ADAM2 FTP Server

             ADAM2 FTP Server

 

        The ADAM2 FTP server is part of the bootloader resident in mtd2.Opens a FTP server for 5 seconds before booting the linux kernel.

        Reboot your modem and immediately open a ftp connection to 192.168.1.1. (The IP address 192.168.1.1, is the default address obtained from the my_ipaddress environment variable. )

C:\>ftp 192.168.1.1 Connected to 192.168.1.1. 220 ADAM2 FTP Server ready. User (192.168.1.1:(none)): adam2 331 Password required for adam2. Password: 230 User adam2 successfully logged in.

        As there is a small window of time when the ADAM2 FTP server listens after a reboot, you may need to make several attempts before a successful connection is made.

        Once successfully logged in using the username and password of adam2, the following standard FTP command are available to reload new firmware and modify environment variables :

USER PASS RETR TYPE STOR P@SW PASV SYST PORT QUIT ABOR GET PUT RECV

The ADAM2 FTP server also introduces the following non-standard commands :

REBOOT Reboots Modem UNSETENV Deletes Environment Variable Entries SETENV Set Environment Variables GETENV Gets Environment Variables MEDIA Selects FLSH or SDRAM

Uploading kernel and fileSystem firmware

Before new firmware can be uploaded, the FTP client must be set to binary mode and the bootloader set to store images in FLASH. Prefix non-standard FTP commands with quote, if your client doesn't understand them.

ftp> bin 200 Type set to I ftp> quote MEDIA FLSH 200 Media set to FLSH.

Now begin to upload the images. First we upload the filesystem.

ftp> put nsp.annexA.img "fs mtd0" 200 Port command successful. 150 Opening BINARY mode data connection for file transfer. 226 Transfer complete. ftp: 1433600 bytes sent in 10.88Seconds 131.83Kbytes/sec.

then the Linux Kernel,

ftp> put ram_zimage_pad.ar7rd.nsp.squashfs.bin "kernel mtd1" 200 Port command successful. 150 Opening BINARY mode data connection for file transfer. 226 Transfer complete. ftp: 524288 bytes sent in 4.25Seconds 123.36Kbytes/sec.

and last, the configuration file.

ftp> put config.xml "cfg mtd3" 200 Port command successful. 150 Opening BINARY mode data connection for file transfer. 226 Transfer complete. ftp: 29592 bytes sent in 0.22Seconds 132.46Kbytes/sec.

Once done, issue the REBOOT command to reset the router and load your new firmware.

ftp> quote REBOOT 221-Thank you for using the FTP service on ADAM2. 221 Goodbye. Connection closed by remote host.

Environment Variables

If the 550 environment variable not set. error appears when an attempt is made to upload the firmware, it is possible the environment variables are corrupt or missing. The ADAM2 ftp server includes GETENV, SETENV, and UNSETENV commands to work with the variables. First, check for the existence of mtd0, mtd1, mtd2 & mtd3 variables. They should appear as :

ftp> quote GETENV mtd0 mtd0 0x90090000,0x901f0000 ftp> quote GETENV mtd1 mtd1 0x90010000,0x90090000 ftp> quote GETENV mtd2 mtd2 0x90000000,0x90010000 ftp> quote GETENV mtd3 mtd3 0x901f0000,0x90200000

If they are missing or different, you will need to re-initialise them using the following commands :

ftp> quote SETENV mtd0,0x90090000,0x901f0000 200 SETENV command successful ftp> quote SETENV mtd1,0x90010000,0x90090000 200 SETENV command successful ftp> quote SETENV mtd2,0x90000000,0x90010000 200 SETENV command successful ftp> quote SETENV mtd3,0x901f0000,0x90200000 200 SETENV command successful

and attempt to upload the firmware again.

If your new filesystem/kernel doesn’t work and you don’t know why, or you are unable to resuscitate your patient using the ADAM2 FTP server it may be time to pop inside and do some debugging. Without the console port, you have very little idea of what is going on between the bootloader passing control to the kernel and the web configuration utility loading. The kernel could be corrupt, environment variables incorrect, or the file system not mounting.

Console Connector

The NB5 has a four pin connector (J4) which provides a console debug port. Pin 1 of J4 is shown of the left of the above photo (black wire). Using this asynchronous serial port, you can gain access to the bootloader and watch the kernel/userland apps load. This port is a 3V3 volt CMOS asynchronous port running at 38,400bps 8N1.

Pin No

Function

1  GND  2 RXD (In)  3 TX D (Out)   4  -

ADAM2 Bootloader Commands

The ADAM2 Bootloader provides the following commands. The printenv command is an advantage over the ADAM2 FTP server allowing the dumping of all variables.

ADAM2 Revision 0.22.02 (C) Copyright 1996-2003 Texas Instruments Inc. All Rights Reserved. (C) Copyright 2003 Telogy Networks, Inc. Usage: setmfreq [-d] [-s sys_freq, in MHz] [cpu_freq, in MHz] Memory optimization Complete! Adam2_AR7RD > Press any key to abort OS load, or wait 5 seconds for OS to boot... Adam2_AR7RD > help Commands Description -------- ----------- h/help Displays the commands supported info Displays board information memop Memory Optimization setmfreq configures/dumps the system and cpu frequencies erase Erase Flash except Adam2 Kernel and Env space printenv Displays Env. Variables setenv Sets Env. variable with a value unsetenv Unsets the Env. variable fixenv Defragment for Env. space go Loads the image starting at address Adam2_AR7RD > printenv memsize 0x00800000 flashsize 0x00200000 modetty0 38400,n,8,1,hw modetty1 38400,n,8,1,hw bootserport tty0 cpufrequency 150000000 sysfrequency 125000000 bootloaderVersion 0.22.02 ProductID AR7RD HWRevision Unknown SerialNumber none my_ipaddress 192.168.0.100 prompt Adam2_AR7RD firstfreeaddress 0x9401d328 req_fullrate_freq 125000000 maca 00:e0:a0:a6:66:70 mtd0 0x90090000,0x901f0000 mtd1 0x90010000,0x90090000 mtd2 0x90000000,0x90010000 mtd3 0x901f0000,0x90200000 autoload 1 usb_rndis_mac 00:30:0A:1D:BE:80 usb_board_mac 00:30:0A:1D:BE:80 macc 00:30:0A:1D:BE:81 usb_pid 0x0005 usb_vid 0x06EA connection0 0 Adam2_AR7RD >