2 The TPM2 definition block in ACPI table for TCG2 physical presence
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6 (c)Copyright 2016 HP Development Company, L.P.<BR>
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35 // TAG for patching TPM2.0 _HID
37 Name (_HID, "NNNN0000")
39 Name (_CID, "MSFT0101")
42 // Readable name of this device, don't know if this way is correct yet
44 Name (_STR, Unicode ("TPM 2.0 Device"))
47 // Operational region for Smi port access
49 OperationRegion (SMIP, SystemIO, 0xB2, 1)
50 Field (SMIP, ByteAcc, NoLock, Preserve)
56 // Operational region for TPM access
58 OperationRegion (TPMR, SystemMemory, 0xfed40000, 0x5000)
59 Field (TPMR, AnyAcc, NoLock, Preserve)
61 ACC0, 8, // TPM_ACCESS_0
63 INTE, 32, // TPM_INT_ENABLE_0
64 INTV, 8, // TPM_INT_VECTOR_0
66 INTS, 32, // TPM_INT_STATUS_0
67 INTF, 32, // TPM_INTF_CAPABILITY_0
68 STS0, 32, // TPM_STS_0
70 FIFO, 32, // TPM_DATA_FIFO_0
72 TID0, 32, // TPM_INTERFACE_ID_0
77 // Operational region for TPM support, TPM Physical Presence and TPM Memory Clear
78 // Region Offset 0xFFFF0000 and Length 0xF0 will be fixed in C code.
80 OperationRegion (TNVS, SystemMemory, 0xFFFF0000, 0xF0)
81 Field (TNVS, AnyAcc, NoLock, Preserve)
83 PPIN, 8, // Software SMI for Physical Presence Interface
84 PPIP, 32, // Used for save physical presence paramter
85 PPRP, 32, // Physical Presence request operation response
86 PPRQ, 32, // Physical Presence request operation
87 PPRM, 32, // Physical Presence request operation parameter
88 LPPR, 32, // Last Physical Presence request operation
89 FRET, 32, // Physical Presence function return code
90 MCIN, 8, // Software SMI for Memory Clear Interface
91 MCIP, 32, // Used for save the Mor paramter
92 MORD, 32, // Memory Overwrite Request Data
93 MRET, 32, // Memory Overwrite function return code
94 UCRQ, 32 // Phyical Presence request operation to Get User Confirmation Status
97 Name(RESO, ResourceTemplate () {
98 Memory32Fixed (ReadWrite, 0xfed40000, 0x5000, REGS)
99 Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , IRQ) {12}
103 // Return the resource consumed by TPM device.
105 Method(_CRS,0,Serialized)
111 // Set resources consumed by the TPM device. This is used to
112 // assign an interrupt number to the device. The input byte stream
113 // has to be the same as returned by _CRS (according to ACPI spec).
115 Method(_SRS,1,Serialized)
118 // Update resource descriptor
119 // Use the field name to identify the offsets in the argument
120 // buffer and RESO buffer.
122 CreateDWordField(Arg0, ^IRQ._INT, IRQ0)
123 CreateDWordField(RESO, ^IRQ._INT, LIRQ)
126 CreateBitField(Arg0, ^IRQ._HE, ITRG)
127 CreateBitField(RESO, ^IRQ._HE, LTRG)
130 CreateBitField(Arg0, ^IRQ._LL, ILVL)
131 CreateBitField(RESO, ^IRQ._LL, LLVL)
135 // Update TPM FIFO PTP/TIS interface only, identified by TPM_INTERFACE_ID_x lowest
137 // 0000 - FIFO interface as defined in PTP for TPM 2.0 is active
138 // 1111 - FIFO interface as defined in TIS1.3 is active
140 If (LOr(LEqual (And (TID0, 0x0F), 0x00), LEqual (And (TID0, 0x0F), 0x0F))) {
142 // If FIFO interface, interrupt vector register is
143 // available. TCG PTP specification allows only
144 // values 1..15 in this field. For other interrupts
145 // the field should stay 0.
147 If (LLess (IRQ0, 16)) {
148 Store (And(IRQ0, 0xF), INTV)
151 // Interrupt enable register (TPM_INT_ENABLE_x) bits 3:4
152 // contains settings for interrupt polarity.
153 // The other bits of the byte enable individual interrupts.
154 // They should be all be zero, but to avoid changing the
155 // configuration, the other bits are be preserved.
