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qemu/include/hw/acpi/tpm.h
Stefan Berger ac6dd31e3f acpi: build TPM Physical Presence interface 
The TPM Physical Presence interface consists of an ACPI part, a shared
memory part, and code in the firmware. Users can send messages to the
firmware by writing a code into the shared memory through invoking the
ACPI code. When a reboot happens, the firmware looks for the code and
acts on it by sending sequences of commands to the TPM.

This patch adds the ACPI code. It is similar to the one in EDK2 but doesn't
assume that SMIs are necessary to use. It uses a similar datastructure for
the shared memory as EDK2 does so that EDK2 and SeaBIOS could both make use
of it. I extended the shared memory data structure with an array of 256
bytes, one for each code that could be implemented. The array contains
flags describing the individual codes. This decouples the ACPI implementation
from the firmware implementation.

The underlying TCG specification is accessible from the following page.

https://trustedcomputinggroup.org/tcg-physical-presence-interface-specification/

This patch implements version 1.30.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
[ Marc-André - ACPI code improvements and windows fixes ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-01-17 21:10:57 -05:00

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/*
* tpm.h - TPM ACPI definitions
*
* Copyright (C) 2014 IBM Corporation
*
* Authors:
* Stefan Berger <stefanb@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
* Implementation of the TIS interface according to specs found at
* http://www.trustedcomputinggroup.org
*
*/
#ifndef HW_ACPI_TPM_H
#define HW_ACPI_TPM_H
#include "qemu/units.h"
#include "hw/registerfields.h"
#include "hw/acpi/aml-build.h"
#include "sysemu/tpm.h"
#define TPM_TIS_ADDR_BASE 0xFED40000
#define TPM_TIS_ADDR_SIZE 0x5000
#define TPM_TIS_IRQ 5
#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
#define TPM_TIS_LOCALITY_SHIFT 12
/* tis registers */
#define TPM_TIS_REG_ACCESS 0x00
#define TPM_TIS_REG_INT_ENABLE 0x08
#define TPM_TIS_REG_INT_VECTOR 0x0c
#define TPM_TIS_REG_INT_STATUS 0x10
#define TPM_TIS_REG_INTF_CAPABILITY 0x14
#define TPM_TIS_REG_STS 0x18
#define TPM_TIS_REG_DATA_FIFO 0x24
#define TPM_TIS_REG_INTERFACE_ID 0x30
#define TPM_TIS_REG_DATA_XFIFO 0x80
#define TPM_TIS_REG_DATA_XFIFO_END 0xbc
#define TPM_TIS_REG_DID_VID 0xf00
#define TPM_TIS_REG_RID 0xf04
/* vendor-specific registers */
#define TPM_TIS_REG_DEBUG 0xf90
#define TPM_TIS_STS_TPM_FAMILY_MASK (0x3 << 26)/* TPM 2.0 */
#define TPM_TIS_STS_TPM_FAMILY1_2 (0 << 26) /* TPM 2.0 */
#define TPM_TIS_STS_TPM_FAMILY2_0 (1 << 26) /* TPM 2.0 */
#define TPM_TIS_STS_RESET_ESTABLISHMENT_BIT (1 << 25) /* TPM 2.0 */
