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SecurityPkg: Tcg2Smm: Enable TPM2.0 interrupt support 

1. Expose _CRS, _SRS, _PRS control method to support TPM interrupt
2. Provide 2 PCDs to configure _CRS and _PRS returned data

Cc: Yao Jiewen <jiewen.yao@intel.com>
Cc: Ronald Aigner <Ronald.Aigner@microsoft.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Yao Jiewen <jiewen.yao@intel.com>
This commit is contained in:
Zhang, Chao B 2018-01-08 10:13:54 +08:00
parent 630cb8507b
commit c4122dcaad
5 changed files with 388 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
SecurityPkg/SecurityPkg.dec
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@ -450,6 +450,16 @@
# @Prompt Initial setting of TCG2 Persistent Firmware Management Flags # @Prompt Initial setting of TCG2 Persistent Firmware Management Flags
gEfiSecurityPkgTokenSpaceGuid.PcdTcg2PhysicalPresenceFlags|0x300E2|UINT32|0x0001001B gEfiSecurityPkgTokenSpaceGuid.PcdTcg2PhysicalPresenceFlags|0x300E2|UINT32|0x0001001B
## Indicate current TPM2 Interrupt Number reported by _CRS control method.<BR><BR>
# TPM2 Interrupt feature is disabled If the pcd is set to 0.<BR>
# @Prompt Current TPM2 Interrupt Number
gEfiSecurityPkgTokenSpaceGuid.PcdTpm2CurrentIrqNum|0x0C|UINT32|0x0001001C
## Indicate platform possible TPM2 Interrupt Number reported by _PRS control method.<BR><BR>
# Possible TPM2 Interrupt Number Buffer will not be reported if TPM2 Interrupt feature is disabled.<BR>
# @Prompt Possible TPM2 Interrupt Number buffer
gEfiSecurityPkgTokenSpaceGuid.PcdTpm2PossibleIrqNumBuf|{0x0C, 0x00, 0x00, 0x00}|VOID*|0x0001001D
[PcdsDynamic, PcdsDynamicEx] [PcdsDynamic, PcdsDynamicEx]
## This PCD indicates Hash mask for TPM 2.0. Bit definition strictly follows TCG Algorithm Registry.<BR><BR> ## This PCD indicates Hash mask for TPM 2.0. Bit definition strictly follows TCG Algorithm Registry.<BR><BR>

274
SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
View File

@ -9,7 +9,7 @@
PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check. PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.
Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR> Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License 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 which accompanies this distribution. The full text of the license may be found at
@ -303,6 +303,251 @@ UpdatePPVersion (
return EFI_NOT_FOUND; return EFI_NOT_FOUND;
} }
/**
Patch interrupt resources returned by TPM _PRS. ResourceTemplate to patch is determined by input
interrupt buffer size. BufferSize, PkgLength and interrupt descirptor in ByteList need to be patched
@param[in, out] Table The TPM item in ACPI table.
@param[in] IrqBuffer Input new IRQ buffer.
@param[in] IrqBuffserSize Input new IRQ buffer size.
@return patch status.
**/
EFI_STATUS
UpdatePossibleResource (
EFI_ACPI_DESCRIPTION_HEADER *Table,
UINT32 *IrqBuffer,
UINT32 IrqBuffserSize
)
{
UINT8 *DataPtr;
UINT8 *DataEndPtr;
UINT32 NewPkgLength;
UINT32 OrignalPkgLength;
NewPkgLength = 0;
OrignalPkgLength = 0;
DataEndPtr = NULL;
//
// Follow ACPI spec
// 6.4.3 Extend Interrupt Descriptor.
// 19.3.3 ASL Resource Template
// 20 AML specification
// to patch TPM ACPI object _PRS returned ResourceTemplate() containing 2 resource descriptors and an auto appended End Tag
//
// AML data is organized by following rule.
