1. RDC R32xx/HB30x Web UI & System Configuration Design March. 23, 2006 draft version 0.99 RDC Semiconductor Co., Ltd. All Rights Reserved.

2. 2 Architecture – Linux Boot Up Linux Kernel Boot Up & Initialization Get & Check configuration in Flash Read configuration data, then initial & enable application Configuration data stored in the Flash Get default configuration in Filesystem Default configuration data stored in the RAMDisk Yes, Found No, not found

3. 3 System Configuration & Flash Format Address define in the //linux2425/drivers/mtd/maps/physmap.c Linux Kernel Configuration Database Ram Disk (File System) Redboot 0x1F0000 0x200000 0x3E0000 0x3FFFFF 0x000000

4. 4 Get/Store Configuration in the Flash Get the configuration 1.Read data from the flash (MTD block 2) cat /dev/mtdblock/2 > /tmp/config.tar.gz 2.Decompress the data & check the format tar -zxvf /tmp/config.tar.gz if [ -r /tmp/configuration/sysinfo.conf] …. Store the configuration 1.Compress the configuration data into a file tar -cvzf /tmp/config.tar.gz /tmp/configuration 2.Store the file to the flash (MTD block 2) cat /tmp/config.tar.gz > /dev/mtdblock/2

5. 5 System Configuration - File Lists sysinfo.conf lan.conf wan.conf wireless.conf manage.conf Put in the /tmp/configuration directory Demo & show configuration file. /tmp/configuration : run time configuration data base. /http/config.tar.gz : default configuration file

6. 6 System Configuration - Data Structure # start eth1  Tag to define start DHCP_SERVER=ON  Variable, Value IPADDR=1.1.1.246 SUBNETMASK=255.255.254.0 # end eth1  Tag to define end Example : lan.conf

7. 7 Linux Boot Up – Start Service inittab (/etc) rcS (/etc/init.d) S50StartService (/etc/init.d) getmac.sh (/etc/app) getlan.sh … nat.sh … RDC ’ s application entry point 1.Get & check configuration file 2. Invoke individual process Process Functions 1.Read the variable, value pair 2.Apply and enable the configuration ( Demo and explain the program: S50StartService & getmac.sh )

8. 8 Web UI – Http daemon start up Http daemon start up Linux boot up initialization Startup http daemon S50StartService(/etc/init.d) will start up the thttp daemon (/http) ### Start Http Daemon #### chmod 755 /http/webroot  r+x attribute chmod 644 /http/webroot/*.htm  r attribute, no x chmod 755 /http/webroot/*.cgi  r+x attribute /http/thttpd -C /http/thttpd.conf

9. 9 Web UI – thttp.conf user=root cgipat=**. cgi logfile=/tmp/thttpd.log  Must be assigned pidfile=/tmp/thttpd.pid port=80 Globalpasswd dir=/http/webroot  Html path nochroot Put in the /http directory

10. 10 Web UI – Show html Http daemon receive html request RDC ’ s CGI function Get the run time configuration data Run time Configuration Database (/tmp/configuration) Patch & output ( Demo lan_eth1.cgi & lan_eth1.htm )

11. 11 Web UI – Post and Save configuration Http Daemon receive POST request RDC ’ s CGI function Call proccgi - Get the value to enviroment parameter Get the value and save to run time configuration space Run time Configuration Database (/tmp/configuration) ( Demo lan_eth1.cgi & lan_eth1.htm )

12. 12 Files List - Review S50StartService (/etc/init.d/)  RDC main entry point in Linux system boot up /etc/app  Get & apply configuration function directory /etc/http 1.config.tar.gz  Default configuration file 2.thttpd, thttpd.conf  Http daemon 3./etc/http/configuration  Original default configuration file lists (No compressed, no used in the run time code,can be removed to save memory) 4./etc/http/webroot  HTML & CGI root files /tmp 1.thttpd.log, thttpd.pid  Http daemon log files 2.config.tar.gz  From the flash or default configuration file 3./tmp/configuration  Run time configuration data base brctl,iptables,iwpriv  Put in the /etc/app directory proccgi  Put in the /sbin directory

13. 13 Web Firmware Upgrade A tar-ball file include upgrade.lst and all image file( bzImage, redboot.bin, root_fs_i386.ext2.gz). upgrade.lst control what image will be upgrade upgrade.lst contents # start upgrade_files KERNEL_IMAGE=bzImage ROOT_IMAGE=root_fs_i386.ext2.gz REDBOOT_IMAGE=redboot.bin # end upgrade_files

14. 14 Next version Improvement 1.Support Javascript on html, let user configure it more friendly Add on functions 1.DHCP Client in the Wan site 2.DHCP Server in the Lan site 3.Wireless WEP security support 4.FTP/Samba IDE/USB storage access

15. 15 Q & A

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