Artesyn ATCA-F125 Installation and Use Guide (April 2014) - Manual (Page 74)

Functional Description
ATCA-F125 (6873M Artwork) Installation and Use (6806800J94J) 74
4.6 Boot and User Flashes
Two 256 Mbit NOR Flash devices are used as boot devices for the service processor. The flash
devices used will be Numonyx PC28F256P33BF or equivalent devices. The data bus width to
the flash devices is 16 bit, supporting word accesses only.
4.6.1 Boot Flash Backup Recovery
By default, the payload processor boots from the Boot Flash device #1. An IPMI OEM command
can be used to send a message to the IPMC to change the boot device. The IPMC provides an
IPMI sensor to control the signal BOOT_SELECT. If the BOOT_SELECT signal is set high, the
payload processor will boot from Boot Flash device #2 after reset. The boot device from which
the service processor has booted (active bank) is write protected and cannot be
reprogrammed, whereas the redundant boot device can be erased and reprogrammed.
Figure 4-4 Boot PROM Backup Recovery