// Code need to patch BufferSize and PkgLength and interrupt descirptor in ByteList
//
// ============= Buffer ====================
// DefBuffer := BufferOp PkgLength BufferSize ByteList
// BufferOp := 0x11
//
// ==============PkgLength==================
// PkgLength := PkgLeadByte |
// <PkgLeadByte ByteData> |
// <PkgLeadByte ByteData ByteData> |
// <PkgLeadByte ByteData ByteData ByteData>
//
// PkgLeadByte := <bit 7-6: ByteData count that follows (0-3)>
// <bit 5-4: Only used if PkgLength <= 63 >
// <bit 3-0: Least significant package length nybble>
//
//==============BufferSize==================
// BufferSize := Integar
// Integar := ByteConst|WordConst|DwordConst....
//
// ByteConst := BytePrefix ByteData
//
//==============ByteList===================
// ByteList := ByteData ByteList
//
//=========================================
//
// 1. Check TPM_PRS_RESS with PkgLength <=63 can hold the input interrupt number buffer for patching
//
for (DataPtr = (UINT8 *)(Table + 1);
DataPtr < (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE));
DataPtr += 1) {
if (CompareMem(DataPtr, TPM_PRS_RESS, TPM_PRS_RES_NAME_SIZE) == 0) {
//
// Jump over object name & BufferOp
//
DataPtr += TPM_PRS_RES_NAME_SIZE + 1;
if ((*DataPtr & (BIT7|BIT6)) == 0) {
OrignalPkgLength = (UINT32)*DataPtr;
DataEndPtr = DataPtr + OrignalPkgLength;
//
// Jump over PkgLength = PkgLeadByte only
//
NewPkgLength++;
//
// Jump over BufferSize
//
if (*(DataPtr + 1) == AML_BYTE_PREFIX) {
NewPkgLength += 2;
} else if (*(DataPtr + 1) == AML_WORD_PREFIX) {
NewPkgLength += 3;
} else if (*(DataPtr + 1) == AML_DWORD_PREFIX) {
NewPkgLength += 5;
} else {
ASSERT(FALSE);
return EFI_UNSUPPORTED;
}
} else {
ASSERT(FALSE);
return EFI_UNSUPPORTED;
}
//
// Include Memory32Fixed Descritor (12 Bytes) + Interrupt Descriptor header(5 Bytes) + End Tag(2 Bytes)
//
NewPkgLength += 19 + IrqBuffserSize;
if (NewPkgLength > 63) {
break;
}
if (NewPkgLength > OrignalPkgLength) {
ASSERT(FALSE);
return EFI_INVALID_PARAMETER;
}
//
// 1.1 Patch PkgLength
//
*DataPtr = (UINT8)NewPkgLength;
//
// 1.2 Patch BufferSize = sizeof(Memory32Fixed Descritor + Interrupt Descriptor + End Tag).
// It is Little endian. So only patch lowest byte of BufferSize due to current interrupt number limit.
