高手进阶 学会做嵌入式Linux操作系统

General setup --->;

[*] Networking support

[*] PCI support

(Any) PCI access mode

[*] PCI device name database

[*] System V IPC

[*] Sysctl support

(ELF) Kernel core (/proc/kcore) format

[*] Kernel support for ELF binaries

[*] Power Management support

Memory Technology Devices (MTD) --->; MTD设备，我用CF卡，不选

Parallel port support --->; 不选

Plug and Play configuration --->; 我的系统用不着即插即用，不选

Block devices --->;

[*] Loopback device support

[*] RAM disk support

(4096) Default RAM disk size (NEW)

[*] Initial RAM disk (initrd) support

Multi-device support (RAID and LVM) --->; 不选

Networking options --->; 基本上都选了

ATA/IDE/MFM/RLL support --->; 用了默认的

Telephony Support --->; 不选

SCSI support --->; 不选

Fusion MPT device support --->; 不选

I2O device support --->; 不选

Network device support --->; 根据实际情况选择

Amateur Radio support --->; 不选

IrDA (infrared) support --->; 不选

ISDN subsystem --->; 不选

Old CD-ROM drivers (not SCSI, not IDE) --->; 不选

Input core support --->; 不选

Character devices --->;

[*] Virtual terminal

[*] Support for console on virtual terminal

[*] Standard/generic (8250/16550 and compatible UARTs) serial support

[*] Support for console on serial port

Multimedia devices --->; 不选

File systems --->;

[*] Kernel automounter version 4 support (also supports v3)

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

[*] /proc file system support

[*] Second extended fs support

Console drivers --->;

[*] VGA text console 调试时接显示器用

剩下三个都不要

Sound --->;

USB support --->;

Kernel hacking --->;

第四章 建立根文件系统

1、建立目录

构建工作空间时，rootfs文件夹用来存放根文件系统，

#cd rootfs

根据根文件系统的基本结构，建立各个对应的目录：

# mkdir bin dev etc lib proc sbin tmp usr var root home

# chmod 1777 tmp

# mkdir usr/bin usr/lib usr/sbin

# ls

dev etc lib proc sbin tmp usr var

# mkdir var/lib var/lock var/log var/run var/tmp

# chmod 1777 var/tmp

对于单用户系统来说，root和home并不是必须的。

准备好根文件系统的骨架后，把前面建立的文件安装到对应的目录中去。

2、拷贝链接库

把uclibc的库文件拷贝到刚才建立的lib文件夹中：

# cd ${PREFIX}/lib

[root@skynet lib]# cp *-*.so ${PRJROOT}/rootfs/lib

[root@skynet lib]# cp -d *.so.[*0-9] ${PRJROOT}/rootfs/lib

3、 拷贝内核映像和内核模块

因为没有模块，所以拷贝模块就省了，

新建boot目录，把刚才建立好的内核拷贝过来

# cd /home/kendo/control-project/daq-module/rootfs/

# mkdir boot

# cd ${PRJROOT}/images

# cp bzImages-2.4.18-rmk5 /home/kendo/control-project/daq-module/rootfs/boot