嵌入式系统移植三部曲 吴素芬

计算机与信息工程学院  09级嵌入式  吴素芬

嵌入式系统移植三部曲

一、BootLoader的移植

二、linux的移植

三、根文件系统的移植

一、准备工作

(1)、创建交叉编译环境

1、[root@localhost opt]# ll arm-linux-*

-rwxr-xr-x 1 root root 36273634 06-13 12:21 arm-linux-gcc-2.95.3.tar.bz2

-rwxr-xr-x 1 root root 42745480 06-13 12:22 arm-linux-gcc-3.4.1.tar.bz2

2、[root@localhost opt]# tar -xjvf arm-linux-gcc-2.95.3.tar.bz2 -C /usr/local/arm

tar: /usr/local/arm:无法 chdir: 没有那个文件或目录

tar: 错误不可恢复:现在退出

要先在/usr/local下创建一个arm文件夹,再执行tar -xjvf arm-linux-gcc-2.95.3.tar.bz2 -C /usr/local/arm

3、[root@localhost opt]# gedit /etc/profile 

在文件profile中添加

PATH=$PATH:/usr/local/arm/2.95.3/bin

设置编译环境是2.95.3

4、[root@localhost opt]# source /etc/profile   //使/etc/profile中添加的一行生效

[root@localhost opt]# arm-linux-gcc -v        //查看编译器

Reading specs from /usr/local/arm/2.95.3/lib/gcc-lib/arm-linux/2.95.3/specs

gcc version 2.95.3 20010315 (release)

[root@localhost opt]#

(2)、skyeye的安装

1、[root@localhost opt]# tar -xjvf skyeye-1.2.6_rc1.tar.bz2 -C ./

2、[root@localhost opt]# cd skyeye-1.2.6_rc1

3、[root@localhost skyeye-1.2.6_rc1]# ls

aclocal.m4      ChangeLog     configure     depcomp     LICENSE      misc     REPORTING-BUGS

arch            config.guess  configure.in  device      MAINTAINERS  missing  TODO

AUTHORS         config.h.in   COPYING       INSTALL     Makefile.am  NEWS     utils

autom4te.cache  config.sub    dbct          install-sh  Makefile.in  README

4、[root@localhost skyeye-1.2.6_rc1]# ./configure   //配置

5、[root@localhost skyeye-1.2.6_rc1]# make          //编译

6、[root@localhost skyeye-1.2.6_rc1]# make install   //将skyeye安装到/usr/local/bin/

7、[root@localhost skyeye-1.2.6_rc1]# mv /usr/local/bin/skyeye /usr/local/bin/skye1.2.6 

  //将/usr/local/bin/skyeye改名为:/usr/local/bin/skye1.2.6

二、BootLoader的移植

1.解压u-boot-1.1.4.tar.bz2

[root@localhost opt]# tar  -xjvf  u-boot-1.1.4.tar.bz2  -C  ./

[root@localhost opt]# cd  u-boot-1.1.4

2.编辑u-boot根目录中的Makefile文件

[root@localhost u-boot-1.1.4]# gedit Makefile

ifeq ($(ARCH),arm)

CROSS_COMPILE = arm-linux-

endif

改为

ifeq ($(ARCH),arm)

CROSS_COMPILE=/usr/local/arm/2.95.3/bin/arm-linux-

endif

 

smdk2410_config        :        unconfig

        @./mkconfig $(@:_config=) arm arm920t smdk2410 NULL s3c24x0

后面添加

sf2410_config        :        unconfig

        @./mkconfig $(@:_config=) arm arm920t sf2410 NULL s3c24x0

3.复制必要的文件,编辑sf2410.h头文件

[root@localhost u-boot-1.1.4]# mkdir board/sf2410

[root@localhost u-boot-1.1.4]# cp board/smdk2410/* board/sf2410

[root@localhost u-boot-1.1.4]# dir board/sf2410/

config.mk  flash.c  lowlevel_init.S  Makefile  smdk2410.c  u-boot.lds

[root@localhost u-boot-1.1.4]# mv board/sf2410/smdk2410.c board/sf2410/sf2410.c

[root@localhost u-boot-1.1.4]# cp include/configs/smdk2410.h include/configs/sf2410.h

[root@localhost u-boot-1.1.4]# gedit include/configs/sf2410.h 

#define        CFG_PROMPT                "SMDK2410 # "        /* Monitor Command Prompt        */

改为

#define        CFG_PROMPT                "SF2410 # "        /* Monitor Command Prompt        */

4.编辑board/sf2410/Makefile文件

[root@localhost u-boot-1.1.4]# gedit board/sf2410/Makefile 

OBJS        := smdk2410.o flash.o

改为

OBJS        := sf2410.o flash.o

5.配置u-boot

[root@localhost u-boot-1.1.4]# make sf2410_config

Configuring for sf2410 board...

(1)、修改cpu/arm920t/config.mk文件

[root@localhost u-boot-1.1.4]# gedit cpu/arm920t/config.mk

PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)

改成:

PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,$(call cc-option,-mabi=apcs-gnu,))

(2)、修改cpu/arm920t/config.mk文件

[root@localhost u-boot-1.1.4]# gedit cpu/arm920t/config.mk

将原文件的第58行开始的内容:

SREC        = hello_world.srec

BIN        = hello_world.bin hello_world

改为

SREC        = hello_world.o

BIN        = hello_world.o hello_world

6、编译u-boot

[root@localhost u-boot-1.1.4]# make

[root@localhost u-boot-1.1.4]#  ll u-boot*

-rwxr-xr-x 1 root root 395773 06-14 17:49 u-boot

-rwxr-xr-x 1 root root 100156 06-14 17:49 u-boot.bin

-rw-r--r-- 1 root root  48690 06-14 17:49 u-boot.map

-rwxr-xr-x 1 root root 300538 06-14 17:49 u-boot.srec

7、编辑skyeye.conf文件

[root@localhost u-boot-1.1.4]# gedit skyeye.conf

内容如下:

# skyeye config file for S3C2410X

cpu: arm920t

mach: s3c2410x

# physical memory

mem_bank: map=M, type=RW, addr=0x00000000, size=0x00800000, file=./u-boot.bin ,boot=yes

mem_bank: map=M, type=RW, addr=0x30000000, size=0x00800000

mem_bank: map=M, type=RW, addr=0x30800000, size=0x00800000

mem_bank: map=M, type=RW, addr=0x31000000, size=0x03000000

# all peripherals I/O mapping area

mem_bank: map=I, type=RW, addr=0x48000000, size=0x20000000

mem_bank: map=I, type=RW, addr=0x19000300, size=0x00000020

 

net: type=cs8900a, base=0x19000300, size=0x20,int=9, mac=08:00:3E:26:0A:5B, ethmod=tuntap, hostip=10.0.0.1

nandflash: type=s3c2410x,name=K9F1208U0B,dump=./nand.dump

#lcd:type=s3c2410x, mod=gtk

dbct:state=on

8、执行skyeye1.2.6

[root@localhost u-boot-1.1.4]# skyeye1.2.6

...

