SecurityPkg:Tcg2Smm:Enabling TPM SIRQ interrupt support

1. Report TPM SIRQ interrupt resource through _CRS
2. Expose _SRS to update interrupt resource & FIFO/TIS interrupt related registers
   defined in TCG PC Client Platform TPM Profile (PTP) Specification spec
https://trustedcomputinggroup.org/wp-content/uploads/PC-Client-Specific-Platform-TPM-Profile-for-TPM-2-0-v43-150126.pdf
Note: IHV/OEM need to carefully verify this feature with OS TPM driver to make sure there is no impact to system/HW

Cc: Long Qin <qin.long@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Long Qin <qin.long@intel.com>
This commit is contained in:
Zhang, Chao B 2017-08-04 14:48:52 +08:00
parent 3c12f346a1
commit edf7647bae
1 changed files with 104 additions and 8 deletions

View File

@ -43,13 +43,6 @@ DefinitionBlock (
// //
Name (_STR, Unicode ("TPM 2.0 Device")) Name (_STR, Unicode ("TPM 2.0 Device"))
//
// Return the resource consumed by TPM device
//
Name (_CRS, ResourceTemplate () {
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000)
})
// //
// Operational region for Smi port access // Operational region for Smi port access
// //
@ -65,7 +58,19 @@ DefinitionBlock (
OperationRegion (TPMR, SystemMemory, 0xfed40000, 0x5000) OperationRegion (TPMR, SystemMemory, 0xfed40000, 0x5000)
Field (TPMR, AnyAcc, NoLock, Preserve) Field (TPMR, AnyAcc, NoLock, Preserve)
{ {
ACC0, 8, ACC0, 8, // TPM_ACCESS_0
Offset(0x8),
INTE, 32, // TPM_INT_ENABLE_0
INTV, 8, // TPM_INT_VECTOR_0
Offset(0x10),
INTS, 32, // TPM_INT_STATUS_0
INTF, 32, // TPM_INTF_CAPABILITY_0
STS0, 32, // TPM_STS_0
Offset(0x24),
FIFO, 32, // TPM_DATA_FIFO_0
Offset(0x30),
TID0, 32, // TPM_INTERFACE_ID_0
// ignore the rest
} }
// //
@ -89,6 +94,97 @@ DefinitionBlock (
UCRQ, 32 // Phyical Presence request operation to Get User Confirmation Status UCRQ, 32 // Phyical Presence request operation to Get User Confirmation Status
} }
Name(RESO, ResourceTemplate () {
Memory32Fixed (ReadWrite, 0xfed40000, 0x5000, REGS)
Interrupt(ResourceConsumer, Level, ActiveLow, Shared, , , IRQ) {12}
})
//
// Return the resource consumed by TPM device.
//
Method(_CRS,0,Serialized)
{
Return(RESO)
}
//
// Set resources consumed by the TPM device. This is used to
// assign an interrupt number to the device. The input byte stream
// has to be the same as returned by _CRS (according to ACPI spec).
//
Method(_SRS,1,Serialized)
{
//
// Update resource descriptor
// Use the field name to identify the offsets in the argument
// buffer and RESO buffer.
//
CreateDWordField(Arg0, ^IRQ._INT, IRQ0)
CreateDWordField(RESO, ^IRQ._INT, LIRQ)
Store(IRQ0, LIRQ)
CreateBitField(Arg0, ^IRQ._HE, ITRG)
CreateBitField(RESO, ^IRQ._HE, LTRG)
Store(ITRG, LTRG)
CreateBitField(Arg0, ^IRQ._LL, ILVL)
CreateBitField(RESO, ^IRQ._LL, LLVL)
Store(ILVL, LLVL)
//
// Update TPM FIFO PTP/TIS interface only, identified by TPM_INTERFACE_ID_x lowest
// nibble.
// 0000 - FIFO interface as defined in PTP for TPM 2.0 is active
// 1111 - FIFO interface as defined in TIS1.3 is active
//
If (LOr(LEqual (And (TID0, 0x0F), 0x00), LEqual (And (TID0, 0x0F), 0x0F))) {
//
// If FIFO interface, interrupt vector register is
// available. TCG PTP specification allows only
// values 1..15 in this field. For other interrupts
// the field should stay 0.
//
If (LLess (IRQ0, 16)) {
Store (And(IRQ0, 0xF), INTV)
}
//
// Interrupt enable register (TPM_INT_ENABLE_x) bits 3:4
// contains settings for interrupt polarity.
// The other bits of the byte enable individual interrupts.
// They should be all be zero, but to avoid changing the
// configuration, the other bits are be preserved.
// 00 - high level
// 01 - low level
// 10 - rising edge
// 11 - falling edge
//
// ACPI spec definitions:
// _HE: '1' is Edge, '0' is Level
// _LL: '1' is ActiveHigh, '0' is ActiveLow (inverted from TCG spec)
//
If (LEqual (ITRG, 1)) {
Or(INTE, 0x00000010, INTE)
} Else {
And(INTE, 0xFFFFFFEF, INTE)
}
if (LEqual (ILVL, 0)) {
Or(INTE, 0x00000008, INTE)
} Else {
And(INTE, 0xFFFFFFF7, INTE)
}
}
}
//
// 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 (PTS, 1, Serialized) Method (PTS, 1, Serialized)
{ {
// //