#define TPM_TIS_STS_COMMAND_CANCEL (1 << 24) /* TPM 2.0 */
#define TPM_TIS_STS_VALID (1 << 7)
#define TPM_TIS_STS_COMMAND_READY (1 << 6)
#define TPM_TIS_STS_TPM_GO (1 << 5)
#define TPM_TIS_STS_DATA_AVAILABLE (1 << 4)
#define TPM_TIS_STS_EXPECT (1 << 3)
#define TPM_TIS_STS_SELFTEST_DONE (1 << 2)
#define TPM_TIS_STS_RESPONSE_RETRY (1 << 1)
#define TPM_TIS_BURST_COUNT_SHIFT 8
#define TPM_TIS_BURST_COUNT(X) \
((X) << TPM_TIS_BURST_COUNT_SHIFT)
#define TPM_TIS_ACCESS_TPM_REG_VALID_STS (1 << 7)
#define TPM_TIS_ACCESS_ACTIVE_LOCALITY (1 << 5)
#define TPM_TIS_ACCESS_BEEN_SEIZED (1 << 4)
#define TPM_TIS_ACCESS_SEIZE (1 << 3)
#define TPM_TIS_ACCESS_PENDING_REQUEST (1 << 2)
#define TPM_TIS_ACCESS_REQUEST_USE (1 << 1)
#define TPM_TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0)
#define TPM_TIS_INT_ENABLED (1 << 31)
#define TPM_TIS_INT_DATA_AVAILABLE (1 << 0)
#define TPM_TIS_INT_STS_VALID (1 << 1)
#define TPM_TIS_INT_LOCALITY_CHANGED (1 << 2)
#define TPM_TIS_INT_COMMAND_READY (1 << 7)
#define TPM_TIS_INT_POLARITY_MASK (3 << 3)
#define TPM_TIS_INT_POLARITY_LOW_LEVEL (1 << 3)
#define TPM_TIS_INTERRUPTS_SUPPORTED (TPM_TIS_INT_LOCALITY_CHANGED | \
TPM_TIS_INT_DATA_AVAILABLE | \
TPM_TIS_INT_STS_VALID | \
TPM_TIS_INT_COMMAND_READY)
#define TPM_TIS_CAP_INTERFACE_VERSION1_3 (2 << 28)
#define TPM_TIS_CAP_INTERFACE_VERSION1_3_FOR_TPM2_0 (3 << 28)
#define TPM_TIS_CAP_DATA_TRANSFER_64B (3 << 9)
#define TPM_TIS_CAP_DATA_TRANSFER_LEGACY (0 << 9)
#define TPM_TIS_CAP_BURST_COUNT_DYNAMIC (0 << 8)
#define TPM_TIS_CAP_INTERRUPT_LOW_LEVEL (1 << 4) /* support is mandatory */
#define TPM_TIS_CAPABILITIES_SUPPORTED1_3 \
(TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \
TPM_TIS_CAP_BURST_COUNT_DYNAMIC | \
TPM_TIS_CAP_DATA_TRANSFER_64B | \
TPM_TIS_CAP_INTERFACE_VERSION1_3 | \
TPM_TIS_INTERRUPTS_SUPPORTED)
#define TPM_TIS_CAPABILITIES_SUPPORTED2_0 \
(TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \
TPM_TIS_CAP_BURST_COUNT_DYNAMIC | \
TPM_TIS_CAP_DATA_TRANSFER_64B | \
TPM_TIS_CAP_INTERFACE_VERSION1_3_FOR_TPM2_0 | \
TPM_TIS_INTERRUPTS_SUPPORTED)
#define TPM_TIS_IFACE_ID_INTERFACE_TIS1_3 (0xf) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INTERFACE_FIFO (0x0) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INTERFACE_VER_FIFO (0 << 4) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_CAP_5_LOCALITIES (1 << 8) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_CAP_TIS_SUPPORTED (1 << 13) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INT_SEL_LOCK (1 << 19) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3 \
(TPM_TIS_IFACE_ID_INTERFACE_TIS1_3 | \
(~0u << 4)/* all of it is don't care */)
/* if backend was a TPM 2.0: */
#define TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0 \
