mirror of https://github.com/acidanthera/audk.git
356 lines
9.1 KiB
Plaintext
356 lines
9.1 KiB
Plaintext
/** @file
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The TPM definition block in ACPI table for physical presence
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and MemoryClear.
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Copyright (c) 2011 - 2015, 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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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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DefinitionBlock (
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"Tpm.aml",
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"SSDT",
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2,
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"INTEL ",
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"TcgTable",
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0x1000
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)
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{
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Scope (\_SB)
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{
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Device (TPM)
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{
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//
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// Define _HID, "PNP0C31" is defined in
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// "Secure Startup-FVE and TPM Admin BIOS and Platform Requirements"
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//
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Name (_HID, EISAID ("PNP0C31"))
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//
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// Readable name of this device, don't know if this way is correct yet
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//
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Name (_STR, Unicode ("TPM 1.2 Device"))
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//
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// Return the resource consumed by TPM device
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//
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Name (_CRS, ResourceTemplate () {
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Memory32Fixed (ReadWrite, 0xfed40000, 0x5000)
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})
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//
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// Operational region for Smi port access
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//
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OperationRegion (SMIP, SystemIO, 0xB2, 1)
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Field (SMIP, ByteAcc, NoLock, Preserve)
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{
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IOB2, 8
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}
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//
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// Operational region for TPM access
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//
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OperationRegion (TPMR, SystemMemory, 0xfed40000, 0x5000)
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Field (TPMR, AnyAcc, NoLock, Preserve)
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{
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ACC0, 8,
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}
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//
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// Operational region for TPM support, TPM Physical Presence and TPM Memory Clear
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// Region Offset 0xFFFF0000 and Length 0xF0 will be fixed in C code.
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//
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OperationRegion (TNVS, SystemMemory, 0xFFFF0000, 0xF0)
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Field (TNVS, AnyAcc, NoLock, Preserve)
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{
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PPIN, 8, // Software SMI for Physical Presence Interface
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PPIP, 32, // Used for save physical presence paramter
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PPRP, 32, // Physical Presence request operation response
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PPRQ, 32, // Physical Presence request operation
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LPPR, 32, // Last Physical Presence request operation
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FRET, 32, // Physical Presence function return code
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MCIN, 8, // Software SMI for Memory Clear Interface
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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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}
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Method (PTS, 1, Serialized)
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{
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//
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// Detect Sx state for MOR, only S4, S5 need to handle
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//
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If (LAnd (LLess (Arg0, 6), LGreater (Arg0, 3)))
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{
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//
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// Bit4 -- DisableAutoDetect. 0 -- Firmware MAY autodetect.
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//
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If (LNot (And (MORD, 0x10)))
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{
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//
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// Triggle the SMI through ACPI _PTS method.
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//
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Store (0x02, MCIP)
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//
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// Triggle the SMI interrupt
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//
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Store (MCIN, IOB2)
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}
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}
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Return (0)
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}
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Method (_STA, 0)
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{
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if (LEqual (ACC0, 0xff))
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{
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Return (0)
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}
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Return (0x0f)
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}
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//
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// TCG Hardware Information
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//
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Method (HINF, 3, Serialized, 0, {BuffObj, PkgObj}, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj
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{
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//
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// Switch by function index
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//
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Switch (ToInteger(Arg1))
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{
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Case (0)
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{
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//
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// Standard query
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//
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Return (Buffer () {0x03})
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}
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Case (1)
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{
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//
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// Return failure if no TPM present
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//
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Name(TPMV, Package () {0x01, Package () {0x1, 0x20}})
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if (LEqual (_STA (), 0x00))
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{
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Return (Package () {0x00})
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}
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//
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// Return TPM version
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//
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Return (TPMV)
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}
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Default {BreakPoint}
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}
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Return (Buffer () {0})
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}
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Name(TPM2, Package (0x02){
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Zero,
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Zero
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})
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Name(TPM3, Package (0x03){
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Zero,
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Zero,
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Zero
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})
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//
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// TCG Physical Presence Interface
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//
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Method (TPPI, 3, Serialized, 0, {BuffObj, PkgObj, IntObj, StrObj}, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj
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{
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//
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// Switch by function index
