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ColorBar Display Device States

Overview

Color Bars are used to show current device state for quick reference of the system firmware. The Color Bars supported by Q35 are listed below.

Color Bar Legend

Color Bar Example

ColorDescriptionLocation where Device State is set
RedSecure Boot DisabledMU_OEM_SAMPLE\OemPkg\DeviceStatePei\DeviceStatePei.c
Yellow and Grey CautionUnit Test Mode (Unit Tests Compiled into Firmware)Platforms\QemuQ35Pkg\QemuQ35Pkg.dsc