U-Boot code: 33F80000 -> 33F9873C  BSS: -> 33F9C814

RAM Configuration:

Bank #0: 30000000 64 MB

Flash: 512 kB

*** Warning - bad CRC, using default environment

 

In:    serial

Out:   serial

Err:   serial

SF2410 #

9、开始移植nand

[root@localhost u-boot-1.1.4]# gedit cpu/arm920t/start.S

将从NOR Flash启动改成从NAND Flash启动。

将以下U-Boot的重定向语句段:

#ifndef CONFIG_SKIP_RELOCATE_UBOOT

relocate:                                /* relocate U-Boot to RAM            */

        adr        r0, _start                /* r0 <- current position of code   */

        ldr        r1, _TEXT_BASE                /* test if we run from flash or RAM */

        cmp     r0, r1                  /* don't reloc during debug         */

        beq     stack_setup

 

        ldr        r2, _armboot_start

        ldr        r3, _bss_start

        sub        r2, r3, r2                /* r2 <- size of armboot            */

        add        r2, r0, r2                /* r2 <- source end address         */

 

copy_loop:

        ldmia        r0!, {r3-r10}                /* copy from source address [r0]    */

        stmia        r1!, {r3-r10}                /* copy to   target address [r1]    */

        cmp        r0, r2                        /* until source end addreee [r2]    */

        ble        copy_loop

#endif        /* CONFIG_SKIP_RELOCATE_UBOOT */

 

替换成:

#ifdef CONFIG_S3C2410_NAND_BOOT

@ reset NAND

        mov r1, #NAND_CTL_BASE

        ldr   r2, =0xf830           @ initial value

        str   r2, [r1, #oNFCONF]

        ldr   r2, [r1, #oNFCONF]

        bic  r2, r2, #0x800              @ enable chip

        str   r2, [r1, #oNFCONF]

        mov r2, #0xff         @ RESET command

        strb r2, [r1, #oNFCMD]

 

 

        mov r3, #0                   @ wait

nand1:

        add  r3, r3, #0x1

        cmp r3, #0xa

        blt   nand1

 

nand2:

        ldr   r2, [r1, #oNFSTAT]      @ wait ready

        tst    r2, #0x1

        beq  nand2

 

        ldr   r2, [r1, #oNFCONF]

        orr  r2, r2, #0x800              @ disable chip

        str   r2, [r1, #oNFCONF]

 

@ get read to call C functions (for nand_read())

        ldr   sp, DW_STACK_START       @ setup stack pointer

        mov fp, #0                    @ no previous frame, so fp=0

 

@ copy U-Boot to RAM

        ldr   r0, =TEXT_BASE

        mov     r1, #0x0

        mov r2, #0x20000

        bl    nand_read_ll

        tst    r0, #0x0

        beq  ok_nand_read

 

bad_nand_read:

loop2:    b     loop2          @ infinite loop

 

ok_nand_read:

@ verify

        mov r0, #0

        ldr   r1, =TEXT_BASE

        mov r2, #0x400     @ 4 bytes * 1024 = 4K-bytes

go_next:

        ldr   r3, [r0], #4

        ldr   r4, [r1], #4

        teq   r3, r4

        bne  notmatch

        subs r2, r2, #4

        beq  stack_setup

        bne  go_next

 

notmatch:

loop3:     b     loop3         @ infinite loop

 

#endif /* CONFIG_S3C2410_NAND_BOOT */

 

_start_armboot:        .word start_armboot

后面加入

        .align        2

DW_STACK_START:  .word  STACK_BASE+STACK_SIZE-4

10、修改board/sf2410/Makefile

[root@localhost u-boot-1.1.4]# gedit board/sf2410/Makefile

OBJS        := sf2410.o flash.o

改为

OBJS        := sf2410.o flash.o nand_read.o

11、创建board/sf2410/nand_read.c文件

[root@localhost u-boot-1.1.4]# gedit board/sf2410/nand_read.c

内容是:

#include

#define __REGb(x) (*(volatile unsigned char *)(x))

#define __REGi(x) (*(volatile unsigned int *)(x))

#define NF_BASE  0x4e000000

#define NFCONF  __REGi(NF_BASE + 0x0)

#define NFCMD  __REGb(NF_BASE + 0x4)

#define NFADDR  __REGb(NF_BASE + 0x8)

#define NFDATA  __REGb(NF_BASE + 0xc)

#define NFSTAT  __REGb(NF_BASE + 0x10)

#define BUSY 1

#ifndef NAND_SECTOR_SIZE

#define NAND_SECTOR_SIZE 512

#endif

#ifndef NAND_BLOCK_MASK

#define NAND_BLOCK_MASK 511

#endif

 

inline void wait_idle(void) {

        int i;

        while(!(NFSTAT & BUSY))

        for(i=0; i<10; i++);

}

 

/* low level nand read function */

int nand_read_ll(unsigned char *buf, unsigned long start_addr, int size)

{

        int i, j;

        if ((start_addr & NAND_BLOCK_MASK) || (size & NAND_BLOCK_MASK)) {

                return -1; /* invalid alignment */

        }

        /* chip Enable */

        NFCONF &= ~0x800;

        for(i=0; i<10; i++);

        for(i=start_addr; i < (start_addr + size);) {

                /* READ0 */

                NFCMD = 0;

                /* Write Address */

                NFADDR = i & 0xff;

                NFADDR = (i >> 9) & 0xff;

                NFADDR = (i >> 17) & 0xff;

                NFADDR = (i >> 25) & 0xff;

                wait_idle();

                for(j=0; j < NAND_SECTOR_SIZE; j++, i++) {

                        *buf = (NFDATA & 0xff);

                        buf++;

                }

        }

        /* chip Disable */

        NFCONF |= 0x800; /* chip disable */

        return 0;

}

12、编辑include/configs/sf2410.h文件

[root@localhost u-boot-1.1.4]# gedit include/configs/sf2410.h

在文件的后部添加

/****************** me add begin *******************/

/*

* Nandflash Boot

*/

#define CONFIG_S3C2410_NAND_BOOT 1

#define STACK_BASE    0x33f00000

#define STACK_SIZE    0x8000

//#define UBOOT_RAM_BASE    0x33f80000

/* NAND Flash Controller */

#define NAND_CTL_BASE            0x4E000000

#define bINT_CTL(Nb)        __REG(INT_CTL_BASE + (Nb))

/* Offset */

#define oNFCONF               0x00

#define oNFCMD                0x04

#define oNFADDR               0x08

#define oNFDATA               0x0c

#define oNFSTAT               0x10

#define oNFECC                0x14

/****************** me add end *******************/

13、编译u-boot,然后测试u-boot是否可以从nand启动

[root@localhost u-boot-1.1.4]# make

...

