SOM-5871 User Manual
60
3.1.2.16
CSM Configuration
Feature
Options
Description
CSM Support
Disabled
Enabled
Enable/disable CSM support.
Gate A20 Active
Upon Request
Always
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.
INT19 Trap Response
Immediate
Postponed
BIOS reaction on INT19 trapping by Option
ROM: IMMEDIATE - execute the trap right
away; POSTPONED - execute the trap dur-
ing legacy boot.
Boot option filter
UEFI and Legacy
Legacy only
UEFI only
This option controls Legacy/UEFI ROMs pri-
ority
Network
Do not launch
UEFI
Legacy
Controls the execution of UEFI and Legacy
PXE OpROM
Storage
Do not launch
UEFI
Legacy
Controls the execution of UEFI and Legacy
Storage OpROM
Video
Do not launch
UEFI
Legacy
Controls the execution of UEFI and Legacy
Video OpROM
Other PCI Devices
Do not launch
UEFI
Legacy
Determines OpROM execution policy for
devices other than Network, Storage, or
Video
Summary of Contents for SOM-5871
Page 1: ...User Manual SOM 5871 COM Express Basic Module ...
Page 12: ...SOM 5871 User Manual 4 1 2 Functional Block Diagram ...
Page 28: ...SOM 5871 User Manual 20 ...
Page 84: ...SOM 5871 User Manual 76 ...
Page 87: ...79 SOM 5871 User Manual Chapter 4 S W Introduction Installation ...
Page 88: ...SOM 5871 User Manual 80 ...