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

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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1
IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
View File

@ -132,7 +132,6 @@
gEfiLegacyInterruptProtocolGuid # PROTOCOL ALWAYS_CONSUMED
gEfiLegacyRegion2ProtocolGuid # PROTOCOL ALWAYS_CONSUMED
gEfiLegacyBiosProtocolGuid # PROTOCOL ALWAYS_PRODUCED
gEfiTimerArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED
[Pcd]
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdLegacyBiosCacheLegacyRegion

4
IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
View File

@ -40,7 +40,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Protocol/DevicePath.h>
#include <Protocol/Legacy8259.h>
#include <Protocol/PciRootBridgeIo.h>
#include <Protocol/Timer.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
@ -61,9 +60,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Library/DebugAgentLib.h>
//
// System Tickers
//
#define DEFAULT_LAGACY_TIMER_TICK_DURATION 549254
// BUGBUG: This entry maybe changed to PCD in future and wait for
// redesign of BDS library
//

33
IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
View File

@ -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