/opt/u-boot-1.1.4/cpu/arm920t/start.S

/opt/u-boot-1.1.4/cpu/arm920t/start.S: Assembler messages:

/opt/u-boot-1.1.4/cpu/arm920t/start.S:285: Error: bad instruction `align 2'

make: *** [cpu/arm920t/start.o] 错误 1

出现错误是因为在修改/opt/u-boot-1.1.4/cpu/arm920t/start.S文件时,.align        2的点丢失了!:

[root@localhost u-boot-1.1.4]# ll u-boot*

-rwxr-xr-x 1 root root 397852 06-14 18:11 u-boot

-rwxr-xr-x 1 root root 100564 06-14 18:11 u-boot.bin

-rw-r--r-- 1 root root  49189 06-14 18:11 u-boot.map

-rwxr-xr-x 1 root root 301770 06-14 18:11 u-boot.srec

 

14、执行如下命令:

此时如果直接执行skyeye1.2.6会出现错误,所以先执行下边命令:

[root@localhost u-boot-1.1.4]# mknandflashdump u-boot.bin nand.dump 0

出现如下错误

bash: mknandflashdump: command not found

把mknandflashdump和mknandflashdump.c移到/opt/u-boot-1.1.4/下,然后执行下边命令

[root@localhost u-boot-1.1.4]# cp /opt/u-boot-1.1.4/mknandflashdump /bin

//把mknandflashdump放到自动搜索路径的文件夹下,再次执行mknandflashdump u-boot.bin nand.dump 0这条命令即可

[root@localhost u-boot-1.1.4]# mknandflashdump u-boot.bin nand.dump 0

finish

[root@localhost u-boot-1.1.4]# ll nand.dump

---------- 1 root root 69206016 06-14 18:16 nand.dump

[root@localhost u-boot-1.1.4]# ll nand.dump

-rw-rw-rw- 1 root root 69206016 06-14 18:16 nand.dump

[root@localhost u-boot-1.1.4]# skyeye1.2.6                                //执行skyeye1.2.6

...

Bank #0: 30000000 64 MB

Flash: 512 kB

*** Warning - bad CRC, using default environment

 

In:    serial

Out:   serial

Err:   serial

SF2410 #

15、编辑include/configs/sf2410.h文件

 [root@localhost u-boot-1.1.4]# gedit include/configs/sf2410.h

修改内容:

#define CONFIG_BAUDRATE                115200

后面添加

/*********************** me add begin *************************************/

/* enable passing of ATAGs   */

#define CONFIG_CMDLINE_TAG      1

#define CONFIG_SETUP_MEMORY_TAGS  1

#define CONFIG_INITRD_TAG   1

/*********************** me add end *************************************/

/*CFG_CMD_NAND        |*/ \

改为

CFG_CMD_NAND        | \

/*#define CONFIG_BOOTARGS            "root=ramfs devfs=mount console=ttySA0,9600" */

改为

#define CONFIG_BOOTARGS        "noinitrd root=/dev/nfs rw nfsroot=10.0.0.1:/tmp/nfs ip=10.0.0.110:10.0.0.1:10.0.0.1:255.255.255.0 init=linuxrc console=ttySAC0,115200  mem=64M"

/*#define CONFIG_BOOTCOMMAND        "tftp; bootm" */

改为

#define CONFIG_BOOTCOMMAND        "tftp 0x31000000 uImage;bootm 0x31000000"

将第十一步在文件尾添加的内容替换成下边内容

/****************** me add begin *******************/

//  #define        CFG_ENV_IS_IN_FLASH        1        /*将该行注释,添加下面一行*/

#define CFG_ENV_IS_IN_NAND  1                /*该行很重要,没有该行,saveenv命令将失效*/

#define CFG_ENV_SIZE        0x10000                /* Total Size of Environment Sector */

#define CFG_NAND_LEGACY 1

#define CFG_ENV_OFFSET  0X20000                /*环境变量在Nand Flash的0x20000处*/

#if (CONFIG_COMMANDS & CFG_CMD_NAND)

#define CFG_NAND_BASE 0x4E000000        /* physical address to access nand at CS0*/

                                                        /* Nand Flash控制器在SFR区起始寄存器地址 */

#define CFG_MAX_NAND_DEVICE 1                /*支持Nand Flash设备的最大个数*/

#define SECTORSIZE 512

#define NAND_SECTOR_SIZE SECTORSIZE

#define NAND_BLOCK_MASK 511

#define ADDR_COLUMN 1

#define ADDR_PAGE 3

#define ADDR_COLUMN_PAGE 4

#define NAND_ChipID_UNKNOWN 0x00        /* 未知芯片的ID号 */

#define NAND_MAX_FLOORS 1

#define NAND_MAX_CHIPS 1                        /* 板子上NAND Flash芯片的最大个数 */

/*下面7行是Nand Flash命令层底层的接口函数 */

#define WRITE_NAND_COMMAND(d, adr) {rNFCMD = d;}

#define WRITE_NAND_ADDRESS(d, adr) {rNFADDR = d;}

#define WRITE_NAND(d, adr) {rNFDATA = d;}

#define READ_NAND(adr) (rNFDATA)

#define NAND_WAIT_READY(nand) {while(!(rNFSTAT&(1<<0)));}

#define NAND_DISABLE_CE(nand) {rNFCONF |= (1<<11);}

#define NAND_ENABLE_CE(nand) {rNFCONF &= ~(1<<11);}

/* the following functions are NOP's because S3C24X0 handles this in hardware */

#define NAND_CTL_CLRALE(nandptr)

#define NAND_CTL_SETALE(nandptr)

#define NAND_CTL_CLRCLE(nandptr)

#define NAND_CTL_SETCLE(nandptr)

#define CONFIG_MTD_NAND_VERIFY_WRITE 1        /* 允许Nand Flash写校验 */

/*

* Nandflash Boot

*/

#define CONFIG_S3C2410_NAND_BOOT 1

#define STACK_BASE    0x33f00000

#define STACK_SIZE    0x8000

//#define UBOOT_RAM_BASE    0x33f80000

/* NAND Flash Controller */

#define NAND_CTL_BASE            0x4E000000

#define bINT_CTL(Nb)        __REG(INT_CTL_BASE + (Nb))

/* Offset */

#define oNFCONF               0x00

#define oNFCMD                0x04

#define oNFADDR               0x08

#define oNFDATA               0x0c

#define oNFSTAT               0x10

#define oNFECC                0x14

#define rNFCONF (*(volatile unsigned int *)0x4e000000)

#define rNFCMD (*(volatile unsigned char *)0x4e000004)

#define rNFADDR (*(volatile unsigned char *)0x4e000008)

#define rNFDATA (*(volatile unsigned char *)0x4e00000c)

#define rNFSTAT (*(volatile unsigned int *)0x4e000010)