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//
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Switch (ToInteger(Arg1))
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{
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Case (0)
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{
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//
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// Standard query, supports function 1-8
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//
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Return (Buffer () {0xFF, 0x01})
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}
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Case (1)
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{
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//
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// a) Get Physical Presence Interface Version
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//
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Return ("1.2")
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}
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Case (2)
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{
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//
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// b) Submit TPM Operation Request to Pre-OS Environment
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//
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Store (DerefOf (Index (Arg2, 0x00)), PPRQ)
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Store (0x02, PPIP)
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//
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// Triggle the SMI interrupt
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//
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Store (PPIN, IOB2)
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Return (FRET)
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}
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Case (3)
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{
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//
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// c) Get Pending TPM Operation Requested By the OS
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//
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Store (PPRQ, Index (TPM2, 0x01))
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Return (TPM2)
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}
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Case (4)
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{
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//
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// d) Get Platform-Specific Action to Transition to Pre-OS Environment
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//
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Return (2)
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}
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Case (5)
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{
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//
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// e) Return TPM Operation Response to OS Environment
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//
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Store (0x05, PPIP)
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//
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// Triggle the SMI interrupt
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//
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Store (PPIN, IOB2)
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Store (LPPR, Index (TPM3, 0x01))
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Store (PPRP, Index (TPM3, 0x02))
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Return (TPM3)
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}
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Case (6)
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{
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//
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// f) Submit preferred user language (Not implemented)
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//
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Return (3)
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}
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Case (7)
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{
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//
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// g) Submit TPM Operation Request to Pre-OS Environment 2
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//
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Store (7, PPIP)
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Store (DerefOf (Index (Arg2, 0x00)), PPRQ)
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//
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// Triggle the SMI interrupt
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//
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Store (PPIN, IOB2)
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Return (FRET)
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}
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Case (8)
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{
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//
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// e) Get User Confirmation Status for Operation
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//
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Store (8, PPIP)
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Store (DerefOf (Index (Arg2, 0x00)), PPRQ)
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//
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// Triggle the SMI interrupt
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//
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Store (PPIN, IOB2)
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Return (FRET)
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}
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Default {BreakPoint}
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}
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Return (1)
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}
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Method (TMCI, 3, Serialized, 0, IntObj, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj
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{
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//
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// Switch by function index
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//
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Switch (ToInteger (Arg1))
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{
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Case (0)
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{
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//
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// Standard query, supports function 1-1
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//
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Return (Buffer () {0x03})
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}
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Case (1)
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{
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//
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// Save the Operation Value of the Request to MORD (reserved memory)
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//
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Store (DerefOf (Index (Arg2, 0x00)), MORD)
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//
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// Triggle the SMI through ACPI _DSM method.
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//
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Store (0x01, MCIP)
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//
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// Triggle the SMI interrupt
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//
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Store (MCIN, IOB2)
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Return (MRET)
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}
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Default {BreakPoint}
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}
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Return (1)
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}
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Method (_DSM, 4, Serialized, 0, UnknownObj, {BuffObj, IntObj, IntObj, PkgObj})
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{
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//
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// TCG Hardware Information
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//
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If(LEqual(Arg0, ToUUID ("cf8e16a5-c1e8-4e25-b712-4f54a96702c8")))
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{
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Return (HINF (Arg1, Arg2, Arg3))
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}
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//
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// TCG Physical Presence Interface
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//
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If(LEqual(Arg0, ToUUID ("3dddfaa6-361b-4eb4-a424-8d10089d1653")))
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{
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Return (TPPI (Arg1, Arg2, Arg3))
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}
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//
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// TCG Memory Clear Interface
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//
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If(LEqual(Arg0, ToUUID ("376054ed-cc13-4675-901c-4756d7f2d45d")))
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{
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Return (TMCI (Arg1, Arg2, Arg3))
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}
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Return (Buffer () {0})
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}
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}
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}
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}
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