| 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 2.1 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 SYSTEM_TPM_UTIL_H |
| 23 | #define SYSTEM_TPM_UTIL_H |
| 24 | |
| 25 | #include "system/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 | void tpm_util_show_buffer(const unsigned char *buffer, |
| 70 | size_t buffer_size, const char *string); |
| 71 | |
| 72 | #endif /* SYSTEM_TPM_UTIL_H */ |