System BIOS

Intel® Server Board SE7520JR2

4.10 PXE BIOS Support

The BIOS will support PXE-compliant implementations that:

•Locate and configure all PXE-capable boot devices (UNDI Option ROMs) in the system, both built-in and add-ins.

•Supply a PXE according to the specification if the system includes a built-in network device.

•Meet the following specifications: System Management BIOS (SMBIOS) Reference Specification v2.2 or later. The requirements defined in Sections 3 and 4 of the BIOS Boot Specification (BBS) v1.01or later, to support network adapters as boot devices. Also, supply a valid UUID and Wake-up Source value for the system via the SMBIOS structure table.

4.11 Console Redirection

The BIOS supports redirection of both video and keyboard via a serial link (Serial A or Serial B). When console redirection is enabled, the local (host server) keyboard input and video output are passed both to the local keyboard and video connections, as well as to the remote console via the serial link. Keyboard inputs from both sources are valid and video is displayed to both outputs. As an option, the system can be operated without a keyboard or monitor attached to the host system and can run entirely from the remote console. Setup and any other text-based utilities can be accessed through console redirection.

The BIOS will take the Setup values for Serial console redirection and map them to the ACPI SPCR tables. The BIOS setup tokens for serial console will also read the BMC serial console values to sync up.

Text-based console redirection is also supported over the Serial Over LAN (SOL) protocol. SOL is built on top of the IPMI-over-LAN infrastructure specified in the IPMI 2.0 specification. When the SOL feature is activated by establishing a LAN connection to the BMC and activating the SOL to be enabled, the EMP-based connectivity is disabled.

The IMM uses UDP datagrams to send SOL character data as “SOL Messages”. The “SOL Messages” packet format follows that used for IPMI-over-LAN with extensions to support SOL Messages as a new message type. SOL requires the support of the VT/UTF-8 character set specified in the Microsoft* Windows.Net* headless requirements from Microsoft. The application displaying SOL data must be VT/UTF-8 aware. The console sends keystrokes in a UDP packet to the server.

If the session ID of SOL matches the session ID in boot block info, then the BIOS starts serial- based redirection services. If the session IDs do not match, the BIOS follows the path specified in the IPMI section and launches LAN or serial console redirection services.

BIOS Console redirection terminates before giving control to an operating system. The operating system is responsible for continuing the Console Redirection after that point. BIOS console redirection is a text-based console and any graphical data, such as a logo, is not redirected.

112

Revision 1.0

 

C78844-002