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Following the recent upgrade to version 1.3, extend the TPM TIS interface with capabilities introduced for support of a TPM 2. TPM TIS for TPM 2 introduced the following extensions beyond the TPM TIS 1.3 (used for TPM 1.2): - A new 32bit interface Id register was introduced. - New flags for the status (STS) register were defined. - New flags for the capability flags were defined. Support the above if a TPM TIS 1.3 for TPM 2 is used with a TPM 2 on the backend side. Support the old TPM TIS 1.3 configuration if a TPM 1.2 is being used. A subsequent patch will then determine which TPM version is being used in the backend. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/*
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* tpm_tis.h - QEMU's TPM TIS interface emulator
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*
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* Copyright (C) 2006, 2010-2013 IBM Corporation
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*
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* Authors:
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* Stefan Berger <stefanb@us.ibm.com>
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* David Safford <safford@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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* Implementation of the TIS interface according to specs found at
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* http://www.trustedcomputinggroup.org
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*
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*/
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#ifndef TPM_TPM_TIS_H
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#define TPM_TPM_TIS_H
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#include "hw/isa/isa.h"
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#include "hw/acpi/tpm.h"
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#include "qemu-common.h"
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#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
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#define TPM_TIS_LOCALITY_SHIFT 12
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#define TPM_TIS_NO_LOCALITY 0xff
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#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
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#define TPM_TIS_BUFFER_MAX 4096
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typedef enum {
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TPM_TIS_STATE_IDLE = 0,
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TPM_TIS_STATE_READY,
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TPM_TIS_STATE_COMPLETION,
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TPM_TIS_STATE_EXECUTION,
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TPM_TIS_STATE_RECEPTION,
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} TPMTISState;
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/* locality data -- all fields are persisted */
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typedef struct TPMLocality {
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TPMTISState state;
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uint8_t access;
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uint32_t sts;
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uint32_t iface_id;
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uint32_t inte;
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uint32_t ints;
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uint16_t w_offset;
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uint16_t r_offset;
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TPMSizedBuffer w_buffer;
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TPMSizedBuffer r_buffer;
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} TPMLocality;
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typedef struct TPMTISEmuState {
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QEMUBH *bh;
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uint32_t offset;
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uint8_t buf[TPM_TIS_BUFFER_MAX];
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uint8_t active_locty;
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uint8_t aborting_locty;
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uint8_t next_locty;
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TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
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qemu_irq irq;
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uint32_t irq_num;
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} TPMTISEmuState;
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#endif /* TPM_TPM_TIS_H */
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