Telem-GW6Lin filesystem

File system overview

Root of the file system consists of the following files and folders

This file system is in flash memory of the DIMM module

roland@spirit:~/Projects/Telem-GW6Lin/gw6fs/rootfs$ ls -l --classify --human-readable
total 44K
drwxr-xr-x 2 root root 4.0K 2009-08-13 12:53 bin/
drwxr-xr-x 2 root root 4.0K 2009-08-14 18:02 dev/
drwxr-xr-x 7 root root 4.0K 2009-08-14 18:13 etc/
lrwxrwxrwx 1 root root   11 2009-08-10 16:22 init -> bin/busybox*
drwxr-xr-x 2 root root 4.0K 2009-08-11 20:30 lib/
drwxr-xr-x 3 root root 4.0K 2009-08-11 15:13 mnt/
drwxr-xr-x 2 root root 4.0K 2009-03-05 15:13 proc/
drwxr-xr-x 2 root root 4.0K 2009-08-12 18:37 root/
drwxr-xr-x 2 root root 4.0K 2009-08-13 13:23 sbin/
drwxr-xr-x 2 root root 4.0K 2009-03-05 15:10 sys/
lrwxrwxrwx 1 root root    7 2009-08-10 16:22 tmp -> var/tmp
drwxr-xr-x 5 root root 4.0K 2009-08-10 18:14 usr/
drwxr-xr-x 2 root root 4.0K 2009-08-12 13:39 var/

Available applications

Busybox: The Swiss Army Knife of Embedded Linux

BusyBox combines tiny versions of many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. The utilities in BusyBox generally have fewer options than their full-featured GNU cousins; however, the options that are included provide the expected functionality and behave very much like their GNU counterparts. BusyBox provides a fairly complete environment for any small or embedded system.

BusyBox has been written with size-optimization and limited resources in mind. It is also extremely modular so you can easily include or exclude commands (or features) at compile time. This makes it easy to customize your embedded systems. To create a working system, just add some device nodes in /dev, a few configuration files in /etc, and a Linux kernel.

root@Gateway6: busybox 
BusyBox v1.14.1 (2009-08-10 18:33:54 EEST) multi-call binary
Copyright (C) 1998-2008 Erik Andersen, Rob Landley, Denys Vlasenko
and others. Licensed under GPLv2.
See source distribution for full notice.

Usage: busybox [function] [arguments]...
   or: function [arguments]...

	BusyBox is a multi-call binary that combines many common Unix
	utilities into a single executable.  Most people will create a
	link to busybox for each function they wish to use and BusyBox
	will act like whatever it was invoked as!

Currently defined functions:
	[, [[, acpid, addgroup, adduser, adjtimex, ar, arp, arping, ash, awk, basename, blkid, brctl, bunzip2, bzcat, bzip2, cal, cat, catv, chat,
	chattr, chgrp, chmod, chown, chpasswd, chpst, chroot, chrt, chvt, cksum, clear, cmp, comm, cp, cpio, crond, crontab, cryptpw, cttyhack, cut,
	date, dc, dd, deallocvt, delgroup, deluser, depmod, devmem, df, dhcprelay, diff, dirname, dmesg, dnsd, dos2unix, du, dumpkmap, dumpleases,
	echo, ed, egrep, eject, env, envdir, envuidgid, ether-wake, expand, expr, fakeidentd, false, fbset, fbsplash, fdflush, fdformat, fdisk, fgrep,
	find, findfs, fold, free, freeramdisk, fsck, fsck.minix, ftpd, ftpget, ftpput, fuser, getopt, getty, grep, gunzip, gzip, halt, hd, hdparm,
	head, hexdump, hostid, hostname, httpd, hush, hwclock, id, ifconfig, ifdown, ifenslave, ifup, inetd, init, insmod, install, ionice, ip, ipaddr,
	ipcalc, ipcrm, ipcs, iplink, iproute, iprule, iptunnel, kbd_mode, kill, killall, killall5, klogd, last, length, less, linux32, linux64, linuxrc,
	ln, loadfont, loadkmap, logger, login, logname, logread, losetup, lpd, lpq, lpr, ls, lsattr, lsmod, lzmacat, makedevs, makemime, man, md5sum,
	mdev, mesg, microcom, mkdir, mkdosfs, mkfifo, mkfs.minix, mkfs.vfat, mknod, mkpasswd, mkswap, mktemp, modprobe, more, mount, mountpoint,
	msh, mt, mv, nameif, nc, netstat, nice, nmeter, nohup, nslookup, od, openvt, passwd, patch, pgrep, pidof, ping, ping6, pipe_progress, pivot_root,
	pkill, popmaildir, poweroff, printenv, printf, ps, pscan, pwd, raidautorun, rdate, rdev, readahead, readlink, readprofile, realpath, reboot,
	reformime, renice, reset, resize, rm, rmdir, rmmod, route, rtcwake, run-parts, runlevel, runsv, runsvdir, rx, script, sed, sendmail, seq,
	setarch, setconsole, setfont, setkeycodes, setlogcons, setsid, setuidgid, sh, sha1sum, sha256sum, sha512sum, showkey, slattach, sleep, softlimit,
	sort, split, start-stop-daemon, stat, strings, stty, su, sulogin, sum, sv, svlogd, swapoff, swapon, switch_root, sync, sysctl, syslogd, tac,
	tail, tar, tcpsvd, tee, telnet, telnetd, test, tftp, tftpd, time, timeout, top, touch, tr, traceroute, true, tty, ttysize, tunctl, udhcpc,
	udhcpd, udpsvd, umount, uname, uncompress, unexpand, uniq, unix2dos, unlzma, unzip, uptime, usleep, uudecode, uuencode, vconfig, vi, vlock,
	watch, watchdog, wc, wget, which, who, whoami, xargs, yes, zcat, zcip

