Csm Configuration - Avalue Technology ARC-1532-C2 Quick Reference Manual

3.6.2.13 CSM Configuration

Item
CSM Support
GateA20 Active
Option ROM Messages
INT19 Trap Response
Boot option filter
Network
Storage
Video
Other PCI devices
Options
Enabled[Default]
Disabled,
Upon Request[Default]
Always
Force BIOS[Default]
Keep Current
Immediate[Default]
Postponed
UEFI and Legacy
Legacy only[Default]
UEFI only
Do not launch[Default]
UEFI
Legacy
Do not launch
UEFI
Legacy[Default]
Do not launch
UEFI
Legacy[Default]
Do not launch
UEFI
Legacy[Default]
ARC-1532-C2 Quick Reference Guide 59
Quick Reference Guide
Description
Enable/Disable CSM Support.
UPON REQUEST – GA20 can be disabled
using BIOS services. ALWAYS – do not
allow disabling GA20; this option is useful
when any RT code is executed above 1MB.
Set display mode for Option ROM.
BIOS reaction on INT19 trapping by Option
ROM: IMMEDIATE – execute the trap right
away; POSTONED – execute the trap during
legacy boot.
This option controls Legacy/UEFI ROMs
priority.
Controls the execution of UEFI and Legacy
PXE OpROM.
Controls the execution of UEFI and Legacy
Storage OpROM.
Controls the execution of UEFI and Legacy
Video OpROM.
Determines OpROM execution policy for
devices other than Network, Storage, or
Video.