슬라이드 제목 없음

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11 < > Target cross compiler Target code Target Software Development Kit (SDK) T-Appl T-Appl T-VM Cross downloader Cross debugger Case 1) Serial line Case 2) LAN line LAN line T-OS Target debugger Host System Target monitor Target system Serial line

13 Cross Compiler : C Gnu source ( Binutils, Gcc, Glibc src ) Montavista Hardhat CDK SDK : Target Builder

14 GDB ESTO ICE (In-circuit Emulator)

15 Embedded Linux Standard kernel Qplus Rt-linux Packages Redhat HardHat Other RTOS VxWorks Vrtx psos

16 JTAG TFTP NFS S/W

17 # mount /mnt/cdrom # cd /mnt/cdrom/install/cllf # rpm ihv --nodeps *noarch.rpm *i386.rpm # umount /mnt/cdrom ; eject # cd /opt/hardhat/devkit/ppc/8xx/ ; ls path # vi /etc/bashrc PATH=$PATH:/opt/hardhat/devkit/ppc/8xx/bin:/opt/hardhat/host/bin # source /etc/bashrc

18 :, JTAG JTAG boundry cell

19 .. 5 (TDI, TMS, Ntrst, TDO) JTAG CELL Test Digital Chip Test Registers TAP Flash Memory Fusing

20 PI(Parallel Input) PO(Parallel Output) SI(Scan Input) SO(Scan Output)

21 PI PO PI PO (bypass) SI SO

22 JTAG JTAG jflash JTAG

23 # minicom s 1) Serial port setup -> () 2) - : [COM1 ] /dev/ttys0 [COM2 ] /dev/ttys1 - : 9600bps - : 8 data, 1 stop, no parity -H/W& S/W 3) Save setup as dfl -> () 4) Exit () -> minicom

25 tftp #vi /etc/xinetd.d/tftp # service xinetd restart

26 1. exports # vi /etc/exports 2. export #exportfs -ra 3. nfs #service nfs stop #service nfs start

28 Boot loader Linux Kernel Ramdisk & busybox Application Makefile Document Misc

29 ?,,,,

30 LinuxBIOS( Red Hat Inc. RedBoot Blob(

31 Blob start.s c_main() serial init timer init kernel, ramdisk image ram wait for 10 seconds Key pressed within 10 seconds run command command mode GetCommand() jump to kernel image address BootKernel() BootKernel() SetClock() Download() Flash()... Auto Boot Manual Boot

32 start.s : disable CPU Stack Point c_main main.c : c

35 CPU,,, IPC,,.

36 IPC,, IPC /, proc.

37 TCP/IP,.,,,

40 1) Doc (Document) * Linux kernel * 2) Include 3) Init 4) Kernel

41 5) Mm,. 6) Ipc IPC 7) Fs 8) Net

42 9) Drivers, / 10) Lib C, 11) Arch cpu

43 #make menuconfig (make xconfig, make config )

44 #make zimage Vmlinux, vmlinux.gz Kernle.boot Elf Mkimage

45 : : X.Y.ZZ X : Y :, ->, -> ZZ :,

46 1. 2. Busybox multi-call binary,. 3. NFS

49 2~3 EXT2 :, Journaling File Systems : EXT3, ReiserFS XIP(Execute-in-Place) cramfs(compressed ROM File System) JFFS/JFFS2 NFS : : 10 ( ELF(Executable and Linking Format)

50 .

51 TFTP/initrd(Ramdisk)

52 initrd

53 TFTP MTD

54 Initrd MTD

55 MTD

57 /* 0,, (KB) ramdisk.fs */ dd if=/dev/zero of=./ramdisk.fs bs=1k count= $1 /* ext2 */ mke2fs -F -m0 ramdisk.fs /* */ mount -o loop=/dev/loop0 -t ext2 ramdisk.fs $Mount_dir /* ( ) */ cd $RAMDISK/image/ find. -print cpio -vpdum $Mount_dir

59 enable,

60 NFS disable

61 1. # make dep # make zimage # cd arch/arm/boot ; tftp # cp zimage /tftpboot 2. [ Target ] dn_k zimage [ Target ] dn_r ramdisk.sample

64 1. Busybox tar.gz, # tar xvfz Busybox tar.gz # cd busybox Config.h #define BB_CP_MV //#define BB_CUT //#define BB_DATE #define BB_DD #define BB_DF

65 3. Makefile CROSS=ppc_8xx-gcc PREFIX=[Target]/Target/busybox/busybox_img 4. #make ; #make install 5. Busybox

66 Network File system NFS NFS.

67 NFS NFS

68 ( busybox ) NFS NFS.

69 TFTP NFS

70 1. Target system 2. NFS

71 #make menuconfig

72 Bootp rarp

73 NFS

74 1. # make dep # make kernel.boot tftp # cp kernel.boot /tftpboot/kernel.nfs 2. Target [Target] tftp kernel.nfs 3. NFS [Target] boot

PowerPoint 프레젠테이션

PowerPoint 프레젠테이션 (Host) set up : Linux Backend RS-232, Ethernet, parallel(jtag) Host terminal Target terminal : monitor (Minicom) JTAG Cross compiler Boot loader Pentium Redhat 9.0 Serial port Serial cross cable Ethernet