10.2.2 BIOS Recovery via Serial Port
The Serial Flash method allows for boot block recovery by loading a BIOS image via a
serial port (COM1). This is can be used by many headless embedded systems which
rely on a serial port as a debug and utility console port. This feature is disabled by
default. See setup node in the BIOS Setup Program section 9.4.11 Remote Access
Configuration Submenu.
For more information about “BIOS Recovery via Serial Port” refer to application note
AN6_BIOS_Recovery.pdf, which can be found on the congatec AG website at
www.congatec.com.
10.3 Serial Port and Console Redirection
Serial Redirection allows video and keyboard redirection via a standard RS-232 serial
port.
For more information about “Serial Port and Console Redirection” refer to application
note AN2_Remote_Control.pdf, which can be found on the congatec AG website at
www.congatec.com.
10.4 BIOS Security Features
The BIOS provides both a supervisor and user password. If you use both passwords,
the supervisor password must be set first. The system can be configured so that all
users must enter a password every time the system boots or when setup is executed.
The two passwords activate two different levels of security. If you select password
support you are prompted for a one to six character password. Type the password on
the keyboard. The password does not appear on the screen when typed.
The supervisor password (supervisor mode) gives unrestricted access to view and
change all the setup options. The user password (user mode) gives restricted access to
view and change setup options.
If only the supervisor password is set, pressing <Enter> at the password prompt of the
BIOS setup program allows the user restricted access to setup.
Setting the password check to 'Always' restricts who can boot the system. The
password prompt will be displayed before the system attempts to load the operating
system. If only the supervisor password is set, pressing <Enter> at the password prompt
allows the user to boot the system.
Copyright © 2006 congatec AG
X945m13
100/102