#define rNFECC (*(volatile unsigned int *)0x4e000014)

#define rNFECC0 (*(volatile unsigned char *)0x4e000014)

#define rNFECC1 (*(volatile unsigned char *)0x4e000015)

#define rNFECC2 (*(volatile unsigned char *)0x4e000016)

#endif /* CONFIG_COMMANDS & CFG_CMD_NAND*/

/****************** me add end *******************/

16、编辑board/sf2410/sf2410.c文件

[root@localhost u-boot-1.1.4]# gedit board/sf2410/sf2410.c

在文件的尾部添加如下内容:

/****************** me add begin *******************/

#if (CONFIG_COMMANDS & CFG_CMD_NAND)

typedef enum {

        NFCE_LOW,

        NFCE_HIGH

} NFCE_STATE;

 

static inline void NF_Conf(u16 conf)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        nand->NFCONF = conf;

}

 

static inline void NF_Cmd(u8 cmd)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        nand->NFCMD = cmd;

}

 

static inline void NF_CmdW(u8 cmd)

{

        NF_Cmd(cmd);

        udelay(1);

}

 

static inline void NF_Addr(u8 addr)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        nand->NFADDR = addr;

}

 

static inline void NF_SetCE(NFCE_STATE s)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        switch (s) {

                case NFCE_LOW:

                        nand->NFCONF &= ~(1<<11);

                        break;

                case NFCE_HIGH:

                        nand->NFCONF |= (1<<11);

                        break;

        }

}

 

static inline void NF_WaitRB(void)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        while (!(nand->NFSTAT & (1<<0)));

}

 

static inline void NF_Write(u8 data)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        nand->NFDATA = data;

}

 

static inline u8 NF_Read(void)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        return(nand->NFDATA);

}

 

static inline void NF_Init_ECC(void)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        nand->NFCONF |= (1<<12);

}

 

static inline u32 NF_Read_ECC(void)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        return(nand->NFECC);

}

 

#endif

/*

* NAND flash initialization.

*/

#if (CONFIG_COMMANDS & CFG_CMD_NAND)

extern ulong nand_probe(ulong physadr);

 

static inline void NF_Reset(void)

{

        int i;

        NF_SetCE(NFCE_LOW);

        NF_Cmd(0xFF); /* reset command */

        for(i = 0; i < 10; i++); /* tWB = 100ns. */

        NF_WaitRB(); /* wait 200~500us; */

        NF_SetCE(NFCE_HIGH);

}

 

static inline void NF_Init(void)

{

#if 0 /* a little bit too optimistic */

#define TACLS 0

#define TWRPH0 3

#define TWRPH1 0

#else

#define TACLS 0

#define TWRPH0 4

#define TWRPH1 2

#endif

 

        NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));

/*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */

/* 1 1 1 1, 1 xxx, r xxx, r xxx */

/* En 512B 4step ECCR nFCE=H tACLS tWRPH0 tWRPH1 */

        NF_Reset();

}

 

void nand_init(void)

{

        S3C2410_NAND * const nand = S3C2410_GetBase_NAND();

        NF_Init();

#ifdef DEBUG

        printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);

#endif

        printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);

}

#endif

/****************** me add end *******************/

17、修改 common/cmd_nand.c文件

[root@localhost u-boot-1.1.4]# gedit common/cmd_nand.c

将NanD_ReadBuf函数中的

        NanD_Command (nand, NAND_CMD_READ0);

改为

        //NanD_Command (nand, NAND_CMD_READ0);

18、编译、测试

[root@localhost u-boot-1.1.4]# make

[root@localhost u-boot-1.1.4]# ll u-boot*

-rwxr-xr-x 1 root root 440745 06-14 18:46 u-boot

-rwxr-xr-x 1 root root 115460 06-14 18:46 u-boot.bin

-rw-r--r-- 1 root root  50542 06-14 18:46 u-boot.map

-rwxr-xr-x 1 root root 346442 06-14 18:46 u-boot.srec

[root@localhost u-boot-1.1.4]# ./mknandflashdump u-boot.bin nand.dump 0

finish

[root@localhost u-boot-1.1.4]# skyeye1.2.6

...

U-Boot code: 33F80000 -> 33F9C304  BSS: -> 33FA03E0

RAM Configuration:

Bank #0: 30000000 64 MB

Flash: 512 kB

NAND:  64 MB

*** Warning - bad CRC or NAND, using default environment

 

In:    serial

Out:   serial

Err:   serial

Hit any key to stop autoboot:  0

TFTP from server 10.0.0.1; our IP address is 10.0.0.110

Filename 'uImage'.

Load address: 0x31000000

Loading: checksum bad

checksum bad

        T        T        T        T        T        .................

出现

Flash: 512 kB

NAND:  64 MB

表示实验成功,T代表try尝试去连接服务器,因为没有建立服务器所以不能连接成功

三、linux移植

因为linux2.6.14的交叉编译器为gcc-3.4.1,所以要先创建交叉编译环境

解压arm-linux-gcc-3.4.1.tar.bz2

[root@localhost opt]# tar -xjvf arm-linux-gcc-3.4.1.tar.bz2 -C /usr/local/arm

1、解压linux-2.6.14.7.tar.bz2

[root@localhost opt]# tar -xjvf linux-2.6.14.7.tar.bz2 -C ./

[root@localhost opt]#  cd linux-2.6.14.7

[root@localhost linux-2.6.14.7]# dir

2、编辑Makefile文件

[root@localhost linux-2.6.14.7]# gedit Makefile

ARCH                ?= $(SUBARCH)

CROSS_COMPILE        ?=

改为

ARCH                ?= arm

CROSS_COMPILE        ?= /usr/local/arm/3.4.1/bin/arm-linux-           // linux2.6.14的交叉编译器为gcc-3.4.1

3、复制cs8900

[root@localhost linux-2.6.14.7]# cp ../cs8900/cs8900.c drivers/net/arm/

cp: 无法 stat “../cs8900/cs8900.c”: 没有那个文件或目录

在/opt/下建立一个文件夹,把cs8900.c和cs8900.h移到cs8900文件夹下即可

[root@localhost linux-2.6.14.7]# cp ../cs8900/cs8900.c drivers/net/arm/

[root@localhost linux-2.6.14.7]# cp ../cs8900/cs8900.h drivers/net/arm/

[root@localhost linux-2.6.14.7]# ls drivers/net/arm

am79c961a.c  cs8900.c  ether00.c  ether1.h  ether3.h  Kconfig

am79c961a.h  cs8900.h  ether1.c   ether3.c  etherh.c  Makefile

4、修改drivers/net/arm/目录下的Kconfig文件

[root@localhost linux-2.6.14.7]# gedit drivers/net/arm/Kconfig

在最后添加如下内容:

config ARM_CS8900

        tristate "CS8900 support"

        depends on NET_ETHERNET && ARM && ARCH_SMDK2410

        help

          Support for CS8900A chipset based Ethernet cards. If you have a network

          (Ethernet) card of this type, say Y and read the Ethernet-HOWTO, available

          from as well as .To compile this driver as a module, choose M here and read.

