diff options
Diffstat (limited to 'Board/EM/TCG2/Common/Tpm20Acpi/TpmCrb.asl')
| -rw-r--r-- | Board/EM/TCG2/Common/Tpm20Acpi/TpmCrb.asl | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/Board/EM/TCG2/Common/Tpm20Acpi/TpmCrb.asl b/Board/EM/TCG2/Common/Tpm20Acpi/TpmCrb.asl new file mode 100644 index 0000000..43dc77e --- /dev/null +++ b/Board/EM/TCG2/Common/Tpm20Acpi/TpmCrb.asl @@ -0,0 +1,387 @@ +Scope (\_SB.PCI0) +{ + Device (FTPM) + { + // + // Define _HID, "PNP0C31" is defined in + // + Name (_HID, "MSFT0101") + + // + // Readable name of this device, don't know if this way is correct yet + // + Name (_STR, Unicode ("TPM 2.0 Device")) + + // + // Return the resource consumed by TPM device + // + Name(_CRS,ResourceTemplate() + { + Memory32Fixed (ReadOnly, 0xFED70000, 0x1000,PCRS) + }) + + OperationRegion (TPMR, SystemMemory, 0xFED70000, 0x1000) + Field (TPMR, AnyAcc, NoLock, Preserve) + { + Offset(0x04), + FERR, 32, + Offset(0x0c), + BEGN, 32, + } + + OperationRegion (CRBD, SystemMemory, 0xFED70000, 0x1000) + Field (CRBD, AnyAcc, NoLock, Preserve) + { + Offset(0x04), + HERR, 32, + Offset (0x40), + HCMD, 32, + Offset(0x44), + HSTS, 32, + } + + OperationRegion (ASMI, SystemIO, SMIA , 0x1) + Field (ASMI, ByteAcc, NoLock, Preserve) + { + INQ,8 + } + + OperationRegion (BSMI, SystemIO, SMIB , 0x1) + Field (BSMI, ByteAcc, NoLock, Preserve) + { + DAT,8 + } + + Method (_STA, 0) + { + If(LEqual(TTDP, 1)){ + If(LEqual(TTPF, 0)){ + Return (0x0f) + } + } + Return (0x0) + } + + + Method (STRT, 3, Serialized, 0, IntObj, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj + { + // + // Switch by function index + // + Switch (ToInteger (Arg1)) + { + Case (0) + { + // + // Standard query, supports function 1-1 + // + Return (Buffer () {0x03}) + } + Case (1) + { + If(LEqual(Or(And(HSTS,0x00000002),And(HSTS,0x00000001)),0x00000003)) + { + // + // Trigger the FTPM_CMD interrupt + // + Store (0x00000001, HCMD) + } + Else + { + //Set Error Bit + Store(0x00000001,FERR) + //Clear Start Bit + Store(0x00000000,BEGN) + } + Return (0) + } + } + + Return (0) + } + + Method (CRYF, 3, Serialized, 0, {BuffObj, PkgObj}, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj + { + // + // Switch by function index + // + Switch (ToInteger(Arg1)) + { + Case (0) + { + // + // Standard query + // + Return (Buffer () {0x03}) + } + Case (1) + { + // + // Return failure if no TPM present + // + Name(TPMV, Package () {0x01, Package () {0x1, 0x20}}) + Return (TPMV) + } + } + Return (Buffer () {0}) + } + + Method (PPIR, 3, Serialized, 0, {BuffObj, PkgObj, IntObj, StrObj}, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj + { + // + // Switch by function index + // + Switch (ToInteger(Arg1)) + { + Case (0) + { + // + // Standard query, supports function 1-8 + // + return (Buffer() {0xff,0x01}) //support functions 0-6 + } + Case (1) + { + // + // a) Get Physical Presence Interface Version + // + Return ("1.2") + } + + // + // Function 2: Submit TPM Operation request + // Arg3[0]: Integer - Operation Value + case(2) + { + ToInteger(DeRefOf(Index(Arg2,0)), TMF2) //save request in temp flag + Store(0x12, TMF1) + Store(TMF1,DAT) + Store(OFST,INQ) + + if(Lequal(DAT,0xFF)){ + return(0x2) + } + + Store(TMF2,DAT) + Store(OFST,INQ) + + if(Lequal(DAT,0xFF)){ + return(0x2) + } + + if(Lequal(DAT,0xF1)){ + return(0x1) + } + + return (Zero) //Success + } + + // + // Function 3: Get pending TPM operation + case(3) + { + Name(PPI1, Package(){0,0}) + Store(0x11,DAT) //read rqst operation + Store(OFST,INQ) //should cause SMI + + if(Lequal(DAT,0xFF)){ + return(0x1) + } + + Store(DAT, Index(PPI1,1)) + return(PPI1) + } + + // + // Function 4: Get platform-specific action to transition + // ot Pre-OS + // Returns: + // 0: None + // 1: Shutdown + // 2: Reboot + // 3: OS Vendor Specific + case(4) + { + return (TRST) //Shutdown + } + + // + // Function 5: Return TPM responce + // + case(5) + { + Name(PPI2, Package(){0,0,0}) + Store(0x21,DAT) + Store(OFST,INQ) + Store(DAT, Index(PPI2,1)) + + if(Lequal(DAT,0xFF)){ + return(0x2) + } + + Store(0x31,DAT) + Store(OFST,INQ) + + if(Lequal(DAT,0xFF)){ + return(0x2) + } + + IF (Lequal(DAT, 0xF0)) + { + Store(0x51,DAT) + Store(OFST,INQ) + if(Lequal(DAT,0xFF)){ + Store(0xFFFFFFF0, Index(PPI2,2)) + return(PPI2) + } + } + ElseIF (Lequal(DAT, 0xF1)) + { + Store(0x51,DAT) + Store(OFST,INQ) + if(Lequal(DAT,0xFF)){ + Store(0xFFFFFFF1, Index(PPI2,2)) + return(PPI2) + } + } + Else + {Store(DAT, Index(PPI2,2))} + + return(PPI2) + } + + + // + // Function 6: Submit preferred user language + // Ppi Spec 1.2 section 2.1.6 + // Arg3[0]: String - preferred language code + case(6) + { + return ( 0x03 ) //Success + } + + + // + // Function 7: Submit TPM Operation Request to Pre-OS Environment 2 + // Ppi Spec 1.2 section 2.1.7 + // Arg3[0]: String - preferred language code + case(7) + { + ToInteger(DeRefOf(Index(Arg2,0)), TMF2) //save request in temp flag + Store(0x12, TMF1) + Store(TMF1,DAT) + Store(OFST,INQ) + + if(Lequal(DAT,0xFF)){ + return(0x2) + } + + Store(TMF2,DAT) + Store(OFST,INQ) + + if(Lequal(DAT,0xFF)){ + return(0x2) + } + + if(Lequal(DAT,0xF1)){ + return(0x1) + } + + return (Zero) //Success + } + + case(8) + { + ToInteger(DeRefOf(Index(Arg2,0)), TMF2) //save request in temp flag + Store(0x43, TMF1) + Store(TMF1,DAT) + Store(OFST,INQ) + Store(TMF2,DAT) + Store(OFST,INQ) + return (DAT) + } + + default { } + } + } + + Method (MORI, 3, Serialized, 0, IntObj, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj + { + // + // Switch by function index + // + Switch (ToInteger (Arg1)) + { + // + // Function 0: Return supported funcitons + // + case(0) + { + return (Buffer() {0x3}) //support functions 0 and 1 + } + + // + // Function 1: Set MOR Bit State + // + case(1) + { + Store(0x22, TMF1) + Store(TMF1,DAT) + Store(OFST,INQ) + + if(Lequal(DAT,0xFF)){ + return(0x2) + } + + ToInteger(DeRefOf(Index(Arg2,0)), TMF1) //save request in temp flag + Store(TMF1,DAT) + Store(OFST,INQ) + + if(Lequal(DAT,0xFF)){ + return(0x2) + } + + return (Zero) + } + default { } + } + return (Buffer() {0}) + } + + Method (_DSM, 4, Serialized, 0, UnknownObj, {BuffObj, IntObj, IntObj, PkgObj}) + { + + // + // TCG Physical Presence Interface + // + If(LEqual(Arg0, ToUUID ("3dddfaa6-361b-4eb4-a424-8d10089d1653"))) + { + Return (PPIR (Arg1, Arg2, Arg3)) + } + + // + // TCG Memory Clear Interface + // + If(LEqual(Arg0, ToUUID ("376054ed-cc13-4675-901c-4756d7f2d45d"))) + { + Return (MORI (Arg1, Arg2, Arg3)) + } + + // + // TPM2 ACPI Start Method + // + If(LEqual(Arg0, ToUUID ("cf8e16a5-c1e8-4e25-b712-4f54a96702c8"))) + { + Return (CRYF (Arg1, Arg2, Arg3)) + } + + If(LEqual(Arg0, ToUUID ("6bbf6cab-5463-4714-b7cd-f0203c0368d4"))) + { + Return (STRT (Arg1, Arg2, Arg3)) + } + + Return (Buffer () {0}) + } + + } +}
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