Functional Architecture
Intel
®
Server Board S5500BC TPS
Intel order number: E42249-003
Revision 1.0
30
Fan monitoring and fan control
ICH10 temperature monitoring
PECI 2.0 Proxy:
SPS offers a means for a BMC without a PECI 2.0 interface to use the ME as a PECI
proxy. The BMC on Intel servers already has a PECI 2.0 interface, so this SPS capability
is not used.
No external IOH memory is required to support the ME SPS functions.
3.3.4.1
ME Firmware Update
The ME FW provides a set of IPMI OEM commands for performing the firmware update. An
update utility running on the host uses IPMI bridging functionality to send these commands to
the ME through the BMC over the BMC/IPMB link.
On Intel server platforms, the ME FW uses a single operational image with a recovery image. In
order to upgrade an operational image, a boot to recovery image must be performed. The
recovery image only provides the basic functionality that is required to perform the update;
therefore, other SPS features are not functional when the update is in progress.
3.3.4.2
Management Engine Interaction
ME-BMC interactions include the following:
BMC stores sensor data records for ME-owned sensors.
BMC participates in ME firmware update.
BMC initializes ME-owned sensors based on SDRs.
BMC receives platform event messages sent by the ME.
BMC notifies ME of POST completion.
BMC may be queried by the ME for inlet temperature readings.
BMC uses the ICH10R fan tachs through the ME.
3.3.5 Intel
®
Virtualization Technology for Directed I/O (Intel
®
VT-d) (rev. 2)
Intel
®
Virtualization Technology (Intel
®
VT) is the technology that makes a single system appear
as multiple independent systems to software loaded on the system. This allows for multiple
independent operating systems to be running simultaneously on a single system. The first
revision of this technology (Intel
®
Virtualization Technology for Intel
®
IA-32 Architecture or Intel
®
VT-x) adds hardware support in the processor to improve the virtualization performance and
robustness. The second revision of this specification (Intel
®
VT-d) adds a chipset hardware
implementation to improve I/O performance and robustness.
