Daisuke Nojiri | efb5cde | 2014-07-02 08:37:23 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| 2 | * Use of this source code is governed by a BSD-style license that can be |
| 3 | * found in the LICENSE file. |
| 4 | */ |
| 5 | |
| 6 | #ifndef TPM_LITE_TLCL_INTERNAL_H_ |
| 7 | #define TPM_LITE_TLCL_INTERNAL_H_ |
| 8 | |
| 9 | /* |
| 10 | * These numbers derive from adding the sizes of command fields as shown in the |
| 11 | * TPM commands manual. |
| 12 | */ |
| 13 | #define kTpmRequestHeaderLength 10 |
| 14 | #define kTpmResponseHeaderLength 10 |
| 15 | #define kTpmReadInfoLength 12 |
| 16 | #define kEncAuthLength 20 |
| 17 | #define kPcrDigestLength 20 |
| 18 | |
| 19 | |
| 20 | /* |
Daisuke Nojiri | 5799097 | 2014-07-15 19:47:32 -0700 | [diff] [blame] | 21 | * Conversion functions. to_tpm_TYPE puts a value of type TYPE into a TPM |
| 22 | * command buffer. from_tpm_TYPE gets a value of type TYPE from a TPM command |
Daisuke Nojiri | efb5cde | 2014-07-02 08:37:23 -0700 | [diff] [blame] | 23 | * buffer into a variable. |
| 24 | */ |
| 25 | __attribute__((unused)) |
Lee Leahy | 342f8d6 | 2017-03-10 15:31:56 -0800 | [diff] [blame] | 26 | static inline void to_tpm_uint32(uint8_t *buffer, uint32_t x) |
| 27 | { |
Daisuke Nojiri | 5799097 | 2014-07-15 19:47:32 -0700 | [diff] [blame] | 28 | buffer[0] = (uint8_t)(x >> 24); |
| 29 | buffer[1] = (uint8_t)((x >> 16) & 0xff); |
| 30 | buffer[2] = (uint8_t)((x >> 8) & 0xff); |
| 31 | buffer[3] = (uint8_t)(x & 0xff); |
Daisuke Nojiri | efb5cde | 2014-07-02 08:37:23 -0700 | [diff] [blame] | 32 | } |
| 33 | |
| 34 | /* |
| 35 | * See comment for above function. |
| 36 | */ |
| 37 | __attribute__((unused)) |
Lee Leahy | 342f8d6 | 2017-03-10 15:31:56 -0800 | [diff] [blame] | 38 | static inline void from_tpm_uint32(const uint8_t *buffer, uint32_t *x) |
| 39 | { |
Daisuke Nojiri | 5799097 | 2014-07-15 19:47:32 -0700 | [diff] [blame] | 40 | *x = ((buffer[0] << 24) | |
| 41 | (buffer[1] << 16) | |
| 42 | (buffer[2] << 8) | |
| 43 | buffer[3]); |
Daisuke Nojiri | efb5cde | 2014-07-02 08:37:23 -0700 | [diff] [blame] | 44 | } |
| 45 | |
| 46 | /* |
| 47 | * See comment for above function. |
| 48 | */ |
| 49 | __attribute__((unused)) |
Lee Leahy | 342f8d6 | 2017-03-10 15:31:56 -0800 | [diff] [blame] | 50 | static inline void to_tpm_uint16(uint8_t *buffer, uint16_t x) |
| 51 | { |
Daisuke Nojiri | 5799097 | 2014-07-15 19:47:32 -0700 | [diff] [blame] | 52 | buffer[0] = (uint8_t)(x >> 8); |
| 53 | buffer[1] = (uint8_t)(x & 0xff); |
Daisuke Nojiri | efb5cde | 2014-07-02 08:37:23 -0700 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | /* |
| 57 | * See comment for above function. |
| 58 | */ |
| 59 | __attribute__((unused)) |
Lee Leahy | 342f8d6 | 2017-03-10 15:31:56 -0800 | [diff] [blame] | 60 | static inline void from_tpm_uint16(const uint8_t *buffer, uint16_t *x) |
| 61 | { |
Daisuke Nojiri | 5799097 | 2014-07-15 19:47:32 -0700 | [diff] [blame] | 62 | *x = (buffer[0] << 8) | buffer[1]; |
Daisuke Nojiri | efb5cde | 2014-07-02 08:37:23 -0700 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | #endif /* TPM_LITE_TLCL_INTERNAL_H_ */ |