//
*(DataPtr + 2) = (UINT8)(IrqBuffserSize + 19);
//
// Notify _PRS to report short formed ResourceTemplate
//
mTcgNvs->IsShortFormPkgLength = TRUE;
break;
}
}
//
// 2. Use TPM_PRS_RESL with PkgLength > 63 to hold longer input interrupt number buffer for patching
//
if (NewPkgLength > 63) {
NewPkgLength = 0;
OrignalPkgLength = 0;
for (DataPtr = (UINT8 *)(Table + 1);
DataPtr < (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE));
DataPtr += 1) {
if (CompareMem(DataPtr, TPM_PRS_RESL, TPM_PRS_RES_NAME_SIZE) == 0) {
//
// Jump over object name & BufferOp
//
DataPtr += TPM_PRS_RES_NAME_SIZE + 1;
if ((*DataPtr & (BIT7|BIT6)) != 0) {
OrignalPkgLength = (UINT32)(*(DataPtr + 1) << 4) + (*DataPtr & 0x0F);
DataEndPtr = DataPtr + OrignalPkgLength;
//
// Jump over PkgLength = PkgLeadByte + ByteData length
//
NewPkgLength += 1 + ((*DataPtr & (BIT7|BIT6)) >> 6);
//
// Jump over BufferSize
//
if (*(DataPtr + NewPkgLength) == AML_BYTE_PREFIX) {
NewPkgLength += 2;
} else if (*(DataPtr + NewPkgLength) == AML_WORD_PREFIX) {
NewPkgLength += 3;
} else if (*(DataPtr + NewPkgLength) == AML_DWORD_PREFIX) {
NewPkgLength += 5;
} else {
ASSERT(FALSE);
return EFI_UNSUPPORTED;
}
} else {
ASSERT(FALSE);
return EFI_UNSUPPORTED;
}
//
// Include Memory32Fixed Descritor (12 Bytes) + Interrupt Descriptor header(5 Bytes) + End Tag(2 Bytes)
//
NewPkgLength += 19 + IrqBuffserSize;
if (NewPkgLength > OrignalPkgLength) {
ASSERT(FALSE);
return EFI_INVALID_PARAMETER;
}
//
// 2.1 Patch PkgLength. Only patch PkgLeadByte and first ByteData
//
*DataPtr = (UINT8)((*DataPtr) & 0xF0) | (NewPkgLength & 0x0F);
*(DataPtr + 1) = (UINT8)((NewPkgLength & 0xFF0) >> 4);
//
// 2.2 Patch BufferSize = sizeof(Memory32Fixed Descritor + Interrupt Descriptor + End Tag).
// It is Little endian. Only patch lowest byte of BufferSize due to current interrupt number limit.
//
*(DataPtr + 2 + ((*DataPtr & (BIT7|BIT6)) >> 6)) = (UINT8)(IrqBuffserSize + 19);
//
// Notify _PRS to report long formed ResourceTemplate
//
mTcgNvs->IsShortFormPkgLength = FALSE;
break;
}
}
}
if (DataPtr >= (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE))) {
return EFI_NOT_FOUND;
}
//
// 3. Move DataPtr to Interrupt descriptor header and patch interrupt descriptor.
// 5 bytes for interrupt descriptor header, 2 bytes for End Tag
//
DataPtr += NewPkgLength - (5 + IrqBuffserSize + 2);
//
// 3.1 Patch Length bit[7:0] of Interrupt descirptor patch interrupt descriptor
//
*(DataPtr + 1) = (UINT8)(2 + IrqBuffserSize);
//
// 3.2 Patch Interrupt Table Length
//
*(DataPtr + 4) = (UINT8)(IrqBuffserSize / sizeof(UINT32));
//
// 3.3 Copy patched InterruptNumBuffer
//
CopyMem(DataPtr + 5, IrqBuffer, IrqBuffserSize);
//
// 4. Jump over Interrupt descirptor and Patch END Tag, set Checksum field to 0
//
DataPtr += 5 + IrqBuffserSize;
*DataPtr = ACPI_END_TAG_DESCRIPTOR;
*(DataPtr + 1) = 0;
//
// 5. Jump over whole ResourceTemplate. Stuff rest bytes to NOOP
//
for (DataPtr += 2; DataPtr < DataEndPtr; DataPtr++) {
*DataPtr = AML_NOOP_OP;
}
return EFI_SUCCESS;
}
/** /**
Patch TPM2 device HID string. The initial string tag in TPM2 ACPI table is "NNN0000". Patch TPM2 device HID string. The initial string tag in TPM2 ACPI table is "NNN0000".