          The module will be called cs8900.o.

5、修改drivers/net/arm/目录下的Makefile文件,

[root@localhost linux-2.6.14.7]# gedit drivers/net/arm/Makefile

在文件最后添加如下内容:

obj-$(CONFIG_ARM_CS8900)        += cs8900.o

6、编辑arch/arm/mach-s3c2410/mach-smdk2410.c文件

[root@localhost linux-2.6.14.7]# ls arch/arm/mach-s3c2410/

[[email protected]]# gedit arch/arm/mach-s3c2410/mach-smdk2410.c

添加一个头文件

#include

 

static struct map_desc smdk2410_iodesc[] __initdata = {

  /* nothing here yet */

};

改为

static struct map_desc smdk2410_iodesc[] __initdata = {

        /* nothing here yet */

        /* Map the ethernet controller CS8900A */

        { vSMDK2410_ETH_IO, pSMDK2410_ETH_IO, SZ_1M, MT_DEVICE }

};

7、在include/asm-arm/arch-s3c2410/目录下创建smdk2410.h文件

[[email protected]]#gedit include/asm-arm/arch-s3c2410/smdk2410.h

文件的内容如下:

#ifndef _INCLUDE_SMDK2410_H_

#define _INCLUDE_SMDK2410_H_

#include

#define pSMDK2410_ETH_IO 0x19000000

#define vSMDK2410_ETH_IO 0xE0000000

#define SMDK2410_ETH_IRQ IRQ_EINT9

#endif // _INCLUDE_SMDK2410_H_

8、设置Flash分区

在此要编辑3个文件:devs.c、mach-smdk2410.c、s3c2410.c。

(1)编辑devs.c文件,指明分区信息

[root@localhost linux-2.6.14.7]# gedit arch/arm/mach-s3c2410/devs.c

在文件的前面添加如下内容:

/*nand */

#include

#include

#include

/* NAND Controller */

/************************ 建立Nand Flash分区表 ************************/

/* 一个Nand Flash总共64MB, 按如下大小进行分区 */

/*

name:代表分区名字

size:代表Flash分区大小(单位:字节)

offset:代表Flash分区的起始地址(相对于0x0的偏移)

*/

static struct mtd_partition partition_info[] =

{

    { /* 1MB */

        name: "bootloader",

        size: 0x00100000,

        offset: 0x0,

    },

    { /* 3MB */

        name: "kernel",

        size: 0x00300000,

        offset: 0x00100000,

    },

    { /* 40MB */

        name: "root",

        size: 0x02800000,

        offset: 0x00400000,

    },

    { /* 20MB */

        name: "user",

        size: 0x00f00000,

        offset: 0x02d00000,

    }

};

/************************ 加入Nand Flash分区 ************************/

/*

nr_partitions:指明partition_info中定义的分区数目

partitions:分区信息表

*/

struct s3c2410_nand_set nandset =

{

    nr_partitions: 4,            /* the number of partitions */

    partitions: partition_info,     /* partition table */

};

/************************ 建立Nand Flash芯片支持 ************************/

/*

 

*/

struct s3c2410_platform_nand superlpplatform=

{

    tacls:0,

    twrph0:30,

    twrph1:0,

    sets: &nandset,

    nr_sets: 1,

};

另外,还要修改该文件中s3c_device_nand结构体变量,添加对dev成员的赋值。

struct platform_device s3c_device_nand = {

        .name                  = "s3c2410-nand",                   /* device name */

        .id                  = -1,                                        /* device id */

        .num_resources          = ARRAY_SIZE(s3c_nand_resource),

        .resource          = s3c_nand_resource,                   /* Nand Flash Controller Registers */

        .dev =                                               /* Add the Nand Flash device */

        {

                .platform_data = &superlpplatform

        }

};

(2)编辑mach-smdk2410.c文件,指定启动时初始化kernel启动时依据对分区的设置进行初始化。

[[email protected]]#gedit arch/arm/mach-s3c2410/mach-smdk2410.c

修改smdk2410_devices[],指明初始化时,包括前面设置的Flash分区信息。

static struct platform_device *smdk2410_devices[] __initdata = {

        &s3c_device_usb,

        &s3c_device_lcd,

        &s3c_device_wdt,

        &s3c_device_i2c,

        &s3c_device_iis,

        /* 添加如下语句 */

        &s3c_device_nand,

};

(3)编辑s3c2410.c文件,禁止Flash ECC校验

[root@localhost linux-2.6.14.7]# gedit drivers/mtd/nand/s3c2410.c

在s3c2410_nand_init_chip()函数中。

                chip->eccmode            = NAND_ECC_SOFT;

改为

                chip->eccmode            = NAND_ECC_NONE;

9、配置内核

(1)支持启动时挂载devfs

找到menu "Pseudo filesystems"在其后边添加如下语句:

config DEVFS_FS

        bool "/dev file system support (OBSOLETE)"

        default y

config DEVFS_MOUNT

        bool "Automatically mount at boot"

        default y

        depends on DEVFS_FS

(2)配置内核,产生.config文件

[root@localhost linux-2.6.14.7]# cp arch/arm/configs/smdk2410_defconfig .config

[root@localhost linux-2.6.14.7]# make menuconfig                //开始配置内核

Loadable module support  --->

     [*] Enable loadable module support

 

# 设置内核启动参数

Boot options >

     (root=1f04 mem=32M) Default kernel command string

改为

     noinitrd mem=64M root=/dev/mtdblock2 init=/linuxrc console=ttySAC0,115200

Floating point emulation  --->

     [*] NWFPE math emulation

     //This is necessary to run most binaries!!!

 

#接下来要做的是对内核MTD子系统的设置

Device Drivers  --->

    Memory Technology Devices (MTD)  --->

         <*> Memory Technology Device (MTD) support

         [*]   MTD partitioning support

         #支持MTD分区,这样我们在前面设置的分区才有意义

         [*]     Command line partition table parsing

         #支持从命令行设置flash分区信息,灵活

         RAM/ROM/Flash chip drivers  --->

            <*> Detect flash chips by Common Flash Interface (CFI) probe

            <*> Detect non-CFI AMD/JEDEC-compatible flash chips

            [ ] Flash chip driver advanced configuration options

            <*> Support for Intel/Sharp flash chips

            <*> Support for AMD/Fujitsu flash chips

            (0)   Retry failed commands (erase/program) (NEW)

            < > Support for ST (Advanced Architecture) flash chips      

            < > Support for RAM chips in bus mapping

            <*> Support for ROM chips in bus mapping

            < > Support for absent chips in bus mapping

            < > XIP aware MTD support

 

         NAND Flash Device Drivers  --->

            <*> NAND Device Support

            <*> NAND Flash support for S3C2410/S3C2440 SoC

 

