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/*
* TPM configuration
*
* Copyright (C) 2011-2013 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.
*/
#ifndef TPM_TPM_INT_H
#define TPM_TPM_INT_H
#include "exec/memory.h"
#include "tpm/tpm_tis.h"
struct TPMDriverOps;
typedef struct TPMDriverOps TPMDriverOps;
typedef struct TPMPassthruState TPMPassthruState;
typedef struct TPMBackend {
char *id;
enum TpmModel fe_model;
char *path;
char *cancel_path;
const TPMDriverOps *ops;
union {
TPMPassthruState *tpm_pt;
} s;
QLIST_ENTRY(TPMBackend) list;
} TPMBackend;
/* overall state of the TPM interface */
typedef struct TPMState {
ISADevice busdev;
MemoryRegion mmio;
union {
TPMTISEmuState tis;
} s;
uint8_t locty_number;
TPMLocality *locty_data;
char *backend;
TPMBackend *be_driver;
} TPMState;
#define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS)
typedef void (TPMRecvDataCB)(TPMState *, uint8_t locty);
struct TPMDriverOps {
enum TpmType type;
/* get a descriptive text of the backend to display to the user */
const char *(*desc)(void);
TPMBackend *(*create)(QemuOpts *opts, const char *id);
void (*destroy)(TPMBackend *t);
/* initialize the backend */
int (*init)(TPMBackend *t, TPMState *s, TPMRecvDataCB *datacb);
/* start up the TPM on the backend */
int (*startup_tpm)(TPMBackend *t);
/* returns true if nothing will ever answer TPM requests */
bool (*had_startup_error)(TPMBackend *t);
size_t (*realloc_buffer)(TPMSizedBuffer *sb);
void (*deliver_request)(TPMBackend *t);
void (*reset)(TPMBackend *t);
void (*cancel_cmd)(TPMBackend *t);
bool (*get_tpm_established_flag)(TPMBackend *t);
};
struct tpm_req_hdr {
uint16_t tag;
uint32_t len;
uint32_t ordinal;
} QEMU_PACKED;
struct tpm_resp_hdr {
uint16_t tag;
uint32_t len;
uint32_t errcode;
} QEMU_PACKED;
#define TPM_TAG_RQU_COMMAND 0xc1
#define TPM_TAG_RQU_AUTH1_COMMAND 0xc2
#define TPM_TAG_RQU_AUTH2_COMMAND 0xc3
#define TPM_TAG_RSP_COMMAND 0xc4
#define TPM_TAG_RSP_AUTH1_COMMAND 0xc5
#define TPM_TAG_RSP_AUTH2_COMMAND 0xc6
#define TPM_FAIL 9
#define TPM_ORD_GetTicks 0xf1
TPMBackend *qemu_find_tpm(const char *id);
int tpm_register_model(enum TpmModel model);
int tpm_register_driver(const TPMDriverOps *tdo);
void tpm_display_backend_drivers(void);
const TPMDriverOps *tpm_get_backend_driver(const char *type);
void tpm_write_fatal_error_response(uint8_t *out, uint32_t out_len);
extern const TPMDriverOps tpm_passthrough_driver;
#endif /* TPM_TPM_INT_H */
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