HSC Firmware Update Intel® Server System S7000FC4UR
Revision 1.0
Intel order number E18291-001
310
31. HSC Firmware Update
The HSC firmware is stored in a separate SPI-compatible EEPROM module. This EEPROM is
only accessible by the HSC to read or write operational code. The HSC reads code actively
from the SPI EEPROM, which can contribute to increased execution times.
31.1 HSC Update Over IPMB
Firmware updates primarily take place via the IPMB. This method requires a firmware update
utility and an Intel hex-format image.
The HSC firmware EEPROM is divided into primary and secondary areas. The primary area
holds operational code that is in use by the HSC. The secondary area stores an incoming
firmware image. The transition between primary and secondary area is handled internally to the
HSC firmware and is transparent to other management controllers.
The following sections explain the IPMI commands used to update the firmware image.
31.1.1 Entering Firmware Transfer Mode
Firmware transfer / update mode can be entered at any time using the Enter Firmware Transfer
Mode command to the HSC. Of the firmware transfer mode commands, only the Enter Firmware
Transfer Mode command is executable from operational mode. The other firmware transfer
commands are recognized only in firmware transfer mode.
31.1.2 Exiting Firmware Transfer Mode
This command causes firmware transfer mode to be exited. If the request data byte is not
present, then the HSC immediately considers it an abort and returns to operational mode. When
the command provides a 01h as request data, the HSC burns the new code, and initiates a hard
reset. Sensor data is not retained across this reset and the controller initializes as if a power on
reset occurred.
The HSC provides an additional response byte indicating expected firmware burn and reboot
time in seconds (0-255).
31.1.3 Firmware Transfer Version
The Get Device ID command returns the version number of the firmware. The HSC returns the
device ID information from the primary code area, regardless of whether it is in firmware update
mode or operational mode. When in firmware transfer mode, the HSC responds to Get Device
ID with a short response. The auxiliary firmware revision data is truncated and the device
available bit is set to 1.
31.1.4 Verifying Entry Into Firmware Transfer Mode
It is possible to verify that the HSC is in firmware transfer mode by sending an IPMI Get Device
ID request. If the HSC responds with a truncated response (missing the auxiliary firmware
revision) and the device available bit is set to 1, then it is in firmware transfer mode.
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