76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2020, STMicroelectronics - All Rights Reserved
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <errno.h>
|
|
|
|
#include <platform_def.h>
|
|
|
|
#include <common/debug.h>
|
|
#include <drivers/auth/img_parser_mod.h>
|
|
#include <plat/common/platform.h>
|
|
|
|
static void img_lib_init(void)
|
|
{
|
|
}
|
|
|
|
static int img_check_integrity(void *img, unsigned int img_len)
|
|
{
|
|
return stm32mp_check_header(stm32mp_get_loaded_header(),
|
|
(uintptr_t)img);
|
|
}
|
|
|
|
static int img_get_auth_param(const auth_param_type_desc_t *type_desc,
|
|
void *img, unsigned int img_len, void **param,
|
|
unsigned int *param_len)
|
|
{
|
|
boot_api_image_header_t *image_header = stm32mp_get_loaded_header();
|
|
|
|
switch (type_desc->type) {
|
|
case AUTH_PARAM_SIG:
|
|
*param_len = sizeof(image_header->image_signature);
|
|
*param = &image_header->image_signature;
|
|
break;
|
|
case AUTH_PARAM_SIG_ALG:
|
|
*param_len = sizeof(image_header->option_flags) +
|
|
sizeof(image_header->ecc_algo_type);
|
|
*param = &image_header->option_flags;
|
|
/*
|
|
* Store option_flags and ecc_alog_type in same param
|
|
* structure because they both have the same header fields.
|
|
*/
|
|
break;
|
|
case AUTH_PARAM_PUB_KEY:
|
|
*param_len = sizeof(image_header->ecc_pubk);
|
|
*param = &image_header->ecc_pubk;
|
|
break;
|
|
case AUTH_PARAM_RAW_DATA:
|
|
if (type_desc->cookie == NULL) {
|
|
*param_len = image_header->image_length;
|
|
*param = img;
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case AUTH_PARAM_NV_CTR:
|
|
if (type_desc->cookie == NULL) {
|
|
*param_len = sizeof(image_header->image_version);
|
|
*param = &image_header->image_version;
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
REGISTER_IMG_PARSER_LIB(IMG_PLAT, "stm32_img_parser_lib",
|
|
img_lib_init,
|
|
img_check_integrity,
|
|
img_get_auth_param);
|