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1. Read 32bit CPU Init APIC ID from CPUID leaf B in XAPIC mode. 

2. Read CPU APIC ID from CPUID leaf B in case CPU Init APIC ID is larger 255 in XAPIC mode.

Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14674 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jeff Fan 2013-09-16 08:42:59 +00:00 committed by vanjeff
parent e6cc2ab38e
commit 6e3e4d70d4
4 changed files with 53 additions and 11 deletions
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4
UefiCpuPkg/Include/Library/LocalApicLib.h
View File

@ -4,7 +4,7 @@
Local APIC library assumes local APIC is enabled. It does not
handles cases where local APIC is disabled.
Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2013, 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
@ -78,7 +78,7 @@ SetApicMode (
/**
Get the initial local APIC ID of the executing processor assigned by hardware upon power on or reset.
In xAPIC mode, the initial local APIC ID is 8-bit, and may be different from current APIC ID.
In xAPIC mode, the initial local APIC ID may be different from current APIC ID.
In x2APIC mode, the local APIC ID can't be changed and there is no concept of initial APIC ID. In this case,
the 32-bit local APIC ID is returned as initial APIC ID.

4
UefiCpuPkg/Include/Register/LocalApic.h
View File

@ -1,7 +1,7 @@
/** @file
IA32 Local APIC Definitions.
Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2013, 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
@ -23,7 +23,9 @@
//
// Definitions for CPUID instruction
//
#define CPUID_SIGNATURE 0x0
#define CPUID_VERSION_INFO 0x1
#define CPUID_EXTENDED_TOPOLOGY 0xB
#define CPUID_EXTENDED_FUNCTION 0x80000000
#define CPUID_VIR_PHY_ADDRESS_SIZE 0x80000008

33
UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
View File

@ -3,7 +3,7 @@
This local APIC library instance supports xAPIC mode only.
Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2013, 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
@ -207,7 +207,7 @@ SetApicMode (
/**
Get the initial local APIC ID of the executing processor assigned by hardware upon power on or reset.
In xAPIC mode, the initial local APIC ID is 8-bit, and may be different from current APIC ID.
In xAPIC mode, the initial local APIC ID may be different from current APIC ID.
In x2APIC mode, the local APIC ID can't be changed and there is no concept of initial APIC ID. In this case,
the 32-bit local APIC ID is returned as initial APIC ID.
@ -219,10 +219,27 @@ GetInitialApicId (
VOID
)
{
UINT32 ApicId;
UINT32 MaxCpuIdIndex;
UINT32 RegEbx;
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);
//
// Get the max index of basic CPUID
//
AsmCpuid (CPUID_SIGNATURE, &MaxCpuIdIndex, NULL, NULL, NULL);
//
// If CPUID Leaf B is supported,
// Then the initial 32-bit APIC ID = CPUID.0BH:EDX
// Else the initial 8-bit APIC ID = CPUID.1:EBX[31:24]
//
if (MaxCpuIdIndex >= CPUID_EXTENDED_TOPOLOGY) {
AsmCpuidEx (CPUID_EXTENDED_TOPOLOGY, 0, NULL, NULL, NULL, &ApicId);
return ApicId;
}
AsmCpuid (CPUID_VERSION_INFO, NULL, &RegEbx, NULL, NULL);
return RegEbx >> 24;
}
@ -241,9 +258,15 @@ GetApicId (
UINT32 ApicId;
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);
ApicId = ReadLocalApicReg (XAPIC_ID_OFFSET);
ApicId >>= 24;
if ((ApicId = GetInitialApicId ()) < 0x100) {
//
// If the initial local APIC ID is less 0x100, read APIC ID from
// XAPIC_ID_OFFSET, otherwise return the initial local APIC ID.
//
ApicId = ReadLocalApicReg (XAPIC_ID_OFFSET);
ApicId >>= 24;
}
return ApicId;
}

23
UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
View File

@ -4,7 +4,7 @@
This local APIC library instance supports x2APIC capable processors
which have xAPIC and x2APIC modes.
Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2013, 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
@ -290,7 +290,7 @@ SetApicMode (
/**
Get the initial local APIC ID of the executing processor assigned by hardware upon power on or reset.
In xAPIC mode, the initial local APIC ID is 8-bit, and may be different from current APIC ID.
In xAPIC mode, the initial local APIC ID may be different from current APIC ID.
In x2APIC mode, the local APIC ID can't be changed and there is no concept of initial APIC ID. In this case,
the 32-bit local APIC ID is returned as initial APIC ID.
@ -302,9 +302,24 @@ GetInitialApicId (
VOID
)
{
UINT32 ApicId;
UINT32 MaxCpuIdIndex;
UINT32 RegEbx;
if (GetApicMode () == LOCAL_APIC_MODE_XAPIC) {
//
// Get the max index of basic CPUID
//
AsmCpuid (CPUID_SIGNATURE, &MaxCpuIdIndex, NULL, NULL, NULL);
//
// If CPUID Leaf B is supported,
// Then the initial 32-bit APIC ID = CPUID.0BH:EDX
// Else the initial 8-bit APIC ID = CPUID.1:EBX[31:24]
//
if (MaxCpuIdIndex >= CPUID_EXTENDED_TOPOLOGY) {
AsmCpuidEx (CPUID_EXTENDED_TOPOLOGY, 0, NULL, NULL, NULL, &ApicId);
return ApicId;
}
AsmCpuid (CPUID_VERSION_INFO, NULL, &RegEbx, NULL, NULL);
return RegEbx >> 24;
} else {
@ -324,11 +339,13 @@ GetApicId (
)
{
UINT32 ApicId;
UINT32 InitApicId;
ApicId = ReadLocalApicReg (XAPIC_ID_OFFSET);
if (GetApicMode () == LOCAL_APIC_MODE_XAPIC) {
ApicId >>= 24;
ApicId = ((InitApicId = GetInitialApicId ()) < 0x100) ? (ApicId >> 24) : InitApicId;
}
return ApicId;
}