1 | /* |
2 | * TPM utility functions |
3 | * |
4 | * Copyright (c) 2010 - 2015 IBM Corporation |
5 | * Authors: |
6 | * Stefan Berger <stefanb@us.ibm.com> |
7 | * |
8 | * This library is free software; you can redistribute it and/or |
9 | * modify it under the terms of the GNU Lesser General Public |
10 | * License as published by the Free Software Foundation; either |
11 | * version 2 of the License, or (at your option) any later version. |
12 | * |
13 | * This library is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | * Lesser General Public License for more details. |
17 | * |
18 | * You should have received a copy of the GNU Lesser General Public |
19 | * License along with this library; if not, see <http://www.gnu.org/licenses/> |
20 | */ |
21 | |
22 | #ifndef TPM_TPM_UTIL_H |
23 | #define TPM_TPM_UTIL_H |
24 | |
25 | #include "sysemu/tpm.h" |
26 | #include "qemu/bswap.h" |
27 | |
28 | void tpm_util_write_fatal_error_response(uint8_t *out, uint32_t out_len); |
29 | |
30 | bool tpm_util_is_selftest(const uint8_t *in, uint32_t in_len); |
31 | |
32 | int tpm_util_test_tpmdev(int tpm_fd, TPMVersion *tpm_version); |
33 | |
34 | static inline uint16_t tpm_cmd_get_tag(const void *b) |
35 | { |
36 | return lduw_be_p(b); |
37 | } |
38 | |
39 | static inline void tpm_cmd_set_tag(void *b, uint16_t tag) |
40 | { |
41 | stw_be_p(b, tag); |
42 | } |
43 | |
44 | static inline uint32_t tpm_cmd_get_size(const void *b) |
45 | { |
46 | return ldl_be_p(b + 2); |
47 | } |
48 | |
49 | static inline void tpm_cmd_set_size(void *b, uint32_t size) |
50 | { |
51 | stl_be_p(b + 2, size); |
52 | } |
53 | |
54 | static inline uint32_t tpm_cmd_get_ordinal(const void *b) |
55 | { |
56 | return ldl_be_p(b + 6); |
57 | } |
58 | |
59 | static inline uint32_t tpm_cmd_get_errcode(const void *b) |
60 | { |
61 | return ldl_be_p(b + 6); |
62 | } |
63 | |
64 | static inline void tpm_cmd_set_error(void *b, uint32_t error) |
65 | { |
66 | stl_be_p(b + 6, error); |
67 | } |
68 | |
69 | int tpm_util_get_buffer_size(int tpm_fd, TPMVersion tpm_version, |
70 | size_t *buffersize); |
71 | |
72 | #define DEFINE_PROP_TPMBE(_n, _s, _f) \ |
73 | DEFINE_PROP(_n, _s, _f, qdev_prop_tpm, TPMBackend *) |
74 | |
75 | typedef struct TPMSizedBuffer { |
76 | uint32_t size; |
77 | uint8_t *buffer; |
78 | } TPMSizedBuffer; |
79 | |
80 | void tpm_sized_buffer_reset(TPMSizedBuffer *tsb); |
81 | |
82 | #endif /* TPM_TPM_UTIL_H */ |
83 | |