mirror of https://github.com/acidanthera/audk.git
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
parent
630cb8507b
commit
c4122dcaad
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@ -450,6 +450,16 @@
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# @Prompt Initial setting of TCG2 Persistent Firmware Management Flags
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gEfiSecurityPkgTokenSpaceGuid.PcdTcg2PhysicalPresenceFlags|0x300E2|UINT32|0x0001001B
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## Indicate current TPM2 Interrupt Number reported by _CRS control method.<BR><BR>
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# TPM2 Interrupt feature is disabled If the pcd is set to 0.<BR>
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# @Prompt Current TPM2 Interrupt Number
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gEfiSecurityPkgTokenSpaceGuid.PcdTpm2CurrentIrqNum|0x0C|UINT32|0x0001001C
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## Indicate platform possible TPM2 Interrupt Number reported by _PRS control method.<BR><BR>
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# Possible TPM2 Interrupt Number Buffer will not be reported if TPM2 Interrupt feature is disabled.<BR>
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# @Prompt Possible TPM2 Interrupt Number buffer
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gEfiSecurityPkgTokenSpaceGuid.PcdTpm2PossibleIrqNumBuf|{0x0C, 0x00, 0x00, 0x00}|VOID*|0x0001001D
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[PcdsDynamic, PcdsDynamicEx]
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## This PCD indicates Hash mask for TPM 2.0. Bit definition strictly follows TCG Algorithm Registry.<BR><BR>
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@ -9,7 +9,7 @@
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PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.
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Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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@ -303,6 +303,251 @@ UpdatePPVersion (
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return EFI_NOT_FOUND;
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}
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/**
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Patch interrupt resources returned by TPM _PRS. ResourceTemplate to patch is determined by input
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interrupt buffer size. BufferSize, PkgLength and interrupt descirptor in ByteList need to be patched
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@param[in, out] Table The TPM item in ACPI table.
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@param[in] IrqBuffer Input new IRQ buffer.
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@param[in] IrqBuffserSize Input new IRQ buffer size.
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@return patch status.
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**/
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EFI_STATUS
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UpdatePossibleResource (
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EFI_ACPI_DESCRIPTION_HEADER *Table,
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UINT32 *IrqBuffer,
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UINT32 IrqBuffserSize
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)
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{
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UINT8 *DataPtr;
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UINT8 *DataEndPtr;
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UINT32 NewPkgLength;
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UINT32 OrignalPkgLength;
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NewPkgLength = 0;
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OrignalPkgLength = 0;
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DataEndPtr = NULL;
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//
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// Follow ACPI spec
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// 6.4.3 Extend Interrupt Descriptor.
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// 19.3.3 ASL Resource Template
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// 20 AML specification
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// to patch TPM ACPI object _PRS returned ResourceTemplate() containing 2 resource descriptors and an auto appended End Tag
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//
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// AML data is organized by following rule.
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// Code need to patch BufferSize and PkgLength and interrupt descirptor in ByteList
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//
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// ============= Buffer ====================
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// DefBuffer := BufferOp PkgLength BufferSize ByteList
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// BufferOp := 0x11
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//
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// ==============PkgLength==================
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// PkgLength := PkgLeadByte |
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// <PkgLeadByte ByteData> |
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// <PkgLeadByte ByteData ByteData> |
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// <PkgLeadByte ByteData ByteData ByteData>
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//
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// PkgLeadByte := <bit 7-6: ByteData count that follows (0-3)>
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// <bit 5-4: Only used if PkgLength <= 63 >
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// <bit 3-0: Least significant package length nybble>
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//
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//==============BufferSize==================
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// BufferSize := Integar
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// Integar := ByteConst|WordConst|DwordConst....
