ADLINK cExpress-BT2 - Manual (Page 58)

Page 58 cExpress-BT2
7.4.1.1. Boot Configuration > CSM Parameters
Feature Options Description
Compatibility Support Module
Configuration Info
CSM Support Enabled
Disable Enable/Disable CSM Support.
CSM16 Module Version Info only
GataA20 Active Upon Request
Always Upon Request – GA20 can be disabled using BIOS services.
Always – do not allow disabling of GA20; this option is useful
when any RT code is executed above 1MB.
Option ROM Messages Force BIOS
Keep Current Set display mode for Option ROM.
INT19 Trap Response Immediate
Postponed BIOS reaction on INT19 trapping by Option ROM:
Immediate - execute the trap right away; Postponed – execute
the trap during legacy boot.
Boot option filter UEFI and Legacy
Legacy only
UEFI only This option controls legacy/UEFI ROM priority.
Option ROM execution order Info only
Network Do not launch
UEFI only
Legacy only Controls the execution of UEFI and legacy PXE OpROM.
Storage Do not launch
UEFI only
Legacy only Controls the execution of UEFI and legacy storage OpROM.
Video Do not launch
UEFI only
Legacy only Controls the execution of UEFI and legacy video OpROM.
Other PCI devices UEFI only
Legacy only Determines OpROM execution policy for devices other than
network, storage or video.