# 内核支持从Ramdisk启动

Device Drivers  --->

         Block devices  --->

            <*> Loopback device support

            <*> Network block device support

            <*> RAM disk support

            (16)  Default number of RAM disks

            (4096) Default RAM disk size (kbytes)

            [*]   Initial RAM disk (initrd) support

 

# 设置CS8900的支持, 将前面添加的网卡驱动程序,以静态的方式添加到内核中

Device Drivers  --->

         Network device support  --->

            Ethernet (10 or 100Mbit)  --->

                [*] Ethernet (10 or 100Mbit)

                <*>  CS8900 support

 

#接下来要做的是对串口的设置

Device Drivers  --->

      Character devices  --->

         [*] Non-standard serial port support

         [*] S3C2410 RTC Driver

 

#接下来要做的是针对文件系统的设置

File systems  --->

    <*> Second extended fs support

    <*> ROM file system support                                        #支持romfs

    Pseudo filesystems  --->

            [*] /dev file system support (OBSOLETE)

            [*]   Automatically mount at boot (NEW)

            [*] /proc file system support

            [*] Virtual memory file system support (former shm fs)

    Miscellaneous filesystems  --->

        <*> Journalling Flash File System (JFFS) support                #支持JFFS

        (0)   JFFS debugging verbosity (0 = quiet, 3 = noisy) (NEW)

        [*]   JFFS stats available in /proc filesystem

        <*> Journalling Flash File System v2 (JFFS2) support        #支持JFFS2

        (0)   JFFS2 debugging verbosity (0 = quiet, 2 = noisy) (NEW)

        [*]   JFFS2 write-buffering support (NEW)

        [ ]   Advanced compression options for JFFS2 (NEW) 

        <*> Compressed ROM file system support (cramfs)         #支持cramfs

     Network File Systems  --->

        <*> NFS file system support

        [*]   Provide NFSv3 client support

        [*] Root file system on NFS

保存退出,产生.config文件。

10、编译内核,创建uImage,将uImage复制到tftp服务器的根目录(/tftpboot/)

[root@localhost linux-2.6.14.7]# make

...

/bin/sh: /usr/local/arm/3.4.1/bin/arm-linux-: 没有那个文件或目录

make[1]: *** [arch/arm/kernel/asm-offsets.s] 错误 1

make: *** [prepare0] 错误 2

出现错误

将Makefile文件中的$(CROSS_COMPILE)改成绝对路径 /usr/local/arm/3.4.1/bin/arm-linux-       

把解压后的文件夹/usr/local/arm/usr/local/arm/3.4.1/中的3.4.1文件夹移到/usr/local/arm/下

再次执行make命令。

...

  OBJCOPY arch/arm/boot/zImage

  Kernel: arch/arm/boot/zImage is ready

  Building modules, stage 2.

  MODPOST

表示成功。

[root@localhost linux-2.6.14.7]# cp arch/arm/boot/compressed/vmlinux ../u-boot-1.1.4/tools/

[root@localhost linux-2.6.14.7]# cd ../u-boot-1.1.4/tools/

[root@localhost tools]# ./mkimage -A arm -O linux -T kernel -C none -a 30008000 -e 30008000 -n linux-2.6.14.7 -d vmlinux uImage       //用mkimage将内核映像(vmlinux)进行转换

[root@localhost tools]#  cp uImage  ../

[root@localhost tools]# cp initrd.img  ../

cp: 无法 stat “initrd.img”: 没有那个文件或目录

出现错误将initrd.img移到/opt/u-boot-1.1.4/tools/文件夹下即可

[root@localhost tools]# cp uImage /tftpboot/

cp: 无法创建一般文件“/tftpboot/”: 是一个目录

出现错误在/下建立一个文件夹,名字为tftpboot

[root@localhost tools]# cp uImage /tftpboot/

[root@localhost tools]# cp initrd.img /tftpboot/

[root@localhost tools]# cp ../u-boot.bin /tftpboot/

[root@localhost tools]# cp initrd.img /tmp/nfs/

cp: 无法创建一般文件“/tmp/nfs/”: 是一个目录

出现错误在/tmp/下建立一个文件夹,名字为nfs

11、执行skyeye1.2.6,通过u-boot-1.1.4引导linux-2.6.14.7

[root@localhost u-boot-1.1.4]# skye1.2.6

要先搭建tftp服务器,才会出现如下信息

**************************** WARNING **********************************

If you want to run ELF image, you should use -e option to indicate

your elf-format image filename. Or you only want to run binary image,

you need to set the filename of the image and its entry in skyeye.conf.

***********************************************************************

 

Your elf file is little endian.

arch: arm

...        // 此处省略

U-Boot 1.1.4 (Jun 14 2011 - 09:30:43)

 

U-Boot code: 33F80000 -> 33F9C304  BSS: -> 33FA03E0

RAM Configuration:

Bank #0: 30000000 64 MB

Flash: 512 kB

NAND:  64 MB

*** Warning - bad CRC or NAND, using default environment

 

In:    serial

Out:   serial

Err:   serial

Hit any key to stop autoboot:  0

TFTP from server 10.0.0.1; our IP address is 10.0.0.110

Filename 'uImage'.

Load address: 0x31000000

Loading: checksum bad

#################################################################

         #################################################################

         #################################################################

         ######

done

...                   // 此处省略

   Verifying Checksum ... OK

OK

 

Starting kernel ...

 

Uncompressing Linux................................................................. done, booting the kernel.

...           // 此处省略

重启计算机后会出现错误,执行如下命令即可:

[root@localhost opt]# service xinetd restart

[root@localhost opt]# iptables -F

四、根文件系统的移植

1、解压busybox-1.13.4.tar.bz2

[root@localhost opt]# tar -xjvf busybox-1.13.4.tar.bz2 -C ./

[root@localhost opt]# cd busybox-1.13.4

2、编辑Makefile文件

[root@localhost busybox-1.13.4]# gedit Makefile

CROSS_COMPILE ?=

改为

CROSS_COMPILE ?=/usr/local/arm/3.4.1/bin/arm-linux-

 

ARCH ?= $(SUBARCH)

改为

ARCH ?= arm

3、进行默认配置

[root@localhost busybox-1.13.4]# make defconfig                //恢复默认配置

4、对配置信息进行修改

[root@localhost busybox-1.13.4]# make menuconfig

在弹出的TUI界面中进行如下配置:

检查Miscellaneous Utilities--->

    taskset 是否去除

同时设置如下:

Busybox Settings --->

        Build Options --->

            [*]Build BusyBox as a static binry (no shared libs)                //选用静态连接

            [*]Build with Large File Support (for accessing files > 2 GB)

            (/usr/local/arm/3.4.1/bin/arm-linux-) Cross Compiler prefix

        Installation Options --->

            [*] Don't use /usr

            (./_install) BusyBox installation prefix                              //安装路径

        Busybox Library Tuning  --->

            (6) Minimum password length

            (2) MD5: Trade Bytes for Speed

            [*] Faster /proc scanning code (+100 bytes)

            [ ] Support for /etc/networks

            [*] Command line editing

            (1024) Maximum length of input

            [*]   vi-style line editing commands

            (15)  History size

            [*]   History saving

            [*]   Tab completion

            [*]     Username completion

            [*]   Fancy shell prompts                //Setting this option allows for prompts to use things like \w and

                                                        //  \$ and escape codes.