(TPM_TIS_IFACE_ID_INTERFACE_FIFO | \
TPM_TIS_IFACE_ID_INTERFACE_VER_FIFO | \
TPM_TIS_IFACE_ID_CAP_5_LOCALITIES | \
TPM_TIS_IFACE_ID_CAP_TIS_SUPPORTED)
#define TPM_TIS_TPM_DID 0x0001
#define TPM_TIS_TPM_VID PCI_VENDOR_ID_IBM
#define TPM_TIS_TPM_RID 0x0001
#define TPM_TIS_NO_DATA_BYTE 0xff
REG32(CRB_LOC_STATE, 0x00)
FIELD(CRB_LOC_STATE, tpmEstablished, 0, 1)
FIELD(CRB_LOC_STATE, locAssigned, 1, 1)
FIELD(CRB_LOC_STATE, activeLocality, 2, 3)
FIELD(CRB_LOC_STATE, reserved, 5, 2)
FIELD(CRB_LOC_STATE, tpmRegValidSts, 7, 1)
REG32(CRB_LOC_CTRL, 0x08)
REG32(CRB_LOC_STS, 0x0C)
FIELD(CRB_LOC_STS, Granted, 0, 1)
FIELD(CRB_LOC_STS, beenSeized, 1, 1)
REG32(CRB_INTF_ID, 0x30)
FIELD(CRB_INTF_ID, InterfaceType, 0, 4)
FIELD(CRB_INTF_ID, InterfaceVersion, 4, 4)
FIELD(CRB_INTF_ID, CapLocality, 8, 1)
FIELD(CRB_INTF_ID, CapCRBIdleBypass, 9, 1)
FIELD(CRB_INTF_ID, Reserved1, 10, 1)
FIELD(CRB_INTF_ID, CapDataXferSizeSupport, 11, 2)
FIELD(CRB_INTF_ID, CapFIFO, 13, 1)
FIELD(CRB_INTF_ID, CapCRB, 14, 1)
FIELD(CRB_INTF_ID, CapIFRes, 15, 2)
FIELD(CRB_INTF_ID, InterfaceSelector, 17, 2)
FIELD(CRB_INTF_ID, IntfSelLock, 19, 1)
FIELD(CRB_INTF_ID, Reserved2, 20, 4)
FIELD(CRB_INTF_ID, RID, 24, 8)
REG32(CRB_INTF_ID2, 0x34)
FIELD(CRB_INTF_ID2, VID, 0, 16)
FIELD(CRB_INTF_ID2, DID, 16, 16)
REG32(CRB_CTRL_EXT, 0x38)
REG32(CRB_CTRL_REQ, 0x40)
REG32(CRB_CTRL_STS, 0x44)
FIELD(CRB_CTRL_STS, tpmSts, 0, 1)
FIELD(CRB_CTRL_STS, tpmIdle, 1, 1)
REG32(CRB_CTRL_CANCEL, 0x48)
REG32(CRB_CTRL_START, 0x4C)
REG32(CRB_INT_ENABLED, 0x50)
REG32(CRB_INT_STS, 0x54)
REG32(CRB_CTRL_CMD_SIZE, 0x58)
REG32(CRB_CTRL_CMD_LADDR, 0x5C)
REG32(CRB_CTRL_CMD_HADDR, 0x60)
REG32(CRB_CTRL_RSP_SIZE, 0x64)
REG32(CRB_CTRL_RSP_ADDR, 0x68)
REG32(CRB_DATA_BUFFER, 0x80)
#define TPM_CRB_ADDR_BASE 0xFED40000
#define TPM_CRB_ADDR_SIZE 0x1000
#define TPM_CRB_ADDR_CTRL (TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ)
#define TPM_CRB_R_MAX R_CRB_DATA_BUFFER
#define TPM_LOG_AREA_MINIMUM_SIZE (64 * KiB)
#define TPM_TCPA_ACPI_CLASS_CLIENT 0
#define TPM_TCPA_ACPI_CLASS_SERVER 1
#define TPM2_ACPI_CLASS_CLIENT 0
#define TPM2_ACPI_CLASS_SERVER 1
#define TPM2_START_METHOD_MMIO 6
#define TPM2_START_METHOD_CRB 7
/*
* Physical Presence Interface
*/
#define TPM_PPI_ADDR_SIZE 0x400
#define TPM_PPI_ADDR_BASE 0xFED45000
#define TPM_PPI_VERSION_NONE 0
#define TPM_PPI_VERSION_1_30 1
/* whether function is blocked by BIOS settings; bits 0, 1, 2 */
#define TPM_PPI_FUNC_NOT_IMPLEMENTED (0 << 0)
#define TPM_PPI_FUNC_BIOS_ONLY (1 << 0)
#define TPM_PPI_FUNC_BLOCKED (2 << 0)
#define TPM_PPI_FUNC_ALLOWED_USR_REQ (3 << 0)
#define TPM_PPI_FUNC_ALLOWED_USR_NOT_REQ (4 << 0)
#define TPM_PPI_FUNC_MASK (7 << 0)
void tpm_build_ppi_acpi(TPMIf *tpm, Aml *dev);
#endif /* HW_ACPI_TPM_H */
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