src/drivers/tpm/tpm.c

/*
 * Copyright 2013 Google Inc.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <libpayload.h>

#include "drivers/tpm/tpm.h"

static TpmOps *tpm_ops;

int tpm_set_ops(TpmOps *ops)
{
	if (tpm_ops) {
		printf("%s: TPM ops already set.\n", __func__);
		return -1;
	}
	tpm_ops = ops;
	return 0;
}

int tpm_xmit(const uint8_t *sendbuf, size_t send_size,
	     uint8_t *recvbuf, size_t *recv_len)
{
	if (!tpm_ops) {
		printf("%s: No TPM ops set.\n", __func__);
		return -1;
	}
	return tpm_ops->xmit(tpm_ops, sendbuf, send_size, recvbuf, recv_len);
}