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72 XVR16*4th Generation Intel® Core™ i7 Based Rugged VME Single Board Computer
Publication No.
500-9300007876-000
Rev. C.0
6.11 UEFI Firmware - Backup UEFI Firmware
The XVR16 provides two 8 MByte SPI flash devices for the UEFI Firmware code
and Management Engine firmware. The two devices consist of primary and a
backup code. Integrated logic switches between the primary UEFI Firmware and
the backup UEFI Firmware device. The primary UEFI Firmware can be
programmed by the user only. The backup UEFI Firmware chip is read-only and
can be updated at the factory only. This feature prevents the customer from hang-
ups at primary UEFI Firmware updates.
Switching between primary and backup UEFI is controlled by header P8. When
there is no jumper on P8, then the primary UEFI is used. When a jumper is
installed on P8, then the backup UEFI is used. See
on page 35 for
location of P8 header.
UEFI Firmware with Backup UEFI Firmware
- Easy updating, in-system
programmable Flash ROM, automatic system configuration, write protected
backup UEFI Firmware with automatic swap.
• Integrated VGA, and Ethernet PXE ROM BIOS
• USB mass storage support, password protection, headless support
• Remote console via serial port
6.12 BMC
A Baseboard Management Controller (BMC) is implemented on the XVR16,
interfacing between the host processor and the system management network.
This controller can also function as a Peripheral Management (PM) Controller.
The BMC is mapped into the local CPU’s I/O address space.
If the power of the XVR16 is off, the Intelligent Platform Management Interface
(IPMI) controller may be supplied by the +5VSTDBY power pin.
For information about the System Management in VME systems, please refer to
the VITA 38 and PICMG
®
2.9 System Management Specification. More
information about IPMI can be found at the Intel website.
LINK
www.intel.com/content/www/us/en/servers/ipmi/ipmi-home.html.
6.12.1 IPMB
The Intelligent Platform Management Bus (IPMB) is an I
2
C based bus that
provides a standardized interconnection between different VME boards within a
chassis. The standardized connection to the backplane is shown below.
Table 6-2 IPMB Backplane Pin Assignments
P1
Name
Description
B21
IPMB_SCL
Serial Clock
B22
IPMB_SDA
Serial Data
B31
+5 VSTDBY
Power Supply for all IPMI-devices