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//
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// ByteConst := BytePrefix ByteData
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//
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//==============ByteList===================
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// ByteList := ByteData ByteList
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//
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//=========================================
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//
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// 1. Check TPM_PRS_RESS with PkgLength <=63 can hold the input interrupt number buffer for patching
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//
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for (DataPtr = (UINT8 *)(Table + 1);
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DataPtr < (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE));
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DataPtr += 1) {
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if (CompareMem(DataPtr, TPM_PRS_RESS, TPM_PRS_RES_NAME_SIZE) == 0) {
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//
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// Jump over object name & BufferOp
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//
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DataPtr += TPM_PRS_RES_NAME_SIZE + 1;
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if ((*DataPtr & (BIT7|BIT6)) == 0) {
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OrignalPkgLength = (UINT32)*DataPtr;
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DataEndPtr = DataPtr + OrignalPkgLength;
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//
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// Jump over PkgLength = PkgLeadByte only
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//
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NewPkgLength++;
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//
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// Jump over BufferSize
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//
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if (*(DataPtr + 1) == AML_BYTE_PREFIX) {
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NewPkgLength += 2;
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} else if (*(DataPtr + 1) == AML_WORD_PREFIX) {
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NewPkgLength += 3;
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} else if (*(DataPtr + 1) == AML_DWORD_PREFIX) {
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NewPkgLength += 5;
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} else {
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ASSERT(FALSE);
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return EFI_UNSUPPORTED;
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}
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} else {
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ASSERT(FALSE);
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return EFI_UNSUPPORTED;
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}
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//
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// Include Memory32Fixed Descritor (12 Bytes) + Interrupt Descriptor header(5 Bytes) + End Tag(2 Bytes)
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//
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NewPkgLength += 19 + IrqBuffserSize;
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if (NewPkgLength > 63) {
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break;
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}
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if (NewPkgLength > OrignalPkgLength) {
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ASSERT(FALSE);
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return EFI_INVALID_PARAMETER;
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}
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//
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// 1.1 Patch PkgLength
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//
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*DataPtr = (UINT8)NewPkgLength;
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//
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// 1.2 Patch BufferSize = sizeof(Memory32Fixed Descritor + Interrupt Descriptor + End Tag).
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// It is Little endian. So only patch lowest byte of BufferSize due to current interrupt number limit.
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//
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*(DataPtr + 2) = (UINT8)(IrqBuffserSize + 19);
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//
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// Notify _PRS to report short formed ResourceTemplate
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//
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mTcgNvs->IsShortFormPkgLength = TRUE;
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break;
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}
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}
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//
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// 2. Use TPM_PRS_RESL with PkgLength > 63 to hold longer input interrupt number buffer for patching
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//
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if (NewPkgLength > 63) {
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NewPkgLength = 0;
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OrignalPkgLength = 0;
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for (DataPtr = (UINT8 *)(Table + 1);
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DataPtr < (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE));
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DataPtr += 1) {
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if (CompareMem(DataPtr, TPM_PRS_RESL, TPM_PRS_RES_NAME_SIZE) == 0) {
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//
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// Jump over object name & BufferOp
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//
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DataPtr += TPM_PRS_RES_NAME_SIZE + 1;
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if ((*DataPtr & (BIT7|BIT6)) != 0) {
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OrignalPkgLength = (UINT32)(*(DataPtr + 1) << 4) + (*DataPtr & 0x0F);
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DataEndPtr = DataPtr + OrignalPkgLength;
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//
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// Jump over PkgLength = PkgLeadByte + ByteData length
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//
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NewPkgLength += 1 + ((*DataPtr & (BIT7|BIT6)) >> 6);
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//
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// Jump over BufferSize
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//
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if (*(DataPtr + NewPkgLength) == AML_BYTE_PREFIX) {
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NewPkgLength += 2;
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} else if (*(DataPtr + NewPkgLength) == AML_WORD_PREFIX) {
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NewPkgLength += 3;
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} else if (*(DataPtr + NewPkgLength) == AML_DWORD_PREFIX) {
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NewPkgLength += 5;
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} else {
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ASSERT(FALSE);
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return EFI_UNSUPPORTED;
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}
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} else {
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ASSERT(FALSE);
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return EFI_UNSUPPORTED;
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}
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//
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// Include Memory32Fixed Descritor (12 Bytes) + Interrupt Descriptor header(5 Bytes) + End Tag(2 Bytes)
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//
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NewPkgLength += 19 + IrqBuffserSize;
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if (NewPkgLength > OrignalPkgLength) {
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ASSERT(FALSE);
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return EFI_INVALID_PARAMETER;
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}
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//
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// 2.1 Patch PkgLength. Only patch PkgLeadByte and first ByteData
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//
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*DataPtr = (UINT8)((*DataPtr) & 0xF0) | (NewPkgLength & 0x0F);
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*(DataPtr + 1) = (UINT8)((NewPkgLength & 0xFF0) >> 4);
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//
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// 2.2 Patch BufferSize = sizeof(Memory32Fixed Descritor + Interrupt Descriptor + End Tag).
