Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 874
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Figure 13-2.
EFI
Next the operating system startup code invalidates the ALAT via the invala instruction.
The invala in complete form will invalidate all entries in the ALAT.
2:626
Control Flow of Boot Process in a Multiprocessor Configuration
Power On
PAL
PALE_RESET
PAL_RESET
SALE_ENTRY
SAL_RESET
BSP Selection
BSP?
No
Yes
Initialization
& Memory Test
PAL Late Self-test
Wake APs for
PAL Late Self-test
Load OSLoader
from Boot Device
Handoff to the
Itanium-based OS
OS_Loader
Set Wakeup Entry
Wakeup APs
Itanium-based OS will
wake up the APs
Yes
Recovery?
No
Rendezvous_1
Volume 2, Part 2: Firmware Overview
Optional
Update Firmware
Do System Reset
APs
No
Rendez
Interrupt?
Yes
PAL Late Self-test
Rendezvous_2
No
Rendez
Interrupt?
Yes
Handoff to the
Itanium-based OS
Call to OS
BOOT_RENDEZ
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