Dropbear SSH server and client

Dropbear is a relatively small SSH 2 server and client. It runs on a variety of POSIX-based platforms. Dropbear is open source software, distributed under a MIT-style license. Dropbear is particularly useful for "embedded"-type Linux (or other Unix) systems, such as wireless routers.

I2C Tools for Linux

This package contains a heterogeneous set of I2C tools for Linux: a bus probing tool, a chip dumper, register-level access helpers, EEPROM decoding scripts, and more.

• i2cdetect
• i2cset
  • a small helper program to set registers visible through the I2C bus.
• i2cget
  • a small helper program to read registers visible through the I2C bus (or SMBus)
• i2cdump

Preparations

Connecting to gateway through serial console

1. Connect Gateway to your computer
2. Open up a terminal: gnome-terminal / ssherminator / xterm / any other
3. Start minicom
   • Settings: 38400 8N1 flow control: none
4. Connect external power to gateway
5. Press any key when asked
   • You will only have a second

You will see(With DIMM module 27M-DMM-144):

NAND X-Loader 1.22


U-Boot 1.1.2-vpac4 (Feb 26 2009 - 18:20:24)

U-Boot code: 5C010000 -> 5C01D9C8  BSS: -> 5C0214D8
RAM Configuration:
Bank #0: a0000000 64 MB
Bank #1: 80000000  0 kB
OneNAND: Scanning device for bad blocks
Flash: 64 MB
dm9000 i/o: 0x8000300 (32bit), id: 0x90000a46 
MAC: 00:0d:15:00:72:31
Hit any key to stop autoboot:  0 
u-boot>

Voila, you're in console

Setting up U-Boot

To see current environment variables type

• printenv

It returns something like this:

u-boot> printenv
bootdelay=3
baudrate=38400
bootcmd=one read a1000000 40000 160000;wtags;go
ethaddr=00:0d:15:00:72:31
filesize=11f11c
fileaddr=A1000000
netmask=255.255.255.0
serverip=10.0.0.16
ipaddr=192.168.1.200
bootargs=console=ttyS0,38400 tftproot=10.0.0.16:rootfs.tar.gz
gatewayip=10.0.0.42

Environment size: 279/2044 bytes
u-boot> 

Now:

• set gatewayip 10.0.0.42
• set ipaddr 10.0.0.23
  • this needs to be unused, ping it if unsure
    • ping 10.0.0.23
• save

Flashing filesystem

• Paste to u-boot

u-boot> erase 1:12-;set bootargs console=ttyS0,38400 tftproot=10.0.0.16:rootfs.tar.gz;tftp zImage-144u.bin;wtags;go

• Restart device when asked

When it doesn't work

Warning: gatewayip needed but not set

While in U-Boot type:

• set gatewayip 10.0.0.42
• save