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add more comments for gEfiMdeModulePkgTokenSpaceGuid.PcdTurnOffUsbLegacySupport. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10032 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu 2010-02-20 07:11:13 +00:00
parent c943ee0336
commit c39c3e2190
2 changed files with 3 additions and 2 deletions
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2
MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c
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@ -1704,7 +1704,7 @@ EhcDriverBindingStart (
}
//
// Robustnesss improvement such as for UoL
// Robustnesss improvement such as for Duet platform
// Default is not required.
//
if (FeaturePcdGet (PcdTurnOffUsbLegacySupport)) {

1
MdeModulePkg/MdeModulePkg.dec
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@ -220,6 +220,7 @@
## If TRUE, force to switch off the support of legacy usb. So legacy usb device driver can not make use of SMI
# interrupt to access usb device in the case of absence of usb stack.
# DUET platform requires the token to be TRUE.
gEfiMdeModulePkgTokenSpaceGuid.PcdTurnOffUsbLegacySupport|FALSE|BOOLEAN|0x00010047
## If TRUE, HiiImageProtocol will be installed.