是没添加头文件，添加头文件

#include <linux/semaphore.h>

重新编译

出错

drivers/hwmon/s3c-hwmon.c: In function's3c_hwmon_create_attr':

drivers/hwmon/s3c-hwmon.c:237: error: 'structattribute' has no member named 'owner'

drivers/hwmon/s3c-hwmon.c:255: error: 'structattribute' has no member named 'owner'

make[2]: *** [drivers/hwmon/s3c-hwmon.o] Error 1

make[1]: *** [drivers/hwmon] Error 2

make: *** [drivers] Error 2

屏蔽237行

//attr->dev_attr.attr.owner = THIS_MODULE;

屏蔽255行

//attr->dev_attr.attr.owner = THIS_MODULE;

重新编译成功

8、烧写到开发板重启

[root@tq2440 /]# ls /sys/class/hwmon/hwmon0/device/

adc0_raw adc4_raw bus in2_label uevent

adc1_raw adc5_raw driver modalias

adc2_raw adc6_raw hwmon:hwmon0 power

adc3_raw adc7_raw in2_input subsystem

这个目录下有8个名为adcx_raw的文件，分别对应S3C2440的8路ADC

cat /sys/class/hwmon/hwmon0/device/adc2_raw查看通道的AD转换值

查看arch\arm\plat-samsung\include\plat\hwmon.h

/**

*s3c_hwmon_chcfg - channel configuration

* @name: Thename to give this channel.

* @mult:Multiply the ADC value read by this.

* @div: Dividethe value from the ADC by this.

* The valueread from the ADC is converted to a value that

* hwmon expects (mV) by result = (value_read * @mult) / @div.

struct s3c_hwmon_chcfg {

const char *name;

unsigned int mult;

unsigned int div;

};

十六、I2C驱动移植(TQ2440的I2C总线挂接的是AT24C02)

1、在arch/arm/mach-s3c2440/mach-smdk2440.c中已经添加了I2C的支持

2、配置内核

Device Drivers --->

<*>I2C support --->

[*] Enable compatibility bits for old user-space

<*> I2C device interface

[*] Autoselect pertinent helper modules

I2CHardware Bus support --->

<*>S3C2410 I2C Driver

3、重新编译内核并烧写到开发板重启

查看设备

[root@tq2440 /]# ll /dev/i2c-0

crw-rw---- 1root root 89, 0 Jan 9 21:44 /dev/i2c-0

十七、DS18B20驱动移植(ds18b20接在S3C2440的GPG14)

1、在arch/arm/mach-s3c2440/mach-smdk2440.c文件中构—S18B20设备

添加头文件

#include <linux/w1-gpio.h>

#include <plat/gpio-cfg.h>

构—S18B20设备的平台数据结构：

/* DS18B20 */

static voidw1_enable_external_pullup(int enable)

{

if (enable)

s3c_gpio_setpull(S3C2410_GPG(14),S3C_GPIO_PULL_UP);

else

s3c_gpio_setpull(S3C2410_GPG(14),S3C_GPIO_PULL_NONE);

}

static structw1_gpio_platform_data ds18b20_w1_gpio = {

.pin = S3C2410_GPG(14),

.is_open_drain = 0,

.enable_external_pullup =w1_enable_external_pullup,

};

static structplatform_device tq2440_ds18b20_device = {

.name = "w1-gpio",

.id = -1,

.dev = {

.platform_data = &ds18b20_w1_gpio,

};

在smdk2440_devices[]中加入

&tq2440_ds18b20_device

2、配置内核支持w1-gpio和ds18b20驱动

Device Drivers --->

{*}Dallas's 1-wire support --->

1-wireBus Masters --->

<*>GPIO 1-wire busmaster

1- wire Slaves --->

<*> Thermal family implementation

3、重新编译

[root@tq2440 /]# ls sys/devices/w1\ bus\ master/

28-0000032121a3 w1_master_name

bus w1_master_pointer

driver w1_master_pullup

power w1_master_remove

subsystem w1_master_search

uevent w1_master_slave_count

w1_master_add w1_master_slaves

w1_master_attempts w1_master_timeout

w1_master_max_slave_count

这个目录下有一个以“28-”开头的目录，这个就是你的DS18B20设备的目录，28代表你使用的温度传感器是DS18B20，后面接的一串数字和字母是它的ID号（用来识别不同设备，也是独一无二的）

进入这个目录，里面的w1_slave文件就是它的设备文件：

[root@tq2440 28-0000032121a3]# ls

bus id power uevent

driver name subsystem w1_slave

获取温度值：

查看w1_slave设备文件中的内容，便可得到温度值，执行命令cat w1_slave

[root@tq2440 28-0000032121a3]# cat w1_slave

fe 00 4b 46 7f ff 02 10 8a : crc=8a YES

fe 00 4b 46 7f ff 02 10 8a t=15875

“t=”后面的数字就是温度值，要在千位的后面加上小数点，此时温度为：15.875摄氏度

linux-2.6.36.4移栽到TQ2440

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