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1. Added SetLocalApicBaseAdress() and GetLocalApicBaseAddress() APIs in Local APIC library.

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2. Updated Local APIC library instances to get Local APIC base Address by invoking GetLocalApicBaseAddress() instead of by PCD PcdCpuLocalApicBaseAddress.

Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Kinney Michael D <michael.d.kinney@intel.com>
Reviewed-by: Rui Sun <rui.sun@intel.com>



 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13668 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2012-08-23 01:42:01 +00:00
parent abef469fc1
commit a66e0c7da7
5 changed files with 132 additions and 20 deletions
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53
UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
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@@ -3,7 +3,7 @@
This local APIC library instance supports xAPIC mode only.
Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -21,12 +21,57 @@
#include <Library/LocalApicLib.h>
#include <Library/IoLib.h>
#include <Library/TimerLib.h>
#include <Library/PcdLib.h>
//
// Library internal functions
//
/**
Retrieve the base address of local APIC.
@return The base address of local APIC.
**/
UINTN
EFIAPI
GetLocalApicBaseAddress (
VOID
)
{
MSR_IA32_APIC_BASE ApicBaseMsr;
ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE_ADDRESS);
return (UINTN)(LShiftU64 ((UINT64) ApicBaseMsr.Bits.ApicBaseHigh, 32)) +
(((UINTN)ApicBaseMsr.Bits.ApicBaseLow) << 12);
}
/**
Set the base address of local APIC.
If BaseAddress is not aligned on a 4KB boundary, then ASSERT().
@param[in] BaseAddress Local APIC base address to be set.
**/
VOID
EFIAPI
SetLocalApicBaseAddress (
IN UINTN BaseAddress
)
{
MSR_IA32_APIC_BASE ApicBaseMsr;
ASSERT ((BaseAddress & (SIZE_4KB - 1)) == 0);
ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE_ADDRESS);
ApicBaseMsr.Bits.ApicBaseLow = (UINT32) (BaseAddress >> 12);
ApicBaseMsr.Bits.ApicBaseHigh = (UINT32) (RShiftU64((UINT64) BaseAddress, 32));
AsmWriteMsr64 (MSR_IA32_APIC_BASE_ADDRESS, ApicBaseMsr.Uint64);
}
/**
Read from a local APIC register.
@@ -49,7 +94,7 @@ ReadLocalApicReg (
ASSERT ((MmioOffset & 0xf) == 0);
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);
return MmioRead32 (PcdGet32 (PcdCpuLocalApicBaseAddress) + MmioOffset);
return MmioRead32 (GetLocalApicBaseAddress() + MmioOffset);
}
/**
@@ -76,7 +121,7 @@ WriteLocalApicReg (
ASSERT ((MmioOffset & 0xf) == 0);
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);
MmioWrite32 (PcdGet32 (PcdCpuLocalApicBaseAddress) + MmioOffset, Value);
MmioWrite32 (GetLocalApicBaseAddress() + MmioOffset, Value);
}
/**