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System Management: Firmware Upgrade
KAT4000 User’s Manual 10007175-02
9-52
2 The upgrade initiator resends the Firmware Upgrade Start command and the Boot Loader
returns a success reply indicating that an upgrade session has been opened.
3 The upgrade initiator issues a Firmware Upgrade Prepare (master H8S flash) command to
erase the master H8S flash. The Boot Loader erases the master H8S flash and returns a
success reply.
4 The upgrade initiator sequentially writes the new master H8S firmware to the master H8S
flash using the Flash Upgrade Write command. The Boot Loader acknowledges each write
by sending a success reply to the upgrade initiator.
5 The upgrade initiator issues a Firmware Upgrade Prepare (slave H8S flash) command to
erase the slave H8S flash. The Boot Loader writes the cached data to the master H8S flash,
erases the slave H8S flash, and returns a success reply.
6 The upgrade initiator sequentially writes the new slave H8S firmware to the slave H8S flash
using the Flash Upgrade Write command. The Boot Loader acknowledges each write by
sending a success reply to the upgrade initiator.
7 The upgrade initiator sends a Firmware Upgrade Complete command to finish the firmware
upgrade. The Boot Loader writes the remaining cached data to the slave H8S flash and
reboots the IPMC. After reset, the Boot Loader validates the master H8S firmware
checksum and passes control to the IPMC.