            [ ] Give more precise messages when copy fails (cp, mv etc)

            (4) Copy buffer size, in kilobytes

            [ ] Use clock_gettime(CLOCK_MONOTONIC) syscall

            [*] Use ioctl names rather than hex values in error messages

            [*] Support infiniband HW

设置完毕后,保存、退出。

5、编译

[root@localhost busybox-1.13.4]# make

此时编译会出错,networking/interface.c:818: error: `ARPHRD_INFINIBAND' undeclared here (not in a function)

networking/interface.c:818: error: initializer element is not constant

networking/interface.c:818: error: (near initialization for `ib_hwtype.type')

make[1]: *** [networking/interface.o] 错误 1

make: *** [networking] 错误 2

需要编辑networking/interface.c文件。

将第818行的.type  = ARPHRD_INFINIBAND,改为        .type  = -1,再次执行make命令

如果成功,会出现如下信息:

--------------------------------------------------

You will probably need to make your busybox binary

setuid root to ensure all configured applets will

work properly.

--------------------------------------------------

6、修改_install/bin/busybox文件的属性。

[root@localhost busybox-1.13.4]# make install

[root@localhost busybox-1.13.4]# ll _install/bin/busybox

-rwxr-xr-x 1 root root 1705032 06-14 21:25 _install/bin/busybox

[root@localhost busybox-1.13.4]# chmod 4755 ./_install/bin/busybox 

[root@localhost busybox-1.13.4]# ll _install/bin/busybox

-rwsr-xr-x 1 root root 1705032 06-14 21:25 _install/bin/busybox

[root@localhost busybox-1.13.4]# ll _install/

[root@localhost busybox-1.13.4]#

[root@localhost busybox-1.13.4]#  cd _install/

[root@localhost _install]#  pwd

/opt/busybox-1.13.4/_install

7、对配置信息进行修改

[root@localhost _install]# cd /tmp/nfs

(1)在/tmp/nfs中创建所需的目录

[root@localhost nfs]# mkdir -p bin sbin lib/modules etc/init.d dev usr/bin usr/sbin usr/lib proc sys  home root boot mnt/etc mnt/jffs2 mnt/yaffs mnt/data mnt/temp var/lib var/lock var/log var/run var/tmp tmp

[root@localhost nfs]# chmod 1777 tmp

[root@localhost nfs]# chmod 1777 var/tmp

[root@localhost nfs]# cd dev/

[root@localhost dev]# pwd

/tmp/nfs/dev

[root@localhost dev]#  mknod -m 600 console c 5 1

[root@localhost dev]# mknod -m 666 null c 1 3

(2)复制文件到/tmp/nfs中

将/root/opt/busybox-1.13.4/_install中的内容复制到/tmp/nfs中。

[root@localhost dev]# cd /opt/busybox-1.13.4/_install

[root@localhost _install]# pwd

/opt/busybox-1.13.4/_install

[root@localhost _install]# cp -a bin /tmp/nfs/

[root@localhost _install]# cp -a sbin /tmp/nfs/

[root@localhost _install]# ll linuxrc

lrwxrwxrwx 1 root root 11 06-14 21:25 linuxrc -> bin/busybox

[root@localhost _install]# cp -a linuxrc /tmp/nfs/

[root@localhost _install]#  ll /tmp/nfs/linuxrc

lrwxrwxrwx 1 root root 11 06-14 21:35 /tmp/nfs/linuxrc -> bin/busybox

[root@localhost _install]# cd ..

[root@localhost busybox-1.13.4]# pwd

/opt/busybox-1.13.4

[root@localhost busybox-1.13.4]#  cp -a examples/bootfloppy/etc/* /tmp/nfs/etc/

[root@localhost busybox-1.13.4]# ls /tmp/nfs/etc/

fstab  init.d  inittab  profile

8、创建配置文件

(1)编写etc/inittab文件、修改其权限

[root@localhost busybox-1.13.4]# cd /tmp/nfs/

[root@localhost nfs]# gedit etc/inittab

文件内容如下:

::sysinit:/etc/init.d/rcS           #指定系统初始化脚本文件

::respawn:-/bin/login            #加上-语句会在登陆终端之后调用/etc/目录下的profile文件

::restart:/sbin/init                        #指定系统重启时执行的初始化程序

 

tty0::respawn:-/bin/login

 

::shutdown:/bin/umount -a -r        #指定关机时执行的操

::shutdown:/sbin/swapoff -a

[root@localhost nfs]# ll etc/inittab

-rw-r--r-- 1 root root 174 06-14 21:44 etc/inittab

[root@localhost nfs]# chmod 755 etc/inittab

(2)编写etc/init.d/rcS文件、修改其权限

[root@localhost nfs]# gedit etc/init.d/rcS

文件内容如下:

#!/bin/sh

# mount all filesystem defined in "fstab"

echo "#mount all......."

/bin/mount -a

 

/bin/mknod -m 600 /dev/console c 5 1

/bin/mknod -m 666 /dev/null c 1 3

/bin/mknod -m 666 /dev/tty0 c 4 0

/bin/mknod -m 666 /dev/mtdblock0 b 31 0

/bin/mknod -m 666 /dev/mtdblock1 b 31 1

/bin/mknod -m 666 /dev/mtdblock2 b 31 2

/bin/mknod -m 666 /dev/mtdblock3 b 31 3

#/bin/mount -t ext2 /dev/mtdblock3 /mnt/temp/

 

echo "******************************************************************"

echo "                   SF 2410 Rootfs made by wsf, 2011.06

echo "******************************************************************"

//可更改,作为自己与别人的不同之处

[root@localhost nfs]# ll etc/init.d/rcS

-rwxr-xr-x 1 root root 621 06-14 21:49 etc/init.d/rcS

[root@localhost nfs]# chmod 755 etc/init.d/rcS

(3)编写etc/fstab文件、修改其权限

[root@localhost nfs]# gedit etc/fstab

文件内容如下:

proc        /proc        proc        defaults        0        0

sysfs        /sys        sysfs        defaults        0        0

none        /tmp        ramfs        defaults        0        0

mdev        /dev        ramfs        defaults        0        0

[root@localhost nfs]# ll etc/fstab

-rw-r--r-- 1 root root 117 06-14 21:51 etc/fstab

[root@localhost nfs]# chmod 755 etc/fstab

(4)编写etc/proflie文件、修改其权限

[root@localhost nfs]# gedit etc/proflie

文件内容如下:

# /etc/profile: system-wide .profile file for the Bourne shells

echo

echo -n "Processing /etc/profile... "

# no-op

# Set search library path

echo "Set search library path in /etc/profile"

export LD_LIBRARY_PATH=/lib:/usr/lib

 

# Set user path

echo "Set user path in /etc/profile"

export PATH=/bin:/sbin:/usr/bin:/usr/sbin        #设置命令搜索路径

export HISTSIZE=100

export PS1='[\u@\h \W]\$ '

alias ll='ls -l'

 

#/sbin/ifconfig eth0 192.168.1.22 netmask 255.255.255.0

/sbin/ifconfig lo 127.0.0.1

echo "Configure net done"

 

echo "All Done"

echo

(5)创建密码文件、修改其权限

下面3个文件可以从宿主机中复制,只留下root帐号。

[root@localhost nfs]# cp /etc/passwd etc/ ;cp /etc/shadow etc/ ;cp /etc/group etc/

[root@localhost nfs]# chmod 600 etc/shadow

[root@localhost nfs]# gedit etc/passwd

内容是文件的第一行,把其他行删除,将bash改成sh

[root@localhost nfs]# gedit etc/shadow

内容是文件第一行

[root@localhost nfs]# gedit etc/group

内容是文件第一行

//这样设置在登录界面的密码是本机密码,如果在登录界面不知道密码,可将etc/passwd里的root用户中的x删除,在进入后,可以重新设置密码。

(6)为mdev创建配置文件

[root@localhost nfs]# gedit etc/mdev.conf

内容是:空

[root@localhost nfs]# ll etc/

(7)删除备份文件

[root@localhost nfs]# rm etc/*~ etc/init.d/*~

9、复制常用的库文件

编写脚本文件copy_lib.sh。

[root@localhost nfs]# gedit copy_lib.sh

文件内容如下:

#!/bin/bash

#You should put this file cp.sh in /usr/local/arm/3.4.1/arm-linux/lib/

ROOTFS_LIB=/tmp/nfs/lib/

for file in libc libcrypt libdl libm libpthread libresolv libutil

do

cp $file-*.so ${ROOTFS_LIB}

cp -d $file.so.[*0-9] ${ROOTFS_LIB}

done

cp -d ld*.so* ${ROOTFS_LIB}

 

[root@localhost nfs]# ll copy_lib.sh

-rw-r--r-- 1 root root 274 06-14 21:58 copy_lib.sh

[root@localhost nfs]# chmod a+x copy_lib.sh

[root@localhost nfs]# cp copy_lib.sh /usr/local/arm/3.4.1/arm-linux/lib/

[root@localhost nfs]# cd /usr/local/arm/3.4.1/arm-linux/lib/

[root@localhost lib]# ./copy_lib.sh

[root@localhost lib]# cd -

/tmp/nfs

[root@localhost nfs]# ll lib

10、完整的启动过程(u-boot、内核、文件系统)

(1)编辑/etc/xinetd.d/tftp文件

[root@localhost opt]# gedit /etc/xinetd.d/tftp

(2)重启tftp服务器

[root@localhost opt]# service xinetd restart

停止 xinetd:                                              [确定]

启动 xinetd:                                              [确定]

(3)编辑/etc/exports文件

[root@localhost opt]# gedit /etc/exports

(4)重启NFS服务器

[root@localhost u-boot-1.1.4]# service nfs restart  

关闭 NFS mountd:                                          [确定]

关闭 NFS 守护进程:                                        [确定]

关闭 NFS quotas:                                          [确定]

关闭 NFS 服务:                                            [确定]

启动 NFS 服务:                                            [确定]

关掉 NFS 配额:                                            [确定]

启动 NFS 守护进程:                                        [确定]

启动 NFS mountd:                                          [确定]

 

[root@localhost u-boot-1.1.4]# exportfs

/tmp/nfs       

[root@localhost u-boot-1.1.4]#  exportfs -ra

(5)完整的启动过程(u-boot、内核、文件系统、用户程序),使用NFS文件系统

[root@localhost u-boot-1.1.4]# skyeye1.2.6

**************************** WARNING **********************************

If you want to run ELF image, you should use -e option to indicate

your elf-format image filename. Or you only want to run binary image,

you need to set the filename of the image and its entry in skyeye.conf.

***********************************************************************

……                  

Hit any key to stop autoboot:  0

SF2410 # run bootcmd

TFTP from server 10.0.0.1; our IP address is 10.0.0.110

Filename 'uImage'.

Load address: 0x31000000

Loading: checksum bad

checksum bad

#################################################################

         #################################################################

         #################################################################

         ################################

done

Bytes transferred = 1161416 (11b8c8 hex)

## Booting image at 31000000 ...

   Image Name:   linux-2.6.14.7

   Created:      2009-05-24  11:22:39 UTC

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    1161352 Bytes =  1.1 MB

   Load Address: 30008000

   Entry Point:  30008000

   Verifying Checksum ... OK

OK

 

Starting kernel ...

 

Uncompressing Linux.......................................................................... done, booting the kernel.

...         //省略

VFS: Mounted root (nfs filesystem).

Mounted devfs on /dev

Freeing init memory: 92K

#mount all.......

****************************************************************************************************************

                   SF 2410 Rootfs made by wsf, 2011.06

****************************************************************************************************************

wsflogin: root

login[25]:

[root@wsf /root]# less test.c                       //查看文件内容

#include

#include

 

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

{

    int i;

    printf("===== main =====\n");

    printf ("Hello world!\n");

    for(i=0;i

    {

        printf("argv[%d]=%s\n",i,argv[i]);

    }

    printf("==== exit main ====\n");

    return 0;

}

[root@wsf /root]#gcc helloword

[root@wsf /root]#./a.out

如果出现如下情况

...

Irq: clearing subpending status 00000092

PID hash table entries: 512 (order: 9, 8192 bytes)

timer tcon=00500000, tcnt a509, tcfg 00000200,00000000, usec 00001e4c

Console: colour dummy device 80x30

 解决办法:

[root@localhost /]# service nfs restart

关闭 NFS mountd:                                          [确定]

关闭 NFS 守护进程:                                        [确定]

关闭 NFS quotas:                                          [确定]

关闭 NFS 服务:                                            [确定]

启动 NFS 服务:                                            [确定]

关掉 NFS 配额:                                            [确定]

启动 NFS 守护进程:                                        [确定]

启动 NFS mountd:                                          [确定]

[root@localhost /]# iptables -F

[root@localhost /]# service xinetd restart

停止 xinetd:                                              [确定]

启动 xinetd:                                              [确定]

或者是当启动到

In:    serial

Out:   serial

Err:   serial

Hit any key to stop autoboot:  0  回车

OK2410 # 在此输入run bootcmd

 


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