Artesyn ARTM-831X Installation and Use (June 2014) - Manual (Page 97)

Module Management Controller
ARTM-831X Installation and Use (6806800M76E) 97
The Application layer also can operate in standalone mode intended to debug the payload
without requiring a shelf manager.
5.3 HPM.1 Firmware Upgrade and Crisis Recovery
The IPMI firmware of the MMC is fully HPM.1 compliant and provides the following
components:
 Boot Loader
 Active IPMI firmware
 Backup IPMI firmware
The boot loader maintains redundant copies of the firmware in flash. Each time the IPMI
firmware is upgraded, a redundant copy of the current IPMI firmware is made in flash. Once the
new IPMI firmware is programmed, the IPMI controller will reset itself to boot from the new
image. The boot loader also validates new IPMI firmware images. Provided the IPMI controller
can power up successfully the actual image is made active and the previously active image is
made backup. In case of power up fails, the boot loader will automatically recover from crisis
and boots from the image before.
Figure 5-2 Firmware Architecture
x Sensor Management
x FRU Inventory
x IPMB-L Interface Communication
x Standalone Mode
Application
Layer
x Low Level Initialization
x Time Management Facility
x Device Drivers
Hardware
Abstraction
Layer
Active MMC firmware
Application
Layer
x Low Level Initialization
x Time Management Facility
x Device Drivers
Hardware
Abstraction
Layer
Backup MMC firmware
x Firmware validation/upgrade
x POST
x Boot
Boot
Loader
Hardware
x Sensor Management
x FRU Inventory
x IPMB-L Interface Communication
x Standalone Mode