@ -424,6 +669,8 @@ PublishAcpiTable (
UINTN TableKey; UINTN TableKey;
EFI_ACPI_DESCRIPTION_HEADER *Table; EFI_ACPI_DESCRIPTION_HEADER *Table;
UINTN TableSize; UINTN TableSize;
UINT32 *PossibleIrqNumBuf;
UINT32 PossibleIrqNumBufSize;
Status = GetSectionFromFv ( Status = GetSectionFromFv (
&gEfiCallerIdGuid, &gEfiCallerIdGuid,
@ -454,6 +701,29 @@ PublishAcpiTable (
return Status; return Status;
} }
if (PcdGet32(PcdTpm2CurrentIrqNum) != 0) {
//
// Patch _PRS interrupt resource only when TPM interrupt is supported
//
PossibleIrqNumBuf = (UINT32 *)PcdGetPtr(PcdTpm2PossibleIrqNumBuf);
PossibleIrqNumBufSize = (UINT32)PcdGetSize(PcdTpm2PossibleIrqNumBuf);
if (PossibleIrqNumBufSize <= MAX_PRS_INT_BUF_SIZE && (PossibleIrqNumBufSize % sizeof(UINT32)) == 0) {
Status = UpdatePossibleResource(Table, PossibleIrqNumBuf, PossibleIrqNumBufSize);
DEBUG ((
DEBUG_INFO,
"UpdatePossibleResource status - %x. TPM2 service may not ready in OS.\n",
Status
));
} else {
DEBUG ((
DEBUG_INFO,
"PcdTpm2PossibleIrqNumBuf size %x is not correct. TPM2 service may not ready in OS.\n",
PossibleIrqNumBufSize
));
}
}
// //
// Measure to PCR[0] with event EV_POST_CODE ACPI DATA // Measure to PCR[0] with event EV_POST_CODE ACPI DATA
// //
@ -471,6 +741,8 @@ PublishAcpiTable (
CopyMem (Table->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Table->OemId) ); CopyMem (Table->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Table->OemId) );
mTcgNvs = AssignOpRegion (Table, SIGNATURE_32 ('T', 'N', 'V', 'S'), (UINT16) sizeof (TCG_NVS)); mTcgNvs = AssignOpRegion (Table, SIGNATURE_32 ('T', 'N', 'V', 'S'), (UINT16) sizeof (TCG_NVS));
ASSERT (mTcgNvs != NULL); ASSERT (mTcgNvs != NULL);
mTcgNvs->TpmIrqNum = PcdGet32(PcdTpm2CurrentIrqNum);
mTcgNvs->IsShortFormPkgLength = FALSE;
// //
// Publish the TPM ACPI table. Table is re-checksumed. // Publish the TPM ACPI table. Table is re-checksumed.

24
SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.h
View File

@ -1,7 +1,7 @@
/** @file /** @file
The header file for Tcg2 SMM driver. The header file for Tcg2 SMM driver.
Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR> Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License 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 which accompanies this distribution. The full text of the license may be found at
@ -39,6 +39,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Library/Tcg2PhysicalPresenceLib.h> #include <Library/Tcg2PhysicalPresenceLib.h>
#include <Library/IoLib.h> #include <Library/IoLib.h>
#include <Library/PrintLib.h> #include <Library/PrintLib.h>
#include <Library/PcdLib.h>
#include <IndustryStandard/TpmPtp.h> #include <IndustryStandard/TpmPtp.h>
@ -64,6 +65,8 @@ typedef struct {
PHYSICAL_PRESENCE_NVS PhysicalPresence; PHYSICAL_PRESENCE_NVS PhysicalPresence;
MEMORY_CLEAR_NVS MemoryClear; MEMORY_CLEAR_NVS MemoryClear;
UINT32 PPRequestUserConfirm; UINT32 PPRequestUserConfirm;
UINT32 TpmIrqNum;
BOOLEAN IsShortFormPkgLength;
} TCG_NVS; } TCG_NVS;
typedef struct { typedef struct {
@ -102,4 +105,23 @@ typedef struct {
#define TPM_HID_PNP_SIZE 8 #define TPM_HID_PNP_SIZE 8
#define TPM_HID_ACPI_SIZE 9 #define TPM_HID_ACPI_SIZE 9
#define TPM_PRS_RESL "RESL"
#define TPM_PRS_RESS "RESS"
#define TPM_PRS_RES_NAME_SIZE 4
//
// Minimum PRS resource template size
// 1 byte for BufferOp
// 1 byte for PkgLength
// 2 bytes for BufferSize
// 12 bytes for Memory32Fixed descriptor
// 5 bytes for Interrupt descriptor
// 2 bytes for END Tag
//
#define TPM_POS_RES_TEMPLATE_MIN_SIZE (1 + 1 + 2 + 12 + 5 + 2)
//
// Max Interrupt buffer size for PRS interrupt resource
// Now support 15 interrupts in maxmum
//
#define MAX_PRS_INT_BUF_SIZE (15*4)
#endif // __TCG_SMM_H__ #endif // __TCG_SMM_H__

5
SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.inf
View File

@ -16,7 +16,7 @@
# This driver will have external input - variable and ACPINvs data in SMM mode. # This driver will have external input - variable and ACPINvs data in SMM mode.
