diff options
| -rw-r--r-- | src/drivers/pc80/tpm/Kconfig | 8 | ||||
| -rw-r--r-- | src/drivers/pc80/tpm/acpi/tpm.asl | 30 |
2 files changed, 30 insertions, 8 deletions
diff --git a/src/drivers/pc80/tpm/Kconfig b/src/drivers/pc80/tpm/Kconfig index f6a79483dc..0e8a0203df 100644 --- a/src/drivers/pc80/tpm/Kconfig +++ b/src/drivers/pc80/tpm/Kconfig @@ -23,6 +23,14 @@ config TPM_TIS_BASE_ADDRESS Interface Specification 1.2 and should not be changed unless the TPM being used does not conform to TPM TIS 1.2. +config TPM_PIRQ + hex + default 0 + depends on LPC_TPM + help + This can be used to specify a PIRQ to use instead of SERIRQ, + which is needed for SPI TPM interrupt support on x86. + config TPM_INIT_FAILURE_IS_FATAL bool default n diff --git a/src/drivers/pc80/tpm/acpi/tpm.asl b/src/drivers/pc80/tpm/acpi/tpm.asl index 489fec7308..044ff84d07 100644 --- a/src/drivers/pc80/tpm/acpi/tpm.asl +++ b/src/drivers/pc80/tpm/acpi/tpm.asl @@ -63,15 +63,29 @@ Device (TPM) IVEC, 4, /* SERIRQ vector */ } - If (LGreater (IVEC, 0)) { - /* Update interrupt vector */ - CreateField (^IBUF, ^TIRQ._INT, 32, TVEC) - Store (IVEC, TVEC) + CreateField (^IBUF, ^TIRQ._INT, 32, TVEC) + CreateBitField (^IBUF, ^TIRQ._HE, TTYP) + CreateBitField (^IBUF, ^TIRQ._LL, TPOL) + CreateBitField (^IBUF, ^TIRQ._SHR, TSHR) + + If (LGreater (CONFIG_TPM_PIRQ, 0)) { + /* + * PIRQ: Update interrupt vector with configured PIRQ + */ + Store (CONFIG_TPM_PIRQ, TVEC) + + /* Active-Low Level-Triggered Shared */ + Store (One, TPOL) + Store (Zero, TTYP) + Store (One, TSHR) - /* Update interrupt type and polarity */ - CreateBitField (^IBUF, ^TIRQ._HE, TTYP) - CreateBitField (^IBUF, ^TIRQ._LL, TPOL) - CreateBitField (^IBUF, ^TIRQ._SHR, TSHR) + /* Merge IRQ with base address */ + Return (ConcatenateResTemplate (RBUF, IBUF)) + } ElseIf (LGreater (IVEC, 0)) { + /* + * SERIRQ: Update interrupt vector based on TPM register + */ + Store (IVEC, TVEC) If (LEqual (ITPL, 0x0)) { /* Active-High Level-Triggered Shared */ |