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/*
* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef IMG_PARSER_MOD_H
#define IMG_PARSER_MOD_H
#include <auth_common.h>
/*
* Return values
*/
enum img_parser_ret_value {
IMG_PARSER_OK,
IMG_PARSER_ERR, /* Parser internal error */
IMG_PARSER_ERR_FORMAT, /* Malformed image */
IMG_PARSER_ERR_NOT_FOUND /* Authentication data not found */
};
/*
* Image types. A parser should be instantiated and registered for each type
*/
typedef enum img_type_enum {
IMG_RAW, /* Binary image */
IMG_PLAT, /* Platform specific format */
IMG_CERT, /* X509v3 certificate */
IMG_MAX_TYPES,
} img_type_t;
/* Image parser library structure */
typedef struct img_parser_lib_desc_s {
img_type_t img_type;
const char *name;
void (*init)(void);
int (*check_integrity)(void *img, unsigned int img_len);
int (*get_auth_param)(const auth_param_type_desc_t *type_desc,
void *img, unsigned int img_len,
void **param, unsigned int *param_len);
} img_parser_lib_desc_t;
/* Exported functions */
void img_parser_init(void);
int img_parser_check_integrity(img_type_t img_type,
void *img_ptr, unsigned int img_len);
int img_parser_get_auth_param(img_type_t img_type,
const auth_param_type_desc_t *type_desc,
void *img_ptr, unsigned int img_len,
void **param_ptr, unsigned int *param_len);
/* Macro to register an image parser library */
#define REGISTER_IMG_PARSER_LIB(_type, _name, _init, _check_int, _get_param) \
static const img_parser_lib_desc_t __img_parser_lib_desc_##_type \
__section(".img_parser_lib_descs") __used = { \
.img_type = _type, \
.name = _name, \
.init = _init, \
.check_integrity = _check_int, \
.get_auth_param = _get_param \
}
#endif /* IMG_PARSER_MOD_H */