1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/* Copyright 2013-2018 IBM Corp. */
#ifndef __TPM_H
#define __TPM_H
#include <device.h>
#include <eventlib.h>
#include <tss2/eventlog.h>
#include <tss2/tssskiboot.h>
struct tpm_dev {
/* TPM bus id */
int bus_id;
/* TPM address in the bus */
int i2c_addr;
};
struct tpm_driver {
/* Driver name */
const char* name;
/* Transmit the TPM command stored in buf to the tpm device */
int (*transmit)(struct tpm_dev *dev, uint8_t* buf, size_t cmdlen,
size_t *buflen);
};
struct tpm_chip {
/* TPM chip id */
int id;
/* Indicates whether or not the device and log are functional */
bool enabled;
/* TPM device tree node */
struct dt_node *node;
/* Event log handler */
struct _TpmLogMgr logmgr;
/* TPM device handler */
struct tpm_dev *dev;
/* TPM driver handler */
struct tpm_driver *driver;
struct list_node link;
};
void tss_tpm_register(struct tpm_dev *dev, struct tpm_driver *driver);
void tss_tpm_unregister(void);
struct tpm_dev* tpm_get_device(void);
struct tpm_driver* tpm_get_driver(void);
/*
* Register a tpm chip by binding the driver to dev.
* Event log is also registered by this function.
*/
extern int tpm_register_chip(struct dt_node *node, struct tpm_dev *dev,
struct tpm_driver *driver);
/*
* tpm_extendl - For each TPM device, this extends the sha1 and sha 256 digests
* to the indicated PCR and also records an event for the same PCR
* in the event log
* This calls a TSS extend function that supports multibank. Both sha1 and
* sha256 digests are extended in a single operation sent to the TPM device.
*/
int tpm_extendl(TPMI_DH_PCR pcr,
TPMI_ALG_HASH alg1, uint8_t *digest1,
TPMI_ALG_HASH alg2, uint8_t *digest2,
uint32_t event_type, const char *event_msg,
uint32_t event_msg_len);
/* Add status property to the TPM devices */
extern void tpm_add_status_property(void);
extern int tpm_init(void);
extern void tpm_cleanup(void);
#endif /* __TPM_H */
|
