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Remove the code added originally to restore 8254 timer to 54ms.

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Signed-off-by: li-elvin
Reviewed-by: jyao1


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12109 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
li-elvin
2011-08-09 05:39:20 +00:00
parent 6bae492fb4
commit 47a43df2df
3 changed files with 0 additions and 38 deletions
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33
IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
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@@ -819,14 +819,11 @@ GenericLegacyBoot (
VOID *AcpiTable;
UINTN ShadowAddress;
UINT32 Granularity;
EFI_TIMER_ARCH_PROTOCOL *Timer;
UINT64 TimerPeriod;
LocalHddInfo = NULL;
HddCount = 0;
BbsCount = 0;
LocalBbsTable = NULL;
TimerPeriod = 0;
Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
DEBUG_CODE (
@@ -841,36 +838,6 @@ GenericLegacyBoot (
EfiToLegacy16BootTable->MajorVersion = EFI_TO_LEGACY_MAJOR_VERSION;
EfiToLegacy16BootTable->MinorVersion = EFI_TO_LEGACY_MINOR_VERSION;
//
// Before starting the Legacy boot check the system ticker.
//
Status = gBS->LocateProtocol (
&gEfiTimerArchProtocolGuid,
NULL,
(VOID **) &Timer
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = Timer->GetTimerPeriod (
Timer,
&TimerPeriod
);
if (EFI_ERROR (Status)) {
return Status;
}
if (TimerPeriod != DEFAULT_LAGACY_TIMER_TICK_DURATION) {
Status = Timer->SetTimerPeriod (
Timer,
DEFAULT_LAGACY_TIMER_TICK_DURATION
);
if (EFI_ERROR (Status)) {
return Status;
}
}
//
// If booting to a legacy OS then force HDD drives to the appropriate