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Chapter 2: Hardware information
Chapter 2
Q-Code table (continued)
Code Description
6B – 6F
System Agent DXE initialization (System Agent module specic)
70
PCH DXE initialization is started
71
PCH DXE SMM initialization is started
72
PCH devices initialization
73 – 77
PCH DXE Initialization (PCH module specic)
78
ACPI module initialization
79
CSM initialization
7A – 7F
Reserved for future AMI DXE codes
90
Boot Device Selection (BDS) phase is started
91
Driver connecting is started
92
PCI Bus initialization is started
93
PCI Bus Hot Plug Controller Initialization
94
PCI Bus Enumeration
95
PCI Bus Request Resources
96
PCI Bus Assign Resources
97
Console Output devices connect
98
Console input devices connect
99
Super IO Initialization
9A
USB initialization is started
9B
USB Reset
9C
USB Detect
9D
USB Enable
9E – 9F
Reserved for future AMI codes
A0
IDE initialization is started
A1
IDE Reset
A2
IDE Detect
A3
IDE Enable
A4
SCSI initialization is started
A5
SCSI Reset
A6
SCSI Detect
A7
SCSI Enable
A8
Setup Verifying Password
A9
Start of Setup
AA
Reserved for ASL (see ASL Status Codes section below)
AB
Setup Input Wait
AC
Reserved for ASL (see ASL Status Codes section below)
AD
Ready To Boot event
AE
Legacy Boot event
AF
Exit Boot Services event
B0
Runtime Set Virtual Address MAP Begin