# This external input must be validated carefully to avoid security issue. # This external input must be validated carefully to avoid security issue.
# #
# Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR> # Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials # This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License # 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 # which accompanies this distribution. The full text of the license may be found at
@ -58,6 +58,7 @@
Tpm2CommandLib Tpm2CommandLib
Tcg2PhysicalPresenceLib Tcg2PhysicalPresenceLib
IoLib IoLib
PcdLib
[Guids] [Guids]
## SOMETIMES_PRODUCES ## Variable:L"MemoryOverwriteRequestControl" ## SOMETIMES_PRODUCES ## Variable:L"MemoryOverwriteRequestControl"
@ -82,6 +83,8 @@
gEfiSecurityPkgTokenSpaceGuid.PcdTcgPhysicalPresenceInterfaceVer ## CONSUMES gEfiSecurityPkgTokenSpaceGuid.PcdTcgPhysicalPresenceInterfaceVer ## CONSUMES
gEfiSecurityPkgTokenSpaceGuid.PcdTpm2AcpiTableRev ## CONSUMES gEfiSecurityPkgTokenSpaceGuid.PcdTpm2AcpiTableRev ## CONSUMES
gEfiSecurityPkgTokenSpaceGuid.PcdTpmPlatformClass ## SOMETIMES_CONSUMES gEfiSecurityPkgTokenSpaceGuid.PcdTpmPlatformClass ## SOMETIMES_CONSUMES
gEfiSecurityPkgTokenSpaceGuid.PcdTpm2CurrentIrqNum ## CONSUMES
gEfiSecurityPkgTokenSpaceGuid.PcdTpm2PossibleIrqNumBuf ## CONSUMES
[Depex] [Depex]
gEfiAcpiTableProtocolGuid AND gEfiAcpiTableProtocolGuid AND

96
SecurityPkg/Tcg/Tcg2Smm/Tpm.asl
View File

@ -2,7 +2,7 @@
The TPM2 definition block in ACPI table for TCG2 physical presence The TPM2 definition block in ACPI table for TCG2 physical presence
and MemoryClear. and MemoryClear.
Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR> Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
(c)Copyright 2016 HP Development Company, L.P.<BR> (c)Copyright 2016 HP Development Company, L.P.<BR>
Copyright (c) 2017, Microsoft Corporation. All rights reserved. <BR> Copyright (c) 2017, Microsoft Corporation. All rights reserved. <BR>
This program and the accompanying materials This program and the accompanying materials
@ -92,20 +92,59 @@ DefinitionBlock (
MCIP, 32, // Used for save the Mor paramter MCIP, 32, // Used for save the Mor paramter
MORD, 32, // Memory Overwrite Request Data MORD, 32, // Memory Overwrite Request Data
MRET, 32, // Memory Overwrite function return code MRET, 32, // Memory Overwrite function return code
UCRQ, 32 // Phyical Presence request operation to Get User Confirmation Status UCRQ, 32, // Phyical Presence request operation to Get User Confirmation Status
IRQN, 32, // IRQ Number for _CRS
SFRB, 8 // Is shortformed Pkglength for resource buffer
} }
Name(RESO, ResourceTemplate () { //
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000, REGS) // Possible resource settings returned by _PRS method
// RESS : ResourceTemplate with PkgLength <=63
// RESL : ResourceTemplate with PkgLength > 63
//
// The format of the data has to follow the same format as
// _CRS (according to ACPI spec).
