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S3C4510B上運行uClinux-2.6的過程

  假設工作目錄為/root    step 1 將下面4個文件下載到/root目錄中  http://www.UCLinux.org/pub/uClinux/dist/uClinux-dist-20041215.tar.gz  http://opensrc.sec.samsung.com/download/arm-uclinux-tools-base-gcc3.4.0-20040713.sh  http://opensrc.sec.samsung.com/download/linux-2.6.9-hsc0.patch.gz  http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.9.tar.bz2    step 2 安裝arm-uclinux編譯器  執行 sh arm-uclinux-tools-base-gcc3.4.0-20040713.sh  修改 /root/.bash_profile,修改環境變量PATH  PATH=$PATH:$HOME/bin:$HOME/arm-uclinux-tool/bin  可以測試一下arm-uclinux-gcc -v,應該可以其版本信息    step 3 釋放內核源代碼  依次執行如下命令  tar -zxvf uClinux-dist-20041215.tar.gz  cd uClinux-dist  tar -jxvf ../linux-2.6.9.tar.bz2  gzip -dc ../linux-2.6.9-hsc0.patch.gz patch -p0  rm -rf linux-2.6.x  mv linux-2.6.9 linux-2.6.x  cp linux-2.6.x/arch/armnommu/configs/espd_4510b_defconfig vendor/Samsung/4510B/config.linux-2.6.x (kernel配置)  cp vendor/Samsung/4510B/config.vendor-2.4.x vendor/Samsung/4510B/config.vendor-2.6.x (vendor配置,保持與2.4一致即可)    step 4 修改內核  修改vendor/Samsung/4510B/Makefile,添加如下內容  63 image:  64 [ -d $(IMAGEDIR) ] mkdir -p $(IMAGEDIR)  65 genromfs -v -V "ROMdisk" -f $(ROMFSIMG) -d $(ROMFSDIR)  66 arm-uclinux-ld -r -o $(ROOTDIR)/$(LINUXDIR)/romfs.o -b binary $(ROMFSIMG)  67 $(CROSS_COMPILE)objcopy -O binary --remove-section=.romvec 68 --remove-section=.text --remove-section=.ramvec 69 --remove-section=.init 70 --remove-section=.bss --remove-section=.eram 71 $(ROOTDIR)/$(LINUXDIR)/linux $(IMAGEDIR)/linux.data    修改vendor/Samsung/4510B/rc,將最後一行的dhcpcd屏蔽掉  11 cat /etc/motd  12 ifconfig lo 127.0.0.1  13 route add -net 127.0.0.0 netmask 255.255.255.0 lo  14 #dhcpcd &    修改vendor/config/armnommu/config.arch, 將arm-elf改為arm-uclinux  40 MACHINE = arm  41 ARCH = armnommu  42 CROSS_COMPILE = arm-uclinux-  43 CROSS = $(CROSS_COMPILE)    修改linux-2.6.x/arch/armnommu/arch/kernel/vmlinux-lds, 添加romfs.o  78 *(.got) /* Global offset table */  79  80 romfs_start = .;  81 romfs.o  82 romfs_end = .;    修改linux-2.6.x/arch/armnommu/kernel/setup.c,添加變量romfs_start,romfs_end及設置default_command_line  64 extern int _stext, _text, _etext, _edata, _end;  65 extern int romfs_start,romfs_end;    682 char *from = default_command_line;  683 sprintf(default_command_line, "root=/dev/ram0 initrd=0x%08lx,%ldk keepinitrd", (unsigned  long)&romfs_start,((unsigned long)&romfs_end - (unsigned long)&romfs_start)>>10);    step 5 配置內核    執行make menconfig,以下全選上,然後保存退出,其余具體各項配置暫不更改  (linux-2.6.x) Kernel Version  (uClibc) Libc Version    Default all settings (lose changes) (NEW)  Customize Kernel Settings (NEW)  Customize Vendor/User Settings (NEW)  Update Default Vendor Settings (NEW)  第一次配置退出可能還會要求選擇板類型,直接按數字選espd_4510b即可    step 6 編譯  執行 make  執行完後images目錄中會有image.ram文件,利用bootloader將其加載到0x8000地址處執行,接上串口就能看到如下信息了    Linux version 2.6.9-hsc0 ([email protected]) (gcc version 3.4  .3) #24 Thu Jun 30 00:04:47 EDT 2005  CPU: Samsung-S3C4510B [36807001] revision 1 (ARMv4T)  Machine: ESPD 4510B(S3C4510B)  Warning: bad configuration page, trying to continue  Built 1 zonelists  Kernel command line: root=/dev/ram0 initrd=0x0011d000,884k keepinitrd  PID hash table entries: 128 (order: 7, 2048 bytes)  Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)  Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)  Memory: 16MB = 16MB total  Memory: 14080KB available (1936K code, 122K data, 56K init)  Mount-cache hash table entries: 512 (order: 0, 4096 bytes)  checking if image is initramfs...it isn't (ungzip failed); looks like an initrd  NET: Registered protocol family 16  ttyS0 at I/O 0x3ffd000 (irq = 4) is a Samsung S3C4510B Internal UART  ttyS1 at I/O 0x3ffe000 (irq = 6) is a Samsung S3C4510B Internal UART  RAMDISK driver initialized: 16 RAM disks of 1024K size 1024 blocksize  loop: loaded (max 8 devices)  Samsung S3C4510B Ethernet Driver version 0.2 (2004-06-13)   NET: Registered protocol family 2  IP: routing cache hash table of 512 buckets, 4Kbytes  TCP: Hash tables configured (established 1024 bind 2048)  NET: Registered protocol family 1  NET: Registered protocol family 17  RAMDISK: romfs filesystem found at block 0  RAMDISK: Loading 881KiB [1 disk] into ram disk... done.  VFS: Mounted root (romfs filesystem) readonly.  Freeing init memory: 56K  Shell invoked to run file: /etc/rc  Command: hostname Samsung  Command: /bin/eXPand /etc/ramfs.img /dev/ram1  Command: mount -t proc proc /proc  Command: mount -t ext2 /dev/ram1 /var  Command: mkdir /var/config  Command: mkdir /var/tmp  Command: mkdir /var/log  Command: mkdir /var/run  Command: mkdir /var/lock  Command: mkdir /var/empty  Command: cat /etc/motd  Welcome to  ____ _ _  / __ _  _ _ _ ____ _ _ _ _   _ \ \ \/ /   _ __ _ / ___\_______ _\____\_/\_/     _    For further information check:  http://www.uclinux.org/    Command: ifconfig lo 127.0.0.1  Command: route add -net 127.0.0.0 netmask 255.255.255.0 lo  Execution Finished, Exiting    Sash command shell (version 1.1.1)  />




 



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