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// It is Little endian. Only patch lowest byte of BufferSize due to current interrupt number limit.
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//
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*(DataPtr + 2 + ((*DataPtr & (BIT7|BIT6)) >> 6)) = (UINT8)(IrqBuffserSize + 19);
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//
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// Notify _PRS to report long formed ResourceTemplate
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//
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mTcgNvs->IsShortFormPkgLength = FALSE;
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break;
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}
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}
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}
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if (DataPtr >= (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE))) {
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return EFI_NOT_FOUND;
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}
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//
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// 3. Move DataPtr to Interrupt descriptor header and patch interrupt descriptor.
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// 5 bytes for interrupt descriptor header, 2 bytes for End Tag
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//
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DataPtr += NewPkgLength - (5 + IrqBuffserSize + 2);
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//
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// 3.1 Patch Length bit[7:0] of Interrupt descirptor patch interrupt descriptor
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//
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*(DataPtr + 1) = (UINT8)(2 + IrqBuffserSize);
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//
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// 3.2 Patch Interrupt Table Length
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//
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*(DataPtr + 4) = (UINT8)(IrqBuffserSize / sizeof(UINT32));
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//
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// 3.3 Copy patched InterruptNumBuffer
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//
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CopyMem(DataPtr + 5, IrqBuffer, IrqBuffserSize);
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//
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// 4. Jump over Interrupt descirptor and Patch END Tag, set Checksum field to 0
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//
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DataPtr += 5 + IrqBuffserSize;
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*DataPtr = ACPI_END_TAG_DESCRIPTOR;
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*(DataPtr + 1) = 0;
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//
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// 5. Jump over whole ResourceTemplate. Stuff rest bytes to NOOP
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//
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for (DataPtr += 2; DataPtr < DataEndPtr; DataPtr++) {
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*DataPtr = AML_NOOP_OP;
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}
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return EFI_SUCCESS;
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}
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/**
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Patch TPM2 device HID string. The initial string tag in TPM2 ACPI table is "NNN0000".
