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89 lines
3.2 KiB
89 lines
3.2 KiB
10 years ago
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/*
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* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __IMG_PARSER_MOD_H__
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#define __IMG_PARSER_MOD_H__
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#include <auth_common.h>
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/*
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* Return values
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*/
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enum img_parser_ret_value {
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IMG_PARSER_OK,
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IMG_PARSER_ERR, /* Parser internal error */
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IMG_PARSER_ERR_FORMAT, /* Malformed image */
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IMG_PARSER_ERR_NOT_FOUND /* Authentication data not found */
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};
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/*
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* Image types. A parser should be instantiated and registered for each type
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*/
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typedef enum img_type_enum {
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IMG_RAW, /* Binary image */
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IMG_PLAT, /* Platform specific format */
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IMG_CERT, /* X509v3 certificate */
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IMG_MAX_TYPES,
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} img_type_t;
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/* Image parser library structure */
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typedef struct img_parser_lib_desc_s {
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img_type_t img_type;
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const char *name;
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void (*init)(void);
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int (*check_integrity)(void *img, unsigned int img_len);
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int (*get_auth_param)(const auth_param_type_desc_t *type_desc,
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void *img, unsigned int img_len,
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void **param, unsigned int *param_len);
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} img_parser_lib_desc_t;
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/* Exported functions */
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void img_parser_init(void);
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int img_parser_check_integrity(img_type_t img_type,
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void *img, unsigned int img_len);
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int img_parser_get_auth_param(img_type_t img_type,
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const auth_param_type_desc_t *type_desc,
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void *img, unsigned int img_len,
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void **param_ptr, unsigned int *param_len);
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/* Macro to register an image parser library */
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#define REGISTER_IMG_PARSER_LIB(_type, _name, _init, _check_int, _get_param) \
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static const img_parser_lib_desc_t __img_parser_lib_desc_##_type \
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__attribute__ ((section(".img_parser_lib_descs"), used)) = { \
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.img_type = _type, \
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.name = _name, \
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.init = _init, \
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.check_integrity = _check_int, \
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.get_auth_param = _get_param \
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}
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#endif /* __IMG_PARSER_MOD_H__ */
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