PT CPC5565, User Manual, Page: 76 / 118

Chapter 4: System Monitoring and Alarms
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Set Payload Shutdown Timeout Command
To change the payload shutdown timeout, the Set Payload Shutdown Timeout command is
used:
[B8 xx 16 0A 40 00 <LSB byte of timeout> <MSB byte of timeout> ]
Get Geographic Address Command
The IPMC allows reading the geographic address of the module using the Get Geographic
Address command, which has the following synopsis:
[B8 xx 2C 0A 40 00]
The IPMC responds to the Get IPMB Address command with the following reply:
[BC xx 2C 00 0A 40 00 <geographic address> ]
Firmware Upgrade Process
The IPMC firmware supports a reliable field upgrade procedure compatible with the HPM.1
Specification . The key features of the firmware upgrade procedures are as follows:
• The upgrade can be performed over the serial debug/payload interface or over IPMB.
• The upgrade procedure is performed while the IPMC firmware is online and operating normally.
• Upgrades of the firmware component are reliable. A failure in the download (error or interruption)
does not disturb the IPMC's ability to continue using the “old” firmware or its ability to restart the
download process. Upgrades of the boot loader component are not reliable and may render the IPMC
non-functional in case of an incomplete upgrade.
• Upgrades of the firmware component are reversible. The IPMC firmware automatically reverts back
to the previous firmware if there is a problem when first running the new code and can be reverted
manually using the HPM.1-defined
Manual Rollback command. Upgrades of the boot loader
component are not reversible.
HPM.1 Boot Loader
• The HPM.1 boot loader does not perform any upgrade actions
• The HPM.1 boot loader is able to boot either of two redundant copies of the IPMC firmware in flash
• The HPM.1 boot loader is able to automatically rollback a failed copy of the IPMC firmware and
activate the backup one.
• The HPM.1 boot loader can be upgraded in-field as an HPM.1-upgradeable component.