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@ -424,6 +669,8 @@ PublishAcpiTable (
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UINTN TableKey;
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EFI_ACPI_DESCRIPTION_HEADER *Table;
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UINTN TableSize;
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UINT32 *PossibleIrqNumBuf;
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UINT32 PossibleIrqNumBufSize;
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Status = GetSectionFromFv (
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&gEfiCallerIdGuid,
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@ -454,6 +701,29 @@ PublishAcpiTable (
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return Status;
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}
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if (PcdGet32(PcdTpm2CurrentIrqNum) != 0) {
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//
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// Patch _PRS interrupt resource only when TPM interrupt is supported
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//
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PossibleIrqNumBuf = (UINT32 *)PcdGetPtr(PcdTpm2PossibleIrqNumBuf);
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PossibleIrqNumBufSize = (UINT32)PcdGetSize(PcdTpm2PossibleIrqNumBuf);
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if (PossibleIrqNumBufSize <= MAX_PRS_INT_BUF_SIZE && (PossibleIrqNumBufSize % sizeof(UINT32)) == 0) {
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Status = UpdatePossibleResource(Table, PossibleIrqNumBuf, PossibleIrqNumBufSize);
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DEBUG ((
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DEBUG_INFO,
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"UpdatePossibleResource status - %x. TPM2 service may not ready in OS.\n",
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Status
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));
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} else {
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DEBUG ((
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DEBUG_INFO,
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"PcdTpm2PossibleIrqNumBuf size %x is not correct. TPM2 service may not ready in OS.\n",
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PossibleIrqNumBufSize
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));
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}
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}
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//
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// Measure to PCR[0] with event EV_POST_CODE ACPI DATA
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//
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@ -471,6 +741,8 @@ PublishAcpiTable (
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CopyMem (Table->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Table->OemId) );
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mTcgNvs = AssignOpRegion (Table, SIGNATURE_32 ('T', 'N', 'V', 'S'), (UINT16) sizeof (TCG_NVS));
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ASSERT (mTcgNvs != NULL);
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mTcgNvs->TpmIrqNum = PcdGet32(PcdTpm2CurrentIrqNum);
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mTcgNvs->IsShortFormPkgLength = FALSE;
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//
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// Publish the TPM ACPI table. Table is re-checksumed.
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@ -1,7 +1,7 @@
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/** @file
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The header file for Tcg2 SMM driver.
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Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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@ -39,6 +39,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#include <Library/Tcg2PhysicalPresenceLib.h>
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#include <Library/IoLib.h>
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#include <Library/PrintLib.h>
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#include <Library/PcdLib.h>
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#include <IndustryStandard/TpmPtp.h>
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@ -64,6 +65,8 @@ typedef struct {
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PHYSICAL_PRESENCE_NVS PhysicalPresence;
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MEMORY_CLEAR_NVS MemoryClear;
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UINT32 PPRequestUserConfirm;
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UINT32 TpmIrqNum;
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BOOLEAN IsShortFormPkgLength;
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} TCG_NVS;
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typedef struct {
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@ -102,4 +105,23 @@ typedef struct {
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#define TPM_HID_PNP_SIZE 8
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#define TPM_HID_ACPI_SIZE 9
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#define TPM_PRS_RESL "RESL"
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#define TPM_PRS_RESS "RESS"
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#define TPM_PRS_RES_NAME_SIZE 4
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//
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// Minimum PRS resource template size
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// 1 byte for BufferOp
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// 1 byte for PkgLength
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// 2 bytes for BufferSize
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// 12 bytes for Memory32Fixed descriptor
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// 5 bytes for Interrupt descriptor
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// 2 bytes for END Tag
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//
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#define TPM_POS_RES_TEMPLATE_MIN_SIZE (1 + 1 + 2 + 12 + 5 + 2)
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//
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// Max Interrupt buffer size for PRS interrupt resource
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// Now support 15 interrupts in maxmum
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//
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#define MAX_PRS_INT_BUF_SIZE (15*4)
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#endif // __TCG_SMM_H__
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@ -16,7 +16,7 @@
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# This driver will have external input - variable and ACPINvs data in SMM mode.
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# This external input must be validated carefully to avoid security issue.
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#
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# Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
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# Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
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# This program and the accompanying materials
|
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# are licensed and made available under the terms and conditions of the BSD License
|
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# which accompanies this distribution. The full text of the license may be found at
|
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@ -58,6 +58,7 @@
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Tpm2CommandLib
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Tcg2PhysicalPresenceLib
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IoLib
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PcdLib
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[Guids]
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## SOMETIMES_PRODUCES ## Variable:L"MemoryOverwriteRequestControl"
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@ -82,6 +83,8 @@
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gEfiSecurityPkgTokenSpaceGuid.PcdTcgPhysicalPresenceInterfaceVer ## CONSUMES
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gEfiSecurityPkgTokenSpaceGuid.PcdTpm2AcpiTableRev ## CONSUMES
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gEfiSecurityPkgTokenSpaceGuid.PcdTpmPlatformClass ## SOMETIMES_CONSUMES
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gEfiSecurityPkgTokenSpaceGuid.PcdTpm2CurrentIrqNum ## CONSUMES
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gEfiSecurityPkgTokenSpaceGuid.PcdTpm2PossibleIrqNumBuf ## CONSUMES
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[Depex]
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gEfiAcpiTableProtocolGuid AND
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|
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@ -2,7 +2,7 @@
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The TPM2 definition block in ACPI table for TCG2 physical presence
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and MemoryClear.