161 // ACPI spec definitions:
162 // _HE: '1' is Edge, '0' is Level
163 // _LL: '1' is ActiveHigh, '0' is ActiveLow (inverted from TCG spec)
165 If (LEqual (ITRG, 1)) {
166 Or(INTE, 0x00000010, INTE)
168 And(INTE, 0xFFFFFFEF, INTE)
170 if (LEqual (ILVL, 0)) {
171 Or(INTE, 0x00000008, INTE)
173 And(INTE, 0xFFFFFFF7, INTE)
179 // Possible resource settings.
180 // The format of the data has to follow the same format as
181 // _CRS (according to ACPI spec).
183 Name (_PRS, ResourceTemplate() {
184 Memory32Fixed (ReadWrite, 0xfed40000, 0x5000)
185 Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , SIRQ) {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}
188 Method (PTS, 1, Serialized)
191 // Detect Sx state for MOR, only S4, S5 need to handle
193 If (LAnd (LLess (Arg0, 6), LGreater (Arg0, 3)))
196 // Bit4 -- DisableAutoDetect. 0 -- Firmware MAY autodetect.
198 If (LNot (And (MORD, 0x10)))
201 // Triggle the SMI through ACPI _PTS method.
206 // Triggle the SMI interrupt
216 if (LEqual (ACC0, 0xff))
224 // TCG Hardware Information
226 Method (HINF, 3, Serialized, 0, {BuffObj, PkgObj}, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj
229 // Switch by function index
231 Switch (ToInteger(Arg1))
238 Return (Buffer () {0x03})
243 // Return failure if no TPM present
245 Name(TPMV, Package () {0x01, Package () {0x2, 0x0}})
246 if (LEqual (_STA (), 0x00))
248 Return (Package () {0x00})
252 // Return TPM version
258 Return (Buffer () {0})
261 Name(TPM2, Package (0x02){
266 Name(TPM3, Package (0x03){
273 // TCG Physical Presence Interface
275 Method (TPPI, 3, Serialized, 0, {BuffObj, PkgObj, IntObj, StrObj}, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj
278 // Switch by function index
280 Switch (ToInteger(Arg1))
285 // Standard query, supports function 1-8
287 Return (Buffer () {0xFF, 0x01})
292 // a) Get Physical Presence Interface Version
299 // b) Submit TPM Operation Request to Pre-OS Environment
302 Store (DerefOf (Index (Arg2, 0x00)), PPRQ)
307 // Triggle the SMI interrupt
317 // c) Get Pending TPM Operation Requested By the OS
320 Store (PPRQ, Index (TPM2, 0x01))
326 // d) Get Platform-Specific Action to Transition to Pre-OS Environment
333 // e) Return TPM Operation Response to OS Environment
338 // Triggle the SMI interrupt
342 Store (LPPR, Index (TPM3, 0x01))
343 Store (PPRP, Index (TPM3, 0x02))
351 // f) Submit preferred user language (Not implemented)
360 // g) Submit TPM Operation Request to Pre-OS Environment 2
363 Store (DerefOf (Index (Arg2, 0x00)), PPRQ)
365 If (LEqual (PPRQ, 23)) {
366 Store (DerefOf (Index (Arg2, 0x01)), PPRM)
370 // Triggle the SMI interrupt
378 // e) Get User Confirmation Status for Operation
381 Store (DerefOf (Index (Arg2, 0x00)), UCRQ)
384 // Triggle the SMI interrupt
396 Method (TMCI, 3, Serialized, 0, IntObj, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj
399 // Switch by function index
401 Switch (ToInteger (Arg1))
406 // Standard query, supports function 1-1
408 Return (Buffer () {0x03})
413 // Save the Operation Value of the Request to MORD (reserved memory)
415 Store (DerefOf (Index (Arg2, 0x00)), MORD)
418 // Triggle the SMI through ACPI _DSM method.
423 // Triggle the SMI interrupt
433 Method (_DSM, 4, Serialized, 0, UnknownObj, {BuffObj, IntObj, IntObj, PkgObj})
437 // TCG Hardware Information
439 If(LEqual(Arg0, ToUUID ("cf8e16a5-c1e8-4e25-b712-4f54a96702c8")))
441 Return (HINF (Arg1, Arg2, Arg3))
445 // TCG Physical Presence Interface
447 If(LEqual(Arg0, ToUUID ("3dddfaa6-361b-4eb4-a424-8d10089d1653")))
449 Return (TPPI (Arg1, Arg2, Arg3))
453 // TCG Memory Clear Interface
455 If(LEqual(Arg0, ToUUID ("376054ed-cc13-4675-901c-4756d7f2d45d")))
457 Return (TMCI (Arg1, Arg2, Arg3))
460 Return (Buffer () {0})