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/* Copyright 2013-2016 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __TPM_H
#define __TPM_H
#include <device.h>
struct tpm_dev {
/* TPM bus id */
int bus_id;
/* TPM address in the bus */
int xscom_base;
};
struct tpm_driver {
/* Driver name */
const char* name;
/* Transmit the TPM command stored in buf to the tpm device */
int (*transmit)(struct tpm_dev *dev, uint8_t* buf, size_t cmdlen,
size_t *buflen);
};
struct tpm_chip {
/* TPM chip id */
int id;
/* Indicates whether or not the device and log are functional */
bool enabled;
/* TPM device tree node */
struct dt_node *node;
/* TPM device handler */
struct tpm_dev *dev;
/* TPM driver handler */
struct tpm_driver *driver;
struct list_node link;
};
/*
* Register a tpm chip by binding the driver to dev.
*/
extern int tpm_register_chip(struct dt_node *node, struct tpm_dev *dev,
struct tpm_driver *driver);
/* Add status property to the TPM devices */
extern void tpm_add_status_property(void);
extern void tpm_init(void);
extern void tpm_cleanup(void);
#endif /* __TPM_H */
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