diff options
Diffstat (limited to 'include/tpm-common.h')
| -rw-r--r-- | include/tpm-common.h | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/include/tpm-common.h b/include/tpm-common.h index 5f8bc6bc528..3d88b44db7a 100644 --- a/include/tpm-common.h +++ b/include/tpm-common.h @@ -26,6 +26,8 @@ enum tpm_duration { /* Max buffer size supported by our tpm */ #define TPM_DEV_BUFSIZE 1260 +#define TPM_PCR_MINIMUM_DIGEST_SIZE 20 + /** * enum tpm_version - The version of the TPM stack to be used * @TPM_V1: Use TPM v1.x stack @@ -174,12 +176,40 @@ struct tpm_ops { int do_##cmd(cmd_tbl_t *cmdtp, int flag, \ int argc, char * const argv[]) \ { \ + struct udevice *dev; \ + int rc; \ + \ + rc = get_tpm(&dev); \ + if (rc) \ + return rc; \ if (argc != 1) \ return CMD_RET_USAGE; \ - return report_return_code(cmd()); \ + return report_return_code(cmd(dev)); \ } /** + * tpm_open() - Request access to locality 0 for the caller + * + * After all commands have been completed the caller is supposed to + * call tpm_close(). + * + * @dev - TPM device + * Returns 0 on success, -ve on failure. + */ +int tpm_open(struct udevice *dev); + +/** + * tpm_close() - Close the current session + * + * Releasing the locked locality. Returns 0 on success, -ve 1 on + * failure (in case lock removal did not succeed). + * + * @dev - TPM device + * Returns 0 on success, -ve on failure. + */ +int tpm_close(struct udevice *dev); + +/** * tpm_get_desc() - Get a text description of the TPM * * @dev: Device to check @@ -202,6 +232,7 @@ int tpm_get_desc(struct udevice *dev, char *buf, int size); * Note that the outgoing data is inspected to determine command type * (ordinal) and a timeout is used for that command type. * + * @dev - TPM device * @sendbuf - buffer of the data to send * @send_size size of the data to send * @recvbuf - memory to save the response to @@ -216,9 +247,10 @@ int tpm_xfer(struct udevice *dev, const u8 *sendbuf, size_t send_size, /** * Initialize TPM device. It must be called before any TPM commands. * + * @dev - TPM device * @return 0 on success, non-0 on error. */ -int tpm_init(void); +int tpm_init(struct udevice *dev); /** * Retrieve the array containing all the v1 (resp. v2) commands. |