projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 5e124724 VB |
1 | /* |
| 2 | * Copyright (c) 2011 The Chromium OS Authors. | |
| 3 | * | |
| 4 | * See file CREDITS for list of people who contributed to this | |
| 5 | * project. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License as | |
| 9 | * published by the Free Software Foundation; either version 2 of | |
| 10 | * the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
| 20 | * MA 02111-1307 USA | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef _INCLUDE_TPM_H_ | |
| 24 | #define _INCLUDE_TPM_H_ | |
| 25 | ||
| 26 | #include <common.h> | |
| 27 | ||
| 28 | /* | |
| 29 | * tis_init() | |
| 30 | * | |
| 31 | * Initialize the TPM device. Returns 0 on success or -1 on | |
| 32 | * failure (in case device probing did not succeed). | |
| 33 | */ | |
| 34 | int tis_init(void); | |
| 35 | ||
| 36 | /* | |
| 37 | * tis_open() | |
| 38 | * | |
| 39 | * Requests access to locality 0 for the caller. After all commands have been | |
| 40 | * completed the caller is supposed to call tis_close(). | |
| 41 | * | |
| 42 | * Returns 0 on success, -1 on failure. | |
| 43 | */ | |
| 44 | int tis_open(void); | |
| 45 | ||
| 46 | /* | |
| 47 | * tis_close() | |
| 48 | * | |
| 49 | * terminate the currect session with the TPM by releasing the locked | |
| 50 | * locality. Returns 0 on success of -1 on failure (in case lock | |
| 51 | * removal did not succeed). | |
| 52 | */ | |
| 53 | int tis_close(void); | |
| 54 | ||
| 55 | /* | |
| 56 | * tis_sendrecv() | |
| 57 | * | |
| 58 | * Send the requested data to the TPM and then try to get its response | |
| 59 | * | |
| 60 | * @sendbuf - buffer of the data to send | |
| 61 | * @send_size size of the data to send | |
| 62 | * @recvbuf - memory to save the response to | |
| 63 | * @recv_len - pointer to the size of the response buffer | |
| 64 | * | |
| 65 | * Returns 0 on success (and places the number of response bytes at recv_len) | |
| 66 | * or -1 on failure. | |
| 67 | */ | |
| 68 | int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, uint8_t *recvbuf, | |
| 69 | size_t *recv_len); | |
| 70 | ||
| 71 | #endif /* _INCLUDE_TPM_H_ */ |