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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/* Copyright 2019 IBM Corp. */
#ifndef _SECVAR_DRIVER_
#define _SECVAR_DRIVER_
#include <stdint.h>
struct secvar;
struct secvar_storage_driver {
int (*load_bank)(struct list_head *bank, int section);
int (*write_bank)(struct list_head *bank, int section);
int (*store_init)(void);
void (*lockdown)(void);
uint64_t max_var_size;
};
struct secvar_backend_driver {
/* Perform any pre-processing stuff (e.g. determine secure boot state) */
int (*pre_process)(struct list_head *variable_bank,
struct list_head *update_bank);
/* Process all updates */
int (*process)(struct list_head *variable_bank,
struct list_head *update_bank);
/* Perform any post-processing stuff (e.g. derive/update variables)*/
int (*post_process)(struct list_head *variable_bank,
struct list_head *update_bank);
/* Validate a single variable, return boolean */
int (*validate)(struct secvar *var);
/* String to use for compatible in secvar node */
const char *compatible;
};
extern struct secvar_storage_driver secboot_tpm_driver;
extern struct secvar_backend_driver edk2_compatible_v1;
int secvar_main(struct secvar_storage_driver, struct secvar_backend_driver);
#endif
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