//
Name (RESS, ResourceTemplate() {
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000)
Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , ) {1,2,3,4,5,6,7,8,9,10}
})
Name (RESL, ResourceTemplate() {
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000)
Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , ) {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}
})
//
// Current resource settings for _CRS method
//
Name(RES0, ResourceTemplate () {
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000, REG0)
Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , INTR) {12} Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , INTR) {12}
}) })
Name(RES1, ResourceTemplate () {
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000, REG1)
})
// //
// Return the resource consumed by TPM device. // Return the resource consumed by TPM device.
// //
Method(_CRS,0,Serialized) Method(_CRS,0,Serialized)
{ {
Return(RESO) //
// IRQNum = 0 means disable IRQ support
//
If (LEqual(IRQN, 0)) {
Return (RES1)
}
Else
{
CreateDWordField(RES0, ^INTR._INT, LIRQ)
Store(IRQN, LIRQ)
Return (RES0)
}
} }
// //
@ -113,23 +152,34 @@ DefinitionBlock (
// assign an interrupt number to the device. The input byte stream // assign an interrupt number to the device. The input byte stream
// has to be the same as returned by _CRS (according to ACPI spec). // has to be the same as returned by _CRS (according to ACPI spec).
// //
// Platform may choose to override this function with specific interrupt
// programing logic to replace FIFO/TIS SIRQ registers programing
//
Method(_SRS,1,Serialized) Method(_SRS,1,Serialized)
{ {
//
// Do not configure Interrupt if IRQ Num is configured 0 by default
//
If (LEqual(IRQN, 0)) {
Return (0)
}
// //
// Update resource descriptor // Update resource descriptor
// Use the field name to identify the offsets in the argument // Use the field name to identify the offsets in the argument
// buffer and RESO buffer. // buffer and RES0 buffer.
// //
CreateDWordField(Arg0, ^INTR._INT, IRQ0) CreateDWordField(Arg0, ^INTR._INT, IRQ0)
CreateDWordField(RESO, ^INTR._INT, LIRQ) CreateDWordField(RES0, ^INTR._INT, LIRQ)
Store(IRQ0, LIRQ) Store(IRQ0, LIRQ)
Store(IRQ0, IRQN)
CreateBitField(Arg0, ^INTR._HE, ITRG) CreateBitField(Arg0, ^INTR._HE, ITRG)
CreateBitField(RESO, ^INTR._HE, LTRG) CreateBitField(RES0, ^INTR._HE, LTRG)
Store(ITRG, LTRG) Store(ITRG, LTRG)
CreateBitField(Arg0, ^INTR._LL, ILVL) CreateBitField(Arg0, ^INTR._LL, ILVL)
CreateBitField(RESO, ^INTR._LL, LLVL) CreateBitField(RES0, ^INTR._LL, LLVL)
Store(ILVL, LLVL) Store(ILVL, LLVL)
// //
@ -176,15 +226,25 @@ DefinitionBlock (
} }
} }
// Method(_PRS,0,Serialized)
// Possible resource settings. {
// The format of the data has to follow the same format as //
// _CRS (according to ACPI spec). // IRQNum = 0 means disable IRQ support
// //
Name (_PRS, ResourceTemplate() { If (LEqual(IRQN, 0)) {
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000) Return (RES1)
Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , SIRQ) {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15} } ElseIf(LEqual(SFRB, 0)) {
}) //
// Long format. Possible resources PkgLength > 63
//
Return (RESL)
} Else {
//
// Short format. Possible resources PkgLength <=63
//
Return (RESS)
}
}
Method (PTS, 1, Serialized) Method (PTS, 1, Serialized)
{ {