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Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
|
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(c)Copyright 2016 HP Development Company, L.P.<BR>
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Copyright (c) 2017, Microsoft Corporation. All rights reserved. <BR>
|
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This program and the accompanying materials
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@ -92,20 +92,59 @@ DefinitionBlock (
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MCIP, 32, // Used for save the Mor paramter
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MORD, 32, // Memory Overwrite Request Data
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MRET, 32, // Memory Overwrite function return code
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UCRQ, 32 // Phyical Presence request operation to Get User Confirmation Status
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UCRQ, 32, // Phyical Presence request operation to Get User Confirmation Status
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IRQN, 32, // IRQ Number for _CRS
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SFRB, 8 // Is shortformed Pkglength for resource buffer
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}
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Name(RESO, ResourceTemplate () {
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Memory32Fixed (ReadWrite, 0xfed40000, 0x5000, REGS)
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//
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// Possible resource settings returned by _PRS method
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// RESS : ResourceTemplate with PkgLength <=63
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// RESL : ResourceTemplate with PkgLength > 63
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//
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// The format of the data has to follow the same format as
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// _CRS (according to ACPI spec).
|
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//
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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}
|
||||
})
|
||||
|
||||
Name(RES1, ResourceTemplate () {
|
||||
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000, REG1)
|
||||
})
|
||||
|
||||
|
||||
//
|
||||
// Return the resource consumed by TPM device.
|
||||
//
|
||||
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
|
||||
// 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)
|
||||
{
|
||||
//
|
||||
// Do not configure Interrupt if IRQ Num is configured 0 by default
|
||||
//
|
||||
If (LEqual(IRQN, 0)) {
|
||||
Return (0)
|
||||
}
|
||||
|
||||
//
|
||||
// Update resource descriptor
|
||||
// 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(RESO, ^INTR._INT, LIRQ)
|
||||
CreateDWordField(RES0, ^INTR._INT, LIRQ)
|
||||
Store(IRQ0, LIRQ)
|
||||
Store(IRQ0, IRQN)
|
||||
|
||||
CreateBitField(Arg0, ^INTR._HE, ITRG)
|
||||
CreateBitField(RESO, ^INTR._HE, LTRG)
|
||||
CreateBitField(RES0, ^INTR._HE, LTRG)
|
||||
Store(ITRG, LTRG)
|
||||
|
||||
CreateBitField(Arg0, ^INTR._LL, ILVL)
|
||||
CreateBitField(RESO, ^INTR._LL, LLVL)
|
||||
CreateBitField(RES0, ^INTR._LL, LLVL)
|
||||
Store(ILVL, LLVL)
|
||||
|
||||
//
|
||||
|
|
@ -176,15 +226,25 @@ DefinitionBlock (
|
|||
}
|
||||
}
|
||||
|
||||
//
|
||||
// Possible resource settings.
|
||||
// The format of the data has to follow the same format as
|
||||
// _CRS (according to ACPI spec).
|
||||
//
|
||||
Name (_PRS, ResourceTemplate() {
|
||||
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000)
|
||||
Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , SIRQ) {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}
|
||||
})
|
||||
Method(_PRS,0,Serialized)
|
||||
{
|
||||
//
|
||||
// IRQNum = 0 means disable IRQ support
|
||||
//
|
||||
If (LEqual(IRQN, 0)) {
|
||||
Return (